Heat exchange device with embedded purification unit and air conditioning system

Abstract

The invention belongs to the technical field of heat management, and discloses a heat exchange device with an embedded purification unit and an air conditioning system. The heat exchange device with the embedded purification unit comprises a heat exchanger body and the purification unit, the heat exchanger body comprises a heat exchange flow channel, and a refrigerant circulates in the heat exchange flow channel and is used for exchanging heat with air; the purification unit is embedded in the heat exchanger body, and a first inlet of the purification unit communicates with the refrigerant inlet pipe so as to introduce a gas-liquid two-phase refrigerant; and a liquid outlet of the purification unit communicates with the second inlet of the heat exchange flow channel, and the purification unit is used for purifying the gas-liquid two-phase refrigerant and outputting the liquid refrigerant to the second inlet of the heat exchange flow channel, so that the refrigerant flowing in the heat exchange flow channel is the liquid refrigerant. When a heat exchange runner exchanges heat, a refrigerant circulating in the heat exchange runner is in a liquid state, so that the heat exchange effect and the heat exchange efficiency are improved, and the development cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat management, in particular to a heat exchange device with an embedded purification unit and an air conditioning system. BACKGROUND

[0002] The refrigerant heat exchanger is the core component of the air conditioning system, and the main function is to realize heat transfer between the refrigerant and the external environment through heat exchange, so as to adjust the indoor temperature.

[0003] At present, as shown in the background art of the patent with publication number CN110168303A, when the refrigerant leaves the expansion member and enters the heat exchanger, the refrigerant is in a two-phase state and exists in liquid and gas phases. And as shown in the background art of the patent with publication number CN114754521A, the existing dry evaporator has two-phase separation of refrigerant at the inlet, which will cause uneven mixing of gas-liquid two-phase when the refrigerant enters the heat exchange pipe, affecting the heat exchange effect of the heat exchanger. It shows that the state of the refrigerant entering the heat exchanger in the common refrigerant heat exchanger is mostly gas-liquid two-phase state, the heat exchange mechanism is relatively complex, and the internal refrigerant heat exchange is extremely uneven, which leads to extremely uneven temperature at the outlet of the heat exchanger. This not only affects the heat exchange efficiency, but also affects the thermal comfort. In order to improve this situation, it is often necessary to add flow distribution plates and / or flow resistance sheets inside the heat exchanger to adjust the flow distribution of the gas-liquid two-phase state inside the heat exchanger, so that the internal refrigerant heat exchange is more uniform. However, this adjustment is difficult, and it is necessary to continuously adjust the flow distribution design during the design stage, and then test and verify, which not only increases the development cycle, but also increases the development cost.

[0004] Therefore, there is an urgent need for a heat exchange device with an embedded purification unit and an air conditioning system to solve the above technical problems. SUMMARY

[0005] An object of the present application is to provide a heat exchange device with an embedded purification unit, which can make the refrigerant flowing in the heat exchange flow channel be liquid refrigerant, improve the heat exchange effect and heat exchange efficiency, and reduce the development cost.

[0006] To achieve this object, the present application adopts the following technical solutions:

[0007] The heat exchange device with an embedded purification unit comprises:

[0008] The heat exchanger body comprises a heat exchange flow channel, and the refrigerant flows in the heat exchange flow channel to exchange heat with air.

[0009] The purification unit is embedded in the heat exchanger body, and a first inlet of the purification unit is communicated with the refrigerant inlet pipe to introduce the gas-liquid two-phase refrigerant.

[0010] Optionally, the purification unit comprises a purification tank body and a purification structure, a first inlet of the purification tank body is communicated with the refrigerant inlet pipe, a liquid outlet of the purification tank body is communicated with the second inlet of the heat exchange channel, and the purification structure is arranged in the purification tank body.

[0011] Optionally, the liquid outlet of the purification tank body is sealingly communicated with a liquid outlet pipe, and the liquid outlet pipe is communicated with the second inlet of the heat exchange channel.

