CN111561765A - Control method for rapid refrigeration or rapid heating and variable frequency air conditioner - Google Patents
Control method for rapid refrigeration or rapid heating and variable frequency air conditioner Download PDFInfo
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- CN111561765A CN111561765A CN201910520744.9A CN201910520744A CN111561765A CN 111561765 A CN111561765 A CN 111561765A CN 201910520744 A CN201910520744 A CN 201910520744A CN 111561765 A CN111561765 A CN 111561765A
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 112
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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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
- F24F11/67—Switching between heating and cooling modes
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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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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 for rapid refrigeration or rapid heating and a variable frequency air conditioner, wherein the method comprises the following steps: acquiring the outdoor environment temperature, the indoor environment temperature and the temperature in a heat exchanger tube in real time, and acquiring the temperature set by a user; comparing the indoor environment temperature with the temperature set by the user, and selecting to enter a rapid cooling mode or a rapid heating mode according to a comparison result; when entering a rapid refrigeration mode, comparing the temperature in the heat exchanger tube with the temperature of the target tube, and controlling the frequency of the compressor to perform rapid refrigeration; when the heat exchanger enters a quick heating mode, the temperature in the heat exchanger pipe is compared with the target pipe temperature, and the frequency of the compressor is controlled to carry out quick heating. The invention increases the working frequency of the compressor according to the target pipe temperature, so that the temperature in the heat exchanger pipe is close to the target temperature, and the variable frequency air conditioner outputs the maximum refrigerating capacity or heating capacity, thereby achieving the purpose of quick refrigeration or quick heating.
Description
Technical Field
The invention relates to the field of application of variable frequency air conditioners, in particular to a control method for rapid refrigeration or rapid heating and a variable frequency air conditioner.
Background
With the development of the inverter air conditioner, the requirements of users on the inverter air conditioner are not only on the function of refrigeration or heating; in hot summer or cold winter, the air conditioner can not rapidly refrigerate or rapidly heat, so that the temperature of a room rapidly reaches the temperature required by a user, and the method is one of purchasing indexes for evaluating the good and poor performance of the air conditioner by the user.
In the existing frequency conversion air conditioner, the purpose of quick refrigeration or heating under various climatic conditions can be realized only by determining the operating frequency of a compressor according to the climatic conditions; when the climate changes frequently, the operation frequency of the compressor cannot be accurately determined according to the climate conditions, and the effect of rapid cooling or heating cannot be achieved.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a control method for rapid refrigeration or rapid heating and a variable frequency air conditioner, aiming at the defects of the prior art, wherein the target pipe temperature is set, the working frequency of a compressor is increased according to the target pipe temperature, so that the variable frequency air conditioner outputs the maximum refrigeration quantity or heating quantity, the indoor temperature quickly reaches the temperature required by a user, and the purpose of rapid refrigeration or rapid heating is achieved.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a control method of rapid cooling, wherein the control method of rapid cooling comprises the following steps:
when entering a refrigeration mode, acquiring the outdoor environment temperature, the indoor environment temperature and the temperature in a heat exchanger tube in real time, and acquiring the temperature set by a user;
comparing the indoor environment temperature with the temperature set by the user, and selecting to enter a rapid refrigeration mode according to a comparison result;
and when the rapid refrigeration mode is entered, comparing the temperature in the heat exchanger tube with the temperature of a preset refrigeration target tube, and controlling the frequency of the compressor according to the comparison result to perform rapid refrigeration.
Further, when entering the cooling mode, the method collects the outdoor environment temperature, the indoor environment temperature and the temperature in the heat exchanger tube in real time, and further comprises the following steps before acquiring the temperature set by the user:
presetting a refrigeration target pipe temperature, wherein the refrigeration target pipe temperature is obtained according to the indoor environment temperature and the outdoor environment temperature.
Further, the comparing the indoor environment temperature with the user-set temperature, and selecting to enter the fast cooling mode according to the comparison result specifically includes the following steps:
comparing the indoor environment temperature with the user set temperature;
and when the indoor environment temperature is higher than the temperature set by the user, selecting to enter the rapid cooling mode.
Further, when entering the rapid cooling mode, comparing the temperature in the heat exchanger tube with a preset cooling target tube temperature, and controlling the frequency of the compressor according to the comparison result, wherein the rapid cooling specifically comprises the following steps:
when the rapid refrigeration mode is entered, acquiring the preset refrigeration target pipe temperature according to the indoor environment temperature and the outdoor environment temperature;
comparing the temperature in the heat exchanger tube with the temperature of the preset refrigeration target tube;
and when the temperature in the heat exchanger pipe is higher than the preset refrigeration target pipe temperature, controlling the compressor to increase the current frequency by a first preset frequency.
