CN110726227A - Defrosting control method, device and system for fresh air fan system - Google Patents
Defrosting control method, device and system for fresh air fan system Download PDFInfo
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- CN110726227A CN110726227A CN201911033431.7A CN201911033431A CN110726227A CN 110726227 A CN110726227 A CN 110726227A CN 201911033431 A CN201911033431 A CN 201911033431A CN 110726227 A CN110726227 A CN 110726227A
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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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Abstract
The application discloses a defrosting control method, device and system of a fresh air fan system. The new air blower system comprises an exhaust heat exchanger, a compressor, an indoor air supply blower and an outdoor exhaust blower, and the method comprises the following steps: under the heating mode of a fresh air fan system, when detecting that an exhaust heat exchanger meets defrosting conditions, acquiring indoor environment temperature; determining that an indoor ambient temperature is greater than or equal to a first temperature threshold; and controlling the compressor to enter a shutdown mode, closing the indoor blower, and controlling the outdoor exhaust fan to operate at a preset high wind gear so as to defrost the exhaust heat exchanger through the indoor environment temperature. According to the method, when the indoor environment temperature is determined to be greater than or equal to the first temperature threshold value, the exhaust heat exchanger can be defrosted through the indoor environment temperature, the running time of the compressor is reduced, the effect of saving energy consumption can be achieved, meanwhile, the running mode switching of the compressor is reduced, and the service lives of the compressor and the four-way valve are prolonged.
Description
Technical Field
The present application relates to the field of defrosting technologies, and in particular, to a defrosting control method, apparatus, system, and computer-readable storage medium for a new fan system.
Background
When the fresh air fan system operates in a heating mode, the temperature of the exhaust heat exchanger is lower than the outdoor temperature, the fresh air fan system can frost after operating for a period of time, and the heating effect can be influenced after the frost is formed, so that the defrosting is needed.
In the correlation technique, the new fan system adopts the operation refrigeration mode to defrost, makes the position temperature that frosts rise to reach the purpose of defrosting, but the new fan system often heats refrigeration and switches, leads to the life of cross valve, compressor to shorten, has reduced the stability of new fan system.
Disclosure of Invention
The present application aims to solve at least one of the technical problems in the related art to some extent.
Therefore, the first objective of the present application is to provide a defrosting control method for a new fan system, which reduces the operation time of the compressor, achieves the effect of saving energy consumption, reduces the operation mode switching of the compressor, and prolongs the service life of the compressor and the four-way valve.
A second objective of the present application is to provide a defrosting control device for a new fan system.
A third object of the present application is to provide a new fan system.
A fourth object of the present application is to propose a computer readable storage medium.
In order to achieve the above object, in a defrosting control method of a fresh air fan system provided in an embodiment of the first aspect of the present application, the fresh air fan system includes an exhaust heat exchanger, a compressor, an indoor air supply fan, and an outdoor exhaust fan, and the method includes:
under the heating mode of the fresh air fan system, when the exhaust heat exchanger is detected to meet the defrosting condition, the indoor environment temperature is obtained;
determining that the indoor ambient temperature is greater than or equal to a first temperature threshold;
and controlling the compressor to enter a shutdown mode, closing the indoor blower, and controlling the outdoor exhaust fan to operate at a preset high wind gear so as to defrost the exhaust heat exchanger through the indoor environment temperature.
According to the defrosting control method of the fresh air fan system, under the heating mode of the fresh air fan system, when the fact that the exhaust heat exchanger meets the defrosting condition is detected, the indoor environment temperature is obtained, then it is determined that the indoor environment temperature is larger than or equal to the first temperature threshold value, then the compressor is controlled to enter the shutdown mode, the indoor air feeder is turned off, and the outdoor exhaust fan is controlled to operate at the preset high-wind gear position, so that the exhaust heat exchanger is defrosted through the indoor environment temperature. According to the method, when the indoor environment temperature is determined to be greater than or equal to the first temperature threshold value, the exhaust heat exchanger can be defrosted through the indoor environment temperature, the running time of the compressor is reduced, the effect of saving energy consumption can be achieved, meanwhile, the running mode switching of the compressor is reduced, and the service lives of the compressor and the four-way valve are prolonged.
