CN201003885Y - Air source thermal pump water heater unit - Google Patents

Air source thermal pump water heater unit Download PDF

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Publication number
CN201003885Y
CN201003885Y CNU2007200172412U CN200720017241U CN201003885Y CN 201003885 Y CN201003885 Y CN 201003885Y CN U2007200172412 U CNU2007200172412 U CN U2007200172412U CN 200720017241 U CN200720017241 U CN 200720017241U CN 201003885 Y CN201003885 Y CN 201003885Y
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CN
China
Prior art keywords
hot water
air
heat exchanger
temperature
controller
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Expired - Lifetime
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CNU2007200172412U
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Chinese (zh)
Inventor
沙凤歧
葛建民
赵铁军
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葛建民
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Priority to CNU2007200172412U priority Critical patent/CN201003885Y/en
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Abstract

The utility model discloses an air source heat pump water heater, the main technical point being: at least two compressors are connected parallel with each other and with a first temperature sensor, a pressure sensor and a first controller; the first controller is provided with a first controlling circuit which compares the temperature signals sent by the first temperature sensor with the setting figure of the environmental temperature and turns on the corresponding compressor according to the result of the comparison, and provided with a second controlling circuit which compares the pressure signals detected by the pressure sensor with the setting figure of the pressure and controls the revolving speed of the blower according to the result of the comparison. The utility model fundamentally solves the problem that in winter and summer the amount of hot water needed by the users dose not conform to the amount of heat produced by the heater and guarantees the safe and reliable performance of the compressor through the adjustment in the input wind of the blower. Besides, thanks to the arrangement of a connecting air duct and a cool water recycling device so as to recycle the amount of unused coolness, the utilization ratio of the water heater is improved and the energy consumption at the home of the user is reduced.

