CN100541062C - The control method of air regulator - Google Patents
The control method of air regulator Download PDFInfo
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- CN100541062C CN100541062C CNB2005100144278A CN200510014427A CN100541062C CN 100541062 C CN100541062 C CN 100541062C CN B2005100144278 A CNB2005100144278 A CN B2005100144278A CN 200510014427 A CN200510014427 A CN 200510014427A CN 100541062 C CN100541062 C CN 100541062C
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Abstract
The control method of air regulator of the present invention comprises that heating circulation reaches after the driven state, the 1st stage that the difference value of outdoor intake air temperature and outdoor conduit temperature stores in the average certain hour; The 2nd stage that the difference value of interior outdoor intake air temperature of average certain hour and outdoor conduit temperature stores after above-mentioned the 1st stage; The difference of the value that value that more above-mentioned the 2nd stage stores and the 1st stage store more than specified scope in, be judged as the 3rd stage that off-premises station frost.According to the control method of air regulator as mentioned above, can carry out the defrosting running effectively and improving the performance that heats running.
Description
Technical field
The invention relates to the control method of air regulator, more detailed be about, according to off-premises station white state carry out the defrosting running effectively, can improve the control method of the air regulator that heats behavior in service.
Background technology
Air regulator is according to purposes, purpose indoor air to be kept the device of suitable state.That is, be adjusted to nice and cool refrigerating state indoor summer, and be adjusted to warm heat state indoor winter.In addition, the humidity in the air regulator conditioning chamber, the air in the conditioning chamber becomes comfortable peace and quiet state.
As above-mentioned, utilize a device to use with heating combined equipment winter, by contrary circulate of cooling operation realize heat circulation when using with refrigerating plant summer, realizes kind of refrigeration cycle by the contrary circulation that heats running equally.
Fig. 1 is the structure chart of the kind of refrigeration cycle of general air regulator.
With reference to Fig. 1, general air regulator comprises, when heating running to the indoor set 50 of the heat exchanger 10 of indoor discharge warm braw.In addition, air regulator comprises the compressor 20 that generates the HTHP refrigerant again, and the refrigerant that recycle compressor 20 compresses is discharged the heat exchanger 30 of cold wind and the off-premises station 60 of cross valve 40 formations that the conversion cooling and warming circulates through expansion valve 25 release heat absorptions to the outside.
Above-mentioned air regulator is controlled cross valve 40 and is formed and heat operation cycle under the control of controller.At this moment, circulation generates the HTHP refrigerants from compressor 20 compression, carries out discharging warm braw after the heat exchange at the heat exchanger 10 and the room air of indoor set 50, discharges cold wind by the heat exchanger 30 of off-premises station 60 simultaneously.
In addition, above-mentioned air regulator is also to form the cooling operation circulation under the control of controller.At this moment, the HTHP refrigerant that circulation produces from compressor 20 carries out discharging cold wind after the heat exchange at the heat exchanger 10 and the room air of indoor set 50, and the heat exchanger 30 of off-premises station 60 is discharged warm braws simultaneously.
And air regulator is in order to replenish indoor set 50 and off-premises station 60 heat-exchange capacities, be provided with the fan that causes air to flow.That is, have indoor fan 15 on the heat exchanger 10 of indoor set 50 sides, have outdoor fan 35 on the heat exchanger 30 of off-premises station 60 sides.
Such fan plays, the booster action of the heat exchange action between refrigerant and the air that promotes to flow in heat exchanger.
In addition, when air regulator was carried out and to be heated running, below outdoor environment is the apparent freezing point temperature and have in a certain amount of moisture, the dewdrop that produces on the outdoor heat exchanger 30 that exposes on the outdoor environment froze gradually.Thereupon, air regulator continues to heat running, then the icing problem of the heat-exchange surface of generation chamber outside heat exchangers 30.
