An air conditioning air heat exchanger device with optimized structure

Abstract

The utility model relates to the technical field of air source heat pumps, and in particular to an air conditioning air heat exchanger device with optimized structure. The device includes a capillary assembly, a gas collecting pipe, a tee, a dual-mode module and an air pipe assembly; the capillary assembly includes a distributor and a plurality of capillary splitting and dividing tubes, the input ends of the plurality of capillary splitting and dividing tubes are connected to the output ends of the distributor, the output ends of the plurality of capillary splitting and dividing tubes are all connected to one of the interfaces of the tee, and the remaining two interfaces of the tee, one of which is connected to the gas collecting pipe, and the other is connected to the dual-mode module; wherein, the input end of the distributor and the output end of the gas collecting pipe are interconnected, and a valve body is provided on the distributor and the gas collecting pipe near the connection; the valve body is a one-way valve or a solenoid valve. The device is provided with a valve body at the capillary assembly and the gas collecting pipe near the connection, which can prevent the occurrence of liquid cross-talk in the entire device.

Description

Technical Field

[0001] The utility model relates to the technical field of air source heat pumps, in particular to an air conditioning air heat exchanger device with optimized structure. Background Art

[0002] At present, the air heat exchanger in the air source heat pump air conditioner acts as both an evaporator and a condenser due to the requirements of the cooling and heating modes. When used as an evaporator in the heating mode, the liquid inlet needs to be diverted by a capillary assembly in order to obtain a better heat exchange effect. When used as a condenser in the cooling mode, the resistance is increased when the condensed liquid flows through the capillary assembly at the liquid outlet. Too large a condensation pressure drop may result in a small degree of subcooling, liquid flashing before the throttle valve, and severe performance degradation.

[0003] For example, a fin coil for a variable frequency air-cooled heat pump provided by a Chinese patent (application number 202320563688.9; application date 2023.03.21), the utility model patent includes a multi-layer heat exchange tube evenly arranged from top to bottom in a shell, and fins are expanded on the outer wall of the heat exchange tube. An air collecting pipe and a tee are respectively provided on the left and right sides of the shell. The air collecting pipe is connected to one end of the heat exchange tube, and the other end of the heat exchange tube is connected to one of the interfaces of the tee. The remaining two interfaces of the tee, the higher interface is connected to the capillary liquid distribution tube, and the lower interface is connected to the collecting pipe. Each capillary liquid distribution tube is then connected to the distributor and the distributor supply pipe in turn. Relative to the other end of the collecting pipe connected to the tee, it is connected to the side wall of the distributor supply pipe, and a one-way valve for controlling the flow of fluid from the collecting pipe to the distributor supply pipe is provided in the collecting pipe near the connection.

[0004] In the above-mentioned reference documents, when the finned coil is used as a condenser, its refrigerant can be quickly collected and discharged through the collecting pipe to prevent accumulation in the coil. However, it is difficult to avoid liquid cross-talk in the entire device by only setting a one-way valve on the distributor, which is not conducive to high-precision work. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide an air conditioning air heat exchanger device with an optimized structure, which is provided with a valve body near the connection between the capillary tube assembly and the gas collecting pipe, so as to avoid liquid cross-linking in the whole device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] A structurally optimized air-conditioning air heat exchanger device comprises a capillary tube assembly, an air collecting pipe fitting, a tee, a dual-mode module and an air pipe assembly; the capillary tube assembly comprises a distributor and a plurality of capillary splitting and dividing tubes, the input ends of the plurality of capillary splitting and dividing tubes are connected to the output end of the distributor, the output ends of the plurality of capillary splitting and dividing tubes are all connected to one of the interfaces of the tee, one of the remaining two interfaces of the tee is connected to the air collecting pipe fitting, and the other is connected to the dual-mode module; wherein the input end of the distributor is connected to the output end of the air collecting pipe fitting, and valve bodies are provided on the distributor and the air collecting pipe fitting near the connection.

[0008] Preferably, the valve body is a one-way valve or a solenoid valve.

[0009] Preferably, side plates are installed on both sides of the dual-mode module, and multiple layers of heat exchange tubes are evenly expanded from top to bottom on the side plates. The heat exchange tubes on one side are welded to the air pipe assembly by flame brazing, and the heat exchange tubes on the other side are connected to the three-way interface by setting a connecting pipe.

