Outdoor unit of air conditioner

Abstract

The utility model discloses an outdoor unit of an air conditioner. The outdoor unit of the air conditioner comprises a machine shell, a separator; a compressor; an outdoor heat exchanger; a fan; an electrical box; the electric appliance box is provided with a heat dissipation air opening. The air conditioner outdoor unit further comprises a first throttling element and a second throttling element, and the first throttling element is connected with the second end of the outdoor heat exchanger. The first end of the cooling heat exchanger is connected with the first throttling element, the cooling heat exchanger is arranged in the compressor cavity and located below the electric appliance box, and air entering the compressor cavity from the air inlet exchanges heat with the cooling heat exchanger and then enters the electric appliance box through the heat dissipation air opening; and the second throttling element is connected with the second end of the cooling heat exchanger, so that the refrigerant can be subjected to secondary throttling. Therefore, the first throttling element can control the surface temperature of the cooling heat exchanger and also can reduce the air inlet temperature of the electric appliance box, so that effective control over the temperature of the electric appliance box can be achieved, meanwhile, the condensation risk is reduced, the second throttling element is arranged and can be used for achieving the designed throttling state of the outdoor unit of the air conditioner, and the service life of the outdoor unit is prolonged. And the outdoor unit of the air conditioner normally operates according to a design state.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to an outdoor unit of an air conditioner. Background Art

[0002] The integration degree of circuit components is getting higher and higher, and the heat generation and heat flux density also increase accordingly. For the electronic control of the outdoor unit of an air conditioner, poor heat dissipation is likely to cause the temperature rise of electrical components to be too high, resulting in poor working stability of the control board and the frequency converter.

[0003] In the prior art, the electronic control heat dissipation solutions mainly include negative pressure air-cooled heat dissipation and refrigerant heat dissipation. Among them, for negative pressure air-cooled heat dissipation, a ventilation port and a heat exchanger are arranged below the electronic control board, and the negative pressure generated when the heat dissipation fan of the outdoor unit of the air conditioner operates is used to drive heat dissipation.

[0004] However, the heat dissipation effect is limited. For refrigerant heat dissipation, through pipeline design, the refrigerant with a lower temperature after condensation is introduced into the electronic control board, but it has higher requirements for the design of the refrigeration system pipeline. In addition, the heat dissipation effect at a higher outdoor ambient temperature is not stable enough. There are also heat dissipation solutions that control the electronic control heat dissipation through a semiconductor refrigerator and by adding an active heat dissipation fan. These heat dissipation solutions introduce additional power supply loads, pose higher requirements for the electronic control of the air conditioner, and have higher costs. Summary of the Utility Model

[0005] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides an outdoor unit of an air conditioner. In this outdoor unit of the air conditioner, the first throttling element can control the surface temperature of the cooling heat exchanger and can also reduce the inlet air temperature of the electrical box, so as to effectively control the temperature of the electrical box and reduce the risk of condensation at the same time. The setting of the second throttling element can be used to achieve the throttling state of the outdoor unit of the air conditioner, so that the outdoor unit of the air conditioner operates normally according to the designed state.

[0006] An outdoor unit of an air conditioner according to an embodiment of the first aspect of the present utility model includes: a housing; a partition plate disposed within the housing, the partition plate dividing the internal space of the housing into a compressor chamber and a blower chamber; a compressor disposed in the compressor chamber; an outdoor heat exchanger disposed in the blower chamber, a first end of the outdoor heat exchanger being connected to the compressor; a blower disposed in the blower chamber to discharge the air after heat exchange with the outdoor heat exchanger to the external environment; an electrical box disposed in the compressor chamber and above the compressor; the housing is provided with an air inlet, the air inlet communicating with the compressor chamber to allow the air in the external environment to enter the compressor chamber through the air inlet; the electrical box is provided with a heat dissipation air inlet, the heat dissipation air inlet communicating with the compressor chamber to allow the air in the compressor chamber to enter the electrical box through the heat dissipation air inlet, and the electrical box is further provided with a heat dissipation air outlet, the heat dissipation air outlet communicating with the blower chamber to allow the air after heat exchange in the electrical box to enter the blower chamber through the heat dissipation air outlet;

[0007] Wherein, the outdoor unit of the air conditioner further includes: a first throttling element connected to a second end of the outdoor heat exchanger to perform primary throttling of the refrigerant; a cooling heat exchanger, a first end of the cooling heat exchanger being connected to the first throttling element, the cooling heat exchanger being disposed in the compressor chamber and below the electrical box, and the air entering the compressor chamber from the air inlet exchanges heat with the cooling heat exchanger and then enters the electrical box through the heat dissipation air inlet to dissipate heat for the electrical box; a second throttling element connected to a second end of the cooling heat exchanger to perform secondary throttling of the refrigerant.

[0008] Thus, in this outdoor unit of the air conditioner, the first throttling element can control the surface temperature of the cooling heat exchanger and also reduce the inlet air temperature of the electrical box, thereby effectively controlling the temperature of the electrical box and reducing the risk of condensation. The setting of the second throttling element can be used to achieve the throttling state of the design of the outdoor unit of the air conditioner, enabling the outdoor unit of the air conditioner to operate normally according to the design state.

