CN223204458U - Electrical boxes and air conditioners - Google Patents

Abstract

The present application relates to an electrical box and an air conditioner. The electrical box includes a heating element, a heat dissipation structure, and a heat dissipation element. The heat dissipation element is disposed in contact with the heating element, and heat from the heating element can be transferred to the heat dissipation element. The heat dissipation element is provided with a cavity, and a refrigerant is disposed within the cavity, and the refrigerant can exchange heat with the heating element. The heat dissipation structure is attached to the heating element, which has a simple structure and good heat dissipation effect. The heat dissipation structure utilizes the refrigerant for heat exchange, effectively preventing heat accumulation, improving the temperature rise problem of the electrical box, enhancing the performance of the electrical box, and providing a strong guarantee for the stable operation of the air conditioner.

Description

Electrical box and air conditioner

Technical Field

The application relates to the technical field of heat dissipation, in particular to an electric box and an air conditioner.

Background

In the multi-connected outdoor unit system, an electric box is used as a key component, and a plurality of precise electronic components such as a control circuit board, a sensor, a relay and the like are integrated, so that the running stability and the service life of the multi-connected outdoor unit system directly influence the performance and the reliability of the whole air conditioning system. However, the outdoor unit is exposed to the outdoor environment for a long period of time, and is vulnerable to external factors such as dust, small organisms (e.g., insects), moisture, etc. If the negative factors penetrate through the ventilation holes of the electric box, dust can be accumulated on the surface of the electronic components to influence the heat dissipation efficiency of the electronic components, and the electronic components are possibly wetted due to the increase of humidity, so that serious problems such as short circuit, overhigh surface temperature, damage to the electronic components and the like are caused.

In order to solve the problems, the design scheme of the fully sealed electric box is widely adopted in the industry. According to the scheme, the ventilation holes of the electrical box are thoroughly sealed, so that invasion of external pollutants is effectively isolated, and the failure rate of electronic components caused by environmental factors is remarkably reduced. However, the design scheme brings a new technical problem while bringing protection advantages, a large amount of heat can be generated in the operation process of electronic components in the electric box, and the fully-sealed design blocks the way that the heat is emitted to the outside through natural convection or forced ventilation, so that the heat is accumulated in the electric box continuously. The aging process of the electronic components can be accelerated in a long-time high-temperature environment, the working efficiency of the electronic components is reduced, and even the electronic components are directly damaged, so that the normal operation and the service life of the whole air conditioning system are affected.

The technical proposal in the related art often needs to balance between tightness and heat dissipation, so as to prevent external pollutants from entering, and ensure good heat dissipation performance in the electric box so as to protect electronic components from being damaged by high temperature. Therefore, how to ensure the electrical box to avoid the damage of external environment and effectively solve the problem of internal heat accumulation at the same time becomes a technical problem to be solved in the field of multi-connected outdoor units.

Disclosure of utility model

The application provides an electric appliance box and an air conditioner, which can balance tightness and heat dissipation, effectively improve the temperature rise problem and avoid heat accumulation in the electric appliance box.

In a first aspect, the application provides an electrical box, which comprises a heating element, wherein the electrical box comprises a heat dissipation structure, the heat dissipation structure comprises a heat dissipation element, the heat dissipation element is attached to the heating element, and the heat of the heating element can be conducted to the heat dissipation element;

The heat dissipation element is provided with a cavity, and a refrigerant is arranged in the cavity and can exchange heat with the heating element.

In one possible implementation manner, the heat dissipation element includes a first heat dissipation core and/or a second heat dissipation core, and the first heat dissipation core and the second heat dissipation core are respectively connected with the corresponding heating element.

In one possible implementation manner, the first heat dissipation core has a first cavity, the second heat dissipation core has a second cavity, the first cavity and the second cavity are disposed in communication, and the first cavity and the second cavity together form the cavity.

In one possible implementation, the first heat dissipation core is provided with an inlet end and an outlet end.

In one possible implementation, the second heat dissipation core is provided with at least one groove.

In one possible implementation manner, the heat dissipation element includes a heat dissipation layer, and the heat dissipation layer is disposed on the first heat dissipation core and/or the second heat dissipation core, and the heat dissipation layer is connected with the corresponding heating element.

In one possible implementation manner, the heat dissipation layer comprises a connection layer and a plurality of heat dissipation fins, wherein the plurality of heat dissipation fins are respectively connected with the connection layer and are sequentially arranged at intervals along a preset direction, and the preset direction is parallel to the cross section of the first heat dissipation core body;

The heat dissipation fins are connected with the first heat dissipation core body, and the connecting layers are connected with the corresponding heating elements.

In one possible implementation, the heat dissipation layer includes a first heat conduction layer sandwiched between the heating element and the connection layer.

In one possible implementation, the heat dissipation layer includes a second heat conduction layer sandwiched between the heating element and the second heat dissipation core.

In one possible implementation, the heat dissipation layer includes a heat dissipation pad disposed between the second heat conduction layer and the second heat dissipation core, and/or,

The heat dissipation cushion block is arranged between the second heat conduction layer and the heating element.

In one possible implementation manner, the second heat conducting layer is provided with a containing groove, and the heat dissipation cushion block is arranged in the containing groove.

In a second aspect, the present application provides an air conditioner, comprising an access box, a junction box and the electrical box according to the first aspect, wherein the access box and the junction box are respectively connected with the electrical box.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:

According to the electric appliance box and the air conditioner provided by the embodiment of the application, the heat radiating structure is attached to the heating element, so that the electric appliance box and the air conditioner have the characteristics of simple structure and good heat radiating effect, the heat radiating structure utilizes the refrigerant to perform heat exchange, so that heat accumulation is effectively avoided, the temperature rise problem of the electric appliance box is improved, the performance of the electric appliance box is improved, and powerful guarantee is provided for the stable operation of the air conditioner.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present application;

Fig. 2 is a schematic structural diagram of a heat dissipation structure according to an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of a first heat dissipation core according to an embodiment of the present application;

fig. 4 is a schematic cross-sectional view of a second heat dissipation core according to an embodiment of the present application.

