Heat exchanger and air conditioner with same

Abstract

The utility model discloses a heat exchanger and an air conditioner with the same. The heat exchanger comprises fins and a heat exchanger, the multiple heat exchange pipelines are inserted into the fins in a penetrating mode, and refrigerants circulate in the heat exchange pipelines; the main pipeline is connected to the heat exchange pipeline; the conversion pipeline comprises a first pipeline, a second pipeline, a third pipeline, a fourth pipeline and a conversion part, the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are all connected with the conversion part, the second pipeline selectively communicates with the main pipeline, and the first pipeline, the third pipeline and the fourth pipeline are connected to different positions of the heat exchange pipeline correspondingly; wherein the conversion piece is suitable for being switched between a first conversion state and a second conversion state, the heat exchanger can adapt to the refrigerating and heating functions respectively, refrigerating and heating are both high in efficiency, and therefore the refrigerating and heating effects are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and in particular to a heat exchanger and an air conditioner having the same. Background Art

[0002] An air conditioner drives a refrigerant to circulate through structures such as an indoor heat exchanger and an outdoor heat exchanger through a compressor to form a refrigerant circuit. One of the outdoor heat exchanger and the indoor heat exchanger serves as a condenser, and the other serves as an evaporator. The indoor heat exchanger and the outdoor heat exchanger are used to exchange heat between the indoor and outdoor air so as to achieve the purpose of refrigeration and heating.

[0003] In the related art air conditioner, taking the outdoor heat exchanger as an example, the heat exchanger serves as a condenser when the air conditioner refrigerates. Generally, a larger degree of subcooling is required to improve the refrigerating capacity when refrigerating. The heat exchanger serves as an evaporator when the air conditioner heats. The throttled refrigerant needs to be quickly distributed for evaporation, and the resistance of the refrigerant flow is large. The heat exchanger cannot be compatible with the different requirements of refrigeration and heating, resulting in poor refrigeration and heating effects. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, an object of the utility model is to provide a heat exchanger which can respectively meet the requirements of refrigeration and heating, and maintain high efficiency in both refrigeration and heating.

[0005] The utility model also provides an air conditioner having the heat exchanger.

[0006] To achieve the above object, according to an embodiment of the utility model, the heat exchanger includes: fins; a plurality of heat exchange pipelines, the plurality of heat exchange pipelines are inserted through the fins, and a refrigerant flows through the heat exchange pipelines; and further includes: a main pipeline, the main pipeline is connected to the heat exchange pipelines; a conversion pipeline, the conversion pipeline includes a first pipeline, a second pipeline, a third pipeline, a fourth pipeline and a conversion member, the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are all connected to the conversion member, the second pipeline can be selectively communicated with the main pipeline, and the first pipeline, the third pipeline and the fourth pipeline are respectively connected to different positions of the heat exchange pipelines; wherein, the conversion member is adapted to switch between a first conversion state and a second conversion state. When the conversion member is in the first conversion state, the first pipeline and the second pipeline are both disconnected from the main pipeline, and the third pipeline is communicated with the fourth pipeline; when the conversion member is in the second conversion state, the first pipeline is communicated with the fourth pipeline and the second pipeline is communicated with the third pipeline.

[0007] The heat exchanger according to an embodiment of the utility model can respectively meet the requirements of refrigeration and heating, and maintain high efficiency in both refrigeration and heating.

[0008] According to some specific embodiments of the present utility model, the conversion member includes: a conversion valve body having a first valve port, a second valve port, a third valve port, and a fourth valve port. The first pipeline is connected to the first valve port, the second pipeline is connected to the second valve port, the third pipeline is connected to the third valve port, and the fourth pipeline is connected to the fourth valve port; a conversion core body movably installed in the conversion valve body to switch between the first conversion state and the second conversion state.

[0009] According to some specific embodiments of the present utility model, the first valve port, the second valve port, and the third valve port face the same side of the conversion valve body and are arranged at intervals along a straight line, and the fourth valve port faces the other side of the conversion valve body.

[0010] According to some specific embodiments of the present utility model, the longitudinal section of the conversion core body is configured as an arch, and an inner communication cavity is jointly formed by the inner side of the arch and the inner wall of the conversion valve body. The inner communication cavity communicates with the first valve port and the second valve port, or communicates with the second valve port and the third valve port; an outer communication cavity is jointly formed by the outer side of the arch and the inner wall of the conversion valve body. The outer communication cavity communicates with the first valve port and the fourth valve port, or communicates with the third valve port and the fourth valve port.