According to an embodiment of the present application, the defrosting control method of the fresh air fan system further includes: determining that the indoor ambient temperature is less than the first temperature threshold; controlling the fresh air fan system to refrigerate and controlling the compressor to operate at a defrosting frequency; and closing the outdoor exhaust fan and controlling the indoor air supply fan to operate at a preset low wind gear.
According to an embodiment of the present application, the defrosting control method of the fresh air fan system further includes: timing is started when defrosting is started, and when the timing time reaches a first defrosting time threshold value, the fresh air fan system is controlled to finish defrosting; or if the duration that the outlet temperature of the exhaust heat exchanger is greater than the second temperature threshold reaches the first duration, controlling the fresh air fan system to finish defrosting.
According to an embodiment of the present application, the defrosting control method of the fresh air fan system further includes: timing is started when defrosting is started, and when the timing time reaches a second defrosting time threshold value, the fresh air fan system is controlled to finish defrosting; or if the duration that the outlet temperature of the exhaust heat exchanger is greater than the second temperature threshold reaches a second duration, controlling the new fan system to finish defrosting; or determining that the outlet temperature of the exhaust heat exchanger is greater than a third temperature threshold value, and controlling the fresh air fan system to finish defrosting, wherein the third temperature threshold value is greater than the second temperature threshold value.
In order to achieve the above object, an embodiment of the second aspect of the present application provides a defrosting control device for a fresh air blower system, where the fresh air blower system includes an air exhaust heat exchanger, a compressor, an indoor air supply blower, and an outdoor air exhaust blower, and the device includes:
the acquisition module is used for acquiring the indoor environment temperature when the exhaust heat exchanger is detected to meet the defrosting condition in the heating mode of the fresh air fan system;
a first determination module to determine that the indoor ambient temperature is greater than or equal to a first temperature threshold;
and the first processing module is used for controlling the compressor to enter a shutdown mode, closing the indoor blower and controlling the outdoor exhaust fan to operate at a preset high wind gear so as to defrost the exhaust heat exchanger through the indoor environment temperature.
According to the defrosting control device of the new fan system of the embodiment of the application, under the heating mode of the new fan system, when the fact that the exhaust heat exchanger meets the defrosting condition is detected, the indoor environment temperature is obtained, then the indoor environment temperature is determined to be larger than or equal to the first temperature threshold value, then the compressor is controlled to enter the shutdown mode, the indoor air feeder is closed, the outdoor exhaust fan is controlled to operate in the preset high-wind gear position, and the exhaust heat exchanger is defrosted through the indoor environment temperature. Therefore, when the indoor environment temperature is determined to be larger than or equal to the first temperature threshold value, the air exhaust heat exchanger can be defrosted through the indoor environment temperature, the running time of the compressor is reduced, the effect of saving energy consumption can be achieved, meanwhile, the running mode switching of the compressor is reduced, and the service lives of the compressor and the four-way valve are prolonged.
According to an embodiment of the present application, the defrost control apparatus of the fresh air system further comprises: a second determination module to determine that the indoor ambient temperature is less than the first temperature threshold; the second processing module is used for controlling the fresh air fan system to refrigerate and controlling the compressor to operate at a defrosting frequency; and closing the outdoor exhaust fan and controlling the indoor air supply fan to operate at a preset low wind gear.
According to an embodiment of the present application, the defrost control apparatus of the fresh air system further comprises: the third processing module is used for starting timing when the defrosting action is started, and controlling the fresh air fan system to finish defrosting when the timing time reaches a first defrosting time threshold value; or if the duration that the outlet temperature of the exhaust heat exchanger is greater than the second temperature threshold reaches the first duration, controlling the fresh air fan system to finish defrosting.
According to an embodiment of the present application, the defrost control apparatus of the fresh air system further comprises: the fourth processing module is used for starting timing when the defrosting action is started, and controlling the fresh air fan system to finish defrosting when the timing time reaches a second defrosting time threshold value; or if the duration that the outlet temperature of the exhaust heat exchanger is greater than the second temperature threshold reaches a second duration, controlling the new fan system to finish defrosting; or determining that the outlet temperature of the exhaust heat exchanger is greater than a third temperature threshold value, and controlling the fresh air fan system to finish defrosting, wherein the third temperature threshold value is greater than the second temperature threshold value.
