CN104976774B - Control method and control system of heat pump water heater - Google Patents
Control method and control system of heat pump water heater Download PDFInfo
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- CN104976774B CN104976774B CN201410145414.3A CN201410145414A CN104976774B CN 104976774 B CN104976774 B CN 104976774B CN 201410145414 A CN201410145414 A CN 201410145414A CN 104976774 B CN104976774 B CN 104976774B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000009833 condensation Methods 0.000 claims abstract description 196
- 230000005494 condensation Effects 0.000 claims abstract description 196
- 238000001704 evaporation Methods 0.000 claims abstract description 178
- 239000003507 refrigerant Substances 0.000 claims abstract description 51
- 230000008020 evaporation Effects 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 16
- 239000002826 coolant Substances 0.000 claims description 8
- 239000008236 heating water Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000007664 blowing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000010025 steaming Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 230000036413 temperature sense Effects 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
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- Control Of Positive-Displacement Pumps (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a control method of a heat pump water heater, which comprises the following steps: acquiring a condensation temperature and an evaporation temperature, comparing the condensation temperature with a preset condensation temperature range, and comparing the evaporation temperature with a preset evaporation temperature range; according to the comparison result, the hydraulic refrigerant condensed by the condenser is guided into the compressor, or the air speed blowing to the evaporator is reduced, or the opening degree of a throttle valve arranged on a refrigerant pipeline between the condenser and the evaporator is reduced, or the stop is controlled. The control method provided by the invention can ensure that the real-time running state of the compressor of the air-source heat pump water heater is kept in a reliable running range, thereby ensuring the running reliability of the compressor and prolonging the service life of the compressor. The invention also provides a control system of the heat pump water heater.
Description
Technical field
The present invention relates to technical field of heat pumps, the control method and its control for more particularly relating to a kind of Teat pump boiler are
System.
Background technology
Air energy heat pump water heater, which can be absorbed into the low temperature heat energy in air, to be come, and height is converted into after compressor compresses
Warm energy, heats water temperature.Air energy heat pump water heater is because with prominent energy saving and larger water yield, receiving user's
Universal favorable comment.
In the prior art, since air energy heat pump water heater requires leaving water temperature to be not less than 55 DEG C, this causes air energy thermal
The condensation temperature of pump water heater is higher, and condensation temperature height is the performance that compressor is run at high load conditions.It is chronically at
Reliably and with long-term operation of the higher load condition to compressor is major test, and then causes the compressor event of air energy heat pump water heater
The problem of barrier rate is higher.
Therefore, how to ensure that the compressor real-time running state of air energy heat pump water heater is maintained at reliably operating status
In the range of, to ensure the reliability of compressor operating, the service life of compressor is improved, becomes those skilled in the art to be solved
Important technological problems certainly.
The content of the invention
In order to solve the above technical problem, the present invention provides a kind of control method of Teat pump boiler, pass through this method
It can ensure that the compressor real-time running state of air energy heat pump water heater is held at reliably in range of operation, and then ensure
The reliability of compressor operating, improves the service life of compressor.Present invention also offers a kind of control of Teat pump boiler
System, equally, can guarantee that the compressor real-time running state of air energy heat pump water heater is held at by the control system can
By in ground range of operation.
The control method of Teat pump boiler provided by the invention, including step：
Condensation temperature and evaporating temperature are obtained, and by the condensation temperature compared with default condensation temperature scope, will
The evaporating temperature and default evaporating temperature scope are compared；
If the condensation temperature is more than the maximum temperature of the default condensation temperature scope, and the evaporating temperature falls into institute
Default evaporating temperature scope is stated, then reduces target water temperature；
If the condensation temperature is more than the maximum temperature of the default condensation temperature scope, and the evaporating temperature is less than institute
The minimum temperature of default evaporating temperature scope is stated, then is imported the hydraulic pressure refrigerant condensed by condenser in compressor；
If the evaporating temperature is more than the maximum temperature of the default evaporating temperature scope, and the condensation temperature falls into institute
Default condensation temperature scope is stated, then reduces the wind speed blowed in evaporator；
If the evaporating temperature is more than the maximum temperature of the default evaporating temperature scope, and the condensation temperature is less than institute
The minimum value of default condensation temperature scope is stated, then reduces the throttle valve being arranged on the refrigerant pipeline between condenser and evaporator
Aperture；
If the condensation temperature is less than the minimum value of the default condensation temperature scope, and the evaporating temperature fall into it is described
Default evaporating temperature scope, then reduce the aperture for the throttle valve being arranged on the refrigerant pipeline between condenser and evaporator；
If the evaporating temperature is less than the minimum value of the default evaporating temperature scope, and the condensation temperature fall into it is described
Default condensation temperature scope, then obtain ambient temperature, and compared with default ambient temperature, if ambient temperature is small
In or equal to default ambient temperature, then shut down.
