Electric appliance box cooling device, control method, refrigeration system and air conditioner

Abstract

The application provides an electric appliance box cooling device, a control method, a refrigerating system and an air conditioner. The electric appliance box cooling device comprises an electric appliance box body, a collecting assembly and a conveying piece. The electric appliance box body has a second air inlet. The collecting assembly is used for collecting the cold energy released on the suction pipe. The conveying piece conveys the cold energy to the second air inlet, so as to radiate the components inside the electric appliance box body. The application fully utilizes the cold energy generated in the process of conveying the refrigerant by the suction pipe. Without reducing the refrigerating capacity of the air conditioner, the transmission of the cold energy is strengthened, the cold energy radiated by the suction pipe is maximized, the loss of the cold energy is avoided, and the recycling of the cold energy is realized.

Description

Technical Field

[0001] This invention belongs to the field of air conditioner technology, specifically relating to an electrical box cooling device, control method, refrigeration system, and air conditioner. Background Technology

[0002] When an air conditioner is running, the temperature rise of the components in the electrical box must not be too high, otherwise it will affect the normal operation or lifespan of the components. When the ambient temperature is high, the requirements for the air conditioner's cooling comfort are higher, meaning that it must have a sufficiently large cooling capacity output under high-temperature conditions. This requires the air conditioner's frequency not to decrease under high-temperature conditions, but a higher frequency will lead to a higher temperature rise of the components. Most integrated air conditioners rely on the heat sink structure on the electrical box for air cooling, which can meet the requirements for controlling the temperature rise of the electrical box under normal operating conditions. However, when the outdoor temperature is high, due to the sealed structure of the electrical box, the heat generated by the components accumulates inside the electrical box. At this time, the heat carried away by the outdoor hot air through the heat sink is limited, which cannot effectively dissipate heat, resulting in excessive temperature rise of the components and the failure of the entire unit to operate. Summary of the Invention

[0003] This invention provides an electrical box cooling device, control method, refrigeration system, and air conditioner, which can solve the technical problem that due to the sealed structure of the electrical box, the heat generated by the components accumulates inside the electrical box and cannot be effectively dissipated.

[0004] The present invention provides an electrical box cooling device, which includes an electrical box body, a collection component, and a conveying component; the electrical box body has a second air inlet, the collection component is used to collect the cold energy released on the air intake pipe; the conveying component conveys the cold energy to the second air inlet to dissipate heat from the components inside the electrical box body.

[0005] In some implementations, the collection component is disposed on the intake pipe, and the air in the collection component exchanges heat with the cold air.

[0006] In some embodiments, the collection assembly includes a heat exchanger that contacts the outer wall of the intake pipe and is used to accelerate the exchange of heat between the air and the cold air.

[0007] In some embodiments, the heat exchanger is a plurality of heat exchange fins arranged sequentially at intervals, and the heat exchange fins are annular.

[0008] In some embodiments, the collection assembly further includes a housing disposed on the intake pipe, with the heat exchanger located within the housing;

[0009] The housing has a first air inlet and a first air outlet, so that the air entering the housing is cooled by heat exchange with the cold energy and then discharged from the first air outlet.

[0010] In some implementations, the conveyor is a fan that blows the cold energy from the collection assembly to the second air inlet.

[0011] In some embodiments, the conveyor delivers cold energy to a second air inlet via an air supply duct. The second air inlet is equipped with a valve, and the air inlet end of the conveyor blows the cold energy from the collection assembly into the air supply duct.

[0012] In some implementations, a filter screen is provided at the air inlet end of the conveyor.

[0013] In some embodiments, the electrical box body includes a box cover, on which multiple vents are provided.

[0014] In some implementations, the exhaust vents are air grilles, and multiple exhaust vents are spaced apart on the top of the cover.

[0015] In some implementations, a main board is provided in the electrical box body, and the main board opens the conveyor to deliver cold energy to the second air inlet according to the temperature of the components.

[0016] In some implementations, a temperature sensor is provided on the component. When the conveying component is a fan and the second air inlet is equipped with a valve, the main board opens the valve and the conveying component according to the temperature detected by the temperature sensor, so as to deliver the cooling energy to the second air inlet.

