Air conditioning supply circulation system for a production plant

Abstract

The application provides an air conditioning supply circulating system for a production workshop, which comprises a water chiller unit, a soft water device, a boiler device, a heat exchanger, a fan and a radiator; the water chiller unit is connected with the heat exchanger through a first pipeline, the heat exchanger is connected with the radiator through a second pipeline, and the heat exchanger is connected with the soft water device through a third pipeline; high-temperature and high-pressure refrigerant in the water chiller unit is subjected to heat exchange with soft water in the soft water device through the heat exchanger, the refrigerant after primary cooling is subjected to secondary cooling through the radiator and then flows back into the water chiller unit to circulate; the radiator is connected with an air inlet of the boiler device through an air duct, and the fan is arranged on the radiator to blow and cool fins of the radiator and send hot air into the boiler device through the air duct for waste heat utilization. The application can improve energy utilization rate of the production workshop and reduce production cost of enterprises.

Description

Technical Field

[0001] This invention relates to the technical field of air conditioning supply in workshops, and more particularly to an air conditioning supply circulation system for production workshops. Background Technology

[0002] Many large industrial enterprises have installed chillers, vacuum pumps, boilers, and other equipment. In summer, these enterprises typically only utilize the cooling capacity of the chillers during production. The cooling generated by the chillers is then supplied to air conditioners, which cool the air before distributing it to workshops and offices to lower the temperature. The heat generated by the chillers is directly discharged into the outdoor atmosphere or released into the atmosphere through cooling towers. Simultaneously, when vacuum pumps are used to create a vacuum in some equipment within the workshop, the air extracted by these pumps for production is also released into the atmosphere. This results in the waste of heat generated by the chillers and the energy extracted from the workshop air by the vacuum pumps, and also has a negative impact on the surrounding environment. Therefore, it is of great significance to find ways to utilize the heating and cooling energy generated by chillers and / or vacuum pumps in production workshops. Summary of the Invention

[0003] This invention provides an air conditioning supply circulation system for production workshops, which solves the problems of low energy reuse rate of existing equipment such as chillers, vacuum pumps and boilers in production workshops, which easily leads to energy waste and low utilization of waste heat. It can improve the energy utilization rate of production workshops and reduce the production costs of enterprises.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] An air conditioning supply circulation system for a production workshop includes: a chiller unit, a water softener, a boiler, a heat exchanger, a fan, and a radiator;

[0006] The chiller unit is connected to the heat exchanger through a first pipeline, the heat exchanger is connected to the radiator through a second pipeline, and the heat exchanger is connected to the water softener through a third pipeline. The high-temperature and high-pressure refrigerant in the chiller unit exchanges heat with the soft water in the water softener through the heat exchanger. After the refrigerant is cooled down for the first time, it is cooled down again through the radiator and then flows back into the chiller unit for circulation.

[0007] The radiator is connected to the air inlet of the boiler equipment through an air duct. The fan is installed on the radiator to blow air to cool the radiator fins and send the hot air into the boiler equipment through the air duct for waste heat utilization.

[0008] Preferably, the chiller unit includes: a compressor, a condenser, an expansion valve, and an evaporator;

[0009] The compressor is connected to the heat exchanger via a first pipeline. The compressor compresses the gaseous refrigerant into a high-temperature, high-pressure gas, which is then cooled by the heat exchanger and / or the radiator before passing through the condenser to further cool and condense into a liquid refrigerant. The liquid refrigerant passes through the expansion valve and the evaporator, allowing it to absorb heat from the cooling water and become a gaseous refrigerant. The gaseous refrigerant is then returned to the compressor for circulation.

[0010] Preferably, it also includes: a cooling tower;

[0011] The cooling tower is connected to the condenser through a first cooling water pipe. The cooling water in the cooling tower absorbs heat from the coolant flowing through the condenser through the first cooling water pipe, so that the gaseous refrigerant condenses into a liquid refrigerant.

[0012] Preferably, it also includes: workshop air conditioners;

[0013] The workshop air conditioner is connected to the evaporator through a second cooling water pipe. The liquid refrigerant in the evaporator absorbs heat from the cooling water of the workshop air conditioner through the second cooling water pipe, causing the liquid refrigerant to evaporate into a gaseous refrigerant and lowering the temperature of the cooling water in the workshop air conditioner, thereby cooling the workshop.

