Air return heat exchange mechanism of three-system refrigerator

Abstract

The utility model discloses an air return heat exchange mechanism of a three-system refrigerator, which comprises a compressor, a condenser, an anti-dew pipe and a filter which are sequentially connected through an air return pipe, a first shunting port of the filter is connected with an aluminum three-way pipe I through a capillary pipe I, an evaporator I and an evaporation outlet pipe I in sequence; the second flow dividing port is connected with an aluminum three-way pipe II through a capillary pipe II, an evaporator II and an evaporation outlet pipe II in sequence, the third flow dividing port is connected with an aluminum three-way pipe I through a capillary pipe III and is connected with an evaporator III through the aluminum three-way pipe I, the aluminum three-way pipe II and an evaporation inlet pipe confluence, and the evaporator III is connected with the compressor through an air return heat exchange pipe; the first evaporation outlet pipe, the second evaporation outlet pipe, the evaporation inlet pipe, the air return heat exchange pipe and all air return pipes in the air return heat exchange mechanism are aluminum pipelines. According to the three-system refrigerator, refrigerant circulation conveying through the all-aluminum pipeline of the three-system refrigerator is achieved, the dead weight of the three-system refrigerator can be reduced, and the transportation difficulty and cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of three-system refrigerator refrigeration, and particularly relates to a return air heat exchange mechanism of a three-system refrigerator. Background Art

[0002] In a traditional three-system refrigerator, the refrigerant comes out of the compressor, passes through the anti-condensation pipe and the condenser, and then is divided into three paths by a four-way valve, and is respectively connected to capillary tube one, capillary tube two, and capillary tube three. Capillary tube one is connected to the inlet of evaporator one, and capillary tube two is connected to the inlet of evaporator two. Subsequently, the outlet of evaporator one, the outlet of evaporator two, and capillary tube three merge through a copper four-way pipe and are then connected to the inlet of evaporator three. The outlet of evaporator three is connected to the return air heat exchange pipe and then returns to the compressor.

[0003] The traditional three-system refrigerator has the following three disadvantages:

[0004] 1. High cost: The materials of the return air heat exchange pipe and the copper four-way pipe are both copper pipes, which makes the three-system refrigerator itself relatively heavy, and is not conducive to reducing the transportation difficulty and cost.

[0005] 2. High rejection rate: The copper has a large weight and high hardness, which causes the solder joints of the copper four-way pipe to be subjected to large stress, and it is easy to crack and leak during transportation, resulting in a high rejection rate.

[0006] 3. Difficult manufacturing: The all-copper pipe and the capillary tube use tin soldering, and the consistency of the tin soldering process is poor, and the performance is difficult to guarantee. Content of the Utility Model

[0007] The purpose of the utility model is to provide a return air heat exchange mechanism of a three-system refrigerator to solve the technical problems in the above background.

[0008] The purpose of the utility model can be realized by the following technical solutions:

[0009] A return air heat exchange mechanism of a three-system refrigerator includes a compressor, a condenser, an anti-dew tube, and a filter that are sequentially connected through a return air pipe. The outlet of the filter is respectively connected to the inlets of capillary tube one, capillary tube two, and capillary tube three.

[0010] The outlet of capillary tube one is connected to the inlet of evaporator one, and the outlet of evaporator one is connected to one inlet of aluminum three-way pipe one through evaporation outlet pipe one.

[0011] The outlet of capillary tube three is connected to the other inlet of aluminum three-way pipe one.

[0012] The outlet of capillary tube two is connected to the inlet of evaporator two, and the outlet of evaporator two is connected to one inlet of aluminum three-way pipe two through evaporation outlet pipe two.

[0013] One outlet of the aluminum three-way pipe is connected to another inlet of the second aluminum three-way pipe through a return air pipe. The outlet of the second aluminum three-way pipe is connected to the inlet of the third evaporator through an evaporation inlet pipe. The outlet of the third evaporator is connected to the compressor through a return air heat exchange pipe.

[0014] Among them, the first evaporation outlet pipe, the second evaporation outlet pipe, the evaporation inlet pipe, the return air heat exchange pipe, and all the return air pipes in the return air heat exchange mechanism are all aluminum pipes.

[0015] As a further solution of the present invention: the outlet of the filter is connected to the inlet of the four-way valve through a return air pipe, and the outlet of the four-way valve is respectively connected to the inlets of the first capillary tube, the second capillary tube, and the third capillary tube.