Further, when the temperature in the heat exchanger tube is higher than the preset target refrigeration tube temperature, the method for controlling the compressor to increase the current frequency by a first preset frequency comprises the following steps:
and when the indoor environment temperature is lower than the temperature set by the user, ending the quick cooling mode.
Further, before comparing the indoor environment temperature with the user set temperature, the method further comprises the following steps:
judging whether the refrigeration mode is entered for the first time;
and when the refrigeration mode is entered for the first time, controlling the compressor to operate for a first preset time.
Further, when entering a rapid cooling mode, comparing the temperature in the heat exchanger tube with a preset cooling target tube temperature, and controlling the frequency of the compressor according to the comparison result, and after performing rapid cooling, the method further comprises the following steps:
and setting an adjusting period of the compressor, and if the indoor environment temperature is higher than the set temperature of the user in the adjusting period, entering the rapid refrigeration mode.
A control method of rapid heating, wherein the control method of rapid heating comprises the following steps:
when the heating mode is entered, acquiring the outdoor environment temperature, the indoor environment temperature and the temperature in a heat exchanger tube in real time, and acquiring the temperature set by a user;
comparing the indoor environment temperature with the temperature set by the user, and selecting to enter a rapid heating mode according to a comparison result;
and when the heat exchanger enters the rapid heating mode, comparing the temperature in the heat exchanger tube with the preset heating target tube temperature, and controlling the frequency of the compressor according to the comparison result to perform rapid heating.
Further, when entering a heating mode, the method collects the outdoor environment temperature, the indoor environment temperature and the temperature in the heat exchanger pipe in real time, and further comprises the following steps before acquiring the temperature set by a user:
presetting a heating target pipe temperature, wherein the heating target pipe temperature is obtained in advance according to the indoor environment temperature and the outdoor environment temperature.
Further, the comparing the indoor environment temperature with the user-set temperature, and selecting to enter the rapid heating mode according to the comparison result specifically includes the following steps:
comparing the indoor environment temperature with the user set temperature;
and when the indoor environment temperature is lower than the temperature set by the user, selecting to enter the rapid heating mode.
Further, when entering the rapid heating mode, comparing the temperature in the heat exchanger tube with a preset heating target tube temperature, and controlling the frequency of the compressor according to the comparison result, the rapid heating specifically includes the following steps:
when entering the rapid heating mode, acquiring the preset heating target pipe temperature according to the indoor environment temperature and the outdoor environment temperature;
comparing the temperature in the heat exchanger tube with the preset heating target tube temperature;
and when the temperature in the heat exchanger pipe is lower than the preset heating target pipe temperature, controlling the compressor to increase the current frequency by a second preset frequency.
Further, when the temperature in the heat exchanger tube is lower than the preset heating target tube temperature, the method for controlling the compressor to increase the current frequency by a second preset frequency comprises the following steps:
and when the indoor environment temperature is greater than the user set temperature, ending the rapid heating mode.
Further, before comparing the indoor environment temperature with the user set temperature, the method further comprises the following steps:
judging whether the heating mode is entered for the first time;
and when the heating mode is initially entered, controlling the compressor to operate for a second preset time.
Further, when entering a rapid heating mode, comparing the temperature in the heat exchanger tube with the preset temperature of the target tube to control the frequency of the compressor according to the comparison result, and after performing rapid heating, the method further comprises the following steps:
and setting an adjusting period of the compressor, and if the indoor environment temperature is lower than the set temperature of the user in the adjusting period, entering the rapid heating mode.
A variable frequency air conditioner comprises an indoor unit and an outdoor unit, wherein a heat exchanger, a processor connected with the heat exchanger and a memory connected with the processor are arranged in the indoor unit;
a tube temperature sensor for detecting the temperature in the heat exchanger tube, an indoor environment sensor for detecting the indoor environment temperature and an outdoor environment sensor for detecting the outdoor environment temperature are arranged in a tube disc of the heat exchanger; the pipe temperature sensor, the indoor environment sensor and the outdoor environment sensor are respectively connected with the processor;
the memory stores a control program for rapid cooling and a control program for rapid heating, the control program for rapid cooling being executed by the processor to implement the control method for rapid cooling, and the control program for rapid heating being executed by the processor to implement the control method for rapid heating.
The invention provides a control method for rapid refrigeration or rapid heating and a variable frequency air conditioner.A refrigeration target pipe temperature and a heating target pipe temperature are preset, and under a refrigeration mode, if the temperature in a heat exchanger pipe acquired in real time is higher than the refrigeration target pipe temperature, a rapid refrigeration mode is entered, and the working frequency of a compressor is improved; in the heating mode, if the temperature in the heat exchanger pipe acquired in real time is lower than the temperature of a heating target pipe, the rapid heating mode is entered, and the working frequency of the compressor is improved; the frequency of the compressor is adjusted to enable the temperature in the heat exchanger tube to quickly reach the refrigerating target tube temperature or the heating target tube temperature, so that the inverter air conditioner outputs the maximum refrigerating capacity or heating capacity to achieve the effect of quick refrigeration or quick heating.
