CN104964497A - Air conditioner and utilization method for residual heat of air conditioner - Google Patents
Air conditioner and utilization method for residual heat of air conditioner Download PDFInfo
- Publication number
- CN104964497A CN104964497A CN201510446885.2A CN201510446885A CN104964497A CN 104964497 A CN104964497 A CN 104964497A CN 201510446885 A CN201510446885 A CN 201510446885A CN 104964497 A CN104964497 A CN 104964497A
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- CN
- China
- Prior art keywords
- air
- conditioning
- expansion valve
- air conditioner
- electric expansion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a utilization method for residual heat of an air conditioner. The utilization method comprises following steps: step 1), halting the air conditioner in the heating state and closing a compressor of the air conditioner and an electronic expansion valve; step 2), decreasing temperature of an evaporator to be less than 5 DEG C than indoor temperature and then turning off an air-conditioning blower. In the technical scheme, after the air conditioner is shut down, the compressor and the electronic expansion valve are both turned off in order to block a heat exchange channel between the evaporator and the outside and to decrease heat loss of the evaporator. In the above method, starting and stopping of the air-conditioning blower are determined based on temperature difference between the detected temperature of the evaporator and indoor temperature. Compared with a manner in the prior art that rotation time of the air-conditioning blower is fixed, residual heat of the evaporator can be utilized by the air-conditioning blower to the maximum limit such that utilization rate of residual heat of the air conditioner is increased. The utilization method for residual heat of the air conditioner is not only capable of decreasing heat loss of the evaporator but also increasing utilization efficiency of residual heat of the evaporator.
Description
Technical field
The present invention relates to aircondition technical field, particularly the Application way of a kind of air-conditioning and air conditioner afterheat.
Background technology
Be provided with the heat pump type air conditioner of electric expansion valve in prior art, after normal shutdown, first compressor quits work, and air-conditioner wind chance is reruned a period of time, is sent into by the waste heat of evaporimeter indoor, the heat of evaporimeter is fully utilized.
The air conditioner electric expansion valve after compressor shutdown being provided with electric expansion valve in prior art is still in opening, in evaporimeter, the refrigerant heat of HTHP can flow to the outdoor condenser of low-temp low-pressure by electric expansion valve, causes the heat loss of evaporimeter; In addition, the rotation time of air-conditioning draught fan is defined by producer oneself, be generally 30s or 1min, easy evaporimeter causes waste heat not utilize blower fan to stop operating completely, cause UTILIZATION OF VESIDUAL HEAT IN insufficient, or the waste heat of evaporimeter utilizes completely, air-conditioning draught fan is also working on, and causes the waste of the energy.
Therefore, how to reduce the utilization rate that heat abstraction more than evaporimeter improves A/C evaporator waste heat simultaneously, become the technical problem that those skilled in the art are urgently to be resolved hurrily.
Summary of the invention
In view of this, the invention provides a kind of Application way of air conditioner afterheat, to reduce the utilization rate that heat abstraction more than evaporimeter improves A/C evaporator waste heat simultaneously.Present invention also offers a kind of air-conditioning.
For achieving the above object, the invention provides following technical scheme:
An Application way for air conditioner afterheat, described air-conditioning is the air-conditioning being provided with electric expansion valve, comprises step:
1), when air-conditioning is in the state of heating and shuts down, the compressor of described air-conditioning and described electric expansion valve are closed, and the air-conditioning draught fan of described air-conditioning keeps rotating;
2), the evaporator temperature of described air-conditioning is when being down to high less than 5 DEG C of comparatively indoor temperature, closes described air-conditioning draught fan.
Preferably, in the Application way of above-mentioned air conditioner afterheat, also comprise step:
3), after described air-conditioning draught fan is closed, described electric expansion valve is opened.
Preferably, in the Application way of above-mentioned air conditioner afterheat, described step 3) be specially: after described air-conditioning draught fan is closed, open described electric expansion valve extremely at utmost.