The temperature of the discharge air of the heat exchanger 10 by reducing the indoor that freezes like this reduces heat-production functions.In order to end above-mentioned freezing in the side,, the outdoor environment below apparent freezing point is necessary to carry out the defrosting running at certain intervals for also continuing to heat running.
Above-mentioned defrosting running means, for the freezing of the heat exchanger face that prevents off-premises station 60, carries out cooling operation at the appointed time in the middle of execution heats running.
At this moment carry out the heat exchanger 30 of the off-premises station 60 of above-mentioned cooling operation and discharge warm braw, remove the frost that covers heat-exchange surface according to the heat that at this moment takes place.
Fig. 2 illustrates the action flow chart according to the air regulator control method of prior art.
With reference to Fig. 2, under the control of controller, control cross valve 40 is in heating operation cycle, and then the HTHP refrigerant that produces from compressor 20 circulates to indoor set 50 heat exchangers 10 sides.
At this moment, indoor set 50 heat exchangers 10 make between indoor air and the refrigerant and heat exchange to take place and to indoor discharge warm braw.
The refrigerant of above-mentioned indoor set 50 heat exchangers 10 of process circulates to compressor 20 sides again by the heat exchanger 30 of expansion valve 25 off-premises stations 60.At this moment, the heat exchanger 30 of off-premises station 60 is to outdoor discharge cold wind.
As above-mentioned, heat in execution under the state of running, heat exchanger 30 temperature of off-premises station 60 are low, thus its suck that moisture that air contains in the air when carrying out heat exchange solidifies and on heat exchanger and frost.
On the heat exchanger 30 of above-mentioned off-premises station 60 behind the frost, then block the ventilating opening that sucks air and can not carry out heat exchange smoothly and reduce heating capacity, reduce the conduit temperature of outdoor heat converter.
Thereupon, carrying out and heating running more than the certain hour was 100 stages, and back controller is read outdoor conduit temperature from being installed in off-premises station 60 supravasal temperature sensors.
The temperature of reading like this is in this way below assigned temperature T1 ℃, and then controller is being judged as on the heat exchanger 30 of off-premises station 60 frost.110 stages
Thereupon, controller control cross valve 40 makes the refrigerant cyclic transformation become 120 stages of kind of refrigeration cycle.And, begin defrosting 130 stages of running.Above-mentioned 130 stages are carried out the defrosting running, and then the heat exchanger 30 of off-premises station 60 sides moves and emit heat with condenser, and liberated heat is removed the frost of covering on heat-exchange surface like this.
In addition, controller calculates the duration of runs of defrosting from carrying out above-mentioned defrosting running initial point.And monitor whether to reach the designated duration set.In addition, controller is carried out above-mentioned defrosting running and is monitored the conduit temperature of off-premises station 60 reaches whether set assigned temperature.
That is, above-mentioned controller monitors that above-mentioned defrosting reaches fixed time of having set the duration of runs or the conduit temperature of off-premises station 60 reaches whether set assigned temperature, and decision heats the execution initial point of running again.
Stop defrosting 140 stages of running like this, then controller control cross valve 40 is from newly to heating cyclic transformation.And heat 150 stages of running.
That is, former air regulator heat running, after the running certain hour, the temperature of outdoor catheter sensor is below certain value T1 ℃, the heat exchanger that is judged as off-premises station frost, make to be controlled to and carry out the defrosting running.
But, determine the former air regulator of defrosting running initial point to heat running according to temperature and control the following problem that has as above-mentioned outdoor catheter sensor.
When execution heated running, when outdoor temperature was subzero, the absolute humidity amount that outdoor air contains was low, on the heat exchanger 30 of off-premises station 60 not frost, but outdoor conduit temperature detects to subzero.
So air regulator in the past serves as a basis control defrosting running initial point with outdoor conduit temperature only, promptly stops heating running according to the conduit temperature that reduces, and carries out the defrosting running.