[0012] Optionally, the purification unit is provided with a plurality of liquid outlets, and the liquid outlets of the plurality of purification units are all communicated with the second inlet of the heat exchange channel.

[0013] Optionally, the purification unit further comprises a gas outlet, the gas outlet is used for flowing out the purified gaseous refrigerant, the gas outlet is communicated with a refrigerant return pipe, and an outlet of the heat exchange channel is communicated with the refrigerant return pipe.

[0014] Optionally, the gas outlet is provided with at least one.

[0015] Optionally, the purification unit further comprises a gas outlet pipe, and the gas outlet pipe is communicated with the gas outlet and the refrigerant return pipe.

[0016] Optionally, the heat exchanger body further comprises a purification cavity, and the purification unit is arranged in the purification cavity.

[0017] Optionally, the heat exchanger body is a non-phase-change heat exchanger.

[0018] Another object of the present application is to provide an air conditioning system comprising a heat exchange device embedded with a purification unit, so that the refrigerant flowing in the heat exchange channel is liquid, the heat exchange effect and efficiency are improved, and the development cost is reduced.

[0019] The present application has the following advantages:

[0020] The application provides a heat exchange device with an embedded purification unit and an air conditioning system. The heat exchange device with the embedded purification unit is characterized in that the gaseous and liquid phase refrigerant flowing into the refrigerant inlet pipe can be purified by the purification unit, only the liquid refrigerant is output into the heat exchange flow channel, the heat exchange between the heat exchange flow channel and air is more uniform, and the heat exchange efficiency and effect are improved. Meanwhile, the flow uniformizing plate and / or flow blocking piece are not needed, the number of parts and tests is reduced, the development cycle is shortened, and the development cost is reduced. In addition, the heat exchange flow channel is filled with liquid refrigerant, the simulation result is more accurate when the heat exchange flow channel is simulated, and the reliability of the heat exchange device with the embedded purification unit is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 Fig. 1 is a structural schematic view of the heat exchange device with the embedded purification unit provided by the embodiment of the application.

[0022] In the drawings:

[0023] 100, heat exchange flow channel; 101, purification cavity;

[0024] 200, purification unit; 201, first inlet; 202, liquid outlet; 203, gas outlet; 210, purification tank body; 220, liquid outlet pipe; 230, gas outlet pipe;

[0025] 300, refrigerant inlet pipe; 400, refrigerant return pipe. DETAILED DESCRIPTION

[0026] The application will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the application, but not to limit the application. In addition, it should be noted that, for the convenience of description, only the parts related to the application are shown in the drawings, but not all the structures.

[0027] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrated; can be directly connected, or indirectly connected through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0028] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature is "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature is "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0029] In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in description and have no special meaning.

[0030] Reference will now be made to Figure 1 The present application provides a heat exchange device with an embedded purification unit and an air conditioning system.

[0031] The present embodiment provides a heat exchange device with an embedded purification unit, which is used for heat exchange in a heat exchange flow channel 100 in a heat exchanger body, and the refrigerant flowing inside is in liquid state, thereby improving heat exchange effect and heat exchange efficiency and reducing development cost.

[0032] Specifically, the heat exchange device with an embedded purification unit includes a heat exchanger body and a purification unit 200, wherein the heat exchanger body includes a heat exchange flow channel 100, and the heat exchange flow channel 100 flows with refrigerant for heat exchange with air; the purification unit 200 is embedded in the heat exchanger body, and a first inlet 201 of the purification unit 200 is communicated with a refrigerant inlet pipe 300 to introduce refrigerant in gas-liquid two-phase state; a liquid outlet 202 of the purification unit 200 is communicated with a second inlet of the heat exchange flow channel 100, and the purification unit 200 is used for purifying the refrigerant in gas-liquid two-phase state and outputting the refrigerant in liquid state to the second inlet of the heat exchange flow channel 100, so that the refrigerant flowing in the heat exchange flow channel 100 is all in liquid state.

