CN105258304A - Low-temperature refrigeration control method, low-temperature refrigeration control device and air conditioner - Google Patents
Low-temperature refrigeration control method, low-temperature refrigeration control device and air conditioner Download PDFInfo
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- CN105258304A CN105258304A CN201510822269.2A CN201510822269A CN105258304A CN 105258304 A CN105258304 A CN 105258304A CN 201510822269 A CN201510822269 A CN 201510822269A CN 105258304 A CN105258304 A CN 105258304A
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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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
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
Abstract
The invention provides a low-temperature refrigeration control method, a low-temperature refrigeration control device and an air conditioner. The low-temperature refrigeration control method comprises the steps that in a low-temperature refrigeration mode, the outlet temperature of an outdoor condenser of the air conditioner is detected through a temperature sensor; the detected outlet temperature of the outdoor condenser is judged to be smaller than or equal to a preset outlet temperature or not; and according to the judging result, the covering area of a wind baffling device which is arranged outside the outdoor condenser of the air conditioner is adjusted. By adopting the technical scheme disclosed by the invention, the heat exchange between the outdoor condenser and the external environment is weakened; the pressure of an outdoor refrigerant is maintained at a reasonable range, and the problems of frosting, liquid slugging and the like caused by over-low pressure of the outdoor refrigerant are avoided; the operation safety of the air conditioning system at a low-temperature outdoor environment temperature is increased; and the user experience is improved.
Description
Technical field
The present invention relates to air-conditioner technical field, in particular to a kind of cryogenic refrigeration control method, a kind of low-temperature refrigeration control device and a kind of air-conditioner.
Background technology
Along with China's economy and scientific and technical development, the material life of people obtains very big improvement, especially the requirement of environmental degree of comfort and cleanliness factor is promoted gradually, under the condition that ambient temperature is lower, a lot of occasion still needs operation of air conditioner refrigeration mode to keep the temperature and humidity in room at zone of reasonableness, as exclusive restaurant, data center module etc.
Conventional air conditioner is when running refrigerating pattern, ambient temperature often controls at 25 DEG C to 35 DEG C, and when environment temperature is lower than-10 DEG C, if air-conditioner needs running refrigerating pattern, the load of air-conditioner will be relatively little, outdoor condenser good effect of heat exchange.But meanwhile, condensation temperature and condensing pressure smaller, this with regard to cause adiabatic throttling process laggard enter the cold-producing medium of indoor evaporator be in lower evaporating pressure and evaporating temperature, the too low meeting of evaporating temperature causes indoor set frosting, have a strong impact on the refrigeration of air-conditioning system, in addition, the too low compressor return air temperature that also makes of evaporating temperature is lower, easy formation liquid hammer, makes the operation of air-conditioning system be in an unsure state.
Therefore, how to avoid the problem such as frosting, liquid hammer caused because of outdoor refrigerant hypotony during cryogenic refrigeration, become current problem demanding prompt solution.
Summary of the invention
The present invention, just based on the problems referred to above, proposes a kind of new technical scheme, avoids the problem such as frosting, liquid hammer caused because of outdoor refrigerant hypotony during cryogenic refrigeration.
For this reason, one object of the present invention is to propose a kind of cryogenic refrigeration control method.
Another object of the present invention is to propose a kind of low-temperature refrigeration control device.
Another object of the present invention is to propose a kind of air-conditioner, has above-mentioned low-temperature refrigeration control device.
For achieving the above object, the embodiment of a first aspect of the present invention proposes a kind of cryogenic refrigeration control method, for air-conditioner, comprising: under cryogenic refrigeration pattern, is detected the outdoor condensator outlet temperature of described air-conditioner by temperature sensor; Judge whether the described outdoor condensator outlet temperature detected is less than or equal to predetermined outlet temperature; According to judged result, the peripheral hardware adjusting the outdoor condenser of described air-conditioner is becalmed the masked area of device.
The cryogenic refrigeration control method of embodiments of the invention, under cryogenic refrigeration pattern, because outdoor temperature is too low, the heat transfer effect of outdoor condenser is better, just cause outdoor condensator outlet temperature lower, bring the problem such as frosting, liquid hammer produced because refrigerant pressure is too low.Therefore, under cryogenic refrigeration pattern, can by the outdoor condensator outlet temperature of temperature sensor Real-Time Monitoring, thus when outdoor condensator outlet temperature is lower than predetermined outlet temperature, increase peripheral hardware to becalm the area of device covered chamber external condenser, the heat exchange area of outdoor condenser and external environment condition is reduced, thus reduce the heat transfer effect of outdoor condenser, maintain refrigerant pressure and be in zone of reasonableness, wherein, described masked area is less, and the heat exchange area of described outdoor condenser and external environment condition is larger.By this technical scheme, weaken the heat exchange of outdoor condenser and external environment, maintain outdoor refrigerant pressure and be in rational scope, avoid the problem such as frosting, liquid hammer caused because of outdoor refrigerant hypotony, add the safety in operation of air-conditioning system under low temperature outdoor environment temperature, improve Consumer's Experience.