[0011] Further, the conversion member further includes: a first pressure supply pipe, one end of the first pressure supply pipe communicates with one end of the outer communication cavity adjacent to the first valve port, and the other end of the first pressure supply pipe is connected to the first valve port; a second pressure supply pipe, one end of the second pressure supply pipe communicates with one end of the outer communication cavity adjacent to the third valve port, and the other end of the second pressure supply pipe is connected to the third valve port.

[0012] According to some specific embodiments of the present utility model, the main pipeline includes: a reversing valve having a first shunt port, a second shunt port, and a main port, and the second pipeline is connected to the second shunt port; a collecting pipe connected to the main port; a shunt pipe connected to the first shunt port.

[0013] According to some specific embodiments of the present utility model, the reversing valve includes: a reversing valve body, the second shunt port and the main port are respectively located at two ends of the reversing valve body, and the first shunt port is located on one side between the second shunt port and the main port; a reversing core body movably installed in the valve body for opening and closing the second shunt port.

[0014] According to some specific embodiments of the present utility model, a first sealing inclined surface is configured on the outer peripheral surface of one end of the reversing valve body adjacent to the first diversion port; one end of the reversing core body is configured with a sealing column, and a second sealing inclined surface matching with the first sealing inclined surface is configured on the outer peripheral surface of the reversing core body adjacent to the sealing column. The sealing column is adapted to seal with the second diversion port, and the second sealing inclined surface seals with the first sealing inclined surface.

[0015] According to some specific embodiments of the present utility model, limiting edges are circumferentially and spacedly arranged on the outer peripheral surface of the reversing core body, and refrigerant is adapted to flow between the plurality of limiting edges. The limiting edges are engaged with the inner peripheral wall of the reversing valve body.

[0016] According to an embodiment of the second aspect of the present utility model, an air conditioner is provided, including: a refrigerant circuit for circulating refrigerant sequentially through a compressor, an indoor heat exchanger, a throttling assembly, and an outdoor heat exchanger. One of the outdoor heat exchanger and the indoor heat exchanger serves as a condenser, and the other serves as an evaporator; the outdoor heat exchanger and / or the indoor heat exchanger is the heat exchanger according to any one of the above.

[0017] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic structural diagram of the refrigeration mode of an air conditioner according to an embodiment of the present utility model;

[0020] Figure 2 is a schematic structural diagram of the refrigeration mode of a heat exchanger according to an embodiment of the present utility model;

[0021] Figure 3 is a schematic structural diagram of the heating mode of a heat exchanger according to an embodiment of the present utility model;

[0022] Figure 4 is a schematic structural diagram of an outdoor unit of an air conditioner according to an embodiment of the present utility model;

[0023] Figure 5 is a schematic structural diagram of a heat exchanger according to an embodiment of the present utility model;

[0024] Figure 6 is a schematic structural diagram of the first conversion state of a conversion member of a heat exchanger according to an embodiment of the present utility model;

[0025] Figure 7 It is a schematic structural diagram of the second conversion state of the conversion part of the heat exchanger according to an embodiment of the present utility model;

[0026] Figure 8 It is a cross-sectional view of the reversing valve of the heat exchanger according to an embodiment of the present utility model;

[0027] Figure 9 It is a schematic structural diagram of the valve core of the reversing valve of the heat exchanger according to an embodiment of the present utility model;

[0028] Figure 10 It is a side view of the valve core of the reversing valve of the heat exchanger according to an embodiment of the present utility model.

[0029] Reference numerals:

[0030] Heat exchanger 1, heat exchange pipeline 100, main pipeline 200, conversion pipeline 300,

[0031] First pipeline 11, second pipeline 12, third pipeline 13, fourth pipeline 14, conversion part 400,

[0032] Reversing valve 210, first shunt port 21, second shunt port 22, main port 23, collecting pipe 220,

[0033] Shunt pipe 230, conversion valve body 410, conversion core body 420,

[0034] First valve port 41, second valve port 42, third valve port 43, fourth valve port 44,

[0035] Inner communication cavity 401, outer communication cavity 402,

[0036] First pressure supply pipe 430, second pressure supply pipe 440, reversing valve body 211, reversing core body 212,

[0037] First sealing inclined surface 221, sealing column 213, second sealing inclined surface 214, limiting edge 215,

[0038] Air conditioner 2, compressor 10, indoor heat exchanger 20, throttling assembly 30, outdoor heat exchanger 40. Detailed implementation manners

[0039] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0040] In the description of the present utility model, the "first feature" and the "second feature" may include one or more of such features.

[0041] In the description of the present utility model, the meaning of "a plurality of" is two or more.

[0042] In the description of the present utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0043] In the description of the present utility model, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature.

[0044] The heat exchanger 1 according to an embodiment of the present utility model will be described below with reference to the drawings.

