Air conditioner

Abstract

The application relates to the air conditioning technical field, in particular to an air conditioner. The air conditioner comprises a heat exchange pipeline, and the heat exchange pipeline is connected with a compressor, a reversing valve, an indoor heat exchanger, an outdoor heat exchanger and a refrigerant radiator in sequence. The refrigerant radiator is arranged between the indoor heat exchanger and the outdoor heat exchanger, is used for cooling electric control elements, is provided with a heat exchange flow channel in the interior, and the heat exchange flow channel is provided with a first port and a second port. The first port and the second port are both connected with the heat exchange pipeline. The air conditioner further comprises an expansion valve which is connected with the refrigerant radiator in parallel, and a one-way throttling valve core which is arranged at the first port and the second port. The one-way throttling valve core at the first port is matched with the inner wall of the heat exchange flow channel to form a first one-way throttling valve. The one-way throttling valve core at the second port is matched with the inner wall of the heat exchange flow channel to form a second one-way throttling valve. The application can reduce the difficulty of connecting the refrigerant radiator and the one-way throttling valve to the heat exchange pipeline.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and more particularly to an air conditioner. Background Technology

[0002] The outdoor unit of an air conditioner contains an electrical box assembly, which generates significant heat. To ensure the normal operation and reliability of the electrical box assembly, a refrigerant radiator is typically installed on it and connected in series with the air conditioner's heat exchange piping. This refrigerant radiator is positioned between the indoor and outdoor heat exchangers. One-way throttling valves are installed upstream and downstream of the refrigerant radiator to utilize the refrigerant in the heat exchange piping to dissipate heat from the electrical box assembly.

[0003] However, it is quite difficult to connect the refrigerant radiator and the one-way throttle valve in series into the heat exchange pipeline using the current structure. Utility Model Content

[0004] This application discloses an air conditioner that reduces the difficulty of connecting a refrigerant radiator and a one-way throttle valve in series to a heat exchange pipeline.

[0005] To achieve the above objectives, embodiments of this application disclose an air conditioner, comprising: Heat exchange piping, wherein the following are connected in series: compressor; Reversing valve; Indoor heat exchanger; Outdoor heat exchanger; A refrigerant radiator is located between the indoor heat exchanger and the outdoor heat exchanger. The refrigerant radiator is used to cool electronic control components. The refrigerant radiator is provided with a heat exchange channel. The heat exchange channel has a first port and a second port. Both the first port and the second port are connected to the heat exchange pipeline. The air conditioner also includes: An expansion valve is connected in parallel with the refrigerant radiator; A one-way throttle valve core is provided at both the first port and the second port; The one-way throttling valve core at the first port cooperates with the inner wall of the heat exchange channel to form a first one-way throttling valve. The first one-way throttling valve is configured to throttle the refrigerant in the heat exchange channel when it flows from the second port to the first port. The one-way throttling valve core at the second port cooperates with the inner wall of the heat exchange channel to form a second one-way throttling valve. The second one-way throttling valve is configured to throttle the refrigerant in the heat exchange channel when it flows from the first port to the second port.

[0006] In this application, the heat exchange channel within the refrigerant radiator has a first port and a second port. A one-way throttling valve core is provided at both the first and second ports. The one-way throttling valve core at the first port cooperates with the inner wall of the heat exchange channel to form a first one-way throttling valve, and the one-way throttling valve core at the second port cooperates with the inner wall of the heat exchange channel to form a second one-way throttling valve. Therefore, this application utilizes the heat exchange channel of the refrigerant radiator and the one-way throttling valve core to jointly form a one-way throttling valve. This eliminates the need for an additional valve pipe for the one-way throttling valve, thus saving the step of connecting the valve pipe to the heat exchange pipeline. Therefore, with the structure of this application, only the first and second ports of the refrigerant radiator need to be connected to the heat exchange pipeline, thereby reducing the difficulty of connecting the refrigerant radiator and the one-way throttling valve in series to the heat exchange pipeline.

[0007] In one alternative embodiment, the refrigerant radiator includes: The radiator body has multiple first channels and multiple second channels inside it; An end cap is provided at the first end of the radiator body. The end cap and the radiator body cooperate to form a communicating cavity. Each of the first channels is connected to all the second channels through the communicating cavity. A first connecting pipe is located at the second end of the radiator body, and the first connecting pipe is connected to all the first channels; The second connector is located at the second end of the radiator body and is connected to all the second channels. The flow channel in the first connector, the first channel, the second channel, and the flow channel in the second connector cooperate to form the heat exchange flow channel, and the one-way throttling valve core is provided in both the first connector and the second connector.

