CN213638707U - Electrical box and electrical equipment - Google Patents

Abstract

The utility model relates to an electrical apparatus box and electrical equipment. This electrical apparatus box includes: electrical apparatus box body and radiator unit. The electrical box body comprises a box body and a filter device and a variable frequency driver which are arranged in the box body, wherein the filter device and the variable frequency driver are fixedly connected to the inner wall of the box body. The heat dissipation assembly comprises a first heat dissipation plate, a second heat dissipation plate and a refrigerant pipe, the first heat dissipation plate is fixedly connected to the outer wall, opposite to the inner wall of the box body where the filter device is located, of the box body, the second heat dissipation plate is fixedly connected to the outer wall, opposite to the inner wall of the box body where the variable frequency driver is located, of the box body, of the outer wall, opposite to the variable frequency driver is arranged, and the refrigerant pipe penetrates through the first heat dissipation plate and the second heat dissipation plate. Compared with the prior art, can ensure that the electrical apparatus box maintains a relatively stable temperature state, ensure that the operating temperature of each device in the electrical apparatus box is normal, even under abominable operating mode, the condition that certain device overtemperature moves can not appear yet.

Description

Electrical box and electrical equipment

Technical Field

The utility model relates to a frequency conversion electrical apparatus field especially relates to an electrical apparatus box and electrical equipment.

Background

In the prior art, in order to avoid electromagnetic radiation frequency conversion electronic devices, a frequency conversion driver, a filter device thereof and the like are installed in a closed aluminum box to shield space electromagnetic interference. The frequency conversion electron device is as high power density device, and its calorific capacity is big when using, must design reliable heat dissipation measure, makes the device temperature in reasonable scope, just can guarantee the safe handling and the life-span of device, and current heat dissipation scheme design to the aluminium case is not good enough, and under abominable operating mode, there is the risk of overtemperature prote operation in the device in the aluminium case.

SUMMERY OF THE UTILITY MODEL

The utility model discloses it is not good to current electrical apparatus box radiating effect, and the device has the problem of the risk of overtemperature prote operation under abominable operating mode, has proposed an electrical apparatus box and electrical equipment, and this electrical apparatus box and electrical equipment have that the radiating effect is good and can avoid each device in the electrical apparatus box can not the technological effect of overtemperature prote operation.

An electrical box comprising:

the electric appliance box body comprises a box body, and a filter device and a variable frequency driver which are arranged in the box body, wherein the filter device and the variable frequency driver are fixedly connected to the inner wall of the box body; and a process for the preparation of a coating,

the heat dissipation assembly comprises a first heat dissipation plate, a second heat dissipation plate and a refrigerant pipe, wherein the first heat dissipation plate is fixedly connected to the outer wall, opposite to the inner wall where the filter device is located, of the box body, and is just opposite to the filter device in arrangement, the second heat dissipation plate is fixedly connected to the outer wall, opposite to the inner wall where the variable frequency driver is located, of the box body, and is just opposite to the variable frequency driver in arrangement, and the refrigerant pipe penetrates through the first heat dissipation plate and the second heat dissipation plate.

In one embodiment, the first heat dissipation plate and the second heat dissipation plate each include a mounting plate, a cover plate, and a mounting hole;

the mounting panel rigid coupling in the outer wall of box body, the mounting panel with the connection can be dismantled to the apron, mounting panel and apron cooperation are formed with the confession the refrigerant pipe wears to establish the mounting hole.

In one embodiment, an extending direction of the mounting hole of the first heat dissipation plate and an extending direction of the mounting hole of the second heat dissipation plate are arranged in parallel with each other.

In one embodiment, the number of the mounting holes of the first heat dissipation plate and the number of the mounting holes of the second heat dissipation plate are both plural.

In one embodiment, the refrigerant pipe comprises a first pipeline, a second pipeline, a third pipeline and a fourth pipeline which are sequentially communicated;

the first pipeline and the fourth pipeline penetrate through the second heat dissipation plate, and the second pipeline and the third pipeline penetrate through the first heat dissipation plate.

In one embodiment, the outer wall of the box body and/or the inner wall of the box body are/is covered with a wave-absorbing layer.