Description

The air-source heat pump hot water group
Technical field
The utility model relates to the air source heat pump technical field, relates in particular to a kind of hot water unit that heats water with air source heat pump.
Background technology
Air source heat pump is a kind ofly can obtain low grade heat energy from natural air, through the electric power acting, is output as the equipment of the high-grade heat energy that can use.The Carnot cycle principle is adopted in its work, and the concrete course of work is: the gaseous state refrigeration working medium of discharging HTHP after the compressor operating; The gaseous state refrigeration working medium of this HTHP after cross valve enters the condenser release heat, the liquid of warm high pressure in becoming; The liquid refrigerating working medium of warm high pressure becomes the liquid of low-temp low-pressure through the throttling step-down of device for drying and filtering, liquid-sighting glass and expansion valve in being somebody's turn to do, and evaporates by absorbing airborne heat in evaporimeter through liquid-dividing head again, becomes the gas of low-temp low-pressure; The gas refrigeration working medium of this low-temp low-pressure flows back to the compressor air suction mouth, finishes a working cycles.
Known air source heat pump, its refrigeration working medium need carry out forced heat-exchanging by blower fan in the process of evaporimeter of flowing through.Because the air quantity of the wind field that blower fan produces immobilizes, when summer, outdoor environment temperature was higher, evaporating temperature and evaporating pressure when refrigeration working medium evaporates in evaporimeter are all higher, are easy to exceed the normal range of operation of compressor, bring potential safety hazard for the normal operation of compressor; And when winter, outdoor environment temperature was low, evaporating temperature and evaporating pressure were lower again when refrigeration working medium evaporated in evaporimeter, and the heating capacity of compressor is also low.On the other hand, if environment temperature is low excessively, the refrigeration working medium in the evaporimeter can not get sufficient evaporation, when being inhaled into compressor, is easy to generate the liquid hammer accident, and causes component wear and aging.
The air-source heat pump hot water group is when summer operation, because outdoor environment temperature is higher, and the pressure of inspiration(Pi) height of compressor, the heating capacity of unit is big, and the hot water amount that summer, the user needed is few than winter, causes the idle of compressor compresses ability; When moving in the winter time, because outdoor environment temperature is lower, the pressure of inspiration(Pi) of compressor is low, and the heating capacity of unit is little, and the hot water amount that winter, the user needed is many than summer, and this moment, the problem that can not meet consumers' demand appearred again in the compressed capability of compressor.For solving this contradiction, common air-source heat pump hot water group adopts the mode that increases electric heating device in addition usually, when promptly the unit heating capacity is not enough in the winter time, solves by the way of opening electric heating device.But electric heating device efficient is low, wastes energy, and is also uneconomical concerning the user.
The air-source heat pump hot water group is to produce the equipment of hot water by absorbing airborne heat.Unit as drive energy, adopts contrary Carnot cycle principle with electric energy, and heat energy in air is collected, and together arranges to required hot water together with the heat energy that drives the electric energy conversion, and the temperature of hot water is raise, and reaches the required requirement of user.As from the foregoing, unit will inevitably make the temperature of air reduce in the process that absorbs the air heat, produces the air that is lower than environment temperature, and common air-source heat pump hot water group all is that this part cold air is directly arranged space towards periphery usually, has wasted.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of air-source heat pump hot water group is provided, during with solution winter, summer operation, the hot water amount that the user needs and the unmatched problem of heating capacity of unit, this hot water generatine set heat efficiency height, use cost is low, and is safe and reliable to operation.
For solving the problems of the technologies described above, the technical solution of the utility model is: the air-source heat pump hot water group, comprise the gas compression unit, with first heat exchanger that can carry out heat exchange with outdoor air, with the blower fan that can around the heat exchange surface of described first heat exchanger, produce wind field, with second heat exchanger that can carry out heat exchange with user's hot water, with the hot water circulating device that is connected with described second heat exchanger, described gas compression unit, first heat exchanger and second heat exchanger correspondingly link together by cross valve, described air compression unit comprises two compressors at least, and the air intake duct of described these compressors and blast pipe are in parallel respectively; It also comprises first temperature sensor of detectable environment temperature and the pressure sensor and first controller of detectable compressor air suction pressure; The input of described first controller is electrically connected with first temperature sensor and pressure sensor respectively, the output of described first controller is electrically connected with blower fan and compressor respectively, described first controller is provided with the temperature signal that first temperature sensor can be detected and the environment temperature setting value compares and make corresponding compressor enter the first control circuit and the pressure signal that pressure sensor can be detected of opening and pressure set points compares and according to the second control circuit of comparative result system control rotation speed of fan according to comparative result.
As a kind of improvement, it also comprises new bellows, and is connected the air channel between the air outlet of the air inlet that is removably connected to described new bellows and described first heat exchanger; With with described second heat exchanger cooling water circulating device that be connected and in parallel with described hot water circulating device, with second temperature sensor that can detect hot water temperature in the described hot water circulating device and the temperature signal that second temperature sensor can be detected and hot water temperature's setting value compares and select second controller of connecting another disconnection in hot water circulating device and the cooling water circulating device according to comparative result.
