Liquid storage element and heat exchanger

Abstract

The present application relates to the technical field of air conditioners, and discloses a liquid storage element including a liquid storage housing, a first refrigerant inlet / outlet pipe, and a second refrigerant inlet / outlet pipe. The liquid storage housing defines a liquid storage cavity. The first refrigerant inlet / outlet pipe is horizontally disposed in the liquid storage housing. The second refrigerant inlet / outlet pipe is horizontally disposed in the liquid storage housing, so that the refrigerant flowing in through the first refrigerant inlet / outlet pipe is partially stored in the liquid storage cavity and then flows out through the second refrigerant inlet / outlet pipe. Wherein, a baffle is disposed at a position corresponding to the first refrigerant port of the first refrigerant inlet / outlet pipe inside the liquid storage cavity, so that the refrigerant flowing out of the first refrigerant port flows towards the baffle. When the refrigerant flows into the liquid storage element through the first refrigerant inlet / outlet pipe, it will impact the baffle disposed inside the liquid storage element. Thus, when the refrigerant impacts the baffle, the baffle can play a buffering role while guiding the refrigerant, so as to reduce the noise generated during the liquid storage process of the liquid storage element. The present application also discloses a heat exchanger at the same time.

Description

Technical Field

[0001] This application relates to the technical field of air conditioners, for example, to a liquid storage element and a heat exchanger. Background Art

[0002] Under different outdoor ambient temperature conditions, the required heat exchange capacity and the corresponding refrigerant flow rate of an air conditioner are different. After the refrigerant in the existing air conditioner refrigerant circulation system is filled, the flow rate of the refrigerant circulation is completely determined, and the heat exchanger does not have the ability to adjust the refrigerant circulation volume according to the outdoor ambient temperature, resulting in the compressor still maintaining a high operating frequency under low load conditions, leading to energy loss in the air conditioning system.

[0003] In the prior art, a method of setting a liquid storage tank on the heat exchanger is used to adjust the amount of refrigerant participating in the circulation in the heat exchanger, so that the refrigerant circulation volume of the heat exchanger adapts to the current operating load.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] The liquid storage tank provided on the heat exchanger generates noise during the liquid storage process, reducing the user experience. Summary of the Invention

[0006] To have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. The summary is not a general review, nor is it intended to identify key / important constituent elements or delineate the protection scope of these embodiments, but rather serves as a preamble to the subsequent detailed description.

[0007] The embodiments of the present disclosure provide a liquid storage element and a heat exchanger to solve the noise problem generated by the liquid storage tank provided on the heat exchanger during the liquid storage process.

[0008] The embodiments of the present disclosure provide a liquid storage element including a liquid storage housing, a first refrigerant inlet / outlet pipe, and a second refrigerant inlet / outlet pipe. The liquid storage housing defines a liquid storage cavity. The first refrigerant inlet / outlet pipe is horizontally disposed on the liquid storage housing. The second refrigerant inlet / outlet pipe is horizontally disposed on the liquid storage housing, so that the refrigerant flowing into the liquid storage cavity through the first refrigerant inlet / outlet pipe is partially stored in the liquid storage cavity and then flows out through the second refrigerant inlet / outlet pipe. Wherein, a baffle is disposed at a position corresponding to the first refrigerant port of the first refrigerant inlet / outlet pipe inside the liquid storage cavity, so that the refrigerant flowing out of the first refrigerant port flows towards the baffle.

[0009] Optionally, the baffle includes an impact plate section and a diversion plate section. The refrigerant flowing out of the first refrigerant port directly flows towards the impact plate section. The diversion plate section is connected to the impact plate section to divert the liquid refrigerant on the impact plate section. Wherein, the impact plate section is a concave arc-shaped plate.

[0010] Optionally, the first refrigerant inlet / outlet pipe includes a first connecting pipe section and a refrigerant outflow pipe section. The first connecting pipe section is horizontally arranged in the liquid storage housing. The refrigerant outflow pipe section is provided with a first refrigerant port and is connected to the first connecting pipe section by a downward bend.

[0011] Optionally, the distance from the first refrigerant port to the impact plate section is less than or equal to a preset distance.

[0012] Optionally, the second refrigerant inlet / outlet pipe is arranged below the first refrigerant inlet / outlet pipe.

