CN104596040A - Water pump control method and system of air conditioner cooling system and household central air conditioner - Google Patents
Water pump control method and system of air conditioner cooling system and household central air conditioner Download PDFInfo
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- CN104596040A CN104596040A CN201510058615.4A CN201510058615A CN104596040A CN 104596040 A CN104596040 A CN 104596040A CN 201510058615 A CN201510058615 A CN 201510058615A CN 104596040 A CN104596040 A CN 104596040A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—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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Abstract
The application provides a water pump control method and system of an air conditioner cooling system and a household central air conditioner. The control method and system are applied to the household central air conditioner which performs cooling by using water. The method and the system are characterized in that firstly inlet and outlet water temperature difference between a water inlet and a water outlet of the air conditioner cooling system is obtained; then the inlet and outlet water temperature difference is respectively compared with a preset inlet and outlet water temperature difference upper limit and a preset inlet and outlet water temperature difference lower limit; if the inlet and outlet water temperature difference is smaller than the inlet and outlet water temperature difference lower limit, the rotating speed of a water pump is reduced; if the inlet and outlet water temperature difference is greater than the inlet and outlet water temperature difference upper limit, the rotating speed of the water pump is increased; if the inlet and outlet water temperature difference is between the inlet and outlet water temperature difference lower limit and the inlet and outlet water temperature difference upper limit, the current rotating speed of the water pump is maintained. By adaptively adjusting the rotating speed of the water pump through a judgment result of the inlet and outlet water temperature difference, when the inlet and outlet water temperature difference is smaller than the preset inlet and outlet water temperature difference lower limit, the rotating speed of the water pump is reduced at proper time and thus the overall energy consumption of the central air conditioner system can be reduced.
Description
Technical field
The application relates to air-conditioning technical field, more particularly, relates to a kind of water pump control method of air conditioner cooling system, system and residential central air conditioning.
Background technology
In the water-cooling system of residential central air conditioning, the fixed water pump frequently of general employing drives cold cut water to circulate, keep full-load run state in running always, but during central air conditioner system actual motion, the water circulation amount of actual needs is different in the difference with operating mode, and therefore this method of operation of full-load run state that always keeps inevitably causes certain waste of energy.
Summary of the invention
In view of this, the application provides a kind of water pump control method of air conditioner cooling system, system and residential central air conditioning, for controlling for the water pump driving cooling water to circulate in the cooling system of residential central air conditioning, to reduce power consumption.
To achieve these goals, the existing scheme proposed is as follows:
A water pump control method for air conditioner cooling system, is applied to residential central air conditioning, comprises the steps:
Calculate the temperature difference of the water temperature of the water inlet of described air conditioner cooling system and the water temperature of delivery port, it can be used as the Inlet and outlet water temperature difference;
When the described Inlet and outlet water temperature difference is less than default Inlet and outlet water temperature difference lower limit, the pump rotary speed controlling the water pump of described air conditioner cooling system is reduced to next gear adjacent with described current gear from current gear;
When the described Inlet and outlet water temperature difference is greater than default Inlet and outlet water temperature difference higher limit, controls described pump rotary speed and be elevated to a upper gear adjacent with described current gear from described current gear;
Controlling described pump rotary speed when the described Inlet and outlet water temperature difference is greater than described Inlet and outlet water temperature difference lower limit and is less than described Inlet and outlet water temperature difference higher limit keeps described current gear constant;
Pump rotary speed corresponding to described current gear is greater than pump rotary speed corresponding to next gear described, and pump rotary speed corresponding to affiliated current gear is less than pump rotary speed corresponding to an above-mentioned upper gear.
Optionally, described when the described Inlet and outlet water temperature difference is less than default Inlet and outlet water temperature difference lower limit, the pump rotary speed controlling the water pump of described air conditioner cooling system is reduced to next gear adjacent with described current gear from current gear, comprising:
When the described Inlet and outlet water temperature difference is less than described Inlet and outlet water temperature difference lower limit, controls described pump rotary speed and be reduced to next gear described, until be reduced to the lowest gear in default all gears from described current gear.
