CN203771795U - Heat pump with optimum heating efficiency maintainable - Google Patents
Heat pump with optimum heating efficiency maintainable Download PDFInfo
- Publication number
- CN203771795U CN203771795U CN201420131217.1U CN201420131217U CN203771795U CN 203771795 U CN203771795 U CN 203771795U CN 201420131217 U CN201420131217 U CN 201420131217U CN 203771795 U CN203771795 U CN 203771795U
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- China
- Prior art keywords
- condenser
- expansion valve
- heating efficiency
- temperature sensor
- heat pump
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Abstract
The utility model relates to a heat pump with optimum heating efficiency maintainable. The heat pump comprises an evaporator, a compressor, a condenser, an electronic expansion valve, a water pump, an expansion valve controller and a water pump controller. When the heat pump is in use, the expansion valve controller cooperates with a database to judge optimum pressure allowing the optimum heating efficiency to be achieved currently according to external temperature and outlet temperature of the condenser, and then adjusts switching speed and opening of the electronic expansion valve by matching with current pressure of the high-pressure side so as to reach the optimum pressure; the water pump controller adjusts water inflow through outlet water temperature of the condenser so as to enable the outlet water temperature to be equal to set temperature, and thus water flow temperature of the condenser is ensured to be unchanged so as to avoid affecting the heating efficiency; adjustment is performed continuously and repeatedly through the two controllers so as to enable the heat pump to be maintained at the optimum heating efficiency and kept at the set outlet water temperature.
Description
Technical field
The utility model relates to a kind of heat pump that maintains best heating efficiency.
Background technology
Refer to shown in Fig. 4, the heat pump of prior art includes with copper pipe 95 sequentially the circulate evaporimeter 91, a compressor 92, a condenser 93 and the expansion valve 94 that connect, and in copper pipe 95, is provided with refrigerant with loopy moving in each element; When use, liquid refrigerants enters into evaporimeter 91, and flashes to gaseous state in the extraneous heat of the interior absorption of evaporimeter 91; Gaseous coolant further compresses to improve temperature through compressor 92 afterwards; Then high-pressure gaseous refrigerant enters into 93 li of condensers, and carries out heat exchange and emit heat and liquefaction with the water of 93 li of condensers, and therefore the water that condenser is 93 li reach the effect of heating; Last liquid refrigerants moves to expansion valve 94 and reduces pressure, and then enters into evaporimeter 91 and recycle.
But the heat pump of prior art has following shortcoming:
One, the expansion valve 94 of prior art mostly is mechanical type automatic expansion valve 94, wherein more in the majority with temperature mode automatic expansion valve 94, temperature mode automatic expansion valve 94 can coordinate a sensing rod for temperature 96 jointly to use, sensing rod for temperature 96 is arranged at compressor 92 porch to measure the temperature at this place, in the time of the temperature rise of this place, sensing rod for temperature 96 can make expansion valve 94 increase aperture, otherwise can make expansion valve 94 reduce aperture; And find out from above-mentioned, the heat pump of prior art is to control according to the information of low-pressure side (evaporimeter 91 is between compressor 92), but high-pressure side (compressor 92 is between condenser 93) is only and heats end, therefore the information of obtaining from low-pressure side judges and controls expansion valve 94 and pressure, just cannot obtain best heating efficiency.
Its two, aforesaid mechanical type automatic expansion valve 94, its switching speed is to control with inner spring, therefore accurate gauge tap speed, and the aperture of mechanical type automatic expansion valve 94 only can be adjusted to multiple fixed values, and cannot changing arbitrarily; Therefore the mechanical type expansion valve 94 of prior art cannot coordinate required switching speed and aperture to reach better heating efficiency.
They are three years old, the condenser 93 of prior art needs further to connect a tank 97, water in tank 97 flows to condenser 93 and obtains heat recirculation return flume 97, makes thus the temperature rise in tank 97, and just can shut down after waterborne in tank 97 rises to desired temperature; But this kind of mode also causes flowing through, the fluid temperature of condenser 93 heats up gradually, and so the temperature in condenser 93 is fixing, and causes heating efficiency not good.
Utility model content
Because shortcoming and the deficiency of aforesaid prior art, the purpose of this utility model is to provide a kind of heat pump that maintains best heating efficiency, and it can constantly adjust pressure, to maintain best heating efficiency.