[0010] Preferably, the gas collecting pipe fitting comprises a first pipe fitting arranged vertically and a second pipe fitting arranged horizontally, and a plurality of air inlets evenly distributed axially are provided on the outer diameter of the first pipe fitting, and the air inlets are connected to the interface of the tee by setting the connecting pipe; one end of the second pipe fitting is integrally connected to the bottom of the first pipe fitting, and the other end is connected to the input end of the distributor by means of the tee or by insertion welding, and the valve body is arranged in the middle of the second pipe fitting.

[0011] In summary, the advantages of the utility model are as follows:

[0012] When the whole device is in heating mode, several capillary splitters can better divert the medium; when the whole device is in cooling mode, the medium flows from the dual-mode module to the gas collecting pipe and flows out from the above-mentioned gas outlet, which can overcome the problem of large condensation pressure drop of the device to achieve the best heat exchange performance; in order to better allow the medium to run according to the established route in cooling / heating mode, valve bodies are provided on the input end of the distributor and the output end of the gas collecting pipe. The two valve bodies are specifically provided on the pipeline near the connection of the distributor and in the middle of the second pipe. The provision of two valve bodies can also prevent the occurrence of cross-liquid in the whole device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the structure of the device;

[0014] Figure 2 A schematic diagram of the local structure of the connection between the capillary assembly, the gas collecting pipe, the dual-mode module and the tee;

[0015] Figure numerals: 1. capillary assembly; 2. gas collecting pipe fitting; 3. tee; 4. dual-mode module; 5. gas pipe assembly; 6. valve body; 11. distributor; 12. capillary splitter tube; 21. first pipe fitting; 22. second pipe fitting; 23. air inlet; 41. side plate; 42. heat exchange tube; 43. connecting pipe. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0017] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0018] It should also be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0019] The specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings.

[0020] like Figure 1 to Figure 2 As shown, a structurally optimized air heat exchanger device for air conditioning includes a capillary assembly 1, an air collecting pipe 2, a tee 3, a dual-mode module 4 and an air pipe assembly 5. The heat exchanger device formed by combining the above components enables the air conditioner to have a heating mode and a cooling mode, meeting people's needs for the two modes.

[0021] The realization of cooling and heating modes mainly relies on the dual-mode module 4, which is internally provided with fins and heat exchange tubes 42, and changes the movement direction of the medium to evaporate or condense the refrigerant, thereby realizing the switching between cooling mode and heating mode.

[0022] like Figure 1As shown, specifically, the dual-mode module 4 includes an outer shell, and side plates 41 are installed on both sides of the outer shell, and multiple layers of heat exchange tubes 42 are uniformly expanded from top to bottom on the side plates 41 on both sides (the heat exchange tubes 42 and the fins arranged inside are expanded by tube expansion). The heat exchange tube 42 on one side is welded to the air pipe assembly 5 by flame brazing, and the heat exchange tube 42 on the other side is connected to one of the interfaces of the tee 3 by setting a connecting tube 43.

[0023] The above-mentioned arrangement of the side plate 41 can protect the fins and heat exchange tubes 42 in the module and can also provide a supporting basis; the above-mentioned fins are not marked in the figure.

[0024] like Figure 1 to Figure 2 As shown, the other two interfaces of the tee 3 are connected to the capillary assembly 1 and the gas collecting pipe 2 respectively.

[0025] Specifically, the capillary assembly 1 includes a distributor 11 and a plurality of capillary splitting tubes 12, the input ends of the plurality of capillary splitting tubes 12 are connected to the output ends of the distributor 11, and the output ends of the plurality of capillary splitting tubes 12 are connected to one of the interfaces of the remaining tees 3. When the entire device is in heating mode, the plurality of capillary splitting tubes 12 can better split the medium.

[0026] The gas collecting pipe fitting 2 includes a first pipe fitting 21 arranged vertically and a second pipe fitting 22 arranged horizontally. The outer diameter of the first pipe fitting 21 is provided with a plurality of air inlets 23 evenly distributed in the axial direction. The air inlet 23 is connected to the last remaining interface of the tee 3 by setting the connecting pipe 43. Among them, one end of the second pipe fitting 22 is integrally connected to the bottom of the first pipe fitting 21, and the other end is connected to the input end of the distributor 11 through the tee 3 or inserted and welded, so that the two share the same air delivery port, which is recorded as A (the input port in the heating mode and the output port in the cooling mode).