Optionally, described when the described Inlet and outlet water temperature difference is greater than default Inlet and outlet water temperature difference higher limit, control described pump rotary speed and be elevated to a upper gear adjacent with described current gear from described current gear, comprising:
When the described Inlet and outlet water temperature difference is greater than described Inlet and outlet water temperature difference higher limit, control described pump rotary speed from described current gear be reduced to described a gear, until be reduced to the most high tap position in default all gears.
Optionally, also comprise:
When described central air conditioner system is operated in refrigeration mode, if the suction temperature of its compressor be less than default low pressure sensor temperature value and continue preset the first period time, control described pump rotary speed from described current gear be elevated to described a gear; Or,
Heat when described central air conditioner system is operated in/water heating pattern time, if the delivery temperature of described compressor be greater than default high pressure sensor temperature value and continue preset the second period constantly, control described pump rotary speed from described current gear be elevated to described a gear.
Optionally, also comprise:
When described central air-conditioning is in defrost process, or when there is anti-frost protection or high temperature protection, control described pump rotary speed and remain on most high tap position in default all gears.
A control system of water pump for air conditioner cooling system, is applied to residential central air conditioning, comprising:
Computing module, for the temperature difference of the water temperature of the water temperature and delivery port that calculate the water inlet of described air conditioner cooling system, it can be used as the Inlet and outlet water temperature difference;
First control module, during for being less than default Inlet and outlet water temperature difference lower limit when the described Inlet and outlet water temperature difference, the pump rotary speed controlling the water pump of described air conditioner cooling system is reduced to next gear adjacent with described current gear from current gear;
Second control module, during for being greater than default Inlet and outlet water temperature difference higher limit when the described Inlet and outlet water temperature difference, controlling described pump rotary speed and is elevated to a upper gear adjacent with described current gear from described current gear;
Controlling described pump rotary speed when the described Inlet and outlet water temperature difference is greater than described Inlet and outlet water temperature difference lower limit and is less than described Inlet and outlet water temperature difference higher limit keeps described current gear constant;
Pump rotary speed corresponding to described current gear is greater than pump rotary speed corresponding to next gear described, and pump rotary speed corresponding to affiliated current gear is less than pump rotary speed corresponding to an above-mentioned upper gear.
Optionally, described first control module is used for when the described Inlet and outlet water temperature difference is less than described Inlet and outlet water temperature difference lower limit, controls described pump rotary speed and is reduced to next gear described, until be reduced to the lowest gear in default all gears from described current gear.
Optionally, described second control module is used for when the described Inlet and outlet water temperature difference is greater than described Inlet and outlet water temperature difference higher limit, control described pump rotary speed from described current gear be reduced to described a gear, until be reduced to the most high tap position in default all gears.
Optionally, also comprise:
3rd control module, for when described central air conditioner system is operated in refrigeration mode, if the suction temperature of its compressor be less than default low pressure sensor temperature value and continue preset the first period time, control described pump rotary speed from described current gear be elevated to described a gear;
4th control module, for heating when described central air conditioner system is operated in/water heating pattern time, if the delivery temperature of described compressor be greater than default high pressure sensor temperature value and continue preset the second period constantly, control described pump rotary speed from described current gear be elevated to described a gear.
Optionally, also comprise:
5th control module, for being in defrost process when described central air-conditioning, or when there is anti-frost protection or high temperature protection, controlling described pump rotary speed and remaining on most high tap position in default all gears.
A kind of residential central air conditioning, is provided with control system of water pump as above.
