CN223153787U - Steam and cold water dual-purpose heat pump unit - Google Patents
Steam and cold water dual-purpose heat pump unitInfo
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- CN223153787U CN223153787U CN202422206791.5U CN202422206791U CN223153787U CN 223153787 U CN223153787 U CN 223153787U CN 202422206791 U CN202422206791 U CN 202422206791U CN 223153787 U CN223153787 U CN 223153787U
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Abstract
本实用新型涉及一种蒸汽与冷水两用热泵机组，包括低温级循环单元、高温级循环单元、蒸汽发生单元；在蒸汽发生单元循环中自来水从与低温级循环单元共用的预热器到第一、第二冷凝器，可以一次性从20℃直接加热到120℃，实现大温差换热；同时系统冷水为厨房空调系统和食品冷藏柜提供稳定的低温冷源；作为低温级循环单元和高温级循环单元之间热交换的冷凝‑蒸发器采用三通道设计，除了低温级循环单元、高温级循环单元共用进行冷热转换，同时当厨房内具备油烟等高温余热时，冷凝‑蒸发器第三通道的余热进口调节阀和余热出口调节阀开启，厨房余热排入第三通道，并利用高温级循环单元直接将第三通道内的厨房余热回收利用。实现餐饮行业的热泵的冷热综合利用。
The utility model relates to a steam and cold water dual-purpose heat pump unit, comprising a low-temperature circulation unit, a high-temperature circulation unit, and a steam generating unit; in the circulation of the steam generating unit, tap water can be directly heated from 20°C to 120°C from a preheater shared with the low-temperature circulation unit to the first and second condensers at one time, realizing large temperature difference heat exchange; at the same time, the system cold water provides a stable low-temperature cold source for the kitchen air conditioning system and the food refrigerator; the condenser-evaporator used for heat exchange between the low-temperature circulation unit and the high-temperature circulation unit adopts a three-channel design, in addition to the low-temperature circulation unit and the high-temperature circulation unit sharing the cold and heat conversion, when there is high-temperature waste heat such as oil smoke in the kitchen, the waste heat inlet regulating valve and the waste heat outlet regulating valve of the third channel of the condenser-evaporator are opened, the kitchen waste heat is discharged into the third channel, and the high-temperature circulation unit is used to directly recycle the kitchen waste heat in the third channel. The cold and heat comprehensive utilization of the heat pump in the catering industry is realized.
Description
Technical Field
The utility model relates to a heat pump technology, in particular to a steam and cold water dual-purpose heat pump unit.
Background
With the increasing worldwide energy crisis and environmental problems, energy conservation and carbon reduction have become one of the important directions of various industries. The traditional kitchen equipment generally adopts coal gas (such as natural gas and liquefied petroleum gas) as a main energy source, so that the energy utilization efficiency is low, and meanwhile, the environment pollution and the greenhouse effect are caused, and the current requirements on the efficient energy-saving technology are difficult to meet.
In recent years, along with the rapid development of renewable energy technology and the clean transformation of an electric power system, the electric energy driving equipment is utilized to replace the traditional kitchen gas, so that the energy-saving and emission-reducing system not only accords with the national policy guidance of energy conservation and emission reduction, but also is a necessary trend of promoting the transformation of a green kitchen, optimizing an energy structure and improving the energy utilization efficiency. Meanwhile, along with the development of society and the improvement of living standard of people, the requirements of the catering industry on kitchen environment and equipment are gradually improved. Steam agers, sterilizer, air conditioner and food refrigerated cabinet etc. often set up independently in traditional kitchen, and the function is comparatively single, and often is full of steam and oil smoke in the kitchen, are difficult to satisfy modern kitchen to the urgent demand of multi-functional integrality, high-efficient energy-saving nature and travelling comfort.
In view of this current situation, heat pump technology is attracting attention as an efficient energy conversion technology. Under the drive of electric energy, the hot end of the heat pump can provide heat energy, and the cold end can realize refrigeration, so that the heat pump has good energy utilization efficiency, but the current heat pump system cannot reasonably utilize the cold energy generated by the cold end. Therefore, the development of the efficient heat pump system integrating the functions of refrigeration, heating (steam) and waste heat recovery can not only meet the multifunctional requirements of kitchen equipment, but also greatly improve the energy utilization efficiency, reduce the carbon emission of a kitchen, accord with the current policy guidance of energy conservation and emission reduction, and provide powerful support for the sustainable development of the catering industry.
