Throttling expansion valve, outdoor unit and air conditioner

Abstract

The embodiment of the utility model provides a throttling expansion valve, an outdoor unit and an air conditioner, and belongs to the technical field of air conditioners. The valve body is connected into the shell, the preset flow channel penetrates through the valve body and comprises a first sub-flow channel and a second sub-flow channel adjacent to the first sub-flow channel, the regulator is installed in the shell, and the second sub-flow channel is located on the side, facing the regulator in the axial direction of the first sub-flow channel, of the first sub-flow channel. The adjuster is used for driving the adjusting part to get close to or get away from the first sub-runner in the axial direction of the first sub-runner so as to adjust the opening degree of the first sub-runner, and an intersection line formed by intersection of a preset plane parallel to the axial direction of the first sub-runner and the inner surface of the second sub-runner is a straight line. The intersection line formed by the intersection of the preset plane and the inner surface of the second sub-flow channel is a straight line, the size of the flow area of the second sub-flow channel is basically unchanged, when a liquid refrigerant flows into the second sub-flow channel from the first sub-flow channel, the change of the flow speed of the liquid refrigerant in the second sub-flow channel is small, the vortex shedding phenomenon can be well restrained, and the service life of the refrigerant is prolonged. And the flowing noise of the refrigerant is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to a throttling expansion valve, an outdoor unit and an air conditioner. BACKGROUND

[0002] In related art, the throttling expansion valve is usually used in a refrigeration system to adjust flow and throttle pressure reduction. When the refrigerant flows through the throttling expansion valve, a large noise is generated. SUMMARY

[0003] To solve the problems in the related art, the embodiments of the present application provide a throttling expansion valve, an outdoor unit and an air conditioner to reduce the noise of the refrigerant.

[0004] The technical scheme of the embodiments of the present application is implemented as follows:

[0005] The first aspect of the embodiments of the present application provides a throttling expansion valve, comprising:

[0006] a housing;

[0007] a valve body connected in the housing, the valve body having a preset flow channel for the refrigerant to pass through, the preset flow channel penetrating through the valve body, the preset flow channel comprising at least two sub-flow channels, one of the sub-flow channels being a first sub-flow channel, and one of the sub-flow channels being a second sub-flow channel adjacent to the first sub-flow channel;

[0008] an adjuster installed in the housing, the adjuster having an adjusting part, the second sub-flow channel being located on a side of the first sub-flow channel along an axial direction of the first sub-flow channel towards the adjuster, the adjuster being configured to drive the adjusting part to move towards or away from the first sub-flow channel along the axial direction of the first sub-flow channel to adjust the opening degree of the first sub-flow channel, a plane parallel to the axial direction of the first sub-flow channel being a preset plane, and an intersection line formed by the intersection of the preset plane and the inner surface of the second sub-flow channel being a straight line.

[0009] In some embodiments, the cross-sectional shape of the first sub-flow channel and the second sub-flow channel is circular.

[0010] In some embodiments, the diameter of the second sub-flow channel is greater than the diameter of the first sub-flow channel.

[0011] In some embodiments, the diameter of the first sub-flow channel is 1.65 mm, and the diameter of the second sub-flow channel is 4.7 mm to 4.9 mm.

[0012] In some embodiments, in the axial direction of the first sub-flow channel, the projection area of the first sub-flow channel is located in the projection area of the other sub-flow channels except the first sub-flow channel.

[0013] In some embodiments, one of the sub-channels is a third sub-channel, which is located on the side of the first sub-channel away from the second sub-channel.

[0014] In some embodiments, the regulator includes:

[0015] The adjustment body is installed inside the housing;

[0016] An actuator is disposed on the adjustment body, and an adjustment part is formed on the actuator. The actuator is projected along the axial direction of the first sub-channel, and the projection area of ​​the actuator is located within the projection area of ​​the first sub-channel so that the actuator can move into or out of the first sub-channel.

[0017] A second aspect of this application provides an outdoor unit, including:

[0018] Host;

[0019] The throttling expansion valve described above is located in the main unit.

[0020] A third aspect of this application provides an air conditioner, including the above-described throttling expansion valve, compressor, indoor heat exchanger, outdoor heat exchanger, and four-way valve. The indoor heat exchanger and the outdoor heat exchanger are respectively connected to the four-way valve. The refrigerant flowing out of the compressor flows to the indoor heat exchanger or the outdoor heat exchanger through the four-way valve. The throttling expansion valve is connected in series between the indoor heat exchanger and the outdoor heat exchanger.

