CN101871690A - Single and double level water-source heat pump water heater coupling device and method - Google Patents
Single and double level water-source heat pump water heater coupling device and method Download PDFInfo
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- CN101871690A CN101871690A CN 201010210385 CN201010210385A CN101871690A CN 101871690 A CN101871690 A CN 101871690A CN 201010210385 CN201010210385 CN 201010210385 CN 201010210385 A CN201010210385 A CN 201010210385A CN 101871690 A CN101871690 A CN 101871690A
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- Y02B30/12—Hot water central heating systems using heat pumps
Abstract
The invention relates to a single and double level water-source heat pump water heater coupling device and method for preparing hot water, relating to a single and double level water-source heat pump water heater coupling system for preparing heating or living hot water in a wider environmental water source temperature range. The hot water preparing circulation of the device comprises two independently operated single level compression heat pump circulations and a double level compression heat pump circulation system coupled by two single level compression heat pump circulations. When the temperature of the environmental water source is higher, two independently operated single level compression heat pump circulations are adopted to provide hot water; and when the temperature of the environmental water source is lower, in order to ensure the temperature of the hot water supplied, two single level vapor compression heat pump circulations are coupled to a double level pump circulation. Therefore, hot water supply temperature in a wider temperature scale of water source temperature can be ensured, and the system is simpler than other hot water preparation circulation, simple and convenient to operate and has reduced device production cost in work condition of lower environmental water source temperature.
Description
Technical field
The present invention relates to a kind of single double level water-source heat pump water heater coupled system, be used in the environmental water systems temperature range of broad, producing heating or domestic hot-water.
Background technology
Along with improving constantly of expanding economy and living standards of the people, people are to the also corresponding raising of the level of material and cultural needs, demand to hot water increases rapidly, the health hot water energy consumption accounts for 10%～40% of various commercial building energy consumption proportion, account for 20%～30% of civil buildings energy consumption proportion, energy-conservation is the eternal theme of heat pump water-heating machine development.Heat pump water-heating machine adopts the vapor compression heat pump technology, range of application from little to family, greatly to civilian, commercial places such as centralized hot water engineerings.Because of it has energy-conservation, safety, environmental protection, economy and technology and commercial advantage such as is widely used, heat pump water-heating machine at home and abroad market has wide development space and application prospect.It is significant to the energy-conservation and environmental protection of entire society to design energy-efficient heat pump water-heating machine.
China's national Specification source heat pump water heater nominal condition, the initial water temperature is 15 ℃, stops 55 ℃ of water temperatures.In existing source heat pump water heater, generally under nominal condition, can reach the regulation leaving water temperature.But because the environmental water systems temperature is in the variation throughout the year, when the environmental water systems temperature is low (winter), the one-stage steam compressed formula heat pump water-heating machine of warm cold-producing medium does not often reach the termination coolant-temperature gage (55 ℃) of GB regulation in the employing.For solving this difficult problem, the general employing changed cold-producing medium (as CO
2), or adopt the overlapping heating recycle system.CO so
2System is comparatively huge, makes and the operating cost height.The overlapping heating is complicated, and it is also high to consume energy.
Summary of the invention
Technical problem: the objective of the invention is at the deficiencies in the prior art, a kind of single double level water-source heat pump water heater coupling device that is used to produce hot water is proposed, this system simplification the superposition type heating, need not change cold-producing medium yet, the hot water that uses compression type heat pumping system commonly used can reach regulation stops coolant-temperature gage, widen the temperature range of compression heat pump heat-obtaining, reduced manufacturing and operating cost.