As can be seen from technique scheme, this application provides the water pump control method of air conditioner cooling system in, system and residential central air conditioning, this control method, system are applied to and utilize water to carry out the residential central air conditioning cooled.First the method and system obtain the Inlet and outlet water temperature difference between the water inlet water temperature of air conditioner cooling system and delivery port; Again this Inlet and outlet water temperature difference is compared with the Inlet and outlet water temperature difference higher limit preset, Inlet and outlet water temperature difference lower limit respectively; If the Inlet and outlet water temperature difference is less than Inlet and outlet water temperature difference lower limit, then turn down the pump rotary speed of water pump; If the Inlet and outlet water temperature difference is higher than the higher limit of the Inlet and outlet water temperature difference, heighten the pump rotary speed of water pump; If the Inlet and outlet water temperature difference falls between, then keep current pump rotary speed.The water pump control method, system and the residential central air conditioning that there is provided due to the application utilize to carry out adaptability adjustment to the judged result of the Inlet and outlet water temperature difference to the pump rotary speed of water pump, suitably pump rotary speed is improved, to meet the needs cooled cooling water when the Inlet and outlet water temperature difference higher limit that Inlet and outlet water temperature difference high pressure is preset; Key is when the Inlet and outlet water temperature difference is less than default Inlet and outlet water temperature difference lower limit, in good time reduction pump rotary speed, the basis meeting central air conditioner system is saved the electric energy of water pump has been exported, thus can electric energy have been saved, and then the overall energy consumption of central air conditioner system can have been reduced.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The flow chart of the control system of water pump of a kind of residential central air conditioning that Fig. 1 provides for the embodiment of the present application;
The flow chart of the control system of water pump of a kind of residential central air conditioning that Fig. 2 provides for another embodiment of the application;
The schematic diagram of the control system of water pump of a kind of residential central air conditioning that Fig. 3 provides for the another embodiment of the application;
The schematic diagram of the control system of water pump of a kind of residential central air conditioning that Fig. 4 provides for the another embodiment of the application.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present application, be clearly and completely described the technical scheme in the embodiment of the present application, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
Embodiment one
The flow chart of the water pump control method of a kind of air conditioner cooling system that Fig. 1 provides for the embodiment of the present application.
As shown in Figure 1, the water pump control method that the present embodiment provides is applied to and utilizes water to carry out the residential central air conditioning cooled, and comprises the steps:
S101: the Inlet and outlet water temperature difference obtaining air conditioner cooling system.
The so-called Inlet and outlet water temperature difference refers to the difference between the water temperature of the water inlet of air conditioner cooling system and the water temperature of delivery port.Due to when freezing, the water temperature of water inlet will, lower than the water temperature of delivery port, when heating then on the contrary, therefore, when concrete operation, be that the absolute value of the difference of getting the water temperature of water inlet and the water temperature of delivery port is as this Inlet and outlet water temperature difference.
S102: pump rotary speed is controlled according to the Inlet and outlet water temperature difference.
First judge that the Inlet and outlet water temperature difference judges with the Inlet and outlet water temperature difference lower limit preset, Inlet and outlet water temperature difference higher limit respectively, control according to the pump rotary speed of different results to the water pump 100 of cooling system.
1) when the Inlet and outlet water temperature difference is less than this Inlet and outlet water temperature difference lower limit, the pump rotary speed of water pump 100 is turned down a gear from current gear, namely next gear is turned down from current gear, the pump rotary speed that the pump rotary speed that next gear is corresponding is more corresponding than current gear is corresponding lower, until pump rotary speed to be adjusted to the lowest gear of all gears of this pump rotary speed, namely with the minimum speed preset running, now no longer turn down.
The quantity of the gear of the pump rotary speed of the water pump 100 in the application can arrange multiple according to actual needs, as 10 gears, and is that the plurality of gear distributes corresponding control strategy by actual control system, the such as strategy such as frequency control, variable voltage speed control.
2) when the Inlet and outlet water temperature difference is less than this Inlet and outlet water temperature difference higher limit, the pump rotary speed of water pump 100 is heightened a gear from current gear, namely a upper gear is heightened from current gear, the pump rotary speed that the pump rotary speed that a upper gear is corresponding wants high pressure current gear corresponding.Until pump rotary speed to be adjusted to the most high tap position of all gears of this pump rotary speed, namely with the maximum speed preset running, now no longer continue to heighten.