[0021] In some embodiments, the air conditioner further includes a shut-off valve and at least two one-way throttling valves, one of which is connected in series between the throttling expansion valve and the outdoor heat exchanger, and the shut-off valve and the other one-way throttling valve are connected in series between the throttling expansion valve and the indoor heat exchanger.

[0022] The throttling expansion valve provided in this application embodiment has a regulator used to drive the regulating part to move closer to or further away from the first sub-flow channel along the axial direction of the first sub-flow channel to adjust the opening of the first sub-flow channel. When the regulator drives the regulating part away from the first sub-flow channel, the gap between the regulating part along the axial direction of the first sub-flow channel and the opening of the first sub-flow channel facing the regulator can be increased, thereby increasing the opening of the first sub-flow channel and increasing the flow rate of the refrigerant flowing through the throttling expansion valve. When the regulator drives the regulating part closer to the first sub-flow channel, the gap between the regulating part along the axial direction of the first sub-flow channel and the opening of the first sub-flow channel facing the regulator can be decreased, thereby decreasing the opening of the first sub-flow channel and decreasing the flow rate of the refrigerant flowing through the throttling expansion valve. The intersection line formed by the pre-defined plane and the inner surface of the second sub-channel is a straight line. The flow area of ​​the second sub-channel remains basically unchanged. When the liquid refrigerant flows from the first sub-channel into the second sub-channel, the flow velocity of the liquid refrigerant in the second sub-channel changes little, the refrigerant flow is relatively stable, and the vortex shedding phenomenon can be well suppressed, resulting in less noise from the refrigerant flow. When the air conditioner is in heating mode, the refrigerant flowing from the compressor flows to the indoor heat exchanger through the four-way valve. The refrigerant releases heat in the indoor heat exchanger to heat the indoor environment. The refrigerant flowing out of the indoor heat exchanger flows through the shut-off valve to one of the one-way throttling valves. After being throttled and depressurized by the one-way throttling valve, the refrigerant is in a liquid state. The liquid refrigerant flows from the first sub-channel of the throttling expansion valve into the second sub-channel. The flow rate of the liquid refrigerant in the second sub-channel changes less, the refrigerant flow is more stable, and the noise of the refrigerant flow is less. The throttling expansion valve is used to regulate the flow rate of the refrigerant. The refrigerant flowing out of the throttling expansion valve flows sequentially through the refrigerant pipe, the heat dissipation pipe, and another one-way throttling valve into the outdoor heat exchanger. After exchanging heat with the outdoor heat exchanger, the refrigerant flows back to the compressor through the four-way valve. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the expansion valve according to an embodiment of this application;

[0024] Figure 2 for Figure 1 Sectional view at point AA;

[0025] Figure 3 for Figure 2 Enlarged view at point B;

[0026] Figure 4 This is a schematic diagram of the structure of an air conditioner according to an embodiment of this application, showing a shut-off valve, an expansion valve, and a one-way throttle valve;

[0027] Figure 5 This is a schematic diagram of the refrigeration system of an air conditioner according to an embodiment of this application.

[0028] Explanation of reference numerals in the attached figures

[0029] 1. Throttling expansion valve; 11. Housing; 12. Valve body; 121. Preset flow channel; 1211. First sub-flow channel; 1212. Second sub-flow channel; 1213. Third sub-flow channel; 13. Regulator; 131. Adjustment unit; 132. Adjustment body; 133. Actuator; 14. Preset plane; 141. Intersecting line; 2. Compressor; 3. Indoor heat exchanger; 4. Outdoor heat exchanger; 5. Four-way valve; 6. Shut-off valve; 7. One-way throttling valve; 8. Heat dissipation pipe; 9. Radiator; 10. Refrigerant connection pipe. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0031] The specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features can form different embodiments and technical solutions. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this application will not be described separately.

[0032] In the following description, the terms "first," "second," etc., are used merely to distinguish different objects and do not indicate that the objects have the sameness or relationship. It should be understood that the directional descriptions "above," "below," "outside," and "inside" refer to the directions in normal use, while "left" and "right" refer to the left and right directions shown in the corresponding diagrams, which may or may not be the left and right directions in normal use.