For achieving the above object, the technical scheme that the utility model adopts is a kind of heat pump that maintains best heating efficiency of design, and the described heat pump that maintains best heating efficiency comprises an evaporimeter, a compressor, a condenser, an electronic expansion valve, refrigerant, a pressure sensor, a condensator outlet temperature sensor, an ambient temperature sensor and an expansion valve controller; Evaporimeter, compressor, condenser and electronic expansion valve sequentially connect with copper pipe circulation, and form an accumulation of heat circulation; Refrigerant is loopy moving in accumulation of heat circulation, and is carbon dioxide; Pressure sensor is located on the copper pipe between compressor and condenser; Condensator outlet temperature sensor is located on the copper pipe between condenser and electronic expansion valve; Expansion valve controller electrical connection electronic expansion valve, pressure sensor, condensator outlet temperature sensor and ambient temperature sensor, and according to switching speed and the aperture of the information control electronic expansion valve of pressure sensor, condensator outlet temperature sensor and ambient temperature sensor.
Preferably, the described heat pump that maintains best heating efficiency further includes a water pump, a condenser leaving water temperature sensor and a water pump controller; Described water pump connects described condenser; Described condenser leaving water temperature sensor connects described condenser; Described water pump controller is electrically connected described water pump and condenser leaving water temperature sensor, and supplies with the water yield of condenser according to water pump described in the information control of described condenser leaving water temperature sensor.
Preferably, described expansion valve controller is proportional plus integral plus derivative controller.
Preferably, the described heat pump that maintains best heating efficiency further includes a magnetic valve, described magnetic valve connects the copper pipe between described compressor and condenser with a copper pipe, and described magnetic valve connects the copper pipe between described electronic expansion valve and evaporimeter with another copper pipe.
The beneficial effects of the utility model and advantage are:
1, while use, expansion valve controller can be according to ambient temperature and condensator outlet temperature, coordinate database to judge the optimum pressure that instantly can reach best heating efficiency, and then coordinate high side pressure instantly to adjust switching speed and the aperture of electronic expansion valve, and constantly repeat and make high-pressure side can maintain optimum pressure; The part foundation that judges optimum pressure due to expansion valve controller is to come from the high-pressure side that heats end, and therefore judged result can be more accurate; And because the utility model uses controllable switch speed and can tune to the electronic expansion valve of any opening degree, switching speed that therefore just can be best is adjusted to best aperture and adjusts high side pressure; The utility model is constantly circulation adjustment thus, to reach the object that maintains best heating efficiency.
2, furthermore, the described heat pump that maintains best heating efficiency, wherein further includes a water pump, a condenser leaving water temperature sensor and a water pump controller; Water pump connects condenser; Condenser leaving water temperature sensor connects condenser; Water pump controller electrical connection water pump and condenser leaving water temperature sensor, and according to the water yield of the information control water pump supply condenser of condenser leaving water temperature sensor.The utility model need not arrange the tank of prior art thus, and directly make water pump adjust the inflow of condenser according to the leaving water temperature of condenser, water temperature in condenser just can directly rise to design temperature thus, even and if heating capacity or other conditions change to some extent, water pump controller also can change condenser inflow at any time, to keep water temperature and leaving water temperature in condenser constant, so just can avoid affecting heating efficiency.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model.
Flow chart when Fig. 2 is the utility model use.
Fig. 3 is the schematic diagram of another embodiment of the present utility model.
Fig. 4 is the schematic diagram of the heat pump of prior art.
Critical piece symbol description:
11 evaporimeter 12 compressors
13 condenser 14 electronic expansion valves
15 water pump 21 copper pipes
22 copper pipe 23 copper pipes
24 copper pipe 31 pressure sensors
32 condensator outlet temperature sensor 33 condenser leaving water temperature sensors
11A evaporimeter 12A compressor
13A condenser 14A electronic expansion valve
16A magnetic valve 22A copper pipe
24A copper pipe 25A copper pipe
26A copper pipe
91 evaporimeter 92 compressors
93 condenser 94 expansion valves
95 copper pipe 96 sensing rod for temperature
97 tanks.
Detailed description of the invention
Below coordinate accompanying drawing and preferred embodiment of the present utility model, further set forth the technological means that the utility model is taked for reaching predetermined object.
Refer to shown in Fig. 1, the heat pump that maintains best heating efficiency of the present utility model comprises an evaporimeter 11, a compressor 12, a condenser 13, an electronic expansion valve 14, refrigerant, a water pump 15, a pressure sensor 31, a condensator outlet temperature sensor 32, an ambient temperature sensor, a condenser leaving water temperature sensor 33, an expansion valve controller and a water pump controller.
