PISTON COMPRESSOR AND PORTABLE REFRIGERATOR COMPRISING SAME
A piston compressor and a portable refrigerator. The portable refrigerator comprises a piston compressor, the piston compressor comprising a cylinder head, a cylinder head gasket, a valve plate, an intake valve, a valve gasket and a crankcase, wherein the cylinder head comprises a cylinder head high-pressure chamber and a cylinder head discharge hole, the crankcase comprises a crankcase high-pressure chamber and a crankcase discharge hole corresponding to the cylinder head discharge hole, and the piston compressor is provided with a plurality of gas discharge paths for discharging gas that enters the cylinder head high-pressure chamber, the plurality of gas discharge paths comprising: a gas discharge path, along which the gas leaves the cylinder head high-pressure chamber, passes through a gas guide hole in the cylinder head gasket, a gas guide hole in the valve plate, a gas guide hole in the intake valve and a gas guide hole in the valve gasket in sequence to a crankcase channel to enter the crankcase high-pressure chamber, then enters the crankcase discharge hole through a crankcase discharge channel, and is discharged through the cylinder head discharge hole; and at least one further gas discharge path, along which the gas leaves the cylinder head high-pressure chamber and returns to be discharged through the cylinder head discharge hole.
Any and all applications for which a foreign or domestic priority claim is identified in the Application Data Sheet as filed with the present application are hereby incorporated by reference herein and made a part of the present disclosure.
TECHNICAL FIELDPresent embodiments relate to a piston compressor, and more particularly to a piston compressor having a plurality of gas discharge paths. In addition, the present embodiments further relate to a portable refrigerator including the piston compressor.
BACKGROUNDFor piston compressors, the generation of vibration and noise during operation, especially in environments with high requirement for noise, has always been a problem to be committed to solving in the industry. However, during a discharge process, due to the impact of high-pressure gas, the piston compressors inevitably generate quite violent vibration and large noise.
For a piston compressor with a relatively large size and volume, a discharge muffler with a large volume is usually used to buffer vibration and reduce noise. However, for a small/micro piston compressor, for example, a piston compressor for use in a portable refrigerator, such as a vehicle-mounted refrigerator, due to the limitation of the size of the piston compressor on the volume of the discharge muffler and due to the fact that the gas is always discharged along one path during the discharge process, such a piston compressor may still generate considerable impact vibration and large noise during operation.
SUMMARYThe present embodiments aim to solve the technical problems mentioned above in the related art at least to a certain extent. To this end, a piston compressor is provided. The piston compressor includes a cylinder head, a cylinder head gasket, a valve plate, an intake valve, a valve gasket and a crankcase, the cylinder head including a cylinder head high-pressure chamber and a cylinder head discharge hole, and the crankcase including a crankcase channel, a crankcase high-pressure chamber, a crankcase discharge channel, and a crankcase discharge hole that corresponds to the cylinder head discharge hole, characterized in that the piston compressor is provided with a plurality of gas discharge paths for discharging gas that enters the cylinder head high-pressure chamber, the plurality of gas discharge paths including:
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- a gas discharge path, along which the gas leaves the cylinder head high-pressure chamber, passes through a gas guide hole in the cylinder head gasket, a gas guide hole in the valve plate, a gas guide hole in the intake valve and a gas guide hole in the valve gasket in sequence to the crankcase channel to enter the crankcase high-pressure chamber, then enters the crankcase discharge hole through the crankcase discharge channel, and is discharged through the cylinder head discharge hole; and at least one further gas discharge path, along which the gas leaves the cylinder head high-pressure chamber and returns to be discharged through the cylinder head discharge hole.
The piston compressor according to the present embodiments provide an improved discharge structure having a plurality of gas discharge paths along which the gas leaves the cylinder head high-pressure chamber and returns to be discharged through the cylinder head discharge hole. In the discharge structure mentioned above, the difference of travel between the plurality of gas discharge paths forms a counteracting effect, which significantly reduces gas pulsation, so as to reduce vibration and noise of the piston compressor during operation.