Technology contents: but the water circulation that heats of single double level water-source heat pump water heater coupling device of the present invention comprises the single stage compress heat pump cycle of two independent operatings and is coupled as a twin-stage compressing hot pump circulatory system by two single stage compress heat pump cycles; The hot water water inlet end of this device and hot water effluent's end connect the water inlet end and the water side of first condenser, second condenser respectively, and environmental water systems water inlet end and environmental water systems backwater end connect the water inlet end and the water side of first flooded evaporator, second flooded evaporator respectively; The outlet end of feed liquor termination first flooded evaporator of first compressor, the fluid termination first condenser liquid feeding end of first compressor, the outlet end of feed liquor termination second flooded evaporator of second compressor, the liquid feeding end of fluid termination second condenser of second compressor; The outlet end of first compressor is connected by the 4th magnetic valve with the liquid feeding end of first flooded evaporator; The outlet end of second condenser connects the liquid feeding end of second flooded evaporator by second magnetic valve, second device for drying and filtering, second liquid-sighting glass, second electric expansion valve that is in series, and the outlet end of first condenser connects the liquid feeding end of first flooded evaporator by first magnetic valve, first device for drying and filtering, first liquid-sighting glass, first electric expansion valve that is in series; The 3rd magnetic valve is connected between second flooded evaporator and first device for drying and filtering.
The coupling process of the single double level water-source heat pump water heater coupling device of the present invention adopts circulation of twin-stage compressing hot pump and single stage compress heat pump cycle to switch each other, open and close the switching that is coupled by waterway electromagnetic valve, refrigerant circulation loop magnetic valve, its method specifically:
When as the single stage compress heat pump cycle of two independent operatings, the 5th magnetic valve in water route, the 6th magnetic valve are opened, and first magnetic valve of refrigerant circulation loop, second magnetic valve are opened the 3rd magnetic valve, the 4th closed electromagnetic valve; The refrigerant gas that first compressor comes out first condenser heat release of flowing through is condensed into refrigerant liquid, the water side supplies water and is heated simultaneously, refrigerant liquid is again after first magnetic valve, first device for drying and filtering, first liquid-sighting glass, first electric expansion valve, the first flooded evaporator absorbing environmental water source heat of vaporization, enter first compressor again, constitute a single stage compress heat pump cycle; The circulation of another single stage compress then is: the refrigerant gas that second compressor comes out second condenser heat release of flowing through is condensed into refrigerant liquid, the water side supplies water and is heated simultaneously, refrigerant liquid is again after second magnetic valve, second device for drying and filtering, second liquid-sighting glass, second electric expansion valve, the second flooded evaporator absorbing environmental water source heat of vaporization, enter second compressor again, finish the single stage compress heat pump cycle;
When as twin-stage compressing hot pump circulation time, water route the 5th magnetic valve, the 6th closed electromagnetic valve, refrigerant circulation loop first closed electromagnetic valve, second magnetic valve, the 3rd magnetic valve, the 4th magnetic valve are opened; The refrigerant gas that first compressor comes out mixes with the second electric expansion valve throttling shwoot and the gas after second flooded evaporator separates through the 4th magnetic valve, entering second compressor again compresses, the second condenser heat release of flowing through of cold-producing medium gases at high pressure after the compression is condensed into refrigerant liquid, and the water side supplies water and is heated simultaneously; Refrigerant liquid enters second flooded evaporator after second magnetic valve, second device for drying and filtering, second liquid-sighting glass, the second electric expansion valve throttling, gas-liquid separation in second flooded evaporator, the exhaust of the isolated refrigerant gas and first compressor is mixed into second compressor, refrigerant liquid after the separation enters first flooded evaporator after the 3rd magnetic valve, first device for drying and filtering, first liquid-sighting glass, the first electric expansion valve throttling, enter first compressor again after the absorbing environmental water source heat of vaporization, finish the circulation of twin-stage compressing hot pump.
Second flooded evaporator uses as evaporimeter when single stage compress, uses and serve as twin-stage compression intergrade reservoir when being coupled as the twin-stage compressibility, makes system simplification and reliable.
The environmental water systems low temperature backwater that obtains behind the evaporimeter of flowing through can also be realized the multifunctional comprehensive utilization of the cold and heat combined supply of unit as the chilled water that generally closes with awkward silence at a meeting.
