CN101749860A - Circulation heat recovery heat pump type water heater - Google Patents

Circulation heat recovery heat pump type water heater Download PDF

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Publication number
CN101749860A
CN101749860A CN200910261703A CN200910261703A CN101749860A CN 101749860 A CN101749860 A CN 101749860A CN 200910261703 A CN200910261703 A CN 200910261703A CN 200910261703 A CN200910261703 A CN 200910261703A CN 101749860 A CN101749860 A CN 101749860A
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China
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liquid
heat
water
heat exchange
pipeline
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Pending
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CN200910261703A
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Chinese (zh)
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李辉
史琳
韩礼钟
连红奎
韩峰
翁方龙
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Tsinghua University
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Tsinghua University
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Priority to CN200910261703A priority Critical patent/CN101749860A/en
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Abstract

The invention relates to a circulation heat recovery heat pump type water heater, which is characterized in that the circulation heat recovery heat pump type water heater comprises a refrigeration loop, a heat flow return passage and a self circulation loop, wherein the refrigeration loop comprises a sealed flow passage formed by a compressor, a condenser, a liquid-liquid heat exchange evaporator and a liquid-gas heat exchange evaporator through being connected sequentially through pipelines, refrigeration working substances are filled in the refrigeration loop, the heat flow return passage comprises an open type flow passage formed by a heat return device, a condenser, a water storage tank, a first water pump and a hot water spraying device through being connected sequentially through pipelines, and also comprises an open type flow passage formed by a waste water collection tank, a second water pump, a heat return device and a liquid-liquid heat exchange evaporator through being connected sequentially through pipelines, hot water sprayed out through the hot water spraying device is discharged into the waste water collection tank after being used, and the self circulation loop comprises a sealed flow passage formed by a condenser, a water storage tank and a first water pump through being connected sequentially through pipelines. The invention can be widely used for bath or heating places such as factories, families, bath centers and the like, and has very large economic and market prospects.