[0033] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. "A plurality of" means two or more.

[0034] In related technologies, a throttling expansion valve includes a valve body and a regulator. The valve body has a preset flow channel for refrigerant to pass through. One of the sub-flow channels of the preset flow channel is a first sub-flow channel. The regulator drives the regulating part of the regulator to move closer to or further away from the first sub-flow channel along the axial direction of the first sub-flow channel to adjust the opening of the first sub-flow channel. Another sub-flow channel of the preset flow channel is a second sub-flow channel. The second sub-flow channel is adjacent to the first sub-flow channel and is located on the side of the first sub-flow channel facing the regulator. A plane parallel to the axial direction of the first sub-flow channel is a preset plane. Along the axial direction of the first sub-flow channel, the plane points from the first sub-flow channel to the second sub-flow channel. The distance between the two intersecting lines formed by the intersection of the preset plane and the inner surface of the second sub-flow channel gradually increases. When liquid refrigerant flows into the valve body from the flow channel opening at the end of the valve body away from the regulator, the flow area of ​​the second sub-flow channel keeps changing, and the flow velocity of the refrigerant in the second sub-flow channel keeps changing. When the liquid refrigerant flows through the second sub-flow channel, it fluctuates violently, resulting in vortex shedding and generating a large amount of noise.

[0035] This application provides an outdoor unit, which includes a main unit and a throttling expansion valve 1, with the throttling expansion valve 1 disposed on the main unit.

[0036] This application provides an air conditioner; please refer to [link / reference]. Figure 4 and Figure 5 The air conditioner includes a throttling expansion valve 1, a compressor 2, an indoor heat exchanger 3, an outdoor heat exchanger 4, and a four-way valve 5. The indoor heat exchanger 3 and the outdoor heat exchanger 4 are respectively connected to the four-way valve 5. The refrigerant flowing out of the compressor 2 flows to the indoor heat exchanger 3 or the outdoor heat exchanger 4 through the four-way valve 5. The throttling expansion valve 1 is connected in series between the indoor heat exchanger 3 and the outdoor heat exchanger 4.

[0037] For example, the air conditioner includes an indoor unit and an outdoor unit, and the throttling expansion valve 1 may be installed in the indoor unit.

[0038] For example, the indoor heat exchanger 3 and the outdoor heat exchanger 4 are used as evaporators or condensers. When the indoor heat exchanger 3 is used as a condenser and the outdoor heat exchanger 4 is used as an evaporator, the air conditioner heats; when the indoor heat exchanger 3 is used as an evaporator and the outdoor heat exchanger 4 is used as a condenser, the air conditioner cools.

[0039] In this embodiment, the air conditioner can achieve both cooling and heating. When the air conditioner is cooling, the high-temperature refrigerant flowing from the compressor 2 flows into the outdoor heat exchanger 4 through the four-way valve 5. The refrigerant condenses and releases heat on the outdoor heat exchanger 4. The refrigerant flowing out of the outdoor heat exchanger 4 flows through the throttling expansion valve 1, where it is throttled and depressurized, converting into low-temperature refrigerant. The low-temperature refrigerant flows into the indoor heat exchanger 3, where it absorbs heat to cool the indoor environment. After cooling, it flows back to the compressor 2 through the four-way valve 5, completing the cooling cycle. When the air conditioner is heating, the high-temperature refrigerant flowing from the compressor 2 flows into the indoor heat exchanger 3 through the four-way valve 5. The high-temperature refrigerant releases heat on the indoor heat exchanger 3 to heat the indoor environment. The refrigerant flowing out of the indoor heat exchanger 3 flows through the throttling expansion valve 1, where it is throttled and depressurized, and then flows into the outdoor heat exchanger 4. After absorbing heat on the outdoor heat exchanger 4, it flows back to the compressor 2 through the four-way valve 5, completing the heating cycle.