According to one embodiment of present invention, before the described outdoor condensator outlet temperature by temperature sensor detection air-conditioner, also comprise: detect current environmental temperature by environment temperature sensor; Determine whether described current environmental temperature is less than or equal to specific environment temperature; When determining that described current environmental temperature is less than or equal to described specific environment temperature, enter described cryogenic refrigeration pattern.
The cryogenic refrigeration control method of embodiments of the invention, can judge current environmental temperature in advance, when current environmental temperature is less than or equal to specific environment temperature, judge that current environmental temperature is too low, cryogenic refrigeration pattern can be opened, to avoid the problem such as frosting, liquid hammer caused because of outdoor refrigerant hypotony, add the safety in operation of air-conditioning system under low temperature outdoor environment temperature.
According to one embodiment of present invention, before the described outdoor condensator outlet temperature by temperature sensor detection air-conditioner, also comprise: according to the first setting command received, described specific environment temperature and described predetermined outlet temperature are set.
The cryogenic refrigeration control method of embodiments of the invention, user according to actual needs, can pre-set specific environment temperature and predetermined outlet temperature, thus improves the flexibility and practicality that control air-conditioner.
According to one embodiment of present invention, described according to judged result, the peripheral hardware adjusting the outdoor condenser of described air-conditioner is becalmed the masked area of device, comprise: when described judged result is for being, control drive motors of becalming drives described peripheral hardware device of becalming to move along described outdoor condenser, make described outdoor condenser by described peripheral hardware becalm device cover shielded area increase, reduce to make the heat exchange area of described outdoor condenser and described external environment condition; When described judged result is no, do not adjust described shielded area.
The cryogenic refrigeration control method of embodiments of the invention, drives peripheral hardware device of becalming to move along described outdoor condenser by drive motors of becalming, thus increases or reduce shielded area, to change the heat exchange area of outdoor condenser and external environment.Such as, peripheral hardware device of becalming can be cloth of becalming, cloth of becalming rotates placement on connecting rod, cover on outside outdoor heat exchanger, connecting rod is provided with micromachine and gear, like this, is rotated by micromachine driven wheel, the cloth that can control to becalm moves up and down at outdoor heat exchanger outer surface, increases or reduces shielded area.By this technical scheme, on the basis not changing air-conditioner original structure, peripheral hardware can be controlled by outdoor condenser air outlet temperature to becalm the lifting of device, thus the heat exchange area of outdoor condenser and external environment can be changed easily, the heat transfer effect of control room external condenser, thus maintenance outdoor refrigerant pressure is in rational scope, avoid the problem such as frosting, liquid hammer caused because of outdoor refrigerant hypotony, add the safety in operation of air-conditioning system under low temperature outdoor environment temperature, improve Consumer's Experience.
According to one embodiment of present invention, described peripheral hardware is driven to becalm before device moves along described outdoor condenser at described control drive motors of becalming, also comprise: according to the second setting command received, the device displacement of becalming that each outlet temperature scope at least one outlet temperature scope and at least one outlet temperature scope described of arranging is corresponding; And described control drive motors of becalming drives described peripheral hardware device of becalming to move along described outdoor condenser, specifically comprises: determine the target outlet temperature range belonging to described outdoor condensator outlet temperature at least one outlet temperature scope described; Drive motors of becalming described in control drive described peripheral hardware becalm device move described target outlet temperature range corresponding described in becalm device displacement.
The cryogenic refrigeration control method of embodiments of the invention, can specifically control peripheral hardware according to outdoor condensator outlet temperature range to becalm the displacement of device, specifically, outlet temperature scope can be pre-set, and device displacement of becalming corresponding to outlet temperature range is set, wherein, outdoor condensator outlet temperature is lower, the device displacement of becalming needed is larger, to the heat transfer effect of outdoor condenser weakening more obvious, thus promote refrigerant pressure as much as possible, avoid the frosting caused because of outdoor refrigerant hypotony, the problems such as liquid hammer, add the safety in operation of air-conditioning system under low temperature outdoor environment temperature, improve Consumer's Experience.