Description

Circulation heat recovery heat pump type water heater
Technical field
The present invention relates to a kind of water heater, particularly the circulation heat recovery heat pump type water heater that running water is heated about a kind of recycling used heat.
Background technology
At present, because the whole world faces serious energy crisis and water resources crisis, China also is faced with huge economizer pressure, and therefore greatly developing the energy-saving and emission-reduction industry has become inexorable trend.In recent years, the domestic heat pump techniques that multiple recovery low-grade heat sources such as a lot of water resource heat pumps, geothermal-source heat pump and air source heat pump occurred, experience shows that these technology have obtained excellent popularization, has stronger adaptability simultaneously.But, but well do not utilized for containing a large amount of used heat in industry and the sanitary wastewater.Present stage, the heat pump that reclaims used heat in industry and the sanitary wastewater mainly is through a Waste Heat Recovery, the efficient that heat pump reclaims is not very high, and system energy efficiency is lower, thereby cause above-mentioned heat pump not possess stronger practicality, therefore these industry and sanitary wastewater are directly drained in a large number, have caused the waste of the huge energy.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide the circulation heat recovery heat pump type water heater that a kind of recycling used heat heats running water, it has characteristics such as systematic energy efficiency ratio is high and practical, has solved the phenomenon of used heat waste in a large amount of at present industry and the sanitary wastewater.
For achieving the above object, the present invention takes following technical scheme: a kind of circulation heat recovery heat pump type water heater, it is characterized in that: it comprises refrigerating circuit, backheat stream and self circular loop, described refrigerating circuit comprises a closed stream that connects compressor, condenser, liquid-liquid heat exchange evaporimeter and liquid-gas heat exchange evaporimeter composition by pipeline successively, described refrigerating circuit is evacuated earlier, and then the can refrigeration working medium; Described backheat stream comprises an open stream that connects regenerator, described condenser, storage tank, first water pump and heat water-spraying's device composition by pipeline successively, comprise that also one connects the open stream that wastewater collection pond, second water pump, described regenerator and described liquid-liquid heat exchange evaporimeter are formed successively by pipeline, the hot water of described heat water-spraying's device ejection enters in the described wastewater collection pond after using; Wherein before the described regenerator, between described first water pump and the heat water-spraying's device and first to the 3rd valve is set on the pipeline between second water pump and the regenerator respectively; Described self circular loop comprises that one connects the closed stream that described condenser, described storage tank and described first water pump are formed successively by pipeline, and the 4th valve is installed on the pipeline between described first water pump and the regenerator.
Temperature control system and tank level control system are installed on the described storage tank, and described temperature control system links to each other with the 4th valve with described compressor, described tank level control system links to each other with described first valve, be used for monitoring water temperature and liquid level in the described storage tank respectively, and control described compressor and described the first, the 4th valve event
The electric expansion valve of throttling action together is set on the pipeline of described refrigerating circuit.
The position of described liquid-liquid heat exchange evaporimeter and liquid-gas heat exchange evaporimeter can exchange.
On the pipeline between the described wastewater collection pond and second water pump, a drainpipe is set, and on described drainpipe, the 5th valve is installed.
A bypass in parallel between described wastewater collection pond and liquid-liquid heat exchange evaporimeter is equipped with the 6th valve in the described bypass.
The quantity in described heat water-spraying's device and wastewater collection pond is more than two, and adopts the arrangement of plural parallel stage, on the pipeline before every grade of described heat water-spraying's device of parallel connection described second valve is installed all.
The quantity of described liquid-liquid heat exchange evaporimeter, liquid-gas heat exchange evaporimeter and regenerator is more than two, and adopts the mode of plural serial stage.
Described condenser, liquid-liquid heat exchange evaporimeter and liquid-gas heat exchange evaporimeter all adopts plate-fin, fin tube type, removable board-like, whole board-like or tubulation shell-and-tube heat exchange structure.
The present invention is owing to take above technical scheme, it has the following advantages: 1, the present invention includes refrigerating circuit, backheat stream and three heat-exchange systems of self circular loop, mode by recycling used heat backheat, can utilize used heat to greatest extent, obtain the highest systematic energy efficiency ratio, therefore have very strong practicality, solved the phenomenon of used heat waste in a large amount of at present industry and the sanitary wastewater.2, the present invention is provided with one or more liquid-liquid heat exchange evaporimeter and liquid-gas heat exchange evaporimeter in refrigerating circuit, combine the advantage of heat pumps such as air source and used heat water source, have the function that from air and waste water, absorbs heat simultaneously, thereby further increased effectiveness of regenerator.3, the present invention installs a temperature control system on storage tank, can make that hot water remains on certain temperature in the storage tank, has reduced the influence of temperature shock, thereby provides the hot water of equilibrium temperature and pleasant environment for use for the user.4, the present invention installs a tank level control system on storage tank, can effectively control pump capacity, can using water wisely to greatest extent under the situation that guarantees temperature.5, the present invention is provided with one and can regulates the bypass of wastewater flow in the regenerator in the backheat stream, thereby can distribute the heat of regenerator and evaporimeter, can regulate water temperature fast, controls the water temperature in the storage tank effectively, has embodied more humane advantage.6, evaporimeter of the present invention and condenser adopt the heat exchange structure of coefficient of heat transfer height such as plate-fin, fin tube type, removable board-like, whole board-like, tubulation shell-and-tube or radiator and compact conformation, compare with common pipe and not only to have improved heat exchange efficiency greatly, and compact conformation, reduce the size of heat exchanger effectively, be convenient to installation and removal.The present invention can be widely used in bathing or heat supply places such as factory, family, bath center, has very large economy and market prospects.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention
Fig. 2 is the structural representation of band bypass of the present invention