According to an aspect of the present embodiments, the crankcase channel is a recess in communication with the crankcase high-pressure chamber; and the crankcase discharge channel is a recess having one end in communication with the crankcase high-pressure chamber and the other end in communication with the crankcase discharge hole.
According to an aspect of the present embodiments, the at least one further gas discharge path includes a gas discharge path, along which the gas leaves the cylinder head high-pressure chamber, passes through an additional gas guide hole in the cylinder head gasket, an additional gas guide hole in the valve plate, an additional gas guide hole in the intake valve and an additional gas guide hole in the valve gasket in sequence to an additional crankcase channel to enter the crankcase high-pressure chamber, then enters the crankcase discharge hole through the crankcase discharge channel, and is discharged through the cylinder head discharge hole.
According to an aspect of the present embodiments, the at least one further gas discharge path includes a gas discharge path, along which the gas leaves the cylinder head high-pressure chamber, passes through an additional gas guide hole in the cylinder head gasket, an additional gas guide hole in the valve plate, an additional gas guide hole in the intake valve and an additional gas guide hole in the valve gasket in sequence to an additional crankcase discharge channel to enter the crankcase discharge hole, and is then discharged through a cylinder head discharge hole.
According to an aspect of the present embodiments, the at least one further gas discharge path includes: a gas discharge path, along which the gas leaves the cylinder head high-pressure chamber, passes through an additional gas guide hole in the cylinder head gasket, an additional gas guide hole in the valve plate, an additional gas guide hole in the intake valve and an additional gas guide hole in the valve gasket in sequence to an additional crankcase channel to enter the crankcase high-pressure chamber, then enters the crankcase discharge hole through the crankcase discharge channel, and is discharged through the cylinder head discharge hole; and a gas discharge path, along which the gas leaves the cylinder head high-pressure chamber, passes through a further additional gas guide hole in the cylinder head gasket, a further additional gas guide hole in the valve plate, a further additional gas guide hole in the intake valve and a further additional gas guide hole in the valve gasket in sequence to an additional crankcase discharge channel to enter the crankcase discharge hole, and is then discharged through the cylinder head discharge hole.
According to an aspect of the present embodiments, the additional crankcase channel is a recess in communication with the crankcase high-pressure chamber; and the additional crankcase discharge channel is a recess in communication with the crankcase discharge hole.
According to an aspect of the present embodiments, the at least one further gas discharge path includes two gas discharge paths, along one of which the gas leaving the cylinder head high-pressure chamber and passing through an additional gas guide hole in the cylinder head gasket, an additional gas guide hole in the valve plate, an additional gas guide hole in the intake valve and an additional gas guide hole in the valve gasket in sequence to the crankcase gas guide channel enters the crankcase high-pressure chamber, then enters the crankcase discharge hole through the crankcase discharge channel, and is discharged through the cylinder head discharge hole; and along the other of which the gas enters the crankcase discharge hole and is discharged through the cylinder head discharge hole.
According to an aspect of the present embodiments, the crankcase gas guide channel is in the form of an L-shaped recess, and includes a first guiding portion for guiding the gas to the crankcase high-pressure chamber and a second guiding portion for guiding the gas to the crankcase discharge hole.
According to an aspect of the present embodiments, the at least one further gas discharge path includes a gas discharge path, along which the gas leaves the cylinder head high-pressure chamber, passes through an additional gas guide hole in the cylinder head gasket to a valve plate discharge channel in the valve plate, then enters a valve plate discharge hole, and is discharged through the cylinder head discharge hole.
According to an aspect of the present embodiments, the valve plate discharge channel is a through-going slit or a recess in communication with the valve plate discharge hole.
According to another aspect of the present embodiments, a portable refrigerator is further provided. The portable refrigerator includes a piston compressor according to the above aspects, and the portable refrigerator may be a vehicle-mounted refrigerator, for example.