Be used to produce single double level water-source heat pump water heater coupling device of hot water, when the environmental water systems higher temperature, adopt the single stage compress heat pump of two independent operatings to provide heat, strengthened the hot water supply, and can just carry out the unit heating capacity and partly regulate with the mode of start and stop for condenser; And when the environmental water systems temperature is low, the single stage compress heat pump of two independent operatings is coupled as a twin-stage compressing hot pump circulatory system, widen the temperature range of heat pump heat-obtaining, made under lower ambient temperature conditions, also can produce and reach the coolant-temperature gage that send of regulation.
Beneficial effect: the present invention adopts and produces hot water by single twin-stage compressing hot pump system, coupled, when the higher operating mode of environmental water systems temperature, adopt the heat supply of two single stage compress heat pump cycles, both can strengthen the hot water supply of water resource heat pump, and can carry out part to the unit heating load according to the actual requirements again and regulate; When environmental water systems hangs down operating mode, the single stage compress heat pump cycle is coupled as the circulation of twin-stage compressing hot pump and produces hot water, not only satisfy hot water is provided in the environmental water systems wide temperature range safely and reliably, and system adopts the overlapping circulation to simplify, and needn't change cold-producing medium, make the device fabrication cost reduce, easy and simple to handle energy-conservation.
Description of drawings
The present invention is further described below in conjunction with drawings and embodiments.
Fig. 1 is used for single double level water-source heat pump water heater coupled system to heat water circulation process figure.
Wherein have: first flooded evaporator 1, second flooded evaporator 8, first compressor 2, second compressor 9, first condenser 3, second condenser 10, first magnetic valve 4, second magnetic valve 11, the 3rd magnetic valve 15, the 4th magnetic valve 16, the 5th magnetic valve 17, the 6th magnetic valve 18, first device for drying and filtering 5, second device for drying and filtering 12, first liquid-sighting glass 6, second liquid-sighting glass, 13, the first electric expansion valves 7, second electric expansion valve 14.
Fig. 2 is single stage compress source heat pump water heater heat pump cycle lgp-h figure.
Fig. 3 is twin-stage pressurized water source heat pump hot water heat pump cycle lgp-h figure.
The specific embodiment
As shown in fig. 1, but this list double level water-source heat pump water heater coupling device by the single stage compress heat pump cycle of two independent operatings be coupled as a twin-stage compressing hot pump circulatory system by two single stage compress heat pump cycles and form.But this device heats the water circulation to be comprised the single stage compress heat pump cycle of two independent operatings and is coupled as a twin-stage compressing hot pump circulatory system by two single stage compress heat pump cycles; The hot water water inlet end of this device and hot water effluent's end connect the water inlet end and the water side of first condenser 3, second condenser 10 respectively, and environmental water systems water inlet end and environmental water systems backwater end connect the water inlet end and the water side of first flooded evaporator 1, second flooded evaporator 8 respectively; The outlet end of feed liquor termination first flooded evaporator 1 of first compressor 2, fluid termination first condenser 3 liquid feeding ends of first compressor 2, the outlet end of feed liquor termination second flooded evaporator 8 of second compressor 9, the liquid feeding end of fluid termination second condenser 10 of second compressor 9; The outlet end of first compressor 2 is connected by the 4th magnetic valve 16 with the liquid feeding end of first flooded evaporator 1; The outlet end of second condenser 10 connects the liquid feeding end of second flooded evaporator 8 by second magnetic valve 11, second device for drying and filtering 12, second liquid-sighting glass 13, second electric expansion valve 14 that is in series, and the outlet end of first condenser 3 connects the liquid feeding end of first flooded evaporator 1 by first magnetic valve 4, first device for drying and filtering 5, first liquid-sighting glass 6, first electric expansion valve 7 that is in series; The 3rd magnetic valve 15 is connected between second flooded evaporator 8 and first device for drying and filtering 5.