[0009] According to some embodiments of the present utility model, the outdoor unit of the air conditioner further includes: a first pipeline connected between a second end of the outdoor heat exchanger and a first end of the cooling heat exchanger, the first throttling element being disposed in the first pipeline; a stop valve disposed in the housing; a second pipeline connected between a second end of the cooling heat exchanger and the stop valve, the second throttling element being disposed in the second pipeline.

[0010] According to some embodiments of the present utility model, a first end of the cooling heat exchanger is higher than a second end of the cooling heat exchanger.

[0011] According to some embodiments of the present utility model, the first end and the second end of the cooling heat exchanger are arranged away from the partition board.

[0012] According to some embodiments of the present utility model, the cooling heat exchanger is arranged on the side wall of the casing, and the cooling heat exchanger is arranged opposite to the air inlet, so that the air at the air inlet exchanges heat with the cooling heat exchanger and then enters the compressor chamber.

[0013] According to some embodiments of the present utility model, the area of the air inlet is S1, and the area of the surface of the cooling heat exchanger facing the air inlet is S2. S1 and S2 satisfy the relationship: 0.75S2 ≤ S1 ≤ S2.

[0014] According to some embodiments of the present utility model, the casing includes: a front panel; a side plate, the side plate is connected to the front panel; a rear panel, the rear panel is arranged opposite to the front panel, the rear panel and the side plate are integrally arranged, and the air inlet is arranged on the rear panel.

[0015] According to some embodiments of the present utility model, the outdoor air conditioner further includes: a mounting plate, the outdoor heat exchanger is provided with an end plate, and the mounting plate is connected between the end plate and the cooling heat exchanger to mount the cooling heat exchanger on the outdoor heat exchanger.

[0016] According to some embodiments of the present utility model, the mounting plate includes: a first plate body, the first plate body is connected to the end plate; a second plate body, the second plate body is connected to the cooling heat exchanger, the second plate body is parallel to the first plate body, and the second plate body and the cooling heat exchanger are attached to the side wall of the casing; a third plate body, the third plate body is connected between the first plate body and the second plate body, and the third plate body is perpendicular to the first plate body and the second plate body respectively.

[0017] An outdoor unit of an air conditioner according to a second aspect embodiment of the present utility model includes: a housing; a partition board, the partition board is arranged inside the housing, and the partition board divides the internal space of the housing into a compressor chamber and a fan chamber; a compressor, the compressor is arranged in the compressor chamber; an outdoor heat exchanger, the outdoor heat exchanger is arranged in the fan chamber, and a first end of the outdoor heat exchanger is connected to the compressor; a fan, the fan is arranged in the fan chamber to discharge the air after heat exchange with the outdoor heat exchanger to the external environment; an electrical box, the electrical box is arranged in the compressor chamber and above the compressor; the housing is provided with an air inlet, and the air inlet is communicated with the compressor chamber so that the air in the external environment enters the compressor chamber through the air inlet; the electrical box is provided with a heat dissipation air inlet, and the heat dissipation air inlet is communicated with the compressor chamber so that the air in the compressor chamber enters the electrical box through the heat dissipation air inlet, and the electrical box is further provided with a heat dissipation air outlet, and the heat dissipation air outlet is communicated with the fan chamber so that the air after heat exchange of the electrical box enters the fan chamber through the heat dissipation air outlet; wherein, the outdoor unit of the air conditioner further includes: a cooling heat exchanger, the cooling heat exchanger is connected to a second end of the outdoor heat exchanger, and the cooling heat exchanger is arranged in the compressor chamber; a first throttling element, the first throttling element is connected to the second end of the outdoor heat exchanger to throttle the refrigerant once; a second throttling element, the second throttling element is connected to the second end of the cooling heat exchanger to throttle the refrigerant twice.

[0018] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0019] The above and / or additional aspects and advantages of the present utility model will become apparent and be easily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0020] Figure 1 is a schematic structural diagram of an outdoor unit of an air conditioner according to an embodiment of the present utility model;

[0021] Figure 2 is a schematic structural diagram of an outdoor unit of an air conditioner according to an embodiment of the present utility model with a partition board;

[0022] Figure 3 is a schematic internal structural diagram of an outdoor unit of an air conditioner according to an embodiment of the present utility model;

[0023] Figure 4 is Figure 3 an enlarged view of area A in

[0024] Figure 5Schematic diagram of the outdoor unit of an air conditioner according to an embodiment of the present utility model, which includes a cooling heat exchanger;

[0025] Figure 6 Schematic diagram of the outdoor unit of an air conditioner according to an embodiment of the present utility model, which includes a first throttling element and a second throttling element;

[0026] Figure 7 Schematic diagram of the structure where the cooling heat exchanger is located below the electrical box according to an embodiment of the present utility model;

[0027] Figure 8 Is Figure 7 Enlarged view of area B in

[0028] Figure 9 Exploded view of the side plate and the casing according to an embodiment of the present utility model;

[0029] Figure 10 Schematic diagram of the internal structure of the side plate according to an embodiment of the present utility model;

[0030] Figure 11 Schematic diagram of the side plate according to an embodiment of the present utility model;

[0031] Figure 12 Schematic diagram of the mounting plate according to an embodiment of the present utility model;

[0032] Figure 13 Schematic diagram of the system principle of the outdoor unit of an air conditioner according to an embodiment of the present utility model.

