Food production line water and heat management system and method of controlling the same

Abstract

The present application relates to the field of hot water management system of food production line, and particularly relates to a kind of food production line water supply and heat management system and control method thereof, system includes condensate recovery module, water storage heating module and domestic water supply module, utilize the condensate with residual heat generated in horizontal production line processing process, heat domestic water, sufficiently improve energy utilization, effectively reduce production cost;Tap water is heated to warm water by residual condensate water first, and then heated to hot water by steam, while ensuring energy utilization, improve the heating speed, meet the demand of domestic water;Water in living area is uniformly allocated and shunted by hot water storage tank, meet the water demand of different areas.

Description

Technical Field

[0001] This invention relates to the field of hot water management systems for food production lines, and more specifically to water supply and heat management systems and control methods for food production lines. Background Technology

[0002] Steam generators are widely used in food production processes to provide steam. A steam generator is a device that produces steam by heating liquids, typically consisting of a heater, a steam chamber, and a safety valve. When water is heated to boiling, water molecules convert into steam, generating a high-pressure steam flow. This high-pressure steam flow can be used to heat, sterilize, distill, and process food. High-temperature, high-pressure steam can rapidly and evenly heat food, killing bacteria and improving its hygienic quality. In the drying process of fruits and vegetables, steam drying can preserve the original nutrients and flavor, while also improving their shelf life and resistance to spoilage. Some foods require distillation to extract their essence or remove unwanted components. For example, in the process of making juice, steam generated by a steam generator can be used to distill away the water and unwanted components from fruits, thereby extracting pure juice. The steam condensate generated in the above-mentioned food production processes is usually directly discharged into designated sewage pipes or dedicated condensate collection tanks. Since the condensate itself retains residual heat, direct discharge would prevent the effective utilization of this residual heat. Therefore, this case arises. Summary of the Invention

[0003] One object of the present invention is to solve at least the above-mentioned problems through a water supply and heat management system and control method for a food production line.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a water supply and heat management system for a food production line, characterized in that: it includes a condensate recovery module, a water storage and heating module, and a domestic water supply module. The condensate recovery module transports residual condensate to the water storage and heating module through a pipeline and heats the cold tap water in the water storage and heating module. Steam is introduced into the water storage and heating module to heat the cold tap water. The residual condensate formed after the steam is cooled is transported back to the condensate recovery module through a pipeline. The water storage and heating module transports hot tap water to the domestic water supply module through a pipeline.

[0005] Preferably, the condensate recovery module includes a condensate collector, a steam trap, a steam pump, and a condensate storage tank. The inlet of the condensate collector is connected to a pipe for recovering condensate, and the outlet is connected to the inlet of the steam pump. The power interface of the steam pump is connected to a steam power pipe, and the outlet is connected to the condensate storage tank. A steam trap is provided between the steam power pipe and the collector.

[0006] Preferably, the water storage heating module includes a residual heat exchanger and a hot water storage tank. The residual heat exchanger is equipped with a connector for inputting residual condensate, a connector for outputting cooling condensate, a connector for inputting cold tap water, and a connector for outputting warm tap water. The connector for inputting residual condensate is connected to the outlet of the condensate storage tank via a pipe, and the connector for outputting warm tap water is connected to the inlet of the hot water storage tank via a pipe. The hot water storage tank is equipped with a steam heating pipe for heating tap water.

[0007] Preferably, the water storage heating module further includes a circulating mixer, which has a contraction chamber, a throat chamber, and a diffusion chamber connected in sequence. The diameter of the contraction chamber gradually decreases from the inlet to the throat chamber, while the throat chambers have the same diameter. The diameter of the diffusion chamber increases from the throat chamber to the outlet. A warm water suction pipe and a cold water suction pipe are provided at the connection between the throat chamber and the diffusion chamber. The inlet of the circulating mixer is connected to the outlet at the bottom of the hot water storage tank through a pipe. The outlet of the circulating mixer is connected to the inlet at the top of the hot water storage tank. The connector for outputting warm tap water on the residual heat exchanger is connected to the warm water suction pipe and the hot water storage tank through a pipe. The cold water suction pipe is connected to tap water. The hot water storage tank has an interface for direct connection to tap water.

