Electric control box body and air conditioning unit

Abstract

The utility model provides an electric control box body and an air conditioning unit. The electric control box body comprises a plurality of wall plates, and a mounting cavity used for accommodating a power device is defined by the wall plates; wherein at least one wall plate is provided with a first heat dissipation area corresponding to the power device in the mounting cavity, the first heat dissipation area is provided with a first heat dissipation medium cavity, and a first heat dissipation medium is arranged in the first heat dissipation medium cavity. According to the utility model, a refrigerant radiator is not additionally arranged, but the first heat dissipation medium cavity is directly arranged on the wall plate of the electric control box body, so that the wall plate of the electric control box body can protect the power device and also has the function of the refrigerant radiator. According to the utility model, a refrigerant radiator and an air-cooled radiator do not need to be additionally configured, so that the size of the electric control box body can be reduced, and meanwhile, when the power device is maintained, the power device can be more conveniently disassembled, assembled and maintained without being influenced by the refrigerant radiator and the air-cooled radiator.

Description

Technical Field

[0001] The utility model belongs to the technical field of air-conditioning units, and particularly relates to an electric control box and an air-conditioning unit. Background Art

[0002] Multi-split air conditioner is a centralized cooling and heating air conditioning system, mainly composed of one or more indoor units and one or more outdoor units. It achieves indoor air cooling and heating through a series of working steps to provide users with a comfortable indoor environment.

[0003] The power devices such as the compressor drive module of the existing multi-split air conditioner are installed in the electric control box, and the heat is dissipated by the air-cooled radiator or refrigerant radiator in the electric control box. Among them, the air-cooled radiator is easy to install and maintain, but in order to have the required heat dissipation efficiency, the air-cooled radiator needs to be equipped with cooling fins, so the volume is relatively large, which makes the volume of the electric control box larger. The refrigerant radiator is generally arranged on the outer wall of the electric control box. Although it is smaller in size than the air-cooled radiator, it will still take up some space when installed on the outside of the electric control box. In addition, both the air-cooled radiator and the refrigerant radiator need to be installed in the electric control box, which will affect the disassembly and maintenance of the power devices inside the electric control box.

[0004] Therefore, how to reduce the volume of the electric control box and facilitate the disassembly, assembly and maintenance of power devices is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide an electric control box to reduce the volume of the electric control box and facilitate the disassembly and maintenance of power devices;

[0006] Another object of the utility model is to provide an air conditioning unit having the above-mentioned electric control box.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An electric control box body comprises a plurality of wall panels, and each wall panel encloses an installation cavity for accommodating a power device;

[0009] At least one of the wall panels has a first heat dissipation area, which is used to correspond to at least part of the power devices in the installation cavity. The first heat dissipation area is provided with a first heat dissipation medium cavity, and a first heat dissipation medium is arranged in the first heat dissipation medium cavity.

[0010] Optionally, in the above-mentioned electric control box, the first heat dissipation medium is a self-circulating refrigerant medium; and / or, the first heat dissipation medium cavity comprises:

[0011] A first medium storage cavity is located in the lower area of ​​the first heat dissipation area;

[0012] The first medium flow cavity is a plurality of spaced-apart lines, one end of which is connected to the first medium storage cavity and the other end of which extends to the upper area of ​​the first heat dissipation zone.

[0013] Optionally, in the above-mentioned electric control box, the first medium flow cavity comprises a first upward flow cavity and a first downward flow cavity which are arranged at intervals along the wall thickness direction of the first heat dissipation zone, the first upward flow cavity is closer to the inner wall of the first heat dissipation zone than the first downward flow cavity, and the lower ends of the first upward flow cavity and the first downward flow cavity are both connected to the first medium storage cavity;

[0014] The first medium flow chamber further includes a first medium communication chamber, and the upper ends of the first upward flow chamber and the first downward flow chamber are communicated with each other through the first medium communication chamber.