After having adopted technique scheme, the beneficial effects of the utility model are: because described air compression unit comprises two compressors at least, the air intake duct of described these compressors and blast pipe are in parallel respectively; It also comprises first temperature sensor and first controller of detectable environment temperature; Described first controller is provided with the temperature signal that first temperature sensor can be detected and the environment temperature setting value compares and make corresponding compressor enter the first control circuit of opening according to comparative result, so this hot water unit is when using summer, if environment temperature is higher than desired temperature, the first control circuit of first controller compares temperature signal and the environment temperature setting value that first temperature sensor detects, and make the few relatively compressor of platform number enter opening according to comparative result, thereby reduced the compressed capability of whole gas compression unit, adapted to user summer with the few demand of hot water; When using in the winter time, if environment temperature is lower than the environment temperature setting value, the first control circuit of first controller will be according to comparative result, make the many relatively compressors of platform number enter opening, thereby increased the compressed capability of whole gas compression unit, adapted to the user and used the many demands of heat winter.It does not need additionally to increase electric heating device, thermal efficiency height, and reduced user's use cost.
Moreover, because it also is provided with the pressure sensor of detectable compressor air suction pressure, with the pressure signal that pressure sensor can be detected and pressure set points compares and according to the second control circuit of comparative result system control rotation speed of fan, so it is too high to work as ambient temperature, cause evaporating temperature too high and when making compressor air suction pressure surpass the higher limit of setting pressure, first controller will reduce the rotating speed of blower fan by second control circuit, thereby reduce the heat that refrigeration working medium absorbs from air, and then the evaporating pressure when reducing refrigeration working medium and in first heat exchanger, evaporate, the normal operation of assurance compressor; When compressor air suction pressure is lower than the lower limit of setting pressure, first heat exchanger will improve the rotating speed of blower fan by second control circuit, thereby increase the heat that refrigeration working medium absorbs from air, and then the evaporating pressure when improving refrigeration working medium and in first heat exchanger, evaporating, refrigeration working medium is fully evaporated, improve the heating capacity of compressor.Therefore, no matter summer or winter, compressor can both safe and reliable operation under a metastable temperature environment.
Because this hot water unit also is provided with new bellows, and be connected the air channel between the air outlet of the air inlet that is removably connected to described new bellows and described first heat exchanger; Be connected with described second heat exchanger, and the cooling water circulating device in parallel with described hot water circulating device, with second temperature sensor that can detect hot water temperature in the described hot water circulating device, compare with the temperature signal that second temperature sensor can be detected and hot water temperature's setting value, and select one in hot water circulating device and the cooling water circulating device to connect and second controller of another disconnection according to comparative result, so behind the heat exchange surface of air through first heat exchanger, heat is absorbed into and is cold wind, cold wind is through connecting the air channel, import new bellows, can be cooling for user's summer air-conditioning.When the hot water temperature who detects when second temperature sensor is higher than the hot water temperature and sets value, second controller sends the peripheral passage that hot water circulating device is cut off in instruction, open the peripheral passage of cooling water circulating device simultaneously, make the condensation temperature of refrigeration working medium in second heat exchanger be unlikely the condensation temperature that allows above compressor, compressor can normally move, continue as the user cold is provided continually, can not reach design temperature because of hot water, corresponding compressor is shut down or change low-speed running over to, and stop the cold wind supply.When the hot water temperature who detects when second temperature sensor is lower than the hot water temperature and sets value, second controller sends the peripheral passage that cooling water circulating device is cut off in instruction, and the peripheral passage of opening hot water circulating device simultaneously continues hot water is heated, until reaching design temperature, move in circles.So the utility model when heating water, can also provide stable cold for air-conditioned room, has saved resource, saved user's air-conditioning spending expense.When winter, the user did not need cold, can also remove connecting the air channel, the cold wind that unit produces is directly arranged environment space towards periphery, can improve the heat transfer intensity of refrigeration working medium and air in first heat exchanger like this, the heating capacity of raising unit.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 be embodiment illustrated in fig. 1 in the theory diagram of first controller;
Fig. 3 be embodiment illustrated in fig. 1 in the theory diagram of second controller.
The specific embodiment
Fig. 1 shows a kind of air-source heat pump hot water group, it comprises gas compression unit 1, with first heat exchanger 2 that can carry out heat exchange with outdoor air, with the blower fan 3 that can around the heat exchange surface of described first heat exchanger, produce wind field, with second heat exchanger 7 that can carry out heat exchange with user's hot water, with the hot water circulating device that is connected with described second heat exchanger 7, described gas compression unit 1, first heat exchanger 2 and second heat exchanger 7 correspondingly link together by cross valve 6, and annexation between them and known heat-pump hot-water unit are basic identical.First heat exchanger 2 is made of finned heat exchanger, and blower fan 3 is installed on the inside of described finned heat exchanger, and such structure is compactness but also heat exchange efficiency height not only.
Described air compression unit 1 comprises first compressor 11 and second compressor 12, and the air intake duct of described these compressors and blast pipe are in parallel respectively.Certainly the quantity of compressor is not limited to two, can determine according to the required maximum heating capacity of user, but should guarantee two at least.
As shown in Figure 2, this heat-pump hot-water unit also comprises first temperature sensor of detectable environment temperature and the pressure sensor and first controller of detectable compressor air suction pressure; The input of described first controller is electrically connected with first temperature sensor and pressure sensor respectively, the output of described first controller is electrically connected with blower fan 3 and compressor respectively, described first controller is provided with the temperature signal that first temperature sensor can be detected and the environment temperature setting value compares and make corresponding compressor enter the first control circuit and the pressure signal that pressure sensor can be detected of opening and pressure set points compares and according to the second control circuit of comparative result system control blower fan 3 rotating speeds according to comparative result.
When using summer, if environment temperature is higher than desired temperature, the first control circuit of first controller compares temperature signal and the environment temperature setting value that first temperature sensor detects, and make the few relatively compressor of platform number enter opening according to comparative result, thereby reduced the compressed capability of whole gas compression unit, adapted to user summer with the few demand of hot water; When using in the winter time, if environment temperature is lower than the environment temperature setting value, the first control circuit of first controller will be according to comparative result, make the many relatively compressors of platform number enter opening, thereby increased the compressed capability of whole gas compression unit, adapted to the user and used the many demands of heat winter.It does not need additionally to increase electric heating device, thermal efficiency height, and reduced user's use cost.
