CN114110927A - Control method and device for fresh air set, fresh air set and storage medium - Google Patents
Control method and device for fresh air set, fresh air set and storage medium Download PDFInfo
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- CN114110927A CN114110927A CN202111407589.3A CN202111407589A CN114110927A CN 114110927 A CN114110927 A CN 114110927A CN 202111407589 A CN202111407589 A CN 202111407589A CN 114110927 A CN114110927 A CN 114110927A
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000007710 freezing Methods 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 84
- 238000001514 detection method Methods 0.000 claims description 5
- 230000008014 freezing Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000002265 prevention Effects 0.000 description 5
- 208000001034 Frostbite Diseases 0.000 description 4
- 238000011217 control strategy Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- F24F11/41—Defrosting; Preventing freezing
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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
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
The invention discloses a control method and a control device of a fresh air unit, the fresh air unit and a storage medium, wherein the method comprises the following steps: detecting the temperature parameter of the fresh air unit under the condition that the fresh air unit operates in a winter mode; the temperature parameters of the fresh air unit at least comprise: the air supply temperature of the fresh air unit; and controlling the fan wind gear or the fan start-stop of the fresh air fan unit according to the temperature parameter of the fresh air fan unit so as to at least realize the anti-freezing control of the surface cooler of the fresh air fan unit. This scheme carries out the frostproofing control of surface cooler through the brand-new fan group to using water-cooled heat exchanger, can avoid the surface cooler frost crack, has guaranteed the safety in utilization of brand-new fan group, has also promoted user's use and has experienced.
Description
Technical Field
The invention belongs to the technical field of anti-freezing control, and particularly relates to a control method and device of a fresh air unit, the fresh air unit and a storage medium, in particular to a surface cooler anti-freezing control method and device of the fresh air unit in winter, the fresh air unit and the storage medium.
Background
The fresh air unit is a unit with outdoor fresh air as circulating air. The novel fan unit using the water-cooled heat exchanger has the advantages that the water-cooled heat exchanger such as a surface cooler is frozen and cracked in winter, so that the use safety of the novel fan unit is influenced, and the use experience of a user is also influenced. Therefore, in winter, the surface air cooler anti-freezing treatment needs to be carried out on the fresh air fan unit using the water-cooled heat exchanger.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention aims to provide a control method and device of a brand new fan unit, the brand new fan unit and a storage medium, and aims to solve the problems that the use safety of the brand new fan unit is influenced and the use experience of a user is influenced due to the fact that a surface cooler is frozen and cracked in winter of the brand new fan unit using a water-cooled heat exchanger, achieve the purpose that the surface cooler is prevented from being frozen and cracked by controlling the brand new fan unit using the water-cooled heat exchanger in an anti-freezing mode, guarantee the use safety of the brand new fan unit, and improve the use experience effect of the user.
The invention provides a control method of a fresh air unit, wherein the fresh air unit comprises the following steps: surface coolers and fans; the control method of the fresh air unit comprises the following steps: detecting a temperature parameter of the fresh air unit under the condition that the fresh air unit operates in a winter mode; the temperature parameters of the fresh air unit at least comprise: the air supply temperature of the fresh air unit; and controlling the fan wind gear or the fan start-stop of the fresh air fan unit according to the temperature parameter of the fresh air fan unit so as to at least realize the anti-freezing control of the surface cooler of the fresh air fan unit.
In some embodiments, controlling a fan gear or a fan start/stop of the fresh air fan group according to the temperature parameter of the fresh air fan group includes: controlling a fan wind shield of the fresh air unit to keep unchanged under the condition that the air supply temperature of the fresh air unit is equal to a first set temperature; under the condition that the air supply temperature of the fresh air fan set is higher than a first set temperature, if the fan gear of the fresh air fan set is not a target gear set by a user, controlling the fan gear of the fresh air fan set to improve the first set gear, and continuously detecting the air supply temperature of the fresh air fan set; under the condition that the air supply temperature of the fresh air fan set is higher than a first set temperature, if the fan gear of the fresh air fan set is a target gear set by a user, controlling the fan of the fresh air fan set to continuously operate according to the target gear, and continuously detecting the air supply temperature of the fresh air fan set; and under the condition that the air supply temperature of the fresh air unit is lower than a first set temperature, controlling the fan gear of the fresh air unit to reduce a second set gear, and continuously detecting the air supply temperature of the fresh air unit.
In some embodiments, after controlling the fan gear of the fresh air handling unit to decrease by the second set gear, controlling the fan gear or the fan start/stop of the fresh air handling unit according to the temperature parameter of the fresh air handling unit further includes: determining whether the air supply temperature of the fresh air fan is reduced to be lower than a second set temperature; the second set temperature is less than the first set temperature; if the air supply temperature of the fresh air unit is not reduced to be lower than a second set temperature, controlling the fresh air unit to continue to operate according to the operation mode that the fan gear of the fresh air unit is reduced by a second set gear, and continuing to detect the air supply temperature of the fresh air unit; the temperature parameter of the fresh air unit further comprises: the air inlet temperature of the fresh air unit; and if the air supply temperature of the fresh air unit is reduced to be lower than a second set temperature, controlling the fan wind gear or the fan start-stop of the fresh air unit according to the air inlet temperature of the fresh air unit.
In some embodiments, controlling the fan damper or the fan start/stop of the fresh air fan group according to the inlet air temperature of the fresh air fan group includes: under the condition that the air supply temperature of the fresh air fan set is lower than a second set temperature and the air inlet temperature of the fresh air fan set is higher than or equal to a third set temperature, controlling the fan wind gear of the fresh air fan set to be reduced to a set lowest wind gear, and continuously detecting the air supply temperature of the fresh air fan set; a third set temperature that is less than the second set temperature; the temperature parameter of the fresh air unit further comprises: the water inlet temperature of the fresh air fan unit; and under the condition that the air supply temperature of the fresh air unit is lower than a second set temperature and the air inlet temperature of the fresh air unit is lower than a third set temperature, controlling the fan wind gear or the fan start-stop of the fresh air unit according to the water inlet temperature of the fresh air unit.
In some embodiments, controlling the fan damper or the fan start/stop of the fresh air fan group according to the water inlet temperature of the fresh air fan group includes: under the condition that the inlet air temperature of the fresh air fan set is lower than a third set temperature and the inlet water temperature of the fresh air fan set is higher than a fourth set wind gear, controlling the wind gear of the fresh air fan set to be reduced to a set lowest wind gear, and continuously detecting the air supply temperature of the fresh air fan set; and under the condition that the inlet air temperature of the fresh air unit is less than a third set temperature and the inlet water temperature of the fresh air unit is less than or equal to a fourth set wind gear, controlling the fan of the fresh air unit to be closed, and continuously detecting the air supply temperature of the fresh air unit.