[0015] Optionally, in the above-mentioned electric control box, the installation cavity includes a plurality of installation areas along the height direction, the power device is installed in each of the installation areas, and the heat generated by the power device in the installation area at the bottom is greater than that of the power devices in other installation areas;

[0016] The first heat dissipation area at least corresponds to the lowermost mounting area.

[0017] Optionally, in the above-mentioned electric control box, the heat generation of the power devices in each of the installation areas decreases in sequence from bottom to top; and / or,

[0018] There are at least three installation areas, the installation area at the bottom is used to install power devices with high power and high heat dissipation requirements, the installation area at the top is used to install power devices with low power and low heat dissipation requirements, and the installation area in the middle is used to install power devices with high power and low heat dissipation requirements, the heat generated by the power devices with high power and high heat dissipation requirements is greater than that of the power devices with low power and low heat dissipation requirements, and the heat generated by the power devices with high power and low heat dissipation requirements is greater than that of the power devices with low power and low heat dissipation requirements; and / or,

[0019] At least one of the wall plates has a second heat dissipation area and a heat conductive bracket, one end of the heat conductive bracket is connected to the second heat dissipation area, and the other end at least abuts against the power device in the lowest mounting area.

[0020] Optionally, in the above-mentioned electric control box, a second heat dissipation medium cavity is opened in the second heat dissipation zone, a second heat dissipation medium is arranged in the second heat dissipation medium cavity, and the second heat dissipation medium is a self-circulating refrigerant medium.

[0021] Optionally, in the above-mentioned electric control box, the second heat dissipation medium cavity includes:

[0022] A second medium storage cavity is located in the lower area of ​​the second heat dissipation zone;

[0023] The second medium flow cavity is a plurality of spaced-apart lines, one end of which is connected to the second medium storage cavity and the other end of which extends to the upper area of ​​the second heat dissipation zone.

[0024] Optionally, in the above-mentioned electric control box, the second medium flow cavity comprises a second upward flow cavity and a second downward flow cavity arranged at intervals along the wall thickness direction of the second heat dissipation zone, the second upward flow cavity is closer to the inner wall of the second heat dissipation zone than the second downward flow cavity, and the lower ends of the second upward flow cavity and the second downward flow cavity are both connected to the second medium storage cavity;

[0025] The second medium flow chamber further includes a second medium communication chamber, and the upper ends of the second upward flow chamber and the second downward flow chamber are communicated with each other through the second medium communication chamber.

[0026] Optionally, in the above-mentioned electric control box, the first heat dissipation medium is directly disposed in the first heat dissipation medium cavity or is indirectly disposed in the first heat dissipation medium cavity through a first pipeline; and / or,

[0027] The second heat dissipation medium is directly disposed in the second heat dissipation medium cavity or is indirectly disposed in the second heat dissipation medium cavity through a second pipeline; and / or,

[0028] The first heat dissipation area is arranged on the back plate of the electric control box, and the second heat dissipation area is arranged on the front cover plate of the electric control box.

[0029] The electric control box provided by the utility model directly sets a first heat dissipation zone on at least one wall plate thereof, and opens a first heat dissipation medium cavity in the first heat dissipation zone, and fills the first heat dissipation medium in the first heat dissipation medium cavity. Since the first heat dissipation zone is arranged corresponding to the power device in the installation cavity, when the power device is installed, the heating end of the power device can be attached to the first heat dissipation zone to transfer the heat of the power device to the first heat dissipation zone. Since the first heat dissipation medium cavity in the first heat dissipation zone is provided with the first heat dissipation medium, the first heat dissipation medium can absorb the heat of the power device to reduce the temperature of the power device. The utility model does not configure a refrigerant radiator additionally, but directly opens a first heat dissipation medium cavity on the wall plate of the electric control box, so that the wall plate of the electric control box can not only protect the power device, but also has the function of a refrigerant radiator. Since the utility model does not need to configure a refrigerant radiator and an air-cooled radiator additionally, the volume of the electric control box can be reduced. At the same time, since there is no influence of the refrigerant radiator and the air-cooled radiator when maintaining the power device, it can also be more convenient to disassemble and maintain the power device.

