Air conditioner

Abstract

The invention discloses an air conditioner, and belongs to the technical field of air treatment. The air conditioner comprises an electrical box; the partition plate is arranged in the electrical box; the driving plate assembly is connected to one side of the partition plate; the refrigerant radiator is connected to the side, opposite to the driving plate assembly, of the partition plate and used for dissipating heat of the driving plate assembly; the cooling fan cover covers the refrigerant radiator and is connected with the partition plate; the drainage hole is communicated with the inside and the outside of the heat dissipation fan cover; and the water guide plate is arranged below the refrigerant radiator and is used for collecting condensation dripping from the refrigerant radiator and guiding the condensation to the drainage hole, so that the condensation is discharged out of the heat dissipation fan cover. According to the air conditioner, condensation at the refrigerant radiator can be discharged, and potential safety hazards caused by the fact that the condensation drips to electrical parts are avoided.

Description

Technical Field

[0001] This application relates to the technical field of air treatment, and particularly to an air conditioner. Background Art

[0002] The electric box of an air conditioner usually uses a refrigerant radiator to dissipate heat to ensure the normal and reliable operation of the air conditioner unit at high temperatures. In some cases, for certain purposes, such as to avoid the refrigerant radiator occupying a separate electric box chamber and to facilitate the installation of the refrigerant radiator, the refrigerant radiator needs to be installed in the same chamber as other electrical components. In some extreme cases, such as when the refrigerant is lacking, the temperature and humidity are high, and the refrigerant temperature control fails simultaneously, condensation may occur on the surface of the refrigerant radiator, and the dripping or spreading of the condensation to nearby electrical components may cause safety hazards such as electrical short circuits. Summary of the Invention

[0003] This application provides an air conditioner that can discharge the condensation at the refrigerant radiator, avoiding the safety hazard caused by the condensation dripping onto the electrical components.

[0004] In one aspect of this application, an air conditioner includes: an electric box; a partition plate disposed inside the electric box; a drive board assembly connected to one side of the partition plate; a refrigerant radiator connected to the side of the partition plate opposite to the drive board assembly for dissipating heat from the drive board assembly; a heat dissipation air hood covering the refrigerant radiator and connected to the partition plate; a drain hole communicating the inside and outside of the heat dissipation air hood; a water guide plate disposed below the refrigerant radiator for collecting the condensation dripping from the refrigerant radiator and guiding the condensation to the drain hole so that the condensation is discharged from the heat dissipation air hood.

[0005] In some embodiments, the drain hole is disposed on the bottom wall of the heat dissipation air hood, and a drain channel is formed on the bottom wall of the heat dissipation air hood. The drain channel is located between the water guide plate and the drain hole; the condensation dripping from the refrigerant radiator flows through the water guide plate and the drain channel to the drain hole.

[0006] In some embodiments, the drain channel is provided with a water retaining rib protruding upward on the side close to the partition plate.

[0007] In some embodiments, the upper surface of the water guide plate is a water guiding surface, the water guiding surface is inclined, and the lowest point of the water guiding surface is close to the drain hole side.

[0008] In some embodiments, the end of the water guide plate far from the partition plate is provided with an upturned edge portion.

[0009] In some embodiments, the refrigerant radiator has fins extending horizontally, and the lowermost fin is the bottom fin; the free end of the bottom fin has an upturned warped portion for blocking condensation.

[0010] In some embodiments, a notch is provided on the heat dissipation hood, and the water guide plate is connected at the notch; a convex portion protruding upward is provided at one end of the notch close to the drain hole, the water guide plate has an extension portion extending toward the drain hole, the extension portion abuts against the upper end of the convex portion, and the upper surface of the extension portion constitutes a part of the water guide surface.

[0011] In some embodiments, an avoidance portion is provided on the partition board, and the module radiator of the driving plate assembly passes through the avoidance portion; a positioning rib extending horizontally is provided at the lower edge of the avoidance portion, and the positioning rib is located below the module radiator.

[0012] On the other hand, an air conditioner according to the present application includes: an electrical box; a partition board provided in the electrical box; a driving plate assembly connected to one side of the partition board; a refrigerant radiator connected to the side of the partition board opposite to the driving plate assembly for dissipating heat from the driving plate assembly; a heat dissipation hood covering the refrigerant radiator and connected to the partition board, and a drain hole is provided on the bottom wall of the heat dissipation hood for the refrigerant pipeline of the refrigerant radiator to pass through; a water guide plate is provided below the refrigerant radiator for collecting the condensed dew dripping from the refrigerant radiator and guiding the condensed dew to the drain hole so that the condensed dew is discharged from the heat dissipation hood.

[0013] In some embodiments, there are no electrical components in the projection area of the refrigerant pipeline of the refrigerant radiator on the partition board. Description of the Drawings

[0014] Figure 1 A perspective view of an electrical box in an air conditioner according to some embodiments is shown;

[0015] Figure 2 A cross-sectional view of the electrical box according to some embodiments is shown;

[0016] Figure 3 An internal structure diagram of the electrical box according to some embodiments is shown;

[0017] Figure 4 A perspective view of the electrical box omitting the box body according to some embodiments is shown;

[0018] Figure 5 An exploded view of the electrical box omitting the box body according to some embodiments is shown;

[0019] Figure 6 and Figure 7 An internal structure diagram of the electrical box according to some embodiments is shown;

[0020] Figure 8 A perspective view of the electrical box at the refrigerant radiator according to some embodiments is shown;

[0021] Figure 9 A perspective view of the electrical box at the module radiator according to some embodiments is shown;

[0022] Figure 10 Shows a perspective view of an electrical box omitting the box cover according to some other embodiments;

[0023] Figure 11 Shows Figure 10 A perspective view of the heat dissipation air hood omitted;

[0024] Figure 12 Shows a schematic diagram of a drainage mechanism of an electrical box according to some other embodiments;

[0025] Figure 13 Shows a partial schematic diagram of a drainage mechanism of an electrical box according to some other embodiments;

