An air conditioning system with compatible industrial heating and cooling capacity

Abstract

The utility model relates to the technical field of chemical processing, specifically relates to a kind of air conditioning system with compatible industrial heating and refrigeration capacity, including the compressor, outdoor heat exchanger, expansion valve and indoor heat exchanger that are sequentially communicated and form loop by refrigerant pipe, still include heat exchange water tank, water supply pump and boiler sequentially communicated by pipeline, the condensate tank is communicated with the boiler by steam supply pipe, heat exchange end and the steam pipe that can be opened and closed are provided on the steam supply pipe, the heat exchange end is used to heat exchange with industrial heat equipment;The condensate tank is communicated with the boiler by the pipeline, the heat exchange water tank and the outdoor heat exchanger can heat exchange, water supply pipe is sequentially communicated on the heat exchange water tank and condensate tank, and supply pump is provided on the water supply pipe.

Description

Technical Field

[0001] This utility model relates to the field of chemical processing technology, specifically to an air conditioning system with compatible industrial heating and cooling capabilities. Background Technology

[0002] Cinnamic acid is a commonly used industrial raw material, primarily used in fragrances, food additives, pharmaceuticals, cosmetics, pesticides, and organic synthesis. It is also a crucial raw material for producing photoresist resins, mainly used in the synthesis of polyvinyl cinnamate (PVCA). PVCA is a classic negative photoresist resin with excellent corrosion resistance, resolution, and photosensitivity. Currently, the industrial production of cinnamic acid generally employs the styrene-carbon tetrachloride process. In this process, the reaction temperature is typically between 65 and 75°C, with the catalyst recovery stage at 120 to 135°C, and the subsequent hydrolysis phase at 115 to 113°C. Therefore, a significant amount of heat is required during the preparation of cinnamic acid. In the preparation of polyvinyl cinnamate from cinnamic acid, the synthesis mainly consists of two steps: preparation of cinnamoyl chloride and esterification reaction. The reflux reaction of cinnamoyl chloride requires a temperature of 20–80°C. However, during the middle stage of the esterification reaction, cinnamoyl chloride needs to be added under ice bath conditions of 0–5°C until the reaction is complete. Furthermore, the later stage requires holding at a temperature of 25–12°C. Therefore, from the perspective of industrial production of photoresist resin, it is necessary to simultaneously supply a large amount of heat and provide a certain low-temperature environment. For this purpose, manufacturers typically configure one heating system and one cooling system, with the two systems operating independently to adapt to different production stages.

[0003] Currently, industrial heating systems are generally conventional boiler steam systems, which are simple in structure, low in production cost, and suitable for various temperature requirements in industrial operations. Industrial refrigeration systems are generally conventional large-scale air conditioning systems, with a relatively simple structure consisting of four main components: evaporator, compressor, condenser, and expansion device, connected sequentially by piping. However, these two systems are independent and unconnected; the refrigeration system releases heat while cooling, leading to significant heat waste. To address this issue, patent CN201220564412.4 – an air-source heat pump air conditioning device with the ability to produce high-temperature hot water and provide cooling – offers advantages such as improved cooling capacity and the ability to produce higher-temperature hot water, achieving energy saving, carbon reduction, and high efficiency. However, its heating capacity mainly relies on heat exchange in the condenser. In industrial applications, the heat exchange temperature of a conventional condenser is generally around 55-65℃, reaching up to 80℃ under extreme conditions. This results in a relatively low water temperature in the hot water storage tank, limiting its industrial use, especially in the drying and heating of some chemical products, which consume large amounts of high-temperature steam. Clearly, conventional air-source heat pump air conditioning systems cannot meet these requirements. Furthermore, this heat exchange system is not compatible with existing industrial heating systems. Therefore, there is an urgent need for an air conditioning system that can simultaneously support both existing industrial heating and cooling systems to solve these problems. Utility Model Content