[0040] This application provides a throttling expansion valve 1. Please refer to [link / reference]. Figures 1-5 The throttling expansion valve 1 includes a housing 11, a valve body 12, and a regulator 13. The valve body 12 is connected inside the housing 11 and has a preset flow channel 121 for supplying refrigerant. The preset flow channel 121 extends through the valve body 12 and includes at least two sub-flow channels, one of which is a first sub-flow channel 1211, and the other is a second sub-flow channel 1212 adjacent to the first sub-flow channel 1211. The regulator 13 is installed inside the housing 11 and has an adjustment section 1. 31. The second sub-channel 1212 is located on the side of the first sub-channel 1211 facing the regulator 13 along the axial direction of the first sub-channel 1211. The regulator 13 is used to drive the adjustment part 131 to move closer to or further away from the first sub-channel 1211 along the axial direction of the first sub-channel 1211 to adjust the opening of the first sub-channel 1211. The plane parallel to the axial direction of the first sub-channel 1211 is a preset plane 14. The intersection line 141 formed by the intersection of the preset plane 14 and the inner surface of the second sub-channel 1212 is a straight line.

[0041] It should be noted that the refrigerant can flow from the first sub-channel 1211 to the second sub-channel 1212, and the refrigerant can also flow from the second sub-channel 1212 to the first sub-channel 1211.

[0042] For example, the throttling expansion valve 1 is an electronic expansion valve.

[0043] For example, the preset plane 14 may or may not coincide with the central axis of the first sub-channel 1211.

[0044] In this embodiment, the regulator 13 drives the regulating part 131 to move closer to or further away from the first sub-channel 1211 along the axial direction of the first sub-channel 1211 to adjust the opening of the first sub-channel 1211. When the regulator 13 drives the regulating part 131 away from the first sub-channel 1211, the gap between the regulating part 131 along the axial direction of the first sub-channel 1211 and the opening of the first sub-channel 1211 facing the regulator 13 can be increased, thereby increasing the opening of the first sub-channel 1211 and increasing the flow rate of the refrigerant flowing through the throttling expansion valve 1. When the regulator 13 drives the regulating part 131 closer to the first sub-channel 1211, the gap between the regulating part 131 along the axial direction of the first sub-channel 1211 and the opening of the first sub-channel 1211 facing the regulator 13 can be decreased, thereby reducing the opening of the first sub-channel 1211 and decreasing the flow rate of the refrigerant flowing through the throttling expansion valve 1. The intersection line 141 formed by the intersection of the preset plane 14 and the inner surface of the second sub-channel 1212 is a straight line. The flow area of ​​the second sub-channel 1212 remains basically unchanged. When the liquid refrigerant flows from the first sub-channel 1211 into the second sub-channel 1212, the flow velocity of the liquid refrigerant in the second sub-channel 1212 changes little, the refrigerant flow is relatively stable, and the vortex shedding phenomenon can be well suppressed, and the noise of the refrigerant flow is low. When the air conditioner is heating, the refrigerant flowing from the compressor 2 flows to the indoor heat exchanger 3 through the four-way valve 5. The refrigerant releases heat in the indoor heat exchanger 3 to heat the indoor environment. The refrigerant flowing from the indoor heat exchanger 3 flows through the shut-off valve 6 to one of the one-way throttling valves 7. After being throttled and depressurized by the one-way throttling valve 7, the refrigerant is in a liquid state. The liquid refrigerant flows from the first sub-channel 1211 of the throttling expansion valve 1 into the second sub-channel 1212. The flow area of ​​the second sub-channel 1212 remains basically unchanged. The flow velocity of the liquid refrigerant in the second sub-channel 1212 changes little, the refrigerant flow is relatively stable, and the noise of the refrigerant flow is low. The refrigerant flowing from the throttling expansion valve 1 flows sequentially through the refrigerant pipe 10, the heat dissipation pipe 8, and another one-way throttling valve 7, and flows into the outdoor heat exchanger 4. After exchanging heat with the outdoor heat exchanger 4, the refrigerant flows back to the compressor 2 through the four-way valve 5.

[0045] For ease of explanation, the axial direction of the first sub-channel 1211 is shown by arrow R1 in the figure.

[0046] In some embodiments, please refer to Figures 1-3 The cross-sectional shape of the first sub-channel 1211 and the second sub-channel 1212 is circular.

[0047] It should be noted that the cross-sections of the first sub-channel 1211 and the second sub-channel 1212 refer to the cross-sections perpendicular to the axial direction of the first sub-channel 1211.

