CN211650455U

CN211650455U - Hot water supply system

Info

Publication number: CN211650455U
Application number: CN202020166247.1U
Authority: CN
Inventors: 高亚民; 程世哲; 王丽梅; 杨帅; 李艳娇
Original assignee: Shenyang Hong Cheng Shiji Refrigeration Equipment Co ltd
Current assignee: Shenyang Hong Cheng Shiji Refrigeration Equipment Co ltd
Priority date: 2020-02-13
Filing date: 2020-02-13
Publication date: 2020-10-09
Anticipated expiration: 2030-02-13

Abstract

The utility model provides a hot water supply system, belongs to clean energy saving technical field, the system includes special hot water unit of tableware disinfection production line, sewage waste heat recovery system, straight hot water supply system, indoor air waste heat recovery system, constant temperature is with circulation hot water system, tableware cleaning and disinfecting production line, special hot water unit of tableware disinfection production line includes straight hot refrigerant system and constant temperature is with circulation hot water refrigerant system. The system is a hot water device capable of producing set temperature, the hot water is supplied to a tableware cleaning and disinfecting factory to be used on a cleaning and disinfecting production line, the requirements of the tableware cleaning and disinfecting factory on two indexes of using the hot water at constant temperature and the quantity of the hot water are met, and a steam boiler used by the tableware cleaning and disinfecting factory at present is replaced.

Description

Hot water supply system

Technical Field

The utility model belongs to the technical field of clean energy is energy-conserving, concretely relates to hot water supply system, the special tableware cleaning and disinfecting of supplying uses.

Background

The requirements for cleaning and disinfecting tableware used in public places are already included in the scope of laws, and the thirty third food production and operation of the food safety law of the people's republic of China shall meet the food safety standard and the following requirements of the fifth regulation that tableware, drinking utensils and containers for containing direct-access food shall be cleaned and disinfected before use, …. Therefore, public tableware, containers and utensils are sterilized in strict accordance with the decontamination procedure in compliance with the national operating regulations and sanitary requirements before use. The flow of the cleaning and disinfecting production line of the tableware cleaning and disinfecting factory roughly comprises the following steps: the first step of removing residues by hot water: washing off food residue on the tableware with hot water (preferably 50-60 deg.C); second step hot water degreasing: cleaning with hot water to remove residual oil and fat on the tableware (preferably water temperature is above 30 deg.C); the third step is soaking pool (adding disinfectant for disinfection): the tableware is disinfected, and residual pathogenic microorganisms (pathogenic bacteria, viruses and the like) on the tableware can be killed by adopting a physical method or a chemical method; and fourthly, hot water flushing: washing the tableware, namely washing away residual medicines on the tableware by clean and sanitary clean water; the fifth step of high temperature pool (hot water soaking): the tableware is cleaned again by high-temperature water, soaked and thoroughly cleaned. Therefore, the function of water used in the production process of the tableware cleaning and disinfecting factory and the temperature (50-60 ℃ and 30 ℃) of the water are specified.

At present, the heat source for producing hot water in a tableware cleaning and disinfecting factory is still a boiler, and hot steam produced by the boiler is introduced into softened water in a water tank heat preservation and heating water tank of a tableware cleaning and disinfecting production line. Flue gas emitted from coal-fired boilers is an important source of atmospheric pollution and has been banned from use. Currently, biomass boilers, which use biomass (block-shaped substances produced by processing straws, rice hulls, peanut shells, corn cobs, oil tea shells, cottonseed hulls, and the like, and "three residues" and the like) as fuel, are mostly used. However, the biomass combustion efficiency is about 80%, and the energy utilization rate is relatively low. The steam produced by the boiler is introduced into a water tank of the cleaning and disinfecting tableware to be used as a heat source for heating and heat preservation, the energy level is higher, the energy is wasted, and the high-temperature steam is easy to scald if leaked; the biomass boiler fuel is combusted to generate slag, special filling and ash removal are needed on site, the use process is complex, and manpower is consumed; meanwhile, smoke is discharged from a chimney, so that the environment is seriously polluted; more serious, the production place of the boiler has the stove with open fire, which is very unsafe. Therefore, biomass boilers would also be an energy source that is gradually banned and phased out.

The production line of the tableware cleaning and disinfecting plant always overflows hot sewage to be discharged to a trench in the process of cleaning tableware, the production line comprehensively cleans a large amount of hot sewage discharged in the process of changing water, and the high-temperature sewage is discharged to seriously waste energy. The waste heat of the discharged hot sewage is heated by the sewage heat exchanger and is provided as a low-temperature heat source to the direct-heating water supply system of the device to convert the waste heat into a high-grade heat source; meanwhile, a production line can generate a large amount of hot and humid steam in the cleaning and disinfecting process, the hot and humid steam is dispersed into the environment, and workers who wash dishes feel uncomfortable, and the heat of the hot and humid steam is extracted by the waste heat of the hot and humid steam through the water heating air conditioner and is provided as a low-temperature heat source to the circulating water system of the device of the utility model to convert the hot and humid steam into a high-grade heat source; meanwhile, the ambient temperature is reduced, and the working environment of the staff is improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a hot water supply system, this system can set for the hot water device of temperature for the production, and this hot water supplies tableware cleaning and disinfecting factory and uses on the cleaning and disinfecting production line, satisfies its demand to using two indexs of hot water constant temperature and hot water yield, replaces the steam boiler that tableware cleaning and disinfecting factory used at present.

The utility model adopts the following technical scheme:

the utility model provides a hot water supply system, the system includes special hot water unit of tableware disinfection production line, sewage waste heat recovery system, straight hot water supply system, indoor air waste heat recovery system, constant temperature is with circulation hot water system, tableware cleaning and disinfecting production line, special hot water unit of tableware disinfection production line includes straight hot refrigerant system and constant temperature is with circulation hot water refrigerant system, straight hot refrigerant system includes: a first refrigeration compressor, a first condenser, a first heat recoverer, a first throttle valve and a first evaporator, the sewage waste heat recovery system comprises a sewage tank and a sewage heat exchanger, wherein the sewage tank is internally provided with the sewage heat exchanger, the sewage heat exchanger is connected with the first evaporator to form a first secondary refrigerant loop, a refrigerant outlet of the first evaporator is connected with the first heat recoverer, the gas outlet of the first heat recoverer is connected with a first refrigeration compressor, the first refrigeration compressor is connected with a refrigerant pipeline of a first condenser, the high-temperature water outlet in the first condenser is connected with a direct-heating water tank, the direct-heating water tank is connected with a tableware cleaning and disinfecting production line, the sewage outlet of the tableware cleaning and disinfecting production line is connected with the sewage pool, the refrigerant liquid outlet of the first heat recoverer is connected with a first throttling valve, and the first throttling valve is connected with a first evaporator; the circulating hot water refrigerant system for constant temperature in the special hot water unit for the tableware disinfection production line comprises a second refrigeration compressor, a second condenser, a second heat recoverer, a second throttle valve and a second evaporator, wherein the second evaporator and a water heating air conditioner form a second secondary refrigerant circulating loop, a refrigerant outlet of the second evaporator is connected with the second heat recoverer, a gas outlet of the second heat recoverer is connected with the second refrigeration compressor, the second refrigeration compressor is connected with a refrigerant pipeline of the second condenser, a high-temperature water outlet in the second condenser is connected with a circulating hot water tank, a high-temperature water outlet of the circulating hot water tank is connected with a constant-temperature heat exchanger and a high-temperature side high-temperature water inlet of a plate heat exchanger, a high-temperature side low-temperature water outlet of the constant-temperature heat exchanger and a high-temperature side low-temperature water outlet of the plate heat exchanger are connected with the circulating hot water tank, and a water low-temperature side outlet of water, the constant temperature heat exchanger and the plate heat exchanger are connected with a low temperature water outlet of water for a tableware cleaning and disinfecting production line, a refrigerant outlet of the second condenser is connected with a refrigerant liquid port of the second heat recoverer, the refrigerant liquid outlet of the second heat recoverer is connected with the second throttle valve, the second throttle valve is connected with the second evaporator, and a cold side outlet of the circulating hot water tank is connected with a low temperature water inlet of the second condenser.