[0033] Reference numerals:

[0034] 100, Outdoor unit of an air conditioner;

[0035] 10, Casing; 11, Air inlet; 12, Panel; 13, Side plate; 14, Back plate;

[0036] 20, Partition; 21, Compressor chamber; 22, Fan chamber;

[0037] 30, Compressor;

[0038] 40, Outdoor heat exchanger; 41, End plate;

[0039] 50, Fan;

[0040] 60, Electrical box; 61, Heat dissipation air inlet; 62, Heat dissipation air outlet;

[0041] 70, Cooling heat exchanger;

[0042] 71, First throttling element; 72, Second throttling element;

[0043] 80. Mounting plate; 81. First plate body; 82. Second plate body; 83. Third plate body;

[0044] 91. First pipeline;

[0045] 92. Stop valve; 93. Second pipeline; 94. First end of the cooling heat exchanger; 95. Second end of the cooling heat exchanger. Detailed implementation manner

[0046] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0047] Reference will be made below to Figures 1-13 Describe the outdoor unit 100 of an air conditioner according to an embodiment of the present invention.

[0048] Refer to Figures 1-5 As shown, the outdoor unit 100 of an air conditioner according to the first aspect embodiment of the present invention includes: a housing 10, a partition 20, a compressor 30, an outdoor heat exchanger 40, a fan 50, and an electrical box 60.

[0049] The partition 20 is disposed inside the housing 10. The partition 20 divides the internal space of the housing 10 into a compressor chamber 21 and a fan chamber 22. The arrangement of the partition 20 can reduce the noise of the compressor 30 from spreading to the external environment, so that the outdoor unit 100 of the air conditioner can be more silent during operation. Moreover, by dividing the internal space of the housing 10 into a compressor chamber 21 and a fan chamber 22 through the partition 20, it is possible to prevent heat interference between the compressor 30 and the fan 50, and it is also possible to ensure their respective working efficiencies, thereby improving the overall performance of the outdoor unit 100 of the air conditioner.

[0050] The compressor 30 is disposed in the compressor chamber 21, the outdoor heat exchanger 40 is disposed in the fan chamber 22, the first end of the outdoor heat exchanger 40 is connected to the compressor 30, and the compressor 30 and the outdoor heat exchanger 40 perform heat exchange through a refrigerant. The compressor 30 compresses and heats the refrigerant, and then dissipates heat and cools it through the outdoor heat exchanger 40, thereby completing the heat exchange process in the refrigeration cycle.

[0051] The fan 50 is disposed in the fan chamber 22. The fan 50 can discharge the air that has completed heat exchange in the outdoor heat exchanger 40 to the external environment. The electrical box 60 is disposed in the compressor chamber 21. The compression chamber can provide an independent installation space for the compressor 30, which can play a protective role for the compressor 30 and prevent damage to the compressor 30 by external factors such as dust, sand, and rain.

[0052] The electrical box 60 is located above the compressor 30, which can better protect the electrical box 60 from the influence of the external environment, such as rain, dust, etc. This can improve the reliability and durability of the electrical box 60, and also reduce the risk of failures caused by external environmental factors.

[0053] The housing 10 is provided with an air inlet 11, and the air inlet 11 is communicated with the compressor chamber 21, so that the air in the external environment can enter the compressor chamber 21 through the air inlet 11.

[0054] Furthermore, the electrical box 60 is provided with a heat dissipation air inlet 61, and the heat dissipation air inlet 61 is communicated with the compressor chamber 21, so that the air in the compression chamber can enter the interior of the electrical box 60 through the heat dissipation air inlet 61, and this can dissipate heat from the control circuit board in the electrical box 60.

[0055] The electrical box 60 is also provided with a heat dissipation air outlet 62, and the heat dissipation air outlet 62 is communicated with the fan chamber 22, so that the air after heat exchange in the electrical box 60 can enter the fan chamber 22 through the heat dissipation air outlet 62. The high-speed rotation of the fan 50 in the fan chamber 22 can quickly discharge the air in the fan chamber 22, and it is easy to generate negative pressure in the fan chamber 22.

[0056] Since the heat dissipation air inlet 61 is communicated with the compressor chamber 21 and the fan chamber 22 is communicated with the heat dissipation air outlet 62, this can make the fan chamber 22 communicated with the compressor chamber 21, so that the air in the compressor chamber 21 can be quickly discharged, which can facilitate the formation of negative pressure in the compressor chamber 21, and thus can accelerate the air intake speed of the air inlet 11.

[0057] Specifically, the air in the external environment enters the compressor chamber 21 through the air inlet 11, which can dissipate heat from the compressor 30 and the electrical box 60 in the compressor chamber 21, thereby reducing the temperature of its surrounding environment. Furthermore, the setting of the heat dissipation air inlet 61 of the electrical box 60 can make the air in the compression chamber enter the interior of the electrical box 60 through the heat dissipation air inlet 61, and this can dissipate heat from the control circuit board in the electrical box 60.

