CN115727478A - Air conditioning unit frostless control method and system and air conditioner - Google Patents
Air conditioning unit frostless control method and system and air conditioner Download PDFInfo
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- CN115727478A CN115727478A CN202211456620.7A CN202211456620A CN115727478A CN 115727478 A CN115727478 A CN 115727478A CN 202211456620 A CN202211456620 A CN 202211456620A CN 115727478 A CN115727478 A CN 115727478A
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The invention relates to the technical field of air conditioning units, in particular to a control method and a control system for preventing frosting of an air conditioning unit and the air conditioning unit.
Description
Technical Field
The invention relates to the technical field of air conditioning units, in particular to a control method and system for preventing an air conditioning unit from frosting and an air conditioner.
Background
The dew point temperature is the temperature at which the air is cooled to saturation without changing both the moisture content and the air pressure. It is the temperature at which water vapor in the air turns into dew, also called the frost point temperature.
In winter, when the outdoor environment temperature is very low, the temperature of the evaporator side is low when the unit heats, once the temperature is lower than the dew point temperature, the evaporator side frosts, the heat exchange capacity of the unit is affected in the frosted state, moreover, the defrosting treatment is needed in the frosted state, and the energy efficiency of the unit is affected. The traditional defrosting control method is to directly acquire data of a temperature sensor and a humidity sensor to judge the frosting condition. In this case, if the temperature sensor and/or the humidity sensor fail or malfunction, the unit cannot operate normally.
Disclosure of Invention
In view of the above, the present invention provides a method and a system for controlling frosting prevention of an air conditioning unit, and an air conditioner, so as to solve the problems that in the prior art, when defrosting is performed on the unit, energy efficiency of the unit is affected, and when a temperature sensor and/or a humidity sensor fails or malfunctions, the unit cannot normally operate.
According to a first aspect of the embodiments of the present invention, there is provided a frost prevention control method for an air conditioning unit, including:
acquiring a reference humidity value of the air conditioning unit in the current state;
calculating to obtain dew point temperature according to the reference humidity value and the outdoor environment temperature;
adjusting the output frequency and the operation time of the compressor according to the difference between the evaporator temperature and the dew point temperature and the difference between the indoor environment temperature and the temperature set by the user; the temperature of the evaporator is the saturation temperature of a refrigerant inlet of the fin heat exchanger.
Preferably, the acquiring the reference humidity value of the air conditioning unit in the current state includes:
calculating actual capacity data of the unit in the current state;
and finding a corresponding reference humidity value in a preposed database according to the actual capacity data and the outdoor environment temperature in the current state.
Preferably, the preposed database at least comprises: and under the conditions of different temperatures and humidity, the capacity data of the unit under a set state.
Preferably, the setting state includes at least one of: compressor frequency, throttle valve opening and wind shield parameters of the unit.
Preferably, the actual capability data is:
the product of the difference between the inlet water temperature and the outlet water temperature and the water flow.
Preferably, the adjusting the output frequency and the operation time of the compressor according to the difference between the evaporator temperature and the dew point temperature and the difference between the indoor ambient temperature and the user-set temperature comprises:
if the difference value between the evaporator temperature and the dew point temperature is greater than a preset temperature, judging whether the indoor environment temperature is greater than a user set temperature;
if so, reducing the first preset frequency by the compressor, and operating for a first preset time;
if not, the compressor increases the second preset frequency and operates for a second preset time.
Preferably, the method further comprises:
if the difference value between the evaporator temperature and the dew point temperature is less than or equal to a preset temperature, and the evaporator temperature is greater than the dew point temperature, judging whether the indoor environment temperature is greater than the temperature set by a user;
if so, the compressor reduces a third preset frequency and operates for a third preset time;
if not, the compressor increases the fourth preset frequency and operates for a fourth preset time.
Preferably, the method further comprises the following steps: if the difference value between the evaporator temperature and the dew point temperature is less than or equal to a preset temperature, and the evaporator temperature is less than or equal to the dew point temperature, judging whether the indoor environment temperature is greater than the temperature set by a user;
if so, reducing the fifth preset frequency by the compressor, and operating for a fifth preset time;
if not, the compressor increases the sixth preset frequency or maintains the output frequency of the compressor, and operates for a sixth preset time.