[0008] In this embodiment, a first channel and a second channel are opened on the radiator body. The end cap is used to form a connecting cavity with the radiator body to connect the first channel and the second channel. A first pipe and a second pipe are provided on the radiator body to form a heat exchange channel. This eliminates the need for the heat dissipation pipe in the previous embodiment, reducing the cost of the refrigerant radiator. Since the heat dissipation pipe is eliminated, the thermally conductive silicone that is added between the heat dissipation pipe and the heat sink to increase the thermal conductivity can also be eliminated, further reducing the cost of the refrigerant radiator.

[0009] In one alternative embodiment, the end cap is connected to the outer peripheral surface of the first end of the radiator body and completely covers the end face of the first end of the radiator body.

[0010] In this embodiment, the end cap is connected to the outer peripheral surface of the first end of the radiator body, and the end cap and the end face of the radiator body cooperate to form a communicating cavity. Therefore, the communicating cavity can cover the entire end face of the radiator body, and the entire end face area of ​​the radiator body can be used to arrange the openings of the first channel and the second channel, thereby allowing more first channels and second channels to be arranged to improve the cooling efficiency of the refrigerant radiator.

[0011] In one alternative embodiment, the end cap includes: Cover plate; A surrounding wall is provided around the edge of the cover plate, and a portion of the surrounding wall is fitted onto the outer peripheral surface of the radiator body. The surrounding wall, the cover plate, and the radiator body cooperate to form the communicating cavity. Along the arrangement direction of the first and second ends of the radiator body, the size of the portion of the enclosure wall that is fitted onto the radiator body is L1, and the total size of the enclosure wall is L2, where L1 < (1 / 2)L2.

[0012] In this embodiment, the size of the part of the enclosure that fits onto the radiator body is L1, and the total size of the enclosure is L2. The depth of the connecting cavity is approximately equal to (L2-L1). Therefore, L1 < (1 / 2)L2, which allows L1 to have a smaller size and the connecting cavity to have a larger depth, thus giving the connecting cavity a larger volume. This better buffers fluid fluctuations and allows the fluid to have more space and time to be evenly distributed to each channel inlet, thereby improving the cooling efficiency of the refrigerant radiator.

[0013] In this embodiment, the inner wall of the first connecting pipe contacts the first side wall and the outer peripheral surface of the radiator body respectively; the inner wall of the second connecting pipe contacts the second side wall and the outer peripheral surface of the radiator body respectively. Therefore, the first connecting pipe and the second connecting pipe can cover a large part of the end face of the radiator body. Most of the end face area can be used to arrange the openings of the first channel and the second channel, thereby allowing more first channels and second channels to be arranged to improve the cooling efficiency of the refrigerant radiator.

[0014] In one optional embodiment, the end face of the second end of the radiator body is provided with a relief groove, the relief groove penetrates the radiator body along the thickness direction of the radiator body, the relief groove is located between the first channel and the second channel, and the relief groove has a first sidewall and a second sidewall disposed opposite to each other. The inner wall of the first connecting pipe is in contact with the first side wall and the outer peripheral surface of the radiator body, respectively; the inner wall of the second connecting pipe is in contact with the second side wall and the outer peripheral surface of the radiator body, respectively.

[0015] In this embodiment, one end of the first connecting pipe forms an inwardly extending first flange portion, which contacts the first sidewall and the outer peripheral surface of the radiator body. Compared with the first connecting pipe without the first flange portion, this embodiment can use a first connecting pipe with a larger cross-sectional area, thereby making the flow area of ​​the first connecting pipe larger, so as to better buffer fluid fluctuations and allow the fluid to have more space and time to be evenly distributed to the inlet of each first channel, thereby improving the cooling efficiency of the refrigerant radiator.

[0016] In one alternative embodiment, one end of the first connecting pipe forms an inwardly extending first flange portion, which contacts the outer peripheral surface of the first sidewall and the radiator body, respectively.

[0017] In this embodiment, one end of the first connecting pipe forms an inwardly extending first flange portion, which contacts the first sidewall and the outer peripheral surface of the radiator body. Compared with the first connecting pipe without the first flange portion, this embodiment can use a first connecting pipe with a larger cross-sectional area, thereby making the flow area of ​​the first connecting pipe larger, so as to better buffer fluid fluctuations and allow the fluid to have more space and time to be evenly distributed to the inlet of each first channel, thereby improving the cooling efficiency of the refrigerant radiator.

[0018] In one alternative embodiment, one end of the second connector forms an inwardly extending second flange portion, which contacts the outer peripheral surface of the second sidewall and the radiator body, respectively.