[0058] Among them, the outdoor unit 100 of the air conditioner further includes: a first throttling element 71, and the first throttling element 71 is connected to the second end of the outdoor heat exchanger 40, so that the refrigerant can be throttled once.

[0059] The outdoor unit 100 of the air conditioner further includes: a cooling heat exchanger 70, and the first end 94 of the cooling heat exchanger is connected to the first throttling element 71. Under the refrigeration condition, the medium-temperature refrigerant throttled by the first throttling element 71 flows through the cooling heat exchanger 70, so that the first throttling element 71 can control the surface temperature of the cooling heat exchanger 70, and can also reduce the air intake temperature of the electrical box 60, thereby effectively controlling the temperature of the electrical box 60 and reducing the risk of condensation at the same time.

[0060] The cooling heat exchanger 70 is disposed within the compressor chamber 21, and the cooling heat exchanger 70 is located below the electrical box 60. The air entering the compressor chamber 21 from the air inlet 11 exchanges heat with the cooling heat exchanger 70 and then enters the electrical box 60 through the heat dissipation air inlet 61, thereby being able to dissipate heat for the electrical box 60.

[0061] The incoming air enters from the air inlet 11. This air inlet 11 can increase the efficiency of the cooling air entering the compressor chamber 21. The air cooled by the cooling heat exchanger 70 flows through the heat dissipation position of the electrical box 60 via the negative pressure air-cooled heat dissipation channel, enabling effective control of the temperature of the electrical box 60. Moreover, it has a significant cooling effect under high-temperature working conditions.

[0062] The outdoor unit 100 of the air conditioner further includes: a second throttling element 72. The second throttling element 72 is connected to the second end 95 of the cooling heat exchanger, thereby enabling the refrigerant to undergo secondary throttling. At this time, the temperature of the refrigerant is lower than the outdoor dry-bulb temperature but higher than the dew point temperature corresponding to this dry-bulb temperature, so condensation does not occur. The medium-temperature refrigerant enters the second throttling element 72 through the cooling heat exchanger 70 for secondary throttling. The setting of the second throttling element 72 can be used to achieve the throttling state designed for the outdoor unit 100 of the air conditioner, enabling the outdoor unit 100 of the air conditioner to operate normally according to the designed state.

[0063] Thus, in the outdoor unit 100 of the air conditioner, the first throttling element 71 can control the surface temperature of the cooling heat exchanger 70 and also reduce the incoming air temperature of the electrical box 60, thereby enabling effective control of the temperature of the electrical box 60 and simultaneously reducing the risk of condensation. The setting of the second throttling element 72 can be used to achieve the throttling state designed for the outdoor unit 100 of the air conditioner, enabling the outdoor unit 100 of the air conditioner to operate normally according to the designed state.

[0064] According to some embodiments of the present invention, as Figure 2 and Figure 3 shown, the outdoor unit 100 of the air conditioner further includes: a first pipeline 91. The first pipeline 91 is connected between the second end of the outdoor heat exchanger 40 and the first end 94 of the cooling heat exchanger, which is conducive to heat transfer and dissipation, thereby improving the overall heat dissipation efficiency.

[0065] Connecting the first pipeline 91 between the second end of the outdoor heat exchanger 40 and the first end 94 of the cooling heat exchanger can achieve more precise temperature control in the air conditioning system, enabling heat to be more effectively regulated and utilized, which is conducive to improving the performance and efficiency of the system.

[0066] Furthermore, the first pipeline 91 is provided with a first throttling element 71. The first throttling element 71 can effectively control the flow rate and flow volume of the fluid and is also conducive to optimizing the working state of the system, ensuring the stable flow of the fluid in the pipeline.

[0067] The outdoor unit 100 of the air conditioner further includes: a stop valve 92, which is arranged on the housing 10. Among them, the stop valve 92 can adjust or completely close the flow of the refrigerant in the air-conditioning system, which is crucial for maintaining the refrigeration effect and operating efficiency of the system. By adjusting the stop valve 92, the flow rate of the refrigerant and the pressure in the air-conditioning system can be controlled, so as to ensure that the air-conditioning system operates under safe and effective working conditions.

[0068] The outdoor unit 100 of the air conditioner further includes: a second pipeline 93, which is connected between the second end 95 of the cooling heat exchanger and the stop valve 92, and a second throttling element 72 is arranged on the second pipeline 93.

[0069] Among them, the position of the second pipeline 93 where the cooling heat exchanger 70 is located is between the outlet of the throttling valve (or electronic expansion valve) of the refrigeration circuit and the fine valve of the stop valve 92. After the refrigerant temperature at the outlet of the throttling valve of the refrigeration circuit is throttled by the second throttling element 72, it is significantly reduced. After the outside air passes through the cooling heat exchanger 70, it can be effectively cooled and enter the compressor chamber 21. As the main cold source for negative pressure air-cooled heat dissipation, the reduction of its temperature can significantly improve the heat dissipation effect of the electrical box 60.

[0070] In addition, the second throttling element 72 can also effectively control the flow rate and flow of the fluid, which is also beneficial to optimizing the working state of the system and ensuring the stable flow of the fluid in the pipeline.