In addition, the embodiment of the utility model provides an electrical equipment is still provided, including compressor, condenser, the electrical apparatus box and the evaporimeter that any embodiment provided above-mentioned connected gradually end to end;

one end of the refrigerant pipe is communicated with the condenser, and the other end of the refrigerant pipe is communicated with the evaporator.

In one embodiment, the device further comprises a primary throttling mechanism;

one end of the primary throttling mechanism is communicated with the condenser, and the other end of the primary throttling mechanism is communicated with the refrigerant pipe and used for throttling and cooling the refrigerant flowing out of the condenser and then sending the refrigerant into the refrigerant pipe.

In one embodiment, the device further comprises a secondary throttling mechanism;

one end of the secondary throttling mechanism is communicated with the refrigerant pipe, and the other end of the secondary throttling mechanism is communicated with the evaporator and used for throttling and cooling the refrigerant flowing out of the refrigerant pipe and then sending the refrigerant into the evaporator.

In one embodiment, the device further comprises a main throttling mechanism;

one end of the main throttling mechanism is communicated with the condenser, and the other end of the main throttling mechanism is communicated with the evaporator and used for throttling and cooling the refrigerant flowing out of the condenser and then sending the refrigerant into the evaporator.

In one embodiment, the device further comprises a solenoid valve;

one end of the electromagnetic valve is communicated with the condenser, and the other end of the electromagnetic valve is communicated with the primary throttling mechanism and used for switching on or off the condenser and the primary throttling mechanism.

In one embodiment, the device further comprises a temperature sensor and a controller, wherein the controller is electrically connected with the temperature sensor and is in control connection with the electromagnetic valve;

the temperature sensor is arranged on the variable frequency driver and used for detecting the temperature of the variable frequency driver, and the controller is used for controlling the electromagnetic valve to be electrified or powered off according to the detection value of the temperature sensor.

Above-mentioned electrical apparatus box, when the actual operation, because first heating panel just lays filter, the second heating panel just lays frequency conversion driver for the heat that frequency conversion driver produced passes through the box body and transmits for the second heating panel fast, and the heat that filter produced passes through the box body and transmits for first heating panel fast. The intraductal circulation of refrigerant has the refrigerant, the refrigerant carries out the heat exchange through refrigerant pipe and first heating panel and second heating panel, make the heat on first heating panel and the second heating panel can in time distribute away through the refrigerant, avoid the heat accumulation to lead to the temperature of first heating panel and second heating panel to rise, and then avoid the radiating effect between first heating panel and the filter to descend and make the filter temperature rise, and avoid the second heating panel to descend and make the filter temperature rise to the radiating effect of frequency conversion driver. Compared with the prior art, can ensure that the electrical apparatus box maintains a relatively stable temperature state, ensure that the operating temperature of each device in the electrical apparatus box is normal, even under abominable operating mode, the condition that certain device overtemperature moves can not appear yet.

Drawings

Fig. 1 is a rear view of an electrical box according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the electrical enclosure shown in FIG. 1 from another perspective;

FIG. 3 is an exploded view of the appliance cartridge shown in FIG. 2;

fig. 4 is a system diagram of an electrical device provided in an embodiment of the present invention.

Description of reference numerals:

an electrical box 1; an electric appliance box body 11; a box body 111; a cartridge body 1111; a box cover 1112; a filter device 112; a variable frequency drive 113; a heat dissipating component 12; a first heat dissipation plate 121; a second heat dissipation plate 122; a refrigerant pipe 123; a mounting plate 1201; a cover plate 1202; mounting holes 1203; a compressor 2; a condenser 3; an evaporator 4; a primary throttling mechanism 5; a secondary throttling mechanism 6; a main throttle mechanism 7; and an electromagnetic valve 8.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and 2, an embodiment of the present invention provides an electrical box 1, which includes an electrical box body 11 and a heat dissipation assembly 12. The electrical apparatus box body 11 includes box body 111 and locates filter 112 and frequency conversion driver 113 in box body 111, filter 112 and frequency conversion driver 113 rigid coupling are at the inner wall of box body 111, heat dissipation assembly 12 is including the first heating panel 121 that is located the box body 111 outside, second heating panel 122 and refrigerant pipe 123, first heating panel 121 rigid coupling and box body 111 the outer wall that backs on the back with the inner wall that filter 112 belonged to, and just lay filter 112, second heating panel 122 rigid coupling is in the outer wall that backs on the back with the inner wall that frequency conversion driver 113 belonged to of box body 111, and just lay frequency conversion driver 113, refrigerant pipe 123 wears to locate second heating panel 122 and first heating panel 121.