[0026] Figure 14 Shows a cross-sectional view of a refrigerant radiator and a water guide plate of an electrical box according to some other embodiments;

[0027] Figure 15 Shows an exploded view of a heat dissipation air hood and a water guide plate of an electrical box according to some other embodiments;

[0028] Figure 16 Shows a perspective view of an electrical box of an air conditioner according to some other embodiments;

[0029] Figure 17 Shows Figure 16 An enlarged view in the direction of A in;

[0030] Figure 18 Shows an exploded view of an electrical box according to some other embodiments;

[0031] Figure 19 Shows a perspective view of a box top cover and a box cover of an electrical box according to some other embodiments;

[0032] Figure 20 Shows a cross-sectional view of an electrical box according to some other embodiments;

[0033] Figure 21 Shows Figure 20 An enlarged view in the direction of X in;

[0034] Figure 22 Shows Figure 20 An enlarged view in the direction of Y in;

[0035] Figure 23 Shows a perspective view of a box cover of an electrical box according to some other embodiments;

[0036] Figure 24 Shows Figure 23 An enlarged view in the direction of Z in;

[0037] In the above figures, 100 is an electrical box; 101 is a partition; 1011 is an avoidance portion; 1012 is a positioning rib; 1013 is an air return opening; 1014 is an air outlet; 102 is a first space; 103 is a second space; 104 is a communication portion; 105 is a box body; 1051 is a first bottom edge; 1052 is a second bottom edge; 1053 is a flanging; 1054 is a top flanging; 106 is a box cover; 1061 is a first side portion; 1062 is a second side portion; 1063 is a third side portion; 1064 is a bottom flanging; 107 is a box top cover; 1071 is a first top edge; 1072 is a second top edge; 108 is a support plate; 109 is a receiving portion; 110 is a drive plate assembly; 111 is a drive plate; 112 is a power module; 113 is a module radiator; 114 is a backing plate; 1141 is an exposed portion; 120 is a refrigerant radiator; 121 is a radiator body; 1211 is a fin; 1212 is a bottom fin; 1213 is a warping portion; 122 is a refrigerant pipeline; 130 is a cooling fan; 140 is a cooling air hood; 141 is a first wall; 142 is a second wall; 143 is a third wall; 144 is a first air guiding surface; 145 is a second air guiding surface; 146 is a fourth wall; 146a is a drain hole; 146b is a drain surface; 146c is a water retaining rib; 147 is a pipe groove; 148 is a notch; 148a is a convex portion; 150 is a fan cover; 151 is a mounting opening; 160 is a water guide plate; 161 is a water guiding surface; 162 is an extension portion; 163 is an edge portion; 164 is a water guide plate body; 165 is a mounting ear; 171 is a first gasket; 1711 is a first end wrapping; 172 is a second gasket; 173 is a third gasket; 1731 is a second end wrapping. Detailed implementation manners

[0038] To make the purpose and implementation manners of this application clearer, the following will clearly and completely describe the exemplary implementation manners of this application with reference to the drawings in the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only a part of the embodiments of this application, rather than all of the embodiments.

[0039] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application 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 this application.

[0040] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0041] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "joined" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In this application, the air conditioner performs the refrigeration cycle 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.

[0043] The compressor compresses the refrigerant gas in a low-temperature and low-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.

[0044] 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 the 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.

[0045] 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.

[0046] 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 serves as a heater in the heating mode. When the indoor heat exchanger is used as an evaporator, the air conditioner serves as a cooler in the cooling mode.

[0047] The air conditioner of this application can be a split-type air conditioner with a separate outdoor unit and indoor unit, or an integrated air conditioner with the outdoor unit and indoor unit integrated into one.

[0048] Reference Figure 1 and Figure 2 According to the embodiment of the present application, the air conditioner includes an electrical box 100. The electrical box 100 is provided with electrical components for realizing the electrical control function of the air conditioner.

[0049] A partition 101 is provided in the electrical box 100, and the partition 101 divides the space in the electrical box 100 into two spaces, namely a first cavity 102 and a second cavity 103. When the air conditioner is in use, the partition 101 is vertically arranged in the electrical box 100.

[0050] Reference Figures 3 to 5 The driving board assembly 110 is connected to one side of the partition 101. For example, the driving board assembly 110 can be located in the second cavity 103. The driving board assembly 110 includes a driving board 111, a power assembly and a pad 114. The power assembly includes a power module 112 and a module heat sink 113.

[0051] The driving board 111 may be a PCB board, and the power module 112 is connected to the driving board 111 . Here, it is defined that the power module 112 is connected to the front of the driving board 111 , and other electrical components may be connected to the back of the driving board 111 to increase the utilization rate of the driving board 111 .

[0052] The pad 114 is provided with an exposed portion 1141 , which may be a groove penetrating the pad 114 , and the module heat sink 113 is connected to the pad 114 corresponding to the exposed portion 1141 .

[0053] The power module 112 on the driving board 111 is connected to the module heat sink 113 , and the driving board 111 is connected to the backing plate 114 via lengthened studs.

[0054] The module heat sink 113 is made of metal, such as an aluminum block, and the heat generated by the power module 112 is transferred to the module heat sink 113. One end of the module heat sink 113 away from the power module 112 is exposed from the pad 114 through the exposed portion 1141.

[0055] The backing plate 114 is connected to the partition plate 101 to achieve the connection of the driving plate assembly 110 on the partition plate 101 .

[0056] A avoiding portion 1011 is also provided at a position on the partition 101 corresponding to the exposed portion 1141 . The avoiding portion 1011 may be an opening provided on the partition 101 , and the module heat sink 113 is plugged into the avoiding portion 1011 .

[0057] The circumferential part of the avoidance part 1011 is provided with positioning ribs 1012 extending towards the first cavity 102, and the positioning ribs 1012 can be formed by flanging and bending the circumferential wall of the avoidance part 1011. The positioning ribs 1012 are located around the module radiator 113 to limit the position of the module radiator 113.

