CN1904513A - Method of regulating and controlling heat pump hot water system using instantaneous COP value - Google Patents
Method of regulating and controlling heat pump hot water system using instantaneous COP value Download PDFInfo
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- CN1904513A CN1904513A CN 200610029682 CN200610029682A CN1904513A CN 1904513 A CN1904513 A CN 1904513A CN 200610029682 CN200610029682 CN 200610029682 CN 200610029682 A CN200610029682 A CN 200610029682A CN 1904513 A CN1904513 A CN 1904513A
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Abstract
A kind of adjust and control heat pump hot water system's method uses the instantaneous COP value. It belongs to the energy supplying heat and the realm of air condition technique .This invention carries on performance test to any model of the heat pump hot water system, and it tests out the speed when instantaneous COP value is approach to one of different environment and condensation temperature system on the matching conditions, and it becomes the control rule. Once system COP value is near to one, it will shift the heat pump heating to the electricity heating. At the same time, when the heat pump has problems, it will shift the heat pump heating to the electricity heating according to the stated control rule. It will detect the water temperature and show the problem on control panel to remind the customer, this realizes the fault diagnosis. The adjust and control heat pump hot water system's method which uses the instantaneous COP value of this method can improve the utilization of the energy. It has the characteristics of fault diagnosis, improving the use credibility and comfort. The meaning of saving energy and protecting the environment is obvious. And it is fit for all kinds of heat pump hot water system.
Description
Technical field
The present invention relates to a kind of energy-saving control method, relate in particular to a kind of method of utilizing the instantaneous COP value regulating and controlling heat pump hot water system, belong to heat supply of energy class and air-conditioning technical field.
Background technology
Heat pump hot-water system is a kind of hot water apparatus with environmental protection and energy saving characteristic.It is to utilize evaporimeter to absorb heat energy from surrounding environment, and by condenser heat energy is discharged in water system or the water tank and goes, thereby realizes the production of hot water.Because that heat pump hot-water system has is energy-efficient, can round-the-clockly use, advantage such as safe and reliable, and has realized the cascade utilization of the energy, have wide development and application prospect.
Heat power and the instantaneous COP of heat pump hot-water system have bigger excursion with the variation of environment temperature, especially in the winter time the problem that the speed of heating is slow even can't work can appear in microthermal climate, therefore, in order to address this problem, the common at present way that adopts electrical heating to replenish.In the auxiliary electrically heated design of existing heat pump hot-water system, start electrically heated control scheme based on the collection environment temperature, collecting temperature is rationally whether with the energy-saving effect of direct decision systems.But, the service behaviour of heat pump hot-water system is also not exclusively decided by environment temperature, and it is bigger different that the variation of condensation temperature of system own and evaporating temperature also can cause the instantaneous performance of system to have, therefore, one-side is inadequate with environment temperature as basis for estimation, has certain deficiency.On the one hand, the time of auxiliary electrical heating starting is too early, the energy consumption of system strengthens, be unfavorable for energy-conservation, on the other hand, it is late excessively that electrical heating starts, compressor operating is abominable, can influence user's normal use, influences comfortableness, therefore, formulating suitable electricity assists the control scheme of heating extremely important to the energy-saving design of system.Also do not realize at present the scheme of the energy-conservation and fault diagnosis of heat pump hot-water system simultaneously as basis for estimation with system's instantaneous COP.