[0008] Preferably, the water storage heating module further includes an instant heater, which consists of a straight pipe section and a tapered pipe section from top to bottom. The inner diameter of the straight pipe section remains constant, while the inner diameter of the tapered pipe section gradually decreases from the inlet to the straight pipe section. The straight pipe section and the tapered pipe section are surrounded by a steam pipe. The water inlet at the bottom of the instant heater is connected to the outlet of the waste heat exchanger via a pipe, and the water outlet at the top of the instant heater is connected to the domestic water supply module via a pipe. The steam pipe inlet and outlet of the instant heater are located at the top and bottom, respectively.

[0009] Preferably, it also includes a water supply and drainage module, which transports cold tap water to the water storage and heating module through a pipeline, and the water storage and heating module transports cooling condensate to the water supply and drainage module through a pipeline. The water supply and drainage module includes a tap water storage tank, a cooling tower water storage tank, and a vacuum water tank. The outlet of the tap water storage tank is connected to the tap water inlet of the waste heat exchanger and the inlet of the hot water storage tank through a pipeline. The inlets of the cooling tower water storage tank and the vacuum water tank are connected to the cooling condensate outlet of the waste heat exchanger through a pipeline. The outlet of the tap water storage tank is connected to the inlet of the cooling tower water storage tank through a pipeline.

[0010] Preferably, the domestic water supply module includes multiple sets of domestic water supply groups. Each domestic water supply group includes dormitory hot water tanks and building pipelines. The inlet of the dormitory hot water tank is connected to the tap water hot water pipe from the water storage and heating module. The outlet of the dormitory hot water tank, the building pipelines and the inlet of the dormitory hot water tank are connected by pipelines to form a water circulation loop. The dormitory hot water tanks of different domestic water supply groups are connected by pipelines.

[0011] Preferably, it also includes an auxiliary heating module, which forms a tap water circulation loop with the domestic water supply module through a pipeline. In the auxiliary heating module, the evaporator, gas-liquid separator, heat pump compressor, air source heat exchanger, liquid storage tank, filter, and expansion valve sequentially constitute a refrigerant loop. The tap water outlet on the air source heat exchanger is connected to the inlet of the dormitory hot water tank, and the tap water inlet is connected to the outlet of the dormitory hot water tank.

[0012] The control method of the above-mentioned food production line water supply and heat management system includes the following steps: Setting the required system parameters according to demand, including the liquid level and temperature ranges of the condensate storage tank, hot water storage tank, tap water storage tank, dormitory hot water tank, and cooling tower storage tank; setting the peak water usage time range; when the system is working, the condensate recovery module collects residual condensate and uses steam power to pump it to the outlet water heating module. The residual heat of the condensate and the steam are used to heat the cold tap water. The heated tap water is then delivered to the domestic water supply module. An auxiliary heating water circulation is formed between the auxiliary heating module and the domestic water supply module, providing heat to the domestic water supply module when there is no steam heating. The cooling condensate generated during the heating process is delivered to the water supply and drainage module, which provides cold tap water to the water storage and heating module.

[0013] Preferably, the residual condensate is transported to a condensate collector and then pumped by a steam pump to a condensate storage tank for storage. The residual condensate in the storage tank is then transported to a residual heat exchanger to exchange heat with cold tap water to obtain warm tap water. The warm tap water is then directly injected into a hot water storage tank or injected into a hot water storage tank through a circulating mixer, or directly heated by an instant heater and then delivered to the dormitory hot water tank. A hot water circulation is formed between the dormitory hot water tank and the building pipeline.

[0014] The following three methods can be used simultaneously or partially: tap water warm water is directly injected into the hot water storage tank; tap water warm water is injected into the hot water storage tank through a circulating mixer; and tap water warm water is directly injected into the instant heater.

[0015] When tap water is directly injected into the hot water storage tank: the corresponding control valve is opened, and the tap water is directly injected into the hot water storage tank from the inlet at the top of the tank.

[0016] When warm tap water is injected into the hot water storage tank through the circulating mixer: the water at the bottom of the hot water storage tank is pumped to the inlet of the circulating mixer. High-pressure water is used as the working flow, and low-pressure cold tap water and warm tap water are used as the jet flow. The working flow is compressed when it passes through the contraction chamber and throat chamber, and accelerated when it passes through the diffusion chamber, thereby generating negative pressure. Then, warm tap water and cold tap water are drawn in from the warm water suction pipe and cold water suction pipe, and mixed with the working flow in the diffusion chamber before being injected into the hot water storage tank.