Drawings
Fig. 1 is a flow chart of a control method of rapid cooling according to a preferred embodiment of the present invention.
FIG. 2 is a flow chart of a control method for rapid heating according to a preferred embodiment of the present invention.
Fig. 3 is a flow chart of the inverter air conditioner of the invention for performing rapid refrigeration in a refrigeration mode.
Fig. 4 is a flow chart of the inverter air conditioner for performing rapid heating in the heating mode.
Fig. 5 is a functional schematic diagram of the inverter air conditioner of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
As shown in fig. 1, the method for controlling rapid cooling according to the preferred embodiment of the present invention includes the following steps:
step S110, when entering a refrigeration mode, acquiring the outdoor environment temperature, the indoor environment temperature and the temperature in the heat exchanger tube in real time, and acquiring the temperature set by a user.
In the embodiment, the rapid refrigeration is realized according to the heat exchange principle of the inverter air conditioner, and when the temperature difference between the temperature of the heat exchanger coil of the inverter air conditioner and the indoor environment temperature is larger, the refrigeration output of the inverter air conditioner is maximized by increasing the frequency of the compressor, and the refrigeration speed is higher; therefore, the refrigeration target pipe temperature of the heat exchanger pipe disc can be set by utilizing the heat exchange principle, and when the variable frequency air conditioner operates, the temperature in the heat exchanger pipe disc reaches the refrigeration target pipe temperature by adjusting the operating frequency of the compressor, so that refrigeration can be rapidly carried out.
It should be noted that, in this embodiment, the target cooling pipe temperature needs to be set in the memory of the inverter air conditioner in advance, that is, before the inverter air conditioner is started to operate, the target cooling pipe temperature needs to be set in the memory.
Specifically, the refrigeration target tube temperatures are as shown in table 1 below:
in table 1 above, Tw represents outdoor ambient temperature, and Tn represents indoor ambient temperature.
As can be seen from table 1 above, the target cooling pipe temperature is set according to the outdoor ambient temperature and the indoor ambient temperature, such as: when the outdoor ambient temperature is 40 ℃ and the indoor ambient temperature is 30 ℃, the temperature of the refrigeration target pipe can be set to 9 ℃.
Namely, the following steps are also included before the step S110:
step S110a, a refrigeration target pipe temperature is preset, and the refrigeration target pipe temperature is obtained according to the indoor environment temperature and the outdoor environment temperature.
After the refrigeration target pipe temperature is set, when the inverter air conditioner is started, the inverter air conditioner can enter a refrigeration mode or a heating mode according to the temperature set by a user, for example, the temperature set by the user is 16 ℃, and the inverter air conditioner enters the refrigeration mode according to the temperature set by the user, namely 16 ℃; when the variable frequency air conditioner enters a refrigeration mode, the variable frequency air conditioner can acquire the outdoor environment temperature, the indoor environment temperature and the temperature in a heat exchanger pipe in real time; specifically, the outdoor environment temperature can be collected in real time through an outdoor environment sensor, the indoor environment temperature can be collected in real time through an indoor environment sensor, and the temperature in a heat exchanger tube can be collected in real time through a tube temperature sensor in a heat exchanger; the variable frequency air conditioner acquires the set temperature of a user when the variable frequency air conditioner is started while acquiring the temperature; the corresponding preset refrigeration target pipe temperature can be obtained through the outdoor environment temperature and the indoor environment temperature which are collected in real time, the indoor environment temperature which is collected in real time can be compared through the obtained user set temperature, and therefore the frequency conversion air conditioner can selectively enter a quick refrigeration mode from the refrigeration mode through comparison results.
And step S120, comparing the indoor environment temperature with the temperature set by the user, and selecting to enter a rapid refrigeration mode according to a comparison result.
In this embodiment, after the inverter air conditioner enters the refrigeration mode, whether the inverter air conditioner enters the refrigeration mode for the first time is judged by obtaining the running time of the compressor; when the inverter air conditioner enters a refrigeration mode for the first time, controlling a compressor to run for a first preset time (for example, the first preset time is 2 minutes); by controlling the compressor to operate for the first preset time, the compressor can be prevented from running in an overload mode when the variable frequency air conditioner enters the refrigeration mode for the first time.
Namely, the step S120 is preceded by the following steps:
step S120a, determining whether the cooling mode is entered for the first time;
and step S120b, when the refrigeration mode is firstly entered, controlling the compressor to operate for a first preset time.
After the inverter air conditioner controls the compressor to operate for a first preset time, comparing the indoor environment temperature acquired in real time with the temperature set by a user, and selecting to enter a rapid refrigeration mode according to a comparison result; when the indoor environment temperature acquired in real time is higher than the temperature set by the user, selecting to enter a rapid refrigeration mode; such as: the indoor environment temperature collected in real time is 30 ℃, the temperature set by a user is 16 ℃, and after comparison, the indoor environment temperature collected in real time is greater than the temperature set by the user, and the rapid refrigeration mode is entered.