Preferably, if the condensation temperature is greater than or equal to default condensing temperature goals value, shut down；The default condensation
Temperature target is more than the maximum of the default condensation temperature scope.
Preferably, if the evaporating temperature is less than the minimum value of the default evaporating temperature scope, and the condensation temperature
Fall into the default condensation temperature scope, then detect evaporator whether frosting, if so, then removing frost；If it is not, then obtain external environment
Temperature, and compared with default ambient temperature, if ambient temperature is less than or equal to default ambient temperature, shut down.
Preferably, the default condensation temperature scope is 20 DEG C~68 DEG C.
Preferably, the default evaporating temperature scope is -30 DEG C~25 DEG C.
Preferably, the default ambient temperature is -28 DEG C~-24 DEG C.
Present invention also offers a kind of control system of Teat pump boiler, including：
For sensing the condensation temperature inductor of condensation temperature；
Evaporating temperature inductor for induction evaporation mode temperature；
For gaseous coolant to be condensed, and when condensing gaseous coolant liberated heat heating water temperature condenser；
The evaporator being connected with the condenser by cold medium main pipe, and the cold medium main pipe is equipped with throttle valve；
The auxiliary pipe of refrigerant being connected between the condenser and compressor, will in the condenser condensed liquid
Refrigerant is inputted to the compressor, and the auxiliary pipe of refrigerant is equipped with valving；
Processor, the processor are equipped with default condensation temperature scope and default evaporating temperature scope, and the processor
Communicably it is connected with the condensation temperature inductor and the evaporating temperature inductor, and can be by the condensation temperature sense
The condensation temperature that device senses is answered compared with default condensation temperature scope, the evaporation temperature that the evaporating temperature inductor is sensed
Degree and default evaporating temperature scope are compared；
If the condensation temperature is more than the maximum temperature of the default condensation temperature scope, and the evaporating temperature falls into institute
Default evaporating temperature scope is stated, then the processor control reduces target water temperature；
If the condensation temperature is more than the maximum temperature of the default condensation temperature scope, and the evaporating temperature is less than institute
The minimum temperature of default evaporating temperature scope is stated, then the processor controls the valving to open, so that liquid refrigerants is defeated
Enter to the compressor；
If the evaporating temperature is more than the maximum temperature of the default evaporating temperature scope, and the condensation temperature falls into institute
Default condensation temperature scope is stated, then the processor control reduces the rotating speed of evaporator fan；
If the evaporating temperature is more than the maximum temperature of the default evaporating temperature scope, and the condensation temperature is less than institute
The minimum value of default condensation temperature scope is stated, then the processor control reduces the aperture of the throttle valve；
If the condensation temperature is less than the minimum value of the default condensation temperature scope, and the evaporating temperature fall into it is described
The aperture of default evaporating temperature scope, then the processor reduction throttle valve；
If the evaporating temperature is less than the minimum value of the default evaporating temperature scope, and the condensation temperature fall into it is described
Default condensation temperature scope, then obtain ambient temperature, and compared with default ambient temperature, if ambient temperature is small
In or equal to default ambient temperature, then the processor, which controls, shuts down.
Preferably, the processor is additionally provided with default condensing temperature goals value, and the default condensing temperature goals value is more than
The maximum of the default condensation temperature scope；If the condensation temperature is greater than or equal to default condensing temperature goals value, institute
Processor control is stated to shut down.
Preferably, ambient temperature inductor for sensing ambient temperature is further included and for removing the steaming
The defroster of device appearance frosting is sent out, the processor is additionally provided with default ambient temperature；
If the evaporating temperature is less than the minimum value of the default evaporating temperature scope, and the condensation temperature fall into it is described
Default condensation temperature scope, then the processor control detection evaporator whether frosting, if so, then control the defroster into
Row removes frost；If it is not, then the processor obtains ambient temperature, and compared with default ambient temperature, if external environment
Temperature is less than or equal to default ambient temperature, then the processor control is shut down.