[0045] As Figures 1-10 shown, the heat exchanger 1 according to an embodiment of the present utility model includes: fins, a plurality of heat exchange pipelines 100, a main pipeline 200, and a conversion pipeline 300. The plurality of heat exchange pipelines 100 are interspersed in the fins, and a refrigerant flows in the heat exchange pipelines 100.

[0046] The main pipeline 200 is connected to the heat exchange pipelines 100. The conversion pipeline 300 includes a first pipeline 11, a second pipeline 12, a third pipeline 13, a fourth pipeline 14, and a conversion member 400. The first pipeline 11, the second pipeline 12, the third pipeline 13, and the fourth pipeline 14 are all connected to the conversion member 400. The second pipeline 12 is selectively communicable with the main pipeline 200. The first pipeline 11, the third pipeline 13, and the fourth pipeline 14 are respectively connected to different positions of the heat exchange pipelines 100.

[0047] Among them, the conversion member 400 is adapted to switch between a first conversion state and a second conversion state. When the conversion member 400 is in the first conversion state, both the first pipeline 11 and the second pipeline 12 are disconnected from the main pipeline 200, and the third pipeline 13 is communicated with the fourth pipeline 14. When the conversion member 400 is in the second conversion state, the first pipeline 11 is communicated with the fourth pipeline 14, and the second pipeline 12 is communicated with the third pipeline 13.

[0048] For example, the heat exchanger 1 can be a heat exchanger of an outdoor unit or a heat exchanger of an indoor unit. The shunt pipe 230 is connected to the heat exchange pipeline 100 of the first row. The fourth pipeline 14 is connected to the heat exchange pipeline 100 below the shunt pipe 230. The third pipeline 13 is connected to the heat exchange pipeline 100 below the fourth pipeline 14. The first pipeline 11 is connected to the heat exchange pipeline 100 below the third pipeline 13. The fourth pipeline 14 and the shunt pipe 230 are separated by multiple rows of heat exchange pipelines 100. The third pipeline 13 and the fourth pipeline 14 are connected to the heat exchange pipelines 100 of adjacent rows. There are multiple rows of heat exchange pipelines 100 between the third pipeline 13 and the first pipeline 11.

[0049] The conversion member 400 can automatically switch between the first conversion state and the second conversion state through its internal pressure, or the conversion member 400 can be configured as a solenoid valve for control, as long as the switching function between the first conversion state and the second conversion state is satisfied.

[0050] According to the heat exchanger 1 of the embodiment of the present utility model, by providing the conversion member 400, in the refrigeration mode and the heating mode, the pipelines of the heat exchanger 1 have different flow paths, meeting the usage requirements of different working conditions.

[0051] Taking the outdoor heat exchanger 40 as an example, when in the refrigeration mode, the outdoor heat exchanger 40 is used as a condenser. The compressor 10 flows the refrigerant through the main pipeline 200 into the heat exchange pipeline 100. When condensing, the pressure of the heat exchanger 1 is relatively high, and the heat of the refrigerant is released to the air to change the gaseous refrigerant into a liquid state. By increasing the single flow path of the heat exchange pipeline 100 and increasing the number of heat exchange pipelines 100, the subcooling degree can be increased to improve the refrigerating capacity. Switch the conversion pipeline 300 to the first conversion state, cut off the connection between the first pipeline 11 and the second pipeline 12 and the main pipeline 200. Among them, the third pipeline 13 and the fourth pipeline 14 are connected to the middle section of the heat exchange pipeline 100. By communicating the third pipeline 13 and the fourth pipeline 14, the refrigerant will flow through the heat exchange pipeline 100 and the third pipeline 13 and the fourth pipeline 14 and then return to the heat exchange pipeline 100, without shunting the refrigerant, so as to form a single flow path in the heat exchange pipeline 100. The refrigerant can flow efficiently inside the heat exchanger 1, conduct efficient heat exchange, and increase the subcooling degree to increase the refrigerating capacity.

[0052] When in the heating mode, the outdoor heat exchanger 40 is used as an evaporator. After throttling, the flow rate of the refrigerant slows down, and the pressure of the heat exchanger 1 is relatively small. The air absorbs the cold of the refrigerant, causing the liquid refrigerant to turn into a gas. To reduce the refrigerant resistance, more flow paths need to be set for evaporation. The conversion pipeline 300 is switched to the second conversion state, the first pipeline 11 is connected to the fourth pipeline 14, and the second pipeline 12 is connected to the third pipeline 13. The refrigerant in the heat exchange pipeline 100 flows through the third pipeline 13 and the second pipeline 12 to form a first flow path. Another part of the refrigerant in the heat exchange pipeline 100 flows to the first pipeline 11 and the fourth pipeline 14 in sequence, then returns to the heat exchange pipeline 100 and finally flows to the main pipeline 200 to form a second flow path. The first flow path and the second flow path converge at the main pipeline 200. By splitting the refrigerant in the heat exchange pipeline 100 into the first flow path and the second flow path, a double flow path is formed. Thus, the resistance of the refrigerant is reduced, and the refrigerant can quickly flow to the main pipeline 200 to ensure the flow rate of the refrigerant during heating.