[0030] An air conditioning unit comprises the electric control box as described in any one of the above items. As it has the above electric control box, it has all the technical effects of the above electric control box, which will not be described in detail in this article. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the internal structure of the electric control box provided in an embodiment of the utility model;

[0033] Figure 2 A cross-sectional view of the back plate provided by the embodiment of the utility model along a direction parallel to the inner wall;

[0034] Figure 3 A cross-sectional view of the back plate provided by an embodiment of the utility model along a direction parallel to the side wall;

[0035] Figure 4 A cross-sectional view of the back plate provided by an embodiment of the utility model along a direction parallel to the top wall;

[0036] Figure 5 A schematic diagram of the structure of the front cover provided by an embodiment of the utility model;

[0037] Figure 6 A side view of the front cover provided by an embodiment of the utility model;

[0038] Figure 7 This is a schematic diagram of the structure of the electric control box provided by an embodiment of the utility model after removing the power devices.

[0039] The meanings of the reference numerals in the figures are as follows:

[0040] 100-electric control box; 110-heat dissipation duct; 120-back panel; 130-front cover; 140-side panel;

[0041] 210 - first installation area; 220 - second installation area; 230 - third safety area;

[0042] 121 - first heat dissipation area; 122 - first medium flow cavity; 1221 - first upward flow cavity; 1222 - first downward flow cavity; 1223 - first medium communication cavity; 123 - first medium storage cavity;

[0043] 131 - a second heat dissipation area; 132 - a heat conductive bracket. DETAILED DESCRIPTION

[0044] The core of the utility model is to provide an electric control box to reduce the volume of the electric control box and facilitate the disassembly and maintenance of power devices;

[0045] Another core of the utility model is to provide an air conditioning unit having the above-mentioned electric control box.

[0046] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] In the prior art, both air-cooled radiators and refrigerant radiators need to be installed on the electric control box, which will inevitably occupy the space of the electric control box and also affect the disassembly and maintenance of the internal power devices. Based on this, the embodiment of the utility model discloses an electric control box, which includes a plurality of wall panels, and each wall panel forms an installation cavity for accommodating the power device.

[0048] like Figure 1 and Figure 2 As shown, the electric control box 100 disclosed in the embodiment of the utility model can retain the heat dissipation duct 110, and the heat dissipation duct 110 can be set according to the actual application scenario, for example, it can be arranged above and below, left and right, and / or front and back of the electric control box 100. Specifically, the position of the heat dissipation duct 110 can be designed according to the arrangement of the power devices in the installation cavity to facilitate the rapid extraction of heat.

[0049] like Figure 2 As shown, at least one wall plate of the electric control box 100 has a first heat dissipation area 121, and the first heat dissipation area 121 corresponds to at least part of the power devices in the installation cavity. It can be understood by those skilled in the art that the electric control box 100 is generally a rectangular structure, generally including a top plate, a bottom plate, a back plate 120, a front cover plate 130 (such as Figure 5 As shown) and two side panels 140 (as Figure 7 shown).

[0050] Since the back plate 120 and the front cover plate 130 usually have a larger area and are easier to arrange in contact with the power device, the first heat dissipation area 121 can be arranged on the back plate 120 or the front cover plate 130. In this embodiment, the first heat dissipation area 121 is arranged on the back plate 120 as an example for description.