[0033] The heat exchange device with the embedded purification unit in the embodiment can purify the gaseous refrigerant after the gas-liquid two-phase refrigerant flowing into the refrigerant inlet pipe 300 passes through the purification unit 200, and only output the liquid refrigerant into the heat exchange flow channel 100, so that the heat exchange between the heat exchange flow channel 100 and the air is more uniform, and the heat exchange efficiency and effect are improved. Meanwhile, it is not necessary to additionally provide a flow uniformizing plate and / or a flow blocking piece, so that the number of parts and structures and the number of tests are reduced, the development cycle is shortened, and the development cost is reduced. Moreover, since the heat exchange flow channel 100 is filled with liquid refrigerant, the simulation result is more accurate when the heat exchange flow channel 100 is simulated, and the reliability of the heat exchange device with the embedded purification unit is improved.

[0034] In use, the gas-liquid mixed refrigerant enters the purification unit 200 through the refrigerant inlet pipe 300, is purified by the purification unit 200, and flows out and is transported into the heat exchange flow channel 100, so that the refrigerant entering the heat exchange flow channel 100 is liquid refrigerant, and the heat exchange efficiency and effect in the heat exchange flow channel 100 are improved.

[0035] It should be noted that the specific principle of purifying the gas-liquid two-phase refrigerant by the purification unit 200 includes but is not limited to the following modes: separating the gas-liquid two-phase refrigerant and separately transporting the liquid refrigerant into the heat exchange flow channel 100, purifying the gas-liquid two-phase refrigerant so that the refrigerant output into the heat exchange flow channel 100 is liquid refrigerant, and converting the gaseous refrigerant in the gas-liquid two-phase refrigerant into liquid refrigerant by compression or the like, and mixing the original liquid refrigerant and outputting into the heat exchange flow channel 100, etc., which can all purify the gas-liquid two-phase refrigerant and output into the heat exchange flow channel 100. Herein, no specific limitation is made.

[0036] For example, when the specific principle of purifying the gas-liquid two-phase refrigerant by the purification unit 200 is the mode of separating the gas-liquid two-phase refrigerant and separately transporting the liquid refrigerant into the heat exchange flow channel 100, the purification unit 200 can adopt a gas-liquid separator, a flash tank or the like to separate.

[0037] In the embodiment, the purification unit 200 includes a purification tank body 210 and a purification structure. The first inlet 201 of the purification tank body 210 is communicated with the refrigerant inlet pipe 300, the liquid outlet 202 of the purification tank body 210 is communicated with the second inlet of the heat exchange flow channel 100, and the purification structure is arranged in the purification tank body 210. The purification structure is used for purifying the gas-liquid two-phase refrigerant and outputting the purified liquid refrigerant through the liquid outlet 202 of the purification tank body 210. Through the arrangement of the purification tank body 210 and the purification structure, the purification of the gas-liquid two-phase refrigerant and the output of the liquid refrigerant into the heat exchange flow channel 100 are realized.

[0038] Specifically, the liquid outlet 202 of the purification tank 210 is sealingly communicated with a liquid outlet pipe 220, and the liquid outlet pipe 220 is communicated with the second inlet of the heat exchange flow channel 100, that is, the communication between the liquid outlet 202 of the purification tank 210 and the second inlet of the heat exchange flow channel 100 is realized.

[0039] Optionally, the liquid outlet 202 of the purification unit 200 is provided with a plurality of liquid outlets 202, and the liquid outlets 202 of the plurality of purification units 200 are all communicated with the second inlet of the heat exchange flow channel 100. The plurality of liquid outlets 202 can increase the flow of the output liquid coolant, and can also reasonably distribute the flow channels in the heat exchange flow channel 100.

[0040] Of course, since the purification unit 200 in the embodiment adopts a gas-liquid separation mode for purification, the purification unit 200 further comprises a gas outlet 203 for flowing out the purified gaseous coolant. Further, the gas outlet 203 is communicated with the coolant return pipe 400, and the outlet of the heat exchange flow channel 100 is communicated with the coolant return pipe 400, that is, the liquid coolant entering the heat exchange flow channel 100 is circulated after completing heat exchange in the heat exchange flow channel 100, and flows out to the coolant return pipe 400 through the outlet for the next round of recycling; at the same time, the gaseous coolant separated in the purification unit 200 also flows to the coolant return pipe 400 through the gas outlet 203, so that the gaseous and liquid coolants are reunited to form a gas-liquid two-phase coolant, avoiding waste and improving resource utilization.

