Cooling and dust removal devices, temperature control systems and operating machinery

Abstract

The present invention relates to the field of cooling and dust removal, and provides a cooling and dust removal device, a temperature control system, and an operating machine, including a spray system, a refrigeration device, and an on / off valve. When the on / off valve, refrigeration device, and spray system are activated, the spray system sprays water toward the water inlet of the engine hood, and the refrigeration device cools the water in the spray system. When air enters the engine hood, it first comes into contact with the water sprayed by the spray system. The water cools the air and simultaneously settles dust in the air, allowing the radiator to effectively cool the engine and also solving the problem of radiator blockage caused by excessive dust.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling and dust removal, and in particular to a cooling and dust removal device, a temperature regulating system and an operating machine. Background Art

[0002] Operating machinery in harsh environments often prevents engines from cooling down quickly, leading to excessively high engine water temperatures. For example, when operating in dusty conditions, the radiator can easily become clogged due to the high dust content, reducing its cooling efficiency. This can lead to excessively high engine water temperatures and poor air conditioning cooling. In the event of a fire, high ambient temperatures can also trigger engine water temperature alarms, potentially causing the machinery to stall and, in severe cases, endangering the operator's safety.

[0003] In the prior art, protective nets are often added in front of radiators. However, these nets can only filter out large debris like leaves, leaving fine dust completely unavailable. This can lead to dust clogging the radiator and causing the water to overheat. During emergency fire rescue operations, high-pressure water cannons are often used to cool down the machinery. However, since the machinery is in motion, the cannons cannot be adjusted in time to provide cooling.

[0004] Therefore, how to solve the problem of excessive engine water temperature caused by harsh working conditions in the prior art has become a technical problem that technicians in this field urgently need to solve. Summary of the Invention

[0005] The present invention provides a cooling and dust removal device, which is used to solve the defect in the prior art that the engine water temperature is too high due to severe working conditions, and achieves the effect of preventing the engine water temperature from being too high.

[0006] The present invention provides a cooling and dust removal device for connecting to an air conditioning system of an operating machine, wherein the air conditioning system includes a compressor, a condenser, and an evaporator connected end to end. The cooling and dust removal device includes:

[0007] a spray system, the spray system being used to spray water toward the air inlet of the engine hood;

[0008] a refrigeration device, the refrigeration device being arranged on the pipeline of the spray system, with one end of the refrigeration device being connected between the condenser and the evaporator, and the other end of the refrigeration device being connected between the compressor and the evaporator;

[0009] A switch valve is connected between the refrigeration device and the air-conditioning system, and the switch valve can selectively open or close the connection between the refrigeration device and the air-conditioning system.

[0010] According to the cooling and dust removal device provided by the present invention, the spray system includes a water supply device, a water pump and a nozzle connected in sequence, and the nozzle is arranged on the outside of the engine hood and faces the air inlet of the engine hood.

[0011] According to the cooling and dust removal device provided by the present invention, the refrigeration device is arranged on the pipeline between the water pump and the nozzle.

[0012] According to the cooling and dust removal device provided by the present invention, a clutch is provided between the compressor and the engine.

[0013] The cooling and dust removal device provided according to the present invention further includes a controller, which is electrically connected to the switch valve, the clutch and the water pump.

[0014] The cooling and dust removal device provided according to the present invention further includes a temperature sensor, which is communicatively connected to the controller.

[0015] The cooling and dust removal device provided according to the present invention further includes a dust sensor, which is communicatively connected to the controller.

[0016] According to the cooling and dust removal device provided by the present invention, the nozzle has a water mist mode and a water curtain mode, and can be switched between the water mist mode and the water curtain mode.

[0017] The present invention also provides a temperature regulating system, comprising the above-mentioned cooling and dust removing device.

[0018] The present invention also provides an operating machine, comprising the above-mentioned cooling and dust removal device or the above-mentioned temperature regulation system.