In order to achieve the above object, a new blower system provided in an embodiment of the third aspect of the present application includes an exhaust heat exchanger, a compressor, an indoor air supply blower, an outdoor exhaust blower, a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements the defrosting control method of the new blower system according to the first aspect of the present application when executing the program.
To achieve the above object, a computer-readable storage medium is provided in an embodiment of a fourth aspect of the present application, on which a computer program is stored, wherein the computer program is configured to implement a defrosting control method of a new fan system of the first aspect of the present application when the computer program is executed by a processor.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flow chart of a defrost control method for a new fan system according to one embodiment of the present application.
Fig. 2 is a schematic illustration of a compressor entering a shutdown mode for defrosting a discharge air heat exchanger by indoor ambient temperature, according to an embodiment of the present application.
Fig. 3 is a schematic diagram of the compressor defrost mode enabled, compressor refrigeration mode with the discharge air heat exchanger defrosted according to one embodiment of the present application.
Fig. 4 is a flow chart of a defrost control method for a new fan system according to an embodiment of the present application.
Fig. 5 is a flow chart of a defrost control method for a new fan system according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of a defrost control device of a new fan system according to one embodiment of the present application.
Fig. 7 is a schematic structural diagram of a defrost control device of a new fan system according to one embodiment of the present application.
Fig. 8 is a schematic structural diagram of a defrost control device of a new fan system according to one embodiment of the present application.
Fig. 9 is a schematic structural diagram of a defrost control device of a new fan system according to one embodiment of the present application.
Fig. 10 is a schematic structural diagram of a new fan system according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
In the correlation technique, the new fan system adopts the operation refrigeration mode to defrost, makes the position temperature that frosts rise to reach the purpose of defrosting, but the new fan system often heats refrigeration and switches, leads to the life of cross valve, compressor to shorten, has reduced the stability of new fan system.
In order to solve the technical problems in the prior art, the application provides a defrosting control method of a fresh air fan system, and the method acquires the indoor environment temperature when detecting that an exhaust heat exchanger meets the defrosting condition in the heating mode of the fresh air fan system; determining that an indoor ambient temperature is greater than or equal to a first temperature threshold; and controlling the compressor to enter a shutdown mode, closing the indoor blower, and controlling the outdoor exhaust fan to operate at a preset high wind gear so as to defrost the exhaust heat exchanger through the indoor environment temperature.
Fig. 1 is a flow chart of a defrost control method for a new fan system according to one embodiment of the present application. It should be noted that the defrosting control method of the new fan system in the embodiment of the present application can be applied to the defrosting control device of the new fan system in the embodiment of the present application. The defrosting control device of the fresh air fan system can be configured in the fresh air fan system, wherein in the embodiment of the application, the fresh air fan system comprises an exhaust heat exchanger, a compressor, an indoor air supply fan and an outdoor exhaust fan.
As shown in fig. 1, the defrosting control method of the new fan system may include:
s110, under the heating mode of the fresh air fan system, when the fact that the exhaust heat exchanger meets the defrosting condition is detected, the indoor environment temperature is obtained.
For example, in a heating mode of the fresh air fan system, whether the temperature of the exhaust heat exchanger is lower than the outdoor temperature can be detected, wherein the defrosting condition is met when the temperature is lower than the outdoor temperature, and when the defrosting condition is met, the indoor environment temperature can be obtained.
In an embodiment of the application, the indoor ambient temperature is obtained, and whether the indoor ambient temperature is greater than or equal to a first temperature threshold value or not may be determined.
And S120, determining that the indoor environment temperature is greater than or equal to a first temperature threshold value.
And S130, controlling the compressor to enter a shutdown mode, closing the indoor blower, and controlling the outdoor exhaust fan to operate at a preset high wind gear so as to defrost the exhaust heat exchanger through the indoor environment temperature.
That is, when it is determined that the indoor ambient temperature is greater than or equal to the first temperature threshold, the defrosting mode without starting the compressor is adopted, the indoor blower is turned off, the outdoor exhaust blower is turned on, and the outdoor exhaust blower is controlled to operate at a high speed, so that the indoor air with higher temperature passes through the exhaust air duct, and the outlet temperature of the exhaust heat exchanger is gradually increased, thereby achieving the defrosting effect.