[0041] Optionally, the gas outlet 203 is provided with at least one gas outlet, that is, it can be adaptively designed according to the actual demand of the purification unit 200. For example, when the purification unit 200 is internally layered, a plurality of gas outlets 203 can be correspondingly provided.

[0042] More specifically, the purification unit 200 further comprises a gas outlet pipe 230 connected to the gas outlet 203 and the coolant return pipe 400, that is, the communication between the gas outlet 203 and the coolant return pipe 400 is realized.

[0043] More specifically, the first inlet 201, the liquid outlet 202 and the gas outlet 203 are all provided on the cavity wall of the purification tank 210, and their positions are different, the gas outlet 203 is higher than the first inlet 201, so that after the gaseous coolant and the liquid coolant are separated in the purification unit 200, the gaseous coolant rises and flows out through the gas outlet 203.

[0044] Optionally, the first inlet 201 and the gas outlet 203 are provided on the same side to realize the external communication of the first inlet 201 and the gas outlet 203. The liquid outlet 202 is provided at the joint with the heat exchange flow channel 100 to realize the communication between the two.

[0045] Of course, the arrangement position of the purification unit 200 can also be set according to the actual requirement structure of the heat exchange flow channel 100, and the purification unit 200 can be arranged at any position of the heat exchange body, which is not limited herein.

[0046] In an optional embodiment, the heat exchange flow channel 100 is provided with a recessed space, and the purification unit 200 is arranged in the recessed space. Of course, the recessed space can be arranged at any side of the side edge or at the middle of the side edge, and the purification unit 200 can be arranged in this way, which not only improves the space utilization, but also increases the heat exchange space of the heat exchange flow channel 100.

[0047] In an optional embodiment, the heat exchange flow channel 100 and the purification unit 200 are arranged side by side, that is, the purification unit 200 can be arranged at any side of the heat exchange flow channel 100, that is, the heat exchange flow channel 100 and the purification unit 200 can be arranged side by side or arranged in a vertical manner, which is more convenient for arrangement and improves the adaptability of the heat exchange device with the embedded purification unit.

[0048] In the embodiment, the heat exchange flow channel 100 is at least one group of flat tube flow channel groups, and an air passage is formed between each flat tube in each group of flat tube flow channel groups to achieve heat exchange between air and refrigerant. Of course, the heat exchange flow channel 100 can be single-flow or multi-flow. It should be noted that the specific structure of the heat exchange flow channel 100 of the heat exchanger body can be set according to the existing heat exchanger, which is not described herein.

[0049] Of course, the heat exchange flow channel 100 also includes other structures, which can be selected from common heat exchange flow channel structures, which are not described herein.

[0050] Optionally, the heat exchanger body is any one of a plate heat exchanger, a tube heat exchanger, and a fin heat exchanger. That is, the heat exchanger body can be any heat exchanger that uses refrigerant as the heat exchange medium, which can meet the use of the heat exchange device with the embedded purification unit in the embodiment, that is, the heat exchange flow channel 100 and the purification unit 200 can be used together.

[0051] Optionally, the heat exchanger body is a non-phase-change heat exchanger, that is, only the sensible heat exchange of the refrigerant in the heat exchange flow channel 100 is considered in the heat exchange process, and only the temperature difference between the air side and the refrigerant side is used as the first driving force for heat transfer. In other words, the liquid refrigerant inside the heat exchanger body will not change into gas during the flow process, which ensures that the heat exchange in the heat exchange flow channel 100 is more uniform, and the temperature difference of the air outlet of the heat exchanger is smaller. In addition, the non-phase-change heat exchanger has fast heat transfer speed and large heat load capacity.