Reference numerals illustrate:

A. The electric appliance box comprises a heating element, a driving plate, a circuit board, a filter plate, a choke coil and a filter plate, wherein the heating element comprises a heating element, a driving plate, a circuit board, a filter plate and a choke coil;

2. Heat dissipating structure, 21, heat dissipating element, 211, cavity, 212, first heat dissipating core, 2121, first cavity, 2122, inlet end, 2123, outlet end, 213, second heat dissipating core, 2131, second cavity, 2132, groove, 21321, first groove, 21322, second groove, 2133, press intelligent power module area, 214, first pipe, 215, second pipe, 216, inflow pipe, 217, outflow pipe, 218, heat dissipating layer, 2181, connecting layer, 2182, heat dissipating fin, 2183, first heat conducting layer, 2184, second heat conducting layer, 21841, receiving groove, 21842, fan intelligent power module area, 2185, heat dissipating pad;

3. 31 parts of the shell, 31 parts of the air duct cavity, 4 parts of the maintenance box and 5 parts of the junction box.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "upper," "above," "front," "rear," and the like, may be used herein to describe one element's or feature's relative positional relationship or movement to another element's or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures experiences a positional reversal or a change in attitude or a change in state of motion, then the indications of these directives will also correspondingly change, e.g., an element described as "under" or "under" another element or feature will then be oriented "over" or "over" the other element or feature. Thus, the example term "below" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

In the related art, in the design and manufacture of electronic devices, particularly air conditioners, an electrical box is used as a carrier of a core component, and internal temperature management thereof is of great importance. With the continuous improvement of the integration level of electronic components and the increase of the power density, the heat generated in the electric box also rises sharply, and if the heat cannot be effectively and timely dissipated, the performance stability, the service life and the safe operation of the whole equipment of the electronic components are seriously affected. In order to solve the problem of temperature rise inside the electrical box, a heat dissipation design scheme of a built-in fan is generally adopted in the industry. According to the scheme, through the forced convection effect of the fan, the flow of air in the electric box is accelerated, so that the rapid heat transfer and dissipation are realized, the uniform temperature distribution in the electric box is ensured, and the local overheating is avoided. However, this type of heat dissipation, which relies on fans, has gradually revealed many drawbacks in practical applications.

For example, fans have a limited life. The fan as a mechanical component operates on a motor drive, which is prone to increased wear over time, thereby reducing service life. In addition, the parts such as the bearing and the blade of the fan are also susceptible to dust, foreign matters and the like, further reducing the reliability and durability thereof.

Such as after-market maintenance difficulties. Once the fan fails, the electrical box is often required to be disassembled for replacement or maintenance, which not only increases maintenance difficulty and cost, but also may cause equipment damage or performance degradation due to improper operation in the maintenance process. At the same time, the replacement cycle of the fan also increases the maintenance and time costs of the device.

Such as noise and energy consumption problems. The fan can generate certain noise when running to influence the use experience of a user, and meanwhile, the energy consumption of the fan is a non-negligible part, and the energy efficiency ratio of the whole equipment is adversely affected especially under the condition of long-time running.

Based on the technical problems, the application provides the electric appliance box, and the heat radiating structure is attached to the heating element, so that the electric appliance box has the characteristics of simple structure and good heat radiating effect, and the heat radiating structure utilizes the refrigerant to perform heat exchange, so that heat accumulation is effectively avoided, the temperature rise problem of the electric appliance box is improved, the performance of the electric appliance box is improved, and powerful guarantee is provided for the stable operation of an air conditioner.

First embodiment

As shown in fig. 1-4, an electrical box is applied to electronic equipment, especially design and manufacture of household appliances and industrial control equipment, and the electronic equipment such as air conditioners and other equipment needing power supply is used for ensuring normal operation of the electronic equipment and meeting requirements of users.

The electrical box comprises one, two or more heating elements 1, wherein the heating elements 1 are electronic components to support the performance of the electrical box. The heating element 1 is, for example, but not limited to, an electronic component such as a drive board 11, a circuit board 12, a filter board 13, a choke coil 14, a sensor, and a relay.

Here, the driving board 11, the circuit board 12, the filter board 13, the choke coil 14, the sensor, and the relay are common electronic components in the electrical box, and the functions and the installation methods thereof are conventional technical means. For example, the driving board 11 is one of main sources of heat generation, and the driving board 11 includes, for example, a press intelligent power module (INTELLIGENT POWER MODULE, abbreviated as IPM) which is an advanced power switching device integrated with modules such as an IGBT (insulated gate bipolar transistor), a driving circuit, a protection circuit, and a control interface, and a fan intelligent power module which is an intelligent power module based on IPM technology for driving and controlling a motor. The circuit board 12 integrates a plurality of control chips and electronic components for performing complex logic operations and control tasks, as well as generating a certain amount of heat. The filter board 13 is used for filtering noise in the power supply or the signal to ensure the circuit stability, but elements such as a resistor, a capacitor and the like on the filter board can also generate heat in the operation process. The choke coil 14 is used for limiting the current change rate and preventing the current abrupt change from causing impact to the circuit, and the heat generation phenomenon is also accompanied. The sensor is used for monitoring environmental parameters such as temperature, humidity and the like, and the heat dissipation problem is considered under long-time operation although the heat productivity is relatively small. The relay is used for on-off control of a circuit, and contacts of the relay generate heat when the contacts are frequently switched. The actual situation is specific, and detailed description thereof is omitted here.