[0051] The first heat dissipation zone 121 is provided with a first heat dissipation medium cavity, and the first heat dissipation medium is arranged in the first heat dissipation medium cavity. It can be understood by those skilled in the art that the first heat dissipation medium should be in a fluid state, and the volume will change after absorbing heat, and flow in the first heat dissipation medium cavity with the volume change. The first heat dissipation medium can be a self-circulating refrigerant, such as a phase change material, that is, it does not require a compressor, and uses the different volumes of the self-circulating refrigerant in different dimensions to flow in the first heat dissipation medium cavity by itself. The phase change material is in a liquid (state or solid) at low temperatures, and can change to a gas state (or liquid) when the temperature rises, thereby absorbing a large amount of heat. Phase change material is a relatively conventional medium used in the field of refrigeration or heat dissipation. Those skilled in the art can select a specific phase change material according to the heat dissipation requirements. The utility model does not limit the specific material of the phase change material, as long as it can undergo a phase change process with temperature changes.

[0052] Those skilled in the art will appreciate that the first heat dissipation medium may also be a refrigerant medium that requires an external compressor, which is used to change the pressure of the refrigerant medium, thereby switching between liquid and gas states to quickly remove heat from the power device.

[0053] The electric control box 100 provided by the utility model directly sets a first heat dissipation area 121 on at least one wall plate thereof, and opens a first heat dissipation medium cavity in the first heat dissipation area 121, and fills the first heat dissipation medium in the first heat dissipation medium cavity. Since the first heat dissipation area 121 is arranged corresponding to the power device in the installation cavity, when the power device is installed, the heating end of the power device can be attached to the first heat dissipation area 121 to transfer the heat of the power device to the first heat dissipation area 121. Since the first heat dissipation medium is arranged in the first heat dissipation medium cavity in the first heat dissipation area 121, the first heat dissipation medium can absorb the heat of the power device to reduce the temperature of the power device.

[0054] The utility model does not configure an additional refrigerant radiator, but directly opens a first heat dissipation medium cavity on the wall plate of the electric control box 100, so that the wall plate of the electric control box 100 can not only protect the power device, but also has the function of a refrigerant radiator. Since the utility model does not need to configure an additional refrigerant radiator and an air-cooled radiator, the volume of the electric control box can be reduced. At the same time, since there is no influence of the refrigerant radiator and the air-cooled radiator when maintaining the power device, it can also be more convenient to disassemble and maintain the power device.

[0055] like Figure 2 and Figure 4 As shown, in a specific embodiment of the present invention, the first heat dissipation medium cavity includes a first medium storage cavity 123 and a first medium flow cavity 122. The first medium storage cavity 123 is located in the lower area of ​​the first heat dissipation area 121 and is used to store the first heat dissipation medium.

[0056] The first medium flow cavity 122 is a plurality of spaced-apart lines, one end of which is connected to the first medium storage cavity 123, and the other end extends to the upper area of ​​the first heat dissipation area 121. Since the first heat dissipation medium is a phase change material, after absorbing heat, the volume expands, for example, from liquid to gas. The expanded first heat dissipation medium flows upward along the first medium flow cavity 122, dissipating the heat to the surrounding air through the wall plate. After the temperature is reduced, the volume of the first heat dissipation medium shrinks, for example, from gas to liquid. The shrunk first heat dissipation medium flows downward along the first medium flow cavity 122 and enters the first medium storage cavity 123.

[0057] like Figure 3 As shown, the first medium flow cavity 122 may include a first upward flow cavity 1221 and a first downward flow cavity 1222 arranged at intervals along the wall thickness direction of the first heat dissipation area 121. In this embodiment, the first upward flow cavity 1221 and the first downward flow cavity 1222 are arranged at intervals along the wall thickness direction of the wall plate, and the two can be designed to be arranged in parallel or in a non-parallel manner.

[0058] For ease of understanding, it is defined that the first upward flow cavity 1221 is closer to the inner wall of the first heat dissipation area 121 than the first downward flow cavity 1222, and correspondingly, the first downward flow cavity 1222 is closer to the outer wall of the first heat dissipation area 121 than the first upward flow cavity 1221. It can be understood by those skilled in the art that the heat of the wall plate mainly comes from the power devices installed in the cavity, so the inner wall of the wall plate is closer to the power devices, so the inner wall temperature is higher, while the outer wall temperature is lower.

