Anti-condensation electrical box, air conditioner and heat dissipation method

Abstract

The present invention provides a dew-proof electric appliance box, an air conditioner and a heat dissipation method, which relate to the technical field of electric appliance boxes and solve the technical problem that in the prior art, an electric appliance box using refrigerant for heat dissipation has potential safety hazards caused by condensation inside. The device includes a refrigerant heat dissipation structure and a fan assembly, and also includes a dehumidification structure. Among them, an internal circulation channel is formed inside the electric appliance box structure, and the fan assembly, the dehumidification structure and the refrigerant heat dissipation structure are located on the internal circulation channel, and the fan assembly can drive the air flow to circulate inside the electric appliance box structure. An air inlet and an air outlet are formed on the dew-proof electric appliance box structure, and the dew-proof electric appliance box structure further includes a switching device. When the switching device operates, the internal circulation channel can be switched to an external circulation channel, and the external circulation channel is used for the gas circulation inside and outside the electric appliance box structure. When dehumidification is not required inside the electric appliance box of the present invention, the external circulation mode is adopted for heat dissipation, and when dehumidification is required, it is switched to the internal circulation mode for dehumidification and heat dissipation.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical boxes, and more particularly to a condensation-proof electrical box, an air conditioner provided with the condensation-proof electrical box, and a heat dissipation method. Background Art

[0002] Currently, most electrical boxes of air conditioner outdoor units adopt a combination of refrigerant heat dissipation and air cooling. When the air humidity increases, or due to the conversion of the air conditioner mode, the temperature of the refrigerant passing through the refrigerant evaporation pipe is too low, and the temperature difference between the refrigerant and the air inside the electrical box reaches the dew point, condensation will gradually form inside the electrical box, causing damage to the main board components inside the electrical box and posing an electrical safety hazard.

[0003] Currently, to solve this problem, methods such as increasing the refrigerant temperature and reducing the air humidity inside the electrical box are mostly adopted. The former is a method of reducing the temperature difference between the refrigerant and the air. Although this method can solve the condensation problem, it also reduces the heat dissipation efficiency of the main board components to a certain extent; while the latter mostly uses a water vapor filtering device (installed at the air inlet) for dehumidification. The air passes through the water vapor filtering device once, and the air filter element needs to be replaced after being used for a period of time. Summary of the Invention

[0004] The purpose of the present invention is to provide a condensation-proof electrical box, an air conditioner, and a heat dissipation method, which solve the technical problem of the safety hazard caused by condensation inside the electrical box that uses refrigerant heat dissipation in the prior art. The many technical effects that can be produced by the preferred technical solutions provided by the present invention are described in detail below.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A condensation-proof electrical box structure provided by the present invention includes a refrigerant heat dissipation structure and a fan assembly, and further includes a dehumidification structure. Among them, an internal circulation channel is formed inside the electrical box structure, and the fan assembly, the dehumidification structure, and the refrigerant heat dissipation structure are located on the internal circulation channel, and the fan assembly can drive the air flow to circulate inside the electrical box structure.

[0007] Further, the dehumidification structure is a refrigerant dehumidification structure, and the dehumidification structure can condense the water vapor passing through it to achieve the dehumidification effect.

[0008] Further, the dehumidification structure includes a condensation unit, a condensation bracket, and a water receiving tray. The condensation unit is supported on the condensation bracket, and the water receiving tray is arranged below the condensation unit.

[0009] Furthermore, the anti-condensation electrical box structure is formed with an air inlet and an air outlet, and the anti-condensation electrical box structure further includes a switching device. The switching device can switch the air flow channel from the internal circulation channel to the external circulation channel, and the external circulation channel is used for the air circulation inside and outside the electrical box structure.

[0010] Furthermore, the electrical box structure further includes a detection device and a control device. The control device is connected to the detection device and the switching device. When the control device determines that the surface of the refrigerant heat dissipation structure reaches the condensation condition according to the signal of the detection device, the switching device operates to switch the external circulation channel to the internal circulation channel.

[0011] Furthermore, the anti-condensation electrical box structure further includes an outer housing and an intermediate mounting plate. The switching device is connected below the outer housing. The intermediate mounting plate is arranged inside the outer housing and divides the interior of the outer housing into a front cavity and a rear cavity. A top-side communication port is formed at the top of the front cavity and the rear cavity. When the switching device operates, it can close the air inlet, the air outlet, and block the bottom communication between the front cavity and the rear cavity. When in the external circulation channel, the air flow can pass through the air inlet, the rear cavity, the top-side communication port, the front cavity, and then be discharged from the air outlet.

[0012] Furthermore, the switching device includes a bottom partition board. The switching device is formed with a first bottom cavity communicating with the rear cavity and a second bottom cavity communicating with the front cavity. The dehumidification structure is located in the second bottom cavity; the bottom partition board can move upward to fit the intermediate mounting plate to switch the first bottom cavity and the second bottom cavity from the blocked state to the communicating state.

[0013] Furthermore, the switching device further includes an air inlet baffle, an air outlet baffle, and a driving mechanism. The air inlet baffle and the air outlet baffle are respectively used to open and close the air inlet and the air outlet. The air inlet baffle, the air outlet baffle, and the bottom partition board are moved up and down through the same driving structure.

[0014] Furthermore, the switching device further includes a frame body. The frame body is provided with a rear side guide rod and a front side guide rod. One side of the air inlet baffle is connected to the driving mechanism, and the other side is connected to a moving part on the rear side guide rod to be supported on the frame body. Both sides of the air outlet baffle are respectively connected to moving parts on the front side guide rod to be supported on the frame body. The moving part on the rear side guide rod and the moving part on the front side guide rod, and the air inlet baffle are fixedly connected to the bottom partition board.

[0015] Furthermore, the anti-condensation electrical box structure also includes an electrical box base and a back cover structure, the back cover structure is installed on the rear side of the electrical box base, the rear side plate of the electrical box base forms the middle mounting plate and the back cover structure and the back side plate form the rear cavity, the air inlet is arranged on the back cover structure, and the air outlet is surrounded by the bottom of the electrical box base and the switching device.

[0016] Furthermore, the electrical box structure also includes an air-cooled radiator, which is located on the inner circulation channel and mounted on the middle mounting plate.

[0017] An air conditioner comprises the anti-condensation electrical appliance box structure.

[0018] A heat dissipation method for an anti-condensation electrical box structure includes the following contents: when it is determined that the surface of the refrigerant heat dissipation structure reaches the condensation condition, the switching device switches to the inner circulation channel to achieve inner circulation heat dissipation and dehumidification of the airflow; when it is determined that the surface of the refrigerant heat dissipation structure does not reach the condensation condition, the switching device switches to the outer circulation channel to achieve outer circulation heat dissipation of the airflow.

[0019] The present invention provides an anti-condensation electrical box structure, in which an internal circulation channel is formed, a fan assembly, a dehumidification structure and a refrigerant heat dissipation structure are located on the internal circulation channel, and the fan assembly can drive the airflow to circulate in the electrical box structure. When dehumidification is required, the airflow circulates inside the electrical box, and after multiple cycles, the humidity of the air is reduced to minimize the generation of condensation in the electrical box.

[0020] The preferred technical solution of the present invention can at least produce the following technical effects:

[0021] If the dehumidification structure adopts a water vapor filtering device, the filter element needs to be replaced frequently. However, the invention preferably adopts a refrigerant dehumidification structure, which condenses the water vapor passing through it to achieve the dehumidification function;

[0022] An air inlet and an air outlet are formed on the anti-condensation electrical box structure and the anti-condensation electrical box structure also includes a switching device. The switching device can switch the internal circulation channel to the external circulation channel. The external circulation channel is used for the circulation of gas inside and outside the electrical box structure. The external circulation mode is beneficial to the heat dissipation inside the electrical box, and the internal circulation mode can realize the dehumidification function. The switching between the internal circulation and the external circulation is realized by the switching device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 is an exploded view of the anti-condensation electrical box structure provided by the embodiment of the present invention;

[0025] Figure 2 is a structural view of the anti-condensation electrical box structure provided by the embodiment of the present invention;

[0026] Figure 3 is a front view of the anti-condensation electrical box structure provided by the embodiment of the present invention;

[0027] Figure 4 is a right view of the anti-condensation electrical box structure provided by the embodiment of the present invention;

[0028] Figure 5 is a front view of the rear cover structure provided by the embodiment of the present invention;

[0029] Figure 6 is a right view of the rear cover structure provided by the embodiment of the present invention;

[0030] Figure 7 is a structural view of the switching device provided by the embodiment of the present invention;

[0031] Figure 8 is a front view of the rear cover structure provided by the embodiment of the present invention;

[0032] Figure 9 is a top view of the rear cover structure provided by the embodiment of the present invention;

[0033] Figure 10 is a left view of the rear cover structure provided by the embodiment of the present invention;

[0034] Figure 11 is a front view of the dehumidification structure provided by the embodiment of the present invention;

[0035] Figure 12 is Figure 11 the sectional view taken along the line A-A of;

[0036] Figure 13 is a partial sectional view of the anti-condensation electrical box structure provided by the embodiment of the present invention (showing the external circulation of the air flow);

[0037] Figure 14It is a partial cross-sectional schematic diagram of the anti-condensation electrical box structure provided by an embodiment of the present invention (illustrating the internal circulation of airflow).

[0038] In the figure, 1-rear cover structure; 101-electrical box fixing frame; 102-rear cover body; 103-refrigerant pipe sealing plate; 104-connecting frame slide; 105-air inlet; 2-switching device; 201-air inlet baffle; 202-baffle connecting frame; 203-axis fixing seat; 204-rear guide rod; 205-front guide rod; 206-air outlet baffle; 207-air outlet; 208-screw; 209-screw nut; 210-motor bracket; 211-motor; 2 12-left baffle; 213-bearing connecting frame; 214-bottom baffle; 215-right baffle; 216-linear bearing; 217-bottom baffle; 3-dehumidification structure; 301-condensing unit; 302-condensing bracket; 303-water tray; 4-fan assembly; 5-mainboard electrical components; 6-refrigerant heat dissipation structure; 601-refrigerant radiator; 602-refrigerant pipe; 7-air-cooled radiator; 8-electrical box base; 801-middle mounting plate; 802-top side connecting port. DETAILED DESCRIPTION

[0039] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0040] The present invention provides an anti-condensation electrical box structure, including a refrigerant heat dissipation structure 6 and a fan assembly 4, and also includes a dehumidification structure 3, wherein an internal circulation channel is formed in the electrical box structure, and the fan assembly 4, the dehumidification structure 3 and the refrigerant heat dissipation structure 6 are located on the internal circulation channel and the fan assembly 4 can drive the airflow to circulate in the electrical box structure. The function of the fan assembly 4 is to promote the air circulation inside the electrical box, and the mainboard electrical component 5 is arranged in the anti-condensation electrical box structure. The mainboard electrical component is a heating component inside the electrical box and is a heat dissipation object; the structure of the refrigerant heat dissipation structure 6 generally includes a refrigerant radiator 601 and a refrigerant pipe 602, and the refrigerant radiator 601 presses the refrigerant pipe 602 and is fixed behind the mainboard electrical component 5, and a low-temperature refrigerant flows into the refrigerant pipe 602 to dissipate heat for the mainboard components. The present invention arranges a dehumidification structure 3 inside the electrical box structure, and adds an internal circulation channel in the electrical box structure. When dehumidification is required, the airflow circulates inside the electrical box, and after multiple cycles, the humidity of the air is reduced to avoid the generation of condensation in the electrical box as much as possible.

[0041] As an optional implementation, the dehumidification structure 3 is a refrigerant dehumidification structure, and the dehumidification structure 3 can condense the water vapor passing through it to achieve the dehumidification effect. The dehumidification structure 3 can adopt a water vapor filtration device, but the filter element needs to be replaced frequently. The invention preferably adopts a refrigerant dehumidification structure to condense the water vapor passing through it to achieve the dehumidification function.

[0042] Regarding the specific structure of the dehumidification structure 3, it can be as follows: Refer to Figures 11 - 12 , the dehumidification structure 3 includes a condensation unit 301, a condensation support 302, and a water receiving tray 303. The condensation unit 301 is supported on the condensation support 302, and the water receiving tray 303 is arranged below the condensation unit 301. The main function of the condensation unit 301 is to condense and dry the water vapor in the passing air, and the function of the water receiving tray 303 is to collect the condensed water and discharge it outside the electrical box; the function of the condensation support 302 is to fix the condensation unit 301 above the water receiving tray 303. A low-temperature refrigerant flows through the refrigerant unit 301, which is equivalent to an evaporator, to achieve the effect of condensation dehumidification.