Disclosure of utility model
Aiming at the problems that the traditional kitchen equipment relies on coal gas as a main energy source, so that the energy utilization efficiency is low and the environmental pollution and the greenhouse effect are caused, the steam and cold water dual-purpose heat pump unit is provided, an overlapping heat pump technology is adopted, the electric energy is adopted to drive the kitchen waste heat or low-grade heat energy in the environment to be directly lifted to a high-temperature state, high-temperature steam with the temperature of more than 120 ℃ is generated, the requirements of cooking food and equipment disinfection in a kitchen are met, meanwhile, cold water with the temperature of below 15 ℃ is prepared at the cold end of the system, and a stable low-temperature cold source is provided for a kitchen air conditioning system and a food refrigerated cabinet. The intelligent temperature control system is arranged in the unit, all functional modules can be independently controlled, the requirements of modern kitchens on various functions such as steam cooking, sterilization and disinfection, food refrigeration, kitchen air conditioning and the like are met, and kitchen oil smoke waste heat recovery can be realized simultaneously.
The technical scheme of the utility model is that the steam and cold water dual-purpose heat pump unit comprises a low-temperature-level circulating unit, a high-temperature-level circulating unit and a steam generating unit;
the low-temperature-stage circulation unit comprises an evaporator, a low-temperature compressor, a condensation-evaporator, a preheater, a liquid reservoir and a low-temperature expansion valve which are sequentially connected, and returns to the evaporator to form closed loop circulation;
The high-temperature-stage circulation unit comprises a high-temperature compressor, a first condenser, a second condenser, a high-temperature expansion valve and a condensation-evaporator which are sequentially connected, and returns to the high-temperature compressor to form closed loop circulation;
The steam generation unit comprises a water supplementing pump, a first electric regulating valve, a flash tank, a second electric regulating valve, a circulating pump, a third electric regulating valve, a pressure gauge on the flash tank for testing pressure, a preheater, a first condenser and a second condenser;
The low-temperature low-pressure liquid refrigerant in the evaporator absorbs heat of the kitchen environment, and is changed into low-temperature refrigerant steam which enters the low-temperature compressor, the steam which is changed into high-temperature high-pressure in the low-temperature compressor sequentially enters the condensation-evaporator and the preheater, the heat is released to the high-temperature circulating system, then the phase-change cooling is changed into low-temperature high-pressure liquid refrigerant, the low-temperature high-pressure liquid refrigerant flows into the liquid accumulator, part of the refrigerant in the liquid accumulator flows into the low-temperature expansion valve, and the low-temperature refrigerant returns to the evaporator after being throttled and depressurized, so that the circulating process of the low-temperature circulating unit is completed;
The high-temperature-stage circulating working medium absorbs heat from a low temperature stage through a condensation-evaporator and then becomes refrigerant steam, the refrigerant steam which is compressed by a high-temperature compressor and then becomes high-temperature and high-pressure enters a first condenser and a second condenser in sequence, the refrigerant steam is cooled and then becomes low-temperature and high-pressure liquid refrigerant, and the liquid refrigerant returns to the condensation-evaporator after being throttled and depressurized by a high-temperature expansion valve, so that the circulating process of the high-temperature-stage circulating unit is completed;
Tap water enters the preheater through the electric regulating valve and the water supplementing pump which are connected in series, then enters the second condenser and the first condenser, absorbs heat of a high temperature stage, absorbs heat, enters the flash tank, steam is conveyed to a user end through the second electric regulating valve in the flash tank, and unused high temperature steam or hot water is pumped into the second condenser again through the third electric regulating valve and the circulating pump which are connected in series, so that circulation of the steam generating unit is completed.