[0013] Optionally, the second refrigerant inlet / outlet pipe includes a second connecting pipe section. The second connecting pipe section is horizontally arranged in the liquid storage housing. Among them, the extending length of the first connecting pipe section in the liquid storage cavity is greater than or equal to the extending length of the second connecting pipe section in the liquid storage cavity.

[0014] Optionally, the second refrigerant port of the second connecting pipe section is located at the corresponding position of the impact plate section.

[0015] Optionally, the liquid storage element further includes a third refrigerant inlet / outlet pipe and a solenoid valve. The third refrigerant inlet / outlet pipe is arranged at the bottom of the liquid storage housing. The solenoid valve is arranged on the third refrigerant inlet / outlet pipe.

[0016] An embodiment of the present disclosure provides a heat exchanger, including a heat exchanger body and a liquid storage element arranged on the heat exchanger body. Among them, the liquid storage element is as described above.

[0017] Optionally, the heat exchanger body includes a heat exchange pipe and a subcooling pipe. Among them, the liquid storage element is arranged between different heat exchange pipes, or the liquid storage element is arranged between the heat exchange pipe and the subcooling pipe.

[0018] Optionally, the heat exchange pipe includes a first main pipe, a first heat exchange branch, a second heat exchange branch, a third heat exchange branch, a first bypass pipeline, a second bypass pipeline, and a second main pipe. The first heat exchange branch is communicated with the first main pipe, and one end of the first heat exchange branch is communicated with a first flow dividing element, and the other end is communicated with a second flow dividing element. One end of the second heat exchange branch is communicated with a third flow dividing element, and the other end is communicated with the second flow dividing element. One end of the third heat exchange branch is communicated with the third flow dividing element, and the other end is communicated with a fourth flow dividing element. The first bypass pipeline communicates the first flow dividing element and the third flow dividing element, and a first valve body element is arranged on the first bypass pipeline. The second bypass pipeline communicates the second flow dividing element and the fourth flow dividing element, and a second valve body element is arranged on the second bypass pipeline. The second main pipe is communicated with the subcooling pipe, and a fifth flow dividing element is arranged on the second main pipe. Among them, the first refrigerant inlet / outlet pipe of the liquid storage element is communicated with the fourth flow dividing element, the second refrigerant inlet / outlet pipe of the liquid storage element is communicated with the subcooling pipe, and the third refrigerant inlet / outlet pipe of the liquid storage element is communicated with the fifth flow dividing element.

[0019] The liquid storage element and the heat exchanger provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] In the liquid storage element provided by the embodiment of the present disclosure, refrigerant flows into the liquid storage cavity from the first refrigerant inlet and outlet pipe. The liquid storage element stores part of the refrigerant and allows the remaining refrigerant to flow out from the second refrigerant inlet and outlet pipe. At the same time, a baffle is provided at the position corresponding to the first refrigerant port in the liquid storage element. When the refrigerant flows into the liquid storage element through the first refrigerant inlet and outlet pipe, it will impact the baffle arranged inside the liquid storage element. In this way, after the refrigerant impacts the baffle, the baffle can play a buffering role while guiding the flow of the refrigerant, reducing the noise generated during the liquid storage process of the liquid storage element.

[0021] The above general description and the following description are only exemplary and explanatory, and are not used to limit this application. Description of the Drawings

[0022] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and among them:

[0023] Figure 1 is a schematic structural diagram of a liquid storage element provided by the embodiment of the present disclosure;

[0024] Figure 2 is a schematic structural diagram of another liquid storage element provided by the embodiment of the present disclosure;

[0025] Figure 3 is a schematic diagram of the flow direction of the refrigerant in a liquid storage element provided by the embodiment of the present disclosure;

[0026] Figure 4 is a schematic diagram of the flow direction of the refrigerant in another liquid storage element provided by the embodiment of the present disclosure;

[0027] Figure 5 is a schematic diagram of the flow direction of the refrigerant in another liquid storage element provided by the embodiment of the present disclosure;

[0028] Figure 6 is a schematic structural diagram of a heat exchanger provided by the embodiment of the present disclosure;

[0029] Figure 7 is a schematic structural diagram of another heat exchanger provided by the embodiment of the present disclosure.

[0030] Reference Numerals:

[0031] 1: Liquid storage element; 101: First refrigerant inlet / outlet pipe; 1011: First connecting pipe section; 1012: Refrigerant outflow pipe section; 102: Second refrigerant inlet / outlet pipe; 1021: Second connecting pipe section; 103: Third refrigerant inlet / outlet pipe; 104: Baffle; 1041: Impact plate section; 1042: Drainage plate section; 105: Solenoid valve; 106: Full liquid line; 201: First shunt element; 202: Second shunt element; 203: Third shunt element; 204: Fourth shunt element; 205: Fifth shunt element; 301: First valve body element; 302: Second valve body element; 401: First heat exchange branch; 402: Second heat exchange branch; 403: Third heat exchange branch; 501: First bypass pipeline; 502: Second bypass pipeline. Detailed implementation manners

[0032] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are only for reference and explanation, and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, multiple details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be shown in a simplified manner to simplify the drawings.

[0033] In the embodiments of the present disclosure, the terms "first", "second", etc. in the description and claims of the embodiments and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0034] In the embodiments of the present disclosure, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and their embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation. And, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0035] In addition, the terms "arranged", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0036] Unless otherwise specified, the term "plurality" means two or more.

[0037] It should be noted that, without conflict, the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0038] Generally, an air conditioner includes an indoor heat exchanger, an outdoor heat exchanger, a throttling device, and a compressor. The indoor heat exchanger, the outdoor heat exchanger, the throttling device, and the compressor are connected by refrigerant pipelines to form a refrigerant circulation loop. The refrigerant flows through the refrigerant circulation loop along the flow directions set by different operating modes to achieve different operating modes such as a refrigeration mode and a heating mode.

[0039] The embodiment of the present disclosure provides a liquid storage element 1. By means of a baffle 104 arranged in the liquid storage element 1, the flowing-in refrigerant is diverted and the noise generated by the liquid storage element 1 during the liquid storage process is reduced.

[0040] As Figure 1 and Figure 2 shown, the embodiment of the present disclosure provides a liquid storage element 1 including a liquid storage housing, a first refrigerant inlet / outlet pipe 101, and a second refrigerant inlet / outlet pipe 102. The liquid storage housing encloses a liquid storage cavity. The first refrigerant inlet / outlet pipe 101 is horizontally arranged on the liquid storage housing. The second refrigerant inlet / outlet pipe 102 is horizontally arranged on the liquid storage housing, so that the refrigerant flowing in through the first refrigerant inlet / outlet pipe 101 is partially stored in the liquid storage cavity and then flows out through the second refrigerant inlet / outlet pipe 102. Among them, a baffle 104 is arranged at a position corresponding to the first refrigerant port of the first refrigerant inlet / outlet pipe 101 inside the liquid storage cavity, so that the refrigerant flowing out of the first refrigerant port flows towards the baffle 104.

[0041] When the air conditioner is in the cooling mode, including different cooling operation modes such as rated cooling, intermediate cooling, and low-temperature intermediate cooling, the loads of these different cooling operation modes are different, and the optimal refrigerant amount in the refrigerant circulation flow path is also different. The embodiment of the present disclosure provides a liquid storage element 1, which can partially store the refrigerant in the heat exchanger to adjust the refrigerant amount flowing through the heat exchanger or the refrigerant circulation loop, so that the refrigerant amount in the heat exchanger or the refrigerant circulation loop conforms to the current operation mode of the air conditioner, improving the operation ability of the air conditioner under different operation loads and being beneficial to the Annual Performance Factor (APF) of the air conditioner.

[0042] Specifically, when the above-mentioned liquid storage element 1 is arranged in the outdoor heat exchanger and is in the cooling mode. The refrigerant flows into the liquid storage cavity surrounded by the liquid storage shell from the first refrigerant inlet and outlet pipe 101 and impacts the baffle 104 arranged at the corresponding position of the first refrigerant port. After the liquid storage element 1 partially stores the refrigerant in the liquid storage cavity, the refrigerant flows out through the second refrigerant inlet and outlet pipe 102.

[0043] Regarding the statement that "after the liquid storage element 1 partially stores the refrigerant in the liquid storage cavity, the refrigerant flows out through the second refrigerant inlet and outlet pipe 102", the "partial storage" here can be understood as partially storing the liquid refrigerant flowing in from the first refrigerant inlet and outlet pipe 101. For example, when there are both gaseous refrigerant and liquid refrigerant in the heat exchanger, the gaseous refrigerant and the liquid refrigerant flow into the liquid storage cavity of the liquid storage element 1 through the first refrigerant inlet and outlet pipe 101. At this time, the baffle 104 diverts the incoming refrigerant so that the gaseous refrigerant flows out of the liquid storage element 1 through the second refrigerant inlet and outlet pipe 102 of the liquid storage element 1 to flow into the heat exchanger to participate in heat exchange, while the liquid refrigerant flows into the liquid storage cavity for storage. When the liquid refrigerant in the liquid storage cavity of the liquid storage element 1 reaches above the full liquid line 106, the liquid refrigerant will also flow out of the liquid storage element 1 through the second refrigerant inlet and outlet pipe 102 to enter the heat exchanger to participate in heat exchange. At the same time, the liquid refrigerant below the full liquid line 106 in the liquid storage cavity of the liquid storage element 1 will be stored in the liquid storage cavity and cannot flow out of the liquid storage element 1 through the second refrigerant inlet and outlet pipe 102 to participate in heat exchange.

[0044] Optionally, the shape of the liquid storage element 1 can be barrel-shaped.

[0045] When the outdoor ambient temperature is relatively low, the air conditioner can meet the user's temperature requirements without exerting its maximum cooling capacity. For example, the intermediate cooling mode or the low-temperature intermediate cooling mode of the air conditioner. The liquid storage element 1 provided by the embodiment of the present disclosure can adjust the refrigerant amount flowing through the heat exchanger, adjust the refrigerant amount flowing into the refrigerant circulation system, and further enable the refrigerant entering the evaporator through the throttling device to fully exchange heat in the evaporator, improving the operation energy efficiency ratio of the air conditioner.

[0046] Optionally, the baffle 104 includes an impact plate section 1041 and a drainage plate section 1042. The refrigerant flowing out of the first refrigerant port directly flows towards the impact plate section 1041. The drainage plate section 1042 is connected to the impact plate section 1041 to drain the liquid refrigerant of the impact plate section 1041. Among them, the impact plate section 1041 is a concave arc-shaped plate.

[0047] Specifically, when the above-mentioned liquid storage element 1 is disposed in an outdoor heat exchanger and is in a refrigeration condition, as Figure 3 shown, the refrigerant flows into the liquid storage cavity from the first refrigerant inlet and outlet pipe 101. After impacting the impact plate section 1041 of the baffle 104, the gaseous refrigerant flows out of the liquid storage cavity through the second refrigerant inlet and outlet pipe 102, and the liquid refrigerant flows into the liquid storage cavity for storage after being drained by the drainage plate section 1042 of the baffle 104. At the same time, since the impact plate section 1041 is a concave arc-shaped plate, when the gas-liquid mixed refrigerant impacts the baffle 104, the arc-shaped impact plate section 1041 can drain the liquid refrigerant, which is beneficial to the separation of the gaseous refrigerant and the liquid refrigerant, so that the gaseous refrigerant flows out through the second refrigerant inlet and outlet pipe 102.

[0048] It can be understood that when the refrigerant flows in from the first refrigerant inlet and outlet, the pressure of the refrigerant itself will cause the refrigerant to have a certain initial velocity when flowing into the liquid storage cavity. At this time, if the refrigerant directly flows into the liquid storage cavity, a turbulent flow phenomenon will occur, and thus noise will be generated.

[0049] In the embodiment of the present disclosure, due to the buffering effect of the impact plate section 1041 and the drainage plate section 1042 of the baffle 104 on the flowing-in refrigerant, the noise generated when the refrigerant flows into the liquid storage cavity can be reduced. At the same time, setting the impact plate section 1041 as a concave arc-shaped plate is more beneficial to buffering the flowing-in refrigerant, and is beneficial to the separation of the gaseous refrigerant and the liquid refrigerant, so that the gaseous refrigerant flows out of the liquid storage cavity through the second refrigerant inlet and outlet pipe 102.

[0050] Optionally, the first refrigerant inlet and outlet pipe 101 includes a first communication pipe section 1011 and a refrigerant outflow pipe section 1012. The first communication pipe section 1011 is horizontally disposed in the liquid storage housing. The refrigerant outflow pipe section 1012 is provided with a first refrigerant port and is bent downward and connected to the first communication pipe section 1011, as Figure 1 and Figure 2 shown.