Preferably, it is additionally provided with expansion valve device on the auxiliary pipe of the refrigerant.
By the control method of Teat pump boiler provided by the invention, when condensation temperature is more than default condensation temperature scope
Maximum temperature, and when evaporating temperature falls into default evaporating temperature scope, then control air-conditioning system to reduce target water temperature, that is, reduce being intended to
The temperature for reaching the water temperature in heat-pump water-heater water tank, in this way, the load of compressor can be reduced；Preset when condensation temperature is more than
The maximum temperature of condensation temperature scope, and when evaporating temperature is less than the minimum temperature of default evaporating temperature scope, then will be through supercooling
The hydraulic pressure refrigerant that condenser condenses is imported in compressor, so condensation temperature and evaporating temperature can be made to be maintained in normal range (NR),
And compressor exhaust temperature can be reduced, to avoid scaling loss compressor；When evaporating temperature is more than default evaporating temperature scope
Maximum temperature, and when condensation temperature falls into default condensation temperature scope, then control reduces the wind speed blowed in evaporator, so as to steam
Sending out device temperature reduces, and then ensures that condensation temperature and evaporating temperature are maintained in the range of reliably；Preset when evaporating temperature is more than
The maximum temperature of evaporating temperature scope, and condensation temperature is less than the minimum value of default condensation temperature scope, then reduction is arranged at cold
The aperture of the throttle valve on refrigerant pipeline between condenser and evaporator, and then reduce the liquid refrigerants that condenser flows to evaporator
Flow, so condensation temperature and evaporating temperature can be made to be maintained in confidence band；If condensation temperature is less than default condensation temperature
The minimum value of scope, and evaporating temperature falls into default evaporating temperature scope, then reduces and be arranged between condenser and evaporator
The aperture of throttle valve on refrigerant pipeline, can so lift condensation temperature, condensation temperature and evaporating temperature is maintained at reliable model
In enclosing；If evaporating temperature is less than the minimum value of default evaporating temperature scope, and condensation temperature falls into default condensation temperature scope, then
Ambient temperature is obtained, and compared with default ambient temperature, if ambient temperature is less than or equal to default extraneous temperature
Degree, then shut down, prevent compressor damage.As it can be seen that by the control method of Teat pump boiler provided by the invention, condensation can be made
Temperature and evaporating temperature are remained in confidence band, and then can ensure that the compressor of air energy heat pump water heater is transported in real time
Row state is held at reliably in range of operation, compressor operating is had higher reliability, is improved making for compressor
Use the service life.
Brief description of the drawings
Fig. 1 is the control system schematic diagram of Teat pump boiler in the specific embodiment of the invention；
Fig. 2 is a kind of condensation temperature of Teat pump boiler in the specific embodiment of the invention and the reliable model of evaporating temperature
Enclose schematic diagram；
In Fig. 1：
Condensation temperature inductor -11, evaporating temperature inductor -12, condenser -13, cold medium main pipe -14, throttling
Valve -15, auxiliary pipe -16 of refrigerant, valving -17, compressor -18, environment temperature inductor -19, wind turbine -20, evaporation
Device -21.
Embodiment
Present embodiment provides a kind of control method of Teat pump boiler, can ensure air energy by this method
The compressor real-time running state of Teat pump boiler is held at reliably in range of operation, so ensure compressor operating can
By property, the service life of compressor is improved.Present embodiment additionally provides a kind of control system of Teat pump boiler, together
Sample, can guarantee that the compressor real-time running state of air energy heat pump water heater is held at by the control system and reliably runs
In the range of.