[0059] The lower ends of the first upward flow chamber 1221 and the first downward flow chamber 1222 are both connected to the first medium storage chamber 123. The first medium flow chamber 122 further includes a first medium communication chamber 1223, through which the upper ends of the first upward flow chamber 1221 and the first downward flow chamber 1222 are connected.

[0060] Since the temperature of the inner wall of the wall plate is higher, the temperature of the first upward flow cavity 1221 is higher than that of the first downward flow cavity 1222; the temperature of the side of the first medium storage cavity 123 close to the inner wall of the wall plate is higher. Based on this, the temperature of the first heat dissipation medium on the side of the inner wall of the first medium storage cavity 123 close to the inner wall and the first heat dissipation medium in the first upward flow cavity 1221 are higher, and it is easier to undergo phase change, such as from liquid to gas. After being transformed into gas, the first heat dissipation medium expands in volume and flows upward along the first upward flow cavity 1221. When it flows to the top, it enters the first downward flow cavity 1222 through the first medium connecting cavity 1223, and after the first downward flow cavity 1222 exchanges heat with the external air and cools down, it changes into liquid state and flows back to the first medium storage cavity 123 along the first downward flow cavity 1222.

[0061] It can be understood by those skilled in the art that, taking the liquid-gas phase change reaction of the first heat dissipation medium as an example, when the first heat dissipation medium is completely phase-changed to a liquid state, the volume of the first medium storage cavity 123 can meet the requirements of accommodating the first heat dissipation medium; of course, the volume of the first medium storage cavity 123 can also be smaller than the volume of the first heat dissipation medium, so that part of the first heat dissipation medium is located in the first medium flow cavity 122. It should be noted that the first medium flow cavity 122 needs to retain part of the volume to adapt to the volume change of the first heat dissipation medium after absorbing heat, so as to avoid the first heat dissipation medium cavity from bursting due to volume expansion.

[0062] Because the first heat dissipation medium has different densities when it is in different phases, for example, the density of the liquid state is greater than that of the gas state; in other words, the density is greater before absorbing heat than after absorbing heat, and the medium with greater density will be deposited at the bottom, that is, in this embodiment, the first medium storage chamber 123 is arranged in the lower area of ​​the first heat dissipation area 121, and the first medium flow chamber 122 is arranged in the upper area of ​​the first heat dissipation area 121. Therefore, the lower area of ​​the first heat dissipation area 121 has a better heat absorption capacity.

[0063] Based on this, Figure 1 As shown, in this embodiment, a plurality of installation areas are arranged in the installation cavity of the electric control box 100 along the height direction, and the power devices are installed in each installation area, and the heat generated by the power devices in the lowest installation area is greater than the heat generated by the power devices in other installation areas. That is, in this embodiment, the power devices with large heat generation are arranged in the lower installation area, and the power devices with small heat generation are arranged in the upper installation area, and the first heat dissipation area 121 corresponds to at least the lowest installation area. It can be understood by those skilled in the art that the first heat dissipation area 121 can also correspond to all the installation areas, and because the lower area of ​​the first heat dissipation area 121 has a better heat absorption capacity, the power devices with large heat generation are arranged in the lower installation area, which is more conducive to the heat dissipation of the power devices with large heat generation.

[0064] Furthermore, from bottom to top, the heat generated by the power devices in each mounting area decreases in sequence. Figure 1 As shown, taking three installation areas as an example, from bottom to top, the installation areas are respectively a first installation area 210 , a second installation area 220 and a third safety area 230 .