[0053] Therefore, for the heat exchanger 1 according to the embodiment of the present invention, for different working conditions of the heat exchanger 1, the refrigerant flow path and flow direction in the heat exchanger 1 can be flexibly adjusted. Without additionally increasing the number of heat exchangers 1, the change in the number of refrigerant branch paths can be achieved, so as to meet different flow paths for refrigeration and heating, respectively adapt to the functions of refrigeration and heating, and maintain high efficiency in both refrigeration and heating, thereby ensuring the refrigeration and heating effects.

[0054] In some specific embodiments of the present invention, as Figure 6 , Figure 7 shown, the conversion part 400 includes: a conversion valve body 410 and a conversion core 420. The conversion valve body 410 has a first valve port 41, a second valve port 42, a third valve port 43, and a fourth valve port 44. The first pipeline 11 is connected to the first valve port 41, the second pipeline 12 is connected to the second valve port 42, the third pipeline 13 is connected to the third valve port 43, and the fourth pipeline 14 is connected to the fourth valve port 44. The conversion core 420 is movably installed in the conversion valve body 410 to switch between the first conversion state and the second conversion state.

[0055] Among them, the conversion valve body 410 forms a shell structure, and a cavity is formed inside the conversion valve body 410. The conversion core 420 can move linearly along the cavity to switch different valve ports. Specifically, as Figure 2As shown, when the air conditioner 2 is in the cooling mode, the conversion core 420 moves to one end of the conversion valve body 410 adjacent to the first valve port 41. The conversion core 420 connects the first valve port 41 and the second valve port 42. However, since the main pipeline 200 is cut off from the first pipeline 11 and the second pipeline 12, the refrigerant does not flow through the first pipeline 11 and the second pipeline 12. The conversion core 420 connects the third valve port 43 and the fourth valve port 44. When the conversion core 420 moves to one end of the conversion core 420 adjacent to the third valve port 43, the refrigerant in the heat exchange pipeline 100 flows through the third pipeline 13 and the fourth pipeline 14 and then returns to the heat exchange pipeline 100 and finally flows to the main pipeline 200 to form a first flow path.

[0056] As Figure 3 shown, when the air conditioner 2 is in the heating mode, the conversion core 420 moves to one end of the conversion valve body 410 adjacent to the third valve port 43. The conversion core 420 connects the first valve port 41 and the second valve port 42. At this time, the main pipeline 200 is connected to the second pipeline 12 and the second pipeline 12 is connected to the third pipeline 13. Part of the refrigerant can flow through the heat exchange pipeline 100 and then flow through the third pipeline 13 and the second pipeline 12 in sequence to the main pipeline 200. And the conversion core 420 connects the first valve port 41 and the fourth valve port 44. The refrigerant in the heat exchange pipeline 100 flows through the first pipeline 11 and the fourth pipeline 14 and then returns to the heat exchange pipeline 100 and finally flows to the main pipeline 200. By switching the conversion core 420 into the first flow path and the second flow path, the refrigerant does not only flow inside the heat exchange pipeline 100, but part of the refrigerant is diverted to the second pipeline 12 and the third pipeline 13. Thus, there are more flow paths for the refrigerant to flow, reducing the resistance of the low-pressure refrigerant flow.

[0057] In some specific embodiments of the present invention, as Figure 6 and Figure 7 shown, the first valve port 41, the second valve port 42, and the third valve port 43 face the same side of the conversion valve body 410 and are arranged at intervals along a straight line, and the fourth valve port 44 faces the other side of the conversion valve body 410.

[0058] By arranging the first valve port 41, the second valve port 42, and the third valve port 43 on the same side of the conversion valve body 410 at intervals along a straight line and the fourth valve port 44 on the other side of the conversion valve body 410, the conversion core 420 can connect the first valve port 41 and the second valve port 42, or connect the second valve port 42 and the third valve port 43 on one side of the conversion valve body 410.

[0059] Specifically, when the conversion core 420 moves to one end adjacent to the first valve port 41, the first valve port 41 and the second valve port 42 can be connected. When the conversion core 420 moves to one end adjacent to the third valve port 43, the second valve port 42 and the third valve port 43 can be connected. The conversion core 420 corresponds to the positions of two of the first valve port 41, the second valve port 42, and the third valve port 43 to realize different refrigerant flow paths.