Find through literature search prior art, Chinese patent application number: 200410019672, denomination of invention is: the control method of the warm circulation of air-conditioning system of auxiliary heater is installed, and this invention is the invention about the control method of the warm circulation of air-conditioning system that auxiliary heater is installed.Control method is made up of following several stages: the 1st comparison phase that the indoor temperature that indoor temperature transmitter is detected and user's desired temperature compare; When the desired temperature in the 1st comparison phase is higher than indoor temperature, judge whether the indoor tube temperature is higher than the 2nd comparison phase of institute's fixed temperature; When the indoor tube temperature was higher than institute's fixed temperature, the indoor blower of blower drove the stage in the drive chamber; After the indoor blower driving stage, judge whether outdoor temperature is lower than the 3rd comparison phase of institute's fixed temperature; When outdoor temperature is lower than institute's fixed temperature, drive auxiliary heater to carry out the 1st defrost phase of outdoor heat converter defrost operation; When the driving time of the auxiliary heater that drives in the defrost phase fix time in the time, air-conditioning is set at the warm circulation of system and makes the warm stage of warm system indoor, can find from the narration of this patent, the control of this control method is according to all being to assist electrically heated foundation with environment temperature as whether starting, but the factor of decision systems efficient also comprises condensation temperature and evaporating temperature except environment temperature, therefore, there is certain defective in the control method of this patent of invention.And according to heat pump principle, the instantaneous COP of heat pump hot-water system can descend gradually along with the rising of the decline of environment temperature and condensation temperature.System's instantaneous COP will be reduced near 1 when environment temperature is lower than certain degree and water temperature and rises to certain value; though the COP of idealized system can not drop to below 1; but; because the efficiency eta of compressor is lower than 1 in the real system; the power that is the compressor input is greater than the compressor power output; therefore; when system's operation is badly arrived certain degree; actual instantaneous COP can be equal to or less than 1; if under this operating condition, still use the heat pump hot-water system heating; then the heat pump under this operating mode does not possess energy-conservation effect; and operation is abominable, influences the life-span of compressor, therefore; be converted to electrical heating with the heat pump heating this moment will be more effective, compressor also be played the effect of protection under the situation of equal heat utilization level.Otherwise if started electrical heating at system's instantaneous COP under far above 1 situation, the overall COP of system can reduce on the contrary.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of method of utilizing the instantaneous COP value regulating and controlling heat pump hot water system is provided, make it when improving heat pump hot-water system economy and reliability, can also play the effect of fault diagnosis.
The present invention is achieved by the following technical solutions, the heat pump hot-water system that the present invention is directed to arbitrary type carries out performance test, test out the speed that under this matching condition varying environment and condensation temperature system instantaneous COP rise near 1 o'clock water temperature, as the foundation of control, in case system's instantaneous COP just switched to electrical heating with heat pump near 1 o'clock; Simultaneously, when heat pump breaks down, according to above-mentioned control foundation heat pump is switched to electrical heating, and water temperature is monitored, on control panel, show fault, realize fault diagnosis to remind the user.
Described system instantaneous COP is near the speed of water temperature rising in 1 o'clock, be expressed as f (t), unit is minute/℃, it represents that water water temperature to be heated rises 1 ℃ of needed time, because system's instantaneous COP is different near 1 o'clock condensation temperature under the situation of varying environment temperature, therefore, satisfying system's instantaneous COP is a series of value near 1 f (t), and these values that satisfy under the different operating modes of this condition are stored in the controller.
In case described system instantaneous COP just switched to electrical heating with heat pump near 1 o'clock, be specially: after the performance test of finishing a certain type heat pump hot-water system, the f (t) that test is finished is directly inputted in the controller, as the reference frame of control action.During the system operate as normal, temperature sensor is at set intervals to environment temperature, condensation temperature and water temperature are gathered, the temperature signal of gathering is transported to controller, and calculate the speed f (t ') that water temperature rises, then with f (t ') and corresponding environment temperature, f (t) value that controller stores under water temperature and the condensation temperature is compared, when f (t ') 〉=f (t), be that system's instantaneous COP is near 1, controller sends control signal, heat pump is closed, heating mode is switched in the electrical heating, when improving the compressor life-span, at utmost improved the efficient of system.
Described realization fault diagnosis, be specially: the f that obtains (t) is a series of value, therefore, if maximum is f (t1) in this series of values, be stored in the controller, same, temperature sensor is at set intervals to environment temperature, condensation temperature and water temperature are gathered, the temperature signal of gathering is transported to controller, and calculate the speed f (t ') that water temperature rises, then f (t1) value of f (t ') and controller storage is compared, when system breaks down as the cold-producing medium leakage or can't heat, at this moment heat speed and can obviously descend or can not heat, then promptly can fault be arranged decision-making system as f (t ') 〉=f (t1), controller switches to the auxiliary heating mode of electricity with the heat pump pattern, just in time can play the effect of fault diagnosis, on control panel, show simultaneously fault to remind the user, under out of order situation, still guarantee user's normal use, improved the reliability and the comfortableness of system.
The present invention utilizes the method for instantaneous COP value regulating and controlling heat pump hot water system to have the characteristics of raising system energy utilization rate, fault diagnosis, raising dependability and comfortableness, energy-conservation obvious with environment protection significance, and be applicable to all types of heat pump hot-water systems, commercialization development and application prospect are very good.
Description of drawings
Fig. 1 is the structural representation of the device of embodiments of the invention employing.
Among Fig. 1, temperature sensor 1, electrical auxiliary heater 2, attemperater (also can be the indoor section of air-cooled heat pump water chiller-heater units) 3, controller 4, source pump 5, power line and holding wire 6.
The specific embodiment
Content in conjunction with the inventive method provides following examples, and in conjunction with the accompanying drawings technical scheme of the present invention is described in further detail.