[0048] In this embodiment, when the refrigerant flows in the first sub-channel 1211 and the second sub-channel 1212, the pressure in the first sub-channel 1211 and the second sub-channel 1212 is relatively high. The cross-sectional shape of the first sub-channel 1211 and the second sub-channel 1212 is circular. The cross-section of the first sub-channel 1211 and the second sub-channel 1212 has no sharp corners. The walls of the first sub-channel 1211 and the walls of the second sub-channel 1212 are subjected to uniform pressure, and the refrigerant flows smoothly in the circular cross-section channel.

[0049] It is understood that the cross-sectional shapes of the first sub-flow channel 1211 and the second sub-flow channel 1212 are not limited to circular shapes. For example, the cross-sectional shape of the first sub-flow channel 1211 is rectangular, and the cross-sectional shape of the second sub-flow channel 1212 is rectangular.

[0050] In some embodiments, please refer to Figures 1-3 The diameter of the second sub-channel 1212 is larger than the diameter of the first sub-channel 1211.

[0051] In this embodiment, the diameter of the second sub-channel 1212 is larger than the diameter of the first sub-channel 1211. The refrigerant flows at a lower velocity in the second sub-channel 1212, resulting in a smoother flow and a lower noise level.

[0052] It is understood that the diameter of the second sub-channel 1212 is not limited to being larger than the diameter of the first sub-channel 1211. For example, the diameter of the second sub-channel 1212 is equal to the diameter of the first sub-channel 1211.

[0053] In some embodiments, the diameter of the first sub-channel 1211 is 1.65 mm, and the diameter of the second sub-channel 1212 is 4.7 mm to 4.9 mm.

[0054] For example, the diameter of the second sub-channel 1212 is 4.7 mm, 4.8 mm or 4.9 mm.

[0055] In this embodiment, the diameter of the first sub-channel 1211 is 1.65 mm, and the diameter of the second sub-channel 1212 is 4.7 mm to 4.9 mm. The diameter of the second sub-channel 1212 is within a suitable range, and the refrigerant flow changes more gently in the second sub-channel 1212, resulting in less refrigerant noise.

[0056] It is understood that the diameter of the first sub-channel 1211 is 1.65 mm, and the diameter of the second sub-channel 1212 is not limited to 4.7 mm to 4.9 mm. For example, the diameter of the first sub-channel 1211 is 1.65 mm, and the diameter of the second sub-channel 1212 is greater than 4.9 mm, or the diameter of the second sub-channel 1212 is less than 4.7 mm.

[0057] It is understood that the diameter of the first sub-channel 1211 is not limited to 1.65 mm. For example, the diameter of the first sub-channel 1211 is greater than 1.65 mm.

[0058] For example, the diameter of the first sub-channel 1211 is 2 mm, and the diameter of the second sub-channel 1212 is 5.9 mm, 6 mm or 6.1 mm.

[0059] In some embodiments, please refer to Figures 1-3 The projection area of ​​the first sub-channel 1211 is located within the projection area of ​​all sub-channels except the first sub-channel 1211.

[0060] In this embodiment, the projection area of ​​the first sub-channel 1211 along the axial direction is located within the projection area of ​​all sub-channels except the first sub-channel 1211. Among all sub-channels, the first sub-channel 1211 has the smallest flow area, the refrigerant has the highest flow velocity in the first sub-channel 1211, the refrigerant has a relatively lower flow velocity in the other sub-channels except the first sub-channel 1211, and the refrigerant has a relatively gentle flow velocity in the preset channel 121.

[0061] It is understood that, when projected along the axial direction of the first sub-channel 1211, the projection area of ​​the first sub-channel 1211 is not limited to the projection areas of all other sub-channels besides the first sub-channel 1211. For example, when projected along the axial direction of the first sub-channel 1211, the projection area of ​​one of the sub-channels besides the first sub-channel 1211 and the second sub-channel 1212 is located within the projection area of ​​the first sub-channel 1211.

[0062] In some embodiments, please refer to Figures 1-3 One of the sub-channels is the third sub-channel 1213, which is located on the side of the first sub-channel 1211 away from the second sub-channel 1212.

[0063] In this embodiment of the application, one of the sub-channels is the third sub-channel 1213, which is located on the side of the first sub-channel 1211 away from the second sub-channel 1212. The first sub-channel 1211 has the second sub-channel 1212 and the third sub-channel 1213 respectively arranged on both sides along the axial direction. The refrigerant can flow from the third sub-channel 1213 through the first sub-channel 1211 to the second sub-channel 1212, and the refrigerant can also flow from the second sub-channel 1212 through the first sub-channel 1211 to the third sub-channel 1213. This is beneficial for the throttling expansion valve 1 to achieve throttling expansion of the refrigerant in both directions.