[0004] In order to overcome one of the shortcomings of the existing technology, the purpose of this utility model is to provide an air conditioning system with compatible industrial heating and cooling capabilities. This air conditioning system with compatible industrial heating and cooling capabilities has a simple structure, is compatible with existing industrial heating and cooling systems, and has low modification costs.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] An air conditioning system with compatible industrial heating and cooling capabilities includes a compressor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger connected in sequence and forming a loop via refrigerant pipes. It also includes a hot water tank, a water supply pump, and a boiler connected in sequence via pipes. The boiler is connected to a condensate tank via a steam supply pipe. The steam supply pipe is equipped with a heat exchange end and an openable / closable steam outlet pipe. The heat exchange end is used for heat exchange with industrial heat-using equipment. The condensate tank is connected to the boiler via the pipes. The hot water tank is capable of heat exchange with the outdoor heat exchanger. Both the hot water tank and the condensate tank are connected to water supply pipes, and a supply pump is installed on the water supply pipes.

[0007] Furthermore, the outdoor heat exchanger is an outdoor condenser, and the indoor heat exchanger is an indoor evaporator.

[0008] Furthermore, a four-way valve is connected to the refrigerant pipe in the area between the compressor outlet and the outdoor heat exchanger. The outlet of the indoor heat exchanger is connected to either of the remaining two ports of the four-way valve via a connecting pipe, and the inlet of the compressor is connected to the last port of the four-way valve via a connecting pipe.

[0009] Furthermore, a gas-liquid separator is provided on the connecting pipe between the inlet end of the compressor and the four-way valve.

[0010] Furthermore, the refrigerant pipe is located in the area between the outdoor heat exchanger and the expansion valve, and a flash valve and a flash evaporator are connected in sequence. The outlet end of the flash evaporator is connected to the inlet end of the compressor through a return pipe.

[0011] Furthermore, a control valve is installed on the return pipe.

[0012] Furthermore, a switching valve is installed on the steam outlet pipe.

[0013] Furthermore, a thermal deaerator is installed on the pipeline between the hot water tank and the boiler, and the condensate tank is connected to the steam inlet of the thermal deaerator via a steam pipe.

[0014] Furthermore, the boiler is connected to a tail gas discharge pipe, which is capable of exchanging heat with the condensate tank.

[0015] Furthermore, the steam supply pipe is also equipped with a flow meter and a regulating valve.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This utility model discloses an air conditioning system compatible with industrial heating and cooling capabilities. It adds a boiler steam system to an existing refrigeration system, utilizing the heat released from the refrigeration system to preheat the heat exchange tank, thus achieving energy recovery. Simultaneously, the steam supply pipe can provide high-temperature steam or facilitate heat exchange, adapting to the heat requirements of various chemical production processes. Both the heat exchange tank and the condensate tank are connected to water supply pipes, providing the warm water needed in chemical production, suitable for various water bath heating and mixing / dissolving processes. This air conditioning system is compatible with existing industrial heating and cooling systems, resulting in low modification costs.

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0020] Figure 2This is a schematic diagram of the structure of an improved embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of another embodiment of the present invention.

[0022] Explanation of icon numbers:

[0023] Refrigerant pipe 10, compressor 11, outdoor heat exchanger 12, expansion valve 13, indoor heat exchanger 14, four-way valve 15, connecting pipe 16, gas-liquid separator 17, flash evaporator 18, flash valve 19, return pipe 1a, control valve 1b.

[0024] Pipeline 20, hot water tank 21, water supply pump 22, boiler 23, steam supply pipe 24, condensate tank 25, heat exchange end 26, steam outlet pipe 27, water supply pipe 28, supply pump 29, switch valve 2a, thermal deaerator 2b, exhaust gas discharge pipe 2c. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0026] Reference Figures 1 to 3 An air conditioning system with industrial heating and cooling capabilities is shown, comprising a compressor 11, an outdoor heat exchanger 12, an expansion valve 13, and an indoor heat exchanger 14 connected in sequence and forming a loop via a refrigerant pipe 10. It also includes a hot water tank 21, a water supply pump 22, and a boiler 23 connected in sequence via a pipe 20. The boiler 23 is connected to a condensate tank 25 via a steam supply pipe 24. The steam supply pipe 24 is equipped with a heat exchange end 26 and an openable / closable steam outlet pipe 27. The heat exchange end 26 is used for heat exchange with industrial heating equipment. The condensate tank 25 is connected to the boiler 23 via the pipe 20. The hot water tank 21 is capable of heat exchange with the outdoor heat exchanger 12. Both the hot water tank 21 and the condensate tank 25 are connected to a water supply pipe 28, and a supply pump 29 is installed on the water supply pipe 28.