[0060] Moreover, in the refrigeration mode, the refrigerant flows from the heat exchange pipeline 100 through the fourth pipeline 14 to the fourth valve port 44 and enters the conversion valve body 410. Under the push of the refrigerant pressure, the conversion core 420 moves in the direction of the first valve port 41, thereby connecting the third valve port 43 and the fourth valve port 44. Since the main pipeline 200 is cut off from the first pipeline 11 and the second pipeline 12, no refrigerant flows through the first valve port 41 and the second valve port 42, forming the control of the first conversion state with a single flow path; in the heating mode, the flow direction of the refrigerant in the heat exchange pipeline 100 of the heat exchanger 1 is opposite. The refrigerant flows from the heat exchange pipeline 100 through the first pipeline 11 to the first valve port 41. Under the push of the refrigerant pressure at the first valve port 41, the conversion core 420 moves in the direction of the third valve port 43, thereby connecting the first valve port 41 and the fourth valve port 44, and connecting the second valve port 42 and the third valve port 43, realizing the control of the second conversion state with a double flow path. Among them, the switching between the first conversion state and the second conversion state is realized by automatically controlling only by the refrigerant pressure pushing the conversion core 420, without electric control, the structure is simpler and more reliable, the use of parts is reduced, and the cost is lower.

[0061] In some specific embodiments of the present invention, such as Figure 6 and Figure 7 As shown, the longitudinal section of the conversion core 420 is configured as an arch. The inner side of the arch and the inner wall of the conversion valve body 410 together form an inner communication cavity 401. The inner communication cavity 401 communicates with the first valve port 41 and the second valve port 42, or communicates with the second valve port 42 and the third valve port 43. The outer side of the arch and the inner wall of the conversion valve body 410 together form an outer communication cavity 402. The outer communication cavity 402 communicates with the first valve port 41 and the fourth valve port 44, or communicates with the third valve port 43 and the fourth valve port 44.

[0062] By configuring the cross-section of the conversion core 420 as an arch, a smoother refrigerant flow channel can be formed inside the conversion valve body 410. The refrigerant forms a semi-circular flow path on the cross-section of the inner communication cavity 401 body. The refrigerant flows along the inner side of the arch of the conversion core 420, which will not cause a large impact on the conversion part 400, reduce the vibration of the heat exchange pipeline 100, and can also increase the refrigerant flow speed.

[0063] Among them, the inner arch formed by the conversion core 420 exactly corresponds to the positions of the first valve port 41 and the second valve port 42, or corresponds to the positions of the second valve port 42 and the third valve port 43, so as to ensure that only two of the first valve port 41, the second valve port 42 and the third valve port 43 are connected. The conversion core 420 forms an inner communication cavity 401 and an outer communication cavity 402 that divide the interior of the conversion valve body 410. The inner communication cavity 401 communicates with two adjacent ones of the first valve port 41, the second valve port 42 and the third valve port 43, and the outer communication cavity 402 communicates with the fourth valve port 44 and the first valve port 41 or communicates with the fourth valve port 44 and the third valve port 43. Thus, the inner communication cavity 401 and the outer communication cavity 402 form two mutually separated flow paths, realizing the switching between the first flow path and the second flow path.

[0064] Further, as Figure 6 and Figure 7 shown, the conversion member 400 further includes: a first pressure supply pipe 430 and a second pressure supply pipe 440. One end of the first pressure supply pipe 430 communicates with one end of the outer communication cavity 402 adjacent to the first valve port 41, and the other end of the first pressure supply pipe 430 is connected to the first valve port 41. One end of the second pressure supply pipe 440 communicates with one end of the outer communication cavity 402 adjacent to the third valve port 43, and the other end of the second pressure supply pipe 440 is connected to the third valve port 43.

[0065] Among them, the first pressure supply pipe 430 and the second pressure supply pipe 440 are connected to the conversion valve body 410 itself to form an integral structure, without the need to be connected to pipelines, and the structural integrity is stronger. Specifically, the first pressure supply pipe 430 and the second pressure supply pipe 440 are respectively connected to both ends of the conversion valve body 410. The first pressure supply pipe 430 realizes communication with the first pipeline 11 by communicating with the first valve port 41. The second pressure supply pipe 440 realizes communication with the fourth pipeline 14 by communicating with the fourth valve port 44. The refrigerant in the first pipeline 11 flows into one end of the conversion valve body 410 through the first valve port 41 by the first pressure supply pipe 430, thereby providing refrigerant pressure to one end of the conversion valve body 410 adjacent to the first valve port 41 and pushing the conversion core 420 to move axially along the conversion valve body 410. The refrigerant in the second pipeline 12 flows into the other end of the conversion valve body 410 through the fourth valve port 44 by the second pressure supply pipe 440, thereby providing refrigerant pressure to one end of the conversion valve body 410 adjacent to the third valve port 43 and pushing the conversion core 420 to move axially in the opposite direction along the conversion valve body 410. Thus, the first pressure supply pipe 430 and the second pressure supply pipe 440 respectively provide pressures in opposite directions to the conversion core 420, control the conversion core 420 to move in different directions, and further realize the switching between the first flow path and the second flow path.