Fig. 3 is the structural representation of a plurality of spray equipments of band of the present invention
Fig. 4 is the structural representation of a plurality of evaporimeters of band of the present invention
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in detail.
As shown in Figure 1, the present invention includes refrigerating circuit 1, backheat stream 2, self circular loop 3, temperature control system 4 and tank level control system 5.Refrigerating circuit 1 comprises that one connects the closed stream that compressor 11, condenser 12, liquid-liquid heat exchange evaporimeter 13 and liquid-gas heat exchange evaporimeter 14 is formed successively by pipeline 6, and the electric expansion valve 15 of throttling action together is set on the pipeline 6 of refrigerating circuit 1.Refrigerating circuit 1 is evacuated earlier, and then the can refrigeration working medium.
Backheat stream 2 comprises an open stream that connects regenerator 21, condenser 12, storage tank 22, water pump 23 and heat water-spraying's device 24 compositions by pipeline 6 successively, comprise that also one connects the open stream that wastewater collection pond 25, water pump 26, regenerator 21 and liquid-liquid heat exchange evaporimeter 13 is formed successively by pipeline 6, the hot water of heat water-spraying's device 24 ejections enters in the wastewater collection pond 25 after using.Wherein before the regenerator 21, between water pump 23 and the heat water-spraying's device 24 and on the pipeline 6 between water pump 26 and the regenerator 21 valve 71~73 is set respectively.
Self circular loop 3 comprises that one connects the closed stream that condenser 12, storage tank 22 and water pump 23 are formed successively by pipeline 6, and a valve 74 is installed on the pipeline 6 between water pump 23 and the regenerator 21.Temperature control system 4 and tank level control system 5 are installed on the storage tank 22, and temperature control system 4 links to each other with valve 74 with compressor 11, tank level control system 5 links to each other with valve 71, is used for monitoring water temperature and liquid level in the storage tank 22 respectively, and control compressor 11 and valve 71,74 actions.
In the foregoing description, the position of liquid-liquid heat exchange evaporimeter 13 and liquid-gas heat exchange evaporimeter 14 can exchange, and promptly liquid-gas heat exchange evaporimeter 14 can be installed on the pipeline 6 between condenser 12 and the liquid-liquid heat exchange evaporimeter 13.
In the foregoing description, a drainpipe 8 can be set on the pipeline 6 between wastewater collection pond 25 and the water pump 26, and on this drainpipe 8 valve 75 be installed, this drainpipe 8 plays a role in the drainage when water heater does not drop into or needs repairing.
In the foregoing description, can a bypass 9 in parallel between wastewater collection pond 25 and liquid-liquid heat exchange evaporimeter 13, one valve 76 (as shown in Figure 2) is installed in this bypass 9, can regulate the flow of waste water in the regenerator 21 by valve 76, thereby realize the coupling of backheat and evaporation, control the water temperature in the storage tank 22 effectively, embodied more humane advantage.
In the foregoing description, the quantity in heat water-spraying's device 24 and wastewater collection pond 25 can be for more than two, and adopt the arrangement of plural parallel stage, one valve 72 (as shown in Figure 3) all is installed on the pipeline 6 before every grade of heat water-spraying's device 24 of parallel connection, thereby the hot water that makes process water pump 23 is divided into several roads and sprays, and uses simultaneously to satisfy a plurality of users.
In the foregoing description, the quantity of liquid-liquid heat exchange evaporimeter 13, liquid-gas heat exchange evaporimeter 14 and regenerator 21 can be for more than two, and adopt the mode (as shown in Figure 4) of plural serial stage, the number of liquid-liquid heat exchange evaporimeter 13, liquid-gas heat exchange evaporimeter 14 and regenerator 21 can come to determine as required, thereby further improves the heat exchange efficiency of refrigerating circuit 1 and backheat stream 2.
In the foregoing description, condenser 12, liquid-liquid heat exchange evaporimeter 13 and liquid-gas heat exchange evaporimeter 14 all adopt the heat exchange structure of coefficient of heat transfer height such as plate-fin, fin tube type, removable board-like, whole board-like or tubulation shell-and-tube and compact conformation, compare with common pipe and not only to have improved heat exchange efficiency greatly, and compact conformation, reduce the size of heat exchanger effectively, be convenient to installation and removal.
Operation principle of the present invention is the heat that refrigeration working medium process liquid-liquid heat exchange evaporimeter 13 absorbs in the waste water in the refrigerating circuit 1, the refrigeration working medium temperature raises, pass through liquid-gas heat exchange evaporimeter 14 again, from air, absorb the steam that heat becomes high temperature and enter compressor 11.In compressor 11, the steam of high temperature absorbs compressor 11 liberated heats simultaneously through overcompression, becomes high-temperature fluid, in condenser 12 heat is passed to towards the running water of storage tank 22, and the temperature reduction enters electric expansion valve 15.In backheat stream 2, when heat water-spraying's device 24 does not start (valve 72 is closed), running water enters regenerator 21 (this moment, running water did not absorb heat in regenerator 21) through valve 71, enters condenser 12 then and absorbs heat, enters storage tank 22 in order to using.If the water temperature in the storage tank 22 does not reach instructions for use, then temperature control system 4 is opened the valve 74 in the self circular loop 3, simultaneous temperature control system 4 control compressors 11 operating frequencies raise, water in the storage tank 22 is got back to once more in the condenser 12 and is absorbed heat, make temperature continue to raise, and enter storage tank 22 once more until reaching instructions for use.When heat water-spraying's device 24 starts (valve 72 is opened), after being used, hot water in the storage tank 22 enters wastewater collection pond 25, when the waste water in the wastewater collection pond 25 arrives when a certain amount of, then open valve 73, the waste water in the wastewater collection pond 25 is pumped into after regenerator 21 and liquid-liquid heat exchange evaporimeter 13 heat exchange successively by water pump 26 discharge (this moment, running water absorbed heat from regenerator 21).When liquid level was higher than design water level in the storage tank 22, tank level control system 5 by-pass valve controls 71 were closed, and the water in the storage tank 22 continues the circulation heating; Liquid level is lower than design water level in storage tank 22, and tank level control system 5 by-pass valve controls 71 are opened, and running water in time replenishes.
The present invention only describes with the foregoing description; the structure of each parts, the position is set and connects and all can change to some extent; on the basis of technical solution of the present invention; all improvement and equivalents of individual component being carried out according to the principle of the invention all should not got rid of outside protection scope of the present invention.