Above-mentioned electrical apparatus box 1, when actual operation, because first heating panel 121 just lays filter 112, second heating panel 122 just lays frequency conversion driver 113 for the heat that frequency conversion driver 113 produced passes through box 111 and transmits second heating panel 122 fast, and the heat that filter 112 produced passes through box 111 and transmits first heating panel 121 fast, in order to reduce frequency conversion driver 113 and filter 112's temperature. Refrigerant has flowed in refrigerant pipe 123, the temperature of refrigerant is lower to make the pipe wall of refrigerant pipe 123 maintain lower temperature, carry out heat exchange through refrigerant pipe 123 and first heating panel 121 and second heating panel 122, make the heat on first heating panel 121 and the second heating panel 122 can in time distribute away through the refrigerant, avoid the heat accumulation to lead to the temperature of first heating panel 121 and second heating panel 122 to rise, and then avoid the radiating effect between first heating panel 121 and filter 112 to descend and make filter 112 temperature rise, and avoid second heating panel 122 to descend and make filter 112 temperature rise to the radiating effect of variable frequency driver 113.

Compared with the prior art, utilize first heating panel 121 and second heating panel 122 to dispel the heat fast filter device 112 and variable frequency drive 113, and utilize refrigerant pipe 123 to effectively in time shift the heat of first heating panel 121 and second heating panel 122, guarantee the radiating effect of first heating panel 121 and second heating panel 122, can ensure that electrical apparatus box 1 maintains a relatively stable temperature state, the operating temperature of each device in the assurance electrical apparatus box 1 is normal, even under abominable frock, the condition of certain device overtemperature's operation also can not appear.

In an embodiment, referring to fig. 3, each of the first heat dissipation plate 121 and the second heat dissipation plate 122 includes a mounting plate 1201, a cover plate 1202, and a mounting hole 1203, where the mounting plate 1201 is fixedly connected to an outer wall of the box 111, the mounting plate 1201 is detachably connected to the cover plate 1202, and the mounting plate 1201 and the cover plate 1202 cooperate to form the mounting hole 1203 through which the refrigerant pipe 123 passes.

It should be noted that a first mounting groove is provided on the mounting plate 1201, a second mounting groove is provided at a corresponding position of the cover plate 1202, and when the cover plate 1202 is connected to the mounting plate 1201, the first mounting groove and the second mounting groove cooperate to form the mounting hole 1203.

In actual operation, the mounting plate 1201 is mounted on the corresponding position of the outer wall of the box 111, a part of the refrigerant pipe 123 is mounted on the first mounting groove, and finally the mounting groove and the cover plate 1202 are connected, so that another part of the refrigerant pipe 123 is mounted in the second mounting groove. Therefore, the installation of the cooling medium pipe 123 is facilitated, and the contact area between the first cooling plate 121 and the cooling medium pipe 123, which is increased, and the second cooling plate 122 and the cooling medium pipe 123 is beneficial to improving the heat dissipation of the first cooling plate 121 and the second cooling plate 122, so that the heat dissipation speed of the filter device 112 and the variable frequency driver 113 in the electrical box 1 is improved.

It will be appreciated that the mounting plate 1201 may be mounted to the outer wall of the box 111 by screws and the cover plate 1202 may be mounted to the mounting plate 1201 by screws, simply and easily.

In the embodiment, the extending direction of the mounting holes 1203 of the first heat dissipation plate 121 and the extending direction of the mounting holes 1203 of the second heat dissipation plate 122 are arranged in parallel, which is beneficial to simplifying the layout of the refrigerant pipes 123.