[0066] In some specific embodiments of the present invention, as Figure 2 shown, the main pipeline includes: a reversing valve 210, a collecting pipe 220 and a shunt pipe 230.

[0067] The reversing valve 210 has a first shunt port 21, a second shunt port 22, and a main port 23. The second pipeline 12 is connected to the second shunt port 22. The collecting pipe 220 is connected to the main port 23. The shunt pipe 230 is connected to the first shunt port 21.

[0068] By constructing the reversing valve 210, the collecting pipe 220, and the shunt pipe 230 with the main pipeline, the refrigerant in the second pipeline 12 and the refrigerant in the shunt pipe 230 can be made to converge. Among them, when the heat exchanger 1 is refrigerating, the reversing valve 210 closes the second shunt port 22, and the refrigerant only flows from the collecting pipe 220 through the main port 23 and the first shunt port 21 of the reversing valve 210 to the shunt pipe 230. When the heat exchanger 1 is heating, the reversing valve 210 opens the second shunt port 22. Part of the refrigerant enters the first shunt port 21 from the shunt pipe 230, and another part enters the second shunt port 22 from the second pipeline 12. After the refrigerants at the first shunt port 21 and the second shunt port 22 are collected, they flow from the main port 23 to the collecting pipe 220.

[0069] In some specific embodiments of the present utility model, such as Figure 8 shown, the reversing valve 210 includes: a reversing valve body 211 and a reversing core 212.

[0070] The second shunt port 22 and the main port 23 are respectively located at both ends of the reversing valve body 211, and the first shunt port 21 is located on one side between the second shunt port 22 and the main port 23. The reversing core 212 is movably installed in the valve body and is used to open and close the second shunt port 22.

[0071] Among them, a limiting ring is constructed in the reversing valve body 211 to keep the reversing core 212 at the second shunt port. The reversing valve 210 is specifically a "T"-shaped three-way valve. The reversing core 212 is located at one end of the second shunt port 22 inside the reversing valve, and the reversing core 212 moves along the axial direction of the second shunt port 22. The main port 23 and the second shunt port 22 are located at both ends of the heat exchange valve body. The reversing core 212 moves under opposite pressures during refrigeration and heating. When the air conditioner 2 is refrigerating, the reversing core 212 moves from the main port 23 towards the second shunt port 22 to block the second shunt port 22, thereby forming a single flow path; when the air conditioner 2 is heating, the reversing core 212 moves from the second shunt port 22 towards the main port 23, opening the second shunt port 22, and then the refrigerant flows from the first shunt port 21 and the second shunt port 22 to the main port 23 respectively, forming a double flow path.

[0072] In some specific embodiments of the present utility model, such as Figure 8As shown in the figure, a first sealing inclined surface 221 is formed on the outer peripheral surface of one end of the reversing valve body 211 adjacent to the first diversion port 21. One end of the reversing core body 212 is formed with a sealing column 213. A second sealing inclined surface 214 that cooperates with the first sealing inclined surface 221 is formed on the outer peripheral surface of the reversing core body 212 adjacent to the sealing column 213. The sealing column 213 is adapted to seal with the second diversion port 22, and the second sealing inclined surface 214 seals with the first sealing inclined surface 221.

[0073] When the air conditioner 2 is refrigerating and the second valve port 42 needs to be closed, the refrigerant in the main pipeline 200 flows into the interior of the reversing valve body 211 from the main flow port 23. At this time, the reversing core body 212 moves in the direction of the second diversion port 22 under the action of the refrigerant pressure. The reversing core body 212 seals by closely contacting the first sealing inclined surface 221 of the reversing valve body 211 with the second sealing inclined surface 214.

[0074] When the air conditioner 2 is heating and the second valve port 42 needs to be opened, the refrigerant in the second pipeline 12 flows into the interior of the reversing valve body 211 from the second diversion port 22. At this time, the reversing core body 212 moves in the direction of the main flow port 23 under the action of the refrigerant pressure. The second sealing inclined surface 214 of the reversing core body 212 separates from the first sealing inclined surface 221 of the reversing valve body 211, so that sealing is no longer formed. The refrigerant at the second valve port 42 passes through the reversing core body 212 and flows towards the main flow port 23, and the refrigerant at the first valve port 41 flows through the reversing valve body 211 towards the main flow port 23. Thus, the refrigerants at the first valve port 41 and the second valve port 42 converge at the converging port and flow to the converging pipe 220.