3) if the Inlet and outlet water temperature difference is between this Inlet and outlet water temperature difference higher limit and Inlet and outlet water temperature difference lower limit, then keep pump rotary speed constant.
Above-mentioned 2) and 3) in, when entering maximum speed or minimum speed, also to detect the situation of the Inlet and outlet water temperature difference moment, and with the lower limit of Inlet and outlet water temperature difference higher limit, the Inlet and outlet water temperature difference, pump rotary speed be regulated respectively according to the Inlet and outlet water temperature difference.
As can be seen from technique scheme, this application provides the water pump control method of air conditioner cooling system in, this water pump control method is applied to and utilizes water to carry out the residential central air conditioning cooled.First the method obtains the Inlet and outlet water temperature difference between the water inlet water temperature of air conditioner cooling system and delivery port; Again this Inlet and outlet water temperature difference is compared with the Inlet and outlet water temperature difference higher limit preset, Inlet and outlet water temperature difference lower limit respectively; If the Inlet and outlet water temperature difference is less than Inlet and outlet water temperature difference lower limit, then turn down the pump rotary speed of water pump; If the Inlet and outlet water temperature difference is higher than the higher limit of the Inlet and outlet water temperature difference, heighten the pump rotary speed of water pump; If the Inlet and outlet water temperature difference falls between, then keep current pump rotary speed.The water pump control method provided due to the application utilizes to carry out adaptability adjustment to the judged result of the Inlet and outlet water temperature difference to the pump rotary speed of water pump, suitably pump rotary speed is improved, to meet the needs cooled cooling water when the Inlet and outlet water temperature difference higher limit that Inlet and outlet water temperature difference high pressure is preset; Key is when the Inlet and outlet water temperature difference is less than default Inlet and outlet water temperature difference lower limit, in good time reduction pump rotary speed, the basis meeting central air conditioner system is saved the electric energy of water pump has been exported, thus can electric energy have been saved, reduced the overall energy consumption of central air conditioner system.
Embodiment two
The flow chart of the water pump control method of a kind of air conditioner cooling system that Fig. 2 provides for another embodiment of the application.
As shown in Figure 2, the water pump control method that the present embodiment provides is the improvement done on the basis of a upper embodiment, comprises the steps:
S201: the Inlet and outlet water temperature difference obtaining air conditioner cooling system.
The so-called Inlet and outlet water temperature difference refers to the difference between the water temperature of the water inlet of air conditioner cooling system and the water temperature of delivery port.Due to when freezing, the water temperature of water inlet will, lower than the water temperature of delivery port, when heating then on the contrary, therefore, when concrete operation, be that the absolute value of the difference of getting the water temperature of water inlet and the water temperature of delivery port is as this Inlet and outlet water temperature difference.
S202: pump rotary speed is controlled according to the Inlet and outlet water temperature difference.
First judge that the Inlet and outlet water temperature difference judges with the Inlet and outlet water temperature difference lower limit preset, Inlet and outlet water temperature difference higher limit respectively, control according to the pump rotary speed of different results to the water pump 100 of cooling system.
1) when the Inlet and outlet water temperature difference is less than this Inlet and outlet water temperature difference lower limit, the pump rotary speed of water pump 100 is turned down a gear from current gear, namely next gear is turned down from current gear, the pump rotary speed that the pump rotary speed that next gear is corresponding is more corresponding than current gear is corresponding lower, until pump rotary speed to be adjusted to the lowest gear of all gears of this pump rotary speed, namely with the minimum speed preset running, now no longer turn down.
The quantity of the gear of the pump rotary speed of the water pump 100 in the application can arrange multiple according to actual needs, as 10 gears, and is that the plurality of gear distributes corresponding control strategy by actual control system, the such as strategy such as frequency control, variable voltage speed control.