[0014] Preferably, the water softening device includes: a water softening station, a water softening tank, and a degassing tank;

[0015] The soft water tank is connected to the heat exchanger and the degassing tank in sequence via soft water pipelines. The soft water in the soft water tank absorbs heat from the refrigerant of the chiller unit through the heat exchanger, and then flows into the degassing tank to be heated to 100 degrees Celsius to remove soluble gases from the soft water.

[0016] Preferably, the boiler equipment includes: a boiler and a steam distribution cylinder;

[0017] The boiler is connected to the steam distributor via a steam pipeline, and the steam distributor is connected to the degassing box via a pipeline.

[0018] The heating steam in the boiler is sent to the degassing box or the heat-using equipment in the workshop through the steam distribution cylinder.

[0019] Preferably, the boiler equipment further includes: a blower;

[0020] The blower is located at the air inlet of the boiler and is connected to the air duct connected to the radiator, so as to send the hot air from the radiator into the boiler to mix with the fuel.

[0021] The air duct is equipped with a fresh air intake vent, and a valve is installed at the vent to control the opening and closing of the vent.

[0022] Preferably, it also includes: a negative pressure suction device;

[0023] The negative pressure suction device is installed in the workshop to draw negative pressure from the negative pressure equipment. The negative pressure suction device is connected to the air inlet of the cooling tower and the boiler equipment through air pipes respectively.

[0024] When the air temperature in the workshop is lower than the set temperature threshold, the negative pressure suction device will send the suctioned cold air into the cooling tower to cool the cooling water.

[0025] When the air temperature in the workshop exceeds the set temperature threshold, the negative pressure suction device will send the extracted hot air into the boiler equipment for waste heat utilization.

[0026] Preferably, the cooling tower is connected to the cooling pipe of the negative pressure suction device via a fourth pipe, so that the cooling water in the cooling tower cools the negative pressure suction device through the fourth pipe.

[0027] Preferably, the negative pressure suction device includes: a negative pressure pump, a circulation pump, and a negative pressure control valve assembly;

[0028] The negative pressure pump is used to evacuate air from the negative pressure equipment. The cooling pipe of the negative pressure pump is connected to the cooling tower through the fourth pipe. The fourth pipe is equipped with the circulation pump and control valve group to control the circulation of cooling water in the fourth pipe.

[0029] This invention provides an air conditioning supply circulation system for a production workshop. The system uses heat exchangers and radiators to transfer the heat generated by the refrigerant in the chiller to a water softening device and a boiler for waste heat utilization. This solves the problems of low energy reuse rate and energy waste caused by emissions from existing chillers, vacuum pumps, and boilers in production workshops. The system can improve the energy utilization rate of the production workshop and reduce the production cost of the enterprise. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below.

[0031] Figure 1 This is a schematic diagram of an air conditioning supply circulation system for a production workshop provided by the present invention.

[0032] Figure 2 This is a schematic diagram of the pipeline connection of an air conditioning supply circulation system in a production workshop provided by an embodiment of the present invention. Detailed Implementation

[0033] To enable those skilled in the art to better understand the embodiments of the present invention, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and implementation methods.

[0034] In response to the problem of low utilization rate of cold and heat energy generated by the emissions from equipment such as chillers, vacuum pumps, and boilers in current production workshops, this invention provides an air conditioning supply circulation system for production workshops. This system solves the problems of low reuse rate of cold and heat energy from the emissions of existing equipment such as chillers, vacuum pumps, and boilers in production workshops, which easily leads to energy waste and low utilization of waste heat. It can improve the energy utilization rate of production workshops and reduce the production costs of enterprises.

[0035] like Figure 1 and Figure 2 As shown, an air conditioning supply circulation system for a production workshop includes: a chiller unit, a water softening device, a boiler, a heat exchanger, a fan, and a radiator. The chiller unit is connected to the heat exchanger via a first pipe S1. The heat exchanger is connected to the radiator via a second pipe S2. The heat exchanger is connected to the water softening device via a third pipe S3. High-temperature, high-pressure refrigerant from the chiller unit exchanges heat with the softened water in the water softening device through the heat exchanger. After initial cooling, the refrigerant undergoes secondary cooling through the radiator and then flows back into the chiller unit for circulation. The radiator is connected to the air inlet of the boiler via an air duct S4. The fan is mounted on the radiator to blow air onto the radiator fins for cooling and then delivers the hot air through the air duct S4 into the boiler for waste heat utilization.