Claims (11)

1. circulation heat recovery heat pump type water heater, it is characterized in that: it comprises refrigerating circuit, backheat stream and self circular loop, described refrigerating circuit comprises a closed stream that connects compressor, condenser, liquid-liquid heat exchange evaporimeter and liquid-gas heat exchange evaporimeter composition by pipeline successively, described refrigerating circuit is evacuated earlier, and then the can refrigeration working medium;
Described backheat stream comprises an open stream that connects regenerator, described condenser, storage tank, first water pump and heat water-spraying's device composition by pipeline successively, comprise that also one connects the open stream that wastewater collection pond, second water pump, described regenerator and described liquid-liquid heat exchange evaporimeter are formed successively by pipeline, the hot water of described heat water-spraying's device ejection enters in the described wastewater collection pond after using; Wherein before the described regenerator, between described first water pump and the heat water-spraying's device and first to the 3rd valve is set on the pipeline between second water pump and the regenerator respectively;
Described self circular loop comprises that one connects the closed stream that described condenser, described storage tank and described first water pump are formed successively by pipeline, and the 4th valve is installed on the pipeline between described first water pump and the regenerator.
2. a kind of circulation heat recovery heat pump type water heater as claimed in claim 1, it is characterized in that: temperature control system and tank level control system are installed on the described storage tank, and described temperature control system links to each other with the 4th valve with described compressor, described tank level control system links to each other with described first valve, be used for monitoring water temperature and liquid level in the described storage tank respectively, and control described compressor and described the first, the 4th valve event.
3. a kind of circulation heat recovery heat pump type water heater as claimed in claim 1 is characterized in that: the electric expansion valve of throttling action together is set on the pipeline of described refrigerating circuit.
4. a kind of circulation heat recovery heat pump type water heater as claimed in claim 2 is characterized in that: the electric expansion valve of throttling action together is set on the pipeline of described refrigerating circuit.
5. as claim 1 or 2 or 3 or 4 described a kind of circulation heat recovery heat pump type water heaters, it is characterized in that: the position of described liquid-liquid heat exchange evaporimeter and liquid-gas heat exchange evaporimeter can exchange.
6. as claim 1 or 2 or 3 or 4 described a kind of circulation heat recovery heat pump type water heaters, it is characterized in that: on the pipeline between the described wastewater collection pond and second water pump, a drainpipe is set, and on described drainpipe, the 5th valve is installed.
7. a kind of circulation heat recovery heat pump type water heater as claimed in claim 5 is characterized in that: on the pipeline between the described wastewater collection pond and second water pump drainpipe is set, and on described drainpipe the 5th valve is installed.
8. as the described a kind of circulation heat recovery heat pump type water heater of claim 1~7, it is characterized in that: a bypass in parallel between described wastewater collection pond and liquid-liquid heat exchange evaporimeter is equipped with the 6th valve in the described bypass.
9. as the described a kind of circulation heat recovery heat pump type water heater of claim 1~8, it is characterized in that: the quantity in described heat water-spraying's device and wastewater collection pond is more than two, and adopt the arrangement of plural parallel stage, on the pipeline before every grade of described heat water-spraying's device of parallel connection described second valve is installed all.
10. as the described a kind of circulation heat recovery heat pump type water heater of claim 1~9, it is characterized in that: the quantity of described liquid-liquid heat exchange evaporimeter, liquid-gas heat exchange evaporimeter and regenerator is more than two, and adopts the mode of plural serial stage.
11. as the described a kind of circulation heat recovery heat pump type water heater of claim 1~10, it is characterized in that: described condenser, liquid-liquid heat exchange evaporimeter and liquid-gas heat exchange evaporimeter all adopts plate-fin, fin tube type, removable board-like, whole board-like or tubulation shell-and-tube heat exchange structure.
CN200910261703A 2009-12-28 2009-12-28 Circulation heat recovery heat pump type water heater Pending CN101749860A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101900416A (en) * 2010-08-06 2010-12-01 江苏天舒电器有限公司 Constant-temperature variable energy-saving water heater
CN102410627A (en) * 2010-09-20 2012-04-11 喻新程 Cooling water heater
CN104406330A (en) * 2014-11-29 2015-03-11 江门市达能环保节能科技有限公司 Heat pump system capable of recycling both gas and wastewater waste heat
CN105222342A (en) * 2015-10-30 2016-01-06 江门市达能环保节能科技有限公司 Enhanced heat exchange formula heat pump
CN105222341A (en) * 2015-10-30 2016-01-06 江门市达能环保节能科技有限公司 A kind of heat pump hot-water system with two kinds of heat exchange modes
CN105890166A (en) * 2016-05-31 2016-08-24 武汉崇文新科技有限公司 Kitchen heat energy recycling system
CN107305064A (en) * 2016-04-21 2017-10-31 北京青鸾科技有限责任公司 I.e. hot continuous schedule high energy acting type Teat pump boiler
CN109974074A (en) * 2019-03-29 2019-07-05 福建工程学院 A kind of publilc baths residual neat recovering system and its control method
CN110806328A (en) * 2019-11-21 2020-02-18 青岛大学 Desktop type self-supply water heat exchanger performance testing device
CN113048648A (en) * 2021-05-19 2021-06-29 大连理工大学 Machine-pump combined-drive enthalpy-increasing type working medium side waste heat recovery air source heat pump hot water unit for bathing