Preferably, the method further comprises the following steps: if not, the compressor increases a sixth preset frequency or maintains the output frequency of the compressor, and operates for a sixth preset time, specifically: judging whether the indoor heating rate is greater than zero or not;
if so, maintaining the output frequency of the compressor and operating for a sixth preset time;
if not, the compressor increases the sixth preset frequency and operates for a sixth preset time.
Preferably, the first preset frequency is smaller than the third preset frequency and smaller than the fifth preset frequency, and the first preset duration is longer than the third preset duration and longer than the fifth preset duration;
the second preset frequency is greater than the fourth preset frequency and greater than the sixth preset frequency, and the second preset duration is greater than the fourth preset duration and greater than the sixth preset duration.
According to a second aspect of the embodiments of the present invention, there is provided an air conditioning unit frost prevention control system, including:
the acquisition module is used for acquiring a reference humidity value of the air conditioning unit in the current state;
the calculation module is used for calculating to obtain the dew point temperature according to the reference humidity value and the environment temperature;
and the adjusting module is used for adjusting the output frequency and the operation time of the compressor according to the difference value between the temperature of the evaporator and the dew point temperature and the difference value between the indoor environment temperature and the temperature set by a user.
According to a third aspect of embodiments of the present invention, there is provided an air conditioner including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein, the first and the second end of the pipe are connected with each other,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method described above.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
the method comprises the steps of obtaining a reference humidity value of the air conditioning unit in the current state, calculating to obtain dew point temperature according to the reference humidity value and the environment temperature, adjusting output frequency and operation time of a compressor according to a difference value between evaporator temperature and dew point temperature and a difference value between indoor environment temperature and user set temperature, wherein the evaporator temperature is saturation temperature of a refrigerant inlet of a fin heat exchanger.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a flow chart illustrating a method for controlling the frostless of an air conditioning unit according to an exemplary embodiment;
FIG. 2 is a flow chart illustrating a method for controlling frostless of an air conditioning unit according to another exemplary embodiment;
fig. 3 is a block diagram illustrating a frostless control system of an air conditioning unit according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Example one
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for controlling frostless of an air conditioning unit according to an exemplary embodiment, where as shown in fig. 1, the method includes:
s01, acquiring a reference humidity value of the air conditioning unit in the current state;
s02, calculating to obtain a dew point temperature according to the reference humidity value and the outdoor environment temperature;
s03, adjusting the output frequency and the operation time of the compressor according to the difference between the evaporator temperature and the dew point temperature and the difference between the indoor environment temperature and the temperature set by a user; the temperature of the evaporator is the saturation temperature of a refrigerant inlet of the fin heat exchanger.
It should be noted that, in the heating mode of the wall-mounted air conditioning unit (water cooling unit or air cooling unit), such as a cabinet, or the like, the control method for preventing the air conditioning unit from frosting in the dehumidification mode, the air supply mode, and the refrigeration mode is not enabled.
The user-set temperature is a target water temperature in the water chiller unit and a target indoor temperature in the air chiller unit, that is, a target temperature set by the user.
The temperature set by the user is a temperature value set by the user through an air conditioner remote controller, an APP of the mobile terminal, and the like.
It should be noted that, in this embodiment, a reference humidity value of the air conditioning unit in the current state is obtained, a dew point temperature is obtained through calculation according to the reference humidity value and the ambient temperature, and an output frequency and an operation time of the compressor are adjusted according to a difference between an evaporator temperature and the dew point temperature and a difference between an indoor ambient temperature and a user-set temperature.
In a specific practice, in step S01, the reference humidity value of the air conditioning unit in the current state is obtained, and there are various implementation manners, one of which is:
calculating the actual capacity data of the unit in the current state;
and finding a corresponding reference humidity value in a preposed database according to the actual capacity data and the outdoor environment temperature in the current state.
In a specific practice, the pre-database includes at least: and under the conditions of different temperatures and humidity, the capacity data of the unit under a set state.
In particular practice, a state is set, including at least one of: compressor frequency, throttle opening, and wind gear parameters of the unit.