[0043] As an optional implementation, the anti-condensation electrical box is formed with an air inlet 105 and an air outlet 207, and the anti-condensation electrical box structure further includes a switching device 2. When the switching device 2 operates, it can switch the air flow channel from the internal circulation channel to the external circulation channel, and the external circulation channel is used for the air circulation inside and outside the electrical box structure. The external circulation is beneficial to the heat dissipation inside the electrical box. Through the switching device 2, the switching between the internal circulation and the external circulation is realized. In the external circulation mode, the air inlet 105 and the air outlet 207 are in the open state, and the air outside the electrical box enters the inside of the electrical box through the air inlet 105 and is discharged outside the electrical box through the air outlet 207; in the internal circulation mode, the air inlet 105 and the air outlet 207 are in the closed state, and the air flow circulates inside the electrical box structure.

[0044] As an optional implementation, the electrical box structure further includes a detection device and a control device. The control device is connected to the detection device and the switching device 2. When the control device determines that the surface of the refrigerant heat dissipation structure 6 reaches the condensation condition according to the signal of the detection device, the switching device 2 operates to switch the external circulation channel to the internal circulation channel. For the determination of the surface of the refrigerant heat dissipation structure 6 reaching the condensation condition, it can be judged by whether the temperature difference between the air temperature inside the electrical box and the surface temperature of the refrigerant heat dissipation structure 6 reaches the condensation condition. The specific discrimination method is not the focus of the protection of the present invention and will not be described in detail.

[0045] Regarding the outer circulation channel and the inner circulation channel, the specific description is as follows: The anti-condensation electrical box structure further includes an outer housing and an intermediate mounting plate 801. A switching device 2 is connected to the lower part of the outer housing. The intermediate mounting plate 801 is arranged inside the outer housing and divides the interior of the outer housing into a front cavity and a rear cavity. Top-side communication ports 802 are formed at the tops of the front cavity and the rear cavity. When the switching device 2 operates, it can close the air inlet 105, the air outlet 207, and block the communication at the bottoms of the front cavity and the rear cavity. When it is in the outer circulation channel, the air flow can pass through the air inlet 105, the rear cavity, the top-side communication port 802, the front cavity, and then be discharged from the air outlet 207. When switched to the inner circulation channel, the air inlet 105 and the air outlet 207 are opened, the bottoms of the front cavity and the rear cavity are connected, and the air flow can circulate internally through the rear cavity, the top-side communication port 802, the front cavity, and the connected part at the bottoms of the front cavity and the rear cavity. Combined with Figure 13 , the outer circulation channel and the inner circulation channel are specifically described as follows: The intermediate mounting plate 801 is the rear panel of the electrical box base 8. The left side of the intermediate mounting plate 801 is the rear cavity, and the right side of the intermediate mounting plate 801 is the front cavity. Top-side communication ports 802 are provided at the tops of the front cavity 207 and the rear cavity. When the air inlet 105 is in the open state, the air inlet 105 is connected to the rear cavity. When the air outlet 207 is in the open state, the air outlet 207 is connected to the front cavity.

[0046] Regarding the switching of whether the bottoms of the front cavity and the rear cavity are connected or not, it is as follows: Refer to Figure 7 , the switching device 2 includes a bottom partition plate 217. A first bottom cavity connected to the rear cavity and a second bottom cavity connected to the front cavity are formed on the switching device 2. The dehumidification structure 3 is located in the second bottom cavity; the bottom partition plate 217 can move upward in contact with the intermediate mounting plate 801 to switch the first bottom cavity and the second bottom cavity from the blocked state to the connected state.