The electrical box comprises a heat dissipation structure 2, wherein the heat dissipation structure 2 comprises a heat dissipation element 21, and the heat dissipation element 21 is made of high heat conduction materials, such as aluminum alloy or copper alloy, so that good heat conduction performance is ensured. The heat dissipation element 21 is closely attached to the back surface of the heating element 1 (such as the driving board 11, the circuit board 12, etc.), and the heat of the heating element 1 is rapidly transferred to the surface of the heat dissipation element 21 through heat conduction, so as to improve the temperature rise condition of the heating element 1.

The heat dissipation element 21 is provided with a cavity 211, and the cavity 211 is filled with a refrigerant (not shown in the figure), wherein the refrigerant is in a liquid state, such as purified water, an environment-friendly refrigerant, and the like. When the heating element 1 operates, a large amount of heat can be generated to influence the performance of the electrical box, and the refrigerant in the heat dissipation element 21 can exchange heat with the heating element 1 to improve the temperature rise problem, avoid heat accumulation and improve the performance of the electrical box. After absorbing the heat transferred from the heating element 1, the refrigerant exchanges heat with the external environment by evaporation, convection, or the like, thereby lowering the temperatures of the heat radiating element 21 and the heating element 1. The circulation of the refrigerant can be assisted by an external cooling system (such as a condenser of an air conditioner) to form a closed loop heat dissipation system.

Through the design, when the electric box in the embodiment operates in an air conditioner, the temperature rise of internal electronic components can be effectively reduced, and the problems of performance reduction, service life shortening, even faults and the like caused by high temperature are avoided. Meanwhile, due to the adoption of the environment-friendly refrigerant and the efficient heat dissipation structure 2, the overall performance of the equipment is improved, and the environment-friendly heat dissipation device meets the environment-friendly requirement of environmental protection and energy conservation.

According to the electrical box provided by the embodiment, the heat radiating structure 2 is configured by integrating the plurality of heating elements 1, and the heat radiating structure 2 utilizes the liquid refrigerant to realize heat exchange, so that the efficient heat radiation of electronic components in the electronic equipment such as an air conditioner is realized, and a powerful guarantee is provided for the stable operation of the electronic equipment. The design has the advantages of simple structure, good heat dissipation effect, environmental protection, energy saving and the like, and can be widely applied to various electronic equipment needing efficient heat dissipation.

Second embodiment

As shown in fig. 1 to 4, the electrical box includes a heating element 1 and a heat dissipation structure 2, and the structural form and the arrangement manner of the heating element 1 are the same as those of the heating element 1 in the first embodiment, and the description thereof will not be repeated here. The heat dissipation structure 2 includes the heat dissipation element 21, the structural form and the arrangement mode of the heat dissipation element 21 are the same as or similar to those of the heat dissipation element 21 in the first embodiment, and the difference is that the heat dissipation element 21 includes the first heat dissipation core 212, so that a targeted heat dissipation system is realized, and the heat dissipation capability of the electrical box is effectively improved.

The first heat dissipation core 212 has a first cavity 2121, and the first heat dissipation core 212 is connected to the corresponding heating element 1 to cool the corresponding heating element 1. For example, the filter plate 13 is connected to the choke 14, and the choke 14 is connected to the first heat dissipation core 212. The first cavity 2121 may be one or more, and the plurality of first cavities 2121 are disposed in communication to ensure normal circulation of the refrigerant.

The first heat dissipation core 212 dissipates heat in a targeted manner, so that the optimal configuration of heat dissipation resources is realized. For example, in an electronic device, the choke 14 operating at high frequency may generate a large amount of heat, with the primary heat dissipation core 212 focusing on heat dissipation.

In the present embodiment, as shown in fig. 1 to 4, the first heat dissipation core 212 is provided with an inlet end 2122 and an outlet end 2123 to enable inflow and outflow of the refrigerant. The inlet end 2122 is provided with an inlet pipe 216, the outlet end 2123 is provided with an outlet pipe 217, and the inlet pipe 216 and the outlet pipe 217 are respectively connected with an external cooling system (such as a condenser of an air conditioner) to form a closed loop heat dissipation system, so that circulation flow continuously dissipates heat for the heating element 1, and heat dissipation effect is improved. The inlet 2122 is responsible for introducing the cooled refrigerant, and the outlet 2123 discharges the heat-absorbed refrigerant, so as to realize effective heat transfer.

The refrigerant is circulated, for example, by an external cooling system (e.g., an air conditioner condenser) to cool the refrigerant, and then is sent to the inlet end 2122 of the first heat dissipation core 212 through the inlet pipe 216. The refrigerant flows in the first cavity 2121, absorbs heat from the heating element 1 (e.g., choke 14 connected to filter plate 13) in contact therewith, and finally returns to the external cooling system through the outflow pipe 217, completing a complete cycle.

According to the embodiment, through the heat radiation structure 2, the optimized refrigerant flow path and the structural design are combined, so that the heat radiation efficiency is improved, and the targeted heat radiation of the heating element 1 is realized.

Third embodiment

As shown in fig. 1 to 4, the electrical box includes a heating element 1 and a heat dissipation structure 2, and the structural form and the arrangement manner of the heating element 1 are the same as those of the heating element 1 in the first embodiment, and the description thereof will not be repeated here. The heat dissipation structure 2 includes the heat dissipation element 21, and the structural form and the arrangement manner of the heat dissipation element 21 are the same as or similar to those of the heat dissipation element 21 in the first embodiment, which is different in that the heat dissipation element 21 includes the second heat dissipation core 213, so that a targeted heat dissipation system is realized, and the heat dissipation capability of the electrical box is effectively improved.