Specifically, taking a water cooling unit as an example, the capacity data represents the heating capacity of the air conditioning unit, if the heating capacity is large, the capacity data is high, if the heating capacity is small, the capacity data is low, and the capacity data is calculated by a product of a difference value between an inlet water temperature and an outlet water temperature and a water flow, specifically, the calculation formula is as follows: q = cm Δ t, where Δ t is equal to the inlet water temperature minus the outlet water temperature, c represents the specific heat capacity of the water, and m is the mass of the water.
When the actual capacity data is calculated, the unit is required to be actually started to operate in an outdoor environment, the outdoor environment temperature and the indoor environment temperature in the current state are detected, and the outdoor environment temperature and the indoor environment temperature reach the set time of working in the set operation state after the operation period is reached, wherein the set time is set for the unit to operate under the operation parameters of fixed compressor frequency, fixed throttle valve opening degree, wind gear and the like in the set state, and the time with stable performance can be set according to historical experience or actual needs after the set time is set for the unit state, and generally can be set to be 10-30min.
Specifically, the pre-data is data recorded in the test process of the air conditioning unit during development and design, and comprises the following steps: under the conditions of different environmental temperatures and different humidities, different dry balls, wet balls, capacity data (heating capacity of the unit) of the unit and the like.
It should be noted that the application of the pre-data means that the utilization rate of the test output in the unit development process is maximized, and the unit operation can be effectively controlled under the condition that the temperature and humidity sensors are invalid or cancelled, so that the comfort level of the user is improved.
It should be noted that, in this embodiment, the actual capacity data is obtained by calculation according to the inlet water temperature, the outlet water temperature, and the water flow, and in combination with the current ambient temperature, the corresponding reference humidity value may be found in the pre-database, and the humidity sensor is not required to measure, and in the case of a failure of the humidity sensor, the unit may still be controlled to operate normally. Specifically, calculating the dew point temperature according to the humidity value is prior art, and this embodiment is not described in detail.
In a specific practice, the output frequency and the operation time of the compressor are adjusted according to the difference between the evaporator temperature and the dew point temperature, and the difference between the indoor environment temperature and the user-set temperature in step S03, and there are various implementations,
1) If the difference value between the evaporator temperature and the dew point temperature is greater than a preset temperature, judging whether the indoor environment temperature is greater than a user set temperature;
if so, reducing the first preset frequency by the compressor, and operating for a first preset time;
if not, the compressor increases the second preset frequency and operates for a second preset time.
2) Further comprising:
if the difference value between the evaporator temperature and the dew point temperature is less than or equal to a preset temperature, and the evaporator temperature is greater than the dew point temperature, judging whether the indoor environment temperature is greater than the temperature set by a user;
if so, the compressor reduces a third preset frequency and operates for a third preset time;
if not, the compressor increases the fourth preset frequency and operates for a fourth preset time.
3) Further comprising:
if the difference value between the evaporator temperature and the dew point temperature is less than or equal to a preset temperature, and the evaporator temperature is less than or equal to the dew point temperature, judging whether the indoor environment temperature is greater than the temperature set by a user;
if so, reducing the fifth preset frequency by the compressor, and operating for a fifth preset time;
if not, the compressor increases the sixth preset frequency or maintains the output frequency of the compressor, and operates for a sixth preset time.
4) Specifically, if not, increasing a sixth preset frequency or maintaining the output frequency of the compressor, and operating for a sixth preset time period, specifically: judging whether the indoor temperature rise rate is greater than zero or not;
if so, maintaining the output frequency of the compressor and operating for a sixth preset time;
if not, the compressor increases the sixth preset frequency and operates for a sixth preset time.
The first preset frequency is smaller than the third preset frequency and smaller than the fifth preset frequency, and the first preset time length is longer than the third preset time length and longer than the fifth preset time length;
the second preset frequency is greater than the fourth preset frequency and greater than the sixth preset frequency, and the second preset duration is greater than the fourth preset duration and greater than the sixth preset duration.