[0019] In this embodiment, one end of the second connector forms an inwardly extending second flange. The second flange contacts the second sidewall and the outer peripheral surface of the radiator body. Compared with the second connector without a second flange, this embodiment can use a second connector with a larger cross-sectional area, thereby making the flow area of ​​the second connector larger, so as to better buffer fluid fluctuations and allow the fluid to have more space and time to be evenly distributed to the inlet of each second channel, thereby improving the cooling efficiency of the refrigerant radiator.

[0020] In one alternative embodiment, the first control unit includes: The first pipe segment has the first port; The second pipe section is located between the first pipe section and the first channel. The flow area of ​​the second pipe section is larger than that of the first pipe section. The second pipe section is connected to all the first channels.

[0021] Because the one-way throttling valve core has a small external size, in order to adapt to the external size of the one-way throttling valve core, in this embodiment, the flow area of ​​the first pipe section used to install the one-way throttling valve core is designed to be smaller than the flow area of ​​the second pipe section. In this way, the first pipe section can be adapted to the external size of the existing one-way throttling valve core, so that the one-way throttling valve core does not need to be redesigned, thereby reducing the design difficulty of the air conditioner.

[0022] In one alternative embodiment, the second control unit includes: The third pipe section has the second port; The fourth pipe segment is located between the third pipe segment and the second channel. The flow area of ​​the fourth pipe segment is larger than that of the third pipe segment. The fourth pipe segment is connected to all the second channels.

[0023] Because the one-way throttling valve core has a small external size, in order to adapt to the external size of the one-way throttling valve core, in this embodiment, the flow area of ​​the third pipe section used to install the one-way throttling valve core is designed to be smaller than the flow area of ​​the fourth pipe section. In this way, the third pipe section can be adapted to the external size of the existing one-way throttling valve core, so that the one-way throttling valve core does not need to be redesigned, thereby reducing the design difficulty of the air conditioner.

[0024] In one alternative embodiment, the first channel has a circular or elliptical cross-sectional shape, and the second channel has a circular or elliptical cross-sectional shape.

[0025] In this embodiment, compared to rectangular or polygonal cross-sections, circular or elliptical cross-sections have no sharp corners. Sharp corners are natural stress concentration points, and under the influence of internal pressure and external thermal circulation, cracks are easily generated in these areas. Circular and elliptical channels fundamentally avoid this problem, thereby extending the service life of the refrigerant radiator. Furthermore, compared to a circular first channel, an elliptical first channel has a larger perimeter, thus providing a larger heat exchange area and improving the heat exchange efficiency of the refrigerant radiator. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a diagram of the refrigerant system for an air conditioner disclosed in an embodiment of this application; Figure 2 This is a cross-sectional view of the refrigerant radiator disclosed in an embodiment of this application; Figure 3 For this application Figure 2 Enlarged view of point A in the middle; Figure 4 For this application Figure 2 An enlarged schematic diagram of point B.

[0028] Explanation of reference numerals in the attached figures: 100. Heat exchange piping; 210. Compressor; 220. Indoor heat exchanger; 230. Outdoor heat exchanger; 240. Expansion valve; 250. Four-way valve; 300, Refrigerant radiator; 301, Heat exchange channel; 302, First port; 303, Second port; 304, Connecting cavity; 305, First sidewall; 306, Second sidewall; 310. Radiator body; 311. First channel; 312. Second channel; 313. Clearance groove; 320. End cap; 321. Cover plate; 322. Enclosure; 330. First connecting pipe; 331. First flange; 332. First pipe section; 333. Second pipe section; 340. Second connecting pipe; 341. Second flange; 342. Third pipe section; 343. Fourth pipe section; 400. One-way throttle valve core; 510. First one-way throttle valve; 520. Second one-way throttle valve. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0031] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0032] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0033] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0034] The outdoor unit of an air conditioner contains an electrical box assembly, which generates significant heat. To ensure the normal operation and reliability of the electrical box assembly, a refrigerant radiator is typically installed on it and connected in series with the air conditioner's heat exchange piping. This refrigerant radiator is positioned between the indoor and outdoor heat exchangers. One-way throttling valves are installed upstream and downstream of the refrigerant radiator to utilize the refrigerant in the heat exchange piping to dissipate heat from the electrical box assembly.

[0035] The inventors discovered that current one-way throttling valves include a valve tube and a one-way throttling valve core located inside the valve tube. Connecting a refrigerant radiator in series to the heat exchange pipeline requires connecting both ends of the refrigerant radiator to the heat exchange pipeline separately, which requires two connection steps. Similarly, connecting a first one-way throttling valve upstream of the refrigerant radiator in series to the heat exchange pipeline requires connecting both ends of the valve tube of the first one-way throttling valve to the heat exchange pipeline separately, also requiring two connection steps. Connecting a second one-way throttling valve downstream of the refrigerant radiator in series to the heat exchange pipeline also requires connecting both ends of the valve tube of the second one-way throttling valve to the heat exchange pipeline separately, again requiring two connection steps.