In this embodiment, the inverter air conditioner is turned on and operated for a first preset time, and if the condition of fast cooling is satisfied, the inverter air conditioner enters a fast cooling mode.
Namely, the step S120 specifically includes the following steps:
step S121, comparing the indoor environment temperature with the temperature set by the user;
and step S122, when the indoor environment temperature is higher than the temperature set by the user, selecting to enter the rapid cooling mode.
And step S130, when entering the rapid refrigeration mode, comparing the temperature in the heat exchanger tube with the temperature of a preset refrigeration target tube, and controlling the frequency of the compressor according to the comparison result to perform rapid refrigeration.
In this embodiment, when the inverter air conditioner enters the fast cooling mode, the preset cooling target pipe temperature is obtained according to the indoor environment temperature and the outdoor environment temperature collected in real time, the temperature in the heat exchanger pipe collected in real time is compared through the cooling target pipe temperature, and then the increase and decrease of the frequency of the compressor are adjusted according to the comparison result and the control logic.
If the temperature in the heat exchanger tube acquired in real time is greater than the preset target refrigeration tube temperature, which indicates that the actual temperature in the heat exchanger tube is far higher than the target refrigeration temperature at the moment, the working frequency of the compressor needs to be increased, so that the actual tube temperature in the heat exchanger tube is reduced to the target refrigeration temperature; such as: the outdoor environment temperature collected in real time is 40 ℃, the indoor environment temperature collected in real time is 30 ℃, and the temperature in the heat exchanger tube collected in real time is 20 ℃; by combining the table 1, it can be obtained that the temperature of the refrigeration target pipe is 9 ℃, and the actual temperature in the heat exchanger pipe at this time is higher than the temperature of the refrigeration target pipe, so that the compressor needs to be controlled to increase the current frequency by a first preset frequency; for example, the frequency of the compressor entering the cooling mode is 10Hz, the first preset frequency is 2Hz, and the frequency of the compressor entering the rapid cooling mode is 12 Hz; by improving the working frequency of the compressor, the inverter air conditioner outputs the maximum refrigerating capacity, and the aim of quick refrigeration is fulfilled.
That is, the step S130 specifically includes the following steps:
step S131, when entering the rapid cooling mode, obtaining the preset cooling target pipe temperature according to the indoor environment temperature and the outdoor environment temperature;
step S132, comparing the temperature in the heat exchanger tube with the temperature of the preset refrigeration target tube;
step S133, when the temperature in the heat exchanger tube is greater than the preset target cooling tube temperature, controlling the compressor to increase the current frequency by a first preset frequency.
The following steps are also included after the step S133:
and step S134, when the indoor environment temperature is lower than the user set temperature, ending the rapid cooling mode.
In this embodiment, if the temperature in the heat exchanger tube collected in real time is equal to the preset refrigeration target tube temperature, it indicates that the actual temperature in the heat exchanger tube is consistent with the refrigeration target temperature at this time, and at this time, the frequency of the compressor is kept unchanged; such as: the frequency of the compressor is 10Hz when the air conditioner enters the refrigeration mode, and at the moment, the frequency of the compressor is only required to be kept at 10 Hz.
In this embodiment, if the temperature in the heat exchanger tube collected in real time is less than the preset refrigeration target tube temperature, it indicates that the frequency of the inverter air conditioner exceeds the reliability range at this time, that is, the inverter air conditioner does not need such high operating frequency; at the moment, the working frequency of the compressor needs to be reduced, so that the actual pipe temperature is controlled to be the refrigerating target pipe temperature, and the variable frequency air conditioner is ensured to operate within the reliable operation range; such as: the frequency of the compressor entering the cooling mode is 12Hz, and in this mode, the normal operating frequency of the compressor is 10Hz, and at this time, the operating frequency of the compressor is already out of the normal range, and the current frequency of the compressor needs to be reduced from 12Hz to 10 Hz.
In this embodiment, in the process of controlling the frequency of the compressor, it is also necessary to set the regulation period of the compressor, such as: the adjusting period is 30 seconds, namely the temperature in the heat exchanger tube and the temperature of the refrigerating target tube are compared every 30 seconds, and then the operating frequency of the compressor is controlled and adjusted according to the comparison result; and if the condition of the quick refrigeration is met in the period, executing the quick refrigeration mode, and if the condition of the quick refrigeration is not met, ending the quick refrigeration mode.