Specifically, the preset temperature may be 0 to 5 ℃, specifically, the preset temperature may be 2 ℃;
the first preset frequency may be 1 to 3Hz, specifically, the first preset frequency is 2Hz;
the second preset frequency may be 7 to 9Hz, specifically, the second preset frequency is 8Hz;
the third preset frequency may be 4 to 6Hz, and specifically, the third preset frequency is 5Hz;
the fourth preset frequency may be 4 to 6Hz, and specifically, the fourth preset frequency is 5Hz;
the fifth preset frequency may be 7 to 9Hz, and specifically, the fifth preset frequency is 8Hz;
the sixth preset frequency may be 1 to 3Hz, and specifically, the sixth preset frequency is 2Hz;
the first preset time period may be 5 to 10min, and specifically, the first preset time period may be 5min;
the second preset time period may be 5 to 10min, and specifically, the second preset time period may be 5min;
the third preset time period may be 2 to 4min, and specifically, the third preset time period may be 3min;
the fourth preset time period may be 2 to 4min, and specifically, the fourth preset time period may be 3min;
the fifth preset time period may be 0.5 to 2min, and specifically, the fifth preset time period may be 1min;
the sixth preset time period may be 0.5 to 2min, and specifically, the sixth preset time period may be 1min;
it should be noted that, if the evaporator temperature is 5 ℃, the dew point temperature is 0 ℃, the difference is 5 (there is no risk of frosting), which is 2 ℃ higher than the preset temperature, and the indoor ambient temperature is 25 ℃, the user-set temperature is 20 ℃, the output frequency of the compressor at 2Hz is reduced, and the operation is performed for 5min.
If the evaporator temperature is 5 ℃, the dew point temperature is 0 ℃, the difference is 5 (no risk of frosting), the temperature is 2 ℃ higher than the preset temperature, the indoor environment temperature is 20 ℃, the temperature set by a user is 25 ℃, the output frequency of the compressor at 8Hz is increased, and the operation is carried out for 5min.
If the temperature of the evaporator is 1 ℃, the dew point temperature is 0 ℃, the difference is 1 and is less than the preset temperature by 2 ℃, but the temperature of the evaporator is greater than the dew point temperature, and the indoor environment temperature is 25 ℃ which is greater than the temperature set by the user and is 20 ℃, the output frequency of the compressor with the frequency of 5Hz is reduced, and the operation is carried out for 3min.
And if the temperature of the evaporator is 1 ℃, the dew point temperature is 0 ℃, the difference is 1 and is less than the preset temperature by 2 ℃, but the temperature of the evaporator is greater than the dew point temperature, and the indoor environment temperature is 20 ℃ and is less than the temperature set by the user by 25 ℃, increasing the output frequency of the compressor by 5Hz and operating for 3min.
If the temperature of the evaporator is-2 ℃, the dew point temperature is 0 ℃, the difference is-2 (the risk of frosting exists), the temperature is less than the preset temperature of 2 ℃, and the indoor environment temperature is 25 ℃ higher than the temperature set by the user and is 20 ℃, the output frequency of the compressor at 8Hz is reduced, and the operation is carried out for 1min.
If the temperature of the evaporator is-2 ℃, the dew point temperature is 0 ℃, the difference is-2 (the risk of frosting exists), the difference is less than the preset temperature 2 ℃, the indoor environment temperature is 20 ℃, the temperature set by a user is 25 ℃, if the indoor temperature rise rate is greater than 0 at the moment, the output frequency of the compressor is maintained, the running time is 1min, and if the indoor temperature rise rate is less than or equal to 0 at the moment, the output frequency of the compressor with the frequency of 2Hz is increased, and the running time is 1min.
It should be noted that, after the preset time is reached, the evaporator temperature and the dew point temperature, the indoor environment temperature and the user set temperature are detected, so that dynamic balance is realized, and the air conditioning unit is ensured not to frost.