[0017] A control method for an electrical box cooling device, wherein the electrical box cooling device is as described above, characterized in that, based on the temperature of the components, the conveyor is shut down or the low-frequency operation conveyor is operated or the high-frequency operation conveyor is operated.

[0018] In some implementations, when a temperature sensor is installed on the component, a fan is used as the conveyor, and a valve is installed at the second air inlet,

[0019] Within n seconds before the air conditioner is turned on, the temperature of the components gradually rises. When the temperature sensor detects that the temperature of the components is lower than T0, the valve and the conveyor are closed, and the air inside the electrical box body naturally convects to dissipate heat from the components.

[0020] When the air conditioner is turned on and running for m seconds, within t seconds, the temperature sensor detects that the temperature of the component exceeds T0 temperature, opens the valve, the conveyor runs at low frequency, and the cooling energy flows to the second air inlet at the first speed.

[0021] When the air conditioner is turned on and running for k seconds, within t seconds, the temperature sensor detects that the temperature of the component exceeds the temperature of T1, opens the valve, the conveyor runs at high frequency, and the cooling energy flows to the second air inlet at the second speed.

[0022] The second speed is greater than the first speed;

[0023] Within h seconds after the electrical box heat exchange system stops operating, open the valve and allow the conveyor to continue operating. Once the temperature of the components gradually decreases, close the valve and the conveyor.

[0024] A refrigeration system includes a compressor, a heat exchanger, and the aforementioned electrical box cooling device. The compressor has a suction pipe, the end of which is connected to the heat exchanger.

[0025] An air conditioner includes a refrigeration system, characterized in that the refrigeration system is the aforementioned refrigeration system.

[0026] The present invention provides an electrical box cooling device, control method, refrigeration system, and air conditioner, which have the following beneficial effects:

[0027] When refrigerant is transported through the suction pipe, the outer wall of the suction pipe generates cold energy, which is released into the collection assembly. The cold energy is then discharged from the collection assembly, and the conveying component transports the cold energy to the second air inlet. This invention fully utilizes the cold energy generated during the refrigerant transport process through the suction pipe. Without reducing the air conditioning cooling capacity, it enhances the transfer of cold energy, maximizes the utilization of the cold energy emitted by the suction pipe, avoids cold energy loss, and achieves cold energy recovery and utilization. Attached Figure Description

[0028] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0029] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0030] Figure 1 This is a schematic diagram of a refrigeration system according to an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the electrical box cooling device according to an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the collection component according to an embodiment of the present invention;

[0033] Figure 4This is a schematic diagram showing the connection between the electrical box body and the collection component according to an embodiment of the present invention;

[0034] Figure 5 A schematic diagram of the electrical box body according to an embodiment of the present invention.

[0035] Attached Figures: 1-Intake pipe; 2-Collection assembly; 201-First air inlet; 202-First air outlet; 211-Shell; 212-Heat exchanger; 22-Conveying component; 221-Filter screen; 3-Electrical box body; 301-Second air inlet; 302-Box cover; 303-Air outlet grille; 304-Main board; 305-Box bottom plate; 306-Main board cover; 307-Main board bottom plate; 4-Compressor; 5-Heat exchanger; 6-Air supply pipe. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0039] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0040] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0041] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0042] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0043] See also Figures 1 to 3As shown, according to an embodiment of the present invention, an electrical box cooling device is provided, which includes an electrical box body 3, a collection component 2 and a conveying component 22; the electrical box body 3 has a second air inlet 301, the collection component 2 is used to collect the cold energy released on the air intake pipe 1; the conveying component 22 conveys the cold energy to the second air inlet 301 to dissipate heat from the components inside the electrical box body 3.