[0017] When warm tap water is directly injected into the instant heater: the warm tap water passes through the conical pipe section and the straight pipe section of the instant heater in sequence. Steam flows from top to bottom, and the warm tap water flows from bottom to top, exchanging heat with the steam and heating the warm tap water.

[0018] The steam heating pipes inside the hot water storage tank are divided into multiple heating units. Depending on the liquid level in the hot water storage tank and the required heating rate, all or part of the steam heating pipes can be turned on.

[0019] The hot water tanks in each dormitory are connected to each other through pipes. During peak water usage times, the hot water tanks in the dormitories and the building's pipes are circulated with hot water. At the same time, when the hot water tanks in the dormitories are below the set low temperature value, auxiliary heating is activated.

[0020] When auxiliary heating is activated, the heat pump compressor converts the low-temperature, low-pressure gaseous refrigerant into a high-pressure, high-temperature gaseous refrigerant. The high-temperature, high-pressure gaseous refrigerant exchanges heat with water. The high-pressure refrigerant is cooled and condensed into a liquid at room temperature, releasing heat energy to heat the water, thus heating it into hot water. The high-pressure liquid refrigerant is depressurized through the expansion valve, and its pressure drops, returning to a temperature lower than the outside temperature. The low-temperature, low-pressure liquid refrigerant absorbs heat energy from the air through the evaporator and evaporates, changing from a liquid to a gas. The refrigerant that has absorbed heat energy becomes a low-temperature, low-pressure gas, which is then drawn into and compressed by the compressor, continuously absorbing heat from the air and releasing it in the air-source heat exchanger to produce hot water. This cycle repeats continuously, heating the water into hot water.

[0021] As described above, the water supply and heat management system and control method for the food production line provided by this invention have the following beneficial effects: The residual heat from the condensate generated during the horizontal production line processing is used to heat domestic water, significantly improving energy utilization and effectively reducing production costs; tap water is first heated to warm water by the residual heat from the condensate, and then further heated to hot water by steam, ensuring energy utilization while increasing heating speed to meet domestic water needs; water in the living area is uniformly allocated and distributed by a hot water storage tank to meet the water demand of different areas. Attached Figure Description

[0022] Figure 1A schematic diagram of a water and heat management system for a food production line.

[0023] Figure 2 A schematic diagram of the water and heat management system for a food production line.

[0024] Figure 3 This is a schematic diagram of a circulating water mixer. Detailed Implementation

[0025] The present invention will be further described below through specific embodiments.

[0026] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0027] like Figure 1 As shown, the water and heat management system for a food production line of the present invention includes a condensate recovery module, a water storage and heating module, and a domestic water supply module.

[0028] The condensate recovery module transports residual condensate to the water storage and heating module via pipelines, heating the cold tap water in the latter. Steam is then introduced into the heating module to further heat the cold tap water. The residual condensate formed after the steam cools is transported back to the condensate recovery module via pipelines. The water storage and heating module then supplies hot tap water to the domestic water supply module via pipelines. In this invention, residual condensate generated during the horizontal production line process is used to heat domestic water, significantly improving energy efficiency and effectively reducing production costs. Tap water is first heated to warm water by the residual condensate, and then further heated to hot water by steam, ensuring energy efficiency while increasing heating speed to meet domestic water needs. Water usage in the living area is centrally allocated and distributed by a hot water storage tank to meet the water demand of different areas. Each module, including the condensate storage tank, hot water storage tank, tap water storage tank, dormitory hot water tank, and cooling tower storage tank, is equipped with level and temperature sensors. The exterior of the aforementioned water outlet devices is covered with an insulation layer. The pipes between and within each module are equipped with electrically controlled valves. By setting parameters through the control system, the required liquid level and temperature can be intelligently adjusted. The heating device can be started on a timer to meet the hot water demand during peak periods and effectively reduce energy consumption. For example, taking the peak water usage period of 7-10 pm as an example, the system starts heating 1-2 hours in advance before the peak period and maintains a high liquid level and temperature, making full use of the residual heat of condensate and steam power in the factory to heat the tap water. During off-peak periods, heating is mainly done by the residual heat of condensate, supplemented by steam heating, and the liquid level does not need to be maintained at a high level.