In practical applications, the extending direction of each mounting hole 1203 may be arranged along the arrangement direction of the frequency conversion driver 113 and the filter device. For example, the variable frequency driver 113 and the filter device are arranged along the length direction of the electrical box 1, and the extending direction of each mounting hole 1203 is also arranged along the length direction of the electrical box 1.

Further, the number of the first heat dissipation plate 121 and the mounting holes 1203 and the number of the mounting holes 1203 of the second heat dissipation plate 122 are both plural. It will be appreciated that the extension directions of the respective mounting holes 1203 are now arranged in parallel.

In actual operation, because the number of the mounting holes 1203 on the first heat dissipation plate 121 is multiple, the contact area between the refrigerant pipe 123 penetrating through the mounting hole 1203 in the first heat dissipation plate 121 and the first heat dissipation plate 121 is increased, so that the heat transfer speed of the first heat dissipation plate 121 is increased, and the cooling of the filter device 112 is accelerated; meanwhile, the number of the mounting holes 1203 on the second heat dissipation plate 122 is plural, and the contact area between the refrigerant pipe 123 penetrating through the mounting holes 1203 on the second heat dissipation plate 122 and the second heat dissipation plate 122 is increased, so that the heat transfer speed of the second heat dissipation plate 122 is increased, and the cooling of the variable frequency driver 113 is accelerated.

In an embodiment, referring to fig. 1 and 3, the cooling medium pipe 123 includes a first pipeline, a second pipeline, a third pipeline and a fourth pipeline which are sequentially communicated, the first pipeline and the fourth pipeline penetrate through the second heat dissipation plate 122, and the second pipeline and the third pipeline penetrate through the second heat dissipation plate 122. Thus, the first heat dissipation plate 121 and the second heat dissipation plate 122 are simultaneously cooled through one refrigerant pipe 123, and the refrigerant pipe 123 is arranged at one side of the inlet and the outlet, so that the structure is compact, the contact area between the refrigerant pipe 123 and the first heat dissipation plate 121 and the contact area between the refrigerant pipe 123 and the second heat dissipation plate 122 are increased, and the cooling speed is increased.

It can be understood that the first pipeline and the fourth pipeline are used as the inlet and outlet of the refrigerant.

Preferably, the second pipeline and the third pipeline are integrated and U-shaped, so that commercially available U-shaped pipes can be directly adopted, and the assembly of the refrigerant pipe 123 is facilitated.

Furthermore, the first pipeline comprises two first branch circuits connected in parallel, one ends of the two first branch circuits are converged and communicated with the second pipeline, and one ends of the two first branch circuits are converged to serve as a refrigerant inlet. The fourth pipeline comprises two second branch circuits connected in parallel, one ends of the two second branch circuits are converged and communicated with the third pipeline, and the other ends of the two second branch circuits are converged to serve as a refrigerant outlet. The two first branches and the two second branches are all disposed through the mounting holes 1203 of the second heat dissipation plate 122. So, divide the pipe design at second heating panel 122 department to refrigerant pipe 123 for refrigerant pipe 123 is more even with the contact position of second heating panel 122, helps accelerating the heat dissipation of second heating panel 122, thereby improves frequency conversion driver 113's radiating rate, guarantees that frequency conversion driver 113 uses under normal temperature, thereby ensures equipment normal operating.

It should be noted that the filter device 112 and the variable frequency driver 113 may be installed on the same inner wall of the box 111, which helps to simplify the layout of the refrigerant pipe 123.

In addition, the box body 111 is a closed structure, and includes a box body 1111 having an opening at one end and a box cover 1112 covering the box body 1111, and the filter device 112 and the variable frequency driver 113 are installed on the box body 1111. Thus, the effect of completely shielding electromagnetic interference is achieved, and the usability of the variable frequency drive 113 is ensured.

In some embodiments, in order to improve the shielding effect of the electrical box 1, a wave-absorbing layer is coated on the wall surface of the box body 111. The outer wall of the case 111 may be provided, or the inner wall of the case 111 may be provided.

The wave-absorbing layer can be a ceramic wave-absorbing layer, a graphene wave-absorbing layer, a carbon fiber wave-absorbing layer and the like, and is not particularly limited.