Preferably, the condensation-evaporator is designed with three channels, the first channel is connected with the low-temperature-stage circulation unit, the second channel is connected with the high-temperature circulation unit, and the third channel is connected with an inlet and an outlet of kitchen fume through a waste heat inlet regulating valve and a waste heat outlet regulating valve to recycle waste heat in a kitchen.
Preferably, the preheater is a plate heat exchanger, one side fluid is low-temperature-level circulating working medium, the other side fluid is tap water conveyed by a water supplementing pump, the preheater utilizes waste heat of the low-temperature-level circulating working medium to preheat the tap water, the tap water is heated by the preheater, and after passing through the first condenser and the second condenser, the tap water at 20 ℃ is heated to 120 ℃ at one time.
Preferably, the pipeline system of the evaporator circulates to all parts of the kitchen to directly absorb low-temperature heat in the environment of the kitchen or the refrigerator, and cool the cooling equipment in the kitchen.
Preferably, the steam and cold water dual-purpose heat pump unit further comprises an outdoor evaporator connected in parallel with the evaporator, and used for absorbing heat of outdoor air and serving as a supplementary heat source.
Preferably, the evaporator and the outdoor evaporator are both fin type evaporators, and the fan is adjusted in a variable frequency manner.
Preferably, the condensation-evaporator, the preheater, the first condenser and the second condenser are all heat exchangers.
Preferably, the working medium in the high-temperature-level circulating unit is R245fa, and the working medium in the low-temperature-level circulating unit is R134a.
Preferably, the low-temperature compressor and the high-temperature compressor are both variable-frequency scroll compressors, and the temperature of the produced steam is controllable and adjustable.
The dual-purpose heat pump unit for steam and cold water has the advantages that the heat pump unit for steam and cold water can generate high-temperature steam with the temperature of more than 120 ℃ and generate cold water with the temperature of less than 15 ℃ to meet the cooling requirement of a kitchen, so that the energy combination substitution of a steam box, a sterilizing cabinet, an air conditioner and a refrigerated cabinet is realized, the functional requirements of various kitchen are met, the integration level and the use efficiency of kitchen equipment are improved, and the heat pump unit for steam and cold water is particularly suitable for a modern central kitchen. Meanwhile, the dual-purpose heat pump unit can also recycle waste heat of high-temperature oil smoke in a kitchen, and is combined with cold and hot combined supply, so that the utilization efficiency of heat energy is effectively improved, the dependence on traditional gas energy is reduced, the cold and hot comprehensive utilization of the heat pump is realized, and the dual-purpose heat pump unit is a powerful way for practicing the national energy saving and emission reduction policies.
Drawings
FIG. 1 is a schematic diagram of a dual-purpose heat pump unit for steam and cold water according to a first embodiment of the present utility model;
Fig. 2 is a schematic structural diagram of a dual-purpose heat pump unit for steam and cold water according to a second embodiment of the present utility model.
Reference numeral 1, a first evaporator; 2, a second evaporator, 3, a low-temperature compressor, 4, a condensation-evaporator, 4-1, a waste heat inlet regulating valve, 4-2, a waste heat outlet regulating valve, 5, a preheater, 6, a liquid storage device, 7, a low-temperature expansion valve, 8, a high-temperature compressor, 9, a first condenser, 10, a second condenser, 11, a high-temperature expansion valve, 12, a water supplementing pump, 12-1, a first electric regulating valve, 13, a flash tank, 13-1, a second electric regulating valve, 13-2, a circulating pump, 13-3, a third electric regulating valve, 13-4 and a pressure gauge.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present utility model is not limited to the following examples.
Embodiment one:
Referring to fig. 1, the present utility model provides a schematic diagram of a dual-purpose heat pump unit for steam and cold water, which includes a low-temperature-stage circulation unit, a high-temperature-stage circulation unit, a steam generation unit, and a plurality of connection pipes and valves. The low-temperature-stage circulation unit comprises a first evaporator 1 and a second evaporator 2 which are connected in parallel, a low-temperature compressor 3, a condensation-evaporator 4, a preheater 5, a liquid reservoir 6 and a low-temperature expansion valve 7 which are sequentially connected, and the first evaporator 1 and the second evaporator 2 which are connected in parallel are returned to form closed loop circulation. The high-temperature-stage circulation unit comprises a high-temperature compressor 8, a first condenser 9, a second condenser 10, a high-temperature expansion valve 11 and a condensation-evaporator 4 which are sequentially connected, and the high-temperature compressor 8 returns to form closed loop circulation. The steam generating unit comprises a water supplementing pump 12, a first electric regulating valve 12-1, a flash tank 13, a second electric regulating valve 13-1, a circulating pump 13-2, a third electric regulating valve 13-3, a pressure gauge 13-4 used for testing pressure on the flash tank 13, a preheater 5, a first condenser 9 and a second condenser 10.