[0044] When refrigerant is transported in the suction pipe 1, the outer wall of the suction pipe 1 generates cold energy, which is released into the collection assembly 2. The cold energy is discharged from the collection assembly 2, and the conveying component 22 transports the cold energy to the second air inlet 301. This invention makes full use of the cold energy generated by the suction pipe 1 during the refrigerant transport process. Without reducing the air conditioning cooling capacity, it can enhance the transfer of cold energy, maximize the utilization of the cold energy emitted by the suction pipe 1, avoid the loss of cold energy, and realize the recovery and utilization of cold energy.

[0045] It is worth noting that the compressor 4 draws in refrigerant from the suction pipe 1. During the refrigerant's transport in the suction pipe 1, the refrigerant just flowing out of the heat exchanger 5 has the greatest cooling capacity. Therefore, the collection component 2 of this invention is preferably installed near the outlet of the collection pipe close to the heat exchanger 5. Furthermore, existing pipelines typically use conventional counterweights such as damping blocks. This invention can appropriately adjust the placement of the collection component 2 on the suction pipe 1 according to the pipeline counterweight.

[0046] The collection component 2 is installed on the air intake pipe 1, and the air in the collection component 2 exchanges heat with the cold air.

[0047] The collection component 2 includes a heat exchanger 212, which is in contact with the outer wall of the intake pipe 1. The heat exchanger 212 is used to accelerate the exchange of heat between air and cold air.

[0048] The heat exchanger 212 consists of multiple heat exchange fins arranged at intervals in sequence, and the heat exchange fins are in the shape of a ring.

[0049] In this embodiment, the heat exchanger 212 consists of multiple annular heat exchange fins, which are sequentially and spaced apart on the intake pipe 1. The heat exchange fins facilitate heat exchange between the low-temperature refrigerant and the air, enhancing cold transfer and ensuring that the air in the casing 211 is fully cooled before being discharged. Specifically, the heat exchange fins can be made of metals with good thermal conductivity, such as aluminum or copper. To reduce product costs, aluminum is preferred.

[0050] The collection assembly 2 also includes a housing 211, which is disposed on the air intake pipe 1, and a heat exchanger 212 is located in the housing 211. The housing 211 has a first air inlet 201 and a first air outlet 202, so that the air entering the housing 211 is cooled by exchanging heat with the cold energy and then discharged from the first air outlet 202.

[0051] In one specific embodiment, the housing 211 is cylindrical and includes a detachably connected first half-shell and a second half-shell. The first half-shell and the second half-shell are connected by snap-fit, forming the housing 211 after connection. The top and bottom of the housing 211 are respectively provided with through holes adapted to the suction pipe 1. When the housing 211 needs to be installed, the first half-shell and the second half-shell are snapped onto the suction pipe 1. After installation, the suction pipe 1 is vertically positioned within the housing 211. The housing 211 of this invention has a detachable structure, facilitating adjustment of the installation position of the housing 211, thereby enabling independent assembly of the cooling device.

[0052] In one specific implementation, the second half-shell is provided with multiple first air inlets 201, and the first half-shell is provided with multiple first air outlets 202. Multiple drain holes are respectively provided at the bottom of the first and second half-shells. Air enters the housing 211 through the first air inlets 201. After the air cools in the cavity of the housing 211, condensate is generated. This condensate is discharged from the drain holes, preventing condensate from accumulating in the housing 211.

[0053] See also Figure 4 As shown, the conveying component 22 is a fan, which blows the cold air in the collection component 2 to the second air inlet 301. An axial flow fan is preferred, which drives the air circulation.

[0054] The conveying component 22 delivers the cold energy to the second air inlet 301 through the air supply pipe 6. The second air inlet 301 is equipped with a valve, and the air inlet end of the conveying component 22 blows the cold energy in the collection component 2 into the air supply pipe 6.

[0055] Specifically, the air supply duct 6 can be made of plastic or sponge with good heat insulation properties to prevent the cooled air from being reheated by the outside air during the transportation process.

[0056] In one specific implementation, the conveying member 22 is disposed at the first air outlet 202, with the air inlet of the conveying member 22 facing the heat exchanger 212 and the air outlet of the conveying member 22 facing the first air outlet 202. The conveying member 22 outputs the cooled air inside the housing 211 from the first air outlet 202.

