VACUUM PUMP STRUCTURE
A vacuum pump structure includes a motor, two pump bodies, and a grip. The two pump bodies are connected to the motor and driven by the motor, respectively. Each pump body has a pump chamber with a connection port for connecting a suction pipe. The grip has two ends respectively connected to the two pump bodies for carrying the vacuum pump structure. A communication pipe is disposed inside the grip. The communication pipe is in communication with the pump chambers of the two pump bodies. The two pump bodies jointly perform two working modes at the same time to improve work efficiency.
The present invention relates to a vacuum pump, and more particularly to a vacuum pump structure having two pump bodies.
BACKGROUND OF THE INVENTIONCommon electrical equipment, such as air conditioners, refrigerators, etc., circulate the refrigerant in the piping system to achieve a refrigeration effect through the process of evaporation and condensation. In order to avoid damage to the system caused by air remaining in the piping system during the operation of the refrigerant, it is necessary to first evacuate the air in the piping system by a vacuum pump, namely, vacuum pumping.
A common vacuum pump has a motor and a pump body. The pump body is connected to a space to be pumped through a suction pipe. The pump body is driven by the motor to perform pumping. However, the pumping efficiency performed by only one pump body is insufficient, and there is a disadvantage of spending too much time. Therefore, the industry has developed a vacuum pump with two pump bodies that are connected by a motor. Each pump body has a connection port for connecting a suction pipe. In use, as shown in
However, in the state as shown in
Accordingly, the inventor of the present invention has devoted himself based on his many years of practical experiences to solve these problems.
SUMMARY OF THE INVENTIONThe primary object of the present invention is to provide a vacuum pump structure, which is provided with a built-in communication pipe communicating with two pump bodies, thereby vacating the connection port of each pump body for respectively connecting different spaces to be pumped. Each space can be jointly pumped by the two pump bodies simultaneously, thereby improving the pumping efficiency.
Another object of the present invention is to provide a vacuum pump structure, which is provided with a grip having the communication pipe communicating with the two pump bodies, so that there is no need for additional structure.
In order to achieve the above objects, the present invention provides a vacuum pump structure, comprising a motor, two pump bodies, and a grip. The two pump bodies are connected to the motor and driven by the motor, respectively. The pump bodies each have a pump chamber. The pump chamber is provided with a connection port for connecting a suction pipe. The grip has two ends respectively connected to the two pump bodies for carrying the vacuum pump structure. A communication pipe is disposed inside the grip. The communication pipe is in communication with the pump chambers of the two pump bodies.
Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.
Referring to
As shown in
The vacuum pump structure further comprises a grip 4. Two ends of the grip 4 are fixedly connected to the two pump bodies 2A, 2B, respectively, thereby enabling the user to carry the entire device by hand. A communication pipe 41 is disposed inside the grip 4, as shown in
Furthermore, the present invention is more suitable for performing two pumping operations simultaneously. As shown in
Another advantage of the present invention is that the communication pipe 41 communicating with the two pump bodies 2A, 2B is embedded in the grip 4. The purpose of connecting the two pump bodies 2A, 2B can be achieved without additional construction, thereby simplifying the overall structure.
Although particular embodiments of the present invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the present invention. Accordingly, the present invention is not to be limited except as by the appended claims.
Claims
1. A vacuum pump structure, comprising:
- a motor;
- two pump bodies, connected to the motor and driven by the motor, the pump bodies each having a pump chamber, each of the pump chambers being provided with a connection port for connecting a suction pipe;
- a grip, having two ends respectively connected to the two pump bodies; a communication pipe being disposed inside the grip, the communication pipe being in communication with the pump chambers of the two pump bodies.
2. The vacuum pump structure as claimed in claim 1, wherein the connection port of at least one of the pump bodies is provided with a pressure gauge for measuring the degree of vacuum.
3. The vacuum pump structure as claimed in claim 1, wherein the connection port of each of the pump bodies is provided with a check valve, and the connection port is provided with a pressure gauge in front of the check valve for measuring the degree of vacuum.
Type: Application
Filed: Oct 15, 2019
Publication Date: Apr 23, 2020
Inventor: SHENG CHIH CHIU (16653017)
Application Number: 16/653,017