The second heat dissipation core 213 has a second cavity 2131, and the second heat dissipation core 213 is connected to the corresponding heating element 1 to cool down different heating elements 1. The drive plate 11 is connected with the circuit board 12, and the circuit board 12 is connected with the second heat dissipation core 213, has realized the heat dissipation of pertinence, satisfies the demand of heat dissipation. The second cavity 2131 may be one or more, and the plurality of second cavities 2131 are disposed in communication to ensure normal circulation of the refrigerant.

The second heat dissipation core 213 dissipates heat for different heating elements 1, so that the optimal configuration of heat dissipation resources is realized. For example, in the electronic device, other components on the circuit board 12 dissipate heat through the second heat dissipation core 213, so as to ensure stable operation of the whole system.

In this embodiment, as shown in fig. 1 to 4, the second heat dissipation core 213 is provided with an inlet end (not shown in the drawings) and an outlet end (not shown in the drawings), and the setting logic and the heat dissipation logic of the second heat dissipation core 213 are the same as or similar to those of the first heat dissipation core 212 in the second embodiment, and the description thereof will not be repeated here. Namely, the inlet end and the outlet end can realize inflow and outflow of the refrigerant and are connected with an external cooling system (such as a condenser of an air conditioner) to form a closed loop cooling system, so that the circulating flow continuously dissipates heat for the heating element 1, and the heat dissipation effect is improved. The inlet end is responsible for introducing the cooled refrigerant, and the outlet end discharges the refrigerant after absorbing heat, so that the heat is effectively transferred.

The refrigerant is circulated, for example, by an external cooling system (such as an air conditioner condenser) to cool the refrigerant and then send the cooled refrigerant to the inlet end of the first heat dissipation core 212. The refrigerant flows in the second cavity 2131, absorbs heat from the heat generating component 1 (e.g., circuit board 12) in contact therewith, and then flows back to the external cooling system, completing a complete cycle.

In the present embodiment, as shown in fig. 1 to 4, the second heat dissipation core 213 is provided with a groove 2132 to reduce the size or volume of the second heat dissipation core 213 and reduce the cost. It will be appreciated that the grooves 2132 may be provided in one or two or more, as the case may be.

Illustratively, the recess 2132 includes, for example, a first recess 21321, and two opposite sidewalls of the second heat dissipating core 213 are each provided with the first recess 21321 to reduce the size of the second heat dissipating core 213 in the cross-sectional direction. Or the groove 2132 includes, for example, the second groove 21322, and the bottom wall of the second heat dissipation core 213 is provided with the second groove 21322 to reduce the size of the second heat dissipation core 213 in the thickness direction. By changing the local structure of the second heat dissipation core 213, the size and weight of the second heat dissipation core 213 is reduced, while maintaining a sufficient heat dissipation area, achieving cost-effectiveness maximization.

According to the embodiment, through the heat radiation structure 2, the optimized refrigerant flow path and the structural design are combined, so that the heat radiation efficiency is improved, and the targeted heat radiation of the heating element 1 is realized. Meanwhile, by introducing the design of the grooves 2132, the size and the cost of the heat dissipation element 21 are effectively reduced, and an efficient and economical solution is provided for the heat dissipation problem in the fields of electronic equipment, industrial control equipment and the like.

Fourth embodiment

As shown in fig. 1 to 4, the electrical box includes a heating element 1 and a heat dissipation structure 2, and the structural form and the arrangement manner of the heating element 1 are the same as those of the heating element 1 in the first embodiment, and the description thereof will not be repeated here. The heat dissipation structure 2 includes the heat dissipation element 21, and the structural form and the arrangement manner of the heat dissipation element 21 are the same as or similar to those of the heat dissipation element 21 in the first embodiment, which is different in that the heat dissipation element 21 includes the first heat dissipation core 212 and the second heat dissipation core 213, so that a high-efficiency dual-core heat dissipation system is realized, and the heat dissipation capability of the electrical box is effectively improved.

The first heat dissipation core 212 has a first cavity 2121, and the first heat dissipation core 212 is connected to the corresponding heating element 1 to cool the corresponding heating element 1. For example, the filter plate 13 is connected to the choke 14, and the choke 14 is connected to the first heat dissipation core 212.

The second heat dissipation core 213 has a second cavity 2131, and the second heat dissipation core 213 is connected to the corresponding heating element 1 to cool down different heating elements 1. The drive plate 11 is connected with the circuit board 12, and the circuit board 12 is connected with the second heat dissipation core 213, has realized the heat dissipation of pertinence, satisfies the demand of heat dissipation.

The first heat dissipation core 212 and the second heat dissipation core 213 respectively dissipate heat for different heating elements 1, so that the optimal configuration of heat dissipation resources is realized. For example, in an electronic device, the choke 14 operating at high frequency may generate a large amount of heat, with the primary heat dissipation core 212 focusing on heat dissipation. And other components on the circuit board 12 dissipate heat through the second heat dissipation core 213, so as to ensure the stable operation of the whole system.

The first cavity 2121 and the second cavity 2131 are disposed in communication with each other to form a bidirectional flow path for the refrigerant, and the first cavity 2121 and the second cavity 2131 together form the cavity 211.

Illustratively, a first pipe 214 and a second pipe 215 are disposed between the first heat dissipating core 212 and the second heat dissipating core 213, the first pipe 214 is respectively communicated with the first heat dissipating core 212 and the second heat dissipating core 213, and the second pipe 215 is respectively communicated with the first heat dissipating core 212 and the second heat dissipating core 213 to realize the communication of the refrigerant between the first cavity 2121 and the second cavity 2131. For example, the first pipe 214 allows the refrigerant to flow from the first cavity 2121 into the second cavity 2131, and the second pipe 215 realizes the reverse flow of the refrigerant, so as to ensure the uniform distribution of the refrigerant between the dual cores and improve the heat dissipation efficiency.