2) when the Inlet and outlet water temperature difference is less than this Inlet and outlet water temperature difference higher limit, the pump rotary speed of water pump 100 is heightened a gear from current gear, namely a upper gear is heightened from current gear, the pump rotary speed that the pump rotary speed that a upper gear is corresponding wants high pressure current gear corresponding.Until pump rotary speed to be adjusted to the most high tap position of all gears of this pump rotary speed, namely with the maximum speed preset running, now no longer continue to heighten.
3) if the Inlet and outlet water temperature difference is between this Inlet and outlet water temperature difference higher limit and Inlet and outlet water temperature difference lower limit, then keep pump rotary speed constant.
Above-mentioned 2) and 3) in, when entering maximum speed or minimum speed, also to detect the situation of the Inlet and outlet water temperature difference moment, and with the lower limit of Inlet and outlet water temperature difference higher limit, the Inlet and outlet water temperature difference, pump rotary speed be regulated respectively according to the Inlet and outlet water temperature difference.
S203: the mode of operation according to central air conditioner system controls pump rotary speed.
This mode of operation comprises refrigeration mode and heating mode, and the pump rotary speed under these two kinds of mode of operations also will have corresponding control method, and to obtain better energy-saving effect, wherein heating mode comprises again simple heating mode and water heating pattern.
When central air conditioner system is operated in refrigeration mode, if when the suction temperature of compressor is less than default low pressure sensor temperature value and continues first period of presetting; Or heat when central air conditioner system is operated in/water heating pattern time, if the delivery temperature of compressor is greater than default high pressure sensor temperature value and continue the second default period constantly, control pump rotary speed from a gear current gear is elevated to, until be elevated to the most high tap position of all gears.
S204: the special circumstances according to central air conditioner system control pump rotary speed.
When central air conditioner system be in defrost pattern, there is anti-frost protection or high temperature protection time; in order to ensure to change heat availability; no matter which kind of gear pump rotary speed is in; all force it to be in most high tap position to operate; when departing from above situation, then according to the Inlet and outlet water temperature difference or its mode of operation, pump rotary speed is controlled.
Embodiment three
The schematic diagram of the control system of water pump of a kind of air conditioner cooling system that Fig. 3 provides for another embodiment of the application.
As shown in Figure 3, the control system of water pump that the present embodiment provides comprises computing module, the first control module and the second control module.
Computing module is for obtaining the Inlet and outlet water temperature difference of air conditioner cooling system.
The so-called Inlet and outlet water temperature difference refers to the difference between the water temperature of the water inlet of air conditioner cooling system and the water temperature of delivery port.Due to when freezing, the water temperature of water inlet will, lower than the water temperature of delivery port, when heating then on the contrary, therefore, when concrete operation, be that the absolute value of the difference of getting the water temperature of water inlet and the water temperature of delivery port is as this Inlet and outlet water temperature difference.
First control module is used for when the Inlet and outlet water temperature difference is less than this Inlet and outlet water temperature difference lower limit, the pump rotary speed of water pump 100 is turned down a gear from current gear, namely next gear is turned down from current gear, the pump rotary speed that the pump rotary speed that next gear is corresponding is more corresponding than current gear is corresponding lower, until pump rotary speed to be adjusted to the lowest gear of all gears of this pump rotary speed, namely with the minimum speed preset running, now no longer turn down.
The quantity of the gear of the pump rotary speed of the water pump 100 in the application can arrange multiple according to actual needs, as 10 gears, and is that the plurality of gear distributes corresponding control strategy by actual control system, the such as strategy such as frequency control, variable voltage speed control.
Second control module is used for when the Inlet and outlet water temperature difference is less than this Inlet and outlet water temperature difference higher limit, the pump rotary speed of water pump 100 is heightened a gear from current gear, namely a upper gear is heightened from current gear, the pump rotary speed that the pump rotary speed that a upper gear is corresponding wants high pressure current gear corresponding.Until pump rotary speed to be adjusted to the most high tap position of all gears of this pump rotary speed, namely with the maximum speed preset running, now no longer continue to heighten.
If the Inlet and outlet water temperature difference is between this Inlet and outlet water temperature difference higher limit and Inlet and outlet water temperature difference lower limit, then keep pump rotary speed constant.