[0052] Optionally, the heat exchanger body further includes a purification cavity 101, and the purification unit 200 is arranged in the purification cavity 101, which can ensure the integrity of the heat exchanger body.

[0053] The embodiment also provides an air conditioning system comprising the heat exchange device with the built-in purification unit according to any of the above solutions. By using the heat exchange device with the built-in purification unit, the heat exchange effect and efficiency of the air conditioning system are improved. Of course, the air conditioning system has all the beneficial effects of the heat exchange device with the built-in purification unit described above, which will not be repeated here.

[0054] It can be understood that the air conditioning system includes various types of air conditioning systems such as centralized air conditioning systems, semi-centralized air conditioning systems, decentralized air conditioning systems, vehicle-mounted air conditioning systems, air conditioning heat pump systems, etc., which are not specifically limited here.

[0055] Obviously, the above embodiments of the present application are only examples for clear illustration of the present application, and are not a limitation on the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the scope of the present application. It is unnecessary and impossible to enumerate all the embodiments here. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A heat exchange device with a built-in purification unit, characterized in that: include: A heat exchanger body, the heat exchanger body comprising a heat exchange channel (100), wherein a refrigerant flows in the heat exchange channel (100) for exchanging heat with air; A purification unit (200) is embedded in the heat exchanger body, and a first inlet (201) of the purification unit (200) is connected to a refrigerant inlet pipe (300) to allow a gas-liquid two-phase refrigerant to enter; a liquid outlet (202) of the purification unit (200) is connected to a second inlet of the heat exchange channel (100), and the purification unit (200) is used to purify the gas-liquid two-phase refrigerant and output the liquid refrigerant to the second inlet of the heat exchange channel (100), so that the refrigerant flowing in the heat exchange channel (100) is all liquid refrigerant.

2. The heat exchange device with a built-in purification unit according to claim 1, characterized in that: The purification unit (200) includes a purification tank body (210) and a purification structure. The first inlet (201) of the purification tank body (210) is connected to the refrigerant inlet pipe (300), and the liquid outlet (202) of the purification tank body (210) is connected to the second inlet of the heat exchange channel (100). The purification structure is arranged in the purification tank body (210). The purification structure is used to purify the gas-liquid two-phase refrigerant and output the purified liquid refrigerant through the liquid outlet (202) of the purification tank body (210).

3. The heat exchange device with a built-in purification unit according to claim 2, characterized in that: The liquid outlet (202) of the purification tank (210) is sealed and connected to a liquid outlet pipe (220), and the liquid outlet pipe (220) is connected to the second inlet of the heat exchange channel (100).

4. The heat exchange device with a built-in purification unit according to claim 1, characterized in that: The purification unit (200) is provided with a plurality of liquid outlets (202), and the plurality of liquid outlets (202) of the purification unit (200) are all connected to the second inlet of the heat exchange channel (100).

5. The heat exchange device with a built-in purification unit according to claim 1, characterized in that: The purification unit (200) further includes an air outlet (203), which is used to discharge the purified gaseous refrigerant. The air outlet (203) is connected to the refrigerant return pipe (400), and the outlet of the heat exchange channel (100) is connected to the refrigerant return pipe (400).

6. The heat exchange device with a built-in purification unit according to claim 5, characterized in that: At least one air outlet (203) is provided.

7. The heat exchange device with a built-in purification unit according to claim 5, characterized in that: The purification unit (200) further includes an air outlet pipe (230), wherein the air outlet pipe (230) is connected to the air outlet (203) and the refrigerant return pipe (400).

8. The heat exchange device with a built-in purification unit according to claim 1, characterized in that: The heat exchanger body further comprises a purification chamber (101), and the purification unit (200) is arranged in the purification chamber (101).

9. The heat exchange device of the built-in purification unit according to any one of claims 1 to 8, characterized in that: The heat exchanger body is a heat exchanger without phase change.

10. Air conditioning system, characterized in that A heat exchange device comprising the inline purification unit according to any one of claims 1 to 9.

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