For the more consumption of the living electric energy of joint, one in described these compressors is frequency-changeable compressor, it can be according to what of user's needs heat, by adjusting the frequency of supply of frequency-changeable compressor, change the motor speed of described frequency-changeable compressor, thereby adjust the compressed capability of frequency-changeable compressor, the operation that makes whole unit further reduces user's use cost more economically.
When ambient temperature is too high, the evaporating temperature of heat-exchange working medium will increase, thereby make compressor air suction pressure overpressure setting value, at this moment, first heat exchanger 2 will reduce the rotating speed of blower fan 3 by second control circuit, thereby reduce the heat that refrigeration working medium absorbs from air, so the evaporating pressure when reducing refrigeration working medium and in first heat exchanger, evaporate, the normal operation of assurance compressor; When compressor air suction pressure is lower than pressure set points, first heat exchanger 2 will improve the rotating speed of blower fan 3 by second control circuit, thereby increase the heat that refrigeration working medium absorbs from air, and then the evaporating pressure when improving refrigeration working medium and in first heat exchanger, evaporating, refrigeration working medium is fully evaporated, improve the heating capacity of compressor.Therefore, no matter summer or winter, compressor can both safe and reliable operation under a metastable temperature environment.
Shown in Fig. 1 and Fig. 3 were common, in order to collect the cold wind that this heat-pump hot-water unit produces, this hot water unit also was provided with new bellows 5, and was connected air channel 4 between the air outlet of the air inlet that is removably connected to described new bellows 5 and described first heat exchanger 2; With with that be connected and the in parallel cooling water circulating device of described second heat exchanger 7 with described hot water circulating device, with second temperature sensor that can detect hot water temperature in the described hot water circulating device and the temperature signal that second temperature sensor can be detected and hot water temperature's setting value compares and select one in hot water circulating device and the cooling water circulating device to connect and second controller of another disconnection according to comparative result.
Described hot water circulating device comprises that pipeline is series at water inlet and the hot-water circulating pump between the delivery port, the automatically controlled stop valve of hot water line and the hot water storage tank 82 of described second heat exchanger 7, and the automatically controlled stop valve of described hot water line is electrically connected with described second controller.Its concrete structure is: be provided with the automatically controlled stop valve 81 of first hot water line between described cold second heat exchanger, 7 delivery ports and described hot water storage tank's 82 the water inlet, be provided with the automatically controlled stop valve 83 of second hot water line between the water inlet of described hot water storage tank's 82 delivery port and water pump 10, the delivery port of described water pump 10 is connected with the water inlet of described second heat exchanger 7.
Described cooling water circulating device comprises that pipeline is series at the water inlet of described second heat exchanger 7 and automatically controlled stop valve of cooling water cycle water pump, cooling water pipeline and water-cooling apparatus 92 between the delivery port, water-cooling apparatus 92 is made of cooling tower, and the automatically controlled stop valve of described cooling water pipeline is electrically connected with described second controller.Its concrete structure is: be provided with the automatically controlled stop valve 81 of first cooling water pipeline between the water inlet of the delivery port of described second heat exchanger 7 and described water-cooling apparatus 92, be provided with the automatically controlled stop valve 83 of second cooling water pipeline between the water inlet of the delivery port of described water-cooling apparatus 82 and described water pump 10.
By said structure as can be seen, described cooling water cycle water pump and hot-water circulating pump are made of same water pump 10.
Behind the heat exchange surface of air through first heat exchanger 2, heat is absorbed into and is cold wind, and cold wind imports new bellows 5 through connecting air channel 4, can be cooling for user's summer air-conditioning.When the hot water temperature who detects when second temperature sensor is higher than the hot water temperature and sets value, second controller sends the peripheral passage that hot water circulating device is cut off in instruction, open the peripheral passage of cooling water circulating device simultaneously, make the condensation temperature of refrigeration working medium in second heat exchanger be unlikely the condensation temperature that allows above compressor, compressor can normally move, continue as the user cold is provided continually, can not reach design temperature because of hot water, corresponding compressor is shut down or change low-speed running over to, and stop the cold wind supply.When the hot water temperature who detects when second temperature sensor is lower than the hot water temperature and sets value, second controller sends the peripheral passage that cooling water circulating device is cut off in instruction, and the peripheral passage of opening hot water circulating device simultaneously continues hot water is heated, until reaching design temperature, move in circles.So the utility model when heating water, can also provide stable cold for air-conditioned room, has saved resource, saved user's air-conditioning spending expense.When winter, the user did not need cold, can also remove connecting the air channel, the cold wind that unit produces is directly arranged environment space towards periphery, can improve the heat transfer intensity of refrigeration working medium and air in first heat exchanger like this, the heating capacity of raising unit.
In sum, the utility model has been done 3 improvement on the basis of known technology: one, with at least two compressor parallel connections, and the outdoor temperature signal is reached a controller and set temperature value compares by a temperature sensor, determine the unlatching quantity of compressor then according to comparative result, thereby when fundamentally having solved winter, summer operation, the hot water amount that the user needs and the unmatched problem of heating capacity of unit.They are two years old, the pressure sensor of surveying compressor air suction pressure is set, its force value that records and setting value are compared, and to determine to heighten according to comparative result still be the reduction rotation speed of fan, thereby reach the purpose of regulating refrigeration working medium evaporating pressure in heat exchanger by changing air quantity, guaranteed the normal operation of compressor.Its three, reclaimed by increase connecting the cold that air channel and cold water EGR will discard originally, improved the utilization rate of hot water unit, and reduced user's energy resource consumption.