[0016] As a further solution of the present invention: the return air pipe between the filter and the four-way valve is an aluminum pipe.

[0017] As a further solution of the present invention: the connection positions of the inlets and outlets of the four-way valve, the first aluminum three-way pipe, and the second aluminum three-way pipe are all welded connections.

[0018] The beneficial effects of the present invention:

[0019] (1) Realize the circulation and transportation of refrigerant in the whole-aluminum pipeline of the three-system refrigerator. The whole-aluminum pipeline can reduce the self-weight of the three-system refrigerator, reduce the transportation difficulty and cost, and at the same time reduce the raw material cost, thereby narrowing the cost difference between the multi-system refrigerator and the single-system refrigerator, enhancing the product competitiveness of the three-system in the refrigerator market, and enabling each user to feel the good experience brought by the three-system;

[0020] (2) In the return air heat exchange mechanism of the present application, the first aluminum three-way pipe and the second aluminum three-way pipe are connected in series to replace a copper four-way pipe, achieving the effect of converging three shunts into one path. The function of using the aluminum three-way pipe for shunt and convergence connection can solve the problem of concentrated stress on a single part, avoiding the situation of easy pipe cracking, leakage, and high scrap rate during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 is a schematic structural diagram of the present invention;

[0023] Figure 2 is a system flow chart during the refrigeration of the refrigerator in the embodiment of the present invention.

[0024] In the figure: 100, Evaporator 1; 101, Evaporation outlet pipe 1; 200, Evaporator 2; 201, Evaporation outlet pipe 2; 300, Evaporator 3; 301, Evaporation inlet pipe; 400, Capillary tube 1; 500, Capillary tube 2; 600, Capillary tube 3; 700, Aluminum three-way pipe 1; 800, Aluminum three-way pipe 2; 900, Return air heat exchange pipe. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] In the description of the present invention, it should be understood that the terms indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention; in the description of the present invention, the meaning of "a plurality" and "several" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] Please refer to Figure 1 and Figure 2 As shown, the present invention is a return air heat exchange mechanism for a three-system refrigerator, including a compressor, a condenser, an anti-condensation tube, and a filter connected in sequence through a return air pipe. The outlet of the filter is respectively connected to the inlets of capillary tube 1 (400), capillary tube 2 (500), and capillary tube 3 (600); the outlet of capillary tube 1 (400) is connected to the inlet of evaporator 1 (100), and the outlet of evaporator 1 (100) is connected to one inlet of aluminum three-way pipe 1 (700) through evaporation outlet pipe 1 (101); the outlet of capillary tube 3 (600) is connected to the other inlet of aluminum three-way pipe 1 (700); the outlet of capillary tube 2 (500) is connected to the inlet of evaporator 2 (200), and the outlet of evaporator 2 (200) is connected to one inlet of aluminum three-way pipe 2 (800) through evaporation outlet pipe 2 (201); the outlet of aluminum three-way pipe 1 (700) is connected to the other inlet of aluminum three-way pipe 2 (800) through a return air pipe, the outlet of aluminum three-way pipe 2 (800) is connected to the inlet of evaporator 3 (300) through evaporation inlet pipe 301, and the outlet of evaporator 3 (300) is connected to the compressor through return air heat exchange pipe 900; wherein, evaporation outlet pipe 1 (101), evaporation outlet pipe 2 (201), evaporation inlet pipe 301, return air heat exchange pipe 900, and all return air pipes in the return air heat exchange mechanism are respectively aluminum pipes.

[0028] During the refrigeration process of a three-system refrigerator, a three-system refrigerator with a circulating refrigeration system is formed by a compressor, a condenser, a dew-proof pipe, a filter, an evaporator 1 - 100, an evaporator 2 - 200, and an evaporator 3 - 300. The three-system refrigerator has advantages such as moisture preservation and no odor mixing. In this application, the evaporation outlet pipe 1 - 101, the evaporation outlet pipe 2 - 201, the evaporation inlet pipe 301, the return air heat exchange pipe 900, and all the return air pipes in the return air heat exchange mechanism are respectively designed as aluminum pipes, and an aluminum three-way pipe 1 - 700 and an aluminum three-way pipe 2 - 800 are used in series to replace a copper four-way pipe, achieving the effect of combining three branches into one path, so as to realize the circulation of refrigerant in the three-system refrigerator with all-aluminum material pipes. The all-aluminum material pipes can reduce the self-weight of the three-system refrigerator, and can reduce the transportation difficulty and cost. At the same time, the raw material cost can be reduced, thereby reducing the cost difference between the multi-system refrigerator and the single-system refrigerator, enhancing the product competitiveness of the three-system in the refrigerator market, and enabling each user to feel the good experience brought by the three-system.