[0058] The electrical box 100 is also provided with a refrigerant radiator 120. The refrigerant radiator 120 is located in the first cavity 102. The refrigerant radiator 120 is closely attached to the module radiator 113 of the drive board assembly 110, so that the heat generated by the power module 112 can be transferred to the refrigerant radiator 120 through the module radiator 113, and the refrigerant radiator 120 takes away the heat.

[0059] The refrigerant radiator 120 includes a radiator body 121 and a refrigerant pipeline 122. The refrigerant pipeline 122 can be connected to the radiator body 121 by means of crimping, welding, expanding, etc.

[0060] The refrigerant pipeline 122 can be in a "U" shape and is installed in the radiator body 121. The two ports of the refrigerant pipeline 122 are connected to the refrigerant system of the air conditioner. Combined with the control system, the low-temperature refrigerant flows through the refrigerant pipeline 122, and the low-temperature refrigerant takes away the heat on the radiator body 121 while flowing in the refrigerant pipeline 122, achieving the heat dissipation effect.

[0061] The radiator body 121 is connected to the module radiator 113 by screws, which can ensure the close attachment of the refrigerant radiator 120 and the module radiator 113, thereby ensuring the heat transfer effect.

[0062] According to the embodiments of the present application, a plurality of fins 1211 can be provided on the radiator body 121. Through convective heat transfer with the air, the heat of the electrical components absorbed in the air is conducted to the fins 1211, and then the low-temperature refrigerant takes away the heat.

[0063] One end of the radiator body 121 in contact with the module radiator 113 is a plane, which can increase the contact area, and the fins 1211 are formed at one end of the radiator body 121 away from the module radiator 113.

[0064] In some embodiments, the fins 1211 of the refrigerant radiator 120 protrude from the electrical box 100, and the natural flowing air outside the electrical box 100 can be used to achieve convective heat transfer.

[0065] In some other embodiments, the electrical box 100 is a closed structure, and the refrigerant radiator 120 is completely located inside the electrical box 100.

[0066] In this embodiment, a cooling fan 130 can be arranged inside the electrical box 100 to drive the air flow inside the electrical box 100. The air flowing inside the electrical box 100 exchanges heat with the fins 1211, and the heat is carried away by the low-temperature refrigerant.

[0067] Inside the electrical box 100, in addition to the power module 112 with relatively high heat generation, there are also other electrical components, such as filter boards, reactors, as well as the main control board and terminal block with relatively low heat generation. The heat generated by the electrical components is dissipated into the air, and then under the action of the cooling fan 130, the heat in the air is carried away by the low-temperature refrigerant, thereby realizing the heat conduction and dissipation of the power module 112 and the heat dissipation of other electrical components.

[0068] If only the cooling fan 130 is arranged inside the electrical box 100, the air flow is relatively dispersed, and the heat in the air cannot flow to the fins 1211 of the refrigerant radiator 120 relatively concentratedly and quickly. Also, since the electrical box 100 has a closed structure, more efficient heat dissipation is required.

[0069] Therefore, in the embodiment of the present application, referring to Figures 6 to 9 , a cooling air hood 140 is further arranged inside the electrical box 100. The cooling air hood 140 covers the refrigerant radiator 120 and is connected to the partition board 101.

[0070] The cooling air hood 140 and the partition board 101 enclose a cooling air duct, and the refrigerant radiator 120 is located inside the cooling air duct.

[0071] The cooling air duct is provided with a spaced apart air return opening 1013 and an air outlet 1014. The cooling fan 130 is arranged at the air return opening 1013 or at the air outlet 1014, or cooling fans 130 are respectively arranged at the air return opening 1013 and the air outlet 1014.

[0072] The cooling fan 130 drives the air inside the electrical box 100 to enter the cooling air duct from the air return opening 1013. Inside the cooling air duct, the heat of the air is transferred to the fins 1211 and then blown out from the air outlet 1014.

[0073] In the air flow direction, the air return opening 1013 and the air outlet 1014 are respectively located on both sides of the refrigerant radiator 120. In this way, the air can pass through the refrigerant radiator 120 inside the cooling air duct.

[0074] The arrangement of the cooling air hood 140 can make the air inside the electrical box 100 concentrated in the cooling air duct, improving the heat dissipation efficiency of the electrical components.

[0075] In some embodiments of the present application, heat-generating components such as filter boards and reactors with relatively high heat generation are arranged in the second cavity 103, and main control boards, terminal blocks, etc. with relatively low heat generation are arranged in the first cavity 102. The filter boards and reactors are fixedly connected to the partition 101 in the second cavity 103. The main control boards and terminal blocks are fixedly connected to the partition 101 in the first cavity 102. In order to distinguish the filter boards, reactors, etc. with high heat generation from the main control boards, terminal blocks, etc. with low heat generation, the filter boards and reactors with relatively high heat generation are referred to as heat-generating electrical components 160.

[0076] The air return opening 1013 and the air outlet 1014 are arranged on the partition 101, and the cooling fan 130 is arranged corresponding to the air outlet 1014 in the second cavity 103. The cooling fan 130 is fixedly connected to the partition 101.

[0077] The cooling fan 130 can drive the air in the second cavity 103 to pass through the refrigerant radiator 120 of the heat dissipation duct, thereby realizing the heat dissipation of the filter board and reactor in the second cavity 103.

[0078] Specifically refer to Figure 2 and Figure 4 , the arrows in the figure indicate the air flow direction. The cooling fan 130 can drive the air in the second cavity 103 to enter the heat dissipation duct through the air return opening 1013, and after heat exchange with the refrigerant radiator 120, it circulates back to the second cavity 103 from the air outlet 1014.

[0079] In other embodiments, heat-generating components such as filter boards and reactors with relatively high heat generation are arranged in the first cavity 102, the air return opening 1013 and the air outlet 1014 can be arranged on the heat dissipation hood 140, and the cooling fan 130 is located in the first cavity 102.

[0080] The cooling fan 130 can drive the air in the first cavity 102 to pass through the refrigerant radiator 120 of the heat dissipation duct, thereby realizing the heat dissipation of the filter board and reactor in the first cavity 102.