[0036] It is evident that using the current structure to connect the refrigerant radiator and the one-way throttle valve in series to the heat exchange pipeline requires at least six connection steps, making installation difficult.

[0037] This application discloses an air conditioner that reduces the difficulty of connecting a refrigerant radiator and a one-way throttling valve in series in a heat exchange pipeline. The air conditioner provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0038] like Figures 1 to 2 As shown in the figure, an embodiment of this application discloses an air conditioner, including: The heat exchange pipeline 100 is connected in series with a compressor 210, a reversing valve, an indoor heat exchanger 220, an outdoor heat exchanger 230, and a refrigerant radiator 300.

[0039] The compressor 210 has an exhaust port and a return port. The reversing valve includes first to fourth interfaces. The first interface is connected to one of the second and third interfaces, and the fourth interface is connected to the other of the second and third interfaces. The first interface is connected to the exhaust port, and the fourth interface is connected to the return port. The first end of the indoor heat exchanger 220 is connected to the second interface, and the first end of the outdoor heat exchanger 230 is connected to the third interface. When the air conditioner is in cooling mode, the first and third interfaces are connected, and the second and fourth interfaces are connected. When the air conditioner is in heating mode, the first and second interfaces are connected, and the third and fourth interfaces are connected.

[0040] In some embodiments, the reversing assembly may be a four-way valve 250. In other embodiments, the reversing assembly includes a plurality of control valves, and reversing is achieved by controlling the on / off state of the plurality of control valves. For example, the reversing assembly includes a first pipe to a fourth pipe, which are connected end to end in sequence. A first solenoid valve is connected in series on the first pipe, a second solenoid valve is connected in series on the second pipe, a third solenoid valve is connected in series on the third pipe, and a fourth solenoid valve is connected in series on the fourth pipe. A first interface is defined at the connection between the first pipe and the second pipe, a third interface is defined at the connection between the first pipe and the fourth pipe, a fourth interface is defined at the connection between the fourth pipe and the third pipe, and a second interface is defined at the connection between the third pipe and the second pipe. The first solenoid valve and the third solenoid valve open or close simultaneously, and the second solenoid valve and the fourth solenoid valve open or close simultaneously.

[0041] The refrigerant radiator 300 is located between the indoor heat exchanger 220 and the outdoor heat exchanger 230. The refrigerant radiator 300 is used to cool the electronic control components. The refrigerant radiator 300 is provided with a heat exchange channel 301. The heat exchange channel 301 has a first port 302 and a second port 303. Both the first port 302 and the second port 303 are connected to the heat exchange pipeline 100.

[0042] Air conditioning also includes: Expansion valve 240, connected in parallel with refrigerant radiator 300, is used to reduce the pressure of refrigerant in heat exchange pipeline 100.

[0043] One-way throttle valve core 400 is provided at both the first port 302 and the second port 303.

[0044] The one-way throttling valve core 400 at the first port 302 cooperates with the inner wall of the heat exchange channel 301 to form a first one-way throttling valve 510. The first one-way throttling valve 510 is configured to throttle the refrigerant in the heat exchange channel 301 when it flows from the second port 303 to the first port 302.

[0045] The one-way throttling valve core 400 at the second port 303 cooperates with the inner wall of the heat exchange channel 301 to form a second one-way throttling valve 520. The second one-way throttling valve 520 is configured to throttle the refrigerant in the heat exchange channel 301 when it flows from the first port 302 to the second port 303.

[0046] In this application, in the cooling mode, the refrigerant passes through the compressor 210, the reversing valve and the outdoor heat exchanger 230 in sequence, and then splits into two paths. One path flows through the expansion valve 240, and after flowing out of the expansion valve 240, it flows through the indoor heat exchanger 220, thereby realizing the circulation of the air conditioner refrigerant. Another flow path passes through the heat exchange channel 301 of the refrigerant radiator 300, and sequentially flows through the one-way throttling valve core 400 at the first port 302 and the one-way throttling valve core 400 at the second port 303. The first one-way throttling valve 510 formed at the first port 302 does not throttle the refrigerant, while the second one-way throttling valve 520 formed at the second port 303 throttles the refrigerant. Because the refrigerant flowing into the heat exchange channel 301 is not throttled by the expansion valve 240 and the first one-way throttling valve 510, the temperature of the refrigerant in the heat exchange channel 301 is higher than the ambient temperature. Therefore, when cooling the electrical box assembly, condensation will not occur on the surface of the electrical box assembly, thereby improving the safety of the electrical box assembly.