In addition as mentioned above, former air regulator, when outdoor temperature is subzero, although the heat exchanger 30 of off-premises station 60 is not having frost, also frequent execution defrosting running.Therefore can not continue to provide to the user between defrosting running to heat running, that causes the user reduce competitiveness of product soon.
In addition, former air regulator when outdoor temperature is subzero, consumes the running efficiency that heats that reduces product because of the frequent change action that heats running and defrosting running increases electric power.
Summary of the invention
The present invention invents in order to solve above-mentioned prior art problems, the objective of the invention is to, provide a kind of according to off-premises station white state carry out the control method that defrosting running improves the air regulator that heats behavior in service effectively.
In order to achieve the above object, the control method according to air regulator of the present invention includes: heat circulation and reach after the driven state, the 1st stage that the outdoor intake air temperature in the average certain hour and the difference value of outdoor conduit temperature store; The 2nd stage that the difference value of interior outdoor inlet temperature of certain hour and outdoor conduit temperature stores after average above-mentioned the 1st stage; Relatively the difference of the value that stores of value that stores in above-mentioned the 2nd stage and above-mentioned the 1st stage be more than specified scope in, be judged as off-premises station the 3rd stage of frost.
According to the scheme that as above proposes, the control method of air regulator of the present invention implements to carry out effectively the defrosting running can improve the performance that heats running.
Advantage and good effect: the as above control method according to air regulator of the present invention of Gou Chenging, environment is under the condition of low temperature around, outdoor conduit temperature be reduced to subzero also correctly perception off-premises station heat exchanger frost whether, if frost time, carry out the reduction that fixed time defrosting running prevents to heat running ability.
In addition, the control method of air regulator of the present invention correctly perception off-premises station heat exchanger frost, avoid carrying out unnecessary defrosting running, so can guarantee the reliability of product, provide sufficient heating effect to the user.
Description of drawings
Fig. 1 is the structure chart of the refrigerant circulation of general air regulator,
Fig. 2 is the action flow chart of the air regulator control method of prior art,
Heat the control structure figure of running in Fig. 3 air regulator of the present invention,
Fig. 4 is the flow chart that heats running of air regulator of the present invention.
The explanation of accompanying drawing major part symbol
200: control part 210: the cross valve switching part
220: outdoor fan drive division 230: driven compressor portion
240: outdoor inlet temperature detecting element 250: outdoor conduit temperature detecting element
The specific embodiment
Below, be elaborated with reference to the appended figure of possible embodiments of the present invention.
Fig. 3 is according to the control structure figure that heats running in the air regulator of the present invention.
And the kind of refrigeration cycle formation to air regulator in the explanation of the present invention describes with reference to Fig. 1.
General kind of refrigeration cycle as shown in Figure 1, constitutes through the refrigerant connecting duct that all said structures are connected by compressor 20, outdoor heat converter 30, expansion valve 25, indoor heat converter 10 with from above-mentioned indoor heat converter 10.
That is, above-mentioned each structure makes the refrigerant that flows in the refrigerant connecting duct of process carry out state variation to absorb or emit the heat that comprises in the room air.The state that the temperature that such running action can make the user obtain room air improves or reduces.
From such formation, air regulator of the present invention is controlled cross valve 40 and is formed and heat operation cycle under the control of control part 200 described later.
At this moment, the HTHP refrigerant that circulates in compressor 20 generations makes the heat exchanger 10 of indoor set 50 discharge warm braws, and the heat exchanger 30 of off-premises station 60 is discharged cold wind.
In addition, air regulator of the present invention is controlled cross valve 40 and is formed the cooling operation circulation under the control of control part 200.
At this moment, circulate in the HTHP refrigerant that compressor 20 produces, make the heat exchanger 10 of indoor set 50 discharge cold wind, the heat exchanger 30 of off-premises station 60 is to discharge warm braw.
Air regulator of the present invention has the fan that causes air to flow in order to increase heat-exchange capacity for indoor set 50 and off-premises station 60.