The present embodiment aims to provide an efficient and flexible heat dissipation system, which is particularly suitable for application scenarios, such as choke 14, circuit board 12, etc., where independent and efficient heat dissipation is required for a plurality of heating elements 1. Through adopting the heat radiation structure 2 of twin-core, combine the refrigerant circulation route and the structural design of optimizing, promote heat dispersion, reasonable control cost.

In the present embodiment, as shown in fig. 1 to 4, the first heat dissipation core 212 is provided with an inlet end 2122 and an outlet end 2123 to enable inflow and outflow of the refrigerant. The inlet end 2122 is provided with an inlet pipe 216, the outlet end 2123 is provided with an outlet pipe 217, and the inlet pipe 216 and the outlet pipe 217 are respectively connected with an external cooling system (such as a condenser of an air conditioner) to form a closed loop heat dissipation system, so that circulation flow continuously dissipates heat for the heating element 1, and heat dissipation effect is improved. The inlet 2122 is responsible for introducing the cooled refrigerant, and the outlet 2123 discharges the heat-absorbed refrigerant, so as to realize effective heat transfer.

The refrigerant is circulated, for example, by an external cooling system (e.g., an air conditioner condenser) to cool the refrigerant, and then is sent to the inlet end 2122 of the first heat dissipation core 212 through the inlet pipe 216. The refrigerant flows in the first cavity 2121, absorbs heat of the heating element 1 (e.g., the choke coil 14 connected to the filter plate 13) in contact therewith, and then enters the second cavity 2131 of the second heat dissipation core 213 through the first pipe 214. In the second cavity 2131, the refrigerant continues to absorb heat from another set of heat generating components 1 (e.g., circuit board 12), then flows back to the first heat sink core 212 through the second conduit 215, and finally returns to the external cooling system through the outflow conduit 217, completing a complete cycle.

In the present embodiment, as shown in fig. 1 to 4, the second heat dissipation core 213 is provided with a groove 2132 to reduce the size or volume of the second heat dissipation core 213 and reduce the cost. It will be appreciated that the grooves 2132 may be provided in one or two or more, as the case may be.

Illustratively, the recess 2132 includes, for example, a first recess 21321, and two opposite sidewalls of the second heat dissipating core 213 are each provided with the first recess 21321 to reduce the size of the second heat dissipating core 213 in the cross-sectional direction. Or the groove 2132 includes, for example, the second groove 21322, and the bottom wall of the second heat dissipation core 213 is provided with the second groove 21322 to reduce the size of the second heat dissipation core 213 in the thickness direction. By changing the local structure of the second heat dissipation core 213, the size and weight of the second heat dissipation core 213 is reduced, while maintaining a sufficient heat dissipation area, achieving cost-effectiveness maximization.

According to the embodiment, through the adoption of the double-core heat dissipation structure 2 and the combination of an optimized refrigerant flow path and a structural design, the heat dissipation efficiency is improved, and the targeted heat dissipation of a plurality of heating elements 1 is realized. Meanwhile, by introducing the design of the grooves 2132, the size and the cost of the heat dissipation element 21 are effectively reduced, and an efficient and economical solution is provided for the heat dissipation problem in the fields of electronic equipment, industrial control equipment and the like.

Fifth embodiment

As shown in fig. 1 to 4, the electrical box includes a heating element 1 and a heat dissipation structure 2, and the structural form and the arrangement manner of the heating element 1 are the same as those of the heating element 1 in the first embodiment, and the description thereof will not be repeated here. The heat dissipation structure 2 includes a heat dissipation element 21, and the heat dissipation element 21 is configured in the same or similar manner as the heat dissipation element 21 in the fourth embodiment or the second embodiment, except that the heat dissipation element 21 further includes a heat dissipation layer 218 to enhance the heat dissipation effect.

First example

The heat dissipation layer 218 may be disposed on the first heat dissipation core 212 to further enhance the heat dissipation capability of the electrical box, where the heat dissipation layer 218 is connected to the corresponding heating element 1 to achieve rapid cooling of the heating element 1. The heat dissipation layer 218 is made of a high heat conductive material, such as aluminum, heat conductive silica gel, etc., to ensure good heat conductive performance.

In particular, the heat dissipation layer 218 is tightly adhered to the first heat dissipation core 212 by heat-conducting glue or mechanical fasteners, and is in direct contact with the heating element 1 (e.g., the choke 14) or indirectly connected through a heat-conducting medium.

When the heating element 1 works, generated heat can be quickly transferred to the heat dissipation layer 218 through the heat conduction medium and then efficiently diffused into the surrounding environment through the heat dissipation layer 218, so that the rapid cooling of the heating element 1 is realized, the internal temperature of the electric box is effectively prevented from being too high, and the stable operation of electronic components is ensured.

Second example

The heat dissipation layer 218 may be disposed on the second heat dissipation core 213 to further enhance the heat dissipation capability of the electrical box, where the heat dissipation layer 218 is connected to the corresponding heating element 1 to achieve rapid cooling of the heating element 1. The structural form of the heat dissipation layer 218 is the same as or similar to that of the heat dissipation layer 218 in the first example, and the description thereof will not be repeated here.

In a specific installation, the heat dissipation layer 218 is tightly attached to the second heat dissipation core 213 by heat-conducting glue or a mechanical fastener, and is directly contacted with the heating element 1 (such as the circuit board 12) or indirectly connected through a heat-conducting medium.

When the heating element 1 works, generated heat can be quickly transferred to the heat dissipation layer 218 through the heat conduction medium and then efficiently diffused into the surrounding environment through the heat dissipation layer 218, so that the rapid cooling of the heating element 1 is realized, the internal temperature of the electric box is effectively prevented from being too high, and the stable operation of electronic components is ensured.