[0027] The circuit consisting of compressor 11, outdoor heat exchanger 12, expansion valve 13, and indoor heat exchanger 14 can be a conventional refrigeration circuit. In this case, outdoor heat exchanger 12 is an outdoor condenser, and indoor heat exchanger 14 is an indoor evaporator. Simultaneously, the water supplied by condensate tank 25 is warm water, suitable for supplying warm water to large distillers. In some embodiments, the water supply pipes 28 connected to the hot water tank 21 and condensate tank 25 can be connected to the same mixing tank, allowing the high-temperature hot water in the water supply pipe 28 to neutralize the low-temperature water in the hot water tank 21. It should be noted that in the above embodiments, the water supply pipe 28 and steam supply pipe 24 are adapted to different thermal environments. For example, the high-temperature steam supplied by the steam supply pipe 24 can be used for drying and baking chemicals, or for heating chemicals, while the water supply pipe 28 can be used for heat preservation of low-temperature chemicals or for low-temperature distillation.

[0028] If the circuit consisting of the compressor 11, outdoor heat exchanger 12, expansion valve 13, and indoor heat exchanger 14 is a conventional heating circuit, then the outdoor heat exchanger 12 is an outdoor evaporator, and the indoor heat exchanger 14 is an indoor condenser. In this case, the hot water tank 21, supplied with cold water through the water supply pipe 28, is suitable for the water bath reaction requirements of some low-temperature chemicals. The water supply pipe 28 connected to the condensate tank 25 still supplies hot water.

[0029] This air conditioning system, compatible with both industrial heating and cooling capabilities, adds a boiler 23 steam system to the existing refrigeration system. It utilizes the heat released from the refrigeration system to preheat the heat exchange tank 21, enabling energy recovery. Simultaneously, the steam supply pipe 24 can provide high-temperature steam or facilitate heat exchange, adapting to the heat requirements of various chemical production processes. Both the heat exchange tank 21 and the condensate tank 25 are connected to a water supply pipe 28, providing the warm water needed in chemical production, suitable for various water bath heating and mixing / dissolving processes. This air conditioning system is compatible with existing industrial heating and cooling systems, resulting in low modification costs.

[0030] See Figure 1 and Figure 2 In one embodiment of this application, in order to realize the design of the above-mentioned air conditioning system for cooling or heating, a four-way valve 15 is connected to the area between the outlet end of the compressor 11 and the outdoor heat exchanger 12 of the refrigerant pipe 10. The outlet end of the indoor heat exchanger 14 is connected to either of the remaining two connection ports of the four-way valve 15 through a connecting pipe 16, and the inlet end of the compressor 11 is connected to the last connection port of the four-way valve 15 through a connecting pipe 16.

[0031] In the above embodiments, in order to improve the energy efficiency ratio, a gas-liquid separator 17 is provided on the connecting pipe 16 between the inlet end of the compressor 11 and the four-way valve 15. The gas-liquid separator 17 is used to separate the high-pressure refrigerant flowing through the four-way valve 15 into gas and liquid, so that some of the gas that has been vaporized in the high-pressure refrigerant flowing out of the outlet end of the compressor 11 can re-enter the compressor 11 and be recompressed.

[0032] In the above-described improved embodiment, to further improve energy efficiency, a flash valve 19 and a flash evaporator 18 are sequentially connected to the refrigerant pipe 10 in the area between the outdoor heat exchanger 12 and the expansion valve 13. The outlet of the flash evaporator 18 is connected to the inlet of the compressor 11 via a return pipe 1a. After the high-pressure liquid refrigerant enters the flash valve 19, the pressure suddenly drops, and some of the liquid refrigerant evaporates or flashes, forming a gas-liquid two-phase flow. The flash evaporator 18 separates the gaseous refrigerant from the liquid refrigerant, preventing gas from entering the indoor heat exchanger 14 and affecting the heat exchange efficiency. By recovering the flashed gas, the energy consumption of the compressor 11 is reduced. In the above embodiment, a control valve 1b is provided on the return pipe 1a for easier control.