As shown in Figure 1, the enforcement of present embodiment is made up of temperature sensor 1, electrical auxiliary heater 2, attemperater (the perhaps indoor section of air-cooled heat pump water chiller-heater units) 3, controller 4, source pump 5, power line and holding wire 6.No specific (special) requirements can be set according to user's requirement in the power of electrical auxiliary heater 2, installation quantity and installation site.Temperature sensor 1 is placed on the position that can reflect mean temperature in the attemperater 3 or the position that can reflect the indoor section temperature rise rate of air-cooled heat pump water chiller-heater units; the signal that temperature sensor 1 is gathered sends to controller 4 by holding wire 6; in addition; the measures ambient temperature that source pump 5 carries and the sensor of condensation temperature also send to controller 4 to temperature signal; the characteristics of this regulate and control method are to decide the start and stop of heat pump hot-water system and electrical auxiliary heater 2 by controller 4; except possessing common startup-shutdown control function; this method can be handled the purpose that realizes energy saving of system and fault diagnosis by the detection of instantaneous COP, and concrete implementation step is as follows:
1, the heat pump hot-water system at this form carries out performance test, test out the speed f (t) that under this matching condition varying environment and condensation temperature system instantaneous COP rise near 1 o'clock water temperature, unit is minute/℃, it represents that water water temperature to be heated rises 1 ℃ of needed time, because system's instantaneous COP is different near 1 o'clock condensation temperature under the situation of varying environment temperature, therefore, satisfying system's instantaneous COP is a series of value near 1 f (t), and these values that satisfy under the different operating modes of this condition are stored in the controller 4;
2, after the performance test of finishing this type heat pump hot-water system, the f (t) that test is finished is directly inputted in the controller 4, as the reference frame of control action.During the system operate as normal, the measures ambient temperature that source pump 5 carries and the sensor of condensation temperature and temperature sensor 1 are at set intervals to environment temperature, condensation temperature and water temperature are gathered, the temperature signal of gathering is transported to controller 4, and calculate the speed f (t ') that water temperature rises, then with f (t ') and corresponding environment temperature, f (t) value that controller 4 stores under water temperature and the condensation temperature is compared, when f (t ') 〉=f (t), be that system's instantaneous COP is near 1, controller 4 sends control signal, heat pump is closed, heating mode is switched in the electrical heating, when improving the compressor life-span, at utmost improved the efficient of system.
3, the f that obtains (t) is a series of value, therefore, if maximum is f (t1) in this series of values, be stored in the controller 4, same, the measures ambient temperature that source pump 5 carries and the sensor of condensation temperature and temperature sensor 1 are at set intervals to environment temperature, condensation temperature and water temperature are gathered, the temperature signal of gathering is transported to controller 4, and calculate the speed f (t ') that water temperature rises, then f (t1) value of f (t ') and controller 4 storages is compared, when system breaks down as the cold-producing medium leakage or can't heat, at this moment heating speed can obviously descend or can not heat, then work as f (t ') 〉=f (t1) and promptly can fault be arranged decision-making system, controller 4 switches to the auxiliary heating mode of electricity with the heat pump pattern, just in time can play the effect of fault diagnosis, (water temperature can't rise or climbing speed when low) realizes that according to aforementioned setting value compressor is to electrically heated switching automatically when system breaks down, indicate fault-signal simultaneously on the control panel of controller 4 to remind the user, guarantee still can guarantee under the source pump 5 out of order situations user's normal use, improved the reliability and the comfortableness of system.
Claims (4)
1, a kind of method of utilizing the instantaneous COP value regulating and controlling heat pump hot water system, it is characterized in that, heat pump hot-water system at arbitrary type carries out performance test, test out the speed that under this matching condition varying environment and condensation temperature system instantaneous COP rise near 1 o'clock water temperature, as the foundation of control, in case system's instantaneous COP just switched to electrical heating with heat pump near 1 o'clock; Simultaneously, when heat pump breaks down, according to above-mentioned control foundation heat pump is switched to electrical heating, and water temperature is monitored, on control panel, show fault, realize fault diagnosis to remind the user.
2, the method for utilizing the instantaneous COP value regulating and controlling heat pump hot water system according to claim 1, it is characterized in that, described system instantaneous COP is near the speed of water temperature rising in 1 o'clock, rate representation is f (t), unit is minute/℃, it represents that water water temperature to be heated rises 1 ℃ of needed time, because system's instantaneous COP is different near 1 o'clock condensation temperature under the situation of varying environment temperature, therefore, satisfying system's instantaneous COP is a series of value near 1 f (t), and these values are stored in the controller.