The present embodiments will be further described below with reference to the accompanying drawings and examples. In the accompanying drawings:
The embodiments of the present disclosure will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference signs refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be illustrative of the disclosure, but should not be construed as limiting the disclosure.
First,
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In addition, as shown in
As can also be seen from
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In addition, as shown in
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Referring to
Various embodiments of multiple paths in the discharge structure for discharge of gas in the piston compressor when in the operating state according to the present embodiments will be described in detail below.
In a first embodiment in which two gas discharge paths are provided as shown in
In a second embodiment in which two gas discharge paths are provided as shown in
Additionally or alternatively, in a third embodiment in which two gas discharge paths are provided as shown in
Alternatively, the piston compressor according to the present embodiments may also have a discharge structure with three gas discharge paths. For example, in the first embodiment in which three gas discharge paths are provided as shown in
Additionally or alternatively, in a second embodiment in which three gas discharge paths are provided as shown in
It should be understood that the piston compressor having a plurality of gas discharge paths according to the present embodiments is highly advantageous for refrigeration equipment with limited size and space, because the piston compressor according to the present embodiments is not affected by an increase in size and space caused by the need to use a discharge muffler of a larger volume. Moreover, according to another aspect of the present embodiments, a portable refrigerator, such as a vehicle-mounted refrigerator, is provided. The portable refrigerator includes a piston compressor according to any of the above embodiments. Because of the above advantages of the piston compressor, the vehicle-mounted refrigerator including the piston compressor has significantly reduced vibration and noise during operation. In the description of the present disclosure, it should be understood that the orientations or the position relationship indicated by the terms such as “upper”, “lower”, “inner”, “outer” and “side” are based on the orientations or the position relationship shown in the accompanying drawings, which is only for ease of description of the present disclosure and for simplifying the description, rather than indicating or implying that the devices or elements referred to necessarily have a specific orientation structure and operation, and therefore cannot be construed as limiting the present disclosure.
Furthermore, the terms “first”, “second” and “third” are merely used for the description purpose, and should not be construed as indicating or implying relative importance. Therefore, the features defined with “first”, “second”, and “third” can explicitly or implicitly include one or more of the features.
Although the embodiments have been shown and described above, it should be understood that the above-mentioned embodiments are merely exemplary and should not be construed as limiting, and those of ordinary skill in the art may perform changes, modifications, replacements and variations to the embodiments described above within the scope of the present disclosure.
Claims
1. A piston compressor, comprising a cylinder head, a cylinder head gasket, a valve plate, an intake valve, a valve gasket and a crankcase, the cylinder head comprising a cylinder head high-pressure chamber and a cylinder head discharge hole, and the crankcase comprising a crankcase channel, a crankcase high-pressure chamber, a crankcase discharge channel, and a crankcase discharge hole that corresponds to the cylinder head discharge hole, characterized in that the piston compressor is provided with a plurality of gas discharge paths for discharging gas that enters the cylinder head high-pressure chamber, the plurality of gas discharge paths comprising:
- a gas discharge path, along which the gas leaves the cylinder head high-pressure chamber, passes through a gas guide hole in the cylinder head gasket, a gas guide hole in the valve plate, a gas guide hole in the intake valve and a gas guide hole in the valve gasket in sequence to the crankcase channel to enter the crankcase high-pressure chamber, then enters the crankcase discharge hole through the crankcase discharge channel, and is discharged through the cylinder head discharge hole; and at least one further gas discharge path, along which the gas leaves the cylinder head high-pressure chamber and returns to be discharged through the cylinder head discharge hole.
2. The piston compressor of claim 1, characterized in that the crankcase channel is a recess in communication with the crankcase high-pressure chamber; and the crankcase discharge channel is a recess having one end in communication with the crankcase high-pressure chamber and the other end in communication with the crankcase discharge hole.
3. The piston compressor of claim 1, characterized in that the at least one further gas discharge path comprises a gas discharge path, along which the gas leaves the cylinder head high-pressure chamber, passes through an additional gas guide hole in the cylinder head gasket, an additional gas guide hole in the valve plate, an additional gas guide hole in the intake valve and an additional gas guide hole in the valve gasket in sequence to an additional crankcase channel to enter the crankcase high-pressure chamber, then enters the crankcase discharge hole through the crankcase discharge channel, and is discharged through the cylinder head discharge hole.
4. The piston compressor of claim 1, characterized in that the at least one further gas discharge path comprises a gas discharge path, along which the gas leaves the cylinder head high-pressure chamber, passes through an additional gas guide hole in the cylinder head gasket, an additional gas guide hole in the valve plate, an additional gas guide hole in the intake valve and an additional gas guide hole in the valve gasket in sequence to an additional crankcase discharge channel to enter the crankcase discharge hole, and is then discharged through a cylinder head discharge hole.
5. The piston compressor of claim 1, characterized in that the at least one further gas discharge path comprises: a gas discharge path, along which the gas leaves the cylinder head high-pressure chamber, passes through an additional gas guide hole in the cylinder head gasket, an additional gas guide hole in the valve plate, an additional gas guide hole in the intake valve and an additional gas guide hole in the valve gasket in sequence to an additional crankcase channel to enter the crankcase high-pressure chamber, then enters the crankcase discharge hole through the crankcase discharge channel, and is discharged through the cylinder head discharge hole; and a gas discharge path, along which the gas leaves the cylinder head high-pressure chamber, passes through a further additional gas guide hole in the cylinder head gasket, a further additional gas guide hole in the valve plate, a further additional gas guide hole in the intake valve and a further additional gas guide hole in the valve gasket in sequence to an additional crankcase discharge channel to enter the crankcase discharge hole, and is then discharged through the cylinder head discharge hole.
6. The piston compressor of claim 3, characterized in that the additional crankcase channel is a recess in communication with the crankcase high-pressure chamber; and the additional crankcase discharge channel is a recess in communication with the crankcase discharge hole.
7. The piston compressor of claim 1, characterized in that the at least one further gas discharge path comprises two gas discharge paths, along one of which the gas leaving the cylinder head high-pressure chamber and passing through an additional gas guide hole in the cylinder head gasket, an additional gas guide hole in the valve plate, an additional gas guide hole in the intake valve and an additional gas guide hole in the valve gasket in sequence to the crankcase gas guide channel enters the crankcase high-pressure chamber, then enters the crankcase discharge hole through the crankcase discharge channel, and is discharged through the cylinder head discharge hole; and along the other of which the gas enters the crankcase discharge hole and is discharged through the cylinder head discharge hole.
8. The piston compressor of claim 7, characterized in that the crankcase gas guide channel is in the form of an L-shaped recess, and comprises a first guiding portion for guiding the gas to the crankcase high-pressure chamber and a second guiding portion for guiding the gas to the crankcase discharge hole.
9. The piston compressor of claim 1, characterized in that the at least one further gas discharge path comprises a gas discharge path, along which the gas leaves the cylinder head high-pressure chamber, passes through an additional gas guide hole in the cylinder head gasket to a valve plate discharge channel in the valve plate, then enters a valve plate discharge hole, and is discharged through the cylinder head discharge hole.
10. The piston compressor of claim 9, characterized in that the valve plate discharge channel is a through-going slit or a recess in communication with the valve plate discharge hole.
11. A portable refrigerator, characterized in that the portable refrigerator comprises a piston compressor according to any one of the preceding claims.
12. The portable refrigerator according to claim 11, characterized in that the portable refrigerator is a vehicle-mounted refrigerator.
Type: Application
Filed: Mar 29, 2023
Publication Date: Jul 3, 2025
Inventors: Haibo Hao (Zhuhai), Peng Wang (Zhuhai), Weixian Guan (Zhuhai)
Application Number: 18/850,861