In another aspect, the present invention provides a control device for a fresh air handling unit, where the fresh air handling unit includes: surface coolers and fans; the control device of the fresh air unit comprises: the detection unit is configured to detect a temperature parameter of the fresh air handling unit under the condition that the fresh air handling unit operates in a winter mode; the temperature parameters of the fresh air unit at least comprise: the air supply temperature of the fresh air unit; and the control unit is configured to control the fan wind gear or the fan start and stop of the fresh air fan unit according to the temperature parameter of the fresh air fan unit so as to at least realize anti-freezing control on the surface air cooler of the fresh air fan unit.
In some embodiments, the controlling unit, controlling the fan gear or the fan start/stop of the fresh air fan group according to the temperature parameter of the fresh air fan group, includes: controlling a fan wind shield of the fresh air unit to keep unchanged under the condition that the air supply temperature of the fresh air unit is equal to a first set temperature; under the condition that the air supply temperature of the fresh air fan set is higher than a first set temperature, if the fan gear of the fresh air fan set is not a target gear set by a user, controlling the fan gear of the fresh air fan set to improve the first set gear, and continuously detecting the air supply temperature of the fresh air fan set; under the condition that the air supply temperature of the fresh air fan set is higher than a first set temperature, if the fan gear of the fresh air fan set is a target gear set by a user, controlling the fan of the fresh air fan set to continuously operate according to the target gear, and continuously detecting the air supply temperature of the fresh air fan set; and under the condition that the air supply temperature of the fresh air unit is lower than a first set temperature, controlling the fan gear of the fresh air unit to reduce a second set gear, and continuously detecting the air supply temperature of the fresh air unit.
In some embodiments, after controlling the fan gear of the fresh air handling unit to decrease by the second set gear, the control unit controls the fan gear or the fan start/stop of the fresh air handling unit according to the temperature parameter of the fresh air handling unit, and further includes: determining whether the air supply temperature of the fresh air fan is reduced to be lower than a second set temperature; the second set temperature is less than the first set temperature; if the air supply temperature of the fresh air unit is not reduced to be lower than a second set temperature, controlling the fresh air unit to continue to operate according to the operation mode that the fan gear of the fresh air unit is reduced by a second set gear, and continuing to detect the air supply temperature of the fresh air unit; the temperature parameter of the fresh air unit further comprises: the air inlet temperature of the fresh air unit; and if the air supply temperature of the fresh air unit is reduced to be lower than a second set temperature, controlling the fan wind gear or the fan start-stop of the fresh air unit according to the air inlet temperature of the fresh air unit.
In some embodiments, the controlling unit controls a fan wind gear or a fan start/stop of the fresh air fan set according to the inlet air temperature of the fresh air fan set, and includes: under the condition that the air supply temperature of the fresh air fan set is lower than a second set temperature and the air inlet temperature of the fresh air fan set is higher than or equal to a third set temperature, controlling the fan wind gear of the fresh air fan set to be reduced to a set lowest wind gear, and continuously detecting the air supply temperature of the fresh air fan set; a third set temperature that is less than the second set temperature; the temperature parameter of the fresh air unit further comprises: the water inlet temperature of the fresh air fan unit; and under the condition that the air supply temperature of the fresh air unit is lower than a second set temperature and the air inlet temperature of the fresh air unit is lower than a third set temperature, controlling the fan wind gear or the fan start-stop of the fresh air unit according to the water inlet temperature of the fresh air unit.
In some embodiments, the controlling unit controls a fan wind gear or a fan start/stop of the fresh air fan set according to the water inlet temperature of the fresh air fan set, and includes: under the condition that the inlet air temperature of the fresh air fan set is lower than a third set temperature and the inlet water temperature of the fresh air fan set is higher than a fourth set wind gear, controlling the wind gear of the fresh air fan set to be reduced to a set lowest wind gear, and continuously detecting the air supply temperature of the fresh air fan set; and under the condition that the inlet air temperature of the fresh air unit is less than a third set temperature and the inlet water temperature of the fresh air unit is less than or equal to a fourth set wind gear, controlling the fan of the fresh air unit to be closed, and continuously detecting the air supply temperature of the fresh air unit.
Matching with the above device, the present invention provides, in another aspect, a fresh air handling unit, comprising: the control device of the fresh air unit is described above.
In accordance with the above method, a further aspect of the present invention provides a storage medium, where the storage medium includes a stored program, and when the program runs, the device where the storage medium is located is controlled to execute the above method for controlling the fresh air handling unit.
Therefore, according to the scheme, a fresh air unit of the surface cooler is adopted in winter, the modes of water inlet temperature, air inlet temperature and air outlet temperature are collected, and when the outdoor temperature or the water supply temperature is lower, the fresh air is continuously conveyed indoors on the premise of ensuring that the surface cooler is not frozen; thereby, through carrying out the frostproofing control of surface cooler to the brand-new fan group that uses water-cooled heat exchanger, can avoid the surface cooler frost crack, guaranteed the safety in utilization of brand-new fan group, also promoted user's use and experienced.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic flow chart illustrating a control method for a fresh air handling unit according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating an embodiment of the method according to the present invention for controlling the temperature of the air supply according to the degree of decrease;
FIG. 3 is a schematic structural diagram of a control device of a fresh air handling unit according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an embodiment of a fresh air handling unit;
fig. 5 is a schematic flowchart of an embodiment of a method for controlling freezing prevention of a surface cooler of a fresh air fan set in winter.
The reference numbers in the embodiments of the present invention are as follows, in combination with the accompanying drawings:
1-a cold and heat source unit; 2-surface cooling device in the fresh air handling unit; 3-water supply pipeline; 4-a fan of a fresh air unit; 5-a water return pipeline; 6-coarse filter; 7-a medium-efficiency filter; 102-a detection unit; 104-control unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The type surface cooler that prevents frostbite that provides in the relevant scheme adopts a plurality of valve bodies, filter equipment etc. and it is poor to solve current surface cooler effect of preventing frostbite, and can not carry out the filter problem to aquatic impurity. However, the anti-freezing mode adopted by the anti-freezing type surface cooler is that water is introduced when the surface cooler is used, and water in the surface cooler is discharged when the surface cooler is not used, so that waste is caused, and the mode of arranging a pipeline at the water inlet is complex, and the cost is high.
According to an embodiment of the present invention, a method for controlling a fresh air handling unit is provided, as shown in fig. 1, which is a schematic flow chart of an embodiment of the method of the present invention. The brand-new fan group comprises: the surface cooler is as the surface cooler 2 in the new fan unit, and the fan is as new fan unit fan 4.