[0057] In this embodiment, when the conveyor 22 is started, the conveyor 22 draws in the air around the housing 211. The air is drawn into the chamber of the housing 211 from the first air inlet 201. Under the action of the heat exchanger 212, the air exchanges heat with the low-temperature refrigerant in the housing 211. After the air is cooled, it is output from the first air outlet 202.

[0058] The air inlet end of the conveyor 22 is equipped with a filter screen 221, which is detachably connected to the housing 211.

[0059] In one specific implementation, the filter 221 is configured as a pull-out structure. The housing 211 has an outwardly extending sleeve with a first air outlet 202. The sleeve and the first air inlet 201 are positioned opposite each other. The conveyor 22 is fixedly installed in the sleeve, and a slot is provided on the sleeve near the air inlet end of the conveyor 22 to fix the filter 221 in place. The diameter of the filter 221 is adapted to the cavity of the sleeve to ensure that the filter 221 can cover the air inlet end of the conveyor 22. This configuration not only prevents the conveyor 22 from sucking in debris and damaging it, thus preventing debris from entering the electrical box and causing short circuits in the components, but also allows the filter 221 to be removed periodically for cleaning or replacement.

[0060] The electrical box body 3 is set on the rear partition on the outdoor side. Traditional electrical box bodies 3 are equipped with heat sink structures to dissipate heat, but this invention does not have a heat sink structure. Instead, it dissipates heat by collecting the cooled air through the collection component 2. This structure can save space and achieve lightweight and miniaturization of the electrical box.

[0061] See also Figure 5 As shown, the electrical box body 3 includes a box cover 302, a box base plate 305, and a main board 304. The box cover 302 and the box base plate 305 are connected to each other to form the electrical box shell, and the main board 304 is disposed in the electrical box shell. Specifically, a main board cover 306 and a main board base plate 307 are respectively provided on both sides of the main board 304.

[0062] The top of the cover 302 is provided with an air outlet grille 303, through which hot air inside the electrical box body 3 is discharged. Multiple second air inlets 301 are provided on the side wall of the cover 302. Specifically, the top of the cover 302 is provided with multiple air outlet grilles 303, each 3-4mm wide. This ensures that hot air inside the electrical box body 3 is discharged through the air outlet grilles 303 while preventing rainwater from directly entering the electrical box body 3, thus avoiding damage to components.

[0063] Compared to the traditional sealed electrical box structure, this invention is equipped with a second air inlet 301 and an air outlet grille 303. One end of the second air inlet 301 is connected to the air supply pipe 6, and the other end of the second air inlet 301 faces the heat-generating components. When the cooled air enters the electrical box body 3 through the second air inlet 301, the second air inlet 301 can be aimed at the components with high temperature rise, directly blowing heat to the components, realizing rapid and efficient heat dissipation, and achieving efficient cooling of the components with severe heat generation. The air outlet grille 303 can discharge the high-temperature air after absorbing heat.

[0064] The collecting component 2 has multiple first air inlets 201 and first air outlets 202, and the electrical box body 3 is provided with multiple second air inlets 301, wherein one first air outlet 202 is connected to one air inlet.

[0065] The electrical box body 3 contains at least two components that generate significant heat. Each component corresponds to a second air inlet 301. When cooling down the components that generate significant heat, other components on the motherboard will also be cooled down.

[0066] In this embodiment, the number of air supply pipes 6, the first air outlet 202 and the second air inlet 301 are in one-to-one correspondence. Since the motherboard 304 is different, the number and position of the components that generate serious heat are also different. The setting position of the second air inlet 301 is also adjusted according to the position of the components, so that the second air inlet 301 is set near the components with higher temperature.

[0067] The electrical box body 3 contains a main board 304, and temperature sensors are installed on the components. The main board 304 opens or closes the second air inlet 301 based on the temperature of the components detected by the temperature sensors. Specifically, the main board 304 can open or close the valve based on the temperature detected by the temperature sensors.