3, the method of utilizing the instantaneous COP value regulating and controlling heat pump hot water system according to claim 1, it is characterized in that, in case described system instantaneous COP just switched to electrical heating with heat pump near 1 o'clock, be specially: after the performance test of finishing a certain type heat pump hot-water system, the f (t) that test is finished is directly inputted in the controller, reference frame as control action, during the system operate as normal, temperature sensor is at set intervals to environment temperature, condensation temperature and water temperature are gathered, the temperature signal of gathering is transported to controller, and calculate the speed f (t ') that water temperature rises, then with f (t ') and corresponding environment temperature, f (t) value that controller stores under water temperature and the condensation temperature is compared, when f (t ') 〉=f (t), be that system's instantaneous COP is near 1, controller sends control signal, and heat pump is closed, and heating mode is switched in the electrical heating.
4, the method of utilizing the instantaneous COP value regulating and controlling heat pump hot water system according to claim 1, it is characterized in that, described realization fault diagnosis, be specially: the f that obtains (t) is a series of value, if maximum is f (t1) in this series of values, be stored in the controller, temperature sensor is at set intervals to environment temperature, condensation temperature and water temperature are gathered, the temperature signal of gathering is transported to controller, and calculate the speed f (t ') that water temperature rises, then f (t1) value of f (t ') and controller storage is compared, when system the cold-producing medium leakage occurs or can't heat, at this moment heating speed can obviously descend or can not heat, then working as f (t ') 〉=f (t1) is that decision-making system has fault, and controller switches to the auxiliary heating mode of electricity with the heat pump pattern, just in time plays the effect of fault diagnosis, on control panel, show simultaneously fault to remind the user, under out of order situation, still guarantee user's normal use.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104654688A (en) * | 2015-02-11 | 2015-05-27 | 吕瑞强 | Control system of cold and heat source complementary multifunctional air conditioner water heater |
| CN105299905A (en) * | 2014-05-27 | 2016-02-03 | 珠海格力电器股份有限公司 | Air source water heater and control method and device of air source water heater |
| CN105716293A (en) * | 2016-04-06 | 2016-06-29 | 珠海格力电器股份有限公司 | Heating control method and device of air energy water heater |
| CN105757999A (en) * | 2016-04-06 | 2016-07-13 | 珠海格力电器股份有限公司 | Device and method for fault treatment of air-source water heater |
| CN107883624A (en) * | 2017-10-19 | 2018-04-06 | 广东芬尼克兹节能设备有限公司 | A kind of source pump stoppage protection control method |
| CN113758015A (en) * | 2021-08-27 | 2021-12-07 | 青岛经济技术开发区海尔热水器有限公司 | Control method of hot water system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004309084A (en) * | 2003-04-10 | 2004-11-04 | Matsushita Electric Ind Co Ltd | Heat pump type hot-water supply device |
| JP2004316996A (en) * | 2003-04-15 | 2004-11-11 | Mitsubishi Electric Corp | Heat pump water heater |
| CN2703228Y (en) * | 2004-05-17 | 2005-06-01 | 扬州市华扬新能源有限公司 | Air source hot pump water heater |
| CN1712844A (en) * | 2004-06-21 | 2005-12-28 | 乐金电子(天津)电器有限公司 | Heating circulation control of air conditioner with auxiliary heater |
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2006
- 2006-08-03 CN CNB2006100296824A patent/CN100434837C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299905A (en) * | 2014-05-27 | 2016-02-03 | 珠海格力电器股份有限公司 | Air source water heater and control method and device of air source water heater |
| CN104654688A (en) * | 2015-02-11 | 2015-05-27 | 吕瑞强 | Control system of cold and heat source complementary multifunctional air conditioner water heater |
| CN105716293A (en) * | 2016-04-06 | 2016-06-29 | 珠海格力电器股份有限公司 | Heating control method and device of air energy water heater |
| CN105757999A (en) * | 2016-04-06 | 2016-07-13 | 珠海格力电器股份有限公司 | Device and method for fault treatment of air-source water heater |
| CN107883624A (en) * | 2017-10-19 | 2018-04-06 | 广东芬尼克兹节能设备有限公司 | A kind of source pump stoppage protection control method |
| CN107883624B (en) * | 2017-10-19 | 2020-10-30 | 广东芬尼克兹节能设备有限公司 | Shutdown protection control method for heat pump unit |
| CN113758015A (en) * | 2021-08-27 | 2021-12-07 | 青岛经济技术开发区海尔热水器有限公司 | Control method of hot water system |
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Granted publication date: 20081119 Termination date: 20130803 |