[0047] In this application, in the cooling mode, the refrigerant passes through the compressor 210, the reversing valve and the indoor heat exchanger 220 in sequence, and then splits into two paths. One path flows through the expansion valve 240, and after flowing out of the expansion valve 240, it flows through the outdoor heat exchanger 230, thereby realizing the circulation of the air conditioner refrigerant. Another flow path passes through the heat exchange channel 301 of the refrigerant radiator 300, and sequentially flows through the one-way throttling valve core 400 at the second port 303 and the one-way throttling valve core 400 at the first port 302. The second one-way throttling valve 520 formed at the second port 303 does not throttle the refrigerant, while the first one-way throttling valve 510 formed at the first port 302 throttles the refrigerant. Because the refrigerant flowing into the heat exchange channel 301 is not throttled by the expansion valve 240 and the second one-way throttling valve 520, the temperature of the refrigerant in the heat exchange channel 301 is higher than the ambient temperature. Therefore, when cooling the electrical box assembly, condensation will not occur on the surface of the electrical box assembly, thereby improving the safety of the electrical box assembly.

[0048] In this application, the heat exchange channel 301 inside the refrigerant radiator 300 has a first port 302 and a second port 303. A one-way throttling valve core 400 is provided at both the first port 302 and the second port 303 of the heat exchange channel 301. The one-way throttling valve core 400 at the first port 302 and the inner wall of the heat exchange channel 301 cooperate to form a first one-way throttling valve 510. The one-way throttling valve core 400 at the second port 303 and the inner wall of the heat exchange channel 301 cooperate to form a second one-way throttling valve 520. As can be seen, this application utilizes the heat exchange channel 301 of the refrigerant radiator 300 and the one-way throttling valve core 400 to jointly form a one-way throttling valve. This eliminates the need for additional valve pipes for the one-way throttling valve, thereby saving the process of connecting the valve pipes to the heat exchange pipeline 100. Therefore, with the structure of this application, it is only necessary to connect the first port 302 and the second port 303 of the refrigerant radiator 300 to the heat exchange pipeline 100, thereby reducing the difficulty of connecting the refrigerant radiator 300 and the one-way throttling valve in series to the heat exchange pipeline 100.

[0049] In some embodiments, the refrigerant radiator 300 may include a heat sink plate and heat pipes, the heat sink plate having a groove, at least a portion of the heat pipes being located within the grooves, and the flow channels within the heat pipes being heat exchange channels 301.

[0050] Please see Figure 2 In one alternative embodiment, the refrigerant radiator 300 includes: The radiator body 310 has multiple first channels 311 and multiple second channels 312 inside. The radiator body 310 can be plate-shaped, and both the first channels 311 and the second channels 312 can penetrate the radiator body 310 along its length.

[0051] An end cap 320 is provided at the first end of the radiator body 310. The end cap 320 and the radiator body 310 cooperate to form a connecting cavity 304. Each first channel 311 is connected to all the second channels 312 through the connecting cavity 304.

[0052] The first connecting pipe 330 is located at the second end of the radiator body 310, and the first connecting pipe 330 is connected to all the first channels 311.

[0053] The second connector 340 is located at the second end of the radiator body 310 and is connected to all the second channels 312.

[0054] The flow channels in the first connector 330, the first channel 311, the second channel 312, and the flow channels in the second connector 340 cooperate to form a heat exchange flow channel 301. Both the first connector 330 and the second connector 340 are equipped with one-way throttling valve cores 400.

[0055] In this embodiment, a first channel 311 and a second channel 312 are formed on the radiator body 310. The end cap 320 cooperates with the radiator body 310 to form a connecting cavity 304, connecting the first channel 311 and the second channel 312. A first connecting pipe 330 and a second connecting pipe 340 are provided on the radiator body 310 to form a heat exchange channel 301. This eliminates the need for the heat dissipation pipe in the previous embodiment, reducing the cost of the refrigerant radiator 300. Since the heat dissipation pipe is eliminated, the thermally conductive silicone added between the heat dissipation pipe and the heat sink to increase thermal conductivity can also be eliminated, further reducing the cost of the refrigerant radiator 300.

[0056] In some embodiments, a first connecting groove may be provided on the end face of the first end of the radiator body 310, and an end cap 320 is disposed in the first connecting groove to cooperate with the first connecting groove to form a connecting cavity 304. The periphery of the first connecting groove has a wall thickness, so the first connecting groove cannot cover the entire end face of the radiator body 310, which will limit the number of first channels 311 and second channels 312 arranged, thereby reducing the cooling efficiency.