Preferably, in the Application way of above-mentioned air conditioner afterheat, described step 3) be specially: close within 20s at described air-conditioning draught fan, open described electric expansion valve.
A kind of air-conditioning, comprises compressor, electric expansion valve, evaporimeter and air-conditioning draught fan, also comprises:
For detecting the first temperature sensor of evaporator temperature;
For detecting the second temperature sensor of indoor temperature;
Controller; described controller can control described air-conditioning and cut out described compressor and described electric expansion valve after the state that heats is shut down; when the temperature of described controller is down to high less than 5 DEG C of comparatively indoor temperature; described controller cuts out described air-conditioning draught fan, and controls described electric expansion valve and close in 20s at described air-conditioning draught fan and be opened at utmost.
As can be seen from technique scheme, the Application way of air conditioner afterheat provided by the invention, comprising: step 1), the air-conditioning being in the state of heating is shut down, and the compressor of air-conditioning and electric expansion valve are closed; Step 2), when evaporator temperature is down to high less than 5 DEG C of comparatively indoor temperature, close air-conditioning draught fan.After the air-conditioning being in the state of heating of the prior art is shut down, electric expansion valve is still in opening, the heat of evaporimeter can be run off by the electric expansion valve opened, in this programme after air-conditioning is shut down, compressor and electric expansion valve are all closed, evaporimeter and extraneous exchange heat passage are blocked, decrease scattering and disappearing of evaporimeter heat, and the start and stop of air-conditioning draught fan are according to detecting that the temperature difference of evaporator temperature and indoor temperature determines in the method, relative to the mode passing through fixing air-conditioning draught fan rotation time in prior art, waste heat in evaporimeter can be utilized by air-conditioning draught fan to greatest extent, thus improve the utilization rate of air conditioner afterheat.The Application way of the air conditioner afterheat that this programme provides not only reduces the heat loss of evaporimeter, improves the utilization ratio of waste heat in evaporimeter simultaneously.
Present invention also offers a kind of air-conditioning, this air-conditioning adopts the Application way of above-mentioned air conditioner afterheat, because the method has above-mentioned technique effect, utilizes the air-conditioning of said method also to have same technique effect, does not repeat them here.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The flow chart of the Application way of the air conditioner afterheat that Fig. 1 provides for the embodiment of the present invention.
Detailed description of the invention
The invention discloses a kind of Application way of air conditioner afterheat, to realize making full use of of evaporimeter waste heat, to improve the utilization rate of A/C evaporator waste heat.The invention also discloses a kind of air-conditioning.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, the flow chart of the Application way of the air conditioner afterheat that Fig. 1 provides for the embodiment of the present invention.
The invention discloses a kind of Application way of air conditioner afterheat, air-conditioning is the air-conditioning being provided with electric expansion valve, comprises step:
1), when air-conditioning is in the state of heating and shuts down, the controller of air-conditioning controls compressor and electric expansion valve is closed, air-conditioning draught fan continues to keep rotating, the waste heat of evaporimeter is blown into indoor, the heat that evaporimeter is produced is fully utilized, after air-conditioning is shut down, compressor and the electric expansion valve of air-conditioning are all closed, the closedown of compressor and electric expansion valve can close synchronously, also can successively close, be not specifically limited at this, the time interval that compressor and electric expansion valve are successively closed is unsuitable long, in prior art, after air-conditioning is shut down, electric expansion valve is still in opening, cause the waste heat of evaporimeter to be run off by the electric expansion valve opened, cause the waste of waste heat, in the method, compressor and electric expansion valve are all closed, the passage that the waste heat having blocked evaporimeter outwardly circulates, decrease remaining heat abstraction, thus effectively reduce the waste of waste heat,
2), when evaporator temperature is down to high less than 5 DEG C of comparatively indoor temperature, controller cuts out air-conditioning draught fan, the value difference of the evaporimeter and indoor temperature that control air-conditioning draught fan closedown is by the actual conditions sets itself of producer according to air-conditioning, preferably, difference between evaporator temperature and indoor temperature is unsuitable excessive or too small, temperature contrast between evaporimeter and indoor temperature is excessive, waste heat is caused not to be fully utilized, reduce the utilization rate of waste heat, evaporimeter and indoor temperature difference too small, air-conditioning draught fan is caused to continue to rotate, the wastes power energy.