[0019] The cooling and dust removal device provided by the present invention includes a spray system, a refrigeration device, and an on-off valve. The spray system is used to spray water toward the air inlet of the engine hood. The refrigeration device is disposed on the piping of the spray system and is used to cool the water in the spray system. The refrigeration device is used to connect to the air conditioning system of the operating machine, which includes a compressor, a condenser, and an evaporator connected in an end-to-end sequence. One end of the refrigeration device is connected between the condenser and the evaporator, and the other end of the refrigeration device is connected between the compressor and the evaporator. The on-off valve is disposed between the refrigeration device and the air conditioning system and can open or close the connection between the refrigeration device and the air conditioning system. When the operating machine is operating in a normal environment and the engine water temperature is normal, the spray system is in the off state, and the on-off valve is also in the off state. When the operating machine is operating in dusty conditions, the spray system can be independently opened and sprayed toward the water inlet of the engine hood. This causes dust in the air entering the engine hood to mix with the water and settle, preventing dust from entering the engine hood and clogging the radiator on the front side of the engine. When the operating machine is working in a high-temperature environment, the compressor, the switch valve and the spray system can be turned on at the same time. At this time, the air-conditioning system is running, and because the switch valve is open, the refrigerant in the air-conditioning system can enter the refrigeration device. The refrigerant vaporizes in the refrigeration device and absorbs the heat of the water in the spray system, cooling the water in the spray system pipeline. Finally, the spray system sprays the cooled water to the water inlet position of the engine hood. In this way, the spray water can isolate the external high temperature from the engine, providing a suitable working environment for the engine, and the spray water can also cool the air entering the engine hood. At the same time, in the process of spraying cooling water, the cooling water can also settle the surrounding dust. The cooling and dust removal device provided by the present invention can selectively cool or remove dust from the air entering the engine hood according to the working environment, thereby solving the problem of excessively high engine water temperature of the operating machine under harsh working conditions in the related art.

[0020] The cooling and dust removal device provided by the present invention is also provided with a clutch between the compressor and the engine. When the compressor needs to work, the clutch can be engaged, and the engine drives the compressor to work through the clutch. When the compressor is not needed to work, the clutch is disengaged, and the power connection between the engine and the compressor is interrupted.

[0021] The cooling and dust removal device provided by the present invention also includes a controller, which is electrically connected to the switch valve, clutch and water pump, and can automatically control the start and stop of the switch valve, clutch and water pump through the controller.

[0022] Furthermore, in the temperature control system and the operating machine provided by the present invention, since both are provided with the cooling and dust removal device as described above, they have the same advantages as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of the cooling and dust removal device provided by the present invention;

[0025] Reference numerals:

[0026] 110: Compressor; 120: Condenser; 130: Expansion valve; 140: Evaporator; 210: Water tank; 220: Water pump; 230: Nozzle; 310: Controller; 320: Switch valve; 330: Electromagnetic clutch; 340: Refrigeration unit; 350: Temperature sensor; 360: Dust sensor. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0028] An engine hood is provided on the outside of the engine of the working machine. A radiator is provided on the outside of the engine to cool the engine. When the radiator is working, it needs to suck in the air outside the engine hood and blow it toward the engine. Therefore, an air inlet is provided on the engine hood at a position corresponding to the radiator.

[0029] When there is a lot of dust in the working environment of the operating machinery, the dust in the air will be filtered when the radiator inhales air. When a lot of dust accumulates on the radiator filter, it will cause the radiator to be blocked, which will lead to a decrease in the radiator's heat dissipation capacity and the inability to continue to effectively cool the engine, eventually causing the engine water temperature to exceed the normal level.

[0030] When operating machinery works in a high-temperature environment, such as during fire rescue, due to the high ambient temperature, the radiator's heat dissipation capacity cannot dissipate the heat from the engine in time, which may cause the engine water temperature to be too high, resulting in the hidden danger of equipment stalling, and in severe cases even endangering the driver's personal safety.

[0031] Especially when the operating machinery works in dusty fire conditions, the above problems are more serious.

[0032] Therefore, in order to solve the above technical problems, the present invention provides a cooling and dust removal device for isolating high-temperature air from the engine of the working machine and settling dust in the surrounding environment.

[0033] The following combination Figure 1 The present invention describes a cooling and dust removal device, a temperature adjustment system and a working machine.

[0034] Every work machine is equipped with an air conditioning system to regulate the temperature of the air inside the cab. This system typically includes a compressor 110, a condenser 120, an expansion valve 130, and an evaporator 140, which are connected end-to-end.

[0035] The refrigeration process of the air conditioning system is as follows: Compressor 110 draws in low-temperature, low-pressure refrigerant gas at the outlet of evaporator 140, compresses it into high-temperature, high-pressure superheated refrigerant gas, and then discharges it from compressor 110. The high-temperature, high-pressure superheated refrigerant gas then enters condenser 120. Due to the decrease in pressure and temperature, the high-temperature, high-pressure superheated refrigerant gas condenses into refrigerant liquid, releasing a large amount of heat. The higher-temperature, high-pressure refrigerant liquid then passes through expansion valve 130. After passing through expansion valve 130, the refrigerant liquid increases in volume, causing its pressure and temperature to drop sharply. It then exits expansion valve 130 in a mist-like state and enters evaporator 140. Since the boiling point of the refrigerant at this point is much lower than the temperature inside evaporator 140, the refrigerant liquid evaporates into gas, absorbing a large amount of ambient heat during the evaporation process. The low-temperature, low-pressure refrigerant vapor then enters compressor 110 again. This cycle repeats itself, thereby lowering the temperature of the air surrounding evaporator 140.

[0036] The cooling and dust removal device provided by the present invention includes a spray system, a refrigeration device 340 and a switch valve 320.

[0037] The spray system can be installed on the outside of the engine hood, and the spray system is set toward the air intake position of the engine hood, and can spray water into the air intake position. The spray system has two functions. One is the dust removal function, which can spray water mist at the air intake position of the engine hood. When the radiator draws air through the air intake of the engine hood, the air first passes through the water mist, and the dust in the air combines with the water mist and settles, preventing it from being sucked into the radiator and clogging the radiator. The other function is the cooling function. A water curtain can be formed at the air intake position of the engine hood to form an insulating belt. When the high-temperature air enters the engine hood, it will pass through the water curtain. In the process of passing through the water curtain, the water curtain can cool the high-temperature air and also settle the dust in the air.

[0038] Refrigeration unit 340 is installed in the piping of the spray system to cool the water in the spray system. One end of the refrigerant inlet of refrigeration unit 340 is connected between the refrigerant outlet of condenser 120 and the refrigerant inlet of evaporator 140, and one end of the refrigerant outlet of refrigeration unit 340 is connected between the inlet of compressor 110 and the refrigerant outlet of evaporator 140.

[0039] Specifically, one end of the refrigerant inlet of the refrigeration device 340 can be connected between the refrigerant outlet of the condenser 120 and the refrigerant inlet of the expansion valve 130, or one end of the refrigerant inlet of the refrigeration device 340 can be connected between the refrigerant outlet of the expansion valve 130 and the refrigerant inlet of the evaporator 140.

[0040] The refrigeration device 340 can also be an evaporator 140. When one end of the refrigerant inlet of the refrigeration device 340 is connected between the refrigerant outlet of the condenser 120 and the refrigerant inlet of the expansion valve 130, an expansion valve 130 can be set on the pipeline connecting the refrigeration device 340 and the air-conditioning system.

[0041] Of course, the pipeline between the refrigeration device 340 and the air-conditioning system is longer, and the expansion valve 130 may not be used. The refrigerant passing through the condenser 120 will automatically complete the pressure reduction process when flowing in the pipeline upstream of the refrigeration device 340.

[0042] When one end of the refrigerant inlet of the refrigeration device 340 is connected between the refrigerant outlet of the expansion valve 130 and the refrigerant inlet of the evaporator 140 , the refrigeration device 340 can share one expansion valve 130 with the air conditioning system.

[0043] The switch valve 320 is connected between the refrigerant inlet of the refrigeration device 340 and the air-conditioning system. The switch valve 320 can connect the refrigeration device 340 and the air-conditioning system, or cut off the connection between the refrigeration device 340 and the air-conditioning system.

[0044] When the operating machine is operating in a normal environment and the engine water temperature is normal, there is no need to cool the air entering the engine hood, nor is there any need to perform dust settling work. At this time, the switch valve 320 can be disconnected, the refrigeration device 340 is in an idle state, and the spray system is also in a stopped state. If the compressor 110 is turned on at this time, the refrigerant will flow through the compressor 110, the condenser 120, the expansion valve 130 and the evaporator 140 in sequence, and finally flow back to the compressor 110, continuously circulating. The evaporator 140 cools the air in the cab, and the condenser 120 discharges the heat of the air in the cab to the outside of the cab. The refrigeration device 340 is in a stopped state.

[0045] When the working environment of the operating machinery is dusty and the water temperature of the engine is within the normal range, in order to prevent dust from clogging the radiator and causing the radiator to be unable to fully cool the engine, only the spray system can be started to spray water mist at the air inlet of the engine hood. When the air enters the air inlet of the engine hood, it first passes through the water mist, which combines with the dust in the air and settles, preventing it from being inhaled by the heat dissipation and causing radiator blockage.

[0046] When the working environment temperature of the operating machinery is high, in order to prevent the problem that the radiator's heat dissipation capacity is insufficient to reduce the engine temperature to a normal level, the spray system, the switch valve 320 and the compressor 110 can be turned on at the same time. At this time, the refrigeration device 340 is connected to the air-conditioning system. The refrigeration device 340 cools the water in the spray system. The spray system can spray water in the form of a water curtain, so that the cooling water covers the outside of the air inlet of the engine hood to form an insulating belt to prevent hot air from entering the engine hood. Before the high-temperature air enters the engine hood, it will first pass through the water curtain formed by the cooling water. The air cools down in the process of passing through the water curtain. After cooling, it enters the engine hood through the air inlet. The radiator blows the cooled air to the engine to cool the engine.

[0047] If there is dust in the air at this time, the dust will settle under the action of the water curtain when the air passes through the water curtain and will not enter the engine cover with the air, thus preventing the radiator from being blocked.

[0048] The specific operating principle is as follows: Since condenser 120 and expansion valve 130 are part of the air conditioning system, they are normally open. When on-off valve 320 is open, the refrigerant discharged from the refrigerant outlet of condenser 120 is split into two paths, entering refrigeration unit 340 and expansion valve 130 respectively. Within refrigeration unit 340, the refrigerant absorbs heat and evaporates into gas. During the evaporation process, it absorbs a large amount of ambient heat. Since refrigeration unit 340 is located outside the sprinkler system piping, it absorbs the temperature of the water in the sprinkler system piping, lowering the water temperature there. The refrigerant liquid entering expansion valve 130 increases in volume, causing its pressure and temperature to drop sharply. It then exits expansion valve 130 in a mist-like state and enters evaporator 140. Since the boiling point of the refrigerant is much lower than the temperature inside evaporator 140, the refrigerant liquid evaporates into gas, absorbing a large amount of heat from the cabin air during the evaporation process. Finally, the two refrigerant paths merge into one path, entering compressor 110 for the next cycle.

[0049] The cooling and dust removal device provided by the present invention is connected in parallel to a refrigeration device 340 on the air-conditioning system, thereby achieving cooling of the spray water without affecting the operation of the air-conditioning system of the operating machine.

[0050] The refrigeration device 340 may also be a structure in which the expansion valve 130 and the evaporator 140 are connected in series. To prevent the refrigeration device 340 from absorbing heat from the air, an insulation layer is wrapped around the outside of the refrigeration device 340 so that the refrigeration device 340 absorbs heat only from the piping of the spray system as much as possible.

[0051] In one embodiment of the present invention, the above-mentioned spray system includes a water supply device, a water pump 220 and a spray head 230 .

[0052] The water supply device may be a water tank 210 , which is disposed at an idle position of the working machine.

[0053] The water pump 220 is connected to the water tank 210 and the nozzle 230 via a pipeline. The water inlet of the water pump 220 is connected to the water outlet of the water tank 210 via a pipeline, and the water outlet of the water pump 220 is connected to the nozzle 230 via a pipeline. The water pump 220 can be an electric pump, and the power supply to the water pump 220 is provided by the power supply system of the working machine.

[0054] The nozzle 230 can be installed on the outside of the engine hood and can be located above the air intake of the engine hood. The nozzle 230 sprays water downward. The nozzle 230 has two spray modes: water mist mode and water curtain mode. The nozzle 230 can be manually rotated to switch between the water mist mode and the water curtain mode.

[0055] In order to reduce the flow time of water in the pipeline after cooling, the refrigeration device 340 may be arranged on the pipeline near the nozzle 230 .

[0056] In addition, the exposed portions of the pipes for connecting the water tank and the water pump 220 and for connecting the water pump 220 and the nozzle 230 may be protected by heat insulating sleeves.

[0057] In one embodiment of the present invention, the on-off valve 320 may be a two-way valve. The refrigerant outlet of the condenser 120 and the refrigerant inlet of the expansion valve 130 are directly connected via a first pipeline, and the refrigerant inlet of the refrigeration unit 340 is connected to the first pipeline via a second pipeline. The two-way valve is disposed on the second pipeline to control the opening and closing of the second pipeline. During use, the connection between the condenser 120 and the refrigeration unit 340 can be controlled by controlling the opening and closing of the two-way valve.

[0058] When the water in the spray system needs to be cooled, the two-way valve is opened to allow the refrigerant to pass through the refrigeration device 340 to cool the water in the pipeline. When the water in the spray system does not need to be cooled, the two-way valve is closed to prevent the refrigerant from passing through the refrigeration device 340.

[0059] Alternatively, the on-off valve 320 may be a three-way valve, wherein a first end of the three-way valve is connected to the refrigerant outlet of the condenser 120, a second end of the three-way valve is connected to the refrigerant inlet of the expansion valve 130, and a third end of the three-way valve is connected to the refrigerant inlet of the refrigeration unit 340. The first and second ends of the three-way valve are normally open, and a valve core is provided at the third end of the three-way valve, which can open or close the third end.

[0060] When the water in the spray system needs to be cooled, the valve core of the three-way valve can be connected to the third end. At this time, the condenser 120, the expansion valve 130 and the refrigeration device 340 are in a conductive state, and the refrigerant can enter the expansion valve 130 and the refrigeration device 340 respectively. After passing through the expansion valve 130, it is vaporized in the evaporator 140, absorbs the temperature in the cab, and cools the cab. At the same time, it absorbs the temperature of the water in the pipeline in the refrigeration device 340 to lower the temperature of the water.

[0061] When there is no need to cool the water in the spray system and only the cab needs to be cooled, the valve core of the three-way valve can be closed, and only the condenser 120 and the expansion valve 130 are connected, so that all the refrigerant flows to the expansion valve 130 and the evaporator 140, vaporizes in the evaporator 140, and absorbs the heat in the cab to cool the cab.

[0062] In one embodiment of the present invention, compressor 110 may be driven by the engine of the work machine, and the input shaft of compressor 110 may be connected to the power take-off port of the engine. While the work machine is operating, the engine is in continuous rotation, but compressor 110 operates intermittently. If compressor 110 were directly connected to the engine, it would also have to rotate continuously.

[0063] Therefore, to achieve intermittent operation of the compressor 110, a clutch can be provided between the input shaft of the compressor 110 and the power take-off port of the engine. When the compressor 110 is required to operate, the clutch can be engaged to establish a power connection between the compressor 110 and the engine. When the compressor 110 is not required to operate, the clutch can be disengaged to interrupt the power connection between the compressor 110 and the engine.

[0064] In one embodiment of the present invention, the cooling and dust removal device may further include a controller 310 .

[0065] The two-way valve may be a two-way solenoid valve electrically connected to the controller 310. When the controller 310 outputs a high level to the two-way solenoid valve, the two-way solenoid valve is turned on, and when the controller 310 outputs a low level to the two-way solenoid valve, the two-way solenoid valve is turned off. For example, a button may be provided in the cab. When the button is pressed, the controller 310 outputs a high level to the two-way solenoid valve, and when the button is released, the controller 310 outputs a low level to the two-way solenoid valve.

[0066] The three-way valve mentioned above has the same principle as the two-way valve. Although it is a three-way valve, it is only necessary to control the third end of the three-way valve to be turned on and off.

[0067] The water pump 220 is provided with a solenoid valve, which controls the opening or closing of the water pump 220. The solenoid valve is electrically connected to the controller 310. When the path connecting the controller 310 to the solenoid valve outputs a high level to the solenoid valve, the solenoid valve is energized and the water pump 220 is turned on. When the path connecting the controller 310 to the solenoid valve outputs a low level to the solenoid valve, the solenoid valve is de-energized and closed, and the water pump 220 is turned off.

[0068] The above-mentioned clutch can be an electromagnetic clutch 330, which is electrically connected to the controller 310. When one path connecting the controller 310 to the electromagnetic clutch 330 outputs a high level to the electromagnetic clutch 330, the electromagnetic clutch 330 is engaged, and the engine can drive the compressor 110 to operate. When one path connecting the controller 310 to the electromagnetic clutch 330 outputs a low level to the electromagnetic clutch 330, the electromagnetic clutch 330 is disengaged, the power connection between the engine and the compressor 110 is interrupted, and the compressor 110 stops operating.

[0069] To achieve automated control of the on-off valve 320, one embodiment of the present invention further includes a temperature sensor 350. The temperature sensor 350 can be, but is not limited to, installed on the engine's radiator. The temperature sensor 350 is in communication with the controller 310 and can transmit temperature signals to the controller 310. The controller 310 analyzes whether the temperature signal exceeds a preset value. If so, it simultaneously sends instructions to the on-off valve 320, the electromagnetic clutch 330, and the solenoid valve of the water pump 220. The electromagnetic clutch 330 engages, the engine drives the compressor 110 to operate, and the on-off valve 320 opens the passage from the condenser 120 to the refrigeration unit 340. The refrigerant fully absorbs the heat of the water inside the spray system through phase changes, achieving the purpose of lowering the water temperature of the spray water. The nozzle 230 can be manually adjusted to form a fan-shaped water curtain to form an insulating belt to cool the hot air entering the engine hood in advance. If the overtemperature does not exceed the preset value, the system is operating normally.

[0070] The system also includes a dust sensor 360, which can be, but is not limited to, located on the engine's radiator. Dust sensor 360 is communicatively connected to controller 310 and can transmit dust parameter signals to controller 310. Controller 310 then analyzes whether the diameter and concentration of particulate matter in the air currently exceed preset values. If so, controller 310 sends a command to the solenoid valve of water pump 220, causing it to start supplying water to nozzle 230. Nozzle 230 can be manually adjusted to spray mode, allowing the water mist to fully mix with the dust for effective dust removal. If the preset values ​​are not exceeded, the system operates normally.

[0071] The present invention also provides a temperature control system including the aforementioned cooling and dust removal device. The system can be installed on an operating machine such as an excavator or a fire truck. The system can cool the engine or remove dust from the environment surrounding the engine radiator, depending on the situation. The inclusion of the aforementioned cooling and dust removal device provides the same advantages as those described above.

[0072] The present invention also provides an operating machine, which may be but is not limited to an excavator, a crane, a fire truck, etc. Since the operating machine is provided with the cooling and dust removal device as described above or the temperature regulation system as described above, it has the same advantages as described above.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A cooling and dust removal device, used for connecting to an air conditioning system of an operating machine, wherein the air conditioning system comprises a compressor (110), a condenser (120) and an evaporator (140) connected in sequence end to end, characterized in that: The cooling and dust removal device comprises: A spray system, the spray system being used to spray water toward the air inlet of an engine hood, the spray system comprising a water supply device, a water pump (220), and a spray head (230) connected in sequence, the spray head (230) being arranged on the outside of the engine hood and facing the air inlet of the engine hood, the spray head (230) having a water mist mode and a water curtain mode, and being switchable between the water mist mode and the water curtain mode; a refrigeration device (340), the refrigeration device (340) being arranged on a pipeline between the water pump (220) and the nozzle (230), with one end of the refrigeration device (340) being connected between the condenser (120) and the evaporator (140), and the other end of the refrigeration device (340) being connected between the compressor (110) and the evaporator (140); A switch valve (320) is connected between the refrigeration device (340) and the air-conditioning system, and the switch valve (320) can selectively open or close the connection between the refrigeration device (340) and the air-conditioning system.

2. The cooling and dust removal device according to claim 1, characterized in that: A clutch is provided between the compressor (110) and the engine.

3. The cooling and dust removal device according to claim 2, characterized in that: The invention also includes a controller (310), wherein the controller (310) is electrically connected to the switch valve (320), the clutch, and the water pump (220).

4. The cooling and dust removal device according to claim 3, characterized in that: It also includes a temperature sensor (350), which is communicatively connected to the controller (310).

5. The cooling and dust removal device according to claim 3 or 4, characterized in that: It also includes a dust sensor (360), which is communicatively connected to the controller (310).

6. A temperature control system, characterized in that: It comprises the cooling and dust removal device as described in any one of claims 1 to 5.

7. A working machine, characterized in that: It comprises the cooling and dust removal device according to any one of claims 1 to 5 or the temperature regulation system according to claim 6.

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