Claims (7)

1, the air-source heat pump hot water group, comprise gas compression unit (1), with first heat exchanger (2) that can carry out heat exchange with outdoor air, with the blower fan (3) that can around the heat exchange surface of described first heat exchanger, produce wind field, with second heat exchanger (7) that can carry out heat exchange with user's hot water, with the hot water circulating device that is connected with described second heat exchanger (7), described gas compression unit (1), first heat exchanger (2) and second heat exchanger (7) correspondingly link together by cross valve (6), it is characterized in that: described air compression unit (1) comprises two compressors at least, and the air intake duct of described these compressors and blast pipe are in parallel respectively; It also comprises first temperature sensor of detectable environment temperature and the pressure sensor and first controller of detectable compressor air suction pressure; The input of described first controller is electrically connected with first temperature sensor and pressure sensor respectively, the output of described first controller is electrically connected with blower fan (3) and compressor respectively, described first controller is provided with the temperature signal that first temperature sensor can be detected and the environment temperature setting value compares and make corresponding compressor enter the first control circuit and the pressure signal that pressure sensor can be detected of opening and pressure set points compares and according to the second control circuit of comparative result system control blower fan (3) rotating speed according to comparative result.
2, air-source heat pump hot water group as claimed in claim 1 is characterized in that: one in described these compressors is frequency-changeable compressor.
3, air-source heat pump hot water group as claimed in claim 2 is characterized in that: it also comprises new bellows (5), and is connected air channel (4) between the air outlet of the air inlet that is removably connected to described new bellows (5) and described first heat exchanger (2); With with described second heat exchanger (7) cooling water circulating device that be connected and in parallel with described hot water circulating device, with second temperature sensor that can detect hot water temperature in the described hot water circulating device and the temperature signal that second temperature sensor can be detected and hot water temperature's setting value compares and select one in hot water circulating device and the cooling water circulating device to connect and second controller of another disconnection according to comparative result.
4, air-source heat pump hot water group as claimed in claim 3, it is characterized in that: described hot water circulating device comprises that pipeline is series at water inlet and the hot-water circulating pump between the delivery port, the automatically controlled stop valve of hot water line and the hot water storage tank (82) of described second heat exchanger (7), and the automatically controlled stop valve of described hot water line is electrically connected with described second controller.
5, air-source heat pump hot water group as claimed in claim 4, it is characterized in that: described cooling water circulating device comprises that pipeline is series at the water inlet of described second heat exchanger (7) and automatically controlled stop valve of cooling water cycle water pump, cooling water pipeline between the delivery port and water-cooling apparatus (92), and the automatically controlled stop valve of described cooling water pipeline is electrically connected with described second controller.
6, air-source heat pump hot water group as claimed in claim 5 is characterized in that: described cooling water cycle water pump and hot-water circulating pump are made of same water pump (10).
7, air-source heat pump hot water group as claimed in claim 1 is characterized in that: described first heat exchanger (2) is made of finned heat exchanger, and described blower fan (3) is installed on the inside of described finned heat exchanger.
CNU2007200172412U 2007-01-08 2007-01-08 Air source thermal pump water heater unit Expired - Lifetime CN201003885Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200172412U CN201003885Y (en) 2007-01-08 2007-01-08 Air source thermal pump water heater unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007200172412U CN201003885Y (en) 2007-01-08 2007-01-08 Air source thermal pump water heater unit