[0065] The first installation area 210 located at the bottom can be used to install power devices with high power and high heat dissipation requirements. Common power devices with high power and high heat dissipation requirements include IPM (Intelligent Power Module), PIM (Power Integrated Module, a product that integrates a three-phase inverter circuit, a diode bridge circuit, and a braking circuit into one module), IGBT (Insulated Gate Bipolar Transistor), rectifier bridge, etc.

[0066] The third safety zone 230 located at the top is used to install power devices with weak current heat dissipation requirements, such as diodes, chip resistors, etc. The second installation zone 220 located in the middle is used to install power devices with strong current and low heat dissipation requirements, such as capacitors, etc. It can be understood by those skilled in the art that the heat generated by the strong current high heat dissipation requirement power device is greater than that of the strong current low heat dissipation requirement power device, and the heat generated by the strong current low heat dissipation requirement power device is greater than that of the weak current heat dissipation requirement power device.

[0067] like Figure 5 and Figure 6 As shown, at least one wall plate has a second heat dissipation area 131 and a heat conductive bracket 132. In this embodiment, the second heat dissipation area 131 and the heat conductive bracket 132 can be arranged on the front cover plate 130, and the front cover plate 130 is located on the wall plate opposite to the rear plate 120.

[0068] One end of the heat-conducting bracket 132 is connected to the second heat dissipation zone 131, and the other end at least abuts against the power device in the lowest installation area. Since the power device can be ensured to fit tightly with the back plate 120 when installed, in view of the opening and closing requirements of the front cover 130, it is impossible to make the power device directly fit on the inner wall of the front cover 130, which will affect the opening and closing of the front cover 130. Based on this, in this embodiment, the heat of the power device is introduced into the second heat dissipation zone 131 by using the heat-conducting bracket 132, and the heat is exchanged to the surrounding air through the second heat dissipation zone 131. The heat-conducting bracket 132 can have a certain elasticity so that it can be deformed after being compressed so as not to affect the opening and closing of the front cover 130. The heat-conducting bracket 132 can be made of copper, aluminum and other materials with high thermal conductivity.

[0069] In this embodiment, the second heat dissipation area 131 can adopt a similar solution as the first heat dissipation area 121, for example, the second heat dissipation area 131 can also be provided with a second heat dissipation medium cavity, and a second heat dissipation medium is arranged in the second heat dissipation medium cavity, and the second heat dissipation medium is a self-circulating refrigerant medium. The second heat dissipation medium can be the same medium as the first heat dissipation medium, or a different heat dissipation medium, as long as it can undergo phase change with temperature changes to accelerate heat dissipation. The heat dissipation principle of the second heat dissipation area 131 can refer to the first heat dissipation area 121, and will not be repeated herein.

[0070] In a specific embodiment of the present invention, the second heat dissipation medium cavity includes a second medium storage cavity and a second medium flow cavity. The second medium storage cavity is located in the lower area of ​​the second heat dissipation area 131 and is used to store the second heat dissipation medium.

[0071] The second medium flow cavity is a plurality of intervally arranged ones, and one end is connected to the second medium storage cavity, and the other end extends to the upper area of ​​the second heat dissipation zone 131. Since the second heat dissipation medium is a phase change material, after absorbing heat, the volume expands, for example, from liquid to gas, and the expanded second heat dissipation medium flows upward along the second medium flow cavity, dissipating the heat to the surrounding air through the wall plate, and the volume of the second heat dissipation medium shrinks after cooling, for example, from gas to liquid, and the second heat dissipation medium flows downward along the second medium flow cavity after shrinking the volume, and enters the second medium storage cavity.

[0072] The second medium flow cavity may include a second upward flow cavity and a second downward flow cavity spaced apart along the wall thickness direction of the second heat dissipation area 131. In this embodiment, the second upward flow cavity and the second downward flow cavity are spaced apart along the wall thickness direction of the wall plate, and the two can be designed to be arranged in parallel or in a non-parallel arrangement.