In this programme, air-conditioning residual-heat utilization method effectively can reduce scattering and disappearing of heat by closing electric expansion valve; The rotation time of air-conditioning draught fan is controlled by controller by the difference that detects between evaporimeter and indoor temperature, relative in prior art by mode that time controling air-conditioning draught fan rotates, can ensure that the waste heat of evaporimeter is farthest used by air-conditioning draught fan, thus improve the utilization rate of evaporimeter waste heat.
In order to optimize technique scheme further, in a specific embodiment of the present invention, also comprise step 3), after air-conditioning draught fan is closed, unlocking electronic expansion valve, to balance the pressure in air-conditioning, after avoiding air-conditioning draught fan to stop 30s, cross valve power-off commutates, the too large generation abnormal sound of air-conditioning system pressure differential.
In order to reach the object of system pressure in Fast-Balance air-conditioning, step 3) in electric expansion valve be opened at utmost, thus can effectively avoid due to system pressure difference produce noise, improve user use comfort.
Air-conditioning draught fan shuts down cross valve power-off commutation after 30s, preferably, step 3) in close in 20s at air-conditioning draught fan, electric expansion valve is opened at utmost.
The invention also discloses a kind of air-conditioning, comprise compressor, electric expansion valve, evaporimeter and air-conditioning draught fan, also comprise:
For detecting the first temperature sensor of evaporator temperature;
For detecting the second temperature sensor of indoor temperature;
Controller; controller can control air-conditioning close compressor and electric expansion valve after the state that heats is shut down; when the temperature of controller is down to high less than 5 DEG C of comparatively indoor temperature, controller cuts out air-conditioning draught fan, and control electric expansion valve is opened at utmost in air-conditioning draught fan closedown 20s.
Controller controls the start and stop of device in air-conditioning, after shutting down under air-conditioning is in the state of heating, controller controls compressor and electric expansion valve and cuts out, and air-conditioning draught fan keeps rotating electric expansion valve and closes the passage that can block evaporimeter and exchange with external heat, heat abstraction more than minimizing evaporimeter; Simultaneously the first temperature sensor and the second temperature sensor detect the temperature of evaporimeter and indoor temperature respectively, and testing result is transferred to controller, controller judges the temperature detected, when evaporator temperature comparatively high less than 5 DEG C of indoor temperature time, close air-conditioning draught fan, air-conditioning draught fan stops operating; After air-conditioning draught fan stops operating in 20s, controller controls electric expansion valve and is opened at utmost, and to balance the pressure of air-conditioning system, after avoiding air-conditioning draught fan to stop 30s, cross valve power-off commutates, the too large generation abnormal sound of air-conditioning system pressure differential.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. an Application way for air conditioner afterheat, described air-conditioning is the air-conditioning being provided with electric expansion valve, it is characterized in that, comprises step:
1), when air-conditioning is in the state of heating and shuts down, the compressor of described air-conditioning and described electric expansion valve are closed, and the air-conditioning draught fan of described air-conditioning keeps rotating;
2), the evaporator temperature of described air-conditioning is when being down to high less than 5 DEG C of comparatively indoor temperature, closes described air-conditioning draught fan.
2. the Application way of air conditioner afterheat according to claim 1, is characterized in that, also comprises step:
3), after described air-conditioning draught fan is closed, described electric expansion valve is opened.
3. the Application way of air conditioner afterheat according to claim 2, is characterized in that, described step 3) be specially: after described air-conditioning draught fan is closed, open described electric expansion valve extremely at utmost.