[0036] Specifically, such as Figure 2 As shown, when the chiller unit 111 is running, its compressor 26 compresses the gaseous refrigerant into a high-temperature, high-pressure gas. The compressed refrigerant flows out of the compressor 26 and through pipe 25 and electric valve 24 into the heat exchanger 23 to exchange heat with the boiler's soft water. After initial cooling, the refrigerant flows out of the heat exchanger 23 and through electric valve 29, pipe 30, and electric valve 60 into the radiator 54. The radiator 54 contains a fan 55. As the refrigerant passes through the radiator fins, the heat is blown away by the fan 55, cooling it down. The hot air, after absorbing heat in the radiator 54, is then transported to the boiler 49 through air ducts 58 and 51 and blower 50 to mix and burn with boiler fuel. Because the fresh air after heat exchange is warmer than the ambient air, fuel is saved. Thus, the heat generated during the chiller unit's cooling process is used to heat the boiler's soft water and fresh air, achieving the goal of fuel saving.

[0037] Furthermore, the chiller unit includes a compressor, a condenser, an expansion valve, and an evaporator. The compressor is connected to the heat exchanger via a first pipeline. The compressor compresses the gaseous refrigerant into a high-temperature, high-pressure gas, which is then cooled by the heat exchanger and / or the radiator before being cooled and condensed into liquid refrigerant by the condenser. The liquid refrigerant passes through the expansion valve and the evaporator, allowing it to absorb heat from the cooling water and become gaseous refrigerant. The gaseous refrigerant is then returned to the compressor for circulation.

[0038] The system also includes a cooling tower; the cooling tower is connected to the condenser via a first cooling water pipe S5, and the cooling water in the cooling tower absorbs heat from the coolant flowing through the condenser via the first cooling water pipe S5, so as to condense the gaseous refrigerant into a liquid refrigerant.

[0039] The system also includes: a workshop air conditioner; the workshop air conditioner is connected to the evaporator through a second cooling water pipe S6, and the liquid refrigerant in the evaporator absorbs heat from the cooling water of the workshop air conditioner through the second cooling water pipe S6, causing the liquid refrigerant to evaporate into a gaseous refrigerant and reducing the temperature of the cooling water of the workshop air conditioner, thereby cooling the workshop.

[0040] Specifically, such as Figure 2As shown, after being cooled again in radiator 54, the refrigerant flows out of radiator 54 and enters condenser 64 through electric valve 62, thermometer 65, and electric valve 66 to exchange heat with cooling water. Bypass electric valve 28 and bypass electric valve 61 are respectively located at the front end of heat exchanger 23 and radiator 54. If heat exchanger 23 or radiator 54 malfunctions, the refrigerant can enter the next stage through bypass electric valve 28 or bypass electric valve 61, respectively. The cooling water circulation pump 72 or cooling tower 79 operates at high and low loads based on the refrigerant temperature measured by thermometer 65. When thermometer 65 detects a high refrigerant temperature, requiring further cooling, circulation pump 72 operates. Cooling water absorbs heat and heats up in condenser 64, then flows out of condenser 64, through electric valve 68, circulation pump 72, pipe 77, and valve 78 into cooling tower 79 for cooling. After being cooled by cooling tower 79, the water flows out of cooling tower 79, through valve 73, pipe 74, pipe 71, and electric valve 67 back into condenser 64 to continuously cool the refrigerant, thus continuously cycling. When thermometer 65 detects a low refrigerant temperature, requiring only a small amount of cooling water or even no further cooling, circulation pump 72 and cooling tower 79 operate at low load or even stop operating, thereby saving energy. The refrigerant, after being cooled to a suitable temperature by the condenser 64, flows out of the condenser 64. The liquid refrigerant, passing through electric valve 63, pipe 31, pipe 27, and expansion valve 109, enters the evaporator 108. Inside the evaporator 108, the liquid refrigerant evaporates into gaseous refrigerant, absorbing heat from the chilled water. The cooled chilled water then flows out of the evaporator 108 and enters the air conditioner 101 via electric valve 107, pipe 106, and electric valve 105. The chilled water cools the air inside the air conditioner 101, creating cool air. This cool air is then blown out of the air conditioner 101 and transported to the workshop 94 via butterfly valve 99, duct 98, duct 100, duct 97, and butterfly valve 96 to lower the temperature of the workshop 94. Meanwhile, after cooling the chilled water in the evaporator 108, the gaseous refrigerant flows out of the evaporator 108 and re-enters the compressor 26 via pipe 110 for compression, thus continuously repeating the cycle.

[0041] Furthermore, the water softening device includes a water softening station, a water softening tank, and a degassing tank. The water softening tank is sequentially connected to the heat exchanger and the degassing tank via water softening pipelines, so that the softened water in the water softening tank absorbs heat from the refrigerant of the chiller unit through the heat exchanger, and then flows into the degassing tank for heating to 100 degrees Celsius to remove soluble gases from the water.

[0042] Furthermore, the boiler equipment includes a boiler and a steam distributor. The boiler is connected to the steam distributor via a steam pipeline, and the steam distributor is connected to the degassing box via a pipeline. The heating steam in the boiler is sent to the degassing box or heat-using equipment in the workshop through the steam distributor.

[0043] Furthermore, the boiler equipment also includes a blower; the blower is located at the air inlet of the boiler and connected to the air duct connected to the radiator, so as to send the hot air from the radiator into the boiler to mix with the fuel. The air duct is provided with a fresh air intake vent, and a valve is provided at the vent to control the opening and closing of the vent.

[0044] Specifically, such as Figure 2 As shown, the soft water tank 10 consists of two water tanks, a hot water tank 9 and a cold water tank 16. The hot water tank is equipped with a level gauge 6 and a vent pipe 4, and the cold water tank is equipped with a level gauge 15 and a vent pipe 14. When the level gauge 6 detects that the liquid level in the hot water tank 9 is low, or when the level gauge 15 detects that the liquid level in the cold water tank 16 is low, the soft water from the soft water station 1 can enter the hot water tank 9 through the electric valve 3 and the cold water tank 16 through the electric valve 13 respectively after passing through the pipe 2 to replenish the water. When the boiler is replenished with water, the soft water in the hot water tank 9 flows out first through pipe 12 and multi-way electric valve 18 into pipe 19. Only when the water level in the hot water tank 9 is low and there is a water shortage, the soft water in the cold water tank 16 flows through pipe 17 and multi-way electric valve 18 into pipe 19, then through water pump 20, pipe 21, and electric valve 22 into heat exchanger 23 to exchange heat with the refrigerant. The softened water, after absorbing heat and increasing its temperature, flows out of heat exchanger 23, then through electric valve 32, pipe 33, and electric valve 34 into degassing box 35, where it is heated to 100°C. After removing oxygen, carbon dioxide, and other gases from the soft water, it is pumped into boiler 49 via water pump 36. In boiler 49, the soft water is heated into steam. The steam then enters steam distribution cylinder 47 via valve 48, pipe 41, and valve 42. Part of the steam in steam distribution cylinder 47 is transported to production and heating equipment via valve 46 and pipe 45, while the remaining steam enters degassing box 35 via valve 44, pipe 43, pipe 39, and electric valve 40 to heat the soft water there to 100 degrees Celsius, thus removing the gases from the soft water. The removed hot air from degassing box 35 enters heater 8 via top pipes 37, 38, 11, 5, and 7 to heat the soft water in hot water tank 9. Because the soft water is saturated with various gases, and the dissolved gases decrease as the soft water temperature increases, the heat energy of the hot air emitted from degassing box 35 is absorbed by the soft water in hot water tank 9, while the gases are discharged through exhaust pipe 4. The air required for fuel combustion inside boiler 49 absorbs heat and is heated by radiator 54. It is then blown out by fan 55, and the hot air enters boiler 49 for combustion via pressure sensor 59, air duct 58, air duct 51, and blower 50. Because the air entering the boiler is at a higher temperature, fuel consumption is reduced. When pressure sensor 59 detects low air pressure or insufficient airflow, supplemental air can be supplied via air outlet 56, butterfly valve 57, and air duct 51 before entering boiler 49 via blower 50, thus preventing incomplete combustion due to insufficient air.

[0045] The system also includes a negative pressure suction device; this device is installed inside the workshop to create negative pressure, and is connected to the air inlets of the cooling tower and the boiler via air pipes. When the workshop air temperature is below a set temperature threshold, the negative pressure suction device draws in cold air and sends it into the cooling tower to cool the cooling water. When the workshop air temperature is above the set temperature threshold, the negative pressure suction device draws in hot air and sends it into the boiler for waste heat utilization.

[0046] In practical applications, some process equipment in the workshop requires negative pressure to operate. Therefore, a negative pressure pump is needed to draw air to provide negative pressure for the process equipment. The air drawn by the negative pressure pump is at a temperature similar to the workshop ambient temperature. In summer, the negative pressure pump draws cool air from the workshop and discharges it to the cooling tower, improving the cooling effect of the cooling tower and saving cooling tower energy. In winter, the negative pressure pump draws hot air from the workshop and discharges it to the boiler air intake system, increasing the boiler fresh air temperature and reducing boiler fuel consumption.