[0073] For ease of understanding, the second upward flow cavity is defined as being closer to the inner wall of the second heat dissipation area 131 than the second downward flow cavity, and correspondingly, the second downward flow cavity is closer to the outer wall of the second heat dissipation area 131 than the second upward flow cavity. It can be understood by those skilled in the art that the heat of the wall plate mainly comes from the power devices installed in the cavity, and the power devices are introduced into the inner wall of the wall plate through the heat-conducting bracket 132, so the inner wall temperature of the wall plate is higher, while the outer wall temperature is lower.

[0074] The lower ends of the second upward flow chamber and the second downward flow chamber are both connected to the second medium storage chamber. The second medium flow chamber also includes a second medium communication chamber, and the upper ends of the second upward flow chamber and the second downward flow chamber are connected through the second medium communication chamber.

[0075] Since the temperature of the inner wall of the wall plate is higher, the temperature of the second upward flow cavity is higher than that of the second downward flow cavity; the temperature of the second medium storage cavity on the side close to the inner wall of the wall plate is higher. Based on this, the temperature of the second heat dissipation medium on the side close to the inner wall of the second medium storage cavity and the second heat dissipation medium in the second upward flow cavity is higher, and it is easier to undergo phase change, such as from liquid to gas. After being transformed into gas, the volume of the second heat dissipation medium expands and flows upward along the second upward flow cavity. When it flows to the top, it enters the second downward flow cavity through the second medium connecting cavity, and after the second downward flow cavity exchanges heat with the external air and cools down, it changes phase to liquid, and flows back to the second medium storage cavity along the second downward flow cavity.

[0076] It can be understood by those skilled in the art that, taking the liquid-gas phase change reaction of the second heat dissipation medium as an example, when the second heat dissipation medium completely changes phase to liquid, the volume of the second medium storage cavity can meet the requirements of accommodating the second heat dissipation medium; of course, the volume of the second medium storage cavity can also be smaller than the volume of the second heat dissipation medium, so that part of the second heat dissipation medium is located in the second medium flow cavity. It should be noted that the second medium flow cavity needs to retain part of the volume to adapt to the volume change of the second heat dissipation medium after absorbing heat, so as to avoid the second heat dissipation medium cavity from bursting due to volume expansion.

[0077] The first heat dissipation medium can be directly disposed in the first heat dissipation medium cavity or indirectly disposed in the first heat dissipation medium cavity through the first pipeline, that is, the first pipeline is embedded in the first heat dissipation medium cavity, and the first heat dissipation medium is disposed in the first pipeline, and the material of the first pipeline can be copper, superconducting material, etc. Correspondingly, the second heat dissipation medium is directly disposed in the second heat dissipation medium cavity or indirectly disposed in the second heat dissipation medium cavity through the second pipeline, that is, the second pipeline is embedded in the second heat dissipation medium cavity, and the second heat dissipation medium is disposed in the second pipeline, and the material of the second pipeline can be copper, superconducting material, etc.

[0078] The embodiment of the utility model further discloses an air-conditioning unit, which includes the electric control box 100 disclosed in the above embodiment, and thus has all the technical effects of the above electric control box 100, which will not be described in detail herein.

[0079] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0080] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0081] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0082] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An electric control box, characterized in that: It comprises a plurality of wall panels, and each wall panel encloses a mounting cavity for accommodating a power device; At least one of the wall panels has a first heat dissipation area (121), the first heat dissipation area (121) is used to correspond to at least part of the power devices in the installation cavity, and the first heat dissipation area (121) is provided with a first heat dissipation medium cavity, and a first heat dissipation medium is arranged in the first heat dissipation medium cavity.

2. The electric control box according to claim 1, characterized in that: The first heat dissipation medium is a self-circulating refrigerant medium; and / or, The first heat dissipation medium cavity comprises: A first medium storage cavity (123) located in a lower region of the first heat dissipation area (121); The first medium flow chamber (122) is a plurality of chambers arranged at intervals, one end of which is connected to the first medium storage chamber (123) and the other end of which extends toward the upper region of the first heat dissipation area (121).