[0064] It is understood that the throttling expansion valve 1 may not have a third sub-flow channel 1213. Exemplarily, the throttling expansion valve 1 has only a first sub-flow channel 1211 and a second sub-flow channel 1212.

[0065] It is understood that the third sub-channel 1213 is not limited to being located on the side of the first sub-channel 1211 away from the second sub-channel 1212. Exemplarily, the third sub-channel 1213 is located on the side of the second sub-channel 1212 away from the first sub-channel 1211.

[0066] In some embodiments, please refer to Figures 1-3 The regulator 13 includes an adjustment body 132 and an actuator 133. The adjustment body 132 is installed inside the housing 11, and the actuator 133 is disposed on the adjustment body 132. An adjustment part 131 is formed on the actuator 133 and is projected along the axial direction of the first sub-channel 1211. The projection area of ​​the actuator 133 is located within the projection area of ​​the first sub-channel 1211 so that the actuator 133 moves into or out of the first sub-channel 1211.

[0067] In this embodiment, the adjustment part 131 is located on the actuator 133 and is projected along the axial direction of the first sub-flow channel 1211. The projection area of ​​the actuator 133 is located within the projection area of ​​the first sub-flow channel 1211 so that the actuator 133 can move into or out of the first sub-flow channel 1211. The actuator 133 cooperates with the first sub-flow channel 1211 to adjust the flow rate. The adjustment body 132 drives the actuator 133 to move. The adjustment body 132 is not limited by the first sub-flow channel 1211.

[0068] It is understood that the regulator 13 includes, but is not limited to, an adjustment body 132 and an actuator 133. Exemplarily, the regulator 13 does not include an actuator 133, and the adjustment section 131 is formed with the adjustment body 132.

[0069] In some embodiments, please refer to Figures 1-3 The air conditioner also includes a shut-off valve 6 and at least two one-way throttling valves 7, one of which is connected in series between the throttling expansion valve 1 and the outdoor heat exchanger 4, and the shut-off valve 6 and the other one-way throttling valve 7 are connected in series between the throttling expansion valve 1 and the indoor heat exchanger 3.

[0070] It should be noted that the one-way throttle valve 7 is composed of a one-way valve and a throttle valve connected in parallel. It is used in circuits where flow control is required in one direction while the flow path needs to be unobstructed in the other direction (reverse direction), so as to achieve adjustable speed of the actuator in the forward direction and rapid retraction in the reverse direction. Refrigerant can flow from one valve port of the one-way throttle valve 7 to the other valve port, or in the reverse direction.

[0071] In this embodiment of the application, when the refrigerant flows through the one-way throttle valve 7 and the throttle expansion valve 1 in sequence, the one-way throttle valve 7 throttles and reduces the pressure of the refrigerant, converting the refrigerant into liquid refrigerant. The throttle expansion valve 1 can be used only to regulate the refrigerant flow rate, throttle and reduce the pressure of the refrigerant before it enters the throttle expansion valve 1, thereby reducing the refrigerant pressure and the possibility of the refrigerant impacting the throttle expansion valve 1.

[0072] It is understood that air conditioners are not limited to having a one-way throttling valve 7. For example, an air conditioner may not have a one-way throttling valve 7, and the throttling expansion valve 1 may throttle and reduce the pressure of the refrigerant.

[0073] It is understood that the number of one-way throttle valves 7 is not limited to at least two. For example, the number of one-way throttle valves 7 is one.

[0074] In some embodiments, please refer to Figures 1-5 The air conditioner also includes a controller, a refrigerant pipe 10, a heat exchange pipe 8, and a radiator 9. The refrigerant pipe 10 connects one end of the heat exchange pipe 8 to one end of the throttling expansion valve 1. One of the one-way throttling valves 7 connects the other end of the heat exchange pipe 8 to the outdoor heat exchanger 4. The heat exchange pipe 8 is installed on the radiator 9 to transfer the cooling capacity of the refrigerant to the radiator 9. The radiator 9 is used to dissipate heat from the controller.