[0068] See also Figure 1 and Figure 4 As shown, a refrigeration system includes a compressor 4, a heat exchanger 5, and the aforementioned electrical box cooling device. The compressor 4 is connected to the heat exchanger 5 through an air intake pipe 1. The electrical box body 3 has a second air inlet 301, which is connected to a first air outlet 202 through an air supply pipe 6. The collection component 2 delivers cooled air to the electrical box body 3 to cool the components inside the electrical box body 3.

[0069] In this embodiment, the heat exchanger 5 is an evaporator, and the collection component 2 is installed on the suction pipe 1, which accelerates the heat exchange between the low-temperature refrigerant and the intake air. The cooled air is then transported at a certain speed through the air supply pipe 6 to the electrical box body 3, thereby cooling and dissipating heat from the components inside the electrical box body 3 and preventing the components from overheating. This invention fully utilizes the cold energy released on the suction pipe 1 during the operation of the air conditioner and concentrates it to the interior of the electrical box body 3, thereby cooling the components and reducing the internal temperature of the electrical box body 3, thus achieving the effect of heat dissipation for the electrical box.

[0070] Specifically, when there are multiple components that generate significant heat, each component is equipped with a temperature sensor.

[0071] A control method for an electrical box cooling device, wherein the electrical box cooling device is the aforementioned electrical box cooling device, wherein the conveyor 22 is shut down or the low-frequency operation conveyor 22 or the high-frequency operation conveyor 22 is operated according to the temperature of the components.

[0072] Specifically, when the components are equipped with temperature sensors, the conveyor 22 is a fan, and the second air inlet 301 is equipped with a valve,

[0073] Within n seconds before the air conditioner is turned on, the temperature of the components gradually rises. The temperature sensor detects that the temperature of the components is lower than T0, closes the valve and the conveyor 22, and the internal air of the electrical box body 3 naturally convects to dissipate heat from the components.

[0074] When the air conditioner is turned on and running for m seconds, within t seconds, the temperature sensor detects that the temperature of the component exceeds T0 temperature, opens the valve, and the conveyor 22 operates at low frequency, and the cooling energy flows to the second air inlet 301 at the first speed.

[0075] After the heat exchange system of the electrical box has been running for k seconds, within t seconds, the temperature sensor detects that the temperature of the component exceeds the temperature of T1, opens the valve, and the conveyor 22 runs at high frequency, and the cold energy flows to the second air inlet 301 at the second speed.

[0076] Among them, the second speed is greater than the second speed, that is, when the conveying component 22 is running at high frequency, the refrigerant flows faster.

[0077] Within h seconds after the electrical box heat exchange system stops running, open the valve and the conveyor 22 continues to run. Once the temperature of the components gradually decreases, close the valve and the conveyor 22.

[0078] Specifically, when at least two components that generate significant heat are installed inside the electrical box body 3, and each of the two components corresponds to a second air inlet 301;

[0079] After the air conditioner has been running for m seconds, the corresponding second air inlet 301 is opened separately according to the temperature of the two components.

[0080] After the air conditioner has been running for k seconds, the second air inlet 301 corresponding to the two components is opened simultaneously.

[0081] In this embodiment, taking the electrical box body 3 as an example, when the air conditioner is turned on for cooling or heating, each component of the electrical box is powered on, the compressor 4 starts running, the frequency begins to rise to the calculated target frequency, the temperature of each component gradually increases, and the temperature sensing module begins to detect the temperature of each component in real time. The temperature of the first component is represented as t1, and the temperature of the second component is represented as t2.

[0082] The control method for the electrical box heat exchange system specifically includes the following steps:

[0083] S1: In the first n seconds after the air conditioner is turned on, the module current value is rising. At this time, the heat generated by each component is not large. The air inside the electrical box 3 absorbs some heat and flows out through the air outlet grille 303. As the temperature of each component gradually rises, it is detected that t1(n) < T0 and t2(n) < T0, where T0 is a target temperature value set by the program, which can be 55-65℃. At this time, the conveyor 22 is in a stopped state, and the heat dissipation of each component relies solely on the natural airflow inside the electrical box 3.