[0033] See Figure 3 In one embodiment of this application, to remove dissolved oxygen and other gases from the feedwater of the heating system and prevent corrosion of the heating equipment, a thermal deaerator 2b is installed on the pipe 20 between the heat exchange tank 21 and the boiler 23. The condensate tank 25 is connected to the steam inlet of the thermal deaerator 2b via a steam pipe. In this application, the heat exchange tank 21 serves as the external channel for adding water to the entire steam heating system; therefore, the thermal deaerator 2b is installed to remove dissolved oxygen from the water entering the heat exchange tank 21. Furthermore, the scenario applied in this application is chemical processing, which requires a large amount of steam and frequent water replenishment to the boiler 23. Therefore, the water temperature in the heat exchange tank 21 must be lower than the maximum temperature of the outdoor heat exchanger 12 to still achieve cooling for the outdoor heat exchanger 12.

[0034] In the above embodiments, to better recover energy, a tail gas discharge pipe 2c is connected to the boiler 23, and the tail gas discharge pipe 2c can exchange heat with the condensate tank 25. Furthermore, to facilitate control and monitoring of the steam supply, a flow meter and a regulating valve are also installed on the steam supply pipe 24. In addition, as described in the above embodiments, in some application scenarios, a large amount of steam needs to be consumed directly, such as in drying scenarios. In this case, to facilitate control of the steam discharge, a switching valve 2a is installed on the steam outlet pipe 27.

[0035] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An air conditioning system with compatible industrial heating and cooling capabilities, comprising a compressor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger connected sequentially and forming a circuit via refrigerant pipes, characterized in that, It also includes a hot water tank, a water supply pump, and a boiler connected in sequence by pipes. The boiler is connected to a condensate tank via a steam supply pipe. The steam supply pipe is equipped with a heat exchange end and an openable / closeable steam outlet pipe. The heat exchange end is used for heat exchange with industrial heat equipment. The condensate tank is connected to the boiler via the pipes. The hot water tank is able to exchange heat with the outdoor heat exchanger. Both the hot water tank and the condensate tank are connected to water supply pipes, and a supply pump is installed on the water supply pipes.

2. An air conditioning system with compatible industrial heating and cooling capabilities according to claim 1, characterized in that: The outdoor heat exchanger is an outdoor condenser, and the indoor heat exchanger is an indoor evaporator.

3. An air conditioning system with compatible industrial heating and cooling capabilities according to claim 1, characterized in that: The refrigerant pipe is connected to a four-way valve in the area between the compressor outlet and the outdoor heat exchanger. The outlet of the indoor heat exchanger is connected to either of the remaining two ports of the four-way valve via a connecting pipe. The inlet of the compressor is connected to the last port of the four-way valve via a connecting pipe.

4. An air conditioning system with compatible industrial heating and cooling capabilities according to claim 3, characterized in that: A gas-liquid separator is installed on the connecting pipe between the inlet end of the compressor and the four-way valve.

5. An air conditioning system with compatible industrial heating and cooling capabilities according to claim 1, characterized in that: The refrigerant pipe is located in the area between the outdoor heat exchanger and the expansion valve, and a flash valve and a flash evaporator are connected in sequence. The outlet end of the flash evaporator is connected to the inlet end of the compressor through a return pipe.

6. An air conditioning system with compatible industrial heating and cooling capabilities according to claim 5, characterized in that: A control valve is installed on the return pipe.

7. An air conditioning system with compatible industrial heating and cooling capabilities according to any one of claims 1-6, characterized in that: A switch valve is installed on the steam outlet pipe.

8. An air conditioning system with compatible industrial heating and cooling capabilities according to any one of claims 1-6, characterized in that: A thermal deaerator is installed on the pipeline between the heat exchange tank and the boiler, and the condensate tank is connected to the steam inlet of the thermal deaerator through a steam pipe.

9. An air conditioning system with compatible industrial heating and cooling capabilities according to any one of claims 1-6, characterized in that: The boiler is connected to a tail gas discharge pipe, which can exchange heat with the condensate tank.

10. An air conditioning system with compatible industrial heating and cooling capabilities according to any one of claims 1-6, characterized in that: The steam supply pipe is also equipped with a flow meter and a regulating valve.

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