[0051] Specifically, the bent connection part of the first communication pipe section 1011 and the refrigerant outflow pipe section 1012 is located in the liquid storage cavity. After the refrigerant flows into the first communication pipe section 1011 of the first refrigerant inlet and outlet pipe 101, it then flows into the liquid storage cavity through the first refrigerant port of the refrigerant outflow pipe section 1012 and impacts the baffle 104. The arc-shaped impact plate section 1041 can buffer the refrigerant flowing into the liquid storage cavity, thereby reducing the noise of the refrigerant flowing into the liquid storage cavity.

[0052] It can be understood that by setting the refrigerant outflow pipe section 1012 to be bent downward, the angle between the refrigerant outflow pipe section 1012 and the impact plate section 1041 can be reduced. In this way, when the refrigerant passes through the refrigerant outflow pipe section 1012 and impacts the impact plate section 1041 of the baffle 104, the angle at which the refrigerant impacts the baffle 104 is reduced, so as to improve the buffering effect of the baffle 104, and further reduce the noise generated during the liquid storage process of the liquid storage element 1.

[0053] The first refrigerant inlet / outlet pipe 101 is horizontally arranged in the liquid storage housing. And under the condition that the arc-shaped baffle 104 is not arranged in the liquid storage cavity, the included angle between the refrigerant outflow pipe and the liquid storage housing is defined as 90°. Under this condition, when the refrigerant directly flows into the liquid storage cavity, a turbulent flow phenomenon will occur, and thus noise will be generated. The refrigerant outflow pipe section 1012 is bent downward, and the impact plate section 1041 is a concave arc-shaped plate. The angle between the refrigerant outflow pipe section 1012 and the impact plate section 1041 can be greatly reduced, and the angle between the two can be 15 - 45°. Further, the angle between the two can be 15 - 30°, as Figures 1 to 4 shown in the figure. In this way, the noise generated during the liquid storage process of the liquid storage element 1 is greatly reduced.

[0054] In the embodiment of the present disclosure, the angle between the refrigerant outflow pipe section 1012 and the impact plate section 1041 is configured as the first angle a formed by the intersection of the extension line of the refrigerant outflow pipe section 1012 and the tangent line of the impact plate section 1041, as Figure 1 shown in the figure.

[0055] Optionally, the distance from the first refrigerant port to the impact plate section 1041 is less than or equal to a preset distance.

[0056] Specifically, the preset distance is 10 mm. For example, the distance from the first refrigerant port to the impact plate section 1041 can be 8 mm, 6 mm, 4 mm or 2 mm.

[0057] It can be understood that when the first refrigerant inlet / outlet pipe 101 is horizontally arranged in the liquid storage housing, the smaller the angle between the refrigerant outflow pipe section 1012 and the impact plate section 1041, such as 15 - 30°, and the smaller the distance between the first refrigerant port and the impact plate section 1041, the better the guiding effect of the impact plate section 1041 of the baffle 104 on the refrigerant flowing out of the refrigerant outflow pipe section 1012, and thus it is more beneficial to reduce the noise generated during the liquid storage process of the liquid storage element 1.

[0058] Optionally, the second refrigerant inlet / outlet pipe 102 is arranged below the first refrigerant inlet / outlet pipe 101.

[0059] It can be understood that arranging the second refrigerant inlet / outlet pipe 102 below the first refrigerant inlet / outlet pipe 101 is beneficial for the refrigerant to flow into the liquid storage cavity from the first refrigerant inlet / outlet pipe 101 and then flow out from the second refrigerant inlet / outlet pipe 102.

[0060] Optionally, the second refrigerant inlet / outlet pipe 102 includes a second communication pipe section 1021. The second communication pipe section 1021 is horizontally disposed in the liquid storage housing. Among them, the insertion length of the first communication pipe section 1011 in the liquid storage cavity is greater than or equal to the insertion length of the second communication pipe section 1021 in the liquid storage cavity.