[0029] like Figure 2As shown, the condensate recovery module includes a condensate collector, a steam trap, a steam pump, and a condensate storage tank. The inlet of the condensate collector is connected to the condensate recovery pipeline, and the outlet is connected to the inlet of the steam pump. The power interface of the steam pump is connected to the steam power pipeline, and the outlet is connected to the condensate storage tank. A steam trap is installed between the steam power pipeline and the collector. The recovered condensate enters the condensate collector, and steam powers the steam pump, pumping the condensate from the collector to the condensate storage tank for collection. The steam trap is located on the steam power pipeline of the steam pump and is used to separate the condensate in the steam power pipeline. The separated condensate enters the condensate collector. Condensate from the food production line is pumped to the condensate storage tank using the steam power pump, fully utilizing the steam power on the food production line without requiring other power sources. The steam trap automatically removes condensate and non-condensable gases such as air from the heating equipment or steam pipeline without steam leakage. Because the steam trap has the function of preventing steam and draining water, it can ensure uniform heating of the steam heating equipment, fully utilize the latent heat of steam, and prevent water hammer in the steam pipeline.

[0030] The water storage and heating module includes a waste heat heat exchanger and a hot water storage tank. The waste heat heat exchanger is equipped with connectors for inputting waste heat condensate, outputting cooling condensate, inputting cold tap water, and outputting warm tap water. The waste heat condensate input connector is connected to the outlet of the condensate storage tank via a pipe, and the warm tap water output connector is connected to the inlet of the hot water storage tank via a pipe. The hot water storage tank contains steam heating pipes for heating tap water. These steam heating pipes inside the hot water storage tank are divided into multiple heating units from top to bottom, each heating unit having a separate steam inlet and a corresponding control valve. The steam heating pipe is divided into multiple heating units. The steam inlet of the heating unit is at the top and the outlet is at the bottom. The steam heating pipe can be fully or partially opened according to the liquid level of the hot water storage tank and the required heating speed, so as to adapt to the needs of different scenarios. For example, when the set liquid level is low, only the steam heating pipe of the lower half of the heating unit can be opened to meet the heating needs. When the water usage is at its peak and the liquid level is high, all the steam heating pipes can be opened to quickly raise the temperature.

[0031] The water storage heating module also includes a circulating mixer, which contains a contraction chamber 1, a throat chamber 2, and a diffuser chamber 3 connected in sequence. The diameter of the contraction chamber 1 gradually decreases from the inlet to the throat chamber 2, while the throat chamber 2 has the same diameter. The diameter of the diffuser chamber 3 increases from the throat chamber 2 to the outlet. A warm water suction pipe 4 and a cold water suction pipe 5 are provided at the connection between the throat chamber 2 and the diffuser chamber 3. The inlet of the circulating mixer is connected to the outlet at the bottom of the hot water storage tank through a pipe, and the outlet of the circulating mixer is connected to the inlet at the top of the hot water storage tank. The connector for outputting warm tap water on the residual heat exchanger is connected to the warm water suction pipe 4 and the hot water storage tank through a pipe. The cold water suction pipe 5 is connected to tap water. The hot water storage tank has an interface for direct connection to tap water. The central axes of the warm water suction pipe 4 and the cold water suction pipe 5 form an acute angle with the central axes of the contraction chamber 1 and the throat chamber 2. Water from the bottom of the hot water storage tank is pumped to the inlet of the circulating mixer to form high-pressure water. Using this high-pressure water as the working flow and low-pressure tap water (cold and warm) as the jet, the water is compressed as it passes through the contraction chamber 1 and the throat chamber 2, and accelerated as it passes through the diffuser chamber 3, thus generating negative pressure. This draws in the tap water (warm and cold) from the warm water suction pipe 4 and the cold water suction pipe 5, and then... The circulating water in the diffuser 3 mixes with the circulating water in the storage tank, thus achieving water circulation inside the hot water storage tank while simultaneously mixing warm tap water, cold tap water, and hot water inside the hot water storage tank. This ensures uniform water temperature and rapid heating inside the hot water storage tank. When the heating speed requirement is not high, the hot water storage tank can also be directly filled with cold tap water and warm tap water without going through the circulating mixer. Each branch of the inlet of the hot water storage tank and the circulating mixer is equipped with a separate control valve.

[0032] The water storage heating module also includes an instant heater, which consists of a straight pipe section and a tapered pipe section from top to bottom. The inner diameter of the straight pipe section remains unchanged, while the inner diameter of the tapered pipe section gradually decreases from the inlet to the straight pipe section. Steam pipes surround the outside of the straight pipe section and the tapered pipe section. The water inlet at the bottom of the instant heater is connected to the outlet of the waste heat exchanger via a pipe, and the water outlet at the top of the instant heater is connected to the domestic water supply module via a pipe. The steam pipe inlet and outlet of the instant heater are located at the top and bottom, respectively. When a small amount of hot water needs to be quickly replenished to a localized area of ​​the living area, an instant heater can be used to heat a small flow of tap water. The tap water, after passing through a residual heat exchanger, flows sequentially through a conical pipe section and a straight pipe section. As the pipe diameter gradually narrows, especially when passing through the straight pipe section, the tap water comes into more direct contact with the steam pipe, causing the tap water to be quickly heated into hot water. The inlet of the instant heater is equipped with a throttle valve to control the flow rate. Steam flows from top to bottom, while the tap water flows from bottom to top, exchanging heat with the steam. The resulting hot water is then transported to the designated dormitory hot water tank to address a rapid drop in the water level of a particular dormitory hot water tank within a short period of time.

[0033] The system also includes a water supply and drainage module. This module delivers chilled tap water to the water storage and heating module via pipelines. The water storage and heating module, in turn, delivers cooling condensate to the water supply and drainage module via pipelines. The water supply and drainage module comprises a tap water storage tank, a cooling tower water storage tank, and a vacuum water tank. The outlet of the tap water storage tank is connected via pipelines to the inlet of the tap water cooling water input connector on the waste heat exchanger and the inlet of the hot water storage tank. The inlets of the cooling tower water storage tank and the vacuum water tank are connected via pipelines to the outlet of the cooling condensate on the waste heat exchanger. The outlet of the tap water storage tank is connected via pipelines to the inlet of the cooling tower water storage tank. The water supply and drainage module provides the entire system with a source of chilled tap water and collects the final cooling condensate. The collected cooling condensate can be used in industrial production, utilizing the residual heat of the condensate while improving water resource utilization and reducing production costs.

[0034] The domestic water supply module comprises multiple sets of water supply groups for residential areas. Each group includes dormitory hot water tanks and building piping. The inlet of the dormitory hot water tanks is connected to the tap water hot water pipe from the water storage and heating module. The outlets of the dormitory hot water tanks, the building piping, and the inlet of the dormitory hot water tanks are connected by pipes to form a water circulation loop. The dormitory hot water tanks in different residential areas are also connected by pipes. The dormitory hot water tanks can replenish each other's water supply, allowing for short-term hot water distribution based on occupancy rates and water consumption in different areas. A hot water circulation system is formed between the dormitory hot water tanks and the building piping. This circulation is typically activated during peak water usage periods, ensuring a continuous flow of hot water within the building piping. Therefore, it is not necessary to release a section of cold water before releasing hot water, reducing water waste.

[0035] It also includes an auxiliary heating module, which forms a tap water circulation loop with the domestic water supply module through pipelines. Within the auxiliary heating module, an evaporator, gas-liquid separator, heat pump compressor, air source heat exchanger, liquid storage tank, filter, and expansion valve sequentially constitute a refrigerant loop. The tap water outlet on the air source heat exchanger is connected to the inlet of the dormitory hot water tank, and the tap water inlet is connected to the outlet of the dormitory hot water tank. Control valves are installed on the pipelines connecting the dormitory hot water tank and the building's piping, as well as on the pipeline connecting the dormitory hot water tank and the heat exchanger's tap water inlet. When the food production line stops operating and there is no steam to provide additional heating to the hot water storage tank, and the dormitory hot water tank is below the minimum liquid level, the water storage heating module replenishes the dormitory hot water tank with warm tap water, and activates the auxiliary heating module to circulate and heat the water in the dormitory hot water tank, providing hot water during the production line shutdown period to meet living needs.