One, under the higher situation of environmental water systems temperature, two single stage compress heat pump cycle independent operatings are produced hot water
Water route the 5th magnetic valve 17, the 6th magnetic valve 18 are opened, and refrigerant circulation loop first magnetic valve 4, second magnetic valve 11 are opened, and the 3rd magnetic valve 15, the 4th magnetic valve 16 are closed,
The environmental water systems loop: the ambient water parallel connection enters first flooded evaporator 1 and second flooded evaporator 8, backwater after the heat release.
Heat water loop: the hot water parallel connection is sent water after entering first condenser 3,10 heat absorptions of second condenser.
Refrigerant loop: refrigerant gas that first compressor 2 comes out stream first enters first compressor 2 again through condenser 3, first magnetic valve 4, first device for drying and filtering 5, first liquid-sighting glass 6, first electric expansion valve 7, first flooded evaporator 1, constitutes a single stage compress heat pump cycle; Another circulation then is: flow through second condenser 10, second magnetic valve 11, second device for drying and filtering 12, second liquid-sighting glass 13, second electric expansion valve 14, second flooded evaporator 8 of the refrigerant gas that second compressor 9 comes out enters second compressor 9 again, finishes the single stage compress heat pump cycle.
Heat pump water-heating machine single stage compress heat pump cycle represents as shown in Figure 2 that on 1gp-h figure cold-producing medium recurrent state point is expressed with bracket in the drawings.When the higher operating mode of environmental water systems temperature, evaporating temperature is T
01, condensation temperature is T
k, adopt the single stage compress heat pump cycle can produce the termination hot water of GB set point of temperature (55 ℃).
Two, under the low situation of environmental water systems temperature, two single stage compress circulations are coupled as the circulation of twin-stage compressing hot pump and produce hot water
Water route the 5th magnetic valve 17, the 6th magnetic valve 18 are closed, and refrigerant circulation loop first magnetic valve 4 cuts out, and second magnetic valve 11, the 3rd magnetic valve 15, the 4th magnetic valve 16 are opened,
The environmental water systems loop: ambient water only enters first flooded evaporator 1, backwater after the heat release.
Heat water loop: hot water send water after only entering 10 heat absorptions of second condenser.
Refrigerant loop: the refrigerant gas that first compressor 2 comes out mixes with second electric expansion valve, 14 throttling shwoots and the gas after second flooded evaporator 8 (this evaporimeter uses as the intergrade reservoir in the double stage heat pump circulation) separates through the 4th magnetic valve 16, entering second compressor 9 again compresses, second condenser, 10 heat releases of flowing through of cold-producing medium gases at high pressure after the compression are condensed into refrigerant liquid, and the water side supplies water and is heated simultaneously.Refrigerant liquid is again through second magnetic valve 11, second device for drying and filtering 12, second liquid-sighting glass 13, enter second flooded evaporator 8 after 14 throttlings of second electric expansion valve, gas-liquid separation in second flooded evaporator 8, the exhaust of the isolated refrigerant gas and first compressor 2 is mixed into second compressor 9, refrigerant liquid after the separation is through the 3rd magnetic valve 15, first device for drying and filtering 5, first liquid-sighting glass 6, enter first flooded evaporator 1 after 7 throttlings of first electric expansion valve, the refrigerant gas in first flooded evaporator 1 after the absorbing environmental water source heat of vaporization enters first compressor 2 again.
Heat pump water-heating machine twin-stage compressing hot pump circulates on the lgp-h figure to be represented as shown in Figure 3.In the environmental water systems temperature when lower (winter), evaporating temperature T
02＜T
01(annotate: T
01For producing 55 ℃ of minimum evaporating temperatures that hot water is required in the single stage compress), condensation temperature is T
kUnder this operating mode, adopt single stage compress heat pump cycle compressor pressure ratio excessive, therefore, can't make temperature required (55 ℃) hot water, and adopt the condensation temperature of twin-stage compression raising the second condenser 10, can reach and produce GB and stipulate the hot water temperature.