[0071] According to some embodiments of the present invention, such as Figure 8 shown, the first end 94 of the cooling heat exchanger is higher than the second end 95 of the cooling heat exchanger, which can enable the refrigerant to absorb heat, so as to effectively cool the indoor air and provide a comfortable temperature.

[0072] According to some embodiments of the present invention, such as Figure 2 and Figure 8 shown, the first end 94 of the cooling heat exchanger and the second end 95 of the cooling heat exchanger are arranged away from the partition plate 20.

[0073] In this way, the distance between the first end 94 of the cooling heat exchanger and the second end 95 of the cooling heat exchanger and the electrical box 60 can be reduced. The cold air after the cooling heat exchanger 70 completes heat exchange can be arranged around the electrical box 60, which can reduce the temperature at the electrical box 60, so as to improve the heat dissipation efficiency of the cooling heat exchanger 70 for the electrical box 60, and can also avoid interference between the first end 94 of the cooling heat exchanger and the second end 95 of the cooling heat exchanger and the partition plate 20.

[0074] According to some embodiments of the present invention, such as Figure 5As shown in the figure, the cooling heat exchanger 70 is arranged on the side wall of the casing 10. By reasonably utilizing the space inside the outdoor unit 100 of the air conditioner, an installation position can be provided for the cooling heat exchanger 70, making the internal structure of the outdoor unit 100 of the air conditioner more compact.

[0075] The cooling heat exchanger 70 is arranged opposite to the air inlet 11, which can effectively utilize air convection and enhance the heat dissipation effect. When air enters from the air inlet 11 and passes through the cooling heat exchanger 70, part of the heat is carried away, thereby improving the heat dissipation effect of the cooling heat exchanger 70 and enabling the air at the air inlet 11 to enter the compressor chamber 21 after exchanging heat with the cooling heat exchanger 70.

[0076] According to some embodiments of the present invention, as Figure 5 shown, the area of the air inlet 11 is S1, and the area of the surface of the cooling heat exchanger 70 facing the air inlet 11 is S2. S1 and S2 satisfy the relationship: 0.75S2 ≤ S1 ≤ S2.

[0077] Among them, the area S1 of the air inlet 11 is not less than 0.75 times the area S2 of the surface of the cooling heat exchanger 70 facing the air inlet 11. That is to say, the area S1 of the air inlet 11 cannot be too small compared with the area S2 of the surface of the cooling heat exchanger 70 facing the air inlet 11. If the area S1 of the air inlet 11 is too small compared with the area S2 of the surface of the cooling heat exchanger 70 facing the air inlet 11, it will affect the air intake volume and the heat exchange efficiency of the cooling heat exchanger 70. Therefore, the area S1 of the air inlet 11 is set not less than 0.75 times the area S2 of the surface of the cooling heat exchanger 70 facing the air inlet 11.

[0078] Preferably, the area S1 of the air inlet 11 is not less than 0.8 times the area S2 of the surface of the cooling heat exchanger 70 facing the air inlet 11. In this way, the air intake volume is large, the heat exchange effect of the cooling heat exchanger 70 is obvious, and more cold air is generated at the electrical box 60, so that the temperature at the electrical box 60 can be lower.

[0079] More preferably, the area S1 of the air inlet 11 is not less than 0.9 times the area S2 of the surface of the cooling heat exchanger 70 facing the air inlet 11. In this way, the air intake volume is even larger, the heat exchange effect of the cooling heat exchanger 70 is more obvious, and more cold air is generated at the electrical box 60, so that the temperature at the electrical box 60 can be even lower.

[0080] In addition, the area S1 of the air inlet 11 is not greater than the area S2 of the surface of the cooling heat exchanger 70 facing the air inlet 11. That is to say, the area S1 of the air inlet 11 should not be too large compared with the area S2 of the surface of the cooling heat exchanger 70 facing the air inlet 11. If the area S1 of the air inlet 11 is too large compared with the area S2 of the surface of the cooling heat exchanger 70 facing the air inlet 11, the air at the air inlet 11 will spread, and less air will reach the cooling heat exchanger 70, affecting the heat exchange efficiency of the cooling heat exchanger 70. Therefore, the area S1 of the air inlet 11 is set not to be greater than the area S2 of the surface of the cooling heat exchanger 70 facing the air inlet 11.

[0081] Preferably, the area S1 of the air inlet 11 is not greater than 0.9 times the area S2 of the surface of the cooling heat exchanger 70 facing the air inlet 11. In this way, the area S1 of the air inlet 11 is relatively small, so that more air at the air inlet 11 can reach the cooling heat exchanger 70, and thus the heat exchange effect of the cooling heat exchanger 70 can be better.

[0082] More preferably, the area S1 of the air inlet 11 is not greater than 0.8 times the area S2 of the surface of the cooling heat exchanger 70 facing the air inlet 11. In this way, the area S1 of the air inlet 11 is even smaller, so that more air at the air inlet 11 can reach the cooling heat exchanger 70, and thus the heat exchange effect of the cooling heat exchanger 70 can be even better.