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
The control method for the Teat pump boiler that present embodiment provides, including step：
Condensation temperature and evaporating temperature are obtained, and condensation temperature will be evaporated compared with default condensation temperature scope
Temperature and default evaporating temperature scope are compared；
If condensation temperature is more than the maximum temperature of default condensation temperature scope, and evaporating temperature falls into default evaporating temperature model
Enclose, then reduce target water temperature；
If condensation temperature is more than the maximum temperature of default condensation temperature scope, and evaporating temperature is less than default evaporating temperature model
The minimum temperature enclosed, then import the hydraulic pressure refrigerant condensed by condenser in compressor；
If evaporating temperature is more than the maximum temperature of default evaporating temperature scope, and condensation temperature falls into default condensation temperature model
Enclose, then reduce the wind speed blowed in evaporator；
If evaporating temperature is more than the maximum temperature of default evaporating temperature scope, and condensation temperature is less than default condensation temperature model
The minimum value enclosed, then reduce the aperture for the throttle valve being arranged on the refrigerant pipeline between condenser and evaporator；
If condensation temperature is less than the minimum value of default condensation temperature scope, and evaporating temperature falls into default evaporating temperature model
Enclose, then reduce the aperture for the throttle valve being arranged on the refrigerant pipeline between condenser and evaporator；
If evaporating temperature is less than the minimum value of default evaporating temperature scope, and condensation temperature falls into default condensation temperature model
Enclose, then obtain ambient temperature, and compared with default ambient temperature, if ambient temperature is less than or equal to outside default
Boundary's temperature, then shut down.
Those skilled in the art are it is understood that condensation temperature and evaporating temperature are to influence the important ginseng of compressor behavior
Number.
Please refer to Fig.2, Fig. 2 is the condensation temperature and evaporation temperature of a kind of Teat pump boiler in the specific embodiment of the invention
The confidence band schematic diagram of degree.
In Fig. 2, ordinate is condensation temperature, and abscissa is evaporating temperature.During heat pump water heater system actual motion, compression
The condensation temperature and evaporating temperature of machine correspond to a point on figure.When condensation temperature exceedes upper border line, then it is assumed that condensation
Temperature is higher, during more than following boundary line, then it is assumed that condensation temperature is relatively low；Equally, when evaporating temperature exceedes the right boundary line, then recognize
It is higher for evaporating temperature, during more than left side boundary line, then it is assumed that evaporating temperature is relatively low；When evaporating temperature and condensation temperature fall in figure
When within the temperature profile range of closing, then it is assumed that condensation temperature and evaporating temperature are in confidence band.
The control method of the Teat pump boiler provided by present embodiment, when condensation temperature is more than default condensation temperature
The maximum temperature of scope is spent, and when evaporating temperature falls into default evaporating temperature scope, then controls air-conditioning system to reduce target water temperature,
Reduce the temperature that the water temperature in heat-pump water-heater water tank to be made reaches.It should be noted that above-mentioned default condensation temperature scope
It can be 20 DEG C~68 DEG C, the maximum temperature of the default condensation temperature scope is exactly 68 DEG C, presets the minimum of condensation temperature scope
Value is 20 DEG C.Default evaporating temperature scope can be -30 DEG C~25 DEG C, and the maximum temperature of the default evaporating temperature scope is exactly 25
DEG C, minimum value is -30 DEG C.Certainly, above-mentioned default condensation temperature scope and default evaporating temperature scope can be according to actual conditions
Specific setting, present embodiment are not specifically limited.In this way, the load of compressor can be reduced.
When maximum temperature of the condensation temperature more than default condensation temperature scope, and evaporating temperature is less than default evaporating temperature model
During the minimum temperature enclosed, then the fraction hydraulic pressure refrigerant condensed by condenser is introduced directly into compressor, can so made
Condensation temperature and evaporating temperature are maintained in normal range (NR), and can reduce compressor exhaust temperature, are compressed to avoid scaling loss
Machine.
When maximum temperature of the evaporating temperature more than default evaporating temperature scope, and condensation temperature falls into default condensation temperature model
When enclosing, then control reduces the wind speed blowed in evaporator, so that evaporator temperature reduces, and then ensures condensation temperature and evaporation temperature
Degree is maintained in the range of reliably.
When maximum temperature of the evaporating temperature more than default evaporating temperature scope, and condensation temperature is less than default condensation temperature model
The minimum value enclosed, then reduce the aperture for the throttle valve being arranged on the refrigerant pipeline between condenser and evaporator, and then reduces
Condenser flows to the flow of the liquid refrigerants of evaporator, so condensation temperature and evaporating temperature can be made to be maintained in confidence band.
If condensation temperature is less than the minimum value of default condensation temperature scope, and evaporating temperature falls into default evaporating temperature model
Enclose, then reduce the aperture for the throttle valve being arranged on the refrigerant pipeline between condenser and evaporator, can so lift condensation temperature
Degree, makes condensation temperature and evaporating temperature be maintained in confidence band.