[0036] The control method for the water supply and heat management system of a food production line includes the following steps: Setting the required system parameters according to demand, including the liquid level and temperature ranges of the condensate storage tank, hot water storage tank, tap water storage tank, dormitory hot water tank, and cooling tower storage tank; setting the peak water usage time range; during system operation, the condensate recovery module collects residual condensate and uses steam power to pump it to the outlet water heating module. The residual heat of the condensate and the steam are used to heat the tap water. The heated tap water is then delivered to the domestic water supply module. An auxiliary heating water circulation is formed between the auxiliary heating module and the domestic water supply module, providing heat to the domestic water supply module when there is no steam heating. The cooling condensate generated during the heating process is delivered to the water supply and drainage module, which provides tap water to the water storage and heating module.

[0037] The residual condensate is transported to the condensate collector, and then pumped by a steam pump to the condensate storage tank for storage. The residual condensate in the storage tank is then transported to the residual heat exchanger to exchange heat with the cold tap water to obtain warm tap water. The warm tap water is then directly injected into the hot water storage tank or injected into the hot water storage tank through a circulating mixer, or directly heated by an instant heater and then delivered to the dormitory hot water tank. A hot water circulation is formed between the dormitory hot water tank and the building pipeline.

[0038] The following three methods can be used simultaneously or partially: tap water warm water is directly injected into the hot water storage tank; tap water warm water is injected into the hot water storage tank through a circulating mixer; and tap water warm water is directly injected into the instant heater.

[0039] When tap water is directly injected into the hot water storage tank: the corresponding control valve is opened, and the tap water is directly injected into the hot water storage tank from the inlet at the top of the tank.

[0040] When warm tap water is injected into the hot water storage tank through the circulating mixer: the water at the bottom of the hot water storage tank is pumped to the inlet of the circulating mixer. High-pressure water is used as the working flow, and low-pressure cold tap water and warm tap water are used as the jet flow. The working flow is compressed when it passes through the contraction chamber 1 and the throat chamber 2, and is accelerated when it passes through the diffusion chamber 3, thereby generating negative pressure. Then, warm tap water and cold tap water are drawn in from the warm water suction pipe 4 and the cold water suction pipe 5, and mixed with the working flow in the diffusion chamber 3 before being injected into the hot water storage tank.

[0041] When warm tap water is directly injected into the instant heater: the warm tap water passes through the conical pipe section and the straight pipe section of the instant heater in sequence. Steam flows from top to bottom, and the warm tap water flows from bottom to top, exchanging heat with the steam and heating the warm tap water.

[0042] The steam heating pipes inside the hot water storage tank are divided into multiple heating units. Depending on the liquid level in the hot water storage tank and the required heating rate, all or part of the steam heating pipes can be turned on.

[0043] The hot water tanks in each dormitory are connected to each other through pipes. During peak water usage times, the hot water tanks in the dormitories and the building's pipes are circulated with hot water. At the same time, when the hot water tanks in the dormitories are below the set low temperature value, auxiliary heating is activated.

[0044] When auxiliary heating is activated, the heat pump compressor converts the low-temperature, low-pressure gaseous refrigerant into a high-pressure, high-temperature gaseous refrigerant. The high-temperature, high-pressure gaseous refrigerant exchanges heat with water. The high-pressure refrigerant is cooled and condensed into a liquid at room temperature, releasing heat energy to heat the water, thus heating it into hot water. The high-pressure liquid refrigerant is depressurized through the expansion valve, and its pressure drops, returning to a temperature lower than the outside temperature. The low-temperature, low-pressure liquid refrigerant absorbs heat energy from the air through the evaporator and evaporates, changing from a liquid to a gas. The refrigerant that has absorbed heat energy becomes a low-temperature, low-pressure gas, which is then drawn into and compressed by the compressor, continuously absorbing heat from the air and releasing it in the air-source heat exchanger to produce hot water. This cycle repeats continuously, heating the water into hot water.

[0045] The above are merely some specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A water supply and heat management system for a food production line, characterized in that: It includes a condensate recovery module, a water storage and heating module, and a domestic water supply module. The condensate recovery module transports residual condensate to the water storage and heating module through a pipeline and heats the cold tap water in the water storage and heating module. Steam is introduced into the water storage and heating module to heat the cold tap water. The residual condensate formed after the steam cools down is transported back to the condensate recovery module through a pipeline. The water storage and heating module transports hot tap water to the domestic water supply module through a pipeline.