4. the Application way of air conditioner afterheat according to claim 2, is characterized in that, described step 3) be specially: close within 20s at described air-conditioning draught fan, open described electric expansion valve.
5. an air-conditioning, comprises compressor, electric expansion valve, evaporimeter and air-conditioning draught fan, it is characterized in that, also comprise:
For detecting the first temperature sensor of evaporator temperature;
For detecting the second temperature sensor of indoor temperature;
Controller; described controller can control described air-conditioning and cut out described compressor and described electric expansion valve after the state that heats is shut down; when the temperature of described controller is down to high less than 5 DEG C of comparatively indoor temperature; described controller cuts out described air-conditioning draught fan, and controls described electric expansion valve and close in 20s at described air-conditioning draught fan and be opened at utmost.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510446885.2A CN104964497A (en) | 2015-07-27 | 2015-07-27 | Air conditioner and utilization method for residual heat of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510446885.2A CN104964497A (en) | 2015-07-27 | 2015-07-27 | Air conditioner and utilization method for residual heat of air conditioner |
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| CN104964497A true CN104964497A (en) | 2015-10-07 |
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| CN201510446885.2A Pending CN104964497A (en) | 2015-07-27 | 2015-07-27 | Air conditioner and utilization method for residual heat of air conditioner |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731212A (en) * | 2018-06-20 | 2018-11-02 | 广东美的制冷设备有限公司 | Air-conditioning and its control method and device for blowing waste heat |
| CN108981215A (en) * | 2018-07-02 | 2018-12-11 | 合肥天鹅制冷科技有限公司 | A kind of air conditioner refrigerating surplus energy utility method |
| CN110145837A (en) * | 2019-04-19 | 2019-08-20 | 青岛海尔空调器有限总公司 | Air conditioner and its control method |
| CN110332665A (en) * | 2019-06-14 | 2019-10-15 | 合肥天鹅制冷科技有限公司 | A kind of air conditioner refrigerating surplus energy utility method |
| CN110553339A (en) * | 2019-09-19 | 2019-12-10 | 宁波奥克斯电气股份有限公司 | Heat accumulation prevention control method and device for multi-split air conditioner and air conditioner |
| CN112361647A (en) * | 2020-11-02 | 2021-02-12 | 珠海格力电器股份有限公司 | Heat pump system and control method thereof |
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| CN104729019A (en) * | 2015-03-18 | 2015-06-24 | 广东美的制冷设备有限公司 | Control method of air-conditioner, control system of air-conditioner and air-conditioner |
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| JP2003130429A (en) * | 2001-10-19 | 2003-05-08 | Fujitsu General Ltd | Controller for air conditioner |
| CN1515851A (en) * | 2003-01-11 | 2004-07-28 | 合肥美菱股份有限公司 | Condenser pressure-retaining energy-saving type refrigeration system for refrigerator |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731212A (en) * | 2018-06-20 | 2018-11-02 | 广东美的制冷设备有限公司 | Air-conditioning and its control method and device for blowing waste heat |
| CN108981215A (en) * | 2018-07-02 | 2018-12-11 | 合肥天鹅制冷科技有限公司 | A kind of air conditioner refrigerating surplus energy utility method |
| CN110145837A (en) * | 2019-04-19 | 2019-08-20 | 青岛海尔空调器有限总公司 | Air conditioner and its control method |
| CN110145837B (en) * | 2019-04-19 | 2020-11-27 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
| CN110332665A (en) * | 2019-06-14 | 2019-10-15 | 合肥天鹅制冷科技有限公司 | A kind of air conditioner refrigerating surplus energy utility method |
| CN110553339A (en) * | 2019-09-19 | 2019-12-10 | 宁波奥克斯电气股份有限公司 | Heat accumulation prevention control method and device for multi-split air conditioner and air conditioner |
| CN112361647A (en) * | 2020-11-02 | 2021-02-12 | 珠海格力电器股份有限公司 | Heat pump system and control method thereof |
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Application publication date: 20151007 |