The condenser-evaporator 4 adopts a three-channel design including a first channel, a second channel, and a third channel. The first channel is connected with the low-temperature-stage circulating unit, the second channel is connected with the high-temperature circulating unit, the third channel is connected with an inlet and an outlet of kitchen fume and used for recovering waste heat in a kitchen, and when the kitchen fume heating device is used, the waste heat inlet regulating valve 4-1 and the waste heat outlet regulating valve 4-2 are directly opened, and when the kitchen fume heating device is in use, the valves are closed.
When the kitchen has the requirements of steam and cooling, the low-temperature low-pressure liquid refrigerant absorbs the heat of the kitchen environment by using the first evaporator 1, then the low-temperature refrigerant steam is changed into the low-temperature compressor 3, the high-temperature high-pressure steam in the low-temperature compressor 3 is sequentially sent into the condensation-evaporator 4 and the preheater 5, the heat is released to the high-temperature circulating system, and then the phase-change cooling is performed to change the low-temperature high-pressure liquid refrigerant into the liquid accumulator 6. Part of the refrigerant in the liquid storage 6 flows into the low-temperature expansion valve 7, is throttled and depressurized and then returns to the first evaporator 1 again, and the circulation process of the low-temperature-stage circulation unit is completed.
The high-temperature-stage circulating working medium absorbs heat from a low temperature stage through the condensation-evaporator 4 and becomes refrigerant steam, the refrigerant steam which becomes high temperature and high pressure after being compressed by the high-temperature compressor 8 sequentially enters the first condenser 9 and the second condenser 10, the refrigerant steam becomes low-temperature and high-pressure liquid refrigerant after being cooled, and the liquid refrigerant returns to the condensation-evaporator 4 after being throttled and depressurized by the high-temperature expansion valve 11, so that the circulating process of the high-temperature-stage circulating unit is completed.
Tap water enters the preheater 5 through the electric regulating valve 12-1 and the water supplementing pump 12 which are connected in series, the residual heat of the low-temperature-level circulating working medium is utilized in the preheater to preheat the tap water, and then the tap water enters the second condenser 10 and the first condenser 9 to absorb the heat of the high temperature level. Tap water is heated by three heat exchanges of the preheater and the two condensers, the water temperature of the tap water can be increased to be more than 120 ℃, and then the tap water enters the flash tank 13. In the flash tank 13, the steam is delivered to the user side through the second electric control valve 13-1, and the unused high temperature steam or hot water is re-pumped into the second condenser 10 through the third electric control valve 13-3 and the circulation pump 13-2 connected in series, thereby completing the circulation of the steam generating unit.
The pipe system of the first evaporator 1 circulates to all parts of the kitchen, directly absorbs low-temperature heat in the kitchen environment or the refrigerated cabinet, and cools the kitchen air conditioner and the refrigerated cabinet. When the kitchen is provided with high-temperature waste heat such as oil smoke, the waste heat inlet regulating valve 4-1 and the waste heat outlet regulating valve 4-2 of the third channel of the condensation-evaporator 4 are opened, the kitchen waste heat is discharged into the third channel, and the kitchen waste heat in the third channel is directly recycled by the high-temperature-stage circulating unit. The second evaporator 2 starts to operate when the heat in the kitchen and the refrigerated cabinet is insufficient. The second evaporator 2 is placed outside the kitchen, and can be used as a supplementary heat source by absorbing heat of the outdoor air. When the user stops using the steam, the second electric adjusting valve 13-1 is closed, and the water supplementing pump 12 and the circulating pump 13-2 stop running.