2. The water supply and heat management system for a food production line according to claim 1, characterized in that: The condensate recovery module includes a condensate collector, a steam trap, a steam pump, and a condensate storage tank. The inlet of the condensate collector is connected to a pipe for recovering condensate, and the outlet is connected to the inlet of the steam pump. The power interface of the steam pump is connected to a steam power pipe, and the outlet is connected to the condensate storage tank. A steam trap is provided between the steam power pipe and the collector.

3. The water supply and heat management system for a food production line according to claim 1, characterized in that: The water storage and heating module includes a residual heat exchanger and a hot water storage tank. The residual heat exchanger is equipped with a connector for inputting residual condensate, a connector for outputting cooling condensate, a connector for inputting cold tap water, and a connector for outputting warm tap water. The connector for inputting residual condensate is connected to the outlet of the condensate storage tank through a pipe, and the connector for outputting warm tap water is connected to the inlet of the hot water storage tank through a pipe. The hot water storage tank is equipped with a steam heating pipe for heating tap water.

4. The water supply and heat management system for a food production line according to claim 3, characterized in that: The water storage heating module also includes a circulating mixer, which has a contraction chamber, a throat chamber, and a diffusion chamber connected in sequence. The diameter of the contraction chamber gradually decreases from the inlet to the throat chamber, while the throat chamber has the same diameter. The diameter of the diffusion chamber increases from the throat chamber to the outlet. A warm water suction pipe and a cold water suction pipe are provided at the connection between the throat chamber and the diffusion chamber. The inlet of the circulating mixer is connected to the outlet at the bottom of the hot water storage tank through a pipe. The outlet of the circulating mixer is connected to the inlet at the top of the hot water storage tank. The connector on the residual heat heat exchanger that outputs warm tap water is connected to the warm water suction pipe and the hot water storage tank through a pipe. The cold water suction pipe is connected to tap water. The hot water storage tank has an interface that is directly connected to tap water.

5. The water supply and heat management system for a food production line according to claim 3, characterized in that: The water storage heating module also includes an instant heater, which consists of a straight pipe section and a tapered pipe section from top to bottom. The inner diameter of the straight pipe section remains constant, while the inner diameter of the tapered pipe section gradually decreases from the inlet to the straight pipe section. The straight pipe section and the tapered pipe section are surrounded by a steam pipe. The water inlet at the bottom of the instant heater is connected to the outlet of the waste heat exchanger via a pipe, and the water outlet at the top of the instant heater is connected to the domestic water supply module via a pipe. The steam pipe inlet and outlet of the instant heater are located at the top and bottom, respectively.

6. The water supply and heat management system for a food production line according to claim 3, characterized in that: It also includes a water supply and drainage module, which transports cold tap water to a water storage and heating module via pipelines. The water storage and heating module transports cooling condensate to the water supply and drainage module via pipelines. The water supply and drainage module includes a tap water storage tank, a cooling tower water storage tank, and a vacuum water tank. The outlet of the tap water storage tank is connected via a pipeline to the tap water inlet of the waste heat exchanger and the inlet of the hot water storage tank. The inlets of the cooling tower water storage tank and the vacuum water tank are connected via pipelines to the cooling condensate outlet of the waste heat exchanger. The outlet of the tap water storage tank is connected via a pipeline to the inlet of the cooling tower water storage tank.

7. The water supply and heat management system for a food production line according to claim 1, characterized in that: The domestic water supply module includes multiple sets of living area water supply groups. Each living area water supply group includes dormitory hot water tanks and building pipelines. The inlet of the dormitory hot water tank is connected to the tap water hot water pipe from the water storage and heating module. The outlet of the dormitory hot water tank, the building pipeline and the inlet of the dormitory hot water tank are connected by pipelines to form a water circulation loop. The dormitory hot water tanks of different living area water supply groups are connected by pipelines.