Third example

The first heat dissipation core 212 and the second heat dissipation core 213 are respectively provided with a heat dissipation layer 218, the heat dissipation layers 218 are respectively and independently configured, the first heat dissipation core 212 and the second heat dissipation core 213 are optimally designed according to the layout and the heat distribution condition of the heating element 1 in the electrical box, and the heat dissipation tasks of different areas are respectively born. The structural form of the heat dissipation layer 218 is the same as or similar to that of the heat dissipation layer 218 in the first and second examples, and the description thereof will not be repeated here.

Each heat dissipation layer 218 is connected to the corresponding heat generating element 1 directly or through a heat conducting medium, ensuring that heat is quickly and efficiently conducted from the heat generating element 1 to the heat dissipation layer 218 and dissipated to the surrounding environment through the surface of the heat dissipation layer 218. The configuration of the dual heat dissipation core combined with the independent heat dissipation layer 218 further improves the overall heat dissipation capability of the electrical box, and is particularly suitable for the design of electrical boxes with relatively dispersed distribution of the heating elements 1 or relatively large heat generation.

In the above three examples, different configurations of the heat dissipation layer 218 in the heat dissipation element 21 are shown, so that the heat dissipation capability of the electrical box can be effectively improved, and the stability and reliability of the electronic component under long-time high-load operation can be ensured.

Sixth embodiment

As shown in fig. 1-4, in order to further improve the heat dissipation efficiency of the heating element 1 in the electrical box, the heat dissipation structure 2 is improved based on the above technology, and particularly, the heat dissipation layer 218 of the heat dissipation element 21 is optimized, and the heat conduction and heat dissipation capability is significantly improved by adding the heat dissipation fins 2182 and the first heat conduction layer 2183.

In this embodiment, as shown in fig. 1 to 4, the electrical box includes a heating element 1 and a heat dissipation structure 2, and the structural form and the arrangement manner of the heating element 1 are the same as or similar to those of the heating element 1 in the first embodiment, and the description thereof will not be repeated here. The heat dissipation structure 2 includes a heat dissipation element 21, and the heat dissipation element 21 is configured in the same or similar manner to the heat dissipation element 21 in the fifth embodiment, except that the heat dissipation layer 218 includes a connection layer 2181 and a plurality of heat dissipation fins 2182.

The plurality of radiating fins 2182 are respectively connected with the connecting layer 2181, the plurality of radiating fins 2182 are vertically arranged and are sequentially arranged at intervals according to a preset direction (such as a direction parallel to the cross section of the first radiating core 212), and the arrangement mode effectively increases the radiating area and accelerates the convection and radiation of heat, so that the radiating efficiency is improved.

The above description of the orientation is given by way of example only, and the present application is not limited to the orientation shown in the drawings. If the heating element 1 is placed in other manners, the heat dissipation layer 218 is placed synchronously, which is the case in practice.

The heat dissipation fins 2182 are connected to the first heat dissipation core 212, and the connection layer 2181 is connected to the corresponding heat generating element 1 to receive heat of the heat generating element 1. The connection layer 2181 serves as a bridge between the heat dissipation fins 2182 and the heating element 1, and the shape of the connection layer is adaptively designed according to the specific shape of the heating element 1. For example, when the heating element 1 is the choke coil 14, the connection layer 2181 is designed in a half-arc shape to closely fit the choke coil 14, and the radius of the connection layer 2181 is larger than 1mm to 5mm of the choke coil 14, so as to ensure that the connection layer 2181 can completely cover the choke coil 14. If the heating element 1 is a flat-plate-shaped sensor or a filter plate 13 with concave-convex surface, the connection layer 2181 is adjusted to be flat-plate-shaped or concave-convex accordingly, so as to ensure good thermal contact and conduction, in particular, according to practical situations.

In this embodiment, as shown in fig. 1 to 4, the heat dissipation layer 218 further includes a first heat conduction layer 2183, and the first heat conduction layer 2183 is sandwiched between the heating element 1 and the connection layer 2181. The first heat conductive layer 2183 is, for example, a silica gel heat conductive pad.

To further optimize the conduction path of heat from the heating element 1 to the heat dissipation layer 218, the present embodiment adds a first heat conduction layer 2183 between the heating element 1 and the connection layer 2181. The first heat conducting layer 2183 is made of a material with high heat conducting performance, such as a silica gel heat conducting pad, and has excellent heat conducting performance, so that heat loss can be remarkably reduced in the conducting process, and heat can be ensured to be quickly and efficiently transferred to the heat dissipating layer 218 and further dissipated to the surrounding environment through the heat dissipating fins 2182.

The heat dissipation structure 2 of the electrical box in the embodiment remarkably improves the heat dissipation performance while maintaining the original compact layout. The addition of the heat radiating fins 2182 and the introduction of the first heat conducting layer 2183 jointly form a high-efficiency and flexible heat conduction and emission system, so that the working temperature of the heating element 1 is effectively reduced, the service life of the heating element is prolonged, and the stability and reliability of the whole electrical box are improved.

Seventh embodiment

As shown in fig. 1 to 4, in order to further improve the heat dissipation efficiency of the heating element 1 in the electrical box, particularly, the heat conduction efficiency between the heating element and the heat dissipation structure 2 is optimized and improved based on the above-mentioned technology. By introducing the second heat conducting layer 2184 in the heat dissipating structure 2, the thermal coupling between the heat generating element 1 and the heat dissipating element 21 is effectively enhanced, thereby achieving more efficient heat transfer and dissipation.