Fig. 4 is a schematic structural diagram of an embodiment of a fresh air unit. As shown in fig. 4, a fresh air handling unit includes: the air conditioner comprises a cold and heat source unit 1, a fresh air unit inner surface cooler 2, a water supply pipeline 3, a fresh air unit fan 4, a water return pipeline 5, a coarse filter 6 and a medium filter 7. The cold and heat source unit 1 enters the surface cooler 2 in the fresh air unit through the water supply pipeline 3. After passing through the surface cooler 2 in the fresh air unit, the air returns to the cold and heat source unit 1 through the water return pipe 5. And a fan 4 of the fresh air handling unit is arranged in cooperation with the surface cooler 2 in the fresh air handling unit. And a coarse filter 6 and a middle filter 7 are also arranged and matched with the surface cooler 2 in the fresh air handling unit. The cold and heat source unit 1 provides high-temperature hot water for the surface cooler 2 in the fresh air unit, the fresh air unit fan 4 introduces outdoor fresh air, and the fresh air is supplied to the room after exchanging heat with the high-temperature hot water in the surface cooler 2 in the fresh air unit.
The control method of the fresh air unit comprises the following steps: step S110 to step S120.
In step S110, a temperature parameter of the fresh air handling unit is detected when the fresh air handling unit is operating in the winter mode. The temperature parameters of the fresh air unit at least comprise: and the air supply temperature of the fresh air unit. If detect the air supply temperature of brand-new fan group, detect the air inlet temperature of brand-new fan group to detect the temperature of intaking of brand-new fan group.
In step S120, according to the temperature parameter of the fresh air handling unit, for example, according to at least one of the air supply temperature of the fresh air handling unit, the air intake temperature of the fresh air handling unit, and the water intake temperature of the fresh air handling unit, the blower damper or the blower start/stop of the fresh air handling unit is controlled, so as to at least achieve the freeze protection control of the surface air cooler of the fresh air handling unit, and certainly, the fresh air can be continuously delivered indoors under the condition that the surface air cooler is not frozen.
The scheme provided by the invention provides an anti-freezing control scheme for a surface cooler of a brand new fan set in winter, and mainly aims at a fresh air unit using the surface cooler, achieves the anti-freezing purpose by adopting a control mode through collecting the inlet water temperature, the inlet air temperature and the outlet air temperature, and continuously conveys fresh air to the indoor space under the condition of ensuring that the surface cooler is not frozen. The problem of the surface cooler of brand-new fan group prevent frostbite in winter is solved, the safety in utilization of brand-new fan group has been guaranteed, the control method who guarantees indoor new trend when the temperature is lower is provided moreover, user's use experience has been promoted.
In some embodiments, in step S120, the fan gear or the fan start/stop of the fresh air fan group is controlled according to the temperature parameter of the fresh air fan group, which includes any one of the following air supply temperature control situations:
the first blowing air temperature control case: and controlling the fan wind gear of the fresh air unit to be kept unchanged under the condition that the air supply temperature of the fresh air unit is equal to a first set temperature.
Second supply air temperature control case: and under the condition that the air supply temperature of the fresh air unit is higher than a first set temperature, if the fan gear of the fresh air unit is not the target gear set by the user, controlling the fan gear of the fresh air unit to increase the first set gear, and continuously detecting the air supply temperature of the fresh air unit. The first set gear may be first gear.
Third supply air temperature control scenario: and under the condition that the air supply temperature of the fresh air fan set is higher than a first set temperature, if the fan gear of the fresh air fan set is a target gear set by a user, controlling the fan of the fresh air fan set to continuously operate according to the target gear, and continuously detecting the air supply temperature of the fresh air fan set.
Fourth supply air temperature control scenario: and under the condition that the air supply temperature of the fresh air unit is lower than a first set temperature, controlling the fan gear of the fresh air unit to reduce a second set gear, and continuously detecting the air supply temperature of the fresh air unit. The second set gear may be the same as or different from the first set gear.
The scheme of the invention provides a control method for ensuring continuous fresh air supply and freezing prevention when the outdoor temperature is lower in the winter operation process of a fresh air unit adopting a surface cooler (such as the surface cooler 2 in the fresh air unit). Fig. 5 is a schematic flowchart of an embodiment of a method for controlling freezing prevention of a surface cooler of a fresh air fan set in winter. As shown in fig. 5, a method for controlling anti-freezing of a surface air cooler of a fresh air blower unit in winter includes:
And step 2, if the air supply temperature of the fresh air unit is equal to a first set temperature T1, controlling the wind level of a fan (such as a fan 4 of the fresh air unit) of the fresh air unit to be kept unchanged.
If the air supply temperature of the fresh air unit is greater than a first set temperature T1, detecting a fan gear of the fresh air unit: and if the fan gear of the fresh air fan set is not the gear set by the user, controlling the fan gear of the fresh air fan set to be increased by one gear, and continuously detecting the air supply temperature of the fresh air fan set.
If the air supply temperature of the fresh air unit is greater than a first set temperature T1, detecting a fan gear of the fresh air unit: and if the fan gear of the fresh air fan set is set by the user, controlling the fresh air fan set to continuously run according to the gear set by the user, and continuously detecting the air supply temperature of the fresh air fan set.
And 3, if the air supply temperature of the fresh air fan set is less than the first set temperature T1, controlling the fan wind gear of the fresh air fan set to be reduced by one gear, and continuously detecting the air supply temperature of the fresh air fan set.
In some embodiments, in a case that the supply air temperature of the fresh air handling unit is less than a first set temperature, after controlling the fan gear of the fresh air handling unit to decrease by a second set gear, controlling the fan gear or the fan start/stop of the fresh air handling unit according to the temperature parameter of the fresh air handling unit further includes: and controlling according to the reduction degree of the air supply temperature.
The following further describes a specific process of controlling according to the degree of reduction of the supply air temperature with reference to a flowchart of an embodiment of controlling according to the degree of reduction of the supply air temperature in the method of the present invention shown in fig. 2, including: step S210 to step S230.
Step S210, under the condition that the air supply temperature of the fresh air fan set is lower than a first set temperature, after the fan wind gear of the fresh air fan set is controlled to be reduced by a second set gear, whether the air supply temperature of the fresh air fan is reduced to be lower than the second set temperature is determined. The second set temperature is less than the first set temperature.
And step S220, if the air supply temperature of the fresh air unit is not reduced to be less than a second set temperature, controlling the fresh air unit to continue to operate according to an operation mode that the fan gear of the fresh air unit is reduced by a second set gear, and continuing to detect the air supply temperature of the fresh air unit.
Step S230, the temperature parameter of the fresh air unit further comprises: the air inlet temperature of the fresh air unit; and if the air supply temperature of the fresh air unit is reduced to be lower than a second set temperature, controlling the fan wind gear or the fan start-stop of the fresh air unit according to the air inlet temperature of the fresh air unit under the condition that the temperature parameter of the fresh air unit also comprises the air inlet temperature of the fresh air unit.
As shown in fig. 5, a method for controlling anti-freezing of a surface air cooler of a fresh air blower unit in winter further includes:
in step 3, if the air supply temperature of the fresh air fan set is less than the first set temperature T1 and the second set temperature T2 is less than the air supply temperature of the fresh air fan set and less than the first set temperature T1, the fresh air fan set is controlled to keep the current operation state, and the air supply temperature of the fresh air fan set is continuously detected. When the air supply temperature of the fresh air fan set is less than the second set temperature T2 and less than the first set temperature T1, the air inlet temperature of the fresh air fan set needs to be detected.
In the scheme of the invention, aiming at the fresh air handling unit adopting the surface cooler in winter, when the outdoor temperature or the water supply temperature is lower, the fresh air is continuously conveyed indoors by controlling the gear, the start and the stop of the fan and the like on the premise of ensuring that the surface cooler is not frozen. The surface cooler is prevented from being frozen through a control strategy. When the water supply temperature is lower, for guaranteeing indoor fresh air volume, can last the supply, reach the purpose through modes such as adjustment fan gear, opening and stopping.
In some embodiments, in step S230, the fan gear or the fan start/stop of the fresh air fan group is controlled according to the inlet air temperature of the fresh air fan group, which includes any one of the following inlet air temperature control situations:
first inlet air temperature control scenario: and under the condition that the air supply temperature of the fresh air fan set is lower than a second set temperature and the air inlet temperature of the fresh air fan set is higher than or equal to a third set temperature, controlling the fan wind gear of the fresh air fan set to be reduced to a set lowest wind gear, and continuously detecting the air supply temperature of the fresh air fan set. And the third set temperature is lower than the second set temperature.
The second inlet air temperature control scenario: the temperature parameter of the fresh air unit further comprises: the water inlet temperature of the fresh air fan unit; and under the condition that the air supply temperature of the fresh air unit is lower than a second set temperature and the air inlet temperature of the fresh air unit is lower than a third set temperature, under the condition that the temperature parameters of the fresh air unit also comprise the water inlet temperature of the fresh air unit, controlling the fan wind gear or the fan of the fresh air unit to start and stop according to the water inlet temperature of the fresh air unit.
As shown in fig. 5, a method for controlling anti-freezing of a surface air cooler of a fresh air blower unit in winter further includes:
and 4, when the inlet air temperature of the fresh air fan set is detected to be higher than a third set temperature T3 (the first set temperature T1 is higher than the second set temperature T2 is higher than the third set temperature T3), adjusting the fan wind gear of the fresh air fan set to be the lowest gear. At the moment, the air supply temperature of the fresh air unit is lower, but in order to ensure the indoor fresh air volume, the fans of the fresh air unit keep the lowest wind gear running, the wind gear of the fans of the fresh air unit is lowest, the air volume is small, the air supply speed is low, and the effect of reducing the indoor heat load is not obviously reduced, so that a certain fresh air volume can be kept indoors by using the lowest wind gear. And when the inlet air temperature of the fresh air fan set is less than a third set temperature T3, detecting the inlet water temperature of the fresh air fan set.
According to the scheme, when the temperature is lower in winter, the modes of reducing the windshield and the like are adopted, so that the indoor fresh air supply can be ensured, and the risk of freezing the surface cooler can be prevented. By setting a control strategy, the modes of controlling the gear, starting and stopping and the like of the fan are adopted, the problem that water needs to be drained for preventing freezing when the temperature is lower in winter in related schemes is solved, and the control mode is more reliable.
In some embodiments, the fan wind gear or the fan start and stop of the fresh air fan set is controlled according to the water inlet temperature of the fresh air fan set, and the method includes any one of the following water inlet temperature control situations:
first inlet water temperature control scenario: and under the condition that the inlet air temperature of the fresh air fan set is lower than a third set temperature and the inlet water temperature of the fresh air fan set is higher than a fourth set wind gear, controlling the wind gear of the fresh air fan set to be reduced to a set lowest wind gear, and continuously detecting the air supply temperature of the fresh air fan set.
Second inlet water temperature control scenario: and under the condition that the inlet air temperature of the fresh air unit is less than a third set temperature and the inlet water temperature of the fresh air unit is less than or equal to a fourth set wind gear, controlling the fan of the fresh air unit to be closed, and continuously detecting the air supply temperature of the fresh air unit.
As shown in fig. 5, a method for controlling anti-freezing of a surface air cooler of a fresh air blower unit in winter further includes:
and 5, if the water inlet temperature of the fresh air fan set is higher than the fourth set temperature T4, adjusting the fan wind gear of the fresh air fan set to the lowest gear for operation. At the moment, the air supply temperature of the fresh air unit is lower, and the indoor fresh air volume is ensured, so that the fan of the fresh air unit is operated at the lowest gear.
And if the water inlet temperature of the fresh air unit is less than the fourth set temperature T4, controlling the fan of the fresh air unit to be closed. At the moment, in order to prevent the surface cooler (such as the inner surface cooler 2 of the fresh air handling unit) from being frozen, the fan of the fresh air handling unit is closed, and the heat exchange between the outdoor temperature and the inner surface cooler (such as the inner surface cooler 2 of the fresh air handling unit) of the fresh air handling unit is cut off, so that the anti-freezing purpose is achieved.
And 6, completing circulation, and starting circulation by detecting the air supply temperature of the fresh air fan set again.
The scheme of the invention aims at the air conditioner which uses the surface cooler in winter and exchanges heat with outdoor air, on one hand, when the air supply temperature is reduced and the water inlet temperature is lower, the fresh air quantity to the indoor is ensured. On the other hand, the indoor heat load can be prevented from increasing due to the excessively low air supply temperature. And continuously conveying outdoor fresh air to the indoor space under the condition that the fan is not turned off.
Adopt the technical scheme of this embodiment, through the fresh air handling unit to adopting the surface cooler winter, gather into water temperature, air inlet temperature, air-out temperature mode, when outdoor temperature or water supply temperature are lower, through control fan gear, open and stop modes such as, under the prerequisite of guaranteeing that the surface cooler is not frozen out, continuously to indoor transport new trend. Thereby, through carrying out the frostproofing control of surface cooler to the brand-new fan group that uses water-cooled heat exchanger, can avoid the surface cooler frost crack, guaranteed the safety in utilization of brand-new fan group, also promoted user's use and experienced.
According to the embodiment of the invention, the control device of the fresh air unit corresponding to the control method of the fresh air unit is also provided. Referring to fig. 3, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The brand-new fan group comprises: the surface cooler is as the surface cooler 2 in the new fan unit, and the fan is as new fan unit fan 4.
Fig. 4 is a schematic structural diagram of an embodiment of a fresh air unit. As shown in fig. 4, a fresh air handling unit includes: the air conditioner comprises a cold and heat source unit 1, a fresh air unit inner surface cooler 2, a water supply pipeline 3, a fresh air unit fan 4, a water return pipeline 5, a coarse filter 6 and a medium filter 7. The cold and heat source unit 1 enters the surface cooler 2 in the fresh air unit through the water supply pipeline 3. After passing through the surface cooler 2 in the fresh air unit, the air returns to the cold and heat source unit 1 through the water return pipe 5. And a fan 4 of the fresh air handling unit is arranged in cooperation with the surface cooler 2 in the fresh air handling unit. And a coarse filter 6 and a middle filter 7 are also arranged and matched with the surface cooler 2 in the fresh air handling unit. The cold and heat source unit 1 provides high-temperature hot water for the surface cooler 2 in the fresh air unit, the fresh air unit fan 4 introduces outdoor fresh air, and the fresh air is supplied to the room after exchanging heat with the high-temperature hot water in the surface cooler 2 in the fresh air unit.
The control device of the fresh air unit comprises: a detection unit 102 and a control unit 104.
The detecting unit 102 is configured to detect a temperature parameter of the fresh air handling unit when the fresh air handling unit operates in the winter mode. The temperature parameters of the fresh air unit at least comprise: and the air supply temperature of the fresh air unit. If detect the air supply temperature of brand-new fan group, detect the air inlet temperature of brand-new fan group to detect the temperature of intaking of brand-new fan group. The specific function and processing of the detection unit 102 are shown in step S110.
And the control unit 104 is configured to control the fan wind gear or the fan start-stop of the fresh air fan unit according to the temperature parameter of the fresh air fan unit, such as at least one of the air supply temperature of the fresh air fan unit, the air inlet temperature of the fresh air fan unit and the water inlet temperature of the fresh air fan unit, so as to at least realize the anti-freezing control of the surface air cooler of the fresh air fan unit, and certainly, the fresh air can be continuously conveyed indoors under the condition that the surface air cooler is not frozen. The specific function and processing of the control unit 104 are referred to in step S120.
The scheme provided by the invention provides an anti-freezing control scheme for a surface cooler of a brand new fan set in winter, and mainly aims at a fresh air unit using the surface cooler, achieves the anti-freezing purpose by adopting a control mode through collecting the inlet water temperature, the inlet air temperature and the outlet air temperature, and continuously conveys fresh air to the indoor space under the condition of ensuring that the surface cooler is not frozen. The problem of the surface cooler of brand-new fan group prevent frostbite in winter is solved, the safety in utilization of brand-new fan group has been guaranteed, the controlling means who guarantees indoor new trend when the temperature is lower has been provided moreover, has promoted user's use and has experienced.
In some embodiments, the control unit 104 controls the fan gear or the fan start/stop of the fresh air fan group according to the temperature parameter of the fresh air fan group, including any one of the following air supply temperature control situations:
the first blowing air temperature control case: the control unit 104 is specifically configured to control the fan gear of the fresh air fan set to be kept unchanged when the air supply temperature of the fresh air fan set is equal to a first set temperature.
Second supply air temperature control case: the control unit 104 is specifically configured to, when the air supply temperature of the fresh air handling unit is greater than a first set temperature, if the fan gear of the fresh air handling unit is not the target gear set by the user, control the fan gear of the fresh air handling unit to increase the first set gear, and continue to detect the air supply temperature of the fresh air handling unit. The first set gear may be first gear.
Third supply air temperature control scenario: the control unit 104 is specifically configured to, when the air supply temperature of the fresh air handling unit is greater than a first set temperature, if the fan gear of the fresh air handling unit is a target gear set by a user, control the fan of the fresh air handling unit to continue to operate according to the target gear, and continue to detect the air supply temperature of the fresh air handling unit.
Fourth supply air temperature control scenario: the control unit 104 is specifically configured to, when the air supply temperature of the fresh air handling unit is lower than a first set temperature, control the fan gear of the fresh air handling unit to lower a second set gear, and continue to detect the air supply temperature of the fresh air handling unit. The second set gear may be the same as or different from the first set gear.
The scheme of the invention provides a control device for a fresh air handling unit adopting a surface cooler (such as the surface cooler 2 in the fresh air handling unit) in order to ensure continuous fresh air supply and freezing prevention when the outdoor temperature is lower in the winter operation process. Fig. 5 is a schematic flow chart of an embodiment of an anti-freezing control device for a surface cooler of a fresh air fan set in winter. As shown in fig. 5, a surface cooler anti-freezing control device for a winter fresh air blower set comprises:
And step 2, if the air supply temperature of the fresh air unit is equal to a first set temperature T1, controlling the wind level of a fan (such as a fan 4 of the fresh air unit) of the fresh air unit to be kept unchanged.
If the air supply temperature of the fresh air unit is greater than a first set temperature T1, detecting a fan gear of the fresh air unit: and if the fan gear of the fresh air fan set is not the gear set by the user, controlling the fan gear of the fresh air fan set to be increased by one gear, and continuously detecting the air supply temperature of the fresh air fan set.
If the air supply temperature of the fresh air unit is greater than a first set temperature T1, detecting a fan gear of the fresh air unit: and if the fan gear of the fresh air fan set is set by the user, controlling the fresh air fan set to continuously run according to the gear set by the user, and continuously detecting the air supply temperature of the fresh air fan set.
And 3, if the air supply temperature of the fresh air fan set is less than the first set temperature T1, controlling the fan wind gear of the fresh air fan set to be reduced by one gear, and continuously detecting the air supply temperature of the fresh air fan set.
In some embodiments, the controlling unit 104, when the supply air temperature of the fresh air handling unit is less than a first set temperature, after controlling the fan gear of the fresh air handling unit to decrease to a second set gear, controls the fan gear or the fan start/stop of the fresh air handling unit according to the temperature parameter of the fresh air handling unit, and further includes: the process of controlling according to the degree of reduction of the air supply temperature is as follows:
the control unit 104 is specifically configured to determine whether the supply air temperature of the fresh air fan is reduced to be less than a second set temperature after controlling the fan gear of the fresh air fan set to reduce a second set gear in the case that the supply air temperature of the fresh air fan set is less than the first set temperature. The second set temperature is less than the first set temperature. The specific functions and processes of the control unit 104 are also referred to in step S210.