The first evaporator 1 circulates the generated cold water to the kitchen through the pipe system directly, absorbs the heat in the room or the refrigerating equipment, and the tail ends are connected in parallel by the cold equipment and can be controlled independently.
The low-temperature compressor 3 and the high-temperature compressor 8 both adopt variable-frequency scroll compressors, so that the temperature of steam and cold water prepared by the system can be controlled and regulated while the structural compactness is ensured, and the nominal number of the steam and the cold water is 2-30HP, so that the use requirements of different scenes are met, and the comfort and the personalized use requirements of a kitchen are met.
The first evaporator 1 and the second evaporator 2 are fin type evaporators, and the fan can be adjusted in a variable frequency mode. The condensing-evaporator 4, the preheater 5, the first condenser 9 and the second condenser 10 are all plate heat exchangers, and the specification and the model depend on the number of compressors.
In the embodiment, the high-temperature circulating working medium is R245fa, and the low-temperature circulating working medium is R134a. The heat source of the high-temperature condenser is air at the temperature of 10-30 ℃. The low temperature stage can produce cold water below 15 ℃, the high temperature stage can produce high temperature steam or hot water above 120 ℃, and the temperature of the produced heat is 90-110 ℃ higher than the temperature of a heat source of the system.
Embodiment two:
Referring to fig. 2, the present utility model provides a schematic diagram of a dual-purpose heat pump unit for steam and cold water, which includes a low-temperature-stage circulation unit, a high-temperature-stage circulation unit, a steam generation unit, and a plurality of connection pipes and valves. The low-temperature-stage circulation unit comprises a second evaporator 2, a low-temperature compressor 3, a condensation-evaporator 4, a preheater 5, a liquid storage device 6 and a low-temperature expansion valve 7 which are sequentially connected, and returns to the second evaporator 2 to form closed loop circulation. The high-temperature-stage circulation unit comprises a high-temperature compressor 8, a first condenser 9, a second condenser 10, a high-temperature expansion valve 11 and a condensation-evaporator 4 which are sequentially connected, and the high-temperature compressor 8 returns to form closed loop circulation. The steam generating unit comprises a water supplementing pump 12, a first electric adjusting valve 12-1, a flash tank 13, a second electric adjusting valve 13-1, a circulating pump 13-2, a third electric adjusting valve 13-3, a pressure gauge 13-4 used for testing pressure on the flash tank 13, a preheater 5, a first condenser 9 and a second condenser 10.
The condenser-evaporator 4 adopts a three-channel design including a first channel, a second channel, and a third channel. The first channel is connected with the low-temperature-stage circulating unit, the second channel is connected with the high-temperature circulating unit, the third channel is connected with an inlet and an outlet of kitchen fume and used for recovering waste heat in a kitchen, and when the kitchen fume heating device is used, the waste heat inlet regulating valve 4-1 and the waste heat outlet regulating valve 4-2 are directly opened, and when the kitchen fume heating device is in use, the valves are closed.
When the kitchen only has the steam use requirement, the low-temperature low-pressure liquid refrigerant directly utilizes the second evaporator 2 to absorb the heat of the outdoor air, then the low-temperature refrigerant steam is changed into low-temperature refrigerant steam to enter the low-temperature compressor 3, the steam which is changed into high-temperature high-pressure by the low-temperature compressor 3 sequentially enters the condensation-evaporator 4 and the preheater 5, the heat is released to the high-temperature circulating system, and then the phase-change cooling is changed into low-temperature high-pressure liquid refrigerant which flows into the liquid accumulator 6. Part of the refrigerant in the liquid reservoir 6 flows into the low-temperature expansion valve 7, is throttled and depressurized, and then returns to the second evaporator 2 again, thereby completing the circulation process. The high-temperature-level circulating working medium absorbs heat from a low temperature level through the condensation-evaporator 4 and becomes refrigerant steam, the refrigerant steam which becomes high temperature and high pressure after being compressed by the high-temperature compressor 8 sequentially enters the first condenser 9 and the second condenser 10, the refrigerant steam becomes low-temperature and high-pressure liquid refrigerant after being cooled, and the liquid refrigerant returns to the condensation-evaporator 4 after being throttled and depressurized by the high-temperature expansion valve 11, so that the circulating process is completed. When the kitchen is provided with high-temperature waste heat such as oil smoke, the waste heat inlet regulating valve 4-1 and the waste heat outlet regulating valve 4-2 of the third channel of the condensation-evaporator 4 are opened, the kitchen waste heat is discharged into the third channel, and the kitchen waste heat in the third channel is directly recycled by the high-temperature-stage circulating unit. When the kitchen waste heat is sufficient, the low-temperature-level circulating unit is closed, and the kitchen waste heat is preferentially used for preparing high-temperature steam.