The embodiment of a second aspect of the present invention proposes a kind of low-temperature refrigeration control device, for air-conditioner, comprising: outlet temperature detecting unit, under cryogenic refrigeration pattern, is detected the outdoor condensator outlet temperature of described air-conditioner by temperature sensor; Judging unit, judges whether the described outdoor condensator outlet temperature detected is less than or equal to predetermined outlet temperature; Performance element, according to judged result, the peripheral hardware adjusting the outdoor condenser of described air-conditioner is becalmed the masked area of device, and wherein, described masked area is less, and the heat exchange area of described outdoor condenser and external environment condition is larger.
The low-temperature refrigeration control device of embodiments of the invention, under cryogenic refrigeration pattern, because outdoor temperature is too low, the heat transfer effect of outdoor condenser is better, just cause outdoor condensator outlet temperature lower, bring the problem such as frosting, liquid hammer produced because refrigerant pressure is too low.Therefore, under cryogenic refrigeration pattern, can by the outdoor condensator outlet temperature of temperature sensor Real-Time Monitoring, thus when outdoor condensator outlet temperature is lower than predetermined outlet temperature, increase peripheral hardware to becalm the area of device covered chamber external condenser, the heat exchange area of outdoor condenser and external environment condition is reduced, thus reduce the heat transfer effect of outdoor condenser, maintain refrigerant pressure and be in zone of reasonableness, wherein, described masked area is less, and the heat exchange area of described outdoor condenser and external environment condition is larger.By this technical scheme, weaken the heat exchange of outdoor condenser and external environment, maintain outdoor refrigerant pressure and be in rational scope, avoid the problem such as frosting, liquid hammer caused because of outdoor refrigerant hypotony, add the safety in operation of air-conditioning system under low temperature outdoor environment temperature, improve Consumer's Experience.
According to one embodiment of present invention, also comprise: environment temperature detecting unit, before the described outdoor condensator outlet temperature by temperature sensor detection air-conditioner, detect current environmental temperature by environment temperature sensor; First determining unit, determines whether described current environmental temperature is less than or equal to specific environment temperature, wherein, when determining that described current environmental temperature is less than or equal to described specific environment temperature, enters described cryogenic refrigeration pattern.
The low-temperature refrigeration control device of embodiments of the invention, can judge current environmental temperature in advance, when current environmental temperature is less than or equal to specific environment temperature, judge that current environmental temperature is too low, cryogenic refrigeration pattern can be opened, to avoid the problem such as frosting, liquid hammer caused because of outdoor refrigerant hypotony, add the safety in operation of air-conditioning system under low temperature outdoor environment temperature.
According to one embodiment of present invention, also comprise: the first setting unit, before the described outdoor condensator outlet temperature by temperature sensor detection air-conditioner, according to the first setting command received, described specific environment temperature and described predetermined outlet temperature are set.
The low-temperature refrigeration control device of embodiments of the invention, user according to actual needs, can pre-set specific environment temperature and predetermined outlet temperature, thus improves the flexibility and practicality that control air-conditioner.
According to one embodiment of present invention, described performance element comprises: device driver element of becalming, when described judged result is for being, control drive motors of becalming drives described peripheral hardware device of becalming to move along described outdoor condenser, make described outdoor condenser by described peripheral hardware becalm device cover shielded area increase, reduce to make the heat exchange area of described outdoor condenser and described external environment condition; Second determining unit, when described judged result is no, does not adjust described shielded area.
The low-temperature refrigeration control device of embodiments of the invention, drives peripheral hardware device of becalming to move along described outdoor condenser by drive motors of becalming, thus increases or reduce shielded area, to change the heat exchange area of outdoor condenser and external environment.Such as, peripheral hardware device of becalming can be cloth of becalming, cloth of becalming rotates placement on connecting rod, cover on outside outdoor heat exchanger, connecting rod is provided with micromachine and gear, like this, is rotated by micromachine driven wheel, the cloth that can control to becalm moves up and down at outdoor heat exchanger outer surface, increases or reduces shielded area.By this technical scheme, on the basis not changing air-conditioner original structure, peripheral hardware can be controlled by outdoor condenser air outlet temperature to becalm the lifting of device, thus the heat exchange area of outdoor condenser and external environment can be changed easily, the heat transfer effect of control room external condenser, thus maintenance outdoor refrigerant pressure is in rational scope, avoid the problem such as frosting, liquid hammer caused because of outdoor refrigerant hypotony, add the safety in operation of air-conditioning system under low temperature outdoor environment temperature, improve Consumer's Experience.
According to one embodiment of present invention, also comprise: the second setting unit, described peripheral hardware is driven to becalm before device moves along described outdoor condenser at described control drive motors of becalming, according to the second setting command received, the device displacement of becalming that each outlet temperature scope at least one outlet temperature scope and at least one outlet temperature scope described of arranging is corresponding; And described in becalm device driver element specifically for: at least one outlet temperature scope described, determine the target outlet temperature range belonging to described outdoor condensator outlet temperature, and drive motors of becalming described in controlling drive described peripheral hardware becalm device move described target outlet temperature range corresponding described in becalm device displacement.
The low-temperature refrigeration control device of embodiments of the invention, can specifically control peripheral hardware according to outdoor condensator outlet temperature range to becalm the displacement of device, specifically, outlet temperature scope can be pre-set, and device displacement of becalming corresponding to outlet temperature range is set, wherein, outdoor condensator outlet temperature is lower, the device displacement of becalming needed is larger, to the heat transfer effect of outdoor condenser weakening more obvious, thus promote refrigerant pressure as much as possible, avoid the frosting caused because of outdoor refrigerant hypotony, the problems such as liquid hammer, add the safety in operation of air-conditioning system under low temperature outdoor environment temperature, improve Consumer's Experience.
The embodiment of a third aspect of the present invention proposes a kind of air-conditioner, comprises the low-temperature refrigeration control device described in above-mentioned any embodiment.Therefore, this air-conditioner has the technique effect identical with the low-temperature refrigeration control device that second aspect present invention embodiment provides, and does not repeat them here.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 shows the flow chart of cryogenic refrigeration control method according to an embodiment of the invention;
Fig. 2 A shows the flow chart of cryogenic refrigeration control method according to another embodiment of the invention;
Fig. 2 B and Fig. 2 C shows the structural representation of the low-temperature refrigeration control device used in Fig. 2 A;
Fig. 3 shows the block diagram of low-temperature refrigeration control device according to an embodiment of the invention;
Fig. 4 shows the block diagram of air-conditioner according to an embodiment of the invention.
Detailed description of the invention
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
Fig. 1 shows the flow chart of cryogenic refrigeration control method according to an embodiment of the invention.
As shown in Figure 1, cryogenic refrigeration control method according to an embodiment of the invention, comprising:
Step 102, under cryogenic refrigeration pattern, detects the outdoor condensator outlet temperature of described air-conditioner by temperature sensor.
Step 104, judges whether the described outdoor condensator outlet temperature detected is less than or equal to predetermined outlet temperature.
Step 106, according to judged result, the peripheral hardware adjusting the outdoor condenser of described air-conditioner is becalmed the masked area of device.
The cryogenic refrigeration control method of embodiments of the invention, under cryogenic refrigeration pattern, because outdoor temperature is too low, the heat transfer effect of outdoor condenser is better, just cause outdoor condensator outlet temperature lower, bring the problem such as frosting, liquid hammer produced because refrigerant pressure is too low.Therefore, under cryogenic refrigeration pattern, can by the outdoor condensator outlet temperature of temperature sensor Real-Time Monitoring, thus when outdoor condensator outlet temperature is lower than predetermined outlet temperature, increase peripheral hardware to becalm the area of device covered chamber external condenser, the heat exchange area of outdoor condenser and external environment condition is reduced, thus reduce the heat transfer effect of outdoor condenser, maintain refrigerant pressure and be in zone of reasonableness, wherein, described masked area is less, and the heat exchange area of described outdoor condenser and external environment condition is larger.By this technical scheme, weaken the heat exchange of outdoor condenser and external environment, maintain outdoor refrigerant pressure and be in rational scope, avoid the problem such as frosting, liquid hammer caused because of outdoor refrigerant hypotony, add the safety in operation of air-conditioning system under low temperature outdoor environment temperature, improve Consumer's Experience.
According to one embodiment of present invention, before step 102, also comprise: detect current environmental temperature by environment temperature sensor; Determine whether described current environmental temperature is less than or equal to specific environment temperature; When determining that described current environmental temperature is less than or equal to described specific environment temperature, enter described cryogenic refrigeration pattern.
The cryogenic refrigeration control method of embodiments of the invention, can judge current environmental temperature in advance, when current environmental temperature is less than or equal to specific environment temperature, judge that current environmental temperature is too low, cryogenic refrigeration pattern can be opened, to avoid the problem such as frosting, liquid hammer caused because of outdoor refrigerant hypotony, add the safety in operation of air-conditioning system under low temperature outdoor environment temperature.
According to one embodiment of present invention, before step 102, also comprise: according to the first setting command received, described specific environment temperature and described predetermined outlet temperature are set.
The cryogenic refrigeration control method of embodiments of the invention, user according to actual needs, can pre-set specific environment temperature and predetermined outlet temperature, thus improves the flexibility and practicality that control air-conditioner.
According to one embodiment of present invention, step 106 comprises: when described judged result is for being, control drive motors of becalming drives described peripheral hardware device of becalming to move along described outdoor condenser, make described outdoor condenser by described peripheral hardware becalm device cover shielded area increase, reduce to make the heat exchange area of described outdoor condenser and described external environment condition; When described judged result is no, do not adjust described shielded area.
The cryogenic refrigeration control method of embodiments of the invention, drives peripheral hardware device of becalming to move along described outdoor condenser by drive motors of becalming, thus increases or reduce shielded area, to change the heat exchange area of outdoor condenser and external environment.Such as, peripheral hardware device of becalming can be cloth of becalming, cloth of becalming rotates placement on connecting rod, cover on outside outdoor heat exchanger, connecting rod is provided with micromachine and gear, like this, is rotated by micromachine driven wheel, the cloth that can control to becalm moves up and down at outdoor heat exchanger outer surface, increases or reduces shielded area.By this technical scheme, on the basis not changing air-conditioner original structure, peripheral hardware can be controlled by outdoor condenser air outlet temperature to becalm the lifting of device, thus the heat exchange area of outdoor condenser and external environment can be changed easily, the heat transfer effect of control room external condenser, thus maintenance outdoor refrigerant pressure is in rational scope, avoid the problem such as frosting, liquid hammer caused because of outdoor refrigerant hypotony, add the safety in operation of air-conditioning system under low temperature outdoor environment temperature, improve Consumer's Experience.
According to one embodiment of present invention, described peripheral hardware is driven to becalm before device moves along described outdoor condenser at described control drive motors of becalming, also comprise: according to the second setting command received, the device displacement of becalming that each outlet temperature scope at least one outlet temperature scope and at least one outlet temperature scope described of arranging is corresponding; And described control drive motors of becalming drives described peripheral hardware device of becalming to move along described outdoor condenser, specifically comprises: determine the target outlet temperature range belonging to described outdoor condensator outlet temperature at least one outlet temperature scope described; Drive motors of becalming described in control drive described peripheral hardware becalm device move described target outlet temperature range corresponding described in becalm device displacement.
The cryogenic refrigeration control method of embodiments of the invention, can specifically control peripheral hardware according to outdoor condensator outlet temperature range to becalm the displacement of device, specifically, outlet temperature scope can be pre-set, and device displacement of becalming corresponding to outlet temperature range is set, wherein, outdoor condensator outlet temperature is lower, the device displacement of becalming needed is larger, to the heat transfer effect of outdoor condenser weakening more obvious, thus promote refrigerant pressure as much as possible, avoid the frosting caused because of outdoor refrigerant hypotony, the problems such as liquid hammer, add the safety in operation of air-conditioning system under low temperature outdoor environment temperature, improve Consumer's Experience.
Fig. 2 A shows the flow chart of cryogenic refrigeration control method according to another embodiment of the invention.
As shown in Figure 2 A, cryogenic refrigeration control method according to another embodiment of the invention, comprising:
Step 202, detects condensator outlet temperature T3.
Step 204, judges that whether condensator outlet temperature T3 is lower than setting value, when judged result is for being, enters step 206, otherwise, return step 202, continue monitoring T3.
Step 206, the micromachine in cylinder of controlling to becalm rotates, and the cloth that makes to becalm stops the heat exchange of outdoor condenser and external environment.
Fig. 2 B and Fig. 2 C shows the structural representation of the low-temperature refrigeration control device used in Fig. 2 A.
As shown in fig. 2 b and fig. 2 c, the low-temperature refrigeration control device used in Fig. 2 A comprises: sleeve 1, cloth 2 of becalming, outdoor condenser 3, gear 4, micromachine 5, connecting rod 6, wherein, connecting rod 6 is arranged on the center of sleeve 1, micromachine 5 and gear 4 are arranged on connecting rod 6, and gear 4 is connected with cloth 2 two ends of becalming and drives cloth 2 of becalming to move up and down.
In cryogenic refrigeration pattern, control module sensing chamber external condenser outlet temperature T3, and judge that whether T3 is lower than setting value, when T3 is lower than setting value, can by signal transmission to electric controller, electric controller controls micromachine 5 and rotates clockwise the cloth 2 that makes to becalm and fall, to stop the heat exchange of outdoor condenser 3 and external environment.