[0047] The switching device 2 further includes an air inlet baffle 201, an air outlet baffle 206, and a driving mechanism. The air inlet baffle 201 and the air outlet baffle 206 are respectively used to open and close the air inlet 105 and the air outlet 207. The air inlet baffle 201, the air outlet baffle 206, and the bottom partition plate 217 perform up and down movements through the same driving structure. Combined with Figure 7 The switching device 2 is described. Refer to Figure 7 , which shows the bottom partition plate 217. The first bottom cavity is between the air inlet baffle 201 and the bottom partition plate 217, and the second bottom cavity is between the bottom partition plate 217 and the air outlet baffle 206. The driving structure is a linear driving structure, and the same driving structure can be used to drive the air inlet baffle 201, the air outlet baffle 206, and the bottom partition plate 217 to move up and down simultaneously. Of course, the air inlet baffle 201, the air outlet baffle 206, and the bottom partition plate 217 can also be respectively driven by different driving structures.

[0048] Figure 7 and Figure 13 In the embodiment, the state of the switching device 2 is consistent. At this time, the air inlet baffle 201 opens the air inlet 105, the air outlet baffle 206 opens the air outlet 207, and the bottom blocking plate 217 blocks the communication between the first bottom cavity and the second bottom cavity. When the air inlet baffle 201, the air outlet baffle 206 and the bottom blocking plate 217 move upward at the same time, they move to the position shown in FIG. Figure 14 The position shown in the figure, at this time, the air inlet baffle 201 closes the air inlet 105, the air outlet baffle 206 closes the air outlet 207, and the first bottom cavity and the second bottom cavity are connected. Here, it should be noted that, see Figure 7 , illustrating an air inlet baffle 201, on which an air outlet is arranged. When the air inlet baffle 201 blocks the air inlet 105, the area below the air outlet of the air inlet baffle 201 blocks the air inlet 105. When the air inlet baffle 201 moves downward, the air outlet on the air inlet baffle 201 is connected to the air inlet 105.

[0049] As an optional embodiment, the switching device 2 also includes a frame, on which a rear guide rod 204 and a front guide rod 205 are provided, one side of the air inlet baffle 201 is connected to the driving mechanism, and the other side is connected to the moving part on the rear guide rod 204 to be supported on the frame, and both sides of the air outlet baffle 206 are respectively connected to the moving part on the front guide rod 205 to be supported on the frame, the moving part on the rear guide rod 204 and the moving part on the front guide rod 205, the air inlet baffle 201 and the bottom baffle 217 are fixedly connected, the air inlet baffle 201 and the bottom baffle 217 can be an integrally formed plate, and the moving part can be a linear bearing 216. With regard to the driving mechanism, the driving mechanism can be a motor and a screw mechanism, and the screw mechanism can be changed to a gear rack transmission; or the driving mechanism can be a hydraulic or pneumatic transmission.

[0050] The structure of the switching device 2 is described in detail as follows: Figures 7 - 10, the switching device 2 is made of sheet metal parts. Its main structure includes an air inlet baffle 201, a baffle connecting frame 202, a shaft fixing seat 203, a rear side guide rod 204, a front side guide rod 205, an air outlet baffle 206, a lead screw 208, a lead screw nut 209, a motor bracket 210, a motor 211, a left side baffle 212, a bearing connecting frame 213, a bottom baffle 214, a right side baffle 215, a linear bearing 216, and a bottom partition board 217. Among them, the left side of the air inlet baffle 201 is fixedly connected to the baffle connecting frame 202, and the right side is fixed to the lead screw nut 209. The main function of the air inlet baffle 201 is to control the opening and closing of the air inlet 105 by moving up and down; one end of the baffle connecting frame 202 is connected to the air inlet baffle 201, and the other end is fixed to the linear bearing 216 (the linear bearing 216 on the rear side guide rod 204); both ends of the air outlet baffle 206 are fixedly connected to the linear bearings 216 on two front side guide rods 205. The bearing connecting frame 213 connects the linear bearing 216 on the front side guide rod 205 and the linear bearing 216 on the rear side guide rod 204, so that the air inlet baffle 201 and the air outlet baffle 206 are connected together, and the air outlet baffle 206 moves up and down synchronously; the main function of the shaft fixing seat 203 is to fix the front side guide rod 205 and the rear side guide rod 204; the linear bearing 216 slides up and down on the corresponding guide rod. Its main function is to slide up and down under the driving of the lead screw, driving the parts on it to move synchronously; the guide rods (including the rear side guide rod 204 and the front side guide rod 205) provide an up and down movement track for the linear bearing 216 and limit its movement range; the stepper motor 211 is connected to the lead screw 208 through a coupling. One end of the lead screw 208 is connected to the motor 211, and the other end is fixed with a bearing. It rotates under the drive of the motor 211, mainly providing power for the switching of the internal and external circulation modes of the whole device. The function of the lead screw nut 209 is to convert the rotation of the lead screw into up and down movement; the motor bracket 210 is used to fix the motor 211; the upper side of the left side baffle 212 is fixed to the rear cover structure 1, and its main function is to seal the circulation channel of the electrical box; the bottom baffle 214 is connected to the left side baffle 212 and the right side baffle 215, mainly playing the role of sealing the circulation channel of the electrical box; the right side baffle 215 is fixed to the rear cover structure 1, serving as a carrier for the stepper motor 211 and the lead screw drive assembly, and at the same time playing the role of sealing the circulation channel of the electrical box.