[0084] S2: After the air conditioner has been running for m seconds (m≥n), due to the different temperature rates of different components and their different upper limit temperature requirements, where T1 represents the upper limit temperature of the first component and T2 represents the upper limit temperature of the second component, after t seconds (specifically, t can be set to 10-20 seconds), if t1(m)≥T0 or t2(m)≥T0 is detected, the conveyor 22 starts running at a speed of r1, where r1 indicates that the conveyor 22 is running at a low speed. At the same time, the magnitudes of |t1(m)-T1| and |t2(m)-T2| are determined. If |t1(m)-T1|>|t2(m)-T2|, that is, the second component will heat up faster. If the upper limit temperature value is reached, the second air inlet 301 connected to the second component is opened, and the second air inlet 301 of the first component is closed; if |t1(m)-T1|<|t2(m)-T2|, that is, the temperature of the first component will reach the upper limit temperature value faster, then the second air inlet 301 connected to the first component is opened, and the second air inlet 301 of the second component is closed. Low-temperature air blows directly to the first component or the second component at the first speed through the opened air supply channel to dissipate heat. Its temperature rise rate is suppressed. At the same time, it drives the air flow inside the electrical box body 3, and the heat of other heat-generating components will also be carried away by the flowing air.

[0085] It is worth noting that in step S2, the temperature of each component is not too high, so it is sufficient to open the second air inlet 301 of either the first or second component.

[0086] S3: After the air conditioner has been running for k seconds (k≥m≥n), if after t seconds of continuous testing, t1(k)≥T1 or t2(k)≥T1, where T1 is a target temperature value set by the program, which can be 65-75℃, it means that the conveyor 22 at low speed and with only one air duct open cannot meet the heat dissipation of the existing components, and the component temperature is still rising. Therefore, it is necessary to increase the air volume and wind speed. At this time, the conveyor 22 starts to run at a speed of r2, where r2 represents the high speed of the conveyor 22, and directly opens the valves of all the second air inlets 301. The low-temperature air blows directly onto the first and second components at a second speed through the opened air duct to dissipate heat, cooling the first and second components to ensure that the temperature of each component does not reach the upper limit temperature value. At the same time, the heat of other heat-generating components will also be carried away by the flowing air, maintaining the normal operation of the whole machine.

[0087] S4: Within h seconds after the air conditioner is turned off, specifically h can be 20-30 seconds, the conveyor 22 continues to run to cool the components. As the components stop generating heat, the temperature gradually decreases, the heat dissipation requirement is cancelled, the active heat dissipation mode ends, the conveyor 22 stops, and the second air inlet closes.

[0088] In this embodiment, the heat exchange system of the electrical box is combined with the control method, which can control the air volume of the air supply pipe 6 in real time according to the temperature of the components, so as to achieve an adaptive effect.

[0089] An air conditioner includes an electrical box heat exchange system, wherein the electrical box heat exchange system is the aforementioned electrical box heat exchange system.

[0090] It is worth noting that, in this embodiment, the two ends of the suction pipe 1 are connected to the heat exchanger 5 and the compressor 4, respectively. Regardless of whether the air conditioner is in heating or cooling mode, the suction pipe 1 always outputs low-temperature and low-pressure refrigerant. The air conditioner achieves mutual switching between cooling and heating through the reversing of the four-way valve.

[0091] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0092] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above are merely preferred embodiments of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. An electrical box cooling device, characterized in that, include: Electrical box body (3), collection component (2) and conveyor (22); The electrical box body (3) has a second air inlet (301), the collection component (2) is independently mounted on the air intake pipe (1), and the collection component (2) is adjustable according to the position of the pipe counterweight. The air in the collection component (2) exchanges heat with the cold energy. The collection component (2) is used to collect the cold energy released on the air intake pipe (1). The conveying component (22) conveys the cold energy to the second air inlet (301) to dissipate heat from the components inside the electrical box body (3). The collection assembly (2) includes a heat exchanger (212) that contacts the outer wall of the intake pipe (1). The heat exchanger (212) is used to accelerate the exchange of heat between air and cold energy. The collection assembly (2) also includes a housing (211) that is disposed on the intake pipe (1). The heat exchanger (212) is located in the housing (211). The housing (211) has a first air inlet (201) and a first air outlet (202) so that the air entering the housing (211) is cooled by heat exchange with the cold energy and then discharged from the first air outlet (202). The housing (211) includes a first half-shell and a second half-shell that can be detachably connected. The top and bottom of the housing (211) are respectively provided with through holes that are adapted to the air intake pipe (1). The first half-shell and the second half-shell are fastened to the air intake pipe (1). The bottom of the first half-shell and the second half-shell are respectively provided with multiple drainage holes.