Particularly, outdoor condenser 3 is entered from compressor exhaust out, when T3 being detected lower than setting value, micromachine 5 turns clockwise, driven gear 4 rotates, under gear 4 acts on, cloth 2 of becalming moves down along the gap on sleeve 1, cover both sides before and after outdoor condenser 3, reduce the heat exchange of cold-producing medium in outdoor condenser 3 and extraneous low temperature environment, weaken heat transfer effect, thus maintain condensing pressure in rational scope, the too low indoor set frosting brought of pressure and temperature after avoiding cold-producing medium throttling, the problems such as compressor liquid hammer, ensure that air-conditioning system is stable at low ambient temperatures and export cold, maintenance room temperature and humidity are at OK range, ensure the comfortableness of space air.In addition, when T3 being detected higher than setting value, control micromachine 5 and be rotated counterclockwise, thus driven gear 4 makes to becalm, cloth 2 rises, and regains in sleeve 1.This apparatus structure is simple, and cost is low, can optimize the refrigeration performance of air-conditioning system under low temperature chamber external environment well.
In above-mentioned arbitrary technical scheme, preferably, connecting rod 6 is arranged in sleeve 1, and cloth 2 of becalming rotates placement on connecting rod 6, and micromachine 5 and gear 4 are arranged on connecting rod 6.
In above-mentioned arbitrary technical scheme, preferably, cloth 2 of becalming is placed in sleeve 1, and sleeve 1 has gap, and the cloth 2 that makes to becalm can fall or regain sleeve 1 in sleeve 1.
In above-mentioned arbitrary technical scheme, preferably, the unlatching of micromachine 5 is controlled by sensing chamber external condenser outlet temperature T3.
In above-mentioned arbitrary technical scheme, preferably, gear 4 is connected with the two ends of cloth 2 of becalming, thus drives cloth of becalming to move up and down.
In above-mentioned arbitrary technical scheme, preferably, before and after outdoor condenser 3, both sides all arrange sleeve 1 and effectively stop outdoor condenser 3 inner refrigerant and external environment heat exchange, the space between front side sleeve 1 condenser 3 disposed in the outdoor and blower fan.
Fig. 3 shows the block diagram of low-temperature refrigeration control device according to an embodiment of the invention.
As shown in Figure 3, low-temperature refrigeration control device 300 according to an embodiment of the invention, comprise outlet temperature detecting unit 302, judging unit 304 and performance element 306, wherein, outlet temperature detecting unit 302 for detecting the outdoor condensator outlet temperature of air-conditioner under cryogenic refrigeration pattern by temperature sensor; Judging unit 304 is for judging whether the outdoor condensator outlet temperature detected is less than or equal to predetermined outlet temperature; Performance element 306 is for according to judged result, and the peripheral hardware adjusting the outdoor condenser of described air-conditioner is becalmed the masked area of device.
The low-temperature refrigeration control device 300 of embodiments of the invention, under cryogenic refrigeration pattern, because outdoor temperature is too low, the heat transfer effect of outdoor condenser is better, just cause outdoor condensator outlet temperature lower, bring the problem such as frosting, liquid hammer produced because refrigerant pressure is too low.Therefore, under cryogenic refrigeration pattern, can by the outdoor condensator outlet temperature of temperature sensor Real-Time Monitoring, thus when outdoor condensator outlet temperature is lower than predetermined outlet temperature, increase peripheral hardware to becalm the area of device covered chamber external condenser, the heat exchange area of outdoor condenser and external environment condition is reduced, thus reduce the heat transfer effect of outdoor condenser, maintain refrigerant pressure and be in zone of reasonableness, wherein, described masked area is less, and the heat exchange area of described outdoor condenser and external environment condition is larger.By this technical scheme, weaken the heat exchange of outdoor condenser and external environment, maintain outdoor refrigerant pressure and be in rational scope, avoid the problem such as frosting, liquid hammer caused because of outdoor refrigerant hypotony, add the safety in operation of air-conditioning system under low temperature outdoor environment temperature, improve Consumer's Experience.
According to one embodiment of present invention, also comprise: environment temperature detecting unit 308, before the outdoor condensator outlet temperature being detected air-conditioner by temperature sensor, detect current environmental temperature by environment temperature sensor; First determining unit 310, determines whether current environmental temperature is less than or equal to specific environment temperature, wherein, when determining that current environmental temperature is less than or equal to specific environment temperature, enters cryogenic refrigeration pattern.
The low-temperature refrigeration control device 300 of embodiments of the invention, can judge current environmental temperature in advance, when current environmental temperature is less than or equal to specific environment temperature, judge that current environmental temperature is too low, cryogenic refrigeration pattern can be opened, to avoid the problem such as frosting, liquid hammer caused because of outdoor refrigerant hypotony, add the safety in operation of air-conditioning system under low temperature outdoor environment temperature.
According to one embodiment of present invention, also comprise: the first setting unit 312, before the outdoor condensator outlet temperature being detected air-conditioner by temperature sensor, according to the first setting command received, specific environment temperature and predetermined outlet temperature are set.
The low-temperature refrigeration control device 300 of embodiments of the invention, user according to actual needs, can pre-set specific environment temperature and predetermined outlet temperature, thus improves the flexibility and practicality that control air-conditioner.
According to one embodiment of present invention, performance element 306 comprises: device driver element 3062 of becalming, when judged result is for being, control drive motors of becalming drives peripheral hardware device of becalming to move along outdoor condenser, make outdoor condenser by peripheral hardware becalm device cover shielded area increase, reduce to make the heat exchange area of outdoor condenser and external environment condition; Second determining unit 3064, when judged result is no, does not adjust shielded area.
The low-temperature refrigeration control device 300 of embodiments of the invention, drives peripheral hardware device of becalming to move along outdoor condenser by drive motors of becalming, thus increases or reduce shielded area, to change the heat exchange area of outdoor condenser and external environment.Such as, peripheral hardware device of becalming can be cloth of becalming, cloth of becalming rotates placement on connecting rod, cover on outside outdoor heat exchanger, connecting rod is provided with micromachine and gear, like this, is rotated by micromachine driven wheel, the cloth that can control to becalm moves up and down at outdoor heat exchanger outer surface, increases or reduces shielded area.By this technical scheme, on the basis not changing air-conditioner original structure, peripheral hardware can be controlled by outdoor condenser air outlet temperature to becalm the lifting of device, thus the heat exchange area of outdoor condenser and external environment can be changed easily, the heat transfer effect of control room external condenser, thus maintenance outdoor refrigerant pressure is in rational scope, avoid the problem such as frosting, liquid hammer caused because of outdoor refrigerant hypotony, add the safety in operation of air-conditioning system under low temperature outdoor environment temperature, improve Consumer's Experience.
According to one embodiment of present invention, also comprise: the second setting unit 314, peripheral hardware is driven to becalm before device moves along outdoor condenser at control drive motors of becalming, according to the second setting command received, the device displacement of becalming that at least one outlet temperature scope is corresponding with each outlet temperature scope at least one outlet temperature scope is set; And becalm device driver element 3062 specifically for: at least one outlet temperature scope, determine the target outlet temperature range belonging to outdoor condensator outlet temperature, and the drive motors that controls to becalm drives peripheral hardware to becalm device displacement of becalming corresponding to device moving target outlet temperature scope.
The low-temperature refrigeration control device 300 of embodiments of the invention, can specifically control peripheral hardware according to outdoor condensator outlet temperature range to becalm the displacement of device, specifically, outlet temperature scope can be pre-set, and device displacement of becalming corresponding to outlet temperature range is set, wherein, outdoor condensator outlet temperature is lower, the device displacement of becalming needed is larger, to the heat transfer effect of outdoor condenser weakening more obvious, thus promote refrigerant pressure as much as possible, avoid the frosting caused because of outdoor refrigerant hypotony, the problems such as liquid hammer, add the safety in operation of air-conditioning system under low temperature outdoor environment temperature, improve Consumer's Experience.
Fig. 4 shows the block diagram of air-conditioner according to an embodiment of the invention.
As shown in Figure 4, air-conditioner 400 according to an embodiment of the invention, comprises the low-temperature refrigeration control device 300 shown in Fig. 3.Therefore, air-conditioner 400 has the identical technique effect of the low-temperature refrigeration control device 300 that provides with above-described embodiment, does not repeat them here.
More than be described with reference to the accompanying drawings technical scheme of the present invention, by technical scheme of the present invention, weaken the heat exchange of outdoor condenser and external environment, maintain outdoor refrigerant pressure and be in rational scope, avoid the problem such as frosting, liquid hammer caused because of outdoor refrigerant hypotony, add the safety in operation of air-conditioning system under low temperature outdoor environment temperature, improve Consumer's Experience.
In the present invention, term " first ", " second ", " the 3rd " and the object only for describing, and can not be interpreted as instruction or hint relative importance; Term " multiple " represents two or more; Term " is connected ", " connection " etc. all should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this description, specific features, structure, material or feature that the description of term " embodiment ", " another embodiment " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a cryogenic refrigeration control method, for air-conditioner, is characterized in that, comprising:
Under cryogenic refrigeration pattern, detected the outdoor condensator outlet temperature of described air-conditioner by temperature sensor;
Judge whether the described outdoor condensator outlet temperature detected is less than or equal to predetermined outlet temperature;
According to judged result, the peripheral hardware adjusting the outdoor condenser of described air-conditioner is becalmed the masked area of device.