If evaporating temperature is less than the minimum value of default evaporating temperature scope, and condensation temperature falls into default condensation temperature model
Enclose, then obtain ambient temperature, and compared with default ambient temperature, if ambient temperature is less than or equal to outside default
Boundary's temperature, then shut down, and prevents compressor damage.It should be noted that above-mentioned default ambient temperature is -28 DEG C~-24 DEG C, than
Such as, it can be specially -26 DEG C, certainly, or other temperature, default ambient temperature can specifically be set according to actual conditions.
As it can be seen that the control method of the Teat pump boiler provided by present embodiment, can make condensation temperature and steaming
Hair temperature is remained in confidence band, and then can ensure the compressor real-time running state of air energy heat pump water heater all
It is maintained at reliably in range of operation, makes compressor operating that there is higher reliability, improves the service life of compressor.
In the preferred solution of present embodiment, if condensation temperature is greater than or equal to default condensing temperature goals value,
Shut down；Default condensing temperature goals value is more than the maximum of default condensation temperature scope.For example default condensation temperature scope is most
When big value is 68 DEG C, default condensing temperature goals value can be arranged to 70 DEG C, when condensation temperature is greater than or equal to 70 DEG C, heat pump
Water heater is then shut down.In this way, when condensation temperature is very high, can self-stopping processing.To prevent scaling loss compressor.
In another preferred solution of present embodiment, if evaporating temperature is less than the minimum of default evaporating temperature scope
Value, and condensation temperature falls into default condensation temperature scope, then detect evaporator whether frosting, if so, then removing frost；If it is not, then obtain
Ambient temperature is taken, and compared with default ambient temperature, if ambient temperature is less than or equal to default ambient temperature,
Then shut down.
In this way, when evaporating temperature is relatively low, meeting is it is first determined whether be due to evaporating temperature caused by evaporimeter frosting
The problem of relatively low, if so, then carrying out defrosting processing, then judge whether because ambient temperature is too low, and causes evaporating temperature too low
Problem, if causing evaporating temperature too low because ambient temperature is too low, then carries out shutdown processing, in order to avoid compressor is caused
Damage.
Please referring to Fig.1, present embodiment additionally provides a kind of control system of Teat pump boiler, including for sensing
The condensation temperature inductor 11 of condensation temperature；
Evaporating temperature inductor 12 for induction evaporation mode temperature；
For gaseous coolant to be condensed, and when condensing gaseous coolant liberated heat heating water temperature condenser
13；
The evaporator 21 being connected with condenser 13 by cold medium main pipe 14, and cold medium main pipe 14 is equipped with throttle valve 15；
The auxiliary pipe 16 of refrigerant being connected between condenser 13 and compressor 18, will in condenser 13 condensed liquid
Refrigerant is inputted to compressor 18, and the auxiliary pipe 16 of refrigerant is equipped with valving 17, which can be solenoid valve.
It should be noted that the condenser 13 that present embodiment provides is arranged in water tank, pass through 18 shape of compressor
Into high pressure gaseous refrigerant carry out heat exchange with the water in water tank in the condenser 13, to realize the purpose of heating water temperature,
Meanwhile gaseous coolant is condensed into liquid refrigerants.Liquid refrigerants is converted to the liquid refrigerant stream of low-pressure low-temperature after throttle valve 15
Enter in evaporator 21, evaporator 21 is typically provided with wind turbine 20, to promote air flow, accelerates the liquid refrigerants and sky of low-temp low-pressure
Gas carries out heat exchange, the liquid refrigerants in evaporator 21 is converted to gaseous coolant by thermal evaporation.Above-mentioned condensation temperature inductor
11 can be installed on the refrigerant pipeline being connected with compressor outlet, and evaporating temperature inductor 12 can be installed on and compressor
On the refrigerant pipeline that entrance is connected.