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101900416A (en) * 2010-08-06 2010-12-01 江苏天舒电器有限公司 Constant-temperature variable energy-saving water heater
CN101900416B (en) * 2010-08-06 2012-07-04 江苏天舒电器有限公司 Constant-temperature variable energy-saving water heater
CN102410627A (en) * 2010-09-20 2012-04-11 喻新程 Cooling water heater
CN102410627B (en) * 2010-09-20 2013-09-04 喻新程 Cooling water heater
CN104406330A (en) * 2014-11-29 2015-03-11 江门市达能环保节能科技有限公司 Heat pump system capable of recycling both gas and wastewater waste heat
CN105222341A (en) * 2015-10-30 2016-01-06 江门市达能环保节能科技有限公司 A kind of heat pump hot-water system with two kinds of heat exchange modes
CN105222342A (en) * 2015-10-30 2016-01-06 江门市达能环保节能科技有限公司 Enhanced heat exchange formula heat pump
CN107305064A (en) * 2016-04-21 2017-10-31 北京青鸾科技有限责任公司 I.e. hot continuous schedule high energy acting type Teat pump boiler
CN105890166A (en) * 2016-05-31 2016-08-24 武汉崇文新科技有限公司 Kitchen heat energy recycling system
CN109974074A (en) * 2019-03-29 2019-07-05 福建工程学院 A kind of publilc baths residual neat recovering system and its control method
CN110806328A (en) * 2019-11-21 2020-02-18 青岛大学 Desktop type self-supply water heat exchanger performance testing device
CN110806328B (en) * 2019-11-21 2021-04-20 青岛大学 Desktop type self-supply water heat exchanger performance testing device
CN113048648A (en) * 2021-05-19 2021-06-29 大连理工大学 Machine-pump combined-drive enthalpy-increasing type working medium side waste heat recovery air source heat pump hot water unit for bathing
CN113048648B (en) * 2021-05-19 2022-03-04 大连理工大学 Combined-drive enthalpy-increasing working medium side waste heat recovery air source heat pump bathing hot water unit of machine pump

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Application publication date: 20100623