When entering maximum speed or minimum speed, also to detect the situation of the Inlet and outlet water temperature difference moment, and with the lower limit of Inlet and outlet water temperature difference higher limit, the Inlet and outlet water temperature difference, pump rotary speed be regulated respectively according to the Inlet and outlet water temperature difference.
As can be seen from technique scheme, this application provides the control system of water pump of air conditioner cooling system in, this control system of water pump is applied to and utilizes water to carry out the residential central air conditioning cooled, and comprises computing module, the first control module and the second control module.Computing module is for obtaining the Inlet and outlet water temperature difference between the water inlet water temperature of air conditioner cooling system and delivery port; First control module is used for being less than Inlet and outlet water temperature difference lower limit when the Inlet and outlet water temperature difference, then turn down the pump rotary speed of water pump; Second control module is used for when the Inlet and outlet water temperature difference then heightens the pump rotary speed of water pump higher than the higher limit of the Inlet and outlet water temperature difference; If the Inlet and outlet water temperature difference falls between, then keep current pump rotary speed.The control system of water pump provided due to the application utilizes to carry out adaptability adjustment to the judged result of the Inlet and outlet water temperature difference to the pump rotary speed of water pump, suitably pump rotary speed is improved, to meet the needs cooled cooling water when the Inlet and outlet water temperature difference higher limit that Inlet and outlet water temperature difference high pressure is preset; Key is when the Inlet and outlet water temperature difference is less than default Inlet and outlet water temperature difference lower limit, in good time reduction pump rotary speed, the basis meeting central air conditioner system is saved the electric energy of water pump has been exported, thus can electric energy have been saved, reduced the overall energy consumption of central air conditioner system.
Embodiment four
The schematic diagram of the control system of water pump of a kind of air conditioner cooling system that Fig. 4 provides for the another embodiment of the application.
As shown in Figure 4, the control system of water pump that the present embodiment provides is on the basis of a upper embodiment, set up the 3rd control module, the 4th control module and the 5th control module.
The mode of operation of residential central air conditioning comprises refrigeration mode and heating mode, and the pump rotary speed under these two kinds of mode of operations also will have corresponding control method, and to obtain better energy-saving effect, wherein heating mode comprises again simple heating mode and water heating pattern.
3rd control module is used for when central air conditioner system is operated in refrigeration mode, if when the suction temperature of compressor is less than default low pressure sensor temperature value and continues first period of presetting, control pump rotary speed from a gear current gear is elevated to, until be elevated to the most high tap position of all gears.
4th control module be used for heat when central air conditioner system is operated in/water heating pattern time, if the delivery temperature of compressor is greater than default high pressure sensor temperature value and continue the second default period constantly, control pump rotary speed from a gear current gear is elevated to, until be elevated to the most high tap position of all gears.
5th control module be used for when central air conditioner system be in defrost pattern, there is anti-frost protection or high temperature protection time; in order to ensure to change heat availability; no matter which kind of gear pump rotary speed is in; all force it to be in most high tap position to operate; when departing from above situation, then according to the Inlet and outlet water temperature difference or its mode of operation, pump rotary speed is controlled.
Embodiment five
The application provides a kind of residential central air conditioning.This residential central air conditioning is provided with embodiment three or the control system of water pump described in embodiment four, with the energy consumption lower than other residential central air conditionings for home services.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the application.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the application, can realize in other embodiments.Therefore, the application can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (11)
1. a water pump control method for air conditioner cooling system, is applied to residential central air conditioning, it is characterized in that, comprises the steps:
Calculate the temperature difference of the water temperature of the water inlet of described air conditioner cooling system and the water temperature of delivery port, it can be used as the Inlet and outlet water temperature difference;
When the described Inlet and outlet water temperature difference is less than default Inlet and outlet water temperature difference lower limit, the pump rotary speed controlling the water pump of described air conditioner cooling system is reduced to next gear adjacent with described current gear from current gear;
When the described Inlet and outlet water temperature difference is greater than default Inlet and outlet water temperature difference higher limit, controls described pump rotary speed and be elevated to a upper gear adjacent with described current gear from described current gear;
Controlling described pump rotary speed when the described Inlet and outlet water temperature difference is greater than described Inlet and outlet water temperature difference lower limit and is less than described Inlet and outlet water temperature difference higher limit keeps described current gear constant;
Pump rotary speed corresponding to described current gear is greater than pump rotary speed corresponding to next gear described, and pump rotary speed corresponding to affiliated current gear is less than pump rotary speed corresponding to an above-mentioned upper gear.
2. water pump control method as claimed in claim 1, it is characterized in that, described when the described Inlet and outlet water temperature difference is less than default Inlet and outlet water temperature difference lower limit, the pump rotary speed controlling the water pump of described air conditioner cooling system is reduced to next gear adjacent with described current gear from current gear, comprising:
When the described Inlet and outlet water temperature difference is less than described Inlet and outlet water temperature difference lower limit, controls described pump rotary speed and be reduced to next gear described, until be reduced to the lowest gear in default all gears from described current gear.
3. water pump control method as claimed in claim 1, it is characterized in that, described when the described Inlet and outlet water temperature difference is greater than default Inlet and outlet water temperature difference higher limit, control described pump rotary speed and be elevated to a upper gear adjacent with described current gear from described current gear, comprising:
When the described Inlet and outlet water temperature difference is greater than described Inlet and outlet water temperature difference higher limit, control described pump rotary speed from described current gear be reduced to described a gear, until be reduced to the most high tap position in default all gears.
4. the water pump control method as described in any one of claims 1 to 3, is characterized in that, also comprises:
When described central air conditioner system is operated in refrigeration mode, if the suction temperature of its compressor be less than default low pressure sensor temperature value and continue preset the first period time, control described pump rotary speed from described current gear be elevated to described a gear; Or,
Heat when described central air conditioner system is operated in/water heating pattern time, if the delivery temperature of described compressor be greater than default high pressure sensor temperature value and continue preset the second period constantly, control described pump rotary speed from described current gear be elevated to described a gear.
5. water pump control method as claimed in claim 4, is characterized in that, also comprise:
When described central air-conditioning is in defrost process, or when there is anti-frost protection or high temperature protection, control described pump rotary speed and remain on most high tap position in default all gears.
6. a control system of water pump for air conditioner cooling system, is applied to residential central air conditioning, it is characterized in that, comprising:
Computing module, for the temperature difference of the water temperature of the water temperature and delivery port that calculate the water inlet of described air conditioner cooling system, it can be used as the Inlet and outlet water temperature difference;
First control module, during for being less than default Inlet and outlet water temperature difference lower limit when the described Inlet and outlet water temperature difference, the pump rotary speed controlling the water pump of described air conditioner cooling system is reduced to next gear adjacent with described current gear from current gear;
Second control module, during for being greater than default Inlet and outlet water temperature difference higher limit when the described Inlet and outlet water temperature difference, controlling described pump rotary speed and is elevated to a upper gear adjacent with described current gear from described current gear;
Controlling described pump rotary speed when the described Inlet and outlet water temperature difference is greater than described Inlet and outlet water temperature difference lower limit and is less than described Inlet and outlet water temperature difference higher limit keeps described current gear constant;
Pump rotary speed corresponding to described current gear is greater than pump rotary speed corresponding to next gear described, and pump rotary speed corresponding to affiliated current gear is less than pump rotary speed corresponding to an above-mentioned upper gear.
7. control system of water pump as claimed in claim 6, it is characterized in that, described first control module is used for when the described Inlet and outlet water temperature difference is less than described Inlet and outlet water temperature difference lower limit, control described pump rotary speed and be reduced to next gear described, until be reduced to the lowest gear in default all gears from described current gear.
8. control system of water pump as claimed in claim 6, it is characterized in that, described second control module is used for when the described Inlet and outlet water temperature difference is greater than described Inlet and outlet water temperature difference higher limit, control described pump rotary speed from described current gear be reduced to described a gear, until be reduced to the most high tap position in default all gears.
9. the control system of water pump as described in any one of claim 6 ~ 8, is characterized in that, also comprises:
3rd control module, for when described central air conditioner system is operated in refrigeration mode, if the suction temperature of its compressor be less than default low pressure sensor temperature value and continue preset the first period time, control described pump rotary speed from described current gear be elevated to described a gear;
4th control module, for heating when described central air conditioner system is operated in/water heating pattern time, if the delivery temperature of described compressor be greater than default high pressure sensor temperature value and continue preset the second period constantly, control described pump rotary speed from described current gear be elevated to described a gear.
10. control system of water pump as claimed in claim 9, is characterized in that, also comprise:
5th control module, for being in defrost process when described central air-conditioning, or when there is anti-frost protection or high temperature protection, controlling described pump rotary speed and remaining on most high tap position in default all gears.
11. 1 kinds of residential central air conditionings, is characterized in that, are provided with the control system of water pump as described in any one of claim 6 ~ 10.
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| CN107514755A (en) * | 2017-08-30 | 2017-12-26 | 珠海格力电器股份有限公司 | The water pump start-up and shut-down control method and air-conditioning system of air-conditioning system |
| CN107664339A (en) * | 2017-10-23 | 2018-02-06 | 广东美的暖通设备有限公司 | Control method, device and the central air-conditioning of the cooling water pump of central air-conditioning |
| CN108644971A (en) * | 2018-03-21 | 2018-10-12 | 珠海格力电器股份有限公司 | The control method and device of air-conditioning defrost, storage medium and processor |
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| CN107514755A (en) * | 2017-08-30 | 2017-12-26 | 珠海格力电器股份有限公司 | The water pump start-up and shut-down control method and air-conditioning system of air-conditioning system |
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| CN108895735A (en) * | 2018-07-30 | 2018-11-27 | 珠海格力电器股份有限公司 | A kind of freezer unit automation frost control method |
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| CN110425747B (en) * | 2019-08-01 | 2021-04-09 | 广东志高暖通设备股份有限公司 | Variable-frequency water pump control method suitable for variable-frequency heat pump water heater |
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| CN111059767A (en) * | 2019-11-29 | 2020-04-24 | 青岛经济技术开发区海尔热水器有限公司 | Control method of gas water heater and gas water heater |
| CN111059767B (en) * | 2019-11-29 | 2022-06-14 | 青岛经济技术开发区海尔热水器有限公司 | Control method of gas water heater and gas water heater |
| CN111120284B (en) * | 2019-12-26 | 2021-04-27 | 珠海格力电器股份有限公司 | Heat pump system and water pump control method thereof |
| CN111120284A (en) * | 2019-12-26 | 2020-05-08 | 珠海格力电器股份有限公司 | Heat pump system and water pump control method thereof |
| CN112032917A (en) * | 2020-08-31 | 2020-12-04 | 珠海格力电器股份有限公司 | Central air-conditioning cold water system and control method thereof |
| CN112484248A (en) * | 2020-11-02 | 2021-03-12 | 珠海格力电器股份有限公司 | Air conditioner device control method and device and air conditioner |
| CN112393345A (en) * | 2020-11-30 | 2021-02-23 | 珠海格力电器股份有限公司 | Water pump frequency control method and device, evaporative cooler and air conditioning system |
| CN114992906A (en) * | 2021-03-02 | 2022-09-02 | 广东美的暖通设备有限公司 | Control method of heat pump system, and readable storage medium |
| CN114992906B (en) * | 2021-03-02 | 2024-05-07 | 广东美的暖通设备有限公司 | Control method of heat pump system, heat pump system and readable storage medium |
| CN113007868A (en) * | 2021-03-30 | 2021-06-22 | 新奥数能科技有限公司 | Control method and device of central air conditioning system and electronic equipment |
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