2. cryogenic refrigeration control method according to claim 1, is characterized in that, before the described outdoor condensator outlet temperature by temperature sensor detection air-conditioner, also comprises:
Current environmental temperature is detected by environment temperature sensor;
Determine whether described current environmental temperature is less than or equal to specific environment temperature;
When determining that described current environmental temperature is less than or equal to described specific environment temperature, enter described cryogenic refrigeration pattern.
3. cryogenic refrigeration control method according to claim 2, is characterized in that, before the described outdoor condensator outlet temperature by temperature sensor detection air-conditioner, also comprises:
According to the first setting command received, described specific environment temperature and described predetermined outlet temperature are set.
4. cryogenic refrigeration control method according to any one of claim 1 to 3, is characterized in that, described according to judged result, and the peripheral hardware adjusting the outdoor condenser of described air-conditioner is becalmed the masked area of device, comprising:
When described judged result is for being, control drive motors of becalming drives described peripheral hardware device of becalming to move along described outdoor condenser, make described outdoor condenser by described peripheral hardware becalm device cover shielded area increase, reduce to make the heat exchange area of described outdoor condenser and described external environment condition;
When described judged result is no, do not adjust described shielded area.
5. cryogenic refrigeration control method according to claim 4, is characterized in that, drives described peripheral hardware to becalm before device moves along described outdoor condenser, also comprise at described control drive motors of becalming:
According to the second setting command received, the device displacement of becalming that each outlet temperature scope at least one outlet temperature scope and at least one outlet temperature scope described of arranging is corresponding; And
Described control drive motors of becalming drives described peripheral hardware device of becalming to move along described outdoor condenser, specifically comprises:
The target outlet temperature range belonging to described outdoor condensator outlet temperature is determined at least one outlet temperature scope described;
Drive motors of becalming described in control drive described peripheral hardware becalm device move described target outlet temperature range corresponding described in becalm device displacement.
6. a low-temperature refrigeration control device, for air-conditioner, is characterized in that, comprising:
Outlet temperature detecting unit, under cryogenic refrigeration pattern, detects the outdoor condensator outlet temperature of described air-conditioner by temperature sensor;
Judging unit, judges whether the described outdoor condensator outlet temperature detected is less than or equal to predetermined outlet temperature;
Performance element, according to judged result, the peripheral hardware adjusting the outdoor condenser of described air-conditioner is becalmed the masked area of device.
7. low-temperature refrigeration control device according to claim 6, is characterized in that, also comprises:
Environment temperature detecting unit, before the described outdoor condensator outlet temperature by temperature sensor detection air-conditioner, detects current environmental temperature by environment temperature sensor;
First determining unit, determines whether described current environmental temperature is less than or equal to specific environment temperature, wherein, when determining that described current environmental temperature is less than or equal to described specific environment temperature, enters described cryogenic refrigeration pattern.
8. low-temperature refrigeration control device according to claim 7, is characterized in that, also comprises:
First setting unit, before the described outdoor condensator outlet temperature by temperature sensor detection air-conditioner, according to the first setting command received, arranges described specific environment temperature and described predetermined outlet temperature.
9. the low-temperature refrigeration control device according to any one of claim 6 to 8, is characterized in that, described performance element comprises:
To becalm device driver element, when described judged result is for being, control drive motors of becalming drives described peripheral hardware device of becalming to move along described outdoor condenser, make described outdoor condenser by described peripheral hardware becalm device cover shielded area increase, reduce to make the heat exchange area of described outdoor condenser and described external environment condition;
Second determining unit, when described judged result is no, does not adjust described shielded area.
10. low-temperature refrigeration control device according to claim 9, is characterized in that, also comprises:
Second setting unit, described peripheral hardware is driven to becalm before device moves along described outdoor condenser at described control drive motors of becalming, according to the second setting command received, the device displacement of becalming that each outlet temperature scope at least one outlet temperature scope and at least one outlet temperature scope described of arranging is corresponding; And
Described becalm device driver element specifically for:
In at least one outlet temperature scope described, determine the target outlet temperature range belonging to described outdoor condensator outlet temperature, and drive motors of becalming described in controlling drive described peripheral hardware becalm device move described target outlet temperature range corresponding described in becalm device displacement.
11. 1 kinds of air-conditioners, is characterized in that, comprise the low-temperature refrigeration control device according to any one of claim 6 to 10.
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| CN113757816A (en) * | 2020-06-04 | 2021-12-07 | 青岛海信日立空调系统有限公司 | Air conditioner |
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