In the defrosting process of the air exhaust heat exchanger by combining indoor higher temperature without starting the compressor, the states of the four-way valve, the compressor, the outdoor air exhaust fan, the electronic expansion valve and the indoor air supply fan in the fresh air fan system are indicated in the defrosting process, as shown in fig. 2.
In order to improve the intelligence in the new fan system, the new fan system can automatically quit defrosting in combination with defrosting conditions, and the running mode before the new fan system is recovered, in one embodiment of the application, a defrosting mode without starting a compressor is adopted, and in the process of defrosting the exhaust heat exchanger in combination with indoor higher temperature, whether the new fan system meets a first quit defrosting condition can be detected, and when the new fan system is detected to meet the first quit defrosting condition, the new fan system can be controlled to finish defrosting.
The first defrosting quitting condition is a condition that the preset fresh air fan system finishes defrosting when the fresh air system adopts a defrosting mode without starting a compressor.
The first exit defrosting condition may include, but is not limited to, starting timing when a defrosting action is started, controlling the fresh air fan system to end defrosting when the timing time reaches a first defrosting time threshold, and if the duration of the outlet temperature of the exhaust air heat exchanger being greater than a second temperature threshold reaches a first duration, and the like.
That is to say, in the embodiment of the present application, timing is started when a defrosting operation is started, and when the timing time reaches a first defrosting time threshold, the fresh air fan system is controlled to finish defrosting; or if the duration of the outlet temperature of the exhaust heat exchanger being greater than the second temperature threshold reaches the first duration, controlling the fresh air fan system to finish defrosting.
In the embodiment of the application, when it is determined that the indoor environment temperature is less than the first temperature threshold, the fresh air fan system can be controlled to refrigerate, the compressor is controlled to operate at the defrosting frequency, the outdoor exhaust fan is turned off, and the indoor air supply fan is controlled to operate at the preset low wind gear position to defrost.
It should be noted that the defrosting frequency is lower than the real-time running frequency of the compressor in the heating mode, the four-way valve is reversed, and the opening of the electronic expansion valve is controlled to be a preset opening.
That is, when it is determined that the indoor environment temperature is less than the first temperature threshold, the compressor defrosting mode is started, the indoor air supply fan is started, the outdoor air exhaust fan is closed, and hot refrigerants flow through the air exhaust side radiating pipe through the reversing of the compressor and the four-way valve, so that the temperature of the air exhaust side radiator is increased, and the defrosting effect is achieved.
In the process of defrosting the exhaust heat exchanger by starting the compressor defrosting mode in the fresh air system, the states of the four-way valve, the compressor, the outdoor exhaust fan, the electronic expansion valve and the indoor air supply fan in the fresh air system in the defrosting process are indicated, as shown in fig. 3. As can be seen from fig. 3, when the compressor is started to defrost, the hot refrigerant flows through the heat dissipation pipe on the exhaust side by reversing the compressor and the four-way valve, so that the temperature of the heat dissipation pipe on the exhaust side is increased, and the defrosting purpose is achieved.
It should be noted that, the connection relationship and the working principle between the four-way valve, the compressor, the outdoor exhaust fan, the electronic expansion valve and the indoor air supply fan in the fresh air system of this embodiment are the prior art, and are well known to those skilled in the art, and are not described herein again.
According to the defrosting control method of the fresh air fan system, under the heating mode of the fresh air fan system, when the fact that the exhaust heat exchanger meets the defrosting condition is detected, the indoor environment temperature is obtained, then it is determined that the indoor environment temperature is larger than or equal to the first temperature threshold value, then the compressor is controlled to enter the shutdown mode, the indoor air feeder is turned off, and the outdoor exhaust fan is controlled to operate at the preset high-wind gear position, so that the exhaust heat exchanger is defrosted through the indoor environment temperature. According to the method, when the indoor environment temperature is determined to be greater than or equal to the first temperature threshold value, the exhaust heat exchanger can be defrosted through the indoor environment temperature, the running time of the compressor is reduced, the effect of saving energy consumption can be achieved, meanwhile, the running mode switching of the compressor is reduced, and the service lives of the compressor and the four-way valve are prolonged.