In addition, referring to fig. 4, the embodiment of the present invention further provides an electrical apparatus, which includes a compressor 2, a condenser 3, an electrical box 1 and an evaporator 4, which are connected end to end in sequence. One end of the refrigerant pipe 123 of the electrical box 1 is communicated with the condenser 3, and the other end of the refrigerant pipe 123 is communicated with the evaporator 4.

In actual operation, the temperature of the high-temperature and high-pressure refrigerant generated by the compressor 2 is reduced after heat is released by the condenser 3, and when the refrigerant flowing out of the condenser 3 flows through the refrigerant pipe 123, the heat of the first heat dissipation plate 121 and the heat of the second heat dissipation plate 122 are taken away, so that the heat dissipation of the electrical box 1 is realized.

Compared with the prior art, because utilize first heating panel 121 and second heating panel 122 to filter device 112 and variable frequency drive 113 dispel the heat fast, and utilize refrigerant pipe 123 to effectively in time shift the heat of first heating panel 121 and second heating panel 122, guarantee the radiating effect of first heating panel 121 and second heating panel 122, can ensure that electrical apparatus box 1 maintains a relatively stable temperature state, the operating temperature of each device in the assurance electrical apparatus box 1 is normal, even under abominable frock, the condition of certain device overtemperature's operation also can not appear.

It can be understood that, since the electrical apparatus includes the electrical box 1 in any of the above embodiments, it includes all the above advantages, which are not described herein again.

In some embodiments, referring to fig. 4, the electrical equipment further includes a primary throttling mechanism 5, one end of the primary throttling mechanism 5 is communicated with the condenser 3, and the other end of the primary throttling mechanism 5 is communicated with the refrigerant pipe 123, and is configured to throttle and cool the refrigerant flowing out of the condenser 3 and then send the refrigerant into the refrigerant pipe 123.

In actual operation, the pressure and the temperature of the refrigerant flowing through the primary throttling mechanism 5 are both reduced under the throttling action of the primary throttling mechanism 5, and the refrigerant flowing out of the condenser 3 is throttled and cooled by the primary throttling mechanism 5 and then flows into the refrigerant pipe 123, so that the first heat dissipation plate 121 and the second heat dissipation plate 122 are cooled.

Therefore, the first heat dissipation plate 121 and the second heat dissipation plate 122 of the electrical box 1 are cooled by the refrigerant subjected to throttling and cooling processing by the primary throttling mechanism 5, and the temperature of the refrigerant is lower than that of the refrigerant directly flowing out from condensation, so that the cooling and heat dissipation effects are better and the speed is higher.

It should be noted that the variable frequency driver 113 has a strong current circuit, so as to avoid the temperature of the refrigerant throttled and cooled by the primary throttling mechanism 5 being too low, which may cause condensation in the electrical apparatus box 1 due to the refrigerant supercooling the first heat dissipating plate 121 and the second heat dissipating plate 122, and cause short circuit of the electrical apparatus, the aperture size of the primary throttling mechanism 5 should be sufficient that the refrigerant throttled and cooled by the primary throttling mechanism does not cause condensation in the electrical apparatus box 1, and avoid the danger of short circuit of the electrical apparatus.

Further, referring to fig. 4, the electrical equipment further includes a secondary throttling mechanism 6, one end of the secondary throttling mechanism 6 is communicated with the refrigerant pipe 123, and the other end of the secondary throttling mechanism 6 is communicated with the evaporator 4, and is used for throttling and cooling the refrigerant flowing out through the refrigerant pipe 123 and then sending the refrigerant into the evaporator 4.

In actual operation, after the refrigerant is throttled and cooled by the primary throttling mechanism 5, the temperature of the refrigerant is raised to a certain extent after the first heat dissipation plate 121 and the second heat dissipation plate 122 are cooled in the refrigerant pipe 123, and the temperature and the pressure of the refrigerant are reduced after the refrigerant is throttled and cooled for the second time by the secondary throttling mechanism 6. Therefore, the cooling effect of the evaporator 4 can not be influenced when the water flows into the evaporator 4, and the normal operation of the equipment is ensured.