Referring to fig. 2, fig. 2 is a flowchart illustrating a method for controlling frostless of an air conditioning unit according to another exemplary embodiment, where as shown in fig. 2, the method includes:
s11, under different temperature and humidity states, the unit acquires corresponding capacity data b in a set state a and stores the capacity data b in a preposed database;
step S12, starting up (outdoor environment);
s13, normally operating, detecting outdoor environment temperature and detecting indoor environment temperature;
step S14, when a set operation period is reached, the unit operates the computer unit capacity b' (actually operates) in a set state a;
s15, finding a corresponding reference humidity value in a pre-database according to the ambient temperature and the unit capacity b' of the unit in the current state;
s16, finding out a corresponding dew point temperature in a preposed database according to the reference humidity value and the outdoor environment temperature;
step S17, judging T Steaming machine Whether C is greater than T Dew (ii) a If yes, go to step S18; if not, go to step S20;
step S18, if yes, T is judged At room temperature Whether or not greater than T Target ；
Step S19, if yes, reducing the output capacity b1 of the compressor and the running time t1, and turning to the step S13;
if not, improving the output capacity a1 of the compressor and the running time t1, and turning to the step S13;
step S20, if not, judging T Steaming food Whether or not it is greater than T Dew If yes, go to step S21, otherwise go to step S23;
T at room temperature Whether or not greater than T Target ；
Step S21, judging T At room temperature Whether or not greater than T Target ；
Step S22, if yes, reducing the output capacity b2 of the compressor and the running time t2, and turning to step S13;
if not, improving the output capacity a2 of the compressor and the running time t2, and turning to the step S13;
step S23, judging T At room temperature Whether or not greater than T A target;
step S24, if yes, reducing the output capacity b3 of the compressor and the running time t2, and turning to step S13;
step S25, if not, judging whether the indoor temperature rise rate is larger than 0;
step S26, if yes, the output capacity of the compressor is maintained, the running time is t3, and the operation is transferred to the step S13;
if not, the output capacity a3 of the compressor is increased, the running time t3 is increased, and the process goes to step S13.
It should be noted that, the running time t1 > t2 > t3; the output capacity a1 > a2 > a3 of the compressor is improved; reduced compressor output capacity b3 > b2 > b1; where Ttarget represents a user-set temperature.
Example two
Fig. 3 is a block diagram illustrating an air conditioning unit frost prevention control system 300 according to an exemplary embodiment, where, as shown in fig. 3, the system includes:
an obtaining module 301, configured to obtain a reference humidity value of the air conditioning unit in a current state;
a calculating module 302, configured to calculate a dew point temperature according to the reference humidity value and the ambient temperature;
and the adjusting module 303 is configured to adjust the output frequency and the operation time of the compressor according to the difference between the evaporator temperature and the dew point temperature, and the difference between the indoor environment temperature and the user-set temperature.
It should be noted that, in the heating mode of the wall-mounted air conditioning unit (water cooling unit or air cooling unit), such as a cabinet, or the like, the control method for preventing the air conditioning unit from frosting in the dehumidification mode, the air supply mode, and the refrigeration mode is not enabled.
The user-set temperature is a target water temperature in the water chiller unit and a target indoor temperature in the air chiller unit, that is, a target temperature set by the user.
It should be noted that, in this embodiment, the obtaining module 301 is configured to obtain a reference humidity value of the air conditioning unit in a current state, the calculating module 302 is configured to calculate a dew point temperature according to the reference humidity value and an ambient temperature, and the adjusting module 303 is configured to adjust an output frequency and an operation time of the compressor according to a difference between an evaporator temperature and the dew point temperature and a difference between an indoor ambient temperature and a user-set temperature.
EXAMPLE III
An air conditioner comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein, the first and the second end of the pipe are connected with each other,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method described above.
It should be noted that, in the heating mode of the wall-mounted air conditioning unit (water cooling unit or air cooling unit), such as a cabinet, or the like, the control method for preventing the air conditioning unit from frosting in the dehumidification mode, the air supply mode, and the refrigeration mode is not enabled.
It should be noted that, as the implementation manner of each module in this embodiment can refer to the related description in the first embodiment, this embodiment is not described again.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (12)
1. A control method for preventing frosting of an air conditioning unit is characterized by comprising the following steps:
acquiring a reference humidity value of the air conditioning unit in the current state;
calculating to obtain dew point temperature according to the reference humidity value and the outdoor environment temperature;
adjusting the output frequency and the operation time of the compressor according to the difference between the evaporator temperature and the dew point temperature and the difference between the indoor environment temperature and the temperature set by the user; the temperature of the evaporator is the saturation temperature of a refrigerant inlet of the fin heat exchanger.