[0047] Furthermore, the cooling tower is connected to the cooling pipe of the negative pressure suction device via the fourth pipe S7, so that the cooling water in the cooling tower can cool the negative pressure suction device through the fourth pipe S7.

[0048] Furthermore, the negative pressure suction device includes: a negative pressure pump, a circulation pump, and a negative pressure control valve assembly. The negative pressure pump is used to evacuate air from the negative pressure device. The cooling pipe of the negative pressure pump is connected to the cooling tower through the fourth pipeline. The fourth pipeline is equipped with the circulation pump and the control valve assembly to control the circulation of cooling water within the fourth pipeline.

[0049] Specifically, such as Figure 2As shown, equipment 95 in workshop 94 requires negative pressure adsorption material. Negative pressure pump 90 continuously draws air from equipment 95, which is then pumped back into negative pressure pump 90 via valve 93, pipe 92, and valve 91. In summer, due to the lower workshop temperature, the air drawn by negative pressure pump 90 is at a lower temperature. Therefore, the air is then discharged from negative pressure pump 90 through valve 82, pipe 83, electric valve 80, and pipe 81 into cooling tower 79 to cool the cooling water, thereby improving the cooling effect of cooling tower 79 and reducing the operating load of the cooling tower fan, saving energy. In winter, due to the higher workshop temperature, the air drawn by negative pressure pump 90 is at a higher temperature. Therefore, the air is then pumped from negative pressure pump 90 through valve 82, pipe 83, electric valve 84, pipe 85, pipe 70, pipe 69, air outlet 53, and butterfly valve 52 into air duct 51, and then delivered to boiler 49 by blower 50 to provide high-temperature air for fuel combustion, thereby reducing fuel consumption. The heat generated by the negative pressure equipment itself can be cooled by cooling water. The cooling water flows out from the cooling tower 79, passes through valve 73, pipe 74, pipe 76, pipe 86, and electric valve 89, and enters the negative pressure pump 90. After cooling the negative pressure pump 90, the cooling water flows back into the cooling tower 79 through electric valve 88, circulating pump 87, pipe 75, pipe 77, and valve 78, and so on in a continuous cycle.

[0050] This system not only utilizes the cooling capacity generated by the chiller unit, but also uses the heat generated by the refrigerant in the chiller unit, which is compressed and heated, to heat the boiler's soft water. According to Dalton's law of partial pressures, the boiler soft water must be heated to above 100 degrees Celsius to remove oxygen, carbon dioxide, and other pollutants, thereby reducing oxidation and corrosion of the boiler. The hot steam generated during the heating process is discharged to the soft water tank. Since the soft water in the tank is saturated with oxygen and carbon dioxide, and the levels of these gases decrease as the temperature rises, the heat energy of the steam generated in the degassing tank is absorbed by the soft water in the tank, while the gases are discharged, thus saving energy. If the temperature of the high-temperature refrigerant remains high after heat exchange with the boiler soft water, it can reheat the boiler fresh air. The heat generated during the chiller's cooling process can then be used to heat the boiler soft water and fresh air, thus saving fuel. If the temperature of the high-temperature refrigerant is low after heat exchange with the boiler soft water and fresh air, the circulating pump or cooling tower fan will stop operating, saving energy. If the temperature of the high-temperature refrigerant is still high after heat exchange with the boiler soft water and fresh air, it will then exchange heat with the cooling water. The cooling water will absorb heat and then be cooled down by the cooling tower. At this point, the cooling tower will start operating, or even operate at a low load. The chiller will then deliver the cooling capacity to the air conditioner to lower the air temperature and then to the workshop to lower the workshop temperature.

[0051] Therefore, the present invention provides an air conditioning supply circulation system for a production workshop, which uses heat exchangers and radiators to send the heat generated by the refrigerant of the chiller unit to the soft water device and boiler equipment for waste heat utilization. This solves the problems of low energy reuse rate of existing chiller units, vacuum pumps and boilers in production workshops, which easily leads to energy waste and low waste heat utilization. It can improve the energy utilization rate of the production workshop and reduce the production cost of enterprises.