8. The water supply and heat management system for a food production line according to claim 1, characterized in that: It also includes an auxiliary heating module, which forms a tap water circulation loop with the domestic water supply module through a pipeline. In the auxiliary heating module, the evaporator, gas-liquid separator, heat pump compressor, air source heat exchanger, liquid storage tank, filter, and expansion valve sequentially form a refrigerant loop. The tap water outlet on the air source heat exchanger is connected to the inlet of the dormitory hot water tank, and the tap water inlet is connected to the outlet of the dormitory hot water tank.

9. The control method for the water supply and heat management system of a food production line according to any one of claims 1-8, characterized in that: The process includes the following steps: Setting the required system parameters according to needs, including the liquid level and temperature ranges of the condensate storage tank, hot water storage tank, tap water storage tank, dormitory hot water tank, and cooling tower storage tank; setting the peak water usage time range; during system operation, the condensate recovery module collects residual condensate and uses steam power to pump it to the outlet water heating module. The residual heat of the condensate and the steam are used to heat the tap water. The heated tap water is then delivered to the domestic water supply module. An auxiliary heating water circulation is formed between the auxiliary heating module and the domestic water supply module, providing heat to the domestic water supply module when there is no steam heating. The cooling condensate generated during the heating process is delivered to the water supply and drainage module, which provides tap water to the water storage and heating module.

10. The control method for the water supply and heat management system of a food production line according to claim 9, characterized in that: The residual condensate is transported to the condensate collector, and then pumped by a steam pump to the condensate storage tank for storage. The residual condensate in the storage tank is then transported to the residual heat exchanger to exchange heat with the cold tap water to obtain warm tap water. The warm tap water is then directly injected into the hot water storage tank or injected into the hot water storage tank through a circulating mixer, or directly heated by an instant heater and then delivered to the dormitory hot water tank. A hot water circulation is formed between the dormitory hot water tank and the building pipeline. The following three methods can be used simultaneously or partially: tap water warm water is directly injected into the hot water storage tank; tap water warm water is injected into the hot water storage tank through a circulating mixer; and tap water warm water is directly injected into the instant heater. When tap water is directly injected into the hot water storage tank: the corresponding control valve is opened, and the tap water is directly injected into the hot water storage tank from the inlet at the top of the tank. When warm tap water is injected into the hot water storage tank through the circulating mixer: the water at the bottom of the hot water storage tank is pumped to the inlet of the circulating mixer. High-pressure water is used as the working flow, and low-pressure cold tap water and warm tap water are used as the jet flow. The working flow is compressed when it passes through the contraction chamber and throat chamber, and accelerated when it passes through the diffusion chamber, thereby generating negative pressure. Then, warm tap water and cold tap water are drawn in from the warm water suction pipe and cold water suction pipe, and mixed with the working flow in the diffusion chamber before being injected into the hot water storage tank. When warm tap water is directly injected into the instant heater: the warm tap water passes through the conical pipe section and the straight pipe section of the instant heater in sequence. Steam flows from top to bottom, and the warm tap water flows from bottom to top, exchanging heat with the steam and heating the warm tap water. The steam heating pipes inside the hot water storage tank are divided into multiple heating units. Depending on the liquid level in the hot water storage tank and the required heating rate, all or part of the steam heating pipes can be turned on. The hot water tanks in each dormitory are connected to each other through pipes. During peak water usage times, the hot water tanks in the dormitories and the building's pipes are circulated with hot water. At the same time, when the hot water tanks in the dormitories are below the set low temperature value, auxiliary heating is activated. When auxiliary heating is activated, the heat pump compressor converts the low-temperature, low-pressure gaseous refrigerant into a high-pressure, high-temperature gaseous refrigerant. The high-temperature, high-pressure gaseous refrigerant exchanges heat with water. The high-pressure refrigerant is cooled and condensed into a liquid at room temperature, releasing heat energy to heat the water, thus heating it into hot water. The high-pressure liquid refrigerant is depressurized through the expansion valve, and its pressure drops, returning to a temperature lower than the outside temperature. The low-temperature, low-pressure liquid refrigerant absorbs heat energy from the air through the evaporator and evaporates, changing from a liquid to a gas. The refrigerant that has absorbed heat energy becomes a low-temperature, low-pressure gas, which is then drawn into and compressed by the compressor, continuously absorbing heat from the air and releasing it in the air-source heat exchanger to produce hot water. This cycle repeats continuously, heating the water into hot water.

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