Fig. 4 is a flow chart of a defrost control method for a new fan system according to an embodiment of the present application. Specifically, as shown in fig. 4, the defrosting control method of the new fan system may include:
s410, under the heating mode of the fresh air fan system, when the fact that the exhaust heat exchanger meets the defrosting condition is detected, the indoor environment temperature is obtained.
S420, judging whether the indoor environment temperature is greater than or equal to a first temperature threshold value.
And S430, if so, controlling the compressor to enter a shutdown mode, closing the indoor blower, and controlling the outdoor exhaust fan to operate at a preset high wind gear so as to defrost the exhaust heat exchanger through the indoor environment temperature.
That is, when it is determined that the indoor ambient temperature is greater than or equal to the first temperature threshold, the defrosting mode without turning on the compressor is adopted, the indoor blower is turned off, the outdoor exhaust blower is turned on, and the outdoor exhaust blower is controlled to operate at a high speed, so that the indoor air with higher temperature passes through the exhaust air duct, and the outlet temperature of the exhaust heat exchanger is gradually increased to achieve the defrosting effect, and the specific implementation process can be as shown in fig. 2.
S440, whether the new fan system meets the first defrosting quitting condition is detected, and when the new fan system meets the first defrosting quitting condition is detected, the new fan system can be controlled to finish defrosting.
In order to improve the intelligence in the new fan system, the new fan system can automatically quit defrosting in combination with defrosting conditions, and the running mode before the new fan system is recovered, in one embodiment of the application, a defrosting mode without starting a compressor is adopted, and in the process of defrosting the exhaust heat exchanger in combination with indoor higher temperature, whether the new fan system meets a first quit defrosting condition can be detected, and when the new fan system is detected to meet the first quit defrosting condition, the new fan system can be controlled to finish defrosting.
The first defrosting quitting condition is a condition that the preset fresh air fan system finishes defrosting when the fresh air system adopts a defrosting mode without starting a compressor.
The first exit defrosting condition may include, but is not limited to, starting timing when a defrosting action is started, controlling the fresh air fan system to end defrosting when the timing time reaches a first defrosting time threshold, and if the duration of the outlet temperature of the exhaust air heat exchanger being greater than a second temperature threshold reaches a first duration, and the like.
S450, if not, controlling a fresh air fan system to refrigerate, and controlling a compressor to operate at a defrosting frequency; and closing the outdoor exhaust fan, and controlling the indoor air supply fan to operate at a preset low wind gear to defrost.
It should be noted that the defrosting frequency is lower than the real-time running frequency of the compressor in the heating mode, the four-way valve is reversed, and the opening of the electronic expansion valve is controlled to be a preset opening.
That is, when it is determined that the indoor ambient temperature is less than the first temperature threshold, the compressor defrosting mode is turned on, the indoor air supply fan is turned on, the outdoor air exhaust fan is turned off, and the hot refrigerant flows through the air exhaust side heat dissipation pipe by reversing the compressor and the four-way valve, so that the temperature of the air exhaust side heat dissipation pipe is raised, thereby achieving the defrosting effect, for example, the specific implementation process can be as shown in fig. 3.
And S460, detecting whether the new fan system meets the second defrosting quitting condition, and controlling the new fan system to finish defrosting when detecting that the new fan system meets the second defrosting quitting condition.
In an embodiment of the present application, in order to improve intelligence in the new blower system, so that the new blower system can automatically exit defrosting in combination with defrosting conditions, and recover the previous operation mode of the new blower system, in an embodiment of the present application, when the new blower system starts the compressor defrosting mode, whether the new blower system satisfies the second exit defrosting condition can be detected, and when it is detected that the new blower system satisfies the second exit defrosting condition, the new blower system can be controlled to finish defrosting.
And the second defrosting quitting condition is a condition that the preset fresh air fan system finishes defrosting when the fresh air system adopts a compressor defrosting starting mode.