[0057] Please see Figure 2 In one optional embodiment, the end cap 320 is connected to the outer peripheral surface of the first end of the heat sink body 310 and completely covers the end face of the first end of the heat sink body 310.

[0058] In this embodiment, the end cap 320 is connected to the outer peripheral surface of the first end of the radiator body 310. The end cap 320 and the end face of the radiator body 310 cooperate to form a communicating cavity 304. Therefore, the communicating cavity 304 can cover the entire end face of the radiator body 310. The entire end face area of ​​the radiator body 310 can be used to arrange the openings of the first channel 311 and the second channel 312, thereby allowing more first channels 311 and second channels 312 to be arranged, so as to improve the cooling efficiency of the refrigerant radiator 300.

[0059] Please see Figure 4 In one alternative embodiment, the end cap 320 includes: The cover plate 321 and the enclosure wall 322 are arranged around the edge of the cover plate 321. A part of the enclosure wall 322 is sleeved on the outer peripheral surface of the radiator body 310. The enclosure wall 322, the cover plate 321 and the radiator body 310 cooperate to form a communicating cavity 304.

[0060] Along the arrangement direction of the first and second ends of the radiator body 310 ( Figure 4(In the direction indicated by the x-arrow line), the size of the portion of the enclosure 322 that is fitted onto the radiator body 310 is L1, and the total size of the enclosure 322 is L2, where L1 < (1 / 2)L2. For example, L1 can be equal to (1 / 3)L2, (1 / 4)L2, (1 / 5)L2, etc., and this application does not limit it in this way.

[0061] In this embodiment, the size of the portion of the enclosure 322 that fits onto the radiator body 310 is L1, and the total size of the enclosure 322 is L2. The depth of the connecting cavity 304 is approximately equal to (L2-L1). Therefore, L1 < (1 / 2)L2, which allows L1 to have a smaller size and the connecting cavity 304 to have a larger depth, thus giving the connecting cavity 304 a larger volume. This better buffers fluid fluctuations, allowing the fluid more space and time to be evenly distributed to each channel inlet, thereby improving the cooling efficiency of the refrigerant radiator 300. Of course, L1 can also be greater than or equal to (1 / 2)L2, and this application does not limit this.

[0062] In some embodiments, two second connecting slots may be provided on the end face of the second end of the radiator body 310. The first connecting pipe 330 and the second connecting pipe 340 are respectively disposed in the two second connecting slots to cooperate with the second connecting slots to form a connecting cavity 304. The periphery of the second connecting slot has a wall thickness, so the second connecting slot can only cover a small part of the end face of the radiator body 310. This will limit the number of first channels 311 and second channels 312 arranged, thereby reducing the cooling efficiency.

[0063] Please see Figure 3 In one optional embodiment, the end face of the second end of the radiator body 310 is provided with a relief groove 313. The relief groove 313 penetrates the radiator body 310 along the thickness direction of the radiator body 310. The relief groove 313 is located between the first channel 311 and the second channel 312. The relief groove 313 has a first sidewall 305 and a second sidewall 306 that are disposed opposite to each other.

[0064] The inner wall of the first connecting pipe 330 is in contact with the first side wall 305 and the outer peripheral surface of the radiator body 310, respectively; the inner wall of the second connecting pipe 340 is in contact with the second side wall 306 and the outer peripheral surface of the radiator body 310, respectively.

[0065] In this embodiment, the inner wall of the first connecting pipe 330 contacts the first side wall 305 and the outer peripheral surface of the radiator body 310 respectively; the inner wall of the second connecting pipe 340 contacts the second side wall 306 and the outer peripheral surface of the radiator body 310 respectively. Therefore, the first connecting pipe 330 and the second connecting pipe 340 can cover a large part of the end face of the radiator body 310. Most of the end face area can be used to arrange the openings of the first channel 311 and the second channel 312, thereby allowing more first channels 311 and second channels 312 to be arranged, so as to improve the cooling efficiency of the refrigerant radiator 300.

[0066] Please see Figure 3 In one optional embodiment, one end of the first connecting pipe 330 forms an inwardly extending first flange 331, which contacts the outer peripheral surfaces of the first sidewall 305 and the radiator body 310, respectively.