Furthermore, the direct-heating hot water tank is connected with the tableware cleaning and disinfecting production line to form a loop, and a hot-side water supply pump is arranged on the loop.

Furthermore, a cold side outlet of the circulating hot water tank is connected with a low-temperature water inlet of the first condenser to form a loop, and a second hot side circulating pump is arranged on the loop.

Furthermore, the constant temperature heat exchanger is a square shell-and-tube heat exchanger, the inside of the constant temperature heat exchanger is a stainless steel spiral tube, the top surface of the shell of the constant temperature heat exchanger is provided with a detachable cleaning port, and the bottom of the shell is provided with a sewage draining port.

Furthermore, the hot sides of the constant temperature heat exchanger and the plate heat exchanger are connected with a hot side outlet of the circulating hot water tank to form a loop, and a first hot side circulating pump is arranged on the loop, and the cold sides of the constant temperature heat exchanger and the plate heat exchanger are connected with a tableware cleaning and disinfecting production line to form a loop, and a third cold side circulating pump is arranged on the loop.

Furthermore, the sewage heat exchanger is connected with the first evaporator to form a loop, and a second cold-side circulating pump is arranged on the loop.

Furthermore, a first drying filter, a first electromagnetic valve, a first liquid sight glass and a first throttle valve are arranged on a refrigerant outlet of the first heat recovery device and a connecting pipeline which is sequentially connected with the first evaporator.

Furthermore, a first cold-side circulating pump is arranged on a second refrigerating medium circulating loop formed by the water heating air conditioner and the second evaporator.

Furthermore, the water heating air conditioner is arranged beside the tableware cleaning and disinfecting production line.

Furthermore, a second drying filter, a second electromagnetic valve, a second liquid sight glass, a second throttle valve and a second evaporator are arranged on a pipeline connecting the second heat recoverer and the second evaporator.

The utility model adopts the waste heat recovery device to collect a large amount of hot sewage discharged by the production line of the tableware cleaning and disinfecting plant when the production line per se overflows and the water consumption of the production line is changed or the wet and hot steam (or well water) emitted by the hot water of the production line of the tableware cleaning and disinfecting plant is taken as the low-temperature heat source, the low-temperature low-pressure refrigerant in the heating system is evaporated in the evaporator by extracting the heat of the low-temperature heat source (the low-temperature water produced by refrigeration) from the low-temperature side of the hot water unit of the utility model, the high-temperature high-pressure refrigerant gas is discharged to the high-temperature side condenser of the hot water unit according to the thermodynamic reverse Carnot cycle principle, the normal temperature tap water is taken as the cooling water to enter the condenser to exchange heat with the high-temperature refrigerant gas, the refrigerant gas releases heat and condenses into liquid, the tap water absorbs the heat and heats up, namely, therefore, the high-efficiency utilization of energy is realized by the conversion of the low-temperature heat source and the compressor power, and the process of converting the low-grade heat source and the electric power compensated by the operation of the special hot water unit 1 for the tableware cleaning and disinfecting production line into the high-grade heat source is realized.

The heat of the hot water used on the production line for cleaning and disinfecting the tableware by using the boiler is lost, so that the water temperature is reduced, and a large amount of hot steam needs to be supplemented to keep the constant temperature; the device can continuously provide circulating hot water as a heat source, and realizes water-water heat exchange with the water used in the tableware cleaning and disinfecting production line through a function, namely a circulating water system, so as to keep the constant temperature of 55 ℃ of the water used in the tableware cleaning and disinfecting production line; in addition, the tableware cleaning and disinfecting production process has the steps that the used sewage in the cleaning tank is discharged once every day (every week), then clean 55 ℃ water is quantitatively supplemented once, and the clean 55 ℃ water is supplemented constantly in the production process to balance the lost water quantity; the design of the direct-heating hot water system with another function of the device can completely provide 55 ℃ cleaning water according to the demand direct production, and the cleaning water is supplied to the production line of the tableware cleaning and disinfecting.

The utility model realizes automatic control and saves human resources; the condenser adopts a coaxial double-pipe heat exchanger and a plate heat exchanger, and hot water can be quickly heated; meanwhile, the design of the system is different from the traditional heat pump technology, a unique heat recoverer is adopted to supercool the condensed refrigerant liquid, the supercooling degree is improved, the refrigerating capacity is increased, meanwhile, the refrigerant return gas evaporated by the evaporator is overheated, the suction superheat degree is improved, the large heating capacity is realized, and high-temperature hot water or large-flow hot water can be produced. The utility model discloses the constant temperature heat exchanger who uses in the system that provides homothermal for tableware cleaning and disinfecting production line is the stainless steel spiral shell and tube type heat exchanger of the independent innovation of the special design of tableware disinfecting production line and production of my company, and not only the high cleaning operation of being convenient for of heat exchange efficiency.

The utility model is characterized in that the device is different from the prior water heater set, and scientifically adopts a set of equipment with two functions to drive a double hot water system (a direct hot water system and a circulating hot water system) so as to complete a high-efficiency conversion device which can realize two requirements simultaneously; compared with steam produced by a boiler, the energy consumption is less, and the energy is more saved; the problems of complicated process of burning fuel for producing hot water by a biomass boiler, daily purchase and storage of the fuel and the like are avoided, particularly the process of cleaning slag ash is avoided, and the possibility of potential safety hazard caused by open fire in a production field is also avoided; meanwhile, the big problem of environmental pollution and energy waste caused by smoke discharge of a chimney is avoided. The utility model relates to a novel energy-saving and environment-friendly water heating device for cleaning and disinfecting tableware, which is used for replacing a biomass boiler.

The to-be-solved technical problem of the utility model

The utility model discloses the device is multi-functional, energy-concerving and environment-protective device of high efficiency. The technical problem to be solved by the utility model is to ensure the normal operation of the refrigerant system of the heating cycle by using the heat source (hot sewage, waste steam or well water) with low grade provided on site; secondly, two sets of hot water production systems need to be configured: one function is to prepare circulating hot water as a heat source to supplement the heat lost by the used water of the tableware cleaning and disinfecting production line and keep the constant temperature of 55 ℃; the other function needs to design and produce hot water for cleaning and disinfection, namely direct-heating hot water, and the demand of cleaning water replacement at 55 ℃ in the production line is met. Additionally the utility model discloses the heat exchanger that the device used needs the high-efficient heat exchanger and the corrosion resisting property of strenghthened type: 1. the condensation temperature of the condenser on the high-temperature side of the hot water unit is high, and new water continuously flows through the condenser, namely, the probability of producing corrosive substances is high, 2. if the evaporator uses well water, the corrosion resistance of the evaporator is needed, 3. when the water used on the production line of the clean and sterile tableware carries out heat exchange, circulating water may bring heat-resistant substances such as food residues, oil stains and the like into the constant-temperature heat exchanger, and the design requirement scheme can realize the convenience of cleaning operation and maintenance of the heat exchanger.

The utility model discloses the design is the independent heating system of two parts, the direct hot water supply system scheme of first function, the utility model discloses production hot water direct supply cleaning and disinfecting tableware production line supplements hot water often and uses and the disposable a large amount of water of cleaning production line uses. The utility model discloses the heat source of its low temperature side of the hot water unit of production straight hot-water heating system is that the sewage or the well water of retrieving the emission are stored in the effluent water sump as its low temperature heat source, and the low temperature secondary refrigerant heat transfer in sewage and the sewage heat exchanger in the effluent water sump absorbs the heat of sewage back high temperature secondary refrigerant and carries the heat through pump circulation the utility model discloses low temperature side and the interior low pressure refrigerant liquid of evaporimeter carry out heat exchange, and refrigerant liquid evaporates into gaseous entering compressor after absorbing the secondary refrigerant heat, and high temperature secondary refrigerant becomes low temperature secondary refrigerant, accomplishes the conversion of low temperature side energy. The low-temperature secondary refrigerant after giving out heat gets back to the heat of the sewage discharged by the absorption production line in the sewage pool again and is heated up, and then is carried by the pump circulation to the low-temperature side of the utility model and the low-temperature low-pressure refrigerant liquid in the evaporator for heat exchange, and the mode is in a reciprocating circulation mode in turn. The technical scheme is that the heat at the low temperature side is subjected to heat exchange by a sewage heat exchanger through a refrigerant and low-temperature and low-pressure refrigerant liquid, the low-temperature refrigerant liquid absorbs the heat and is converted into low-temperature refrigerant gas to be carried into a refrigeration compressor, and the refrigeration compressor compresses the low-temperature and high-pressure refrigerant gas into a condenser, namely the high-temperature side. Tap water is used as a cooling medium and is introduced into the condenser to exchange heat with high-temperature and high-pressure refrigerant gas in the condenser, on one hand, the high-temperature and high-pressure refrigerant gas is cooled to release heat and is converted into refrigerant liquid to be discharged through the throttling device and enter the evaporator after being depressurized; on the other hand, tap water absorbs high-temperature condensation heat and then is heated to 55 ℃, and heated hot water, namely direct-heating hot water, enters a direct-heating hot water tank for storage and standby. The high-pressure refrigerant liquid is depressurized by a throttling device and enters a low-temperature side evaporator, the whole cycle starts to enter a high-temperature side from the low-temperature side, namely, the discharged sewage continuously provides a heat source for the low-temperature side to enable the high-temperature side to continuously generate condensation heat, and the high-temperature heat is absorbed by tap water to produce directly-heated hot water; the direct heating system ensures the water consumption of the direct heating water tank, and is directly supplied to the production line of cleaning and disinfecting tableware to supplement hot water for use and the cleaning production line to use a large amount of water at one time.

The utility model discloses second function circulating water heating system provides homothermal heat source for tableware cleaning and disinfecting production line. The technical proposal is that hot water produced by a hot water unit of the circulating hot water system of the utility model is stored in a circulating hot water tank to keep the heat and water quantity of the circulating hot water tank; secondly, a constant temperature heat exchanger is matched with the side of the tableware cleaning and disinfecting production line, hot water in a hot side circulating hot water tank and used water in a cold side cleaning and disinfecting tableware production line are respectively pumped into the constant temperature heat exchanger from the same process, the heat of the circulating hot water is absorbed in the constant temperature heat exchanger by adopting a water-water heat exchange mode and designing the temperature difference of 5 ℃, the used water of the production line for cleaning and disinfecting tableware is heated, and then the used water is pumped back to the production line to supplement the heat of the water diffused to the air in the cleaning and disinfecting operation process, so that the constant temperature of the used water on the production line is kept. The utility model discloses a heat source of its low temperature side of circulation hot water system's hot water unit is through the surplus heat as the low temperature heat source of the humid hot steam of high temperature that washing and disinfecting production line hot water distributes in the air of water heating air conditioner recovery, carries out heat exchange with the secondary refrigerant low-temperature water among the water heating air conditioner, and the humid hot air of high temperature releases heat and cooling, and the high temperature secondary refrigerant that low temperature water secondary refrigerant absorbed heat and heaied up is returned by the pump the utility model discloses a low temperature low pressure refrigerant liquid carries out heat exchange in circulation hot water system's hot water unit low temperature side and the evaporimeter, and refrigerant liquid evaporates into refrigerant gas after absorbing its heat and gets into compressor, and high temperature secondary refrigerant emits the heat and becomes low temperature water secondary refrigerant, accomplishes the conversion of low temperature side energy. The low temperature water secondary refrigerant after releasing the heat is sent back to the water heating air conditioner again and is absorbed the waste heat that discharges the damp and hot air above the cleaning and disinfecting tableware production line and cool it (make operator's workspace more nice and cool), becomes high temperature secondary refrigerant after low temperature water secondary refrigerant self absorbs the heat and heaies up, is carried the heat by pump cycle again the utility model discloses the low temperature side carries out heat exchange with low temperature low pressure refrigerant liquid in the evaporimeter, mode reciprocating cycle in proper order. Production circulation hot water is by the utility model discloses a hot water unit high temperature side of circulation hot water system is accomplished, and the technical scheme of adoption is that the heat of low temperature side is carried out heat exchange through water secondary refrigerant and low temperature low pressure refrigerant liquid by the damp and hot air waste heat that the water-heating air conditioner will give off on cleaning and disinfecting production line, and low temperature refrigerant liquid absorbs the heat and turns into low temperature refrigerant gas and brings into refrigeration compressor, and refrigeration compressor discharges into condenser that the high temperature is the high temperature side with it to compress into high temperature high pressure refrigerant gas. Properly supplementing tap water at the water outlet of the circulating hot water tank, mixing the tap water with low-temperature circulating water from the bottom layer of the circulating hot water tank, introducing the mixture serving as a cooling medium into a condenser, and performing heat exchange with high-temperature and high-pressure refrigerant gas in the condenser, wherein on one hand, the high-temperature and high-pressure refrigerant gas is cooled to release heat and is converted into refrigerant liquid to be discharged through a throttling device and enter an evaporator after being depressurized; on the other hand, the low-temperature circulating water absorbs the high-temperature condensation heat and then is heated to 55 ℃, and the heated high-temperature circulating hot water flows out of the condenser and then returns to the circulating hot water tank for storage and standby. High-pressure refrigerant liquid is discharged from the condenser and enters the low-temperature side evaporator through the throttling device in a pressure reduction manner, the whole cycle starts to enter the high-temperature side from the low-temperature side, namely, moist heat steam in the air continuously provides a heat source for the low-temperature side to enable the high-temperature side to continuously generate condensation heat, and the high-temperature heat is absorbed by circulating water to produce circulating hot water; the circulation is reciprocal like this, in the circulation hot-water tank constantly by the utility model discloses 55 ℃ hot water of production comes in, is constantly pumped out to constant temperature heat exchanger and provides 55 ℃ water as the hot side heat source from the circulation hot-water tank again, another cold side circulation water route is the use water of the production line of cleaning and disinfecting tableware, carry out water-water heat transfer in constant temperature heat exchanger, cold side production line circulating water absorbs the hot water heat of hot side circulation water tank and carries out the temperature and pump back to the production line as supplementing the heat source, the supplementary production line uses the heat that the water distributes in the air in the cleaning and disinfecting operation process, the circulation is reciprocal like this to keep the constant temperature of the use water on the production line.

The utility model discloses the device replaces the boiler, and the hot water of production is used for tableware cleaning and disinfecting production line to use. The utility model discloses the device only uses the electric energy, does not produce flue gas and lime-ash, has characteristics such as clean, pollution-free, safety, automatic control easy operation. Meanwhile, the unique heat pump water heater technology remarkably improves the energy conversion efficiency. Thus, the utility model discloses the device replaces the boiler to produce hot water, effectively solves all problems that use traditional boiler to bring, still practices thrift the running cost. The tableware cleaning and disinfecting factory is continuously rising, the logistics industry and the restaurant food and drink industry are driven to synchronously develop, and the tableware cleaning and disinfecting factory purchases an automatic tableware cleaning machine assembly line; the tableware distribution logistics center regularly goes to places such as restaurants, restaurants and hotels to collect tableware to be cleaned and send the tableware to each tableware cleaning and disinfecting factory, the tableware cleaning and disinfecting factory performs cleaning and disinfecting treatment, and the tableware distribution center conveys the cleaned and disinfected tableware to each place for use according to the requirements of the restaurants, the restaurants and the hotels. Along with the improvement of living standard of people, more and more people are eating in restaurants, restaurants and hotels, and more public places use the cleaning and disinfecting tableware. With the improvement of hot water energy, the whole chain is increasingly commercialized and industrialized, has wide application prospect, ensures high-quality life and health of people, and brings better economic benefit and development for the society.

The utility model has the advantages and effects that:

1. clean energy: the utility model discloses replace boiler production hot water, accord with the requirement of the energy saving and emission reduction's novel environmental protection product that the country advocated, be clean type energy.

2. Comprehensive utilization of energy sources: on one hand, sewage overflowing and discharged on the cleaning and disinfecting production line is recovered to extract low-grade energy to produce hot water, on the other hand, waste heat emitted by damp and hot air above the cleaning and disinfecting production line is recovered to extract low-grade energy to produce hot water, and meanwhile, the low-temperature working environment of operators on the production line is obtained. The waste energy is effectively recycled, the water source heat pump is replaced by a common water source heat pump, the underground water is used as a low-grade heat source, the underground water resource and energy are saved, and waste of the waste heat energy is reduced.

3. Energy efficiency ratio is high: the utility model discloses utilize the low-grade energy of 8/10 proportion, consume the electric power of 2/10 proportion, turn into the high-grade energy of 10/10 proportion, belong to energy-efficient type clean energy. Has thermal conversion efficiency performance which can not exceed that of other gas boilers and electric boilers.

4. The hot water production efficiency is high: the utility model discloses a product that the innovation of my company's independent research and development was made is multi-functional high-efficient small-size device, and two functions are realized to supporting two sets of independent heating systems in one set of utility model device, and the direct heating machine provides the hot water for cleaning and disinfecting tableware production water line promptly, and the circulator provides the constant temperature heat source for its hot water simultaneously. The hot water can reach 55 ℃ after once heat exchange from the low temperature of 10-12 ℃ of tap water or well water, and the working efficiency of the hot water is 15-20% higher than that of a common heat pump water heater.

5. The constant temperature heat exchanger is innovative and practical: the utility model combines the characteristics of users, is specially designed for users and is produced by the independent research and development of our company, adopts the stainless steel spiral heat exchange tube inside, and has high heat exchange efficiency; the detachable shell design is convenient for degreasing and cleaning the spiral heat exchange tube made of stainless steel in the shell, and the heat exchange performance is improved.

6. The special machine set for cleaning and disinfecting tableware has unique and novel structure and functions: the main machine of the special unit structure for cleaning and disinfecting the tableware of the water heater adopts the vortex type refrigeration compressor of the most advanced manufacturing technology in the world, the core part in the compressor is a double vortex disk to realize continuous exhaust and have no residual gap volume, and the volume efficiency is high; meanwhile, the vortex plate has small operation vibration and low operation noise; the compressor has few internal moving parts, high reliability and low failure rate; the vertical scroll compressor has a compact structure and small floor area; the motor has small power and less power consumption, and is more energy-saving; the evaporator adopts a detachable high-efficiency square shell with national patent products as a heat exchanger, has strong anti-dirt and anti-blocking capacity, is easy to disassemble and assemble and is convenient to clean; the heat exchange material is titanium alloy, so that the corrosion resistance is high; particularly for use in water supply systems. One of the functions is that the condenser of the direct-heating water heater adopts a sleeve-type heat exchanger to produce hot water, and the other function is that the condenser of the circulating water heater adopts a plate-type heat exchanger to produce hot water, so that the unique structure can realize the efficient heat exchange of a refrigerant and condensed water, the temperature of the inlet water of the high-temperature side is rapidly raised, and the outlet water reaches the design temperature.

7. The automatic control and maintenance are simple: the utility model discloses a microcomputer controller control and various protect function components and parts have functions such as automatic control and trouble self diagnosis, warning, automatic protection. The control display instrument can display the operation parameters and alarm parameters of the unit and can set some control parameters of the unit on site. Compared with the prior boiler system, the process is reasonable and safe, professional staff is not needed to take care of the operation of the equipment, and the maximum convenience and economy are provided for the design, installation, operation and maintenance of users.

8. Economical and practical: the utility model discloses the cost is low, has saved equipment initial investment, and waste heat recovery practices thrift the electric energy more than 80%, and especially the production line is gone up and is adopted the water heating air conditioner and has realized air waste heat recovery and use and free air conditioner dual function, has reduced whole working costs.

Drawings

FIG. 1 is a schematic diagram of the system of the present invention in the production line of the tableware cleaning and sterilizing plant.

The components in the figure: 1. a special hot water unit for a tableware cleaning and disinfecting production line; 2. a first cold-side circulation pump; 3. a first hot-side circulating water pump; 4. a second hot side circulation pump; 5. a circulating hot water tank; 6. a direct-heating water tank; 7. a second cold-side circulation pump; 8. a constant temperature heat exchanger; 9. a plate heat exchanger; 10. a first refrigeration compressor; 11. a first condenser; 12. a first heat recovery unit; 13. a first dry filter; 14. a first solenoid valve; 15. a first liquid sight glass; 16. a first evaporator; 17. a first throttle valve; 18. a second refrigeration compressor; 19. a second condenser; 20. a second heat recovery device; 21. a second dry filter; 22. a second solenoid valve; 23. a second liquid sight glass; 24. a second throttle valve; 25. a second evaporator; 26. a hot side water supply pump; 27. a sewage tank; 28. a sewage heat exchanger; 29. a water-heating air conditioner; 30. a tap water tank; 31. a third cold-side circulating water pump; 32 dish washing and disinfecting production line.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

A hot water supply system comprises a direct-heating refrigeration system, a high-temperature side direct-heating water system and a sewage waste heat recovery system of a special hot water unit for a tableware disinfection production line, wherein the special hot water unit for the tableware disinfection production line comprises a first refrigeration compressor, a first condenser, a first heat recoverer, a first throttling valve and a first evaporator, a sewage heat exchanger is arranged in a sewage pool, the sewage heat exchanger is connected with the first evaporator to form a first secondary refrigerant loop, a refrigerant outlet of the first evaporator is connected with the first heat recoverer, a gas outlet of the first heat recoverer is connected with the first refrigeration compressor, the first refrigeration compressor is connected with a refrigerant pipeline of the first condenser, a high-temperature water outlet of the first condenser is connected with a direct-heating water tank at 55 ℃, a refrigerant outlet of the first condenser is connected with the first heat recoverer, a liquid outlet of the first heat recoverer is connected with the first throttling valve, and the outlet of the first throttling valve is connected with the first evaporator.

Furthermore, a hot water outlet of the direct-heating hot water tank is connected with a hot water inlet of a tableware cleaning and disinfecting production line at 55 ℃, and a sewage discharge port of the tableware cleaning and disinfecting production line is connected with a sewage pool.