The Teat pump boiler that present embodiment provides further includes processor, and processor is equipped with default condensation temperature scope
With default evaporating temperature scope, and processor is communicably connected with condensation temperature inductor 11 and evaporating temperature inductor 12
Connect, and can be by the condensation temperature that condensation temperature inductor 11 senses compared with default condensation temperature scope, by evaporation temperature
The evaporating temperature and default evaporating temperature scope that degree inductor 12 senses are compared；
If condensation temperature is more than the maximum temperature of default condensation temperature scope, and evaporating temperature falls into default evaporating temperature model
Enclose, then processor control reduces target water temperature；
If condensation temperature is more than the maximum temperature of default condensation temperature scope, and evaporating temperature is less than default evaporating temperature model
The minimum temperature enclosed, then processor control valve device 17 is opened, so that the liquid refrigerants of fraction is inputted to compressor 18,
It should be noted that if input is excessive to the liquid refrigerants amount in compressor, it may appear that the problem of liquid hammer；
If evaporating temperature is more than the maximum temperature of default evaporating temperature scope, and condensation temperature falls into default condensation temperature model
Enclose, then processor control reduces the rotating speed of 21 wind turbine of evaporator；
If evaporating temperature is more than the maximum temperature of default evaporating temperature scope, and condensation temperature is less than default condensation temperature model
The minimum value enclosed, then processor control reduce the aperture of throttle valve 15；
If condensation temperature is less than the minimum value of default condensation temperature scope, and evaporating temperature falls into default evaporating temperature model
Enclose, then processor reduces the aperture of throttle valve 15；
If evaporating temperature is less than the minimum value of default evaporating temperature scope, and condensation temperature falls into default condensation temperature model
Enclose, then obtain ambient temperature, and compared with default ambient temperature, if ambient temperature is less than or equal to outside default
Boundary's temperature, then processor control are shut down.
So set, the control system for the Teat pump boiler that present embodiment provides, can make condensation temperature and steaming
Hair temperature is remained in confidence band, and then can ensure 18 real-time running state of compressor of air energy heat pump water heater
It is held at reliably in range of operation, makes the operation of compressor 18 that there is higher reliability, improve the use of compressor 18
Service life.The derivation of the beneficial effect is substantially similar with the derivation of beneficial effect caused by above-mentioned control method, therefore
Repeat no more herein.
In addition, in the preferred solution of present embodiment, processor is additionally provided with default condensing temperature goals value, presets cold
Solidifying temperature target is more than the maximum of default condensation temperature scope；If condensation temperature is greater than or equal to default condensing temperature goals
Value, then processor control are shut down.
So set, when condensation temperature is greater than or equal to default condensing temperature goals value, processor control is shut down.So
Set, when condensation temperature is very high, meeting self-stopping processing, to prevent scaling loss compressor 18.
In another preferred solution of present embodiment, the external environment temperature for sensing ambient temperature is further included
Degree inductor 19 and the defroster for removing 21 appearance frosting of evaporator, processor are additionally provided with default ambient temperature；
If evaporating temperature is less than the minimum value of default evaporating temperature scope, and condensation temperature falls into default condensation temperature model
Enclose, then processor control detection evaporator 21 whether frosting, if so, then control defroster carry out frost；If it is not, then processor
Ambient temperature is obtained, and compared with default ambient temperature, if ambient temperature is less than or equal to default extraneous temperature
Degree, then processor control are shut down.
So set, when evaporating temperature is relatively low, processor meeting is it is first determined whether being due to 21 frosting of evaporator and leading
The problem of evaporating temperature of cause is relatively low, if so, then control defroster carries out defrosting processing.If not, judge whether again because outer
Boundary's temperature is too low, and the problem of cause evaporating temperature too low, if causing evaporating temperature too low because ambient temperature is too low,
Shutdown processing is then carried out, in order to avoid compressor 18 is caused to damage.
In addition, in another preferred solution that present embodiment provides, expansion valve dress is also provided with the auxiliary pipe of refrigerant
Put.So set, liquid refrigerants can enter back into compressor after the decompression of expansion valve device, be conducive to the steady of compressor operating
It is qualitative.
The control method and control device of a kind of Teat pump boiler provided by the present invention are described in detail above,
Specific case used herein is set forth the principle of the present invention and embodiment, and the explanation of above example is simply used
Understand the method and its core concept of the present invention in help.It should be pointed out that for those skilled in the art,
Without departing from the principle of the present invention, some improvement and modification can also be carried out to the present invention, these are improved and modification
Fall into the protection domain of the claims in the present invention.