That is, have indoor fan 15 on the heat exchanger 10 of indoor set 50 sides, have outdoor fan 35 on the heat exchanger 30 of off-premises station 60 sides.
Such fan plays the refrigerant that promotion flows and the instrumentality of the heat exchange action between the air in heat exchanger.
Drive as above-mentioned refrigerant circulates that to constitute the control that heats running and constitute the defrosting running be to be made of control part shown in Figure 3 200.
Above-mentioned control part 200 cognitive users select heats operation mode or cooling operation pattern and controls the driving of refrigerant circulation according to the operation mode that the user selects.
The switching of cooling and warming pattern is to be made of the cross valve switching part 210 that drives cross valve 40 switchings under the control of control part 200 in the refrigerant circulation of above-mentioned operation mode.
In addition, the driving of above-mentioned compressor 20 is finished by driven compressor portion 230 under the control of control part 200.
And, comprise the outdoor inlet temperature detecting element 240 that detects for the off-premises station inlet temperature among the present invention.In addition, comprise the outdoor conduit temperature detecting element 250 that the off-premises station conduit temperature detects.
Except these, air regulator of the present invention comprises the Time Calculation portion 260 of computing time and stores the memory of data 270 that other heat running and store defrosting running control.
Be more in detail, the user selects to heat operation mode, and then control part 200 drives cross valve switching parts 210 and controls cross valve 40 and switch to and heat operation cycle.
And above-mentioned control part 200 is that control driven compressor portion 230 comes drive compression machine 20.
The HTHP refrigerant that produces at compressor 20 in the operation cycle that heats that constitutes like this circulates to heat exchanger 10 sides of indoor set 50.
At this moment, the heat exchanger 10 of indoor set 50 makes between indoor air and the refrigerant and to produce heat exchange and to indoor discharge warm braw.
And the refrigerant of above-mentioned indoor set 50 heat exchangers 10 of process circulates to compressor 20 sides again by the heat exchanger 30 of off-premises station 60.
At this moment, the heat exchanger 30 of off-premises station 60 is to outdoor discharge cold wind.
As above-mentioned, to carry out when heating running, outdoor fan drive division 220 is accepted the control drive chamber external fan 35 of control part 200.In addition, indoor fan 15 also is driven.
Above-mentioned control part 200 is carried out and is heated running afterwards through inlet temperature and the conduit temperature of certain hour by outdoor inlet temperature detecting element 240 and outdoor conduit temperature detecting element 250 measuring cell outer heat-exchangers.
Below, in the present invention as constituted above, the process with the defrosting running that heats the running relevant action of air regulator is elaborated.
Fig. 4 is the flow chart that heat running of control according to air regulator of the present invention.
With reference to Fig. 4, heat circulation and reach after the driven state, heat running and carry out the above S100 of certain hour, off-premises station 60 heat exchangers 30 are by frost.
At this moment it is low to carry out heat exchanger 30 temperature heat the off-premises station 60 in the operating condition, thus when air sucks, the moisture that contains in the air be set in outdoor heat converter and frost.
The heat exchanger 30 of above-mentioned off-premises station 60 is by frost, blocks then that the inhaled air ventilating opening can not successfully carry out heat exchange and the reduction that causes heating capacity, reduces the conduit temperature of outdoor heat converter again.
Thereupon the heat exchanger 30 of off-premises station 60 white state more than certain hour, should carry out defrosting running.
Thereupon, in order to judge that the initial point control part 200 of carrying out the defrosting running reads the outdoor inlet temperature and the outdoor conduit temperature of off-premises station 60 in the certain hour by temperature sensor etc.
And control part 200 is stored in the above-mentioned outdoor inlet temperature in the certain hour and the difference mean value (T-base) of outdoor conduit temperature in the memory 270, and be utilized as the heat exchanger 30 of judging off-premises station 60 a reference value S110 of white state.
In addition, control part 200 for judge off-premises station 60 heat exchangers 30 frost whether carry out the following stage.