Further, the system also comprises a circulating refrigeration system of the special hot water unit for the tableware disinfection production line, a high-temperature side circulating hot water system and an indoor air waste heat recovery system, the circulating refrigeration system of the special hot water unit for the tableware disinfection production line also comprises a second refrigeration compressor, a second condenser, a second heat recoverer, a second throttle valve and a second evaporator, the water heating air conditioner and the second evaporator form a second secondary refrigerant circulating loop, the outlet of refrigerant of the second evaporator is connected with the second heat recoverer, the gas outlet of the second heat recoverer is connected with the second refrigeration compressor, the exhaust port of the second refrigeration compressor is connected with a refrigerant pipeline of the second condenser, the high-temperature water outlet of the second condenser is connected with the hot side of the circulating hot water tank at 55 ℃, the refrigerant outlet of the second condenser is connected with the second heat recoverer, and the liquid outlet of the second heat recoverer is connected with a second throttling valve, and the second throttling valve is connected with a second evaporator.

Furthermore, a hot side outlet of the circulating hot water tank is connected with the constant temperature heat exchanger and the plate heat exchanger at 55 ℃, and a hot side low-temperature water outlet of the constant temperature heat exchanger and the plate heat exchanger is connected with a low-temperature side water inlet of the circulating hot water tank through the first hot side circulating pump.

Furthermore, a cold side high-temperature water outlet of the constant temperature heat exchanger and the plate heat exchanger is connected with a tableware cleaning and disinfecting production line, and a low-temperature use water outlet of the tableware cleaning and disinfecting production line is connected with the constant temperature heat exchanger and the plate heat exchanger through a third cold side circulating pump.

Furthermore, a first cold-side circulating pump is arranged on a secondary refrigerant circulating loop formed by the water heating air conditioner and the second evaporator.

Example 1

A hot water supply system belongs to the technical field of clean energy conservation, a sewage heat exchanger is connected with a first evaporator to form a first secondary refrigerant loop, a refrigerant outlet of the first evaporator is connected with a first heat recoverer, a gas outlet of the first heat recoverer is connected with a first refrigeration compressor, an exhaust port of the first refrigeration compressor is connected with a refrigerant pipeline of a first condenser, a refrigerant outlet of the first condenser is connected with a first heat recoverer, a liquid outlet of the first heat recoverer is connected with a first throttle valve, an outlet of the first throttle valve is connected with the refrigerant pipeline of the first evaporator, a high-temperature water outlet of the first condenser is connected with a direct-heating water tank, the direct-heating water tank is connected with a water inlet of using water at the high-temperature side of a tableware cleaning and disinfecting production line, a sewage discharge port of the tableware cleaning and disinfecting production line is connected with a sewage pool, and the device produces direct-heating hot, the hot water meets the requirements of the tableware cleaning and disinfecting production line for replacing new water by sewage discharge and supplementing lost water to the production line after producing for one day or one week; the indoor air waste heat recoverer is connected with a second evaporator to form a second secondary refrigerant loop, a refrigerant outlet of the second evaporator is connected with a second heat recoverer, a gas outlet of the second heat recoverer is connected with a second refrigeration compressor, an exhaust port of the second refrigeration compressor is connected with a refrigerant pipeline of a second condenser, a refrigerant outlet of the second condenser is connected with the second heat recoverer, a liquid outlet of the second heat recoverer is connected with a second throttle valve, an outlet of the second throttle valve is connected with the refrigerant pipeline of the second evaporator, a high-temperature water outlet of the water pipeline in the second condenser is connected with a circulating hot water tank, a hot side outlet of the circulating hot water tank is connected with a constant-temperature heat exchanger and a plate-type heat exchanger, hot side outlets of the constant-temperature heat exchanger and the plate-type heat exchanger are connected with the circulating hot water tank, and a cold side outlet of, the second device produces circulating hot water as a heat source, and the heat source circularly heats the used water at the low-temperature side of the tableware cleaning and disinfecting production line to keep the used water at the constant temperature; the hot water system constructed by the two sets of devices replaces the steam boiler currently used in a tableware cleaning and disinfecting factory.

A sewage heat exchanger 28 is arranged in the sewage pool 27, a secondary refrigerant outlet of the sewage heat exchanger 28 is connected with the first evaporator 16 through a second cold side circulating pump 7, a secondary refrigerant outlet of the sewage heat exchanger 28 is connected with a secondary refrigerant inlet of the first evaporator 16, a refrigerant outlet of the first evaporator 16 is connected with a first heat recoverer 12, a gas outlet of the first heat recoverer 12 is connected with a first refrigeration compressor 10, the first refrigeration compressor 10 is connected with a first condenser 11, a high-temperature water outlet of 55 ℃ of the first condenser 11 is connected with a direct-heating hot water tank 6, high-temperature water of 55 ℃ of the direct-heating hot water tank 6 is connected with a water inlet of a tableware cleaning and disinfecting production line 32, sewage discharged by the direct-heating hot water tableware cleaning and disinfecting production line is connected with the sewage pool, an outlet of the first condenser 11 is connected with the first heat recoverer 12, and a liquid outlet of the first heat recoverer 12 is sequentially connected with a first drying filter 13, a second cold side circulating, The first electromagnetic valve 14, the first sight glass 15, the first throttle 17 and the first evaporator 16 are connected.

The outlet of the cold-carrying medium pipeline of the water-heating air conditioner 29 is connected with the cold-carrying medium inlet of a second evaporator through a first cold-side circulating pump 2, the cold-carrying medium outlet of the second evaporator is connected with the inlet of the cold-carrying medium pipeline of the water-heating air conditioner 29, the water-heating air conditioner 29 is arranged at one side of a tableware cleaning and disinfecting production line, the outlet of the refrigerant of the second evaporator 25 is connected with a second heat recoverer 20, the gas outlet of the refrigerant of the second heat recoverer 20 is connected with a second refrigeration compressor 18, the second refrigeration compressor 18 is connected with a second condenser 19, the refrigerant outlet of the second condenser is connected with the second heat recoverer 20, the liquid outlet of the second heat recoverer 20 is sequentially connected with a second drying filter 21, a second electromagnetic valve 22, a second liquid viewing mirror 23, a second throttle valve 24 and the refrigerant inlet of the second evaporator 25, a circulating hot water tank 5 is connected with the low-temperature water inlet of the second condenser through a second hot-side circulating pump, the 55 ℃ high-temperature water outlet at the hot side of the second condenser 19 is connected with the circulating hot water tank 5, the 55 ℃ high-temperature water outlet at the hot side of the circulating hot water tank 5 is respectively connected with the hot sides of the constant temperature heat exchanger 8 and the plate heat exchanger 9, the low-temperature water at the hot sides of the constant temperature heat exchanger 8 and the plate heat exchanger 9 is connected with the cold-side low-temperature water inlet of the circulating water tank 5 through the first hot-side circulating water pump 3, the high-temperature water at the cold sides of the constant temperature heat exchanger 8 and the plate heat exchanger 9 is connected with the high-temperature water inlet of the tableware cleaning and disinfecting production line 32, and the low-temperature water outlet of the tableware cleaning and disinfecting production line 32 is.