Claims (10)
1. a kind of control method of Teat pump boiler, it is characterised in that including step：
Condensation temperature and evaporating temperature are obtained, and by the condensation temperature compared with default condensation temperature scope, by described in
Evaporating temperature and default evaporating temperature scope are compared, and the condensation temperature refers to the refrigerant pipeline being connected with compressor outlet
Interior refrigerant temperature, the evaporating temperature refer to the refrigerant temperature in the refrigerant pipeline that is connected with suction port of compressor；
If the condensation temperature be more than the default condensation temperature scope maximum temperature, and the evaporating temperature fall into it is described pre-
If evaporating temperature scope, then reduce target water temperature；
If the condensation temperature is more than the maximum temperature of the default condensation temperature scope, and the evaporating temperature is less than described pre-
If the minimum temperature of evaporating temperature scope, then the hydraulic pressure refrigerant condensed by condenser is imported in compressor；
If the evaporating temperature be more than the default evaporating temperature scope maximum temperature, and the condensation temperature fall into it is described pre-
If condensation temperature scope, then the wind speed blowed in evaporator is reduced；
If the evaporating temperature is more than the maximum temperature of the default evaporating temperature scope, and the condensation temperature is less than described pre-
If the minimum value of condensation temperature scope, then reduce the throttle valve being arranged on the refrigerant pipeline between condenser and evaporator and open
Degree；
If the condensation temperature is less than the minimum value of the default condensation temperature scope, and the evaporating temperature falls into described preset
Evaporating temperature scope, then reduce the aperture for the throttle valve being arranged on the refrigerant pipeline between condenser and evaporator；
If the evaporating temperature is less than the minimum value of the default evaporating temperature scope, and the condensation temperature falls into described preset
Condensation temperature scope, then obtain ambient temperature, and compared with default ambient temperature, if ambient temperature be less than or
Equal to default ambient temperature, then shut down.
2. control method as claimed in claim 1, it is characterised in that if the condensation temperature is greater than or equal to default condensation temperature
Desired value is spent, then is shut down；The default condensing temperature goals value is more than the maximum of the default condensation temperature scope.
3. control method as claimed in claim 1, it is characterised in that if the evaporating temperature is less than the default evaporating temperature
The minimum value of scope, and the condensation temperature falls into the default condensation temperature scope, then detect evaporator whether frosting, if
It is then to remove frost；If it is not, ambient temperature is then obtained, and compared with default ambient temperature, if ambient temperature is less than
Or equal to default ambient temperature, then shut down.
4. control method as claimed in claim 1, it is characterised in that the default condensation temperature scope is 20 DEG C~68 DEG C.
5. control method as claimed in claim 4, it is characterised in that the default evaporating temperature scope is -30 DEG C~25 DEG C.
6. control method as claimed in claim 2, it is characterised in that the default ambient temperature is -28 DEG C~-24 DEG C.
A kind of 7. control system of Teat pump boiler, it is characterised in that including：
For sensing the condensation temperature inductor of condensation temperature；
Evaporating temperature inductor for induction evaporation mode temperature；
Need to obtain condensation temperature and evaporating temperature, condensation temperature is the refrigerant temperature at exhaust outlet of compressor, evaporating temperature
For refrigerant temperature at compressor air suction mouth；
For gaseous coolant to be condensed, and when condensing gaseous coolant liberated heat heating water temperature condenser；
The evaporator being connected with the condenser by cold medium main pipe, and the cold medium main pipe is equipped with throttle valve；
The auxiliary pipe of refrigerant being connected between the condenser and compressor, will in the condenser condensed liquid refrigerants
In input to the compressor, the auxiliary pipe of refrigerant is equipped with valving；
Processor, the processor are equipped with default condensation temperature scope and default evaporating temperature scope, and the processor and institute
Condensation temperature inductor is stated with the evaporating temperature inductor to be communicably connected, and can be by the condensation temperature inductor
The condensation temperature of sensing compared with default condensation temperature scope, by the evaporating temperature inductor sensing evaporating temperature and
Default evaporating temperature scope is compared；
If the condensation temperature be more than the default condensation temperature scope maximum temperature, and the evaporating temperature fall into it is described pre-
If evaporating temperature scope, then the processor control reduces target water temperature；
If the condensation temperature is more than the maximum temperature of the default condensation temperature scope, and the evaporating temperature is less than described pre-
If the minimum temperature of evaporating temperature scope, then the processor controls the valving to open so that liquid refrigerants input to
In the compressor；
If the evaporating temperature be more than the default evaporating temperature scope maximum temperature, and the condensation temperature fall into it is described pre-
If condensation temperature scope, then the processor control reduces the rotating speed of evaporator fan；
If the evaporating temperature is more than the maximum temperature of the default evaporating temperature scope, and the condensation temperature is less than described pre-
If the minimum value of condensation temperature scope, then the processor control reduces the aperture of the throttle valve；
If the condensation temperature is less than the minimum value of the default condensation temperature scope, and the evaporating temperature falls into described preset
The aperture of evaporating temperature scope, then the processor reduction throttle valve；
If the evaporating temperature is less than the minimum value of the default evaporating temperature scope, and the condensation temperature falls into described preset
Condensation temperature scope, then obtain ambient temperature, and compared with default ambient temperature, if ambient temperature be less than or
Equal to default ambient temperature, then the processor control is shut down.