The control unit 104 is specifically configured to, if the air supply temperature of the fresh air handling unit is not reduced to be less than a second set temperature, control the fresh air handling unit to continue to operate in an operation mode in which the fan gear of the fresh air handling unit is reduced by a second set gear, and continue to detect the air supply temperature of the fresh air handling unit. The specific functions and processes of the control unit 104 are also referred to in step S220.
The control unit 104 is specifically configured to be a temperature parameter of the fresh air handling unit, and further includes: the air inlet temperature of the fresh air unit; and if the air supply temperature of the fresh air unit is reduced to be lower than a second set temperature, controlling the fan wind gear or the fan start-stop of the fresh air unit according to the air inlet temperature of the fresh air unit under the condition that the temperature parameter of the fresh air unit also comprises the air inlet temperature of the fresh air unit. The specific function and processing of the control unit 104 are also referred to in step S230.
As shown in fig. 5, a surface cooler anti-freezing control device for a winter fresh air blower unit further comprises:
in step 3, if the air supply temperature of the fresh air fan set is less than the first set temperature T1 and the second set temperature T2 is less than the air supply temperature of the fresh air fan set and less than the first set temperature T1, the fresh air fan set is controlled to keep the current operation state, and the air supply temperature of the fresh air fan set is continuously detected. When the air supply temperature of the fresh air fan set is less than the second set temperature T2 and less than the first set temperature T1, the air inlet temperature of the fresh air fan set needs to be detected.
In the scheme of the invention, aiming at the fresh air handling unit adopting the surface cooler in winter, when the outdoor temperature or the water supply temperature is lower, the fresh air is continuously conveyed indoors by controlling the gear, the start and the stop of the fan and the like on the premise of ensuring that the surface cooler is not frozen. The surface cooler is prevented from being frozen through a control strategy. When the water supply temperature is lower, for guaranteeing indoor fresh air volume, can last the supply, reach the purpose through modes such as adjustment fan gear, opening and stopping.
In some embodiments, the control unit 104 controls the fan gear or the fan start/stop of the fresh air fan group according to the inlet air temperature of the fresh air fan group, including any one of the following inlet air temperature control situations:
first inlet air temperature control scenario: the control unit 104 is specifically configured to, when the air supply temperature of the fresh air handling unit is less than a second set temperature and the air inlet temperature of the fresh air handling unit is greater than or equal to a third set temperature, control the fan wind level of the fresh air handling unit to be reduced to a set lowest wind level, and continue to detect the air supply temperature of the fresh air handling unit. And the third set temperature is lower than the second set temperature.
The second inlet air temperature control scenario: the control unit 104 is specifically configured to be a temperature parameter of the fresh air handling unit, and further includes: the water inlet temperature of the fresh air fan unit; and under the condition that the air supply temperature of the fresh air unit is lower than a second set temperature and the air inlet temperature of the fresh air unit is lower than a third set temperature, under the condition that the temperature parameters of the fresh air unit also comprise the water inlet temperature of the fresh air unit, controlling the fan wind gear or the fan of the fresh air unit to start and stop according to the water inlet temperature of the fresh air unit.
As shown in fig. 5, a surface cooler anti-freezing control device for a winter fresh air blower unit further comprises:
and 4, when the inlet air temperature of the fresh air fan set is detected to be higher than a third set temperature T3 (the first set temperature T1 is higher than the second set temperature T2 is higher than the third set temperature T3), adjusting the fan wind gear of the fresh air fan set to be the lowest gear. At the moment, the air supply temperature of the fresh air unit is lower, but in order to ensure the indoor fresh air volume, the fans of the fresh air unit keep the lowest wind gear running, the wind gear of the fans of the fresh air unit is lowest, the air volume is small, the air supply speed is low, and the effect of reducing the indoor heat load is not obviously reduced, so that a certain fresh air volume can be kept indoors by using the lowest wind gear. And when the inlet air temperature of the fresh air fan set is less than a third set temperature T3, detecting the inlet water temperature of the fresh air fan set.
According to the scheme, when the temperature is lower in winter, the modes of reducing the windshield and the like are adopted, so that the indoor fresh air supply can be ensured, and the risk of freezing the surface cooler can be prevented. By setting a control strategy, the modes of controlling the gear, starting and stopping and the like of the fan are adopted, the problem that water needs to be drained for preventing freezing when the temperature is lower in winter in related schemes is solved, and the control mode is more reliable.
In some embodiments, the control unit 104 controls the fan gear or the fan start/stop of the fresh air fan group according to the inlet water temperature of the fresh air fan group, including any one of the following inlet water temperature control situations:
first inlet water temperature control scenario: the control unit 104 is specifically configured to control the fan wind level of the fresh air fan set to be reduced to a set lowest wind level and continue to detect the air supply temperature of the fresh air fan set under the condition that the air inlet temperature of the fresh air fan set is less than a third set temperature and the water inlet temperature of the fresh air fan set is greater than a fourth set wind level.
Second inlet water temperature control scenario: the control unit 104 is specifically configured to control the fans of the fresh air fan group to be turned off and continue to detect the air supply temperature of the fresh air fan group when the air inlet temperature of the fresh air fan group is less than a third set temperature and the water inlet temperature of the fresh air fan group is less than or equal to a fourth set wind gear.
As shown in fig. 5, a surface cooler anti-freezing control device for a winter fresh air blower unit further comprises:
and 5, if the water inlet temperature of the fresh air fan set is higher than the fourth set temperature T4, adjusting the fan wind gear of the fresh air fan set to the lowest gear for operation. At the moment, the air supply temperature of the fresh air unit is lower, and the indoor fresh air volume is ensured, so that the fan of the fresh air unit is operated at the lowest gear.
And if the water inlet temperature of the fresh air unit is less than the fourth set temperature T4, controlling the fan of the fresh air unit to be closed. At the moment, in order to prevent the surface cooler (such as the inner surface cooler 2 of the fresh air handling unit) from being frozen, the fan of the fresh air handling unit is closed, and the heat exchange between the outdoor temperature and the inner surface cooler (such as the inner surface cooler 2 of the fresh air handling unit) of the fresh air handling unit is cut off, so that the anti-freezing purpose is achieved.
And 6, completing circulation, and starting circulation by detecting the air supply temperature of the fresh air fan set again.