Publications (1)

Publication Number Publication Date
CN201003885Y true CN201003885Y (en) 2008-01-09

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Application Number Title Priority Date Filing Date
CNU2007200172412U Expired - Lifetime CN201003885Y (en) 2007-01-08 2007-01-08 Air source thermal pump water heater unit

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101221007B (en) * 2007-01-08 2011-01-12 葛建民 Air source heat pump hot water units
CN104034047B (en) * 2013-03-04 2017-02-08 广东美的暖通设备有限公司 Heat pump water heater and control method thereof
CN108548282A (en) * 2018-06-29 2018-09-18 珠海格力电器股份有限公司 Control method and device, computer equipment and the air conditioner of air conditioner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101221007B (en) * 2007-01-08 2011-01-12 葛建民 Air source heat pump hot water units
CN104034047B (en) * 2013-03-04 2017-02-08 广东美的暖通设备有限公司 Heat pump water heater and control method thereof
CN108548282A (en) * 2018-06-29 2018-09-18 珠海格力电器股份有限公司 Control method and device, computer equipment and the air conditioner of air conditioner
CN108548282B (en) * 2018-06-29 2019-12-31 珠海格力电器股份有限公司 Control method and device of air conditioner, computer equipment and air conditioner

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Granted publication date: 20080109

Effective date of abandoning: 20070108