[0083] According to some embodiments of the present invention, as Figure 1 and Figure 5 shown, the housing 10 includes: a front panel 12, the front panel 12 is located on the front of the outdoor unit 100 of the air conditioner. The housing 10 further includes: side plates 13, the side plates 13 are connected to the front panel 12, and the side plates 13 are respectively located on both sides of the front panel 12. The housing 10 further includes: a rear panel 14, the rear panel 14 is disposed opposite to the front panel 12, and the rear panel 14 is integrally provided with the side plates 13, which can increase the stability and firmness of the overall structure of the outdoor unit 100 of the air conditioner, can also reduce the connection points between components, and can also reduce the risk of loosening or breaking.

[0084] In addition, the rear panel 14 is provided with an air inlet 11, which can facilitate the delivery of air to the cooling heat exchanger 70, thereby facilitating the heat exchange of the cooling heat exchanger 70, can also increase the air flow, contribute to heat dissipation, and thus can improve the heat dissipation effect of the outdoor unit 100 of the air conditioner.

[0085] The setting of the air inlet 11 can increase the ventilation effect of the outdoor unit 100 of the air conditioner, can also reduce the temperature inside the outdoor unit 100 of the air conditioner, and improve the performance and stability of the outdoor unit 100 of the air conditioner. In a high-temperature environment, the air inlet 11 can prevent the outdoor unit 100 of the air conditioner from overheating and maintain a stable working state.

[0086] According to some embodiments of the present invention, asFigure 7 and Figure 12 As shown in Figure 12 , the outdoor unit 100 of the air conditioner further includes: a mounting plate 80. The outdoor heat exchanger 40 is provided with an end plate 41. The mounting plate 80 is connected between the end plate 41 and the cooling heat exchanger 70, so that the cooling heat exchanger 70 can be mounted on the outdoor heat exchanger 40.

[0087] Among them, the provision of the end plate 41 facilitates the connection between the outdoor heat exchanger 40 and the mounting plate 80. The mounting plate 80 can provide a supporting function for the mounting of the cooling heat exchanger 70, so that the connection between the cooling heat exchanger 70 and the outdoor heat exchanger 40 can be more stable and firm.

[0088] Furthermore, a part of the end plate 41 extends, which can be used to determine the height limit of the cooling heat exchanger 70. The two sides of the cooling heat exchanger 70 are fixed to the side plate 13 by using right-angle end plates 41, which can make the outer surface of the heat exchanger closely fit on the surface of the side plate 13, avoiding gaps between the cooling heat exchanger 70 and the notch of the side plate 13, thus affecting the heat dissipation effect.

[0089] In addition, a water receiving tray and a diversion groove are synchronously added to the end plate 41 for fixing the cooling heat exchanger 70. The condensed water is collected in the water receiving tray and then flows to the diversion groove, and then is introduced into the base of the housing 10 through the diversion groove for centralized discharge. This can avoid damage and interference to sensors and electrical components caused by the random flow of condensed water, and can also improve the operating reliability of the outdoor unit 100 of the air conditioner.

[0090] According to some embodiments of the present invention, as Figure 12 shown, the mounting plate 80 includes: a first plate body 81. The first plate body 81 is connected to the end plate 41, which can increase the contact area between the first plate body 81 and the end plate 41, thus increasing the connection strength between the first plate body 81 and the end plate 41.

[0091] The mounting plate 80 further includes: a second plate body 82. The second plate body 82 is connected to the cooling heat exchanger 70, which can increase the contact area with the cooling heat exchanger 70, thus increasing the connection strength between the second plate body 82 and the cooling heat exchanger 70.

[0092] The second plate body 82 is parallel to the first plate body 81. The second plate body 82 and the cooling heat exchanger 70 are attached to the side wall of the housing 10, so as to further improve the heat exchange effect of the cooling heat exchanger 70.

[0093] The mounting plate 80 further includes: a third plate body 83. The third plate body 83 is connected between the first plate body 81 and the second plate body 82. The third plate body 83 is perpendicular to the first plate body 81 and the second plate body 82 respectively, so as to facilitate the fixed connection between the first plate body 81 and the second plate body 82.

[0094] In addition, the first plate body 81, the second plate body 82, and the third plate body 83 in the mounting plate 80 are integrally formed, which can ensure a more secure connection between the first plate body 81, the second plate body 82, and the third plate body 83, and a higher overall structural strength, thereby improving the durability and reliability of the mounting plate 80. It can also avoid additional connecting components such as screws and welding points, which can reduce the risk of connection failure and potential failure points.

[0095] The outdoor unit 100 of the air conditioner according to the second aspect embodiment of the present utility model includes: a housing 10, a partition 20, a compressor 30, an outdoor heat exchanger 40, a fan 50, and an electrical box 60.

[0096] The partition 20 is disposed inside the housing 10. The partition 20 divides the internal space of the housing 10 into a compressor chamber 21 and a fan chamber 22. The compressor 30 is disposed in the compressor chamber 21, the outdoor heat exchanger 40 is disposed in the fan chamber 22. The first end of the outdoor heat exchanger 40 is connected to the compressor 30. The fan 50 is disposed in the fan chamber 22, so that the air heat-exchanged with the outdoor heat exchanger 40 can be discharged to the external environment. The electrical box 60 is disposed in the compressor chamber 21 and above the compressor 30. The housing 10 is provided with an air inlet 11, and the air inlet 11 communicates with the compressor chamber 21, so that the air in the external environment can enter the compressor chamber 21 through the air inlet 11.