The scheme of the invention aims at the air conditioner which uses the surface cooler in winter and exchanges heat with outdoor air, on one hand, when the air supply temperature is reduced and the water inlet temperature is lower, the fresh air quantity to the indoor is ensured. On the other hand, the indoor heat load can be prevented from increasing due to the excessively low air supply temperature. And continuously conveying outdoor fresh air to the indoor space under the condition that the fan is not turned off.
Since the processes and functions implemented by the apparatus of this embodiment substantially correspond to the embodiments, principles and examples of the method, reference may be made to the related descriptions in the embodiments without being detailed in the description of this embodiment, which is not described herein again.
By adopting the technical scheme of the invention, the fresh air unit of the surface cooler is adopted in winter, the modes of water inlet temperature, air inlet temperature and air outlet temperature are collected, when the outdoor temperature or the water supply temperature is lower, the fresh air is continuously conveyed indoors by controlling the gear, starting and stopping and the like of the fan on the premise of ensuring that the surface cooler is not frozen, so that the supply of the indoor fresh air can be ensured, and the risk of preventing the surface cooler from being frozen can be achieved.
According to the embodiment of the invention, the fresh air unit corresponding to the control device of the fresh air unit is also provided. This brand-new fan group can include: the control device of the fresh air unit is described above.
Since the processing and functions of the fresh air handling unit of this embodiment are basically corresponding to the embodiments, principles and examples of the foregoing devices, the description of this embodiment is not given in detail, and reference may be made to the related descriptions in the foregoing embodiments, which are not described herein again.
By adopting the technical scheme of the invention, the fresh air unit of the surface cooler is adopted in winter, the modes of water inlet temperature, air inlet temperature and air outlet temperature are collected, when the outdoor temperature or the water supply temperature is lower, the fresh air is continuously conveyed indoors by controlling the gear, starting and stopping and the like of the fan on the premise of ensuring that the surface cooler is not frozen, the control method of the indoor fresh air is ensured when the temperature is lower, and the use experience of a user is improved.
According to an embodiment of the invention, a storage medium corresponding to a control method of a fresh air unit is further provided, and the storage medium comprises a stored program, wherein when the program runs, a device where the storage medium is located is controlled to execute the control method of the fresh air unit.
Since the processing and functions implemented by the storage medium of this embodiment substantially correspond to the embodiments, principles, and examples of the foregoing method, reference may be made to the related descriptions in the foregoing embodiments without being detailed in the description of this embodiment.
By adopting the technical scheme of the invention, the fresh air unit of the surface cooler is adopted in winter, the modes of water inlet temperature, air inlet temperature and air outlet temperature are collected, when the outdoor temperature or the water supply temperature is lower, the modes of controlling the gear position, starting and stopping of the fan and the like are adopted, on the premise of ensuring that the surface cooler is not frozen, the fresh air is continuously conveyed indoors, the water is not required to be drained for freezing prevention when the temperature is lower in winter, and the control mode is more reliable.
In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (12)
1. The control method of the fresh air unit is characterized in that the fresh air unit comprises the following steps: surface coolers and fans;
the control method of the fresh air unit comprises the following steps:
detecting a temperature parameter of the fresh air unit under the condition that the fresh air unit operates in a winter mode; the temperature parameters of the fresh air unit at least comprise: the air supply temperature of the fresh air unit;
and controlling the fan wind gear or the fan start-stop of the fresh air fan unit according to the temperature parameter of the fresh air fan unit so as to at least realize the anti-freezing control of the surface cooler of the fresh air fan unit.
2. The method of controlling the fresh air handling unit of claim 1, wherein controlling a fan gear or a fan start/stop of the fresh air handling unit based on a temperature parameter of the fresh air handling unit comprises:
controlling a fan wind shield of the fresh air unit to keep unchanged under the condition that the air supply temperature of the fresh air unit is equal to a first set temperature;
under the condition that the air supply temperature of the fresh air fan set is higher than a first set temperature, if the fan gear of the fresh air fan set is not a target gear set by a user, controlling the fan gear of the fresh air fan set to improve the first set gear, and continuously detecting the air supply temperature of the fresh air fan set;
under the condition that the air supply temperature of the fresh air fan set is higher than a first set temperature, if the fan gear of the fresh air fan set is a target gear set by a user, controlling the fan of the fresh air fan set to continuously operate according to the target gear, and continuously detecting the air supply temperature of the fresh air fan set;
and under the condition that the air supply temperature of the fresh air unit is lower than a first set temperature, controlling the fan gear of the fresh air unit to reduce a second set gear, and continuously detecting the air supply temperature of the fresh air unit.
3. The method for controlling the fresh air handling unit according to claim 2, wherein after controlling the fan gear of the fresh air handling unit to decrease by a second predetermined gear, controlling the fan gear or the fan start/stop of the fresh air handling unit according to the temperature parameter of the fresh air handling unit, further comprises:
determining whether the air supply temperature of the fresh air fan is reduced to be lower than a second set temperature; the second set temperature is less than the first set temperature;
if the air supply temperature of the fresh air unit is not reduced to be lower than a second set temperature, controlling the fresh air unit to continue to operate according to the operation mode that the fan gear of the fresh air unit is reduced by a second set gear, and continuing to detect the air supply temperature of the fresh air unit;
the temperature parameter of the fresh air unit further comprises: the air inlet temperature of the fresh air unit; and if the air supply temperature of the fresh air unit is reduced to be lower than a second set temperature, controlling the fan wind gear or the fan start-stop of the fresh air unit according to the air inlet temperature of the fresh air unit.
4. The method of controlling the fresh air handling unit of claim 3, wherein controlling the fan damper or the fan start-stop of the fresh air handling unit based on the inlet air temperature of the fresh air handling unit comprises:
under the condition that the air supply temperature of the fresh air fan set is lower than a second set temperature and the air inlet temperature of the fresh air fan set is higher than or equal to a third set temperature, controlling the fan wind gear of the fresh air fan set to be reduced to a set lowest wind gear, and continuously detecting the air supply temperature of the fresh air fan set; a third set temperature that is less than the second set temperature;
the temperature parameter of the fresh air unit further comprises: the water inlet temperature of the fresh air fan unit; and under the condition that the air supply temperature of the fresh air unit is lower than a second set temperature and the air inlet temperature of the fresh air unit is lower than a third set temperature, controlling the fan wind gear or the fan start-stop of the fresh air unit according to the water inlet temperature of the fresh air unit.
5. The method of claim 4, wherein controlling the fan damper or the fan start/stop of the fresh air fan unit according to the inlet water temperature of the fresh air fan unit comprises:
under the condition that the inlet air temperature of the fresh air fan set is lower than a third set temperature and the inlet water temperature of the fresh air fan set is higher than a fourth set wind gear, controlling the wind gear of the fresh air fan set to be reduced to a set lowest wind gear, and continuously detecting the air supply temperature of the fresh air fan set;
and under the condition that the inlet air temperature of the fresh air unit is less than a third set temperature and the inlet water temperature of the fresh air unit is less than or equal to a fourth set wind gear, controlling the fan of the fresh air unit to be closed, and continuously detecting the air supply temperature of the fresh air unit.