The utility model comprises two sets of water supply systems, a function direct-heating water system and a function two-circulation water system. The functional direct-heating hot water system comprises three parts, namely a direct-heating hot water unit refrigerant system in the special hot water unit 1 for the tableware cleaning and disinfecting production line, and a low-temperature heat source secondary refrigerant system which comprises a sewage tank 27, a sewage heat exchanger 28, a second cold side circulating pump 7 and other equipment, a sewage recycling pipeline and the like; and thirdly, the high-temperature side direct hot water system comprises a direct hot water tank 6, a direct hot water supply pump 26, a direct hot water pipeline, a temperature control valve and other equipment. The functional two-circulation hot water system consists of three parts, namely a refrigerant system of a circulation hot water unit in the special hot water unit 1 for the tableware cleaning and disinfecting production line; the low-temperature heat source refrigerating medium system comprises a water heating air conditioner 29, a first cold side circulating pump 2 and other equipment, a pipeline for recovering damp and hot air and the like; and the third step is that the high-temperature side circulating hot water system comprises a circulating hot water tank 5, a second hot side circulating water pump 4, a tap water tank 30, a constant temperature heat exchanger 8, a plate heat exchanger 9, a first hot side circulating water pump 3, a third cold side circulating water pump 31, a water pipeline, a temperature control valve and the like. Two sets of independent refrigerating systems are arranged inside the special hot water unit 1 for the tableware cleaning and disinfecting production line to respectively provide heat sources for producing direct hot water and circulating hot water, wherein the equipment of a refrigerant system of the direct hot water comprises: the system comprises a first refrigeration compressor 10, a second condenser 11, a first heat recoverer 12, a first dry filter 13, a first electromagnetic valve 14, a first sight glass 15, a first throttle valve 17, a first evaporator 16, a hydroelectric control component, a pipeline and the like; the equipment of the refrigerant system for circulating hot water is as follows: the system comprises a second refrigeration compressor 18, a second condenser 19, a second heat recoverer 20, a second drying filter 21, a second electromagnetic valve 22, a second liquid viewing mirror 23, a second throttle valve 24, a second evaporator 25, hydroelectric and electric control components, pipelines and the like.

Description of the working process:

the utility model discloses an independent heating system of two parts:

1. the working process of the direct hot water system is as follows: when the special hot water unit 1 for the tableware cleaning and disinfecting production line is started, the second cold-side circulating pump 7 is started simultaneously, the secondary refrigerant soaked in the sewage heat exchanger 28 in the sewage pool exchanges heat with the low-temperature heat source, namely sewage (50-55 ℃) discharged by the tableware cleaning and disinfecting production line and recycled in the sewage pool 27, the low-temperature secondary refrigerant absorbs heat and becomes high-temperature secondary refrigerant, the high-temperature secondary refrigerant is pumped into the first evaporator 16 of the special hot water unit 1 for the tableware cleaning and disinfecting production line by the second cold-side circulating pump 7, the high-temperature secondary refrigerant exchanges heat with low-temperature refrigerant liquid in the first evaporator 16, the high-temperature secondary refrigerant emits heat and becomes low-temperature secondary refrigerant, the low-temperature secondary refrigerant returns to the sewage heat exchanger 28 in the sewage pool 27, the sewage is continuously discharged from the production line into the sewage pool to provide heat, the heat is changed from the low-temperature secondary refrigerant after absorbing the heat of the sewage into the high-temperature secondary Providing a low-temperature heat source for a refrigerating system, and repeating the processes, namely the recycling process of the sewage waste heat in a circulating and reciprocating way; the low-temperature refrigerant liquid in the first evaporator 16 absorbs heat of the high-temperature secondary refrigerant and evaporates into refrigerant gas, the refrigerant gas enters the first heat recovery device 12 through the gas return pipeline to absorb heat to form superheated vapor, the superheated vapor is sucked by the first refrigeration compressor 10, the refrigerant gas is compressed to be raised to high-pressure exhaust pressure through low-pressure suction pressure, and the refrigerant gas enters the first condenser 11 under the action of the exhaust pressure. Two paths of heat exchange pipelines are wound together in the first condenser 11, one path is communicated with a refrigerant, and the other path is communicated with a normal-temperature water source; hot water is produced in the condenser in a refrigerant-water heat exchange mode, namely high-temperature refrigerant gas is cooled by a normal-temperature water source in the first condenser 11 to release heat and is condensed into high-temperature refrigerant liquid, and liquid refrigerant leaves the first condenser 11 and is recooled into supercooled refrigerant liquid by low-temperature superheated steam through the first heat recoverer 12; the water source in the first condenser 11 absorbs the heat released by the condensation of the high-temperature and high-pressure refrigerant gas, rapidly raises the temperature to the designed temperature of 55 ℃ hot water, flows out of the high-temperature 55 ℃ water outlet of the first condenser 11 of the unit 1, flows into the direct-heating hot water tank 6 through the direct-heating hot water pipeline, and is stored, so that the process of producing the direct-heating hot water is completed, and simultaneously, the process of converting a low-grade heat source (sewage) into a high-grade heat source (hot water) by running together with the electric power compensated by the first refrigeration compressor 10 is completed.

Supercooled refrigerant liquid from a first heat recoverer 12 is dried by a first drying filter 13, a first electromagnetic valve 14 controls the on-off of the flowing of the refrigerant, a first liquid viewing mirror 15 displays the liquid level of the refrigerant, the refrigerant is reduced from condensation pressure to evaporation pressure by a first throttle valve 17, the supercooled liquid of the refrigerant with low temperature and low pressure enters a first evaporator 17, the supercooled liquid of the refrigerant absorbs the heat of high-temperature secondary refrigerant in the first evaporator 17 and is evaporated into refrigerant gas, the refrigerant gas enters the first heat recoverer 12 through a gas return pipeline, the heat of the high-temperature refrigerant liquid absorbed in the first heat recoverer 12 is superheated refrigerant vapor and is sucked by a first refrigeration compressor, the refrigerant gas is compressed into high-temperature and high-pressure refrigerant gas, and the process of reverse Carnot only needs to be repeated; along with the normal operation of the special hot water unit 1 for the tableware disinfection production line, the direct hot water with the temperature of 55 ℃ is continuously sent into the direct hot water tank 6 from the high-temperature water outlet of the first condenser 11 for storage, and is supplied to the disposable cleaning production line of the cleaning and disinfection production line under the action of the direct hot water supply pump 26 for replacing the hot water and supplementing the water requirement of the hot water lost in the cleaning and disinfection production process at all times.

2. The production process of the circulating hot water system comprises the following steps: when the special hot water unit 1 for the tableware disinfection production line is started, the first cold side circulating pump 2 is started, the water-heating air conditioner 29 sucks a low-temperature heat source, namely high-temperature (50-55 ℃) damp and hot air emitted above the tableware cleaning and disinfection production line, low-temperature water secondary refrigerant in the water-heating air conditioner 29 exchanges heat with the high-temperature (50-55 ℃) damp and hot air, the high-temperature (50-55 ℃) damp and hot air is cooled to release heat, and the cooled air is sent back to the tableware cleaning and disinfection production line, so that the comfort level of operators on the production line is improved; the low-temperature water secondary refrigerant in the water-heating air conditioner 29 absorbs heat and then is converted into high-temperature secondary refrigerant, the high-temperature secondary refrigerant is pumped into the second evaporator 25 of the special hot water unit 1 for the tableware cleaning and disinfecting production line by the first cold-side circulating pump 2, the high-temperature refrigerating medium in the second evaporator 25 exchanges heat with the low-temperature low-pressure refrigerant liquid in the second evaporator 25, the high-temperature refrigerating medium releases heat and is converted into the low-temperature refrigerating medium to return to a water-heating air conditioner 29 arranged beside the production line, in the water-heating air conditioner 29, the low-temperature secondary refrigerant absorbs the high-temperature (50-55 ℃) damp and hot air emitted above the production line again and is converted into high-temperature secondary refrigerant, the high-temperature secondary refrigerant is pumped into the second evaporator 25 in the special hot water unit 1 for the tableware cleaning and disinfecting production line by the first cold-side circulating pump 2 to provide a low-temperature heat source for the refrigerating system, and the above processes are repeated, namely the waste heat of the indoor damp and hot air is recycled; the refrigerant gas enters the second heat recovery device 20 through the gas return line, absorbs heat of the high-temperature refrigerant liquid again in the second heat recovery device 20, is converted into superheated vapor, is sucked by the second refrigeration compressor 18 through the gas return line, is compressed, is increased to high-pressure exhaust pressure through low-pressure suction pressure, and enters the second condenser 19 under the action of the exhaust pressure. Two heat exchange channels are arranged in the second condenser 19 and are mutually attached, one is a refrigerant channel, the other is a circulating water source channel, hot water is produced in the second condenser 19 in a refrigerant-water heat exchange mode, namely, high-temperature refrigerant gas is cooled by circulating water in the second condenser 19 to release heat, the high-temperature refrigerant gas is converted into high-temperature refrigerant liquid, the high-temperature refrigerant liquid enters the second heat recoverer 20, and the high-temperature refrigerant gas is cooled by low-temperature refrigerant gas in the second heat recoverer 20 to be converted into subcooled refrigerant liquid.