In this embodiment, as shown in fig. 1 to 4, the electrical box includes a heating element 1 and a heat dissipation structure 2, and the structural form and the arrangement manner of the heating element 1 are the same as or similar to those of the heating element 1 in the first embodiment, and the description thereof will not be repeated here. The heat dissipation structure 2 includes a heat dissipation element 21, and the heat dissipation element 21 is configured in the same or similar manner as the heat dissipation element 21 in the third embodiment or the fourth embodiment described above, except that the heat dissipation layer 218 includes a second heat conduction layer 2184.

The second heat conductive layer 2184 serves as a bridge for heat transfer between the heating element 1 and the second heat dissipation core 213, and is interposed therebetween. The second heat conductive layer 2184 is made of a material with high heat conductivity, such as a heat conductive silica gel pad. The heat-conducting silica gel pad not only has good heat conduction performance, but also can fill up a tiny gap between the heating element 1 and the second heat dissipation core 213, and forms a tight thermal contact interface. This design effectively reduces the thermal resistance of the heat during transfer, so that the heat generated by the heating element 1 can be quickly and efficiently conducted to the second heat-dissipating core 213 and further dissipated to the surrounding environment via the heat-dissipating element 21.

It should be noted that the second heat conductive layer 2184 may be disposed offset from the second heat dissipation core 213 so as to correspond to different heat generating elements 1.

On the second heat dissipation core 213, a press intelligent power module area 2133 is defined, and this area is optimally designed for the high heat generating characteristics of the press intelligent power module, so that it is directly connected with the second heat dissipation core 213 in a contact manner, so as to ensure that the heat generated by the press intelligent power module can be rapidly dissipated.

On the second thermally conductive layer 2184, a fan intelligent power module region 21842 is provided. Because the heat generation amount of the intelligent power module of the fan may be relatively low, or the heat dissipation requirement of the intelligent power module of the fan is different from that of the intelligent power module of the press, the design of the area may be more focused on accurate heat conduction, and the optimization of local heat dissipation is realized. For example, this region may be formed of a higher thermal conductivity material, or other high efficiency heat sink region that directs heat to the second heat sink core 213 via a specific thermal path design, as the case may be.

According to the heat dissipation layout optimization scheme provided by the embodiment, the second heat conduction layer 2184 and the second heat dissipation core 213 are staggered, and the heat dissipation requirements of different heating elements 1 are met, so that the heat dissipation efficiency is improved, the temperature of the electronic equipment is reduced, and powerful support is provided for the reliable operation of the electrical box.

By introducing the second heat conducting layer 2184, the heat dissipating structure 2 of the electrical box in the present embodiment significantly improves the heat conducting efficiency between the heating element 1 and the heat dissipating element 21 while maintaining the original compactness of the structure. This not only helps to reduce the operating temperature of the heating element 1 and extend its service life, but also improves the heat dissipation performance and stability of the whole electrical box. In addition, the addition of the second heat conducting layer 2184 does not increase excessive manufacturing cost and complexity, so that the optimization scheme has higher practicability and economy.

Eighth embodiment

As shown in fig. 1 to 4, in order to further improve the heat dissipation effect of the heating element 1 in the electrical box, especially for application scenarios of high power and high heat productivity, the heat dissipation structure 2 is further optimized and enhanced on the basis of the previous embodiment (e.g., the seventh embodiment). By introducing the heat dissipation cushion 2185 into the heat dissipation layer 218, heat transfer efficiency and heat dissipation area are effectively improved, and therefore more efficient heat dissipation performance is achieved.

In this embodiment, as shown in fig. 1 to 4, the electrical box includes a heating element 1 and a heat dissipation structure 2, and the structural form and the arrangement manner of the heating element 1 are the same as or similar to those of the heating element 1 in the first embodiment, and the description thereof will not be repeated here. The heat dissipating structure 2 includes the heat dissipating element 21, and the heat dissipating element 21 is configured in the same or similar manner to the heat dissipating element 21 in the seventh embodiment, except that the heat dissipating layer 218 further includes a heat dissipating pad 2185, and the heat dissipating pad 2185 is made of a material with high heat conductivity, such as an aluminum block, and is selected for its good heat conductivity and workability.

The heat dissipation pad 2185 can be flexibly disposed between the second heat conduction layer 2184 and the second heat dissipation core 213, so as to enhance the thermal coupling effect between the second heat conduction layer 2184 and the second heat dissipation core 213, and further reduce the thermal resistance. Meanwhile, according to practical needs, the heat dissipation pad 2185 may also be disposed between the second heat conducting layer 2184 and the heating element 1, so as to directly improve the heat transfer efficiency between the heating element 1 and the heat dissipation structure 2. The two setting modes can be used independently or in combination to achieve the best heat dissipation effect. The heat dissipation cushion 2185 can be used for heating elements 1 with different heights, so that the flexibility of the heat dissipation structure 2 is improved.

In the embodiment, the heat dissipation cushion 2185 is introduced into the heat dissipation structure 2 of the electrical box, so that the heat dissipation performance is further optimized and enhanced. The high heat-conducting property of the heat-radiating cushion block 2185 can further reduce the heat resistance encountered by heat in the transfer process, so that the heat transfer efficiency is improved, the heat-radiating area is increased, and a powerful guarantee is provided for efficient heat radiation of the electrical box. The optimization scheme has the advantages of simple structure, convenient implementation, obvious effect and the like, and can be widely applied to various electrical equipment needing efficient heat dissipation.

In this embodiment, as shown in fig. 1-4, in order to more precisely control the position of the heat dissipation pad 2185 and ensure the close contact between the heat dissipation pad 2185 and the second heat conduction layer 2184, so as to further improve the heat dissipation efficiency, a receiving groove 21841 is designed on the second heat conduction layer 2184 for precisely installing the heat dissipation pad 2185.

The shape, size and position of the accommodating groove 21841 are carefully calculated so as to ensure that the heat dissipation cushion 2185 can be perfectly embedded therein, and seamless butt joint is realized.