6. The utility model provides a controlling means of brand-new fan unit which characterized in that, brand-new fan unit includes: surface coolers and fans;
the control device of the fresh air unit comprises:
the detection unit is configured to detect a temperature parameter of the fresh air handling unit under the condition that the fresh air handling unit operates in a winter mode; the temperature parameters of the fresh air unit at least comprise: the air supply temperature of the fresh air unit;
and the control unit is configured to control the fan wind gear or the fan start and stop of the fresh air fan unit according to the temperature parameter of the fresh air fan unit so as to at least realize anti-freezing control on the surface air cooler of the fresh air fan unit.
7. The apparatus of claim 6, wherein the control unit controls a fan gear or a fan start/stop of the fresh air fan assembly based on the temperature parameter of the fresh air fan assembly comprises:
controlling a fan wind shield of the fresh air unit to keep unchanged under the condition that the air supply temperature of the fresh air unit is equal to a first set temperature;
under the condition that the air supply temperature of the fresh air fan set is higher than a first set temperature, if the fan gear of the fresh air fan set is not a target gear set by a user, controlling the fan gear of the fresh air fan set to improve the first set gear, and continuously detecting the air supply temperature of the fresh air fan set;
under the condition that the air supply temperature of the fresh air fan set is higher than a first set temperature, if the fan gear of the fresh air fan set is a target gear set by a user, controlling the fan of the fresh air fan set to continuously operate according to the target gear, and continuously detecting the air supply temperature of the fresh air fan set;
and under the condition that the air supply temperature of the fresh air unit is lower than a first set temperature, controlling the fan gear of the fresh air unit to reduce a second set gear, and continuously detecting the air supply temperature of the fresh air unit.
8. The apparatus of claim 7, wherein the control unit controls a fan gear or a fan start/stop of the fresh air fan assembly according to the temperature parameter of the fresh air fan assembly after controlling the fan gear of the fresh air fan assembly to decrease to a second set gear, further comprising:
determining whether the air supply temperature of the fresh air fan is reduced to be lower than a second set temperature; the second set temperature is less than the first set temperature;
if the air supply temperature of the fresh air unit is not reduced to be lower than a second set temperature, controlling the fresh air unit to continue to operate according to the operation mode that the fan gear of the fresh air unit is reduced by a second set gear, and continuing to detect the air supply temperature of the fresh air unit;
the temperature parameter of the fresh air unit further comprises: the air inlet temperature of the fresh air unit; and if the air supply temperature of the fresh air unit is reduced to be lower than a second set temperature, controlling the fan wind gear or the fan start-stop of the fresh air unit according to the air inlet temperature of the fresh air unit.
9. The apparatus of claim 8, wherein the control unit controls a fan gear or a fan start/stop of the fresh air fan assembly according to an inlet air temperature of the fresh air fan assembly, and comprises:
under the condition that the air supply temperature of the fresh air fan set is lower than a second set temperature and the air inlet temperature of the fresh air fan set is higher than or equal to a third set temperature, controlling the fan wind gear of the fresh air fan set to be reduced to a set lowest wind gear, and continuously detecting the air supply temperature of the fresh air fan set; a third set temperature that is less than the second set temperature;
the temperature parameter of the fresh air unit further comprises: the water inlet temperature of the fresh air fan unit; and under the condition that the air supply temperature of the fresh air unit is lower than a second set temperature and the air inlet temperature of the fresh air unit is lower than a third set temperature, controlling the fan wind gear or the fan start-stop of the fresh air unit according to the water inlet temperature of the fresh air unit.
10. The apparatus of claim 9, wherein the control unit controls a fan gear or a fan start/stop of the fresh air fan assembly according to a water inlet temperature of the fresh air fan assembly, and comprises:
under the condition that the inlet air temperature of the fresh air fan set is lower than a third set temperature and the inlet water temperature of the fresh air fan set is higher than a fourth set wind gear, controlling the wind gear of the fresh air fan set to be reduced to a set lowest wind gear, and continuously detecting the air supply temperature of the fresh air fan set;
and under the condition that the inlet air temperature of the fresh air unit is less than a third set temperature and the inlet water temperature of the fresh air unit is less than or equal to a fourth set wind gear, controlling the fan of the fresh air unit to be closed, and continuously detecting the air supply temperature of the fresh air unit.
11. The utility model provides a brand-new fan group which characterized in that includes: the control device of the fresh air handling unit of any of claims 6 to 10.
12. A storage medium, characterized in that the storage medium comprises a stored program, wherein when the program runs, the storage medium is controlled to execute the control method of the fresh air handling unit according to any one of claims 1 to 5.
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| CN202111407589.3A CN114110927A (en) | 2021-11-24 | 2021-11-24 | Control method and device for fresh air set, fresh air set and storage medium |
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| CN202111407589.3A CN114110927A (en) | 2021-11-24 | 2021-11-24 | Control method and device for fresh air set, fresh air set and storage medium |
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| CN2310956Y (en) * | 1997-04-14 | 1999-03-17 | 刘宗源 | Anti-freezing surface air cooler |
| CN104728999A (en) * | 2013-12-23 | 2015-06-24 | 珠海格力电器股份有限公司 | Anti-freezing control method and device for heat exchanger of air conditioner |
| CN106605107A (en) * | 2014-09-25 | 2017-04-26 | 松下知识产权经营株式会社 | Heat exchanger ventilator |
| CN110207340A (en) * | 2019-06-10 | 2019-09-06 | 广东美的暖通设备有限公司 | The new blower of Total heat exchange and its control method |
| CN112665157A (en) * | 2020-12-29 | 2021-04-16 | 青岛理工大学 | Air conditioner fresh air control method |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2310956Y (en) * | 1997-04-14 | 1999-03-17 | 刘宗源 | Anti-freezing surface air cooler |
| CN104728999A (en) * | 2013-12-23 | 2015-06-24 | 珠海格力电器股份有限公司 | Anti-freezing control method and device for heat exchanger of air conditioner |
| CN106605107A (en) * | 2014-09-25 | 2017-04-26 | 松下知识产权经营株式会社 | Heat exchanger ventilator |
| CN110207340A (en) * | 2019-06-10 | 2019-09-06 | 广东美的暖通设备有限公司 | The new blower of Total heat exchange and its control method |
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Application publication date: 20220301 |