Claims (4)
1. single double level water-source heat pump water heater coupling device, but it is characterized in that this device heats the water circulation and comprises the single stage compress heat pump cycle of two independent operatings and be coupled as a twin-stage compressing hot pump circulatory system by two single stage compress heat pump cycles; The hot water water inlet end of this device and hot water effluent's end connect the water inlet end and the water side of first condenser (3), second condenser (10) respectively, and environmental water systems water inlet end and environmental water systems backwater end connect the water inlet end and the water side of first flooded evaporator (1), second flooded evaporator (8) respectively; The outlet end of feed liquor termination first flooded evaporator (1) of first compressor (2), fluid termination first condenser (3) liquid feeding end of first compressor (2), the outlet end of feed liquor termination second flooded evaporator (8) of second compressor (9), the liquid feeding end of fluid termination second condenser (10) of second compressor (9); The outlet end of first compressor (2) is connected by the 4th magnetic valve (16) with the liquid feeding end of first flooded evaporator (1); The outlet end of second condenser (10) connects the liquid feeding end of second flooded evaporator (8) by second magnetic valve (11), second device for drying and filtering (12), second liquid-sighting glass (13), second electric expansion valve (14) that is in series, and the outlet end of first condenser (3) connects the liquid feeding end of first flooded evaporator (1) by first magnetic valve (4), first device for drying and filtering (5), first liquid-sighting glass (6), first electric expansion valve (7) that is in series; The 3rd magnetic valve (15) is connected between second flooded evaporator (8) and first device for drying and filtering (5).
2. the coupling process of a single double level water-source heat pump water heater coupling device as claimed in claim 1, it is characterized in that this method adopts circulation of twin-stage compressing hot pump and single stage compress heat pump cycle to switch each other, open and close the switching that is coupled by waterway electromagnetic valve, refrigerant circulation loop magnetic valve, its method specifically:
When as the single stage compress heat pump cycle of two independent operatings, the 5th magnetic valve (17) in water route, the 6th magnetic valve (18) are opened, first magnetic valve (4) of refrigerant circulation loop, second magnetic valve (11) are opened, and the 3rd magnetic valve (15), the 4th magnetic valve (16) are closed; The refrigerant gas that first compressor (2) comes out first condenser (3) heat release of flowing through is condensed into refrigerant liquid, the water side supplies water and is heated simultaneously, refrigerant liquid is again after first magnetic valve (4), first device for drying and filtering (5), first liquid-sighting glass (6), first electric expansion valve (7), first flooded evaporator (1) absorbing environmental water source heat of vaporization, enter first compressor (2) again, constitute a single stage compress heat pump cycle; The circulation of another single stage compress then is: the refrigerant gas that second compressor (9) comes out second condenser (10) heat release of flowing through is condensed into refrigerant liquid, the water side supplies water and is heated simultaneously, refrigerant liquid is again after second magnetic valve (11), second device for drying and filtering (12), second liquid-sighting glass (13), second electric expansion valve (14), second flooded evaporator (8) absorbing environmental water source heat of vaporization, enter second compressor (9) again, finish the single stage compress heat pump cycle;
When as twin-stage compressing hot pump circulation time, water route the 5th magnetic valve (17), the 6th magnetic valve (18) are closed, and refrigerant circulation loop first magnetic valve (4) cuts out, and second magnetic valve (11), the 3rd magnetic valve (15), the 4th magnetic valve (16) are opened; The refrigerant gas that first compressor (2) comes out mixes with second electric expansion valve (14) throttling shwoot and the gas after second flooded evaporator (8) separates through the 4th magnetic valve (16), entering second compressor (9) again compresses, second condenser (10) heat release of flowing through of cold-producing medium gases at high pressure after the compression is condensed into refrigerant liquid, and the water side supplies water and is heated simultaneously; Refrigerant liquid is through second magnetic valve (11), second device for drying and filtering (12), second liquid-sighting glass (13), enter second flooded evaporator (8) after second electric expansion valve (14) throttling, gas-liquid separation in second flooded evaporator (8), the exhaust of isolated refrigerant gas and first compressor (2) is mixed into second compressor (9), refrigerant liquid after the separation is through the 3rd magnetic valve (15), first device for drying and filtering (5), first liquid-sighting glass (6), enter first flooded evaporator (1) after first electric expansion valve (7) throttling, enter first compressor (2) after the absorbing environmental water source heat of vaporization again, finish the circulation of twin-stage compressing hot pump.
