Device For Treatment Of Indoor Air

Abstract

The invention concerns a device (100) for treatment of indoor air. The device (100) comprises a supply air chamber (11) and from this nozzles (12a1, 12a2 . . . ) or a nozzle gap (12) to make a flow of fresh supply air flow out of the supply air chamber, which flow (J1) will induce a circulated airflow to flow out of the room (H) through a heat exchanger (10). The circulated airflow (J2) joins the supply airflow (J1), whereby the combined airflow (J1+J2) is made to flow out of the device. In the device (100) its heat exchanger (10a1, 10a2; 10) is used to either cool or heat the circulated airflow (J2). The device (100) for treatment of indoor air may also be a so-called passive beam, which can be fitted close to the ceiling of the room space (H), whereby the heated air is cooled by the heat exchanger (10) of the passive beam (100) as it ascends in the room space approaching the heat exchanger (10), from which upon being cooled it will descend back into the occupied zone of the room space (H). According to the invention, the heat exchanger (10, 10a1, 10a2) is a modular structure, which comprises several optional different heat exchanger modules (14a1, 14a2, 14a3, 14a4, 14a5), which can be connected to one another in order to form a heat exchanger structure and a device structure of the desired length.

Description

FIELD OF THE INVENTION

The invention concerns a device for treatment of indoor air.

BACKGROUND OF THE INVENTION

The state of the art knows supply air terminal devices, through which fresh supply air is conducted from a supply air chamber into a side chamber of the device. From the supply air chamber the air is led by way of nozzles into the side chamber, and said flow of fresh supply air induces a circulated air flow to flow through a heat exchanger. The combined airflow J₁+J₂ is made to flow further out of the device. In the heat exchanger, the circulated airflow J₂ is either cooled or heated. The circulated airflow J₂ is led from the room to join the fresh supply airflow J₁. In the state-of-the-art solutions, the heat exchangers are delivered from the factory according to an order made in advance. Thus, the heat exchanger is manufactured and custom-made on an individual case basis, and said supply air terminal device and the related order for a heat exchanger structure are associated with various treatment steps in the various stages of the order.

So-called passive beams are also known, which are installed in the ceiling of the room space and which comprise nothing else than a heat exchanger, whereby the heated indoor air will circulate close to the ceiling and to the heat exchanger of the passive beam located there, which heat exchanger will cool the circulated air, which when cooled will flow down into the occupied zone of the room.

SUMMARY OF THE INVENTION

This application has realized how to form a heat exchanger structure of modules. Modules are of various lengths, and the client ordering the device may thus choose the combined length he desires, and no separate device-specific custom-making is needed. Much time and work in various stages will thus be saved and the total costs of the device will thus be more advantageous. Each basic module, that is, heat exchanger module, comprises tubes and fins or other such parts to transfer heat from the air through the fins into a heat carrier made to flow inside the tubes, or in an opposite direction. The modular structure also comprises so-called connection modules and end modules as well as supply modules, that is, tube modules.

According to the invention, the heat exchanger modules are of several different lengths: for the end modules and middle modules and also different types of tubes for the connection module and the tube module. Using the connection module for tubes it is possible easily to connect modules of different lengths to one another without needing any welded connection or other such. The scope of the invention also includes an embodiment, wherein instead of the connection module a welded or soldered connection is used between the modules to be connected.

The device for treatment of indoor air according to the invention is characterized by the features presented in the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

In the following, the invention will be described by referring to some advantageous embodiments of the invention, which are shown in the figures of the appended drawings, but there is no intention to restrict the invention to these alone.

FIG. 1A is a cross-sectional view of the device for treatment of indoor air according to the invention.

FIG. 1B shows a second advantageous embodiment of the device for treatment of indoor air according to the invention.

FIG. 1C shows a device for treatment of indoor air; a so-called passive beam.

FIG. 2 shows an axonometric view of a heat exchanger according to the invention for a supply air terminal device formed of modules.

FIG. 3 is a schematic view of a circulation circuit for a heat carrier connected to heat exchangers.

FIG. 4 shows a heat exchanger module according to the invention; the module parts are shown separated from each other before they are connected together.

FIGS. 5A and 5B show a so-called connection module, which is used for connecting in a removable manner the heat exchanger module parts to each other for forming the total heat exchanger structure.

FIG. 6 shows a table of the forming of the modular structure according to the invention in order to achieve different length and structure variations.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1A shows a view in principle of an embodiment of the supply air terminal device according to the invention, wherein the modular structure according to the invention is used. As is shown in FIG. 1A, the device 100 for treatment of indoor air comprises a supply air chamber 11, into which fresh air from outside is brought through a tube set (not shown). From the supply air chamber 11 the fresh supply air is conducted by way of nozzles 12a₁, 12a₂ . . . into a mixing chamber S beside the heat exchanger 10, whereby the flow of fresh supply air J₁ conducted from nozzles 12a₁, 12a₂ will induce a circulated airflow J₂ from the room H to flow through the heat exchanger 10. Using the heat exchanger 10, the circulated airflow J₂ is either cooled or heated.

FIG. 1B shows another embodiment of the supply air terminal device according to the invention. From supply air chamber 11a flow J₁ of fresh supply air is conducted upwards through nozzles 12a₁, 12a₂ . . . , and the circulated airflow J₂ from room H is induced to flow induced by said flow J₁ through heat exchanger 10a₁, 10a₂ and further to join the flow of fresh supply air J₁. The combined airflow J₁+J₂ is made to flow upwards and further to the side from the device and back into the room space H. At the heat exchanger 10a₁, 10a₂ the room air is either cooled or heated as a circulated airflow J₂. FIG. 2 shows a heat exchanger 10, which comprises a set of tubes 13 for the heat carrier and fins 14 or other such, through which heat is carried into the room space or in an opposite direction.