2. The electrical box cooling device according to claim 1, characterized in that, The heat exchanger (212) consists of a plurality of heat exchange fins arranged at intervals in sequence, and the heat exchange fins are annular.

3. The electrical box cooling device according to claim 1, characterized in that, The conveying component (22) is a fan, which blows the cold energy in the collection assembly (2) to the second air inlet (301).

4. The electrical box cooling device according to claim 3, characterized in that, The conveying component (22) delivers cold energy to the second air inlet (301) through the air supply pipe (6). The second air inlet (301) is equipped with a valve. The air inlet end of the conveying component (22) blows the cold energy in the collection component (2) into the air supply pipe (6).

5. The electrical box cooling device according to claim 4, characterized in that, The air inlet end of the conveyor (22) is provided with a filter screen (221).

6. The electrical box cooling device according to claim 1, characterized in that, The electrical box body (3) includes a box cover (302), and the box cover (302) is provided with multiple air vents.

7. The electrical box cooling device according to claim 6, characterized in that, The exhaust vent is an air outlet grille (303), and multiple exhaust vents are spaced apart on the top of the cover (302).

8. The electrical box cooling device according to claim 3, characterized in that, The electrical box body (3) is provided with a main board (304), which opens the conveyor (22) according to the temperature of the components to deliver cold energy to the second air inlet (301).

9. The electrical box cooling device according to claim 8, characterized in that, A temperature sensor is provided on the component. When the conveying component (22) is a fan and the second air inlet (301) is equipped with a valve, the main board (304) opens the valve and the conveying component (22) according to the temperature detected by the temperature sensor, so as to deliver the cold energy to the second air inlet (301).

10. A control method for an electrical box cooling device, wherein the electrical box cooling device is the electrical box cooling device according to claim 1, characterized in that, Depending on the temperature of the component, the conveyor (22) may be shut down, operated at a low frequency, or operated at a high frequency.

11. The control method for the electrical box cooling device according to claim 10, characterized in that, When the component is equipped with a temperature sensor, the conveying component (22) is a fan, and the second air inlet (301) is equipped with a valve, Within n seconds before the air conditioner is turned on, the temperature of the components gradually rises. The temperature sensor detects that the temperature of the components is lower than T0 temperature, closes the valve and the conveyor (22), and the internal air of the electrical box body (3) naturally convects to dissipate heat from the components. When the air conditioner is turned on and running for m seconds, within t seconds, the temperature sensor detects that the temperature of the component exceeds T0 temperature, opens the valve, and the conveying component (22) operates at low frequency, and the cooling energy flows to the second air inlet (301) at the first speed. When the air conditioner is turned on and running for k seconds, within t seconds, the temperature sensor detects that the temperature of the component exceeds the temperature of T1, opens the valve, and the conveying component (22) runs at high frequency, and the cold air flows to the second air inlet (301) at the second speed. Wherein, the second speed is greater than the first speed; Within h seconds after the air conditioner stops running, the valve is opened and the conveyor (22) continues to run. Once the temperature of the component gradually decreases, the valve and the conveyor (22) are closed.

12. A refrigeration system, characterized in that, Includes a compressor (4), a heat exchanger (5), and an electrical box cooling device as described in claim 1, wherein the compressor (4) has a suction pipe (1), and one end of the suction pipe (1) away from the compressor (4) is connected to the heat exchanger (5).

13. An air conditioner, comprising a refrigeration system, characterized in that, The refrigeration system is the refrigeration system according to claim 12.

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