Preferably, in this embodiment, the control manner of the fast cooling mode is:
if T2 > T2ctgt, then F target frequency = F current frequency +2 Hz;
if T2 < (T2ctgt-1), then F target frequency = F current frequency-2 Hz;
if (T2ctgt-1) is less than or equal to T2 and less than or equal to T2ctgt, the target frequency = F current frequency;
wherein, T2 represents the temperature in the heat exchanger pipe collected in real time, T2ctgt represents the preset refrigeration target pipe temperature, F target frequency represents the operating frequency after the compressor is adjusted, and F current frequency represents the current operating frequency of the compressor.
In the control process of the rapid cooling mode, the temperature in the heat exchanger tube and the temperature of the cooling target tube are judged every 30 seconds, and the frequency of the compressor is adjusted accordingly.
After the frequency of the compressor is adjusted each time, the variable frequency air conditioner can judge the indoor environment temperature collected in real time and the temperature set by a user; when the indoor environment temperature acquired in real time is judged to be lower than the user set temperature, the indoor environment temperature is shown to reach the user set temperature, and the quick refrigeration mode can be ended.
By setting the adjusting period of the compressor (the adjusting period is 30 seconds), if the condition of quick refrigeration is met in the period, the operating frequency of the compressor is correspondingly adjusted, so that the refrigerating capacity output by the variable frequency air conditioner is maximized, and the purpose of quick refrigeration is achieved.
The fast cooling mode is explained below by specific examples:
as shown in fig. 3, when the inverter air conditioner is started to perform cooling, it is first determined whether to enter a cooling mode for the first time, and if so, the inverter air conditioner is operated for 2 minutes; after the variable frequency air conditioner runs for 2 minutes, judging whether Tn is larger than Ts +1 (Tn represents the indoor environment temperature, and Ts represents the user set temperature); and when Tn is more than Ts +1, controlling the compressor to perform quick refrigeration.
When the fast refrigeration is carried out, if T2 is detected to be larger than T2ctgt, the frequency of the compressor is controlled to be as follows: f target frequency = F current frequency +2 Hz; if T2 < (T2ctgt-1) is detected, the frequency of the compressor is controlled to be: f target frequency = F current frequency-2 Hz; if the detection result (T2ctgt-1) is more than or equal to T2 and less than or equal to T2ctgt, controlling the frequency of the compressor as follows: f target frequency = F current frequency; and when Tn is detected to be less than or equal to Ts +1, controlling the quick refrigeration mode to end.
Namely, the step of entering the rapid cooling mode in the cooling mode comprises the following steps:
step S511, starting a cooling mode;
step S512, judging whether the refrigeration is performed for the first time; if yes, go to step S513; if not, executing step S517;
step S513, judging whether the running time is more than or equal to 2 minutes; if yes, go to step S514; if not, go to step S512;
step S514, judging whether Tn is more than Ts + 1; if yes, go to step S515; if not, executing step S517;
step S515, performing rapid cooling control: if T2 > T2ctgt, then F target frequency = F current frequency +2 Hz; if T2 < (T2ctgt-1), then F target frequency = F current frequency-2 Hz; if (T2ctgt-1) is less than or equal to T2 and less than or equal to T2ctgt, the target frequency = F current frequency;
step S516, judging whether Tn is less than or equal to Ts + 1; if yes, go to step S517; if not, go to step S515;
and step S517, finishing the quick cooling.
In summary, in this embodiment, by setting a target cooling temperature in a memory of the inverter air conditioner in advance, when it is detected that the indoor environment temperature is higher than the temperature set by the user, the fast cooling mode is entered; under the quick refrigeration mode, when the temperature in the heat exchanger pipe collected in real time is higher than the refrigeration target temperature, the frequency of the compressor is increased, so that the temperature in the heat exchanger pipe reaches the refrigeration target temperature, the heat exchange capacity of the indoor heat exchanger is exerted to the maximum, the room temperature quickly reaches the temperature required by a user, and the quick refrigeration effect is realized.
Example two
As shown in fig. 2, the control method for fast heating according to the preferred embodiment of the present invention includes the following steps:
step S210, when the heating mode is entered, the outdoor environment temperature, the indoor environment temperature and the temperature in the heat exchanger tube are collected in real time, and the temperature set by the user is obtained.
In this embodiment, realize fast heating according to inverter air conditioner's heat transfer principle, consequently, need set up the target pipe temperature of heating of heat exchanger tube dish, when inverter air conditioner moves, through the operating frequency who adjusts the compressor, make the temperature in the heat exchanger tube dish reach the target pipe temperature of heating, can heat fast.
It should be noted that, in this embodiment, the heating target pipe temperature needs to be set in the memory of the inverter air conditioner in advance, that is, before the inverter air conditioner is started to operate, the heating target pipe temperature needs to be set in the memory.
Specifically, the heating target tube temperatures are as shown in table 2 below:
the heating target pipe temperature is set according to the outdoor environment temperature and the indoor environment temperature, such as: when the outdoor environment temperature is 10 ℃ and the indoor environment temperature is 24 ℃, the heating target pipe temperature can be set to be 50 ℃.