[0067] In this embodiment, one end of the first connecting pipe 330 forms an inwardly extending first flange 331. The first flange 331 contacts the outer peripheral surface of the first sidewall 305 and the radiator body 310. Compared with the first connecting pipe 330 without the first flange 331, this embodiment can use a first connecting pipe 330 with a larger cross-sectional area, thereby making the flow area of ​​the first connecting pipe 330 larger, so as to better buffer fluid fluctuations and allow the fluid to have more space and time to be evenly distributed to the inlet of each first channel 311, thereby improving the cooling efficiency of the refrigerant radiator 300.

[0068] Please see Figure 3 In one optional embodiment, one end of the second connector 340 forms an inwardly extending second flange 341, which contacts the outer peripheral surfaces of the second sidewall 306 and the radiator body 310, respectively.

[0069] In this embodiment, one end of the second connector 340 forms an inwardly extending second flange 341. The second flange 341 contacts the second sidewall 306 and the outer peripheral surface of the radiator body 310. Compared with the second connector 340 without the second flange 341, this embodiment can use a second connector 340 with a larger cross-sectional area, thereby making the flow area of ​​the second connector 340 larger, so as to better buffer fluid fluctuations and allow the fluid to have more space and time to be evenly distributed to the inlet of each second channel 312, thereby improving the cooling efficiency of the refrigerant radiator 300.

[0070] Please see Figure 3 In one alternative embodiment, the first control unit 330 includes: The first pipe section 332 has a first port 302. Specifically, the one-way throttle valve core 400 at the first port 302 is located inside the first pipe section 332, and it cooperates with the first pipe section 332 to form a first one-way throttle valve 510.

[0071] The second pipe section 333 is located between the first pipe section 332 and the first channel 311. The flow area of ​​the second pipe section 333 is larger than that of the first pipe section 332. The second pipe section 333 is connected to all the first channels 311.

[0072] Because the one-way throttling valve core 400 has a small external dimension, in order to adapt to the external dimension of the one-way throttling valve core 400, in this embodiment, the flow area of ​​the first pipe section 332 used to install the one-way throttling valve core 400 is designed to be smaller than the flow area of ​​the second pipe section 333. This allows the first pipe section 332 to fit the existing external dimension of the one-way throttling valve core 400, thus eliminating the need for a redesign of the one-way throttling valve core 400 and reducing the design difficulty of the air conditioner. Of course, the flow areas of the first pipe section 332 and the second pipe section 333 can also be equal; this application does not impose this limitation.

[0073] Please see Figure 3 In one alternative embodiment, the second receiver 340 includes: The third pipe section 342 has a second port 303. Specifically, the one-way throttle valve core 400 at the second port 303 is located inside the third pipe section 342, and it cooperates with the third pipe section 342 to form a second one-way throttle valve 520.

[0074] The fourth pipe section 343 is located between the third pipe section 342 and the second channel 312. The flow area of ​​the fourth pipe section 343 is larger than that of the third pipe section 342. The fourth pipe section 343 is connected to all the second channels 312.

[0075] Because the one-way throttle valve core 400 has a small external size, in order to adapt to the external size of the one-way throttle valve core 400, in this embodiment, the flow area of ​​the third pipe section 342 used to install the one-way throttle valve core 400 is designed to be smaller than the flow area of ​​the fourth pipe section 343. In this way, the third pipe section 342 can be adapted to the external size of the existing one-way throttle valve core 400, so that the one-way throttle valve core 400 does not need to be redesigned, thereby reducing the design difficulty of the air conditioner.

[0076] In one optional embodiment, the cross-sectional shape of the first channel 311 is circular or elliptical, and the cross-sectional shape of the second channel 312 is circular or elliptical.

[0077] In this embodiment, compared to rectangular or polygonal cross-sections, circular or elliptical cross-sections have no sharp corners. Sharp corners are natural stress concentration points, and under the influence of internal pressure and external thermal cycling, cracks are easily generated from these areas. Circular and elliptical channels fundamentally avoid this problem, thereby extending the service life of the refrigerant radiator 300. Furthermore, compared to a circular first channel 311, an elliptical first channel 311 has a larger perimeter, thus providing a larger heat exchange area and improving the heat exchange efficiency of the refrigerant radiator 300.

[0078] The foregoing embodiments of this application focus on describing the differences between various embodiments. As long as the different optimization features between embodiments are not contradictory, they can be combined to form better embodiments. For the sake of brevity, these differences will not be elaborated upon here. The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art, under the guidance of this application, can make many modifications without departing from the spirit and scope of the claims, all of which fall within the protection scope of this application.