[0097] Specifically, the partition 20 is disposed inside the housing 10. The partition 20 divides the internal space of the housing 10 into a compressor chamber 21 and a fan chamber 22. The setting of the partition 20 can reduce the noise of the compressor 30 from spreading to the external environment, so that the outdoor unit 100 of the air conditioner is more silent during operation. Moreover, by dividing the internal space of the housing 10 into a compressor chamber 21 and a fan chamber 22 by the partition 20, it is possible to prevent heat interference between the compressor 30 and the fan 50, and it is also possible to ensure their respective working efficiencies, thereby improving the overall performance of the outdoor unit 100 of the air conditioner.

[0098] The compressor 30 is disposed in the compressor chamber 21, the outdoor heat exchanger 40 is disposed in the fan chamber 22. The first end of the outdoor heat exchanger 40 is connected to the compressor 30. The compressor 30 and the outdoor heat exchanger 40 perform heat exchange through a refrigerant. The compressor 30 compresses and heats the refrigerant, and then dissipates heat and cools down through the outdoor heat exchanger 40, thereby completing the heat exchange process in the refrigeration cycle.

[0099] The fan 50 is disposed in the fan chamber 22. The fan 50 can discharge the air that has completed heat exchange with the outdoor heat exchanger 40 to the external environment. The electrical box 60 is disposed in the compressor chamber 21. The compression chamber can provide an independent installation space for the compressor 30, which can protect the compressor 30 and prevent damage to the compressor 30 by external factors such as dust, sand, and rain.

[0100] The electrical box 60 is located above the compressor 30, which can better protect the electrical box 60 from the influence of the external environment, such as rain, dust, etc. This can improve the reliability and durability of the electrical box 60, and also reduce the risk of failures caused by external environmental factors.

[0101] The housing 10 is provided with an air inlet 11, and the air inlet 11 is communicated with the compressor chamber 21, so that the wind in the external environment can enter the compressor chamber 21 through the air inlet 11. The electrical box 60 is provided with a heat dissipation air inlet 61, and the heat dissipation air inlet 61 is communicated with the compressor chamber 21, so that the wind in the compressor chamber 21 can enter the electrical box 60 through the heat dissipation air inlet 61. The electrical box 60 is further provided with a heat dissipation air outlet 62, and the heat dissipation air outlet 62 is communicated with the fan chamber 22, so that the air after heat exchange in the electrical box 60 can enter the fan chamber 22 through the heat dissipation air outlet 62.

[0102] Specifically, the wind in the external environment enters the compressor chamber 21 through the air inlet 11, which can dissipate heat from the compressor 30 and the electrical box 60 in the compressor chamber 21, thereby reducing the temperature of its surrounding environment. Further, the setting of the heat dissipation air inlet 61 of the electrical box 60 enables the wind in the compression chamber to enter the interior of the electrical box 60 through the heat dissipation air inlet 61, which can dissipate heat from the control circuit board in the electrical box 60.

[0103] Among them, the outdoor unit 100 of the air conditioner further includes: a cooling heat exchanger 70, the cooling heat exchanger 70 is connected to the second end of the outdoor heat exchanger 40, and the cooling heat exchanger 70 is arranged in the compressor chamber 21, which can play a role in transferring the refrigerant, and can send the refrigerant from the outdoor heat exchanger 40 to the indoor heat exchanger, thereby realizing the refrigeration cycle in the air conditioning system.

[0104] Such as Figure 13 shown, the outdoor unit 100 of the air conditioner further includes: a first throttling element 71, the first throttling element 71 is connected to the second end of the outdoor heat exchanger 40, so that the refrigerant can be throttled once. Under the refrigeration condition, the medium-temperature refrigerant throttled by the first throttling element 71 flows through the cooling heat exchanger 70, which can control the surface temperature of the cooling heat exchanger 70, and also reduce the inlet air temperature of the electrical box 60, thereby effectively controlling the temperature of the electrical box 60 and reducing the risk of condensation at the same time.

[0105] Such as Figure 13 shown, a second throttling element 72, the second throttling element 72 is connected to the second end 95 of the cooling heat exchanger, so that the refrigerant can be throttled twice.

[0106] At this time, the temperature of the refrigerant is lower than the outdoor dry-bulb temperature but higher than the dew-point temperature corresponding to the dry-bulb temperature, so condensation will not occur. The medium-temperature refrigerant enters the second throttling element 72 after passing through the cooling heat exchanger 70 for secondary throttling. The setting of the second throttling element 72 can be used to achieve the throttling state designed for the outdoor unit 100 of the air conditioner, so that the outdoor unit 100 of the air conditioner operates normally according to the designed state.

[0107] In the description of the present invention, 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", "clockwise", "counterclockwise", "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 invention 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 invention.