Circulating water in the circulating hot water tank 5 is mixed with a circulating pump at a second cold side of a tap water well in a low-temperature (10-12 ℃) tap water tank 30 and pumped into a second condenser 19, low-temperature cooling water absorbs heat of high-temperature and high-pressure refrigerant gas in the condenser in the second condenser 19, the low-temperature cooling water flows out of a circulating hot water outlet of the unit 1 after being heated to 55 ℃, the low-temperature cooling water flows into the circulating hot water tank 5 through a circulating hot water pipeline to store heat, and a process of producing circulating hot water and converting a low-grade heat source (damp and hot air) into a high-grade heat source (hot water) together with electric power compensated by the operation of a second refrigeration compressor 18 is. The refrigerant liquid supercooled by the second heat recovery device 20 enters the second drying filter 21 for drying, the second electromagnetic valve 22 controls the on-off of the refrigerant flow, the second liquid viewing mirror 23 displays the liquid level of the refrigerant, the low-temperature refrigerant liquid passes through the second throttle valve 24 and then reduces the pressure of the low-temperature refrigerant liquid to evaporation pressure, the low-temperature low-pressure refrigerant liquid enters the second evaporator 25 to absorb the heat of the high-temperature secondary refrigerant and then evaporates into low-temperature refrigerant gas, the low-temperature low-pressure refrigerant gas enters the second heat recovery device 20 through the gas return pipeline to absorb the heat of the high-temperature refrigerant liquid again to be in a superheated refrigerant vapor state, and then the low-temperature low-pressure refrigerant liquid is sucked by the. Along with the normal operation of the special hot water unit 1 for the tableware disinfection production line, the circulating hot water with the temperature of 55 ℃ is continuously sent into the circulating hot water tank 6 for storage and heat storage, so that the tableware disinfection production line can keep constant temperature and provide a heat source: circulating hot water with the temperature of 55 ℃ is sent into a constant temperature heat exchanger 8 and a plate heat exchanger 9 through a constant temperature water supply pipeline; the constant temperature heat exchanger 8 is a square shell-and-tube heat exchanger, a stainless steel spiral tube is arranged inside the heat exchanger, high-temperature heat source water is introduced into the stainless steel spiral tube, the stainless steel spiral tube is soaked by using water (carrying greasy dirt and residues) of a tableware cleaning and disinfecting production line, a detachable cleaning opening is arranged on the top surface of the shell, and a sewage discharge opening is arranged at the bottom of the shell. The structure has high heat exchange efficiency, is convenient to clean, and is suitable for being used in a tableware cleaning and disinfecting production line. Because the water used in the tableware cleaning and disinfecting production line is subjected to tableware cleaning and disinfecting operation and water flow, part of heat is dissipated and taken away by damp and hot air, and the temperature of the water used in the production line is reduced. In order to keep the water temperature constant, the hot side of the constant temperature heat exchanger 8 and the plate heat exchanger 9 uses high temperature 55 ℃ water introduced by the circulating hot water tank 5 as a heat source, the high temperature water is pumped back to the circulating water tank 5 through the first hot side circulating pump 3 after heat is discharged, the low temperature water of the tableware cleaning and disinfecting production line is pumped into the cold side of the constant temperature heat exchanger 8 and the cold side of the plate heat exchanger 9 through the third cold side circulating water pump 31, water-water heat exchange is carried out in the constant temperature heat exchanger 8 and the plate heat exchanger, the low temperature water is converted into high temperature water after absorbing heat and then returned to the production line, the water used by the original production line is mixed to keep the constant temperature of the water used by the production line for cleaning and disinfecting tableware, the temperature of the production line for disinfecting tableware is washed and disinfected again after flowing, then the temperature is reduced again, the third cold side circulating water pump 31 pumps the low temperature, meanwhile, high-temperature water from the circulating hot water tank 5 enters the hot sides of the constant-temperature heat exchanger 8 and the plate heat exchanger 9, and water-water heat exchange is carried out in the constant-temperature heat exchanger 8 and the plate heat exchanger, and the steps are repeated in such a circulating way; the low-temperature mixed water which is pumped back to the hot water circulating tank 5 by the first hot-side circulating water pump 3 is pumped into a hot-side low-temperature water inlet of the second condenser 19 by the second hot-side circulating pump 4 at the low-temperature water outlet of the hot water circulating tank, and the high-temperature water 55 ℃ at the hot-side outlet of the second condenser 19 is connected with the hot water circulating tank 5, and the high-temperature water 55 ℃ is produced by recirculation according to the circulation process and is continuously supplemented to the hot water circulating tank 5 to maintain the constant temperature of 55 ℃.

From this circulation is reciprocal, the utility model discloses store in directly hot-water tank 6 by the directly hot-water 55 ℃ of the special hot water unit 1 operation production of tableware cleaning and disinfecting production line, the circulation hot-water 55 ℃ of simultaneous production stores in circulation hot-water tank 5, and directly hot-water directly supplies water for tableware cleaning and disinfecting production line, and circulation hot-water passes through constant temperature heat exchanger 8 and plate heat exchanger 9, uses the heat supply source to keep its constant temperature for tableware cleaning and disinfecting production line. The utility model discloses a retrieve the waste heat of the sewage of emission among the tableware cleaning and disinfecting process and the heat that is taken away by damp and hot air that gives off among the cleaning and disinfecting tableware process as the low temperature heat source, together with the electric power of the special hot water unit 1 operation compensation of tableware cleaning and disinfecting production line together change into the high temperature heat source, produce hot water with this clean energy, replace the traditional technology that the boiler burns water, be the hot water heating apparatus of an advanced science.

The utility model discloses a waste heat recovery system, tableware cleaning and disinfecting production line special hot water unit 1 and water management system constitute:

the first function of the special water heater unit 1 for the tableware cleaning and disinfecting production line comprises the following steps: the system comprises a first refrigeration compressor 10, a first condenser 11, a first heat recoverer 12, a first drying filter 13, a first electromagnetic valve 14, a first liquid viewing mirror 15, a first throttle valve 16, a first evaporator 17, a pipeline, an electric control component and the like. Waste heat recovery equipment of direct hot water system: a sewage tank 27, a sewage heat exchanger 28, a second cold-side circulating pump 7, a sewage pipeline, a secondary refrigerant pipeline, a control valve and the like. The water system of direct heating comprises direct heating hot-water tank 6, direct heating water supply pump 26, water pipeline and control valve spare etc. once only heats the normal atmospheric temperature running water to 55 ℃, realizes low energy consumption, the characteristics of big difference in temperature energy high efficiency conversion, the utility model discloses device novel structure, the technique is leading.