Illustratively, the accommodating groove 21841 is disposed on the top surface of the second heat-conducting layer 2184, so that the mounting process of the heat-dissipating cushion block 2185 is simplified, and the close fit between the heat-dissipating cushion block 2185 and the second heat-conducting layer 2184 is ensured, thereby minimizing the thermal resistance and improving the heat transfer efficiency.

Through the design of accommodation groove 21841, heat dissipation cushion 2185 can work more stably on second heat conduction layer 2184, has avoided the radiating efficiency decline problem that leads to because of offset or poor contact. Meanwhile, the high heat-conducting property of the heat dissipation cushion block 2185 is fully exerted, so that heat can be quickly and efficiently transferred to other parts of the heat dissipation system, such as the second heat dissipation core 213 and the like, and finally, the overall temperature of the electrical box is effectively reduced.

Wherein, accommodation groove 21841 can correspond to fan intelligent power module region 21842 for fan intelligent power module can correspond the setting with heat dissipation cushion 2185, has realized accurate heat conduction, and optimizes local heat dissipation, through specific heat path design, guide heat flow direction second heat dissipation core 213, realizes high-efficient heat dissipation.

Ninth embodiment

In the design and manufacturing process of the air conditioner, the electric box A is used as one of core components and is responsible for the functions of power distribution, control, protection and the like. Meanwhile, in order to facilitate subsequent maintenance and overhaul work and ensure safety and reliability of electrical connection, the overhaul box 4 and the junction box 5 are also indispensable components. The present embodiment proposes an air conditioner integrating the service box 4, the junction box 5, and the electrical box a in any of the above embodiments, realizing compact connection and efficient cooperative work between the components. The air conditioner is further provided with a shell 3, an air duct cavity 31 is formed in the shell 3, and the overhaul box 4, the junction box 5 and the electric box A are arranged in the air duct cavity 31.

The electrical box A is of a full-sealing structure, for example, and meets the protection requirement of the IP55 so as to prevent external factors such as dust, moisture and the like from entering the interior and ensure that electronic components can work normally. And the heat on the heating element 1 can be conducted to the heat dissipation structure 2, so that the temperature of the heat dissipation structure is reduced, the heat dissipation requirement of the heating element 1 is met, and the heat dissipation efficiency of the electric box A is effectively improved.

The maintenance box 4 and the electrical box A can be connected through screws, buckles and the like, so that the reliability in connection is improved.

The junction box 5 is used as a junction for electrical connection and is responsible for introducing an external power supply, control signals and the like into the interior of the electrical box. The junction box 5 and the electrical box A are connected in an easy-to-mount and easy-to-dismount manner, such as plug-in connection, threaded connection and the like, so as to ensure the firmness and the safety of electrical connection. Meanwhile, a reasonable wiring space and a reasonable identification system are further arranged in the junction box 5, so that a technician can conveniently connect and check the circuit.

By tightly combining the maintenance box 4, the junction box 5 and the electric box A, the air conditioner in the embodiment realizes compact connection among components and simplifies the internal structural layout and the assembly flow of the air conditioner. The integrated design not only improves the overall aesthetic degree and reliability of the air conditioner, but also reduces the production cost and maintenance difficulty, and brings more convenient and comfortable use experience for users.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (12)

1. The electric appliance box comprises a heating element and is characterized by comprising a heat dissipation structure, wherein the heat dissipation structure comprises a heat dissipation element, the heat dissipation element is attached to the heating element, and the heat of the heating element can be conducted to the heat dissipation element;

The heat dissipation element is provided with a cavity, and a refrigerant is arranged in the cavity and can exchange heat with the heating element.

2. The electrical box according to claim 1, wherein the heat dissipation element comprises a first heat dissipation core and/or a second heat dissipation core, the first heat dissipation core and the second heat dissipation core being respectively connected with the corresponding heat generation element.

3. The electrical box according to claim 2, wherein the first heat dissipation core has a first cavity, the second heat dissipation core has a second cavity, the first cavity and the second cavity are disposed in communication, and the first cavity and the second cavity together form the cavity.

4. The electrical box of claim 2, wherein the first heat sink core is provided with an inlet end and an outlet end.

5. The electrical box of claim 2, wherein the second heat sink core is provided with at least one recess.

6. The electrical box according to claim 2, wherein the heat dissipation element comprises a heat dissipation layer, the heat dissipation layer being disposed on the first heat dissipation core and/or the second heat dissipation core, the heat dissipation layer being connected to the corresponding heat generation element.

7. The electrical box according to claim 6, wherein the heat dissipation layer comprises a connection layer and a plurality of heat dissipation fins, the plurality of heat dissipation fins are respectively connected with the connection layer, and the plurality of heat dissipation fins are sequentially arranged at intervals along a preset direction, wherein the preset direction is parallel to the cross section of the first heat dissipation core;

The heat dissipation fins are connected with the first heat dissipation core body, and the connecting layers are connected with the corresponding heating elements.

8. The electrical box of claim 7, wherein the heat dissipation layer comprises a first thermally conductive layer sandwiched between the heating element and the connection layer.

9. The electrical box of claim 6, wherein the heat dissipation layer comprises a second thermally conductive layer sandwiched between the heating element and the second heat dissipation core.

10. The electrical box of claim 9, wherein the heat dissipation layer comprises a heat dissipation pad disposed between the second heat conduction layer and the second heat dissipation core, and/or,

The heat dissipation cushion block is arranged between the second heat conduction layer and the heating element.

11. The electrical box of claim 10, wherein the second heat conductive layer is provided with a receiving groove, and the heat dissipating pad is disposed in the receiving groove.

12. An air conditioner comprising an inspection box, a junction box and the electrical box according to any one of claims 1 to 11, wherein the inspection box and the junction box are connected to the electrical box, respectively.