3. the coupling process of single double level water-source heat pump water heater coupling device as claimed in claim 1, it is characterized in that, second flooded evaporator (8) uses as evaporimeter when single stage compress, use and serve as twin-stage compression intergrade reservoir when being coupled as the twin-stage compressibility, make system simplification and reliable.
4. the coupling process of single double level water-source heat pump water heater coupling device as claimed in claim 1, it is characterized in that, the environmental water systems low temperature backwater that obtains behind the evaporimeter of flowing through can also be realized the multifunctional comprehensive utilization of the cold and heat combined supply of unit as the chilled water that generally closes with awkward silence at a meeting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010210385 CN101871690B (en) | 2010-06-24 | 2010-06-24 | Single and double level water-source heat pump water heater coupling device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010210385 CN101871690B (en) | 2010-06-24 | 2010-06-24 | Single and double level water-source heat pump water heater coupling device and method |
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| CN101871690A true CN101871690A (en) | 2010-10-27 |
| CN101871690B CN101871690B (en) | 2012-08-22 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563784A (en) * | 2010-12-30 | 2012-07-11 | Lg电子株式会社 | Heat pump interoperating hot water feeding apparatus |
| CN104180548A (en) * | 2014-08-18 | 2014-12-03 | 上海理工大学 | Cascade refrigerating system |
| CN104676940A (en) * | 2015-01-14 | 2015-06-03 | 宁波赛西电器有限公司 | Double-stage compressed air source heat pump system |
| CN104833087A (en) * | 2015-04-30 | 2015-08-12 | 南京理工大学 | Cascading middle and high-temperature air source heat pump hot water machine set |
| CN107906786A (en) * | 2017-12-25 | 2018-04-13 | 华北理工大学 | The coupled system of medically low temperature environment is produced based on double stage heat pump and autocascade cycle |
| CN110173735A (en) * | 2019-05-20 | 2019-08-27 | 上海电力学院 | Self-feedback heating system is coupled using the water resource heat pump front and rear of circulating water afterheat |
| CN110186189A (en) * | 2019-07-02 | 2019-08-30 | 珠海冰恬环境科技有限公司 | A kind of residual heat type combined high temperature heat-pump hot-water energy conserving system and its control method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563784A (en) * | 2010-12-30 | 2012-07-11 | Lg电子株式会社 | Heat pump interoperating hot water feeding apparatus |
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| CN104676940B (en) * | 2015-01-14 | 2017-04-05 | 宁波赛森节能设备有限公司 | A kind of Two-stage Compression air source heat pump system |
| CN104833087A (en) * | 2015-04-30 | 2015-08-12 | 南京理工大学 | Cascading middle and high-temperature air source heat pump hot water machine set |
| CN104833087B (en) * | 2015-04-30 | 2017-09-29 | 南京理工大学 | Superposition type high temperature air friction drag |
| CN107906786A (en) * | 2017-12-25 | 2018-04-13 | 华北理工大学 | The coupled system of medically low temperature environment is produced based on double stage heat pump and autocascade cycle |
| CN107906786B (en) * | 2017-12-25 | 2023-06-30 | 华北理工大学 | Coupling system for preparing medical low-temperature environment based on two-stage heat pump and cascade circulation |
| CN110173735A (en) * | 2019-05-20 | 2019-08-27 | 上海电力学院 | Self-feedback heating system is coupled using the water resource heat pump front and rear of circulating water afterheat |
| CN110186189A (en) * | 2019-07-02 | 2019-08-30 | 珠海冰恬环境科技有限公司 | A kind of residual heat type combined high temperature heat-pump hot-water energy conserving system and its control method |
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|---|---|
| CN101871690B (en) | 2012-08-22 |
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