Tap water enters the preheater 5 through the water supplementing pump 12 and the electric regulating valve 12-1, the residual heat of the low-temperature-level circulating working medium is utilized to preheat the tap water, and then the tap water enters the second condenser 10 and the first condenser 9 to absorb the heat of the high temperature level. After being heated by the three heat exchangers in sequence, the water temperature of tap water can be raised to be more than 120 ℃ and then enters the flash tank 13. In the flash tank 13, the water vapor is delivered to the user side through the second electric control valve 13-1, and the unused high temperature vapor or hot water is re-pumped into the second condenser 10 through the circulation pump 13-2 and the third electric control valve 13-3. When the user stops using the steam, the second electric adjusting valve 13-1 is closed, and the water supplementing pump 12 and the circulating pump 13-2 stop running. In the embodiment, the high-temperature circulating working medium is R245fa, and the low-temperature circulating working medium is R134a. The heat source of the system is air at 10-30 ℃. The high temperature stage can generate high temperature steam or hot water with the temperature of more than 120 ℃ and the temperature of the generated heat is 90-110 ℃ higher than the temperature of a heat source of the system.
The steam and cold water dual-purpose heat pump unit realizes the cold and hot comprehensive utilization of a heat pump in the catering industry, tap water can be directly heated from a preheater to a first condenser and a second condenser from 20 ℃ to 120 ℃ at one time in the circulation of a steam generation unit, large-temperature-difference heat exchange is realized, and a three-way design is adopted as a condensation-evaporator 4 for heat exchange between a low-temperature-level circulation unit and a high-temperature-level circulation unit, so that the full heat recovery of a heat source is realized.
The above examples merely illustrate specific embodiments of the utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (9)
1. The steam and cold water dual-purpose heat pump unit is characterized by comprising a low-temperature-level circulating unit, a high-temperature-level circulating unit and a steam generating unit;
The low-temperature-level circulation unit comprises an evaporator, a low-temperature compressor (3), a condensation-evaporator (4), a preheater (5), a liquid storage device (6) and a low-temperature expansion valve (7) which are sequentially connected, and returns to the evaporator to form closed loop circulation;
The high-temperature-stage circulation unit comprises a high-temperature compressor (8), a first condenser (9), a second condenser (10), a high-temperature expansion valve (11) and a condensation-evaporator (4) which are sequentially connected, and returns to the high-temperature compressor (8) to form closed loop circulation;
The steam generation unit comprises a water supplementing pump (12), a first electric regulating valve (12-1), a flash tank (13), a second electric regulating valve (13-1), a circulating pump (13-2), a third electric regulating valve (13-3), a pressure gauge (13-4) used for testing pressure on the flash tank (13), a preheater (5), a first condenser (9) and a second condenser (10);
The low-temperature low-pressure liquid refrigerant in the evaporator absorbs heat of the kitchen environment, the low-temperature refrigerant vapor is changed into low-temperature refrigerant vapor to enter the low-temperature compressor (3), the high-temperature high-pressure vapor in the low-temperature compressor (3) sequentially enters the condensation-evaporator (4) and the preheater (5), the heat is released to the high-temperature circulating system, then the phase-change cooling is changed into the low-temperature high-pressure liquid refrigerant, the low-temperature high-pressure liquid refrigerant flows into the liquid accumulator (6), part of the refrigerant in the liquid accumulator (6) flows into the low-temperature expansion valve (7) and returns to the evaporator after being throttled and depressurized, and the circulation process of the low-temperature circulating unit is completed;
The high-temperature-stage circulating working medium absorbs heat from a low-temperature stage through a condensation-evaporator (4) and becomes refrigerant steam, the refrigerant steam which becomes high temperature and high pressure after being compressed by a high-temperature compressor (8) sequentially enters a first condenser (9) and a second condenser (10), the refrigerant steam becomes low-temperature and high-pressure liquid refrigerant after being cooled, and the liquid refrigerant returns to the condensation-evaporator (4) after being throttled and depressurized by a high-temperature expansion valve (11) to finish the circulating process of the high-temperature-stage circulating unit;