[0081] In the present application, arranging the cooling fan 130 and the heat-generating electrical component 160 in the same space can improve the heat dissipation speed of the heat-generating electrical component 160 and ensure the heat dissipation effect of the electrical box 100.

[0082] Exemplarily, refer to Figure 4 , heat-generating electrical components 160 such as filter boards and reactors are located on the left side of the partition 101, and the drive board assembly 110 is located on the right side of the partition 101; the air return opening 1013 is located below the refrigerant radiator 120, and the air outlet 1014 is located above the refrigerant radiator 120.

[0083] The air outlet end of the cooling fan 130 faces the lower left, so that the air outlet end of the cooling fan 130 faces the heat-generating electrical component 160. This can make the airflow driven by the cooling fan 130 flow towards the heat-generating electrical component 160, thereby increasing the heat dissipation speed.

[0084] In other embodiments, the heat-generating electrical component 160 and the drive board assembly 110 can also be arranged vertically, and the air outlet end of the cooling fan 130 faces downward.

[0085] According to an embodiment of the present application, the fins 1211 extend vertically, the air return port 1013 and the air outlet 1014 are on the upper and lower sides of the refrigerant radiator 120, and the airflow direction in the heat dissipation air duct is vertical, which is consistent with the extension direction of the fins 1211. This can reduce the wind resistance, increase the airflow velocity, and thus improve the heat exchange rate between the air and the fins 1211.

[0086] In some embodiments, referring to Figure 6 and Figure 7 , the cooling air hood 140 is generally box-shaped and is open on the side facing the partition 101. The cooling air hood 140 includes opposite first wall 141 and second wall 142, the first wall 141 and the second wall 142 are perpendicular to the airflow direction in the heat dissipation air duct, and the third wall 143 is located on the side of the cooling air hood 140 away from the partition 101. An arc-shaped first air guiding surface 144 is provided at the connection of the first wall 141 and the third wall 143, and an arc-shaped second air guiding surface 145 is provided at the connection of the second wall 142 and the third wall 143.

[0087] Exemplarily, the first wall 141 is located on the lower side of the refrigerant radiator 120, that is, the air return port side, and the second wall 142 is located on the upper side of the refrigerant radiator 120, that is, the air outlet side.

[0088] The arc-shaped settings of the first air guiding surface 144 and the second air guiding surface 145 can reduce the eddy currents at both ends of the air duct of the circulating airflow and reduce the wind resistance.

[0089] In some embodiments, the cooling air hood 140 further includes fourth walls 146 connected to the left and right ends of the third wall 143, and the fourth walls 146 are connected to the partition 101.

[0090] The gap between the radiator body 121 and the fourth wall 146 and the gap between the radiator body 121 and the third wall 143 are smaller than the gap between adjacent fins 1211. That is, the gap between the radiator body 121 and the fourth wall 146 is D1, the gap between the radiator body 121 and the third wall 143 is D2, and the gap between adjacent two fins 1211 is D3. D1 is less than D3, and D2 is less than D3.

[0091] In this way, the airflow passing through D1 and D2 can be reduced, enabling the airflow to pass over the fins 1211 as much as possible, thus ensuring the heat dissipation efficiency.

[0092] According to an embodiment of the present application, a buckle extending towards the partition 101 is provided on the fourth wall 146. Correspondingly, a buckle groove is provided on the partition 101. The buckle can be snapped into the buckle groove to achieve the positioning connection between the heat dissipation air hood 140 and the partition 101, and then the heat dissipation air hood 140 is fixed to the partition 101 by combining with screws.

[0093] Continue to refer to Figure 5 , a pipe groove 147 is further provided on the side wall of the heat dissipation air hood 140, and the refrigerant pipeline 122 of the refrigerant radiator 120 passes out of the heat dissipation air hood 140 from the pipe groove 147. The pipe groove 147 can limit the refrigerant pipeline 122.

[0094] Specifically, one side of the pipe groove 147 facing the partition 101 is open, and when assembling, the pipe groove 147 is aligned with the refrigerant pipeline 122 for installation.

[0095] In some embodiments, continue to refer to Figure 4 , Figure 5 , the axis of the heat dissipation fan 130 is parallel to the partition 101, which can make the airflow flow parallel to the partition 101 and can flow to the heating electrical components faster.

[0096] A fan cover 150 is further provided in the electrical box 100, and the fan cover 150 is connected to the partition 101 corresponding to the air outlet 1014. An installation opening 151 is provided on the side wall of the fan cover 150, and the heat dissipation fan 130 is installed at the installation opening 151.

[0097] According to an embodiment of the present application, a temperature sensor is provided near the air return port 1013, which can detect the air temperature at the air return port 1013 in real time. According to the air temperature value at the air return port 1013, the heat dissipation fan 130 or / and the refrigerant flow rate or / and the refrigerant temperature can be adjusted in real time, so as to control the temperature in the electrical box 100 within a relatively stable range, avoiding the influence of too high temperature on the service life of electrical components or the formation of condensation in the electrical box 100 due to too low temperature.

[0098] Exemplarily, when the detection value of the temperature sensor is higher than the preset temperature range, the heat dissipation fan is controlled to increase the rotation speed, or the refrigerant flow rate at the refrigerant radiator is increased by controlling a flow valve, etc., or the refrigerant temperature at the refrigerant radiator is reduced by controlling an expansion valve, etc.; when the detection value of the temperature sensor is lower than the preset temperature range, the heat dissipation fan is controlled to reduce the rotation speed, or the refrigerant flow rate at the refrigerant radiator is reduced by controlling a flow valve, etc., or the refrigerant temperature at the refrigerant radiator is increased by controlling an expansion valve, etc.

[0099] The refrigerant radiator 120 can effectively take away the heat dissipated in the electrical box 100, ensuring the normal and reliable operation of the air conditioner at high temperatures. In some extreme cases, such as when the refrigerant is lacking, the temperature and humidity are high, and the refrigerant temperature control fails simultaneously, condensation may occur on the surface of the refrigerant radiator 120.

[0100] When the refrigerant radiator 120 is vertically arranged, that is Figure 7 as shown, the condensation generated by the refrigerant radiator 120 can be discharged along the refrigerant pipeline 122. However, when the refrigerant radiator 120 is horizontally arranged, for example Figure 10 as shown, the condensation may seep from the gap between the heat dissipation hood 140 and the partition 101 onto the electrical components below the heat dissipation hood 140. Or, even if the gap between the heat dissipation hood 140 and the partition 101 is sealed and the condensation cannot flow out of the heat dissipation hood 140, under the action of the heat dissipation fan 130, the condensation will also flow with the heat dissipation air flow to other electrical components in the electrical box. Therefore, the condensation must be discharged from the heat dissipation hood 140 to avoid potential safety hazards. The present application has carried out the following structural optimizations:

[0101] Referring to Figures 10 to 15 , a water guiding surface 161 and a drain hole 146a are provided on the bottom wall forming the heat dissipation air duct. The water guiding surface 161 is specifically located below the heat dissipation body 121 and is used to collect the condensation dripping from the refrigerant radiator 120 and then guide the condensation to the drain hole 146a for discharge. In this way, the spread of condensation can be avoided, and the potential safety hazard of electrical short circuit caused by condensation can be solved.

[0102] In some embodiments, a water guiding plate 160 is provided in the electrical box 100. The water guiding plate 160 is arranged below the refrigerant radiator 120, and the upper surface of the water guiding plate 160 forms the water guiding surface 161.

[0103] A notch 148 is provided on the lower wall of the heat dissipation hood 140. The water guiding plate 160 is connected to the notch 148, and the water guiding surface 161 of the water guiding plate 160 forms a part of the inner wall of the heat dissipation air duct. At this time, the drain hole 146a can be provided on the water guiding plate 160, that is, at the lowest point of the water guiding surface 161.

[0104] Or, a notch 148 is provided on the bottom wall of the heat dissipation hood 140. The water guiding plate 160 is connected to the notch 148, and the water guiding surface 161 of the water guiding plate 160 forms a part of the inner wall of the heat dissipation air duct. At this time, a drain hole 146a is provided on the bottom wall of the heat dissipation hood 140, and the water guiding plate 160 guides the condensation to the drain hole 146a.

[0105] If there are electrical components below the drain hole 146a, a pipeline communicating with the drain hole 146a can be provided.

[0106] Condensate can drip from the drain hole 146a onto the bottom wall of the electrical box 100. Since there is no air flow in the first space 102, there is no need to worry about the upward spread of the condensate. The condensate on the bottom wall of the electrical box 100 will slowly dry over time; or the condensate on the bottom wall can flow out of the electrical box 100 through the gap in the bottom wall of the electrical box 100; or, a communication part 104 is also provided on the bottom wall of the electrical box 100. The communication part 104 can communicate with the drain hole 146a, so that the condensate discharged from the drain hole 146a continues to be discharged from the communication part 104 out of the electrical box 100.

[0107] Exemplarily, in the up-down direction, the communication part 104 is directly below the drain hole 146a, and the condensate drips from the drain hole 146a towards the communication part 104 under the action of gravity.

[0108] Or, if there are electrical components between the drain hole 146a and the communication part 104, a pipeline can be provided between the drain hole 146a and the communication part 104, and the condensate is discharged through the pipeline.

[0109] In some embodiments, specifically referring to Figure 13 , after the refrigerant pipeline 122 of the refrigerant radiator 120 comes out of the heat dissipation air cover 140, it extends vertically. Then, the drain hole 146a can be a hole provided on the heat dissipation air cover 140 to avoid the refrigerant pipeline 122, and the communication part 104 can be a hole provided on the electrical box 100 to avoid the penetration of the refrigerant pipeline 122. That is to say, the refrigerant pipeline 122 passes through the heat dissipation air cover 140 from the drain hole 146a and continues to pass through the electrical box 100 from the communication part 104. The condensate flows out of the heat dissipation air cover 140 from the gap between the drain hole 146a and the refrigerant pipeline 122 and continues to flow out of the electrical box 100 from the gap between the communication part 104 and the refrigerant pipeline 122.

[0110] Specifically, the water guide plate 160 can completely cover the radiator body 121 from below, so that the condensate on the radiator body 121 can be completely collected by the water guide plate 160.

[0111] The water guide surface 161 on the water guide plate 160 is inclined, so that the condensate flows along the water guide surface 161 to the drain hole 146a under the action of gravity.

[0112] In the embodiment where the refrigerant pipeline 122 passes through the heat dissipation air cover 140 from the drain hole 146a and continues to pass through the electrical box 100 from the communication part 104, the water guide plate 160 directly extends to the refrigerant pipeline 122.

[0113] Alternatively, the water guide plate 160 and the drain hole 146a are laterally spaced apart, and a drain channel is formed in a portion of the bottom wall of the heat dissipation air hood between the water guide plate and the drain hole. A portion of the inner bottom wall of the drain channel between the water guide plate 160 and the drain hole 146a is referred to as a drain surface 146b. The drain surface 146b is provided as an inclined surface that slopes towards the drain hole 146a. The drain hole 146a is located at the lowest point of the drain surface 146b. Thus, the condensed water can be guided by the water guide plate 161 to the drain surface 146b and then continue to flow along the drain surface 146b to the drain hole 146a.

[0114] In some embodiments, the water guiding surface 161 of the water guide plate 161 is higher than the drain surface 146b. The drain surface 146b has a water retaining rib 146c that extends upward at one end close to the partition 101, and the water retaining rib 146c is used to block the condensed water from flowing out through the gap between the heat dissipation air hood 140 and the partition 101.

[0115] Specifically, the notch 148 is provided with a convex portion 148a that extends upward at one end close to the drain hole 146a; the water guide plate 161 is provided with an extension portion 162 that extends towards the drain hole 146a at one end close to the drain hole 146a. The top surface of the extension portion 162 is a part of the water guiding surface 161, and the extension portion 162 abuts against the upper end of the convex portion 148a.

[0116] According to an embodiment of the present application, specifically referring to Figure 14 and Figure 15 , the water guide plate 160 is provided with an upturned edge portion 163 at one end away from the partition 101, which can block the condensed water from flowing out of the water guide plate 160 from the front edge of the water guide plate 160.

[0117] The water guide plate 160 can be connected to the partition 101 in a form of combination of claws and screws, which can reduce the number of screws used. The claws can be non-removable claws to avoid off-site disassembly.

[0118] Specifically, the water guide plate 160 may include a water guide plate body 164 and mounting ears 165, and the mounting ears 165 are formed by extending downward from the lower end of the water guide plate body 164. The claws can be provided on the water guide plate body 164, and the screws are connected to the partition 101 from the mounting ears 165.

[0119] A sealing cotton pad can be provided at the connection between the water guide plate 160 and the partition 101 to prevent the condensed water from leaking through the gap between the water guide plate 160 and the partition 101. Specifically, the sealing cotton pad can be pasted on the water guide plate 160, and the sealing cotton pad is squeezed after the water guide plate 160 is installed.

[0120] In some embodiments, the fins 1211 on the refrigerant radiator 120 are in a structure form that extends horizontally, and the lowest fin is referred to as the bottom fin 1212.

[0121] One end of the bottom fin 1212 away from the partition 101 has an upturned warping portion 1213. The bottom fin 1212 covers the upper fin from below to collect the condensed dew flowing down from the upper fin and discharge it from both sides of the bottom fin 1212.

[0122] The bottom surface of the bottom fin 1212 can be attached with a heat-insulating cotton pad. For example, a layer of heat-insulating cotton pad can be pasted on the bottom surface of the bottom fin 1212 to prevent condensation at the lower part of the bottom fin 1212.

[0123] In some embodiments, the positioning rib 1012 on the partition 101 extends towards the first space 102. In the direction perpendicular to the partition 101, the length of the bottom positioning rib 1012 is not less than 8 mm, which can block the condensation of the module radiator 113 and prevent the condensed dew from flowing towards the gap between the water guide plate 160 and the partition 101.

[0124] In some usage scenarios, there are relatively high requirements for the protection level of the electrical box 100, and the electrical box 100 is required to have high tightness.

[0125] For example, for a closed electrical box, there are no holes connecting to the outside on the electrical box. However, in the face of the requirement for a high protection level, the connection gaps on the electrical box always cannot meet the sealing requirements. This application mainly conducts a structural design for the tightness of the electrical box.

[0126] Refer to Figures 16 to 24 , the electrical box 100 includes a box body 105 and a box cover 106. The box body 105 is generally in a cuboid shape, one side of the box body 105 is open, and the box cover 106 is connected to the open side of the box body 105.

[0127] In some cases, the box cover 106 is connected to the side of the box body 105. For example, taking the outdoor unit of an air conditioner as an example, define the side where the air outlet is located in the outdoor unit of the air conditioner as the front side, and the opposite air inlet side as the rear side. Especially for the outdoor unit with top air outlet, generally, the operator needs to perform maintenance and repair on the machine from the front side. The box cover 106 of the electrical box 100 is arranged on the front side of the box body 105, and the box cover 106 can be directly opened from the front side to operate the electrical components in the electrical box 100.

[0128] For the left and right sides of the box body 105 and the box cover 106, as well as the bottom, the sealing requirements can be met only by pressing the sealing gasket. However, for the connection gap between the box body 105 and the box cover 106 at the top, if only in the form of pressing the sealing gasket, once the sealing gasket at the top gap is not pressed tightly and fails, water will penetrate downward from the top gap, bringing potential safety hazards.

[0129] In an embodiment of the present application, the top wall of the box body 105 is defined as the box top cover 107. Specifically, the box body 105 further includes a box main body 108 and a box top cover 107, and the box main body 108 and the box top cover 107 are of an integral structure.

[0130] In other embodiments, the box top cover 107 and the box main body 108 are of a two-piece connection structure. The four sides of the box top cover 107 have flanges extending downward. In the assembled state, the flanges surround the top end of the box main body 108, and then the box top cover 107 and the box main body 108 can be connected by screws. The seams of the four flanges can be optionally welded or sealed with sealant.

[0131] The following takes the example of the box cover 106 being connected to the front end of the box main body 108 for introduction:

[0132] The box top cover 107 includes a first top edge 1071 and a second top edge 1072. The first top edge 1071 generally extends horizontally, and the second top edge 1072 is formed by extending downward from the front end of the first top edge 1071.

[0133] Specifically, the first top edge 1071 is arranged in an inclined shape and slopes downward in the direction away from the box cover 106 (from front to back). In this way, rainwater flows downward in the direction away from the box cover 106 under the guidance of the inclined surface of the first top edge 1071, which can reduce the rainwater flowing to the connection between the box top cover 107 and the box cover 106.

[0134] A support plate 108 is connected to the inner side of the box top cover 107. The space between the support plate 108 and the second top edge 1072 forms a receiving portion 109. The top end of the box cover 106 is inserted into the receiving portion 109. The rear end of the box cover 106 abuts against the support plate 108. A sealing gasket is provided between the front end of the box cover 106 and the second top edge 1072, and a sealing gasket is provided between the top end of the box cover 106 and the first top edge 1072.

[0135] The support plate 108 can be set in an inverted "U" shape. The top wall of the support plate 108 is connected to the first top edge 1071 by screws. The rear side wall of the support plate 108 is connected to the partition 101 in the electrical box 100, and the front side wall of the support plate 108 is in a cantilever state.

[0136] According to an embodiment of the present application, the top end of the box cover 106 is generally in a "C" shape and includes a first side portion 1061, a second side portion 1062, and a third side portion 1063.

[0137] The first side portion 1061 covers the front side of the box body 105. The second side portion 1062 is formed by horizontally extending backward from the top end of the first side portion 1061. The third side portion 1063 is formed by vertically extending downward from the rear end of the second side portion 1062. The third side portion 1063 abuts against the support plate 108. A gasket is provided between the second side portion 1062 and the first top edge 1072 for sealing, and a gasket is provided between the first side portion 1061 and the second top edge 1072 for sealing.

[0138] The gasket between the first side portion 1061 and the second top edge 1072 forms a first-stage seal in the vertical direction, and the gasket between the second side portion 1062 and the first top edge 1072 forms a second-stage seal in the horizontal direction. The multi-stage seal can enhance the sealing effect of the top cover 107 of the box and the top end of the lid 106 to meet a higher level of protection effect.

[0139] The support plate 108 limits the rear end of the lid 106, and can squeeze the gasket between the first side portion 1061 and the second top edge 1072 to ensure the sealing effect between the lid 106 and the top cover 107 in the vertical direction.

[0140] In some embodiments, the gaskets between the second side portion 1062 and the first top edge 1072, and between the first side portion 1061 and the second top edge 1072 can be an integral structure. The L-shaped gasket adheres to the first side portion 1061 and the second side portion 1062. The L-shaped gasket enhances the sealing performance at the top cover of the box and at the same time avoids the gasket being torn off and falling during the installation and disassembly process, improving the connection reliability. In this application, in order to distinguish from the subsequent gasket, the gaskets at the first side portion 1061 and the second side portion 1062 are referred to as the first gasket 171.

[0141] An L-shaped second gasket 172 can be connected to the first top edge 1071, and the second side portion 1062 and the first top edge 1071 are sealed through the first gasket 171 and the second gasket 172.

[0142] The first gasket 171 has first end edge wrappings 1711 that fold back inward at the left and right ends of the first side portion 1061. The first end edge wrapping 1711 at the left end can achieve the sealing between the lid 106 and the left side wall of the box body 105, and the first end edge wrapping 1711 at the right end can achieve the sealing between the lid 106 and the right side wall of the box body 105; in addition, the end edge wrapping can prevent the end of the gasket from being torn off and falling during the installation and disassembly process, affecting the sealing performance.

[0143] In some embodiments, the front end of the bottom wall of the box body 105 is provided with a first bottom edge 1051 that vertically extends downward, and a second bottom edge 1052 that horizontally extends forward from the bottom end of the first bottom edge 1051. The first bottom edge 1051 and the second bottom edge 1052 form an L-shaped structure.

[0144] The bottom end of the lid 106 is provided with a bottom hem 1064 extending horizontally forward. The first side 1061 of the lid 106 abuts against the first bottom side 1051, and the bottom hem 1064 of the lid 106 abuts against the second bottom side 1052.

[0145] The bottom hem 1064 forms an upward supporting force on the lid 106, which can make the gasket between the top end of the lid 106 and the first top side 1071 be squeezed tightly, ensuring the sealing effect between the top end of the lid 106 and the top lid 107.

[0146] A gasket is provided between the lower part of the lid 106 and the first bottom side 1051. Specifically, the gasket can be adhered to the lid 106.

[0147] According to an embodiment of the present application, the bottom end of the second top side 1072 inclines forward, so that the bottom end of the accommodating part 109 forms a flared shape to play a guiding role in inserting the lid 106.

[0148] During assembly, first insert the top end of the lid 106 into the accommodating part 109 at the top end, and then place the bottom hem 1064 of the lid 106 on the second bottom side 1052.

[0149] The bottom end part of the support plate 108 can incline backward, so that the bottom end of the accommodating part 109 forms a flared shape to play a guiding role in inserting the lid 106.

[0150] The front ends of the left and right side walls of the box body 105 are provided with outward flanges 1053, and a third gasket 173 is provided between the lid 106 and the flanges 1053.

[0151] The left and right sides of the lid 106 are connected to the flanges 1053 by screws, thereby squeezing the third gasket 173 tightly.

[0152] In some embodiments, the top end of the flange 1053 has a top hem 1054 extending forward, and the top hem 1054 can prevent rainwater and the like from seeping into the interior of the electrical box 100 along the gap between the lid 106 and the box body 105 from top to bottom.

[0153] The top end of the lid 106 abuts against the top hem 1054. The third gasket 173 can be attached to the rear end of the lid 106, and the top end of the third gasket 173 has a second end wrap 1731 folded forward and downward. The second end wrap 1731 can achieve the sealing of the left and right sides at the top of the lid 106 and the box body 105; in addition, the end wrap can prevent the end of the gasket from being torn off during the installation and disassembly process, affecting the sealing performance.

[0154] In this application, by providing a fin - type refrigerant radiator 120 for the drive board assembly 110 and arranging a cooling fan 130 inside the electrical box 100, the heat of the drive board assembly 110 can be taken away by the low - temperature refrigerant in the refrigerant radiator 120. Moreover, the cooling fan 130 can promote the convective heat transfer between the air inside the electrical box and the fins, conduct the heat of the electrical components absorbed by the air to the fins and then be taken away by the refrigerant, realizing the heat conduction and dissipation of the drive board assembly 110 and the air - cooling dissipation of other heating electrical components.

[0155] In this application, by providing a closed - type cooling air duct for the refrigerant radiator 120, with an air return opening and an air outlet arranged on both sides of the cooling air duct, under the action of the cooling fan 130, the air inside the electrical box 100 can be concentrated to circulate through the cooling air duct, improving the heat dissipation speed of the heating electrical components and realizing the efficient heat dissipation of the closed - type electrical box.

[0156] In this application, electrical components are arranged on both sides of the partition respectively, improving the space utilization rate inside the electrical box and making the structure of the electrical box more compact.

[0157] In this application, the drive board assembly with high heat generation, heating electrical components, etc. are arranged on the same side of the partition 101, and the electrical components with low heat generation are arranged on the other side of the partition 101. The heat of the heating electrical components is brought to the air return opening through the circulating air flow, and then passes through the fins in the cooling air duct and is taken away by the refrigerant; the circulating air flow flows between the two chambers, and its flow path is more reasonable.

[0158] In this application, arc - shaped air guiding surfaces are arranged at both ends of the cooling air duct, which can reduce the eddy current of the circulating air flow at the air return opening and the air outlet and reduce the wind resistance.

[0159] In this application, by arranging a drain hole 146a on the cooling air hood 140 and arranging a water guide plate 160 below the radiator body 121, after the water guide plate 160 collects the condensation on the radiator body 121, it guides the condensation to the drain hole 146a and discharges it from the cooling air hood 140, avoiding the condensation generated by the refrigerant radiator 120 from spreading to the electrical components and bringing potential short - circuit hazards.

[0160] In this application, the hole through which the refrigerant pipeline 122 penetrates the cooling air hood 140 is used as the drain hole 146a, and the condensation flows out of the cooling air hood 140 from the gap between the drain hole 146a and the refrigerant pipeline 122, which can simplify the structure without additionally arranging holes on the cooling air hood 140; moreover, there are usually no electrical components at the position of the refrigerant pipeline 122 corresponding to the partition 101, which can avoid the safety impact of condensation on the electrical components.

[0161] In this application, by setting the bottom fins 1212 of the refrigerant radiator 120 in an upward - warped structural form, the bottom fins 1212 have the function of collecting the condensation on the upper fins.

[0162] In this application, a sealing cotton pad is provided at the connection between the water guide plate 160 and the partition plate 101 to prevent condensation from leaking through the gap between the water guide plate 160 and the partition plate 101.

[0163] In this application, by providing a support plate 108 inside the box top cover 107 and a second top edge 1072 extending vertically at the front end of the box top cover 107, the top end of the box cover 106 is inserted between the support plate 108 and the second top edge 1072, and a sealing gasket is provided at the connection gap between the box cover 106 and the box top cover 107; the support plate 108 forms a forward limit for the box cover 106, causing the sealing gasket to be squeezed, thereby meeting the higher requirements for protection and sealing.

[0164] In this application, by setting the top of the box cover 106 into a C-shaped structure, the contact area between the box cover 106 and the box top cover 107 is increased, that is, the sealing area of the sealing gasket is increased, enhancing the sealing effect.

[0165] In this application, by providing a bottom hem 1064 extending horizontally forward at the bottom end of the box cover 106, the bottom hem 1064 of the box cover 106 abuts against the second bottom edge 1052, and the bottom hem 1064 forms an upward supporting force for the box cover 106, which can squeeze the sealing gasket between the top end of the box cover 106 and the first top edge 1071, ensuring the sealing effect between the top end of the box cover 106 and the box top cover 107.

[0166] Finally, it should be noted that those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of this application.

[0167] For the sake of convenience of explanation, the above description has been made in combination with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. According to the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are for better explaining the principles and practical applications, so that those skilled in the art can better use the embodiments and various different modified embodiments suitable for specific use considerations.

Claims

1. An air conditioner, characterized in that, Comprising: Electrical box; Partition board, disposed inside the electrical box; Drive board assembly, connected to one side of the partition board; Refrigerant radiator, connected to the side of the partition board opposite to the drive board assembly, for dissipating heat from the drive board assembly; Heat dissipation air hood, covering the refrigerant radiator and connected to the partition board; Drainage hole, communicating the inside and outside of the heat dissipation air hood; Water guide plate, disposed below the refrigerant radiator, for collecting the condensed water dripping from the refrigerant radiator and guiding the condensed water to the drainage hole, so that the condensed water is discharged from the heat dissipation air hood.

2. The air conditioner according to claim 1, characterized in that, The drainage hole is disposed on the bottom wall of the heat dissipation air hood, and a drainage channel is formed on the bottom wall of the heat dissipation air hood, and the drainage channel is located between the water guide plate and the drainage hole; the condensed water dripping from the refrigerant radiator flows to the drainage hole through the water guide plate and the drainage channel.

3. The air conditioner according to claim 2, wherein The drainage channel is provided with a water retaining rib protruding upward on the side close to the partition board.

4. The air conditioner according to claim 1, characterized in that, The upper surface of the water guide plate is a water guiding surface, the water guiding surface is inclined, and the lowest point of the water guiding surface is close to the drainage hole side.

5. The air conditioner according to claim 1, characterized in that, The end of the water guide plate far from the partition board is provided with an upturned edge portion.

6. The air conditioner according to claim 1, characterized in that, The refrigerant radiator has fins extending horizontally, and the lowermost fin is the bottom fin; the free end of the bottom fin has an upturned warping portion for blocking condensed water.

7. The air conditioner according to claim 1, characterized in that, The heat dissipation air hood is provided with a notch, and the water guide plate is connected at the notch; One end of the notch close to the drainage hole is provided with a convex portion protruding upward, the water guide plate has an extension portion extending toward the drainage hole, the extension portion abuts against the upper end of the convex portion, and the upper surface of the extension portion constitutes a part of the water guiding surface.

8. The air conditioner according to claim 1, wherein The partition board is provided with an avoidance portion, and the module radiator of the drive board assembly passes through the avoidance portion; The lower edge of the avoidance portion is provided with a positioning rib extending horizontally, and the positioning rib is located below the module radiator.

9. An air conditioner, characterized in that, Comprising: Electrical box; Partition board, disposed inside the electrical box; Drive board assembly, connected to one side of the partition board; Refrigerant radiator, connected to the side of the partition board opposite to the drive board assembly, for dissipating heat from the drive board assembly; Heat dissipation air hood, covering the refrigerant radiator and connected to the partition board, and a drainage hole is provided on the bottom wall of the heat dissipation air hood for the refrigerant pipeline of the refrigerant radiator to pass through; Water guide plate, disposed below the refrigerant radiator, for collecting the condensed water dripping from the refrigerant radiator and guiding the condensed water to the drainage hole, so that the condensed water is discharged from the heat dissipation air hood.

10. The air conditioner according to claim 9, wherein, There are no electrical components in the projection area of the refrigerant pipeline of the refrigerant radiator on the partition board.

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