[0027] When the entire device is in cooling mode, the medium flows from the dual-mode module 4 to the gas collecting pipe 2 and flows out from the above-mentioned gas delivery port, which can overcome the problem of large condensation pressure drop of the device to achieve optimal heat exchange performance.

[0028] like Figure 1 to Figure 2 As shown, in order to better allow the medium to run according to the established route in the cooling / heating mode, a valve body 6 is provided at the input end of the distributor 11 and the output end of the gas collecting pipe 2. The two valve bodies 6 are specifically provided on the pipeline near the connection of the distributor 11 and in the middle of the second pipe 22. The provision of two valve bodies 6 can also prevent the entire device from having liquid cross-talk, and the control flow direction of the two valve bodies 6 is Figure 1 Described in .

[0029] Furthermore, the valve body 6 is not limited to a one-way valve, and may also be configured as an electromagnetic valve that can only perform one-way movement through electromagnetic control of the medium.

[0030] Specific working principle:

[0031] In the air conditioning air heat exchanger device of the present technical solution, when in heating mode, the dual-mode module 4 acts as an evaporator, and the liquid medium enters from point A, passes through the tee 3, the pipeline on the distributor 11, the one-way valve, and the capillary liquid pipe 12 to enter the dual-mode module 4 for heat exchange, and is discharged from the outlet of the air pipe assembly 5.

[0032] When in cooling mode, when the dual-mode module 4 acts as a condenser, the gaseous medium enters the dual-mode module 4 from the gas pipe assembly 5 for heat exchange, passes through the connecting pipe 43, the tee 3, the first pipe 21 and the second pipe 22, and is finally discharged from A through the tee 3.

[0033] In cooling / heating mode, since the valve body 6 can only allow the medium to move in one direction, it is ensured that each medium will not flow in parallel during transmission, thereby improving accuracy.

[0034] The above is a description of the embodiments of the utility model. Through the above description of the disclosed embodiments, professionals and technicians in the field can implement or use the utility model. Various modifications to these embodiments will be obvious to professionals and technicians in the field. The general principles defined in this article can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown in this article, but will conform to the widest range consistent with the principles and novelties disclosed in this article.

Claims

1. A structurally optimized air conditioning air heat exchanger device, characterized in that: The device comprises a capillary tube assembly (1), a gas collecting tube (2), a tee (3), a dual-mode module (4) and a gas tube assembly (5); the capillary tube assembly (1) comprises a distributor (11) and a plurality of capillary liquid dispensing tubes (12); the input ends of the plurality of capillary liquid dispensing tubes (12) are connected to the output ends of the distributor (11); the output ends of the plurality of capillary liquid dispensing tubes (12) are connected to one of the interfaces of the tee (3); one of the remaining two interfaces of the tee (3) is connected to the gas collecting tube (2), and the other is connected to the dual-mode module (4); wherein the input end of the distributor (11) and the output end of the gas collecting tube (2) are in communication with each other, and a valve body (6) is provided on the distributor (11) and the gas collecting tube (2) near the connection.

2. The air conditioning air heat exchanger device with optimized structure according to claim 1, characterized in that: The valve body (6) is a one-way valve or a solenoid valve.

3. The air conditioning air heat exchanger device with optimized structure according to claim 1, characterized in that: Side plates (41) are installed on both sides of the dual-mode module (4), and multiple layers of heat exchange tubes (42) are uniformly expanded from top to bottom on the side plates (41). The heat exchange tubes (42) on one side are welded to the air pipe assembly (5) by flame brazing, and the heat exchange tubes (42) on the other side are connected to the interface of the tee (3) by providing a connecting tube (43).

4. The structure-optimized air-conditioning air heat exchanger device according to claim 1 or 2, characterized in that: The gas collecting pipe fitting (2) comprises a first pipe fitting (21) arranged vertically and a second pipe fitting (22) arranged horizontally; a plurality of air inlets (23) evenly distributed in the axial direction are arranged on the outer diameter of the first pipe fitting (21), and the air inlets (23) are connected to the interface of the tee (3) by means of a connecting pipe (43); one end of the second pipe fitting (22) is integrally connected to the bottom of the first pipe fitting (21), and the other end is connected to the input end of the distributor (11) by means of the tee (3) or is inserted and welded, and the valve body (6) is arranged in the middle of the second pipe fitting (22).

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