[0061] It can be understood that the smaller the distance between the first refrigerant inlet / outlet pipe 101 and the baffle 104, the smaller the noise generated when the refrigerant flows into the first refrigerant inlet / outlet pipe 101. At the same time, when the gaseous refrigerant flows into the liquid storage cavity from the first refrigerant inlet / outlet pipe 101 and impacts the baffle 104, the baffle 104 will exert a reaction force on the gaseous refrigerant so that the gaseous refrigerant moves in the direction of the second refrigerant inlet / outlet pipe 102 after contacting the baffle 104. If the insertion length of the second communication pipe section 1021 into the liquid storage cavity is greater than the insertion length of the first communication pipe section 1011 into the liquid storage cavity, it may cause the gaseous refrigerant to accumulate in the liquid storage cavity after impacting the baffle 104 and unable to flow out smoothly through the second refrigerant inlet / outlet pipe 102. Therefore, the insertion length of the second communication pipe section 1021 into the liquid storage cavity is less than the insertion length of the first communication pipe section 1011 into the liquid storage cavity, which is beneficial to making the gaseous refrigerant flowing into the liquid storage cavity from the first refrigerant inlet / outlet pipe 101 flow out through the second refrigerant inlet / outlet pipe 102.

[0062] Optionally, the second refrigerant port of the second communication pipe section 1021 is located at a corresponding position of the impact plate section 1041.

[0063] Specifically, when the above-mentioned liquid storage element 1 is disposed in an outdoor heat exchanger and is in a heating working condition, as Figure 5 shown, the refrigerant flows into the liquid storage cavity surrounded by the liquid storage housing through the second refrigerant inlet / outlet pipe 102 and impacts the impact plate section 1041 disposed at the corresponding position of the second refrigerant port. After the liquid storage element 1 stores part of the refrigerant in the liquid storage cavity, the refrigerant flows out through the first refrigerant inlet / outlet pipe 101.

[0064] Optionally, the first refrigerant inlet / outlet pipe 101 and the second refrigerant inlet / outlet pipe 102 adopt the same structural design. For example, the pipe diameters, wall thicknesses, and materials of the first refrigerant inlet / outlet pipe 101 and the second refrigerant inlet / outlet pipe 102 are the same, etc., so that the refrigerant flowing into the liquid storage element 1 from the first refrigerant inlet / outlet pipe 101 and flowing out of the liquid storage element 1 through the second refrigerant inlet / outlet pipe 102 flows more uniformly, avoiding the situation where the refrigerant pressure and flow rate are unstable due to changes in the pipeline structure.

[0065] Optionally, the liquid storage element 1 further includes a third refrigerant inlet / outlet pipe 103 and a solenoid valve 105. The third refrigerant inlet / outlet pipe 103 is disposed at the bottom of the liquid storage housing. The solenoid valve 105 is disposed on the third refrigerant inlet / outlet pipe 103.

[0066] Among them, the solenoid valve 105 can block or conduct the third refrigerant inlet / outlet pipe 103.

[0067] It can be understood that when the above-mentioned liquid storage element 1 is arranged in the outdoor heat exchanger and under the refrigeration condition, the higher the ambient temperature, the higher the load of the air conditioner, and more refrigerant is required for the heat exchanger to participate in heat exchange.

[0068] Specifically, when the above-mentioned liquid storage element 1 is arranged in the outdoor heat exchanger and under the refrigeration condition, if the ambient temperature is low, that is, the air conditioner load is low, the electromagnetic valve 105 blocks the third refrigerant inlet and outlet pipe 103. The refrigerant flows into the liquid storage cavity from the first refrigerant inlet and outlet pipe 101 and impacts the impact plate section 1041 of the baffle 104. After the refrigerant flowing into the liquid storage cavity impacts the baffle 104, the gaseous refrigerant and the liquid refrigerant are separated. The diversion plate section 1042 diverts the liquid refrigerant to the bottom of the liquid storage cavity. After the liquid storage element 1 stores the liquid refrigerant in the liquid storage cavity, the gaseous refrigerant flows out through the second refrigerant inlet and outlet pipe 102. When the ambient temperature is high, that is, the air conditioner load is high, the electromagnetic valve 105 conducts the third refrigerant inlet and outlet pipe 103. The refrigerant flows into the liquid storage cavity from the first refrigerant inlet and outlet pipe 101 and impacts the impact plate section 1041 of the baffle 104. The gaseous refrigerant and the liquid refrigerant are separated. The gaseous refrigerant flows out of the liquid storage element 1 through the second refrigerant inlet and outlet pipe 102 to participate in heat exchange, and the liquid refrigerant is diverted by the diversion plate section 1042 to the bottom of the liquid storage cavity and flows out of the liquid storage element 1 through the third refrigerant inlet and outlet pipe 103 to participate in heat exchange, as Figure 4 shown. At this time, the gaseous refrigerant and the liquid refrigerant can flow into the heat exchanger for heat exchange at the same time to ensure the refrigerant flow required when the air conditioner is in a high-load state.