Claims

1. An air conditioner, characterized in that, include: Heat exchange pipeline (100), wherein the following are connected in series: Compressor (210); Reversing valve; Indoor heat exchanger (220); Outdoor heat exchanger (230); A refrigerant radiator (300) is located between the indoor heat exchanger (220) and the outdoor heat exchanger (230). The refrigerant radiator (300) is used to cool electronic control components. The refrigerant radiator (300) is provided with a heat exchange channel (301). The heat exchange channel (301) has a first port (302) and a second port (303). Both the first port (302) and the second port (303) are connected to the heat exchange pipeline (100). The air conditioner also includes: An expansion valve (240) is connected in parallel with the refrigerant radiator (300); One-way throttle valve core (400), the one-way throttle valve core (400) is provided at both the first port (302) and the second port (303); The one-way throttling valve core (400) at the first port (302) cooperates with the inner wall of the heat exchange channel (301) to form a first one-way throttling valve (510). The first one-way throttling valve (510) is configured to throttle the refrigerant in the heat exchange channel (301) when it flows from the second port (303) to the first port (302). The one-way throttling valve core (400) at the second port (303) cooperates with the inner wall of the heat exchange channel (301) to form a second one-way throttling valve (520). The second one-way throttling valve (520) is configured to throttle the refrigerant in the heat exchange channel (301) when it flows from the first port (302) to the second port (303).

2. The air conditioner according to claim 1, characterized in that, The refrigerant radiator (300) includes: The radiator body (310) has multiple first channels (311) and multiple second channels (312) inside. An end cap (320) is provided at the first end of the radiator body (310). The end cap (320) and the radiator body (310) cooperate to form a communicating cavity (304). Each of the first channels (311) is connected to all the second channels (312) through the communicating cavity (304). The first connecting pipe (330) is located at the second end of the radiator body (310), and the first connecting pipe (330) is connected to all the first channels (311); The second connector (340) is located at the second end of the radiator body (310), and the second connector (340) is connected to all the second channels (312); The flow channels in the first connector (330), the first channel (311), the second channel (312), and the flow channels in the second connector (340) cooperate to form the heat exchange flow channel (301). The first connector (330) and the second connector (340) are each provided with the one-way throttling valve core (400).

3. The air conditioner according to claim 2, characterized in that, The end cap (320) is connected to the outer peripheral surface of the first end of the radiator body (310) and completely covers the end face of the first end of the radiator body (310).

4. The air conditioner according to claim 3, characterized in that, The end cap (320) includes: Cover plate (321); A surrounding wall (322) is provided around the edge of the cover plate (321), and a part of the surrounding wall (322) is fitted onto the outer peripheral surface of the radiator body (310). The surrounding wall (322), the cover plate (321) and the radiator body (310) cooperate to form the communicating cavity (304). Along the arrangement direction of the first and second ends of the radiator body (310), the size of the portion of the enclosure (322) that is fitted onto the radiator body (310) is L1, and the total size of the enclosure (322) is L2, where L1 < (1 / 2)L2.

5. The air conditioner according to claim 2, characterized in that, The end face of the second end of the radiator body (310) is provided with a relief groove (313). The relief groove (313) penetrates the radiator body (310) along the thickness direction of the radiator body (310). The relief groove (313) is located between the first channel (311) and the second channel (312). The relief groove (313) has a first sidewall (305) and a second sidewall (306) arranged opposite to each other. The inner wall of the first connecting pipe (330) is in contact with the outer peripheral surface of the first side wall (305) and the radiator body (310); the inner wall of the second connecting pipe (340) is in contact with the outer peripheral surface of the second side wall (306) and the radiator body (310).

6. The air conditioner according to claim 5, characterized in that, One end of the first connector (330) forms an inwardly extending first flange (331), which contacts the outer peripheral surfaces of the first sidewall (305) and the radiator body (310).

7. The air conditioner according to claim 5, characterized in that, One end of the second connector (340) forms an inwardly extending second flange (341), which contacts the outer peripheral surfaces of the second sidewall (306) and the radiator body (310).

8. The air conditioner according to claim 5, characterized in that, The first takeover (330) includes: The first pipe segment (332) has the first port (302); The second pipe section (333) is located between the first pipe section (332) and the first channel (311). The flow area of ​​the second pipe section (333) is larger than that of the first pipe section (332). The second pipe section (333) is connected to all the first channels (311).

9. The air conditioner according to claim 2, characterized in that, The second takeover (340) includes: The third pipe section (342) has the second port (303); The fourth pipe segment (343) is located between the third pipe segment (342) and the second channel (312). The flow area of ​​the fourth pipe segment (343) is larger than that of the third pipe segment (342). The fourth pipe segment (343) is connected to all the second channels (312).

10. The air conditioner according to claim 2, characterized in that, The first channel (311) has a circular or elliptical cross-sectional shape, and the second channel (312) has a circular or elliptical cross-sectional shape.

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