8. control system as claimed in claim 7, it is characterised in that the processor is additionally provided with default condensing temperature goals
Value, the default condensing temperature goals value are more than the maximum of the default condensation temperature scope；If the condensation temperature is more than
Or shut down equal to default condensing temperature goals value, then the processor control.
9. control system as claimed in claim 7, it is characterised in that further include the extraneous ring for sensing ambient temperature
Border temperature inductor and the defroster for removing the evaporator appearance frosting, the processor are additionally provided with default extraneous temperature
Degree；
If the evaporating temperature is less than the minimum value of the default evaporating temperature scope, and the condensation temperature falls into described preset
Condensation temperature scope, then processor control detection evaporator whether frosting, if so, then controlling the defroster to be gone
Frost；If it is not, then the processor obtains ambient temperature, and compared with default ambient temperature, if ambient temperature
Less than or equal to default ambient temperature, then the processor control is shut down.
10. control system as claimed in claim 7, it is characterised in that be additionally provided with expansion valve device on the auxiliary pipe of refrigerant.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410145414.3A CN104976774B (en) | 2014-04-11 | 2014-04-11 | Control method and control system of heat pump water heater |
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|---|---|---|---|
| CN201410145414.3A CN104976774B (en) | 2014-04-11 | 2014-04-11 | Control method and control system of heat pump water heater |
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| CN104976774B true CN104976774B (en) | 2018-04-20 |
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| CN107796122B (en) * | 2016-09-06 | 2021-07-23 | 艾欧史密斯(中国)热水器有限公司 | Heat pump water heater and control method thereof |
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|---|---|---|---|---|
| CN201417014Y (en) * | 2009-06-11 | 2010-03-03 | 苏州大学 | Air source heat pump water heater |
| CN102313358A (en) * | 2010-07-01 | 2012-01-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Control method for exhaust pressure of carbon-dioxide heat-pump water heater |
| CN202188633U (en) * | 2011-08-18 | 2012-04-11 | Tcl空调器(中山)有限公司 | Air source heat pump water heater |
| CN103575005A (en) * | 2012-08-06 | 2014-02-12 | 青岛海尔空调电子有限公司 | Method and device for regulating exhaust temperature of compressor |
| CN203489476U (en) * | 2013-09-09 | 2014-03-19 | 珠海格力电器股份有限公司 | Air energy water heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5380226B2 (en) * | 2009-09-25 | 2014-01-08 | 株式会社日立製作所 | Air conditioning and hot water supply system and heat pump unit |
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2014
- 2014-04-11 CN CN201410145414.3A patent/CN104976774B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201417014Y (en) * | 2009-06-11 | 2010-03-03 | 苏州大学 | Air source heat pump water heater |
| CN102313358A (en) * | 2010-07-01 | 2012-01-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Control method for exhaust pressure of carbon-dioxide heat-pump water heater |
| CN202188633U (en) * | 2011-08-18 | 2012-04-11 | Tcl空调器(中山)有限公司 | Air source heat pump water heater |
| CN103575005A (en) * | 2012-08-06 | 2014-02-12 | 青岛海尔空调电子有限公司 | Method and device for regulating exhaust temperature of compressor |
| CN203489476U (en) * | 2013-09-09 | 2014-03-19 | 珠海格力电器股份有限公司 | Air energy water heater |
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