[0052] The structure, features, and effects of the present invention have been described in detail above with reference to the embodiments shown in the figures. The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the figures. Any changes made in accordance with the concept of the present invention, or equivalent embodiments modified to have equivalent changes, shall be within the protection scope of the present invention as long as they do not exceed the spirit covered by the specification and figures.

Claims

1. An air conditioning supply circulation system for a production workshop, characterized in that, include: Chillers, water softeners, boiler equipment, heat exchangers, cooling towers, workshop air conditioners, negative pressure suction equipment, fans and radiators; The chiller unit is connected to the heat exchanger through a first pipeline, the heat exchanger is connected to the radiator through a second pipeline, and the heat exchanger is connected to the water softener through a third pipeline. The high-temperature and high-pressure refrigerant in the chiller unit exchanges heat with the soft water in the water softener through the heat exchanger. After the refrigerant is cooled down for the first time, it is cooled down again through the radiator and then flows back into the chiller unit for circulation. The radiator is connected to the air inlet of the boiler equipment through the air duct. The fan is installed on the radiator to blow air to cool the radiator fins and send the hot air into the boiler equipment through the air duct for waste heat utilization. The chiller unit includes: a compressor, a condenser, an expansion valve, and an evaporator; The compressor is connected to the heat exchanger through a first pipeline. The compressor compresses the gaseous refrigerant into a high-temperature, high-pressure gas. After being cooled by the heat exchanger and the radiator, the gaseous refrigerant is cooled by the condenser and condensed into a liquid refrigerant. The liquid refrigerant passes through the expansion valve and the evaporator, so that it absorbs heat from the cooling water and becomes a gaseous refrigerant. The gaseous refrigerant is then returned to the compressor for circulation. The cooling tower is connected to the condenser through a first cooling water pipe. The cooling water in the cooling tower absorbs heat from the coolant flowing through the condenser through the first cooling water pipe, so as to condense the gaseous refrigerant into a liquid refrigerant. The workshop air conditioner is connected to the evaporator through a second cooling water pipe. The liquid refrigerant in the evaporator absorbs heat from the cooling water of the workshop air conditioner through the second cooling water pipe, causing the liquid refrigerant to evaporate into a gaseous refrigerant and reducing the temperature of the cooling water of the workshop air conditioner, thereby cooling the workshop. The water softening device includes: a water softening station, a water softening tank, and a degassing tank; The soft water tank is connected to the heat exchanger and the degassing tank in sequence through soft water pipelines, so that the soft water in the soft water tank absorbs heat from the refrigerant of the chiller unit through the heat exchanger, and then flows into the degassing tank for heating to 100 degrees Celsius to remove soluble gases from the soft water. The negative pressure suction device is installed in the workshop to draw negative pressure from the negative pressure equipment. The negative pressure suction device is connected to the air inlet of the cooling tower and the boiler equipment through air pipes respectively. When the air temperature in the workshop is lower than the set temperature threshold, the negative pressure suction device will send the suctioned cold air into the cooling tower to cool the cooling water. When the air temperature in the workshop is greater than the set temperature threshold, the negative pressure suction device will send the suctioned hot air into the boiler equipment for waste heat utilization. The cooling tower is connected to the cooling pipe of the negative pressure suction device through a fourth pipe, so that the cooling water in the cooling tower can cool the negative pressure suction device through the fourth pipe.

2. The air conditioning supply circulation system for the production workshop according to claim 1, characterized in that, The boiler equipment includes: a boiler and a steam distribution cylinder; The boiler is connected to the steam distributor via a steam pipeline, and the steam distributor is connected to the degassing box via a pipeline. The heating steam in the boiler is sent to the degassing box or the heat-using equipment in the workshop through the steam distribution cylinder.

3. The air conditioning supply circulation system for the production workshop according to claim 2, characterized in that, The boiler equipment also includes: a blower; The blower is located at the air inlet of the boiler and is connected to the air duct connected to the radiator, so as to send the hot air from the radiator into the boiler to mix with the fuel. The air duct is equipped with a fresh air intake vent, and a valve is installed at the vent to control the opening and closing of the vent.

4. The air conditioning supply circulation system for the production workshop according to claim 3, characterized in that, The negative pressure suction device includes: a negative pressure pump, a circulation pump, and a negative pressure control valve assembly; The negative pressure pump is used to evacuate air from the negative pressure equipment. The cooling pipe of the negative pressure pump is connected to the cooling tower through the fourth pipe. The fourth pipe is equipped with the circulation pump and control valve group to control the circulation of cooling water in the fourth pipe.

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