[0029] In the return air heat exchange mechanism of this application, an aluminum three-way pipe 1 - 700 and an aluminum three-way pipe 2 - 800 are used in series to replace a copper four-way pipe, achieving the effect of combining three branches into one path. The function of using aluminum three-way pipes for branch connection and convergence can solve the problem of concentrated stress on a single part, so as to avoid the situation of easy pipe cracking, leakage, and high scrap rate during transportation. It should be understood that in view of the current process development, the aluminum three-way pipe technology is already very mature and is widely used in air conditioners, and its compressive capacity meets the requirements of the three-system refrigerator for branch flow.

[0030] In the return air heat exchange mechanism of this application, it is possible to realize the design of circulating refrigerant with all-aluminum material pipes except for the capillary tube. As for the loss of heat exchange efficiency, it can be compensated by lengthening the heat exchange length and the process of machine pasting, and finally achieve substitution, achieving the advantages of reliability and cost.

[0031] In this specific embodiment, the outlet of the filter is connected to the inlet of the four-way valve through a return air pipe, and the outlets of the four-way valve are respectively connected to the inlets of capillary tube 1 - 400, capillary tube 2 - 500, and capillary tube 3 - 600. The return air pipe between the filter and the four-way valve is an aluminum pipe; it is convenient to divide the refrigerant transported by the filter into capillary tube 1 - 400, capillary tube 2 - 500, and capillary tube 3 - 600 through a four-way valve with one inlet and three outlets.

[0032] In this specific embodiment, the connection positions of the inlets and outlets of the four-way valve, the aluminum three-way pipe 1 - 700, and the aluminum three-way pipe 2 - 800 are all welded connections; so that the sealing connection at each branch part is firm, preventing the occurrence of connection leakage.

[0033] The above has described in detail an embodiment of the present utility model, but the content described above is only a preferred embodiment of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. All equivalent changes and improvements made according to the scope of application of the present utility model shall still fall within the scope covered by the patent of the present utility model.

Claims

1. A suction heat exchange mechanism for a three-system refrigerator, comprising a compressor, a condenser, a dew-proof tube and a filter which are connected in sequence through a suction pipe, characterized in that, The outlet of the filter is respectively connected to the inlets of capillary tube one (400), capillary tube two (500), and capillary tube three (600). The outlet of capillary tube one (400) is connected to the inlet of evaporator one (100), and the outlet of evaporator one (100) is connected to one inlet of aluminum three-way pipe one (700) through evaporation outlet pipe one (101). The outlet of capillary tube three (600) is connected to the other inlet of aluminum three-way pipe one (700). The outlet of capillary tube two (500) is connected to the inlet of evaporator two (200), and the outlet of evaporator two (200) is connected to one inlet of aluminum three-way pipe two (800) through evaporation outlet pipe two (201). The outlet of aluminum three-way pipe one (700) is connected to the other inlet of aluminum three-way pipe two (800) through a return air pipe, the outlet of aluminum three-way pipe two (800) is connected to the inlet of evaporator three (300) through evaporation inlet pipe (301), and the outlet of evaporator three (300) is connected to the compressor through return air heat exchange pipe (900). Among them, evaporation outlet pipe one (101), evaporation outlet pipe two (201), evaporation inlet pipe (301), return air heat exchange pipe (900), and all return air pipes in the return air heat exchange mechanism are respectively aluminum pipes.

2. The suction heat exchange mechanism of a three-system refrigerator according to claim 1, characterized in that, The outlet of the filter is connected to the inlet of the four-way valve through a return air pipe, and the outlet of the four-way valve is respectively connected to the inlets of capillary tube one (400), capillary tube two (500), and capillary tube three (600).

3. The gas return heat exchange mechanism of a three-system refrigerator according to claim 2, characterized in that, The return air pipe between the filter and the four-way valve is an aluminum pipe.

4. The gas return heat exchange mechanism of a three-system refrigerator according to claim 2, characterized in that The connection positions of the inlets and outlets of the four-way valve, aluminum three-way pipe one (700), and aluminum three-way pipe two (800) are respectively welded connections.

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