The second defrosting exiting condition may include, but is not limited to, starting timing when a defrosting action is started, and controlling the fresh air fan system to finish defrosting when the timing time reaches a second defrosting time threshold; or if the duration that the outlet temperature of the exhaust heat exchanger is greater than the second temperature threshold reaches the second duration, controlling the fresh air fan system to finish defrosting; or determining that the outlet temperature of the exhaust heat exchanger is greater than a third temperature threshold value, and controlling the fresh air fan system to finish defrosting, wherein the third temperature threshold value is greater than the second temperature threshold value.
The first duration in this embodiment is greater than the second duration.
According to the defrosting control method of the fresh air fan system, under the heating mode of the fresh air fan system, when the fact that the exhaust heat exchanger meets defrosting conditions is detected, indoor environment temperature is obtained, whether the indoor environment temperature is larger than or equal to a first temperature threshold value or not is judged, then a defrosting mode can be selected, if yes, the compressor is controlled to enter a shutdown mode, the indoor air feeder is closed, the outdoor exhaust fan is controlled to run at a preset high-wind gear position, the exhaust heat exchanger is defrosted through the indoor environment temperature, timing is started when defrosting action is started, and when timing time reaches the first defrosting time threshold value, the fresh air fan system is controlled to finish defrosting; or if the duration that the outlet temperature of the exhaust heat exchanger is greater than the second temperature threshold reaches the first duration, controlling the fresh air fan system to finish defrosting;
if not, controlling the fresh air fan system to refrigerate, and controlling the compressor to operate at the defrosting frequency; closing the outdoor exhaust fan, controlling the indoor air supply fan to operate at a preset low wind gear, defrosting, starting timing when the defrosting action is started, and controlling the fresh air fan system to finish defrosting when the timing time reaches a second defrosting time threshold; or if the duration that the outlet temperature of the exhaust heat exchanger is greater than the second temperature threshold reaches the second duration, controlling the fresh air fan system to finish defrosting; or determining that the outlet temperature of the exhaust heat exchanger is greater than a third temperature threshold value, and controlling the fresh air fan system to finish defrosting, wherein the third temperature threshold value is greater than the second temperature threshold value. According to the method, when the indoor environment temperature is determined to be greater than or equal to the first temperature threshold value, the exhaust heat exchanger can be defrosted through the indoor environment temperature, the running time of the compressor is reduced, the effect of saving energy consumption can be achieved, meanwhile, the running mode switching of the compressor is reduced, and the service lives of the compressor and the four-way valve are prolonged.
In order to facilitate those skilled in the art to understand the present application more easily, in the specific embodiment of the present application, for example, assuming that the temperature of the exhaust heat exchanger is T3, in the heating mode of the new air blower system, when it is detected that the exhaust heat exchanger satisfies the defrosting condition, the indoor ambient temperature can be obtained (S501), after the indoor temperature is obtained, whether the indoor ambient temperature is greater than or equal to the first temperature threshold can be determined (S502), and then the defrosting mode can be selected, when it is determined that the indoor ambient temperature is greater than or equal to the first temperature threshold, the compressor defrosting mode is not turned on, the indoor blower is turned off, the outdoor exhaust fan is turned on, and the outdoor exhaust fan is controlled to run at a high speed, so that the outlet temperature of the exhaust heat exchanger gradually rises, defrosting is performed (S503), timing is started when the defrosting action is started, whether the timing time reaches, if so, controlling the fresh air fan system to finish defrosting (S505), or judging whether the duration of the T3 greater than the second temperature threshold TB reaches 2 minutes (S506), and if so, controlling the fresh air fan system to finish defrosting (S505); when the indoor environment temperature is lower than a first temperature threshold value, a compressor defrosting mode is started, an indoor air supply fan is started, an outdoor air exhaust fan is closed, a hot refrigerant flows through an air exhaust side radiating pipe through the reversing of a compressor and a four-way valve, the temperature of the air exhaust side radiating pipe is increased, defrosting is carried out (S507), timing is started when defrosting is started, whether the timing time reaches 10 minutes or not is judged (S508), and if yes, a new fan system is controlled to finish defrosting (S505); or judging whether the duration of the time T3 greater than the second temperature threshold TB reaches 1 minute (S509), and if so, controlling the fresh air fan system to finish defrosting (S505); or, judging whether T3 is greater than a third temperature threshold TC (S510), and if so, controlling the fresh air fan system to finish defrosting (S505), wherein the third temperature threshold TC is greater than the second temperature threshold TB.