[0051] When the electrical box is operating normally, the switching device 2 operates to switch to the external circulation channel, that is, the electrical box is in the external circulation state. The air inlet baffle 201 runs to the lowermost end driven by the motor 211, the air inlet 105 is in the open state, and the air inlet baffle 201 drives the baffle connecting frame 202, the linear bearing 216, and the air outlet baffle 206 to move to the lowermost end. At this time, the air inlet 105 and the air outlet 207 are in the open state, and the bottom partition plate 217 blocks the connection between the first bottom cavity and the second bottom cavity, preventing the cooled air from flowing back to the air inlet 105 side. At this time, the air flow is as Figure 13 shown. The wind enters from the air inlet 105, passes through the rear cavity, the top-side communication port 802, and the front cavity, and then is discharged from the air outlet 207.

[0052] When the temperature difference between the air inside the electrical box and the refrigerant heat dissipation structure 6 reaches the condensation condition, the motor 211 rotates, driving the lead screw 208 to rotate. At this time, the lead screw nut 209, the air inlet baffle 201, the baffle connecting frame 202, the linear bearing 216, and the air outlet baffle 206 move synchronously to the uppermost end. At this time, the air inlet 105 is blocked by the air inlet baffle 201, the connection between the first bottom cavity and the second bottom cavity is opened, and the air outlet baffle 206 blocks the air outlet 207. At this time, the air inlet 105 and the air outlet 207 are in the closed state. At this time, the air flow is as Figure 14 shown. Driven by the fan assembly 4, the air passes through the dehumidification structure 3 for condensation drying, and then re-enters the front part (front cavity) of the electrical box base 8 through the channel (rear cavity) on the back of the electrical box base 8, realizing the internal circulation mode of the air in the electrical box. After multiple cycles, the humidity of the air is greatly reduced, achieving the purpose of preventing condensation on the surfaces of the components inside the electrical box.

[0053] As an optional implementation manner, the anti-condensation electrical box structure further includes an electrical box base 8 and a rear cover structure 1. The rear cover structure 1 is installed on the rear side of the electrical box base 8. The rear side plate of the electrical box base 8 forms an intermediate mounting plate 801, and the rear cover structure 1 and the rear side plate form a rear cavity. The air inlet 105 is provided on the rear cover structure 1, and an air outlet 207 is formed between the bottom of the electrical box base 8 and the switching device 2.

[0054] See Figures 1 - 2 、 Figures 5 - 6 , the rear cover structure 1 is a sheet metal part, and its main structure includes an electrical box fixing frame 101, a rear cover main body 102, a refrigerant pipe sealing plate 103, a connecting frame chute 104, and an air inlet 105. Among them, the electrical box fixing frame 101 is used to fix the electrical box, and the main function of the rear cover main body 102 is to seal the electrical box structure, serve as a channel (rear cavity) for the air circulation in the electrical box, and serve as a carrier for the switching device 2; the refrigerant pipe sealing plate 103 plays a role in fixing the refrigerant pipe 602 and sealing the electrical box. The connecting frame chute 104 cooperates with the baffle connecting frame 202.

[0055] See also Figure 13 The electrical box structure also includes an air-cooled radiator 7, which is located on the inner circulation channel and mounted on the middle mounting plate 801. The air-cooled radiator 7 is fixed behind the mainboard electrical component 5 and dissipates heat through the wind in the circulation channel.