Namely, the step S210 is preceded by the following steps:
step S210a, presetting a heating target pipe temperature, wherein the heating target pipe temperature is obtained in advance according to the indoor environment temperature and the outdoor environment temperature.
After the heating target pipe temperature is set, when the inverter air conditioner is started, the inverter air conditioner can enter a cooling mode or a heating mode according to the temperature set by a user, for example, the temperature set by the user is 30 ℃, and the inverter air conditioner enters the heating mode according to the temperature set by the user, which is 30 ℃; when the variable frequency air conditioner enters a heating mode, the variable frequency air conditioner can acquire the outdoor environment temperature, the indoor environment temperature and the temperature in the heat exchanger pipe in real time, and the acquisition mode is the same as that in the first embodiment; the same as that in the first embodiment is that, while the temperature is collected, the variable frequency air conditioner also obtains the set temperature of the user when the air conditioner is started.
And S220, comparing the indoor environment temperature with the temperature set by the user, and selecting to enter a rapid heating mode according to a comparison result.
In the embodiment, after the inverter air conditioner enters the heating mode, whether the inverter air conditioner enters the heating mode for the first time is judged by acquiring the running time of the compressor; when the inverter air conditioner enters a heating mode for the first time, controlling the compressor to operate for a second preset time (for example, the second preset time is 2 minutes); by controlling the compressor to operate for the second preset time, the compressor can be prevented from running in an overload mode when the variable frequency air conditioner enters the heating mode for the first time.
Namely, the step S220 is preceded by the following steps:
step S220a, determining whether to enter the heating mode for the first time;
and step S220b, controlling the compressor to operate for a second preset time when the heating mode is entered for the first time.
After the variable frequency air conditioner controls the compressor to operate for a second preset time, comparing the indoor environment temperature collected in real time with the temperature set by a user, and selecting to enter a rapid heating mode according to a comparison result;
when the indoor environment temperature acquired in real time is lower than the temperature set by the user, selecting to enter a rapid heating mode; such as: the real-time collected indoor environment temperature is 16 ℃, the user set temperature is 30 ℃, and after comparison, the real-time collected indoor environment temperature is less than the user set temperature, and the rapid heating mode is entered.
That is, the step S220 specifically includes the following steps:
step S221, comparing the indoor environment temperature with the temperature set by the user;
step S222, when the indoor environment temperature is lower than the user set temperature, selecting to enter the fast heating mode.
And step S230, when entering the rapid heating mode, comparing the temperature in the heat exchanger tube with the preset heating target tube temperature, and controlling the frequency of the compressor according to the comparison result to perform rapid heating.
In this embodiment, when entering the fast heating mode, the control principle is similar to that in the first embodiment, except that:
the control mode of the rapid heating mode is as follows:
if T2 is less than T2htgt, the F target frequency = F current frequency +2 Hz;
if T2 > (T2htgt +1), then F target frequency = F current frequency-2 Hz;
if T2htgt is less than or equal to T2 (T2htgt +1), the F target frequency = F current frequency;
wherein T2 represents the temperature in the heat exchanger pipe collected in real time, T2htgt represents the preset heating target pipe temperature, F target frequency represents the operation frequency after the compressor is adjusted, and F current frequency represents the current operation frequency of the compressor.
The rapid heating mode is described below by way of specific examples:
as shown in fig. 4, when the inverter air conditioner is started to perform heating, it is first determined whether to enter a heating mode for the first time, and if so, the inverter air conditioner is operated for 2 minutes; after the variable frequency air conditioner runs for 2 minutes, judging whether Tn is less than Ts-1 (Tn represents the indoor environment temperature, and Ts represents the user set temperature); and when Tn is less than Ts-1, controlling the compressor to perform a quick heating mode.
When the rapid heating is carried out, if T2 < T2htgt is detected, the frequency of the compressor is controlled as follows: f target frequency = F current frequency +2 Hz; if T2 > (T2htgt +1) is detected, the frequency of the compressor is controlled to be: f target frequency = F current frequency-2 Hz; if the T2htgt is detected to be less than or equal to T2 (T2htgt +1), controlling the frequency of the compressor to be: f target frequency = F current frequency; and when the Tn is detected to be more than or equal to Ts-1, controlling the quick heating mode to end.
Namely, the step of entering the rapid heating mode in the heating mode comprises the following steps:
step S521, starting a heating mode;
step S522, judging whether the heating is firstly carried out or not; if yes, go to step S523; if not, go to step S527;
step S523, judging whether the running time is more than or equal to 2 minutes; if so, go to step S524; if not, go to step S522;
step S524, judging whether Tn is less than Ts-1; if yes, go to step S525; if not, go to step S527;
step S525, performing rapid heating control: if T2 is less than T2htgt, the F target frequency = F current frequency +2 Hz; if T2 > (T2htgt +1), then F target frequency = F current frequency-2 Hz; if T2htgt is less than or equal to T2 (T2htgt +1), the F target frequency = F current frequency;
step S526, judging whether Tn is more than or equal to Ts-1; if yes, go to step S527; if not, go to step S525;
step S527, the rapid heating is ended.