Corresponding to the defrosting control methods of the new fan systems provided in the above several embodiments, an embodiment of the present application further provides a defrosting control device of the new fan system, and since the defrosting control device of the new fan system provided in the embodiment of the present application corresponds to the defrosting control methods of the new fan systems provided in the above several embodiments, the implementation of the defrosting control method of the offline new fan system is also applicable to the defrosting control device of the new fan system provided in the embodiment, and will not be described in detail in the embodiment. Fig. 6 is a schematic structural diagram of a defrost control device of a new fan system according to one embodiment of the present application. In the embodiment of the application, the new air blower system comprises an exhaust heat exchanger, a compressor, an indoor air supply blower and an outdoor exhaust blower.
As shown in fig. 6, the defrosting control device 600 of the new fan system may include: an acquisition module 610, a first determination module 620, and a first processing module 630.
Specifically, the obtaining module 610 is configured to obtain an indoor environment temperature when detecting that the exhaust heat exchanger satisfies a defrosting condition in a heating mode of the fresh air fan system.
The first determination module 620 is used to determine that the indoor ambient temperature is greater than or equal to a first temperature threshold.
The first processing module 630 is used to control the compressor to enter a shutdown mode, and turn off the indoor blower, and control the outdoor exhaust fan to operate at a preset high wind gear to defrost the exhaust heat exchanger by the indoor ambient temperature.
In one embodiment of the present application, as shown in fig. 7, the defrosting control device of the new fan system further includes: the third processing module 640 is configured to start timing when the defrosting action is started, and control the fresh air fan system to finish defrosting when the timing time reaches a first defrosting time threshold; or if the duration of the outlet temperature of the exhaust heat exchanger being greater than the second temperature threshold reaches the first duration, controlling the fresh air fan system to finish defrosting.
Optionally, in an embodiment of the present application, as shown in fig. 8, the defrosting control device of the new fan system further includes: a second determining module 650 and a second processing module 660, wherein the second determining module 650 is configured to determine that the indoor ambient temperature is less than the first temperature threshold; the second processing module 660 is used for controlling the fresh air fan system to refrigerate and controlling the compressor to operate at a defrosting frequency; and closing the outdoor exhaust fan and controlling the indoor air supply fan to operate at a preset low wind gear.
In one embodiment of the present application, as shown in fig. 9, the defrosting control device of the new fan system further includes: a fourth processing module 670, wherein the fourth processing module 670 is configured to start timing when the defrosting action is started, and control the fresh air blower system to finish defrosting when the timing time reaches a second defrosting time threshold; or if the duration that the outlet temperature of the exhaust heat exchanger is greater than the second temperature threshold reaches the second duration, controlling the fresh air fan system to finish defrosting; or determining that the outlet temperature of the exhaust heat exchanger is greater than a third temperature threshold value, and controlling the fresh air fan system to finish defrosting, wherein the third temperature threshold value is greater than the second temperature threshold value.
In order to realize the embodiment, the application also provides a new fan system.
Fig. 10 is a schematic structural diagram of a new fan system according to an embodiment of the present application. As shown in fig. 10, the fresh air blower system 1000 includes an exhaust heat exchanger 1010, a compressor 1020, an indoor blower fan 1030, an outdoor exhaust blower fan 1040, a memory 1050, a processor 1060, and a computer program 1070 stored in the memory 1050 and operable on the processor 1060, wherein the processor 1060 executes the program to implement the defrosting control method of the fresh air blower system according to any one of the above embodiments.
In order to achieve the above embodiments, the present application further proposes a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the defrosting control method of the new fan system described in any one of the above embodiments of the present application.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means 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 application. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
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 the scope of the preferred embodiments of the present application includes other implementations 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 application.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present application 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 application 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. Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. A defrosting control method of a fresh air fan system is characterized in that the fresh air fan system comprises an exhaust heat exchanger, a compressor, an indoor air supply fan and an outdoor exhaust fan, and the method comprises the following steps:
under the heating mode of the fresh air fan system, when the exhaust heat exchanger is detected to meet the defrosting condition, the indoor environment temperature is obtained;
determining that the indoor ambient temperature is greater than or equal to a first temperature threshold;
and controlling the compressor to enter a shutdown mode, closing the indoor blower, and controlling the outdoor exhaust fan to operate at a preset high wind gear so as to defrost the exhaust heat exchanger through the indoor environment temperature.