[0056] Regarding the assembly of the anti-condensation electrical box structure, it can be as follows: the rear cover structure 1 is fixed to the electrical box base 8 by welding, the switching device 2 is fixed to the rear cover structure by screws, and the two ends of the dehumidification structure 3 are respectively fixed to the right baffle 215 and the left baffle 212 of the switching device 2 by screws; the fan assembly 4 is fixed to the inner wall of the electrical box base 8 by screws; the main board electrical component 5 is fixed in the electrical box base 8 by screws (fixed on the middle mounting plate 801); the refrigerant radiator 601 is fixed to the back of the main board electrical component 5 by screws; the refrigerant pipe 602 is pressed and fixed by the refrigerant radiator 601, and the air-cooled radiator 7 is fixed to the back of the main board electrical component 5 by screws.

[0057] An air conditioner includes an anti-condensation electrical box structure. The anti-condensation electrical box structure includes a refrigerant heat dissipation structure 6, a fan assembly 4 and a dehumidification structure 3, wherein an internal circulation channel is formed in the electrical box structure, the fan assembly 4, the dehumidification structure 3 and the refrigerant heat dissipation structure 6 are located on the internal circulation channel, and the fan assembly 4 can drive the airflow to circulate in the electrical box structure. The present invention arranges a dehumidification structure 3 inside the electrical box structure, and adds an internal circulation channel inside the electrical box structure. When dehumidification is required, the airflow circulates inside the electrical box. After multiple cycles, the humidity of the air is reduced to minimize the generation of condensation in the electrical box.

[0058] Preferably, the anti-condensation electrical box structure is formed with an air inlet 105 and an air outlet 207, and the anti-condensation electrical box structure further includes a switching device 2, the switching device 2 can switch the inner circulation channel to the outer circulation channel, and the outer circulation channel is used for the flow of gas inside and outside the electrical box structure. The outer circulation is beneficial to the heat dissipation inside the electrical box, and the switching between the inner circulation and the outer circulation is realized by the switching device 2.

[0059] A heat dissipation method for an anti-condensation electrical box structure includes the following contents: when it is determined that the surface of the refrigerant heat dissipation structure 6 reaches the condensation condition, the switching device 2 is actuated to switch to an internal circulation channel to achieve internal circulation heat dissipation and dehumidification of the airflow; when it is determined that the surface of the refrigerant heat dissipation structure 6 does not reach the condensation condition, the switching device 2 is actuated to switch to an external circulation channel to achieve external circulation heat dissipation of the airflow. The determination of whether the surface of the refrigerant heat dissipation structure 6 reaches the condensation condition can be determined by determining whether the temperature difference between the air inside the electrical box and the surface of the refrigerant heat dissipation structure 6 reaches the condensation condition. The specific determination method is not the focus of the present invention and is not described in detail.

[0060] Combined with Figure 13 and Figure 14 , the internal air flow circulation and the external air flow circulation are described. When the external air flow circulation occurs, the air enters from the air inlet 105, passes through the refrigerant heat dissipation structure 6, the air-cooled radiator 7, the top-side communication port 802, the main board electrical components 5, and the fan assembly 4, and then is discharged from the air outlet 207; when the internal air flow circulation occurs, the air passes through the refrigerant heat dissipation structure 6, the air-cooled radiator 7, the top-side communication port 802, the main board electrical components 5, the fan assembly 4, and the dehumidification device 2 and then flows back to the refrigerant heat dissipation structure 6, realizing the internal circulation of the air flow within the electrical box structure.