[0075] In some specific embodiments of the present invention, as Figure 9 and Figure 10 shown, limiting edges 215 are formed on the outer peripheral surface of the reversing core body 212 at circumferentially spaced intervals. The refrigerant is adapted to flow between the multiple limiting edges 215, and the limiting edges 215 cooperate with the inner peripheral wall of the reversing valve body 211.

[0076] Among them, the limiting edges 215 are connected to one end of the reversing core body 212 far from the sealing column 213. The limiting edges 215 protrude radially outward and cooperate with the inner peripheral wall of the reversing valve body 211. The reversing core body 212 moves axially inside the reversing valve body 211 to open and close the second valve port 42. And a channel for flowing refrigerant is formed between adjacent limiting edges 215. Thus, when the reversing core body 212 opens the second valve port 42, the refrigerant can flow through the reversing core body 212 to the main flow port 23. The multiple limiting edges 215 can not only ensure the relative position of the reversing core body 212 in the reversing valve body 211, but also provide a channel for the refrigerant to flow between adjacent limiting edges 215. Thus, a uniform flow channel is formed on the outer peripheral side of the reversing core body 212 to ensure the flow of the refrigerant.

[0077] The air conditioner 2 according to an embodiment of the present utility model will be described below.

[0078] The air conditioner 2 according to an embodiment of the present utility model, as Figure 1 shown, includes a refrigerant circuit through which refrigerant circulates in sequence via a compressor 10, an indoor heat exchanger 20, a throttling assembly 30, and an outdoor heat exchanger 40. One of the outdoor heat exchanger 40 and the indoor heat exchanger 20 serves as a condenser, and the other serves as an evaporator. The outdoor heat exchanger 40 and / or the indoor heat exchanger 20 is the heat exchanger of the above embodiment of the present utility model.

[0079] The operation process of the air conditioner 2 will be described below by taking the outdoor heat exchanger 40 as an example:

[0080] When the air conditioner 2 is refrigerating, the outdoor heat exchanger 40 operates as a condenser. The high-temperature and high-pressure gaseous refrigerant discharged by the compressor 10 reaches the main pipeline 200 after passing through the four-way reversing valve. Through the control of the reversing valve, the manifold 220 is only connected to the shunt pipe 230. The refrigerant flows into the heat exchange pipeline 100 of the heat exchanger 1 through the shunt pipe 230 for outdoor heat exchange. The outdoor heat exchange efficiency is relatively high, so that a single-flow path is formed in the heat exchange pipeline 100. The refrigerant can flow efficiently inside the heat exchanger 1 for efficient heat exchange, increasing the subcooling degree. At the same time, the indoor heat exchanger 20 also has a relatively high refrigerating capacity as an evaporator.

[0081] When the air conditioner 2 is heating, the outdoor heat exchanger operates as an evaporator. The high-pressure and high-temperature gaseous refrigerant discharged by the compressor 10 reaches the indoor heat exchanger 20 after passing through the four-way reversing valve, and then reaches the throttling assembly 30 for throttling after passing through the indoor heat exchanger 20. After the throttled refrigerant is condensed in the heat exchange pipeline 100, it enters the heat exchange pipeline 100 of the outdoor heat exchanger 1 from the lower part. A part of the refrigerant in the heat exchange pipeline 100 is shunted through the first pipeline 11 and the fourth pipeline 14 and then returns to the heat exchange pipeline 100 and finally flows to the main pipeline 200. Another part flows to the second pipeline 12 through the third pipeline 13 and then flows to the main pipeline 200. The two parts of the refrigerant respectively form a double-flow path of the first flow path and the second flow path. Thus, the resistance of the refrigerant is reduced, and the refrigerant can quickly flow to the main pipeline 200 to ensure the flow rate of the refrigerant during heating.

[0082] Therefore, the air conditioner 2 according to an embodiment of the present utility model can respectively meet the refrigerating and heating requirements, and both refrigerating and heating maintain relatively high efficiency.

[0083] Other components and operations of the air conditioner 2 according to an embodiment of the present utility model are known to those of ordinary skill in the art and will not be described in detail here.

[0084] In this application, the air conditioner performs the refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

[0085] The compressor compresses the refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0086] The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by using the latent heat of evaporation of the refrigerant to perform heat exchange with the material to be cooled. Throughout the cycle, the air conditioner can adjust the temperature of the indoor space.

[0087] The outdoor unit of the air conditioner refers to the part of the refrigeration cycle including the compressor and the outdoor heat exchanger. The indoor unit of the air conditioner includes the indoor heat exchanger, and the expansion valve can be provided in the indoor unit or the outdoor unit.