Further, referring to fig. 4, the electrical equipment further includes a main throttling mechanism 7, one end of the main throttling mechanism 7 is communicated with the condenser 3, and the other end of the main throttling mechanism 7 is communicated with the evaporator 4, and is used for throttling and cooling the refrigerant flowing out of the condenser 3 and then sending the refrigerant into the evaporator 4.

In actual operation, the condenser 3 and the evaporator 4 are connected by a main flow path pipe, and a main throttle mechanism 7 is provided in the main flow path pipe. The refrigerant pipe 123 of the electrical box 1 communicates the condenser 3 and the evaporator 4 through the branch flow passage. In addition, the design of the main throttling mechanism 7 and the main flow path pipeline is convenient for the maintenance and installation of the electrical box 1, and when the electrical box 1 is detached, the electrical equipment can be normally used. Meanwhile, as the pipe diameter of the refrigerant pipe 123 of the electrical box 1 is relatively small, in order to not affect the use of the air cooler, the evaporator 4 and the compressor 2 and ensure the normal operation and use effect of the electrical equipment,

it should be noted that the first-stage throttling mechanism 5, the second-stage throttling mechanism 6, and the main throttling mechanism 7 may be commercially available throttling products, such as a throttling valve, an expansion valve, and the like, and are not described herein again.

Further, referring to fig. 4, the electrical equipment further includes an electromagnetic valve 8, one end of the electromagnetic valve 8 is communicated with the condenser 3, and the other end of the electromagnetic valve 8 is communicated with the primary throttling mechanism 5 for switching on or off the condenser 3 and the primary throttling mechanism 5.

During actual operation, under low temperature low-load working condition, variable frequency drive 113 in the electrical apparatus box 1 and filter 112 calorific capacity are little, only carry out heat conduction between first heating panel 121 and second heating panel 122 and the external environment and just can guarantee that variable frequency drive 113 and filter 112 work at normal temperature within range, if continue to adopt the refrigerant cooling, because the refrigerant temperature that condenser 3 flowed out under the low temperature working condition is low, can lead to producing the condensation in the electrical apparatus box 1 to arouse the electrical short circuit danger. Therefore, under the working condition of low temperature and low load, the control electromagnetic valve 8 cuts off the condenser 3 and the first-stage throttling mechanism 5 to avoid condensation, and under the working condition of non-low temperature and low load, the control electromagnetic valve 8 switches on the condenser 3 and the first-stage throttling mechanism 5 to cool the electrical box 1 by using a refrigerant.

Further, the electrical equipment further comprises a temperature sensor and a controller, the controller is electrically connected with the temperature sensor and is in control connection with the electromagnetic valve 8, the temperature sensor is arranged on the variable frequency driver 113 and is used for detecting the temperature of the variable frequency driver 113, and the controller is used for controlling the electrification and the outage of the electromagnetic valve 8 according to the detection value of the temperature sensor.

When the controller detects that the detection value of the temperature sensor is less than A ℃ within a certain continuous time, the electromagnetic valve 8 is controlled to be powered off, and the conduction of the condenser 3 and the primary throttling mechanism 5 is cut off, so that the circulation of the refrigerant in the refrigerant pipe 123 of the cooling electric appliance box 1 is closed. When the controller detects that the detection value of the temperature sensor is greater than B ℃ within a certain continuous time, the controller controls the electromagnetic valve 8 to be electrified, and the condenser 3 and the first-stage throttling mechanism 5 are conducted to open the circulation of the refrigerant in the refrigerant pipe 123 of the cooling electric appliance box 1. When the controller detects that the detection value of the temperature sensor is not less than A ℃ and not more than B ℃, the electromagnetic valve 8 is not controlled to act.