Evaporimeter 11, compressor 12, condenser 13 and electronic expansion valve 14 sequentially connect with copper pipe 21,22,23,24 circulations, and form an accumulation of heat circulation; Refrigerant is loopy moving in accumulation of heat circulation, and is carbon dioxide.
Water pump 15 is connected in water inlet place of condenser 13, and in order to adjust the inflow that enters condenser 13.
Pressure sensor 31 is located on the copper pipe 22 between compressor 12 and condenser 13, and can measure the pressure of high-pressure side (compressor 12 is between condenser 13); Condensator outlet temperature sensor 32 is located on the copper pipe 23 between condenser 13 and electronic expansion valve 14, and can measure the temperature at condenser 13 refrigerant exit places; Condenser leaving water temperature sensor 33 is connected in water outlet place of condenser 13, and can measure the output water temperature of condenser 13.
Expansion valve controller electrical connection electronic expansion valve 14, pressure sensor 31, condensator outlet temperature sensor 32 and ambient temperature sensor; Expansion valve controller is according to switching speed and the aperture of the information control expansion valve 14 of pressure sensor 31, condensator outlet temperature sensor 32 and ambient temperature sensor; In the present embodiment, expansion valve controller is proportional plus integral plus derivative controller (PID controller, Proportional Integral Derivative controller), but not as limit; Water pump controller is electrically connected water pump 15 and condenser leaving water temperature sensor 33, and supplies with the water yield of condenser 13 according to the information control water pump 15 of condenser leaving water temperature sensor 33.
Refer to shown in Fig. 2, the utility model comprises a pressure and adjusts mechanism and leaving water temperature adjustment mechanism while use, and details are as follows:
Leaving water temperature is adjusted mechanism: first user sets condenser 13 leaving water temperatures of wanting, then condenser leaving water temperature sensor 33 is measured the actual leaving water temperature of condenser 13, then water pump controller is adjusted water pump 15 and supplies with the frozen water inflow of condenser 13 according to the leaving water temperature of setting, until the leaving water temperature of condenser 13 is equal to the leaving water temperature of setting; For example, in the time that leaving water temperature is too high, improve frozen water inflow to reduce temperature, when leaving water temperature is too low, reduce frozen water inflow to improve temperature, so adjustment just can reach the object that makes leaving water temperature be equal to design temperature.
Pressure is adjusted mechanism: condensator outlet temperature sensor 32 and ambient temperature sensor are measured respectively condenser 13 outlet temperatures and ambient temperature, and expansion valve controller is judged the optimum pressure that now can reach best heating efficiency according to described two temperature from database, and work as downforce according to the high-pressure side that this optimum pressure and pressure sensor 31 measure, adjust switching speed and the aperture of electronic expansion valve 14, to reach best heating efficiency.
After the utility model start, aforesaid two kinds of adjustment mechanism just can be carried out simultaneously, and neither disconnected repeating, while carrying out, various environmental conditions may become in some micromodification at every turn, and pressure reconditioner has been made as the best heating efficiency of maintenance, may be in response to the change of environmental condition related adjustment heating capacity, but in the time that the change of heating capacity causes the change of condenser 13 leaving water temperatures, the inflow of condenser also can adjust at once, so that design temperature is returned in condenser 13 leaving water temperature corrections; Adjust constantly repeating of mechanism by two kinds thus, just can make the utility model maintain best heating efficiency and remain on the leaving water temperature of setting.
In addition, in pressure adjustment mechanism, expansion valve controller is according to ambient temperature and on high-tension side information (condenser 13 outlet temperatures), judges the pressure that can reach best heating efficiency, and high-pressure side is the end that heats of heat pump, so the optimum pressure judging is thus more accurate; In addition, expansion valve controller can be judged the optimized switch speed of expansion valve 14 simultaneously, and the expansion valve 14 that the utility model uses is for electronic type can coordinate and carry out this switching speed, makes thus the utility model can obtain this best heating efficiency.
Moreover in leaving water temperature adjustment mechanism, the utility model is by making water temperature and leaving water temperature in condenser 13 constant, to reach the object of avoiding affecting heating efficiency.