[0069] When the above-mentioned liquid storage element 1 is arranged in the outdoor heat exchanger and under the heating condition. The electromagnetic valve 105 blocks the third refrigerant inlet and outlet pipe 103, and the refrigerant flows into the liquid storage cavity surrounded by the liquid storage shell from the second refrigerant inlet and outlet pipe 102 and impacts the impact plate section 1041 arranged at the corresponding position of the second refrigerant port. After the liquid storage element 1 stores part of the refrigerant in the liquid storage cavity, the refrigerant flows out through the first refrigerant inlet and outlet pipe 101.

[0070] The embodiment of the present disclosure provides a heat exchanger, including a heat exchanger body and a liquid storage element 1 arranged on the heat exchanger body. Among them, the liquid storage element 1 is as described above.

[0071] Optionally, the heat exchanger body includes heat exchange tubes and subcooling tubes. Among them, the liquid storage element 1 is arranged between different heat exchange tubes, or the liquid storage element 1 is arranged between the heat exchange tube and the subcooling tube.

[0072] For example, when the liquid storage element 1 is arranged between the heat exchange tube and the subcooling tube, the first refrigerant inlet and outlet pipe 101 is connected to the heat exchange tube, and the second refrigerant inlet and outlet pipe 102 is connected to the subcooling tube.

[0073] Optionally, the heat exchange tube includes a first main pipe, a first heat exchange branch 401, a second heat exchange branch 402, a third heat exchange branch 403, a first bypass pipeline 501, a second bypass pipeline 502, and a second main pipe. The first heat exchange branch 401 is communicated with the first main pipe, one end of the first heat exchange branch 401 is communicated with the first flow dividing element 201, and the other end is communicated with the second flow dividing element 202. One end of the second heat exchange branch 402 is communicated with the third flow dividing element 203, and the other end is communicated with the second flow dividing element 202. One end of the third heat exchange branch 403 is communicated with the third flow dividing element 203, and the other end is communicated with the fourth flow dividing element 204. The first bypass pipeline 501 communicates the first flow dividing element 201 and the third flow dividing element 203, and a first valve body element 301 is arranged on the first bypass pipeline 501. The second bypass pipeline 502 communicates the second flow dividing element 202 and the fourth flow dividing element 204, and a second valve body element 302 is arranged on the second bypass pipeline 502. The second main pipe is communicated with the subcooling pipe, and a fifth flow dividing element 205 is arranged on the second main pipe. Wherein, the first refrigerant inlet and outlet pipe 101 of the liquid storage element 1 is communicated with the fourth flow dividing element 204, the second refrigerant inlet and outlet pipe 102 of the liquid storage element 1 is communicated with the subcooling pipe, and the third refrigerant inlet and outlet pipe 103 of the liquid storage element 1 is communicated with the fifth flow dividing element 205.

[0074] Wherein, the first valve body element 301 is configured as a check valve, and the conduction direction of the first valve body element 301 is defined as flowing from the third flow dividing element 203 to the first flow dividing element 201. Similarly, the second valve body element 302 is configured as a check valve, and the conduction direction of the second valve body element 302 is defined as flowing from the fourth flow dividing element 204 to the second flow dividing element 202.

[0075] Specifically, when the above heat exchanger is used as an outdoor heat exchanger and is in the refrigeration condition, the refrigerant flow direction is from the first shunt element 201 to the fifth shunt element 205. When the refrigerant flow direction is from the first shunt element 201 to the fifth shunt element 205, the first valve body element 301 and the second valve body element 302 respectively block the first bypass pipeline 501 and the second bypass pipeline 502, and the refrigerant flows through the first heat exchange branch 401, the second heat exchange branch 402 and the third heat exchange branch 403 in sequence. At this time, the first heat exchange branch 401, the second heat exchange branch 402 and the third heat exchange branch 403 are in series relationship. When the above heat exchanger is used as an outdoor heat exchanger and is in the heating condition, the refrigerant flow direction is from the fifth shunt element 205 to the first shunt element 201. When the refrigerant flow direction is from the fifth shunt element 205 to the first shunt element 201, the first valve body element 301 and the second valve body element 302 respectively conduct the first bypass pipeline 501 and the second bypass pipeline 502. The refrigerant flows into the first heat exchange branch 401, the second heat exchange branch 402, the third heat exchange branch 403, the first bypass pipeline 501 and the second bypass pipeline 502 simultaneously. At this time, the first heat exchange branch 401, the second heat exchange branch 402 and the third heat exchange branch 403 are in parallel relationship.

[0076] The above description and drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural and other changes. The embodiments only represent possible variations. Unless explicitly required, the individual components and functions are optional, and the order of operations can vary. Some parts and features of some embodiments can be included in or replaced by those of other embodiments. The embodiments of the present disclosure are not limited to the structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A liquid storage element, characterized in that, Comprising: A liquid storage housing, enclosing a liquid storage cavity; A first refrigerant inlet / outlet pipe, horizontally disposed in the liquid storage housing; And, A second refrigerant inlet / outlet pipe, horizontally disposed in the liquid storage housing, such that the refrigerant flowing into the liquid storage cavity through the first refrigerant inlet / outlet pipe is partially stored in the liquid storage cavity and then flows out through the second refrigerant inlet / outlet pipe. Wherein, a baffle is provided at a position corresponding to the first refrigerant port of the first refrigerant inlet / outlet pipe inside the liquid storage cavity, so that the refrigerant flowing out of the first refrigerant port flows towards the baffle. The baffle comprises: An impact plate section, the refrigerant flowing out of the first refrigerant port directly flows towards the impact plate section, and the impact plate section is a concave arc-shaped plate; and, A drainage plate section, connected to the impact plate section to drain the liquid refrigerant on the impact plate section. The first refrigerant inlet / outlet pipe comprises: A first communication pipe section, horizontally disposed in the liquid storage housing; and, A refrigerant outflow pipe section, provided with the first refrigerant port and downwardly bent and connected to the first communication pipe section. The second refrigerant inlet / outlet pipe is disposed below the first refrigerant inlet / outlet pipe, and the second refrigerant inlet / outlet pipe comprises: A second communication pipe section, horizontally disposed in the liquid storage housing, and the extending length of the first communication pipe section in the liquid storage cavity is greater than or equal to the extending length of the second communication pipe section in the liquid storage cavity.

2. The liquid storage element according to claim 1, wherein The distance from the first refrigerant port to the impact plate section is less than or equal to a preset distance.

3. The liquid storage element according to claim 1, wherein The second refrigerant port of the second communication pipe section is located at a position corresponding to the impact plate section.

4. The liquid storage element according to any one of claims 1 to 3, characterized in that, Further comprising: A third refrigerant inlet / outlet pipe, disposed at the bottom of the liquid storage housing; And, An electromagnetic valve, disposed on the third refrigerant inlet / outlet pipe.

5. A heat exchanger, characterized in that, Comprising a heat exchanger body and a liquid storage element disposed on the heat exchanger body, Wherein, the liquid storage element is as described in any one of claims 1 to 4.

6. The heat exchanger according to claim 5, wherein, The heat exchanger body comprises a heat exchange pipe and a subcooling pipe, wherein, The liquid storage element is disposed between different heat exchange pipes; or, The liquid storage element is disposed between the heat exchange pipe and the subcooling pipe.

7. The heat exchanger according to claim 6, characterized in that The heat exchange pipe comprises: A first main pipe; A first heat exchange branch, communicating with the first main pipe, and one end of the first heat exchange branch communicates with a first flow dividing element and the other end communicates with a second flow dividing element; A second heat exchange branch, one end communicating with a third flow dividing element and the other end communicating with the second flow dividing element; A third heat exchange branch, one end communicating with a third flow dividing element and the other end communicating with a fourth flow dividing element; A first bypass pipeline, connecting the first flow dividing element and the third flow dividing element, and a first valve element is disposed on the first bypass pipeline; A second bypass pipeline, connecting the second flow dividing element and the fourth flow dividing element, and a second valve element is disposed on the second bypass pipeline; and, A second main pipe, communicating with the subcooling pipe, and a fifth flow dividing element is disposed on the second main pipe. Wherein, the first refrigerant inlet / outlet pipe of the liquid storage element communicates with the fourth flow dividing element, the second refrigerant inlet / outlet pipe of the liquid storage element communicates with the subcooling pipe, and the third refrigerant inlet / outlet pipe of the liquid storage element communicates with the fifth flow dividing element.

Images