The second function of the special water heater unit 1 for the tableware cleaning and disinfecting production line comprises the following equipment for producing circulating hot water: a second refrigeration compressor 18, a second condenser 19, a second heat recovery device 20, a second dry filter 21, a second electromagnetic valve 22, a second sight glass 23, a second throttle valve 24, a second evaporator 25, a pipeline, an electric control component and the like, and a waste heat recovery device of a circulating hot water system: a water heating air conditioner 29, a first cold side circulating pump 2. The circulating water system comprises a circulating hot water tank 5, a second hot side circulating water pump 4, a constant temperature heat exchanger 8, a plate heat exchanger 9, a first hot side circulating water pump 3, a third cold side circulating water pump 31, a pipeline, a control valve and the like. The water-water heat exchange system is carried out on the produced circulating hot water and tableware cleaning and disinfecting production line by using water, the design is unique, and the heat exchange scheme is efficient and convenient to implement.

The utility model discloses a waste heat recovery system, special hot water unit of tableware cleaning and disinfecting production line and water management system, the design purpose is given off the two way waste heat recovery of the damp heat steam in the air with the hot water unit 1 of the special hot water unit of tableware cleaning and disinfecting production line through the sewage of 50~55 ℃ that tableware cleaning and disinfecting production line discharged and tableware cleaning and disinfecting production line and low temperature heat source, the electric energy of 1 operation compensation of the special hot water unit of tableware cleaning and disinfecting production line together changes the high temperature heat source, utilize high temperature heat source production 55 ℃ hot water, satisfy the demand that uses hot water volume on the cleaning and disinfecting tableware production line and keep using the homothermal demand of water on the cleaning and disinfecting tableware production line.

Claims

1. A hot water supply system characterized by: the system includes special hot water unit of tableware disinfection production line (1), sewage waste heat recovery system, straight hot water supply system, indoor air waste heat recovery system, constant temperature are with circulation hot water system, tableware cleaning and disinfecting production line (32), special hot water unit of tableware disinfection production line (1) is including straight hot refrigerant system and constant temperature with circulation hot water refrigerant system, straight hot refrigerant system includes: the device comprises a first refrigeration compressor (10), a first condenser (11), a first heat recoverer (12), a first throttle valve (17) and a first evaporator (16), wherein the sewage waste heat recovery system comprises a sewage pool (27) and a sewage heat exchanger (28), the sewage heat exchanger (28) is arranged in the sewage pool (27), the sewage heat exchanger (28) is connected with the first evaporator (16) to form a first secondary refrigerant loop, a refrigerant outlet of the first evaporator (16) is connected with the first heat recoverer (12), a gas outlet of the first heat recoverer (12) is connected with the first refrigeration compressor (10), the first refrigeration compressor (10) is connected with a refrigerant pipeline of the first condenser (11), a medium-high temperature water outlet of the first condenser (11) is connected with a direct heat water tank (6), the direct heat water tank (6) is connected with a tableware cleaning and disinfecting production line (32), a sewage outlet of the tableware cleaning and disinfecting production line (32) is connected with a sewage pool (27), a refrigerant liquid outlet of the first heat recoverer (12) is connected with a first throttling valve (17), and the first throttling valve (17) is connected with a first evaporator (16); the constant-temperature circulating hot water refrigerant system in the special hot water unit (1) for the tableware disinfection production line comprises a second refrigeration compressor (18), a second condenser (19), a second heat recoverer (20), a second throttle valve (24) and a second evaporator (25), wherein the second evaporator (25) and a water-heating air conditioner (29) form a second secondary refrigerant circulating loop, a refrigerant outlet of the second evaporator (25) is connected with the second heat recoverer (20), a gas outlet of the second heat recoverer (20) is connected with the second refrigeration compressor (18), the second refrigeration compressor (18) is connected with a refrigerant pipeline of the second condenser (19), a high-temperature water outlet in the second condenser (19) is connected with a hot water circulating tank (5), and a high-temperature water outlet of the circulating hot water tank (5) is connected with a constant-temperature heat exchanger (8) and a high-temperature water inlet at the high temperature side of a plate-type heat exchanger (9), the constant temperature heat exchanger (8) and the plate heat exchanger (9) are connected with the circulating hot water tank (5) at a low temperature water outlet at a high temperature side, the tableware cleaning and disinfecting production line (32) is connected with the constant temperature heat exchanger (8) and the plate heat exchanger (9) at a low temperature water outlet at a low temperature side, the constant temperature heat exchanger (8) and the plate heat exchanger (9) are connected with the tableware cleaning and disinfecting production line (32) at a low temperature water outlet at a low temperature side, the second condenser (19) is connected with a refrigerant liquid port of the second heat recoverer (20), the refrigerant liquid outlet of the second heat recoverer (20) is connected with the second throttle valve (24), the second throttle valve (24) is connected with the second evaporator (25), and the circulating hot water tank (5) is connected with the low temperature water inlet of the second condenser (19).

2. A hot water supply system according to claim 1, wherein: the direct-heating hot water tank (6) is connected with a tableware cleaning and disinfecting production line (32) to form a loop, and a hot-side water supply pump (26) is arranged on the loop.

3. A hot water supply system according to claim 1, wherein: and a cold side outlet of the circulating hot water tank (5) is connected with a low-temperature water inlet of the first condenser (11) to form a loop, and a second hot side circulating pump (4) is arranged on the loop.

4. A hot water supply system according to claim 1, wherein: the constant temperature heat exchanger (8) is a square shell-and-tube heat exchanger, a stainless steel spiral tube is arranged inside the constant temperature heat exchanger, a detachable cleaning opening is formed in the top surface of the shell of the constant temperature heat exchanger, and a sewage draining outlet is formed in the bottom of the shell.

5. A hot water supply system according to claim 1, wherein: the constant temperature heat exchanger (8) and the plate heat exchanger (9) hot side are connected with the hot side outlet of the circulating hot water tank (5) to form a loop, and a first hot side circulating pump (3) is arranged on the loop, and the constant temperature heat exchanger (8) and the plate heat exchanger (9) cold side are connected with the tableware cleaning and disinfecting production line (32) to form a loop on which a third cold side circulating pump (31) is arranged.

6. A hot water supply system according to claim 1, wherein: the sewage heat exchanger (28) is connected with the first evaporator (16) to form a loop, and a second cold-side circulating pump (7) is arranged on the loop.

7. A hot water supply system according to claim 1, wherein: and a first drying filter (13), a first electromagnetic valve (14), a first liquid sight glass (15) and a first throttle valve (17) are arranged on a connecting pipeline between a refrigerant outlet of the first heat recoverer (12) and the first evaporator (16) in sequence.

8. A hot water supply system according to claim 1, wherein: and a first cold-side circulating pump (2) is arranged on a second secondary refrigerant circulating loop formed by the water-heating air conditioner (29) and the second evaporator (25).

9. A hot water supply system according to claim 1, wherein: the water heating air conditioner (29) is arranged beside a tableware cleaning and disinfecting production line (32).

10. A hot water supply system according to claim 1, wherein: and a pipeline connecting the second heat recoverer (20) and the second evaporator (25) is provided with a second dry filter (21), a second electromagnetic valve (22), a second liquid sight glass (23), a second throttle valve (24) and the second evaporator (25).