[0088] The indoor heat exchanger and the outdoor heat exchanger are used as condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner functions as a heater in the heating mode. When the indoor heat exchanger is used as an evaporator, the air conditioner functions as a cooler in the cooling mode.

[0089] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0090] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A heat exchanger, characterized in that: include: fins; A plurality of heat exchange pipelines, wherein the plurality of heat exchange pipelines are inserted through the fins, and a refrigerant flows through the heat exchange pipelines; It is characterized by further comprising: A main pipeline, the main pipeline is connected to the heat exchange pipeline; A conversion pipeline, the conversion pipeline comprises a first pipeline, a second pipeline, a third pipeline, a fourth pipeline and a conversion element, the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are all connected to the conversion element, the second pipeline can be selectively connected to the main pipeline, and the first pipeline, the third pipeline and the fourth pipeline are respectively connected to different positions of the heat exchange pipeline; The conversion element is adapted to switch between a first conversion state and a second conversion state. When the conversion element is in the first conversion state, the first pipeline and the second pipeline are both disconnected from the main pipeline, and the third pipeline is connected to the fourth pipeline; When the conversion element is in the second conversion state, the first pipeline is communicated with the fourth pipeline and the second pipeline is communicated with the third pipeline.

2. The heat exchanger according to claim 1, characterized in that: The conversion element comprises: A conversion valve body, wherein the conversion valve body has a first valve port, a second valve port, a third valve port and a fourth valve port, the first pipeline is connected to the first valve port, the second pipeline is connected to the second valve port, the third pipeline is connected to the third valve port, and the fourth pipeline is connected to the fourth valve port; A switching core is movably mounted in the switching valve body to switch between the first switching state and the second switching state.

3. The heat exchanger according to claim 2, characterized in that: The first valve port, the second valve port and the third valve port face the same side of the conversion valve body and are arranged at intervals along a straight line, and the fourth valve port faces the other side of the conversion valve body.

4. The heat exchanger according to claim 3, characterized in that The longitudinal cross-section of the conversion core is configured to be arched, the inner side of the arch and the inner wall of the conversion valve body together form an inner connecting cavity, the inner connecting cavity connects the first valve port and the second valve port, or connects the second valve port and the third valve port; The outer side of the arch and the inner wall of the conversion valve body together form an external communication cavity, and the external communication cavity communicates with the first valve port and the fourth valve port, or communicates with the third valve port and the fourth valve port.

5. The heat exchanger according to claim 4, characterized in that: The conversion element also includes: A first pressure supply pipe, one end of which is connected to an end of the external communication cavity adjacent to the first valve port, and the other end of which is connected to the first valve port; A second pressure supply pipe, one end of which is connected to an end of the external communication cavity adjacent to the third valve port, and the other end of which is connected to the third valve port.

6. The heat exchanger according to claim 1, characterized in that The main pipeline includes: A reversing valve, the reversing valve having a first diversion port, a second diversion port and a main flow port, the second pipeline being connected to the second diversion port; A collecting pipe, the collecting pipe is connected to the main flow outlet; A shunt pipe is connected to the first shunt port.

7. The heat exchanger according to claim 6, characterized in that The reversing valve comprises: a reversing valve body, wherein the second branch port and the main flow port are respectively located at two ends of the reversing valve body, and the first branch port is located at one side between the second branch port and the main flow port; A reversing core is movably mounted in the valve body and is used for opening and closing the second diversion port.

8. The heat exchanger according to claim 7, characterized in that The outer peripheral surface of one end of the reversing valve body adjacent to the first diversion port is configured with a first sealing inclined surface; A sealing column is constructed at one end of the reversing core, and a second sealing slope matching the first sealing slope is constructed on the outer peripheral surface of the reversing core adjacent to the sealing column. The sealing column is suitable for sealing with the second diversion port and the second sealing slope is sealed with the first sealing slope.

9. The heat exchanger according to claim 7, characterized in that: The outer peripheral surface of the reversing core is structured with limiting edges arranged at intervals along the circumferential direction, and the plurality of limiting edges are suitable for the circulation of refrigerant, and the limiting edges are matched with the inner peripheral wall of the reversing valve body.

10. An air conditioner, comprising: A refrigerant circuit, wherein the refrigerant circulates sequentially through a compressor, an indoor heat exchanger, a throttling assembly, and an outdoor heat exchanger, wherein one of the outdoor heat exchanger and the indoor heat exchanger serves as a condenser and the other serves as an evaporator; It is characterized in that the outdoor heat exchanger and / or the indoor heat exchanger is the heat exchanger according to any one of claims 1 to 9.

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