2. The method of claim 1, further comprising:
determining that the indoor ambient temperature is less than the first temperature threshold;
controlling the fresh air fan system to refrigerate and controlling the compressor to operate at a defrosting frequency; and closing the outdoor exhaust fan and controlling the indoor air supply fan to operate at a preset low wind gear.
3. The method of claim 1, further comprising:
timing is started when defrosting is started, and when the timing time reaches a first defrosting time threshold value, the fresh air fan system is controlled to finish defrosting; alternatively, the first and second electrodes may be,
and if the duration of the outlet temperature of the exhaust heat exchanger being greater than the second temperature threshold reaches a first duration, controlling the fresh air fan system to finish defrosting.
4. The method of claim 2, further comprising:
timing is started when defrosting is started, and when the timing time reaches a second defrosting time threshold value, the fresh air fan system is controlled to finish defrosting; alternatively, the first and second electrodes may be,
if the duration that the outlet temperature of the exhaust heat exchanger is greater than a second temperature threshold reaches a second duration, controlling the new fan system to finish defrosting; alternatively, the first and second electrodes may be,
and determining that the outlet temperature of the exhaust heat exchanger is greater than a third temperature threshold value, and controlling the fresh air fan system to finish defrosting, wherein the third temperature threshold value is greater than the second temperature threshold value.
5. The utility model provides a defrosting control device of new fan system which characterized in that, new fan system is including the heat exchanger of airing exhaust, compressor, indoor air supply fan, outdoor air exhaust fan, the device includes:
the acquisition module is used for acquiring the indoor environment temperature when the exhaust heat exchanger is detected to meet the defrosting condition in the heating mode of the fresh air fan system;
a first determination module to determine that the indoor ambient temperature is greater than or equal to a first temperature threshold;
and the first processing module is used for controlling the compressor to enter a shutdown mode, closing the indoor blower and controlling the outdoor exhaust fan to operate at a preset high wind gear so as to defrost the exhaust heat exchanger through the indoor environment temperature.
6. The apparatus of claim 5, further comprising:
a second determination module to determine that the indoor ambient temperature is less than the first temperature threshold;
the second processing module is used for controlling the fresh air fan system to refrigerate and controlling the compressor to operate at a defrosting frequency; and closing the outdoor exhaust fan and controlling the indoor air supply fan to operate at a preset low wind gear.
7. The apparatus of claim 5, further comprising:
the third processing module is used for starting timing when the defrosting action is started, and controlling the fresh air fan system to finish defrosting when the timing time reaches a first defrosting time threshold value; or if the duration that the outlet temperature of the exhaust heat exchanger is greater than the second temperature threshold reaches the first duration, controlling the fresh air fan system to finish defrosting.
8. The apparatus of claim 6, further comprising:
the fourth processing module is used for starting timing when the defrosting action is started, and controlling the fresh air fan system to finish defrosting when the timing time reaches a second defrosting time threshold value; or if the duration that the outlet temperature of the exhaust heat exchanger is greater than the second temperature threshold reaches a second duration, controlling the new fan system to finish defrosting; or determining that the outlet temperature of the exhaust heat exchanger is greater than a third temperature threshold value, and controlling the fresh air fan system to finish defrosting, wherein the third temperature threshold value is greater than the second temperature threshold value.
9. A new fan system comprising an exhaust heat exchanger, a compressor, an indoor air supply fan, an outdoor exhaust fan, a memory, a processor, and a computer program stored in the memory and operable on the processor, wherein the processor implements the defrost control method of the new fan system as recited in any one of claims 1-4 when executing the program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a defrost control method of a new fan system as claimed in any one of claims 1-4.
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| CN201911033431.7A CN110726227A (en) | 2019-10-28 | 2019-10-28 | Defrosting control method, device and system for fresh air fan system |
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