Then, above-mentioned control part 200 redeterminates the outdoor inlet temperature and the outdoor conduit temperature difference mean value of the off-premises station in the certain hour and store mean value (T_meas) S120 again in memory 270.
And obtaining the difference of second mean value T_meas value and first mean value T_base value and judgement with above-mentioned control part 200 is S130 whether more than 5 ℃.
The result of calculation of above-mentioned (T_meas value-T_base value) is not more than 5 ℃, and then above-mentioned control part 200 re-executes the above-mentioned S120 stage.
On the contrary, the result of calculation of above-mentioned (T_meas value-T_base value) is more than 5 ℃ the time, control part 200 be judged as outdoor heat converter 30 frost, control cross valve 40 becomes cooling operation circulation S140 to cyclic transformation.
For example, mensuration heats after the difference of having crossed average inlet temperature per 5 minutes after 10 minutes and average conduit temperature after the action of circulation, measure per 1 minute average inlet temperature and average conduit temperature then, its difference is that to be judged as frost more than 5 ℃ the time serious, converts the cooling operation circulation to.
And, defrosting running beginning S150.The above-mentioned S150 stage is carried out the defrosting running, and then the heat exchanger 30 of off-premises station 60 sides is emitted heat with the condenser action, and the frost that the heat exchanger face adheres to is separated in the thermalization of emitting like this.
And the above-mentioned defrosting running time of implementation of control part 200 mensuration reaches the time of having set, and then decision heats the execution initial point of running or reaches design temperature at defrosting running conduit temperature and inlet temperature again, then determines to heat the execution initial point of running again.
Like this, the defrosting running stops S160, and then control part 200 is controlled cross valve 40 again to heating cyclic transformation.And heat running S170.
As mentioned above, the present invention according to off-premises station white state carry out defrosting running effectively, can improve the performance that heats running of air regulator.
Claims (3)
1. the control method of an air regulator is characterized in that: comprise that heating circulation reaches after the driven state, the 1st stage that the difference value of outdoor intake air temperature and outdoor conduit temperature stores in the average certain hour; The 2nd stage that the difference value of interior outdoor intake air temperature of certain hour and outdoor conduit temperature stores after average above-mentioned the 1st stage; Relatively the difference of the value that stores of value that stores in above-mentioned the 2nd stage and above-mentioned the 1st stage is as in more than specified scope, be judged as off-premises station the 3rd stage of frost.
2. the control method of air regulator according to claim 1 is characterized in that: in above-mentioned the 3rd stage, the difference that is stored in the value in the 2nd stage and is stored in the value in the 1st stage be judged as more than 5 ℃ the time off-premises station frost.
3. the control method of air regulator according to claim 1 is characterized in that: above-mentioned the 3rd stage also comprises judges that off-premises station the 4th stage of carrying out the defrosting running after the frost.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100144278A CN100541062C (en) | 2005-07-07 | 2005-07-07 | The control method of air regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100144278A CN100541062C (en) | 2005-07-07 | 2005-07-07 | The control method of air regulator |
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| Publication Number | Publication Date |
|---|---|
| CN1892135A CN1892135A (en) | 2007-01-10 |
| CN100541062C true CN100541062C (en) | 2009-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100144278A Expired - Fee Related CN100541062C (en) | 2005-07-07 | 2005-07-07 | The control method of air regulator |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460868B (en) * | 2020-11-20 | 2022-07-19 | 浙江工业大学 | Air source heat pump multi-mode accurate defrosting start-stop management method and system |
| CN112460867B (en) * | 2020-11-20 | 2022-08-05 | 浙江正理生能科技有限公司 | Air source heat pump defrosting start-stop management system and method |
| CN112460906B (en) * | 2020-11-20 | 2022-03-25 | 浙江工业大学 | Efficient defrosting start-stop management method for refrigerating unit |
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Granted publication date: 20090916 Termination date: 20100707 |