[0061] As described above, the above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An anti-condensation electrical box structure, comprising a refrigerant heat dissipation structure (6) and a fan assembly (4), characterized in that, It further includes a dehumidifying structure (3), wherein, an inner circulation channel is formed inside the electric appliance box structure, the fan assembly (4), the dehumidifying structure (3) and the refrigerant heat dissipation structure (6) are located on the inner circulation channel, and the fan assembly (4) can drive the air flow to circulate inside the electric appliance box structure; an air inlet (105) and an air outlet (207) are formed on the anti-condensation electric appliance box structure, and the anti-condensation electric appliance box structure further includes a switching device (2). When the switching device (2) acts, the air flow channel can be switched from the inner circulation channel to the outer circulation channel, and the outer circulation channel is used for the air circulation inside and outside the electric appliance box structure; the anti-condensation electric appliance box structure further includes an outer shell and an intermediate mounting plate (801). The switching device (2) is connected below the outer shell. The intermediate mounting plate (801) is arranged inside the outer shell and divides the interior of the outer shell into a front cavity and a rear cavity. A top-side communication port (802) is formed at the tops of the front cavity and the rear cavity. When the switching device (2) acts, it can close the air inlet (105), the air outlet (207) and block the bottom communication between the front cavity and the rear cavity. When in the outer circulation channel, the air flow can pass through the air inlet (105), the rear cavity, the top-side communication port (802), the front cavity and then be discharged from the air outlet (207); the switching device (2) includes a bottom partition plate (217). A first bottom cavity communicated with the rear cavity and a second bottom cavity communicated with the front cavity are formed on the switching device (2). The dehumidifying structure (3) is located in the second bottom cavity. The bottom partition plate (217) can move upward in contact with the intermediate mounting plate (801) to switch the first bottom cavity and the second bottom cavity from the blocked state to the communicated state; the switching device (2) further includes an air inlet baffle (201), an air outlet baffle (206) and a driving mechanism. The air inlet baffle (201) and the air outlet baffle (206) are respectively used to open and close the air inlet (105) and the air outlet (207). The air inlet baffle (201), the air outlet baffle (206) and the bottom partition plate (217) are moved up and down by the same driving mechanism; the switching device (2) further includes a frame body. A rear-side guide rod (204) and a front-side guide rod (205) are arranged on the frame body. One side of the air inlet baffle (201) is connected to the driving mechanism, and the other side is connected to a moving part on the rear-side guide rod (204) to be supported on the frame body. Both sides of the air outlet baffle (206) are respectively connected to moving parts on the front-side guide rod (205) to be supported on the frame body. The moving part on the rear-side guide rod (204) and the moving part on the front-side guide rod (205), the air inlet baffle (201) and the bottom partition plate (217) are fixedly connected.

2. The anti-condensation electrical box structure according to claim 1, characterized in that, The dehumidification structure (3) is a refrigerant dehumidification structure, and the dehumidification structure (3) can condense the water vapor passing through it to achieve the dehumidification effect.

3. The anti-condensation electrical box structure according to claim 2, characterized in that, The dehumidification structure (3) includes a condensation unit (301), a condensation bracket (302), and a water receiving tray (303). The condensation unit (301) is supported on the condensation bracket (302), and the water receiving tray (303) is arranged below the condensation unit (301).

4. The anti-condensation electrical box structure according to claim 1, characterized in that, The electric appliance box structure further includes a detection device and a control device. The control device is connected to the detection device and the switching device (2). When the control device determines that the surface of the refrigerant heat dissipation structure (6) reaches the condensation condition according to the signal of the detection device, the switching device (2) operates to switch the outer circulation channel to the inner circulation channel.

5. The anti-condensation electrical box structure according to claim 1, characterized in that, The anti-condensation electric appliance box structure further includes an electric appliance box base body (8) and a rear cover structure (1). The rear cover structure (1) is installed on the rear side of the electric appliance box base body (8). The rear side plate of the electric appliance box base body (8) forms the intermediate mounting plate (801), and the rear cover structure (1) and the rear side plate form the rear cavity. The air inlet (105) is arranged on the rear cover structure (1), and the air outlet (207) is formed between the bottom of the electric appliance box base body (8) and the switching device (2).

6. The anti-condensation electrical box structure according to claim 1, characterized in that, The electric appliance box structure further includes an air-cooled radiator (7). The air-cooled radiator (7) is located on the inner circulation channel and is installed on the intermediate mounting plate (801).

7. An air conditioner, characterized in that, It includes the anti-condensation electric appliance box structure according to any one of claims 1-6.

8. A heat dissipation method using the anti-condensation electrical box structure according to any one of claims 4-6, characterized in that, It includes the following content: When it is determined that the surface of the refrigerant heat dissipation structure (6) reaches the condensation condition, the switching device (2) operates to switch to the inner circulation channel to achieve the heat dissipation and dehumidification of the air flow in the inner circulation. When it is determined that the surface of the refrigerant heat dissipation structure (6) does not reach the condensation condition, the switching device (2) operates to switch to the outer circulation channel to achieve the heat dissipation of the air flow in the outer circulation.

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