Tap water enters the preheater (5) through the electric regulating valve (12-1) and the water supplementing pump (12) which are connected in series, the residual heat of the low-temperature-level circulating working medium is utilized in the preheater (5) to preheat the tap water, then the tap water enters the second condenser (10) and the first condenser (9) to absorb heat of a high-temperature level, water enters the flash tank (13) after absorbing heat, steam is conveyed to a user side through the second electric regulating valve (13-1) in the flash tank (13), and unused high-temperature steam or hot water is pumped into the second condenser (10) again through the third electric regulating valve (13-3) and the circulating pump (13-2) which are connected in series, so that the circulation of the steam generating unit is completed.
2. The dual-purpose heat pump unit for steam and cold water according to claim 1, wherein the condensing-evaporating device (4) is designed with three channels, the first channel is connected with the low-temperature-stage circulating unit, the second channel is connected with the high-temperature circulating unit, and the third channel is connected with an inlet and an outlet of kitchen fume through a waste heat inlet regulating valve (4-1) and a waste heat outlet regulating valve (4-2) to recycle waste heat in a kitchen.
3. The dual-purpose heat pump unit for steam and cold water according to claim 1, wherein the preheater (5) is a plate heat exchanger, one side fluid is a low-temperature-level circulating working medium, the other side fluid is tap water conveyed by a water supplementing pump, the preheater uses waste heat of the low-temperature-level circulating working medium to preheat the tap water, the tap water is heated by the preheater (5), and after passing through the first condenser (9) and the second condenser (10), the tap water at 20 ℃ is heated to 120 ℃ at one time.
4. The dual-purpose heat pump unit for steam and cold water according to claim 1, wherein the pipeline system of the evaporator circulates to all parts of the kitchen, directly absorbs low-temperature heat in the kitchen environment or the refrigerator, and supplies cold for the cold equipment in the kitchen.
5. The dual-purpose heat pump unit for steam and cold water according to claim 4, further comprising an outdoor evaporator connected in parallel with the evaporator to absorb heat of outdoor air, and used as a supplementary heat source.
6. The dual-purpose heat pump unit for steam and cold water according to claim 5, wherein the evaporator and the outdoor evaporator are fin type evaporators and the fan is adjusted in a variable frequency manner.
7. The dual-purpose heat pump unit for steam and cold water according to claim 1, wherein the condensing-evaporator (4), the preheater (5), the first condenser (9) and the second condenser (10) are heat exchangers.
8. The dual-purpose heat pump unit for steam and cold water according to claim 1, wherein the working medium in the high-temperature-level circulating unit is R245fa, and the working medium in the low-temperature-level circulating unit is R134a.
9. The dual-purpose heat pump set for steam and cold water according to claim 8, wherein the low-temperature compressor (3) and the high-temperature compressor (8) are both variable-frequency scroll compressors, and the temperature of the produced steam is controllable and adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422206791.5U CN223153787U (en) | 2024-09-09 | 2024-09-09 | Steam and cold water dual-purpose heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422206791.5U CN223153787U (en) | 2024-09-09 | 2024-09-09 | Steam and cold water dual-purpose heat pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223153787U true CN223153787U (en) | 2025-07-25 |
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Family Applications (1)
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| CN202422206791.5U Active CN223153787U (en) | 2024-09-09 | 2024-09-09 | Steam and cold water dual-purpose heat pump unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN223153787U (en) |
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- 2024-09-09 CN CN202422206791.5U patent/CN223153787U/en active Active
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