In summary, in the present embodiment, by setting the heating target temperature in the memory of the inverter air conditioner in advance, when it is detected that the indoor environment temperature is lower than the temperature set by the user, the fast heating mode is entered; in the rapid heating mode, when the temperature in the heat exchanger pipe collected in real time is lower than the heating target temperature, the temperature in the heat exchanger pipe reaches the heating target temperature by improving the frequency of the compressor, the heat exchange capacity of the indoor heat exchanger is exerted to the maximum, the room temperature quickly reaches the temperature required by a user, and the rapid heating effect is realized.
EXAMPLE III
As shown in fig. 5, the inverter air conditioner according to the preferred embodiment of the present invention includes an indoor unit 20 and an outdoor unit 10, wherein the indoor unit 20 is provided with a heat exchanger 21, a processor 22 connected to the heat exchanger, and a memory 23 connected to the processor;
a tube temperature sensor for detecting the temperature in the tube of the heat exchanger 21, an indoor environment sensor for detecting the indoor environment temperature and an outdoor environment sensor for detecting the outdoor environment temperature are arranged in a tube disc of the heat exchanger 21; the pipe temperature sensor, the indoor environment sensor and the outdoor environment sensor are respectively connected with the processor 22;
the memory 23 stores a control program for quick cooling and a control program for quick heating;
wherein, the control program of the rapid cooling is used for implementing the control method of the rapid cooling in the first embodiment when being executed by the processor 22; as described in embodiment one;
the control program for rapid heating is used for implementing the control method for rapid heating in the second embodiment when being executed by the processor 22; the details are as described in example two.
In summary, the present invention provides a control method for fast refrigeration or fast heating and a variable frequency air conditioner, wherein a target tube temperature is set in a memory in advance, and in a refrigeration mode, if a temperature in a heat exchanger tube collected in real time is higher than the refrigeration target tube temperature, the fast refrigeration mode is entered, and the operating frequency of a compressor is increased; in the heating mode, if the temperature in the heat exchanger pipe collected in real time is lower than the temperature of a refrigerating target pipe, the rapid heating mode is started, and the working frequency of the compressor is improved; the frequency of the compressor is adjusted to enable the temperature in the heat exchanger tube to quickly reach the target tube temperature, so that the inverter air conditioner outputs the maximum refrigerating capacity or heating capacity to achieve the effect of quick refrigeration or quick heating.
Of course, it will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program instructing relevant hardware (such as a processor, a controller, etc.), and the program may be stored in a computer readable storage medium, and when executed, the program may include the processes of the above method embodiments. The storage medium may be a memory, a magnetic disk, an optical disk, etc.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (15)
1. A control method for rapid refrigeration is characterized by comprising the following steps:
when entering a refrigeration mode, acquiring the outdoor environment temperature, the indoor environment temperature and the temperature in a heat exchanger tube in real time, and acquiring the temperature set by a user;
comparing the indoor environment temperature with the temperature set by the user, and selecting to enter a rapid refrigeration mode according to a comparison result;
and when the rapid refrigeration mode is entered, comparing the temperature in the heat exchanger tube with the temperature of a preset refrigeration target tube, and controlling the frequency of the compressor according to the comparison result to perform rapid refrigeration.
2. The control method for rapid cooling according to claim 1, wherein the method further comprises the following steps before acquiring the outdoor ambient temperature, the indoor ambient temperature and the temperature in the heat exchanger tube in real time and obtaining the temperature set by the user when entering the cooling mode:
presetting a refrigeration target pipe temperature, wherein the refrigeration target pipe temperature is obtained according to the indoor environment temperature and the outdoor environment temperature.
3. The control method for rapid cooling according to claim 1, wherein the comparing the indoor ambient temperature with the user-set temperature and selecting to enter the rapid cooling mode according to the comparison result specifically comprises the following steps:
comparing the indoor environment temperature with the user set temperature;
and when the indoor environment temperature is higher than the temperature set by the user, selecting to enter the rapid cooling mode.
4. The control method of rapid cooling according to claim 1, wherein when entering the rapid cooling mode, comparing the temperature in the heat exchanger tube with a preset target tube temperature, and controlling the compressor frequency according to the comparison result, the rapid cooling specifically comprises the following steps:
when the rapid refrigeration mode is entered, acquiring the preset refrigeration target pipe temperature according to the indoor environment temperature and the outdoor environment temperature;
comparing the temperature in the heat exchanger tube with the temperature of the preset refrigeration target tube;
and when the temperature in the heat exchanger pipe is higher than the preset refrigeration target pipe temperature, controlling the compressor to increase the current frequency by a first preset frequency.