FIG. 1C shows a passive beam 100 as the target device of the invention. The passive beam 100 comprises a heat exchanger 10. The passive beam 100 is fitted close to the ceiling or other such of the room space H. Reference number 10 indicates the heat exchanger in FIG. 1C. The air heated for the occupied zone in room space H rises to approach the passive beam 100 and travels above the heat exchanger 10 as shown by arrow J₂, and it is further cooled in heat exchanger 10 and it then descends back into the occupied zone. In the summer time, the heat exchanger 10 can be used to cool the circulated airflow J₂. In this structure, too, the heat exchanger 10 is one to be assembled of modules, whereby depending on the length of the passive beam 100 the heat exchanger modules can be chosen as desired in order to achieve the desired length of the heat exchanger for the room application in question.

FIG. 2 shows a heat exchanger 10 formed of modules 14a₁, 14a₂, 14a₃, 14a₄ in accordance with the invention.

FIG. 3 is a schematic view of a heat carrier circuit. The heat carrier circuit comprises branches A₁, A₂ of the tube set 13 for the heat carrier, whereby the heat carrier is made to flow circulated by a pump P through heat exchangers 10a₁ and 10a₂. According to the invention, the heat exchangers 10a₁, 10a₂ are formed of a modular structure.

FIG. 4 shows a modular structure for a heat exchanger 10. The heat exchanger comprises modules 14a₁, 14a₂, 14a₃, 14a₄ and 14a₅. The module 14a₁ is a tube module, the modules 14a₂ and 14a3 are middle modules and the module 14a₄ at one end is an end module. Tube connecting pieces, that is, connection modules 14a₅, are used between the modules. The tube connecting pieces 14a₅ are parts, into whose bushings the ends of tubes to be connected can be placed, whereby a tight connection will be formed without using any soldering or welding between the tubes. Said module 14a₅ can also be replaced by welding. Device complexes of the desired length can be obtained by choosing modules 10a₁ . . . 10a₅ of the desired length and type.

FIGS. 5A and 5B show a schematic and basic view of the use of a connection module 14a₅. As is shown in FIG. 5A, the modular structure is shown in connection with a body R. FIG. 5B shows a separate view of a modular structure 14a₂, 14a₃, 14a₅.

The modular structure according to FIG. 5A is assembled to be carried by the body R of the supply air terminal device 100 and it is connected to this with the aid of connecting pieces 14a₅ and their mounting to the body R. The connection module 14a₅ comprises a tube or bushing section/sections 50. Using a connection part 51 of the connection module 14a₅ the modules are supported on body R of the device 100

FIG. 6 shows a table of the modular structure according to the invention. The modules A comprise several different tube types; T₁, T₂ . . . T_n, modules B and C comprise different lengths L₁, L₂, L₃, L₄, L₅ . . . L_n. The modules A are so-called tube modules 14a₁. The modules B are middle modules 14a₂, 14a₃ and the modules C are so-called end modules 14a₄. Between each module a module D can be used, which is a so-called connection module 14a₅, of which there are different types M₁, M₂ . . . M_n. The modules may comprise several different lengths and/or different tube diameter sizes. The tube modules A are of several different types T₁, T₂ . . . , whereby, for example, the connection directions of the tubes may vary in the types and the desired type can be chosen for a different purpose of use. Of the modules A, B, C, D a suitable combination may be chosen for the specific application in order to form the desired device.

Claims

1. Device (100) for treatment of indoor air, which device (100) comprises a supply air chamber (11) and from this nozzles (12a1, 12a2... ) or a nozzle gap (12) to make a flow of fresh supply air flow out of the supply air chamber (11), which flow (J1) will induce a circulated airflow to flow out of the room (H) through a heat exchanger (10), which circulated airflow (J2) will join the supply airflow (J1), whereby the combined airflow (J1+J2) is made to flow out of the device, and in which device (100) a heat exchanger (10a1, 10a2; 10) is used to either cool or heat the circulated airflow (J2), or the device (100) for treatment of indoor air is a so-called passive beam, which can be fitted close to the ceiling in a room space (H), whereby the heated air is cooled by the heat exchanger (10) of the passive beam (100) as it rises upwards in the room space approaching the heat exchanger (10), from which upon being cooled it will descend back into the occupied zone in the room space (H), wherein the heat exchanger (10, 10a1, 10a2) is a modular structure, which comprises several different optional heat exchanger modules (14a1, 14a2, 14a3, 14a4, 14a5), which can be connected to one another in order to form a heat exchanger structure and device structure of the desired length.

2. Device according to claim 1 for treatment of indoor air, wherein the modular structure comprises at the input side a tube module (14a1), a middle module/middle modules (14a2, 14a3) and an end module (14a3), and that there is a connecting piece or connecting pieces (14a5), that is, a so-called connection module, by which the modules (14a2, 14a3, 14a4) can be connected to one another at their tubes in order to form a heat carrier structure of the desired length.

3. Device for treatment of indoor air according to claim 1, wherein modules of different types the modular structure comprises different lengths (L1, L2... Ln), whereby the modules can be combined as desired in order to form a heat exchanger (10) of the desired length.

4. Device for treatment of indoor air according to claim 1, wherein the connection module (14a5) comprises a body structure and therein and extending through it a tube or bushing section (50), into which the modules to be connected to the input end or outlet end can be placed at their tubes, and that the connection module (14a5) comprises a connection part (51), which can be connected to the body R of the device (100).