3. The electric control box according to claim 2, characterized in that: The first medium flow chamber (122) comprises a first upward flow chamber (1221) and a first downward flow chamber (1222) arranged at intervals along the wall thickness direction of the first heat dissipation zone (121); the first upward flow chamber (1221) is closer to the inner wall of the first heat dissipation zone (121) than the first downward flow chamber (1222); the lower ends of the first upward flow chamber (1221) and the first downward flow chamber (1222) are both connected to the first medium storage chamber (123); The first medium flow chamber (122) further comprises a first medium communication chamber (1223), and the upper ends of the first upward flow chamber (1221) and the first downward flow chamber (1222) are connected via the first medium communication chamber (1223).

4. The electric control box according to any one of claims 1 to 3, characterized in that: The mounting cavity includes a plurality of mounting areas along the height direction, the power devices are mounted in each of the mounting areas, and the heat generated by the power devices in the lowest mounting area is greater than that of the power devices in other mounting areas; The first heat dissipation area (121) corresponds to at least the lowest installation area.

5. The electric control box according to claim 4, characterized in that: From bottom to top, the heat generated by the power devices in each of the mounting areas decreases in sequence; and / or, There are at least three installation areas, the installation area at the bottom is used to install power devices with high power and high heat dissipation requirements, the installation area at the top is used to install power devices with low power and low heat dissipation requirements, and the installation area in the middle is used to install power devices with high power and low heat dissipation requirements, the heat generated by the power devices with high power and high heat dissipation requirements is greater than that of the power devices with low power and low heat dissipation requirements, and the heat generated by the power devices with high power and low heat dissipation requirements is greater than that of the power devices with low power and low heat dissipation requirements; and / or, At least one of the wall plates has a second heat dissipation area (131) and a heat conductive bracket (132), one end of the heat conductive bracket (132) is connected to the second heat dissipation area (131), and the other end at least abuts against the power device in the lowest mounting area.

6. The electric control box according to claim 5, characterized in that: The second heat dissipation zone (131) is provided with a second heat dissipation medium cavity, in which a second heat dissipation medium is arranged, and the second heat dissipation medium is a self-circulating refrigerant medium.

7. The electric control box according to claim 6, characterized in that: The second heat dissipation medium cavity comprises: A second medium storage cavity, located in a lower area of ​​the second heat dissipation zone (131); The second medium flow cavity is a plurality of spaced-apart rows, one end of which is connected to the second medium storage cavity and the other end of which extends to the upper region of the second heat dissipation zone (131).

8. The electric control box according to claim 7, characterized in that: The second medium flow chamber comprises a second upward flow chamber and a second downward flow chamber arranged at intervals along the wall thickness direction of the second heat dissipation zone (131), the second upward flow chamber being closer to the inner wall of the second heat dissipation zone (131) than the second downward flow chamber, and the lower ends of the second upward flow chamber and the second downward flow chamber are both connected to the second medium storage chamber; The second medium flow chamber further includes a second medium communication chamber, and the upper ends of the second upward flow chamber and the second downward flow chamber are communicated with each other through the second medium communication chamber.

9. The electric control box according to claim 6, characterized in that: The first heat dissipation medium is directly disposed in the first heat dissipation medium cavity or is indirectly disposed in the first heat dissipation medium cavity through a first pipeline; and / or, The second heat dissipation medium is directly disposed in the second heat dissipation medium cavity or is indirectly disposed in the second heat dissipation medium cavity through a second pipeline; and / or, The first heat dissipation area (121) is arranged on the rear back plate (120) of the electric control box, and the second heat dissipation area (131) is arranged on the front cover plate (130) of the electric control box.

10. An air conditioning unit, characterized in that: It comprises an electric control box as described in any one of claims 1 to 9.

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