5. The control method for rapid cooling according to claim 4, wherein the step of controlling the compressor to increase the current frequency by a first preset frequency when the temperature in the heat exchanger tube is higher than the preset target cooling tube temperature comprises the following steps:
and when the indoor environment temperature is lower than the temperature set by the user, ending the quick cooling mode.
6. The control method for rapid cooling according to claim 3, wherein said comparing the indoor ambient temperature with the user-set temperature further comprises the following steps:
judging whether the refrigeration mode is entered for the first time;
and when the refrigeration mode is entered for the first time, controlling the compressor to operate for a first preset time.
7. The method for controlling rapid cooling according to claim 1, wherein when entering the rapid cooling mode, comparing the temperature in the heat exchanger tube with a preset target tube temperature, and controlling the compressor frequency according to the comparison result, and after performing rapid cooling, further comprising the steps of:
and setting an adjusting period of the compressor, and if the indoor environment temperature is higher than the set temperature of the user in the adjusting period, entering the rapid refrigeration mode.
8. A control method for rapid heating is characterized by comprising the following steps:
when the heating mode is entered, acquiring the outdoor environment temperature, the indoor environment temperature and the temperature in a heat exchanger tube in real time, and acquiring the temperature set by a user;
comparing the indoor environment temperature with the temperature set by the user, and selecting to enter a rapid heating mode according to a comparison result;
and when the heat exchanger enters the rapid heating mode, comparing the temperature in the heat exchanger tube with the preset heating target tube temperature, and controlling the frequency of the compressor according to the comparison result to perform rapid heating.
9. The control method for rapid heating according to claim 8, wherein the method further comprises the following steps before acquiring the outdoor ambient temperature, the indoor ambient temperature and the temperature in the heat exchanger tube in real time and obtaining the temperature set by the user when entering the heating mode:
presetting a heating target pipe temperature, wherein the heating target pipe temperature is obtained in advance according to the indoor environment temperature and the outdoor environment temperature.
10. The control method of rapid heating according to claim 8, wherein the comparing the indoor ambient temperature with the user-set temperature and selecting to enter the rapid heating mode according to the comparison result specifically includes the following steps:
comparing the indoor environment temperature with the user set temperature;
and when the indoor environment temperature is lower than the temperature set by the user, selecting to enter the rapid heating mode.
11. The control method of rapid heating according to claim 8, wherein when entering the rapid heating mode, comparing the temperature in the heat exchanger tube with a preset target tube temperature, and controlling the frequency of the compressor according to the comparison result, the method for performing rapid heating specifically comprises the following steps:
when entering the rapid heating mode, acquiring the preset heating target pipe temperature according to the indoor environment temperature and the outdoor environment temperature;
comparing the temperature in the heat exchanger tube with the preset heating target tube temperature;
and when the temperature in the heat exchanger pipe is lower than the preset heating target pipe temperature, controlling the compressor to increase the current frequency by a second preset frequency.
12. The control method for rapid heating according to claim 11, wherein the step of controlling the compressor to increase the current frequency by a second preset frequency when the temperature in the heat exchanger tube is lower than the preset target heating tube temperature comprises:
and when the indoor environment temperature is greater than the user set temperature, ending the rapid heating mode.
13. The control method of rapid heating according to claim 10, wherein the comparing the indoor ambient temperature with the user-set temperature further comprises the following steps:
judging whether the heating mode is entered for the first time;
and when the heating mode is initially entered, controlling the compressor to operate for a second preset time.
14. The control method of rapid heating according to claim 8, wherein when entering the rapid heating mode, comparing the temperature in the heat exchanger tube with a preset target tube temperature for heating, and controlling the frequency of the compressor according to the comparison result, and after performing rapid heating, further comprising the following steps:
and setting an adjusting period of the compressor, and if the indoor environment temperature is lower than the set temperature of the user in the adjusting period, entering the rapid heating mode.
15. The variable frequency air conditioner is characterized by comprising an indoor unit and an outdoor unit, wherein a heat exchanger, a processor connected with the heat exchanger and a memory connected with the processor are arranged in the indoor unit;
a tube temperature sensor for detecting the temperature in the heat exchanger tube, an indoor environment sensor for detecting the indoor environment temperature and an outdoor environment sensor for detecting the outdoor environment temperature are arranged in a tube disc of the heat exchanger; the pipe temperature sensor, the indoor environment sensor and the outdoor environment sensor are respectively connected with the processor;
the memory stores a control program for rapid cooling for implementing the control method for rapid cooling according to any one of claims 1 to 7 when executed by the processor, and a control program for rapid heating for implementing the control method for rapid heating according to any one of claims 8 to 14 when executed by the processor.
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