2. The method according to claim 1, wherein the obtaining of the reference humidity value of the air conditioning unit in the current state comprises:
calculating actual capacity data of the unit in the current state;
and finding a corresponding reference humidity value in a preposed database according to the actual capacity data and the outdoor environment temperature in the current state.
3. The method according to claim 2, wherein the pre-database includes at least: and under the conditions of different temperatures and humidity, the capacity data of the unit under a set state.
4. The method of claim 3, wherein the setting of the state comprises at least one of: compressor frequency, throttle opening, and wind gear parameters of the unit.
5. The method of claim 2, wherein the actual capability data is:
the product of the difference between the inlet water temperature and the outlet water temperature and the water flow.
6. The method of claim 1, wherein adjusting the output frequency and the run time of the compressor based on the difference between the evaporator temperature and the dew point temperature, and the difference between the indoor ambient temperature and the user set temperature comprises:
if the difference value between the evaporator temperature and the dew point temperature is greater than a preset temperature, judging whether the indoor environment temperature is greater than a user set temperature;
if so, reducing the first preset frequency by the compressor, and operating for a first preset time;
if not, the compressor increases the second preset frequency and operates for a second preset time.
7. The method of claim 6, further comprising:
if the difference value between the evaporator temperature and the dew point temperature is less than or equal to a preset temperature, and the evaporator temperature is greater than the dew point temperature, judging whether the indoor environment temperature is greater than the temperature set by a user;
if so, reducing a third preset frequency by the compressor, and operating for a third preset time;
if not, the compressor increases a fourth preset frequency and operates for a fourth preset time.
8. The method of claim 7, further comprising: if the difference value between the evaporator temperature and the dew point temperature is less than or equal to a preset temperature, and the evaporator temperature is less than or equal to the dew point temperature, judging whether the indoor environment temperature is greater than the temperature set by a user;
if so, reducing the fifth preset frequency by the compressor, and operating for a fifth preset time;
if not, the compressor increases the sixth preset frequency or maintains the output frequency of the compressor, and operates for a sixth preset time.
9. The method according to claim 8, wherein if not, the compressor increases a sixth preset frequency or maintains the output frequency of the compressor, and operates for a sixth preset time period, specifically: judging whether the indoor heating rate is greater than zero or not;
if so, maintaining the output frequency of the compressor and operating for a sixth preset time;
if not, the compressor increases a sixth preset frequency and operates for a sixth preset time.
10. The method according to any one of claims 6 to 9, wherein the first predetermined frequency is less than the third predetermined frequency and less than the fifth predetermined frequency, and the first predetermined duration is greater than the third predetermined duration and greater than the fifth predetermined duration;
the second preset frequency is greater than the fourth preset frequency and greater than the sixth preset frequency, and the second preset duration is greater than the fourth preset duration and greater than the sixth preset duration.
11. The utility model provides an air conditioning unit control system that does not frost which characterized in that includes:
the acquisition module is used for acquiring a reference humidity value of the air conditioning unit in the current state;
the calculation module is used for calculating to obtain the dew point temperature according to the reference humidity value and the environment temperature;
the adjusting module is used for adjusting the output frequency and the operation time of the compressor according to the difference value between the evaporator temperature and the dew point temperature and the difference value between the indoor environment temperature and the temperature set by a user; the temperature of the evaporator is the saturation temperature of a refrigerant inlet of the fin heat exchanger.
12. An air conditioner, comprising:
the method comprises the following steps: at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-10.
Priority Applications (1)
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| CN117846942A (en) * | 2024-03-08 | 2024-04-09 | 湖南捷工医疗科技有限公司 | Multifunctional automatic gas detection equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117846942A (en) * | 2024-03-08 | 2024-04-09 | 湖南捷工医疗科技有限公司 | Multifunctional automatic gas detection equipment |
| CN117846942B (en) * | 2024-03-08 | 2024-05-10 | 湖南捷工医疗科技有限公司 | Multifunctional automatic gas detection equipment |
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