The electrical equipment may be an air conditioner, a refrigerator, or the like.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (12)

1. An electrical box, comprising:

the electric appliance box body (11) comprises a box body (111), and a filter device (112) and a variable frequency driver (113) which are arranged in the box body (111), wherein the filter device (112) and the variable frequency driver (113) are fixedly connected to the inner wall of the box body (111); and a process for the preparation of a coating,

radiating component (12), including first heating panel (121), second heating panel (122) and refrigerant pipe (123), first heating panel (121) rigid coupling in box body (111) with the outer wall that the inner wall at filter (112) place carried on the back mutually, and just right filter (112) lay, second heating panel (122) rigid coupling in box body (111) with the outer wall that the inner wall at variable frequency drive ware (113) place carried on the back mutually, and just right variable frequency drive ware (113) lay, refrigerant pipe (123) wear to locate first heating panel (121) with second heating panel (122).

2. The electrical box according to claim 1, wherein the first heat sink plate (121) and the second heat sink plate (122) each comprise a mounting plate (1201), a cover plate (1202), and a mounting hole (1203);

the mounting plate (1201) is fixedly connected to the outer wall of the box body (111), the mounting plate (1201) and the cover plate (1202) are detachably connected, and the mounting hole (1203) for the refrigerant pipe (123) to penetrate through is formed in the mounting plate (1201) and the cover plate (1202) in a matched mode.

3. The electrical box according to claim 2, characterized in that the direction of extension of the mounting hole (1203) of the first heat sink (121) and the direction of extension of the mounting hole (1203) of the second heat sink (122) run parallel to each other.

4. The electrical box according to claim 3, wherein the number of the mounting holes (1203) of the first heat dissipation plate (121) and the number of the mounting holes (1203) of the second heat dissipation plate (122) are both plural.

5. The electrical box according to claim 2, wherein the refrigerant pipe (123) comprises a first pipeline, a second pipeline, a third pipeline and a fourth pipeline which are sequentially communicated;

the first pipeline and the fourth pipeline penetrate through the second heat dissipation plate (122), and the second pipeline and the third pipeline penetrate through the first heat dissipation plate (121).

6. The electrical box according to any one of claims 1 to 5, characterized in that the outer wall of the box body (111) and/or the inner wall of the box body (111) is/are coated with a wave-absorbing layer.

7. An electrical apparatus, characterized in that it comprises a compressor (2), a condenser (3), an electrical box (1) according to any one of claims 1 to 6 and an evaporator (4) connected in series end to end;

one end of the refrigerant pipe (123) is communicated with the condenser (3), and the other end of the refrigerant pipe (123) is communicated with the evaporator (4).

8. The electrical apparatus according to claim 7, characterized in that it further comprises a primary throttling mechanism (5);

one end of the primary throttling mechanism (5) is communicated with the condenser (3), the other end of the primary throttling mechanism (5) is communicated with the refrigerant pipe (123) and used for throttling and cooling refrigerants flowing out of the condenser (3) and then sending the refrigerants into the refrigerant pipe (123).

9. The electrical apparatus according to claim 8, characterized in that it further comprises a secondary throttling mechanism (6);

one end of the secondary throttling mechanism (6) is communicated with the refrigerant pipe (123), and the other end of the secondary throttling mechanism (6) is communicated with the evaporator (4) and used for throttling and cooling the refrigerant flowing out of the refrigerant pipe (123) and then sending the refrigerant into the evaporator (4).

10. The electric appliance according to claim 8, characterized in that it further comprises a primary throttling mechanism (7);

one end of the main throttling mechanism (7) is communicated with the condenser (3), and the other end of the main throttling mechanism (7) is communicated with the evaporator (4) and used for throttling and cooling a refrigerant flowing out of the condenser (3) and then sending the refrigerant into the evaporator (4).

11. The electrical apparatus according to claim 9, characterized in that it further comprises a solenoid valve (8);

one end of the electromagnetic valve (8) is communicated with the condenser (3), and the other end of the electromagnetic valve is communicated with the primary throttling mechanism (5) and used for conducting or stopping the condenser (3) and the primary throttling mechanism (5).

12. The electrical equipment according to claim 11, characterized in that it further comprises a temperature sensor and a controller electrically connected to said temperature sensor and in control connection with said solenoid valve (8);

the temperature sensor is arranged on the variable frequency driver (113) and used for detecting the temperature of the variable frequency driver (113), and the controller is used for controlling the electromagnetic valve (8) to be powered on or powered off according to the detection value of the temperature sensor.

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