[0075] In this embodiment, when the air conditioner is cooling, the high-temperature refrigerant flowing out of the compressor 2 flows into the outdoor heat exchanger 4 through the four-way valve 5. The refrigerant condenses and releases heat on the outdoor heat exchanger 4. The refrigerant flowing out of the outdoor heat exchanger 4 flows through the throttling expansion valve 1 to reduce pressure and is converted into low-temperature refrigerant. The low-temperature refrigerant flows into the heat dissipation pipe 8. The radiator 9 uses the cooling capacity of the low-temperature refrigerant in the heat dissipation pipe 8 to dissipate heat from the controller. The refrigerant flows out of the heat dissipation pipe 8 and flows into the throttling expansion valve 1 through the refrigerant connector 10. It flows from the second sub-channel 1212 of the throttling expansion valve 1 to the first sub-channel 1211. The refrigerant flowing out of the throttling expansion valve 1 flows through the one-way throttling valve 7 and the shut-off valve 6 in sequence and flows into the indoor heat exchanger 3. After the low-temperature refrigerant absorbs heat on the indoor heat exchanger 3 to cool the indoor environment, it flows back to the compressor 2 through the four-way valve 5. The air conditioner uses the low-temperature refrigerant in the cooling process to dissipate heat from the controller, thereby improving the controller's heat dissipation efficiency.

[0076] In the description of this application, the terms "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine different embodiments or examples described in this application, as well as features of different embodiments or examples.

[0077] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A throttling expansion valve, characterized in that, include: case; A valve body is connected within the housing. The valve body has a preset flow channel for supplying refrigerant. The preset flow channel extends through the valve body and includes at least two sub-flow channels, one of which is a first sub-flow channel and the other of which is a second sub-flow channel adjacent to the first sub-flow channel. An adjuster is installed inside the housing. The adjuster has an adjusting part. The second sub-channel is located on the side of the first sub-channel facing the adjuster along the axial direction of the first sub-channel. The adjuster is used to drive the adjusting part to move closer to or further away from the first sub-channel along the axial direction of the first sub-channel to adjust the opening of the first sub-channel. A plane parallel to the axial direction of the first sub-channel is a preset plane. The intersection line formed by the preset plane and the inner surface of the second sub-channel is a straight line.

2. The throttling expansion valve according to claim 1, characterized in that, Both the first sub-channel and the second sub-channel have circular cross-sectional shapes.

3. The throttling expansion valve according to claim 2, characterized in that, The diameter of the second sub-channel is larger than the diameter of the first sub-channel.

4. The throttling expansion valve according to claim 3, characterized in that, The diameter of the first sub-channel is 1.65 mm, and the diameter of the second sub-channel is 4.7 mm to 4.9 mm.

5. The throttling expansion valve according to any one of claims 1 to 4, characterized in that, Projecting along the axial direction of the first sub-channel, the projection area of ​​the first sub-channel is located within the projection areas of all the other sub-channels except the first sub-channel.

6. The throttling expansion valve according to claim 5, characterized in that, One of the sub-channels is a third sub-channel, which is located on the side of the first sub-channel away from the second sub-channel.

7. The throttling expansion valve according to any one of claims 1 to 4, characterized in that, The regulator includes: The adjustment body is installed inside the housing; An actuator is disposed on the adjustment body, and an adjustment part is formed on the actuator. The actuator is projected along the axial direction of the first sub-channel, and the projection area of ​​the actuator is located within the projection area of ​​the first sub-channel so that the actuator can move into or out of the first sub-channel.

8. An outdoor unit, characterized in that, include: Host; The throttling expansion valve according to any one of claims 1 to 7 is disposed on the main unit.

9. An air conditioner, characterized in that, The device includes a throttling expansion valve, a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a four-way valve as described in any one of claims 1 to 7, wherein the indoor heat exchanger and the outdoor heat exchanger are respectively connected to the four-way valve, and the refrigerant flowing out of the compressor flows to the indoor heat exchanger or the outdoor heat exchanger through the four-way valve, and the throttling expansion valve is connected in series between the indoor heat exchanger and the outdoor heat exchanger.

10. The air conditioner according to claim 9, characterized in that, The air conditioner also includes a shut-off valve and at least two one-way throttling valves, one of which is connected in series between the throttling expansion valve and the outdoor heat exchanger, and the shut-off valve and the other one-way throttling valve are connected in series between the throttling expansion valve and the indoor heat exchanger.

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