[0108] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. 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 invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0109] Although the embodiments of the present invention 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 invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air conditioner outdoor unit, comprising: chassis; A partition, the partition is arranged in the casing, and the partition divides the internal space of the casing into a compressor chamber and a fan chamber; a compressor, the compressor being disposed in the compressor chamber; an outdoor heat exchanger, the outdoor heat exchanger being disposed in the fan cavity, and a first end of the outdoor heat exchanger being connected to the compressor; A fan, the fan being arranged in the fan cavity to discharge the wind after heat exchange with the outdoor heat exchanger to the external environment; An electrical box, the electrical box being disposed in the compressor cavity and located above the compressor; It is characterized in that The housing is provided with an air inlet, and the air inlet is communicated with the compressor cavity so that wind in the external environment enters the compressor cavity through the air inlet; The electrical box is provided with a heat dissipation air inlet, which is communicated with the compressor cavity so that the wind in the compressor cavity enters the electrical box through the heat dissipation air inlet. The electrical box is also provided with a heat dissipation air outlet, which is communicated with the fan cavity so that the wind after heat exchange in the electrical box enters the fan cavity through the heat dissipation air outlet. in, The air conditioner outdoor unit also includes: a first throttling element, the first throttling element being connected to the second end of the outdoor heat exchanger to throttle the refrigerant once; a cooling heat exchanger, wherein a first end of the cooling heat exchanger is connected to the first throttling element, the cooling heat exchanger is disposed in the compressor cavity and below the electrical box, and the air entering the compressor cavity from the air inlet exchanges heat with the cooling heat exchanger and then enters the electrical box through the heat dissipation air inlet to dissipate heat from the electrical box; A second throttling element is connected to the second end of the cooling heat exchanger to perform secondary throttling of the refrigerant.

2. The air conditioner outdoor unit according to claim 1, characterized in that: Also includes: a first pipeline, the first pipeline being connected between the second end of the outdoor heat exchanger and the first end of the cooling heat exchanger, and the first throttling element being arranged in the first pipeline; A stop valve, the stop valve being arranged on the casing; A second pipeline is connected between the second end of the cooling heat exchanger and the stop valve, and the second throttling element is arranged in the second pipeline.

3. The air conditioner outdoor unit according to claim 2, characterized in that: The first end of the cooling heat exchanger is higher than the second end of the cooling heat exchanger.

4. The air conditioner outdoor unit according to claim 2, characterized in that: The first end and the second end of the cooling heat exchanger are arranged away from the partition.

5. The air conditioner outdoor unit according to claim 1, characterized in that: The cooling heat exchanger is arranged on the side wall of the casing, and the cooling heat exchanger is arranged opposite to the air inlet, so that the wind at the air inlet enters the compressor cavity after heat exchange with the cooling heat exchanger.

6. The air conditioner outdoor unit according to claim 5, characterized in that: The area of ​​the air inlet is S1, the area of ​​the surface of the cooling heat exchanger facing the air inlet is S2, and S1 and S2 satisfy the relationship: 0.75S2≤S1≤S2.

7. The air conditioner outdoor unit according to claim 1, characterized in that: The housing comprises: panel; a side panel connected to the panel; A back plate, the back plate is arranged opposite to the panel, the back plate is arranged integrally with the side plate, and the back plate is provided with the air inlet.

8. The air conditioner outdoor unit according to claim 1, characterized in that: Also includes: The outdoor heat exchanger is provided with an end plate, and the mounting plate is connected between the end plate and the cooling heat exchanger to mount the cooling heat exchanger on the outdoor heat exchanger.

9. The air conditioner outdoor unit according to claim 8, characterized in that: The mounting plate comprises: a first plate body, the first plate body being connected to the end plate; a second plate body, the second plate body being connected to the cooling heat exchanger, the second plate body being parallel to the first plate body, and the second plate body and the cooling heat exchanger being attached to a side wall of the housing; A third plate body is connected between the first plate body and the second plate body, and the third plate body is perpendicular to the first plate body and the second plate body respectively.

10. An air conditioner outdoor unit, comprising: chassis; A partition, the partition is arranged in the casing, and the partition divides the internal space of the casing into a compressor chamber and a fan chamber; a compressor, the compressor being disposed in the compressor chamber; an outdoor heat exchanger, the outdoor heat exchanger being disposed in the fan cavity, and a first end of the outdoor heat exchanger being connected to the compressor; A fan, the fan being arranged in the fan cavity to discharge the wind after heat exchange with the outdoor heat exchanger to the external environment; An electrical box, the electrical box being disposed in the compressor cavity and located above the compressor; It is characterized in that The housing is provided with an air inlet, and the air inlet is communicated with the compressor cavity so that wind in the external environment enters the compressor cavity through the air inlet; The electrical box is provided with a heat dissipation air inlet, which is communicated with the compressor cavity so that the wind in the compressor cavity enters the electrical box through the heat dissipation air inlet. The electrical box is also provided with a heat dissipation air outlet, which is communicated with the fan cavity so that the wind after heat exchange in the electrical box enters the fan cavity through the heat dissipation air outlet. in, The air conditioner outdoor unit also includes: a cooling heat exchanger, the cooling heat exchanger being connected to the second end of the outdoor heat exchanger and being disposed in the compressor cavity; a first throttling element, the first throttling element being connected to the second end of the outdoor heat exchanger to throttle the refrigerant once; A second throttling element is connected to the second end of the cooling heat exchanger to perform secondary throttling of the refrigerant.

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