Refer to shown in Fig. 3, the utility model can further be provided with a magnetic valve 16A, magnetic valve 16A connects the copper pipe 22A between compressor 12A and condenser 13A with a copper pipe 25A, and magnetic valve 16A is with the copper pipe 24A between another copper pipe 26A connecting electronic formula expansion valve 14A and evaporimeter 11A; Magnetic valve 16A is connected between compressor 12A and evaporimeter 11A in parallel thus, when refrigerant (carbon dioxide) is after compressor 12A compression, if refrigerant pressure is excessive, electronic expansion valve 14A has little time pressure release, and magnetic valve 16A can open with synchronous pressure release; Than electronic expansion valve 14A capable of regulating aperture, therefore opening speed is slower, magnetic valve 16A cannot adjust aperture and only can open or close, therefore magnetic valve 16A opening speed is relatively more rapid, thus magnetic valve 16A can quick pressure releasing to avoid electronic expansion valve 14A because having little time the pressure release damage of exploding.
The above is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, but not in order to limit the utility model, technical field technical staff under any, not departing from the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solutions of the utility model, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (5)
1. the heat pump that can maintain best heating efficiency, is characterized in that: the described heat pump that maintains best heating efficiency comprises an evaporimeter, a compressor, a condenser, an electronic expansion valve, refrigerant, a pressure sensor, a condensator outlet temperature sensor, an ambient temperature sensor and an expansion valve controller; Described evaporimeter, compressor, condenser and electronic expansion valve sequentially connect with copper pipe circulation, and form an accumulation of heat circulation; Described refrigerant is loopy moving in described accumulation of heat circulation, and described refrigerant is carbon dioxide; Described pressure sensor is located on the copper pipe between described compressor and condenser; Described condensator outlet temperature sensor is located on the copper pipe between described condenser and electronic expansion valve; Described expansion valve controller is electrically connected described electronic expansion valve, pressure sensor, condensator outlet temperature sensor and ambient temperature sensor, and according to switching speed and the aperture of electronic expansion valve described in the information control of described pressure sensor, condensator outlet temperature sensor and ambient temperature sensor.
2. the heat pump that maintains best heating efficiency according to claim 1, is characterized in that: the described heat pump that maintains best heating efficiency further includes a water pump, a condenser leaving water temperature sensor and a water pump controller; Described water pump connects described condenser; Described condenser leaving water temperature sensor connects described condenser; Described water pump controller is electrically connected described water pump and condenser leaving water temperature sensor, and supplies with the water yield of condenser according to water pump described in the information control of described condenser leaving water temperature sensor.
3. the heat pump that maintains best heating efficiency according to claim 1 and 2, is characterized in that: described expansion valve controller is proportional plus integral plus derivative controller.
4. the heat pump that maintains best heating efficiency according to claim 1 and 2, it is characterized in that: the described heat pump that maintains best heating efficiency further includes a magnetic valve, described magnetic valve connects the copper pipe between described compressor and condenser with a copper pipe, and described magnetic valve connects the copper pipe between described electronic expansion valve and evaporimeter with another copper pipe.
5. the heat pump that maintains best heating efficiency according to claim 3, it is characterized in that: the described heat pump that maintains best heating efficiency further includes a magnetic valve, described magnetic valve connects the copper pipe between described compressor and condenser with a copper pipe, and described magnetic valve connects the copper pipe between described electronic expansion valve and evaporimeter with another copper pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420131217.1U CN203771795U (en) | 2014-03-21 | 2014-03-21 | Heat pump with optimum heating efficiency maintainable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420131217.1U CN203771795U (en) | 2014-03-21 | 2014-03-21 | Heat pump with optimum heating efficiency maintainable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203771795U true CN203771795U (en) | 2014-08-13 |
Family
ID=51288980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420131217.1U Expired - Fee Related CN203771795U (en) | 2014-03-21 | 2014-03-21 | Heat pump with optimum heating efficiency maintainable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203771795U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10670292B2 (en) | 2016-03-03 | 2020-06-02 | Carrier Corporation | Fluid pressure calibration in climate control system |
| CN112460839A (en) * | 2020-10-09 | 2021-03-09 | 国网浙江省电力有限公司湖州供电公司 | User comfort level-based ground source heat pump control method and system |
-
2014
- 2014-03-21 CN CN201420131217.1U patent/CN203771795U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10670292B2 (en) | 2016-03-03 | 2020-06-02 | Carrier Corporation | Fluid pressure calibration in climate control system |
| CN112460839A (en) * | 2020-10-09 | 2021-03-09 | 国网浙江省电力有限公司湖州供电公司 | User comfort level-based ground source heat pump control method and system |
| CN112460839B (en) * | 2020-10-09 | 2022-04-01 | 国网浙江省电力有限公司湖州供电公司 | User comfort level-based ground source heat pump control method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20200321 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |