CN111059740A - Emergency automatic drainage device for air conditioner water system and control method thereof - Google Patents
Emergency automatic drainage device for air conditioner water system and control method thereof Download PDFInfo
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- CN111059740A CN111059740A CN201911355158.XA CN201911355158A CN111059740A CN 111059740 A CN111059740 A CN 111059740A CN 201911355158 A CN201911355158 A CN 201911355158A CN 111059740 A CN111059740 A CN 111059740A
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- water
- temperature
- air conditioner
- air
- valve
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Abstract
The invention provides an emergency automatic drainage device of an air conditioner water system and a control method thereof, wherein the automatic drainage device comprises: the controller and the drain valve are connected with the storage battery; when the air conditioner power supply is normally powered on, if the air conditioner power supply is adopted as the power supply of the controller and/or the drain valve for power supply, after the power supply of the air conditioner is powered off, the power supply of the controller and/or the drain valve is switched to the storage battery by the air conditioner power supply, and the drain valve is controlled by the controller to drain water of the air conditioner water system.
Description
Technical Field
The invention relates to an air-conditioning water system, in particular to an emergency automatic drainage device of an air-conditioning water system and a control method thereof.
Background
When the air conditioning equipment is powered off, the anti-freezing function of the unit is invalid, and the anti-freezing purpose is not achieved. Therefore, there is a need for an automatic drainage device for an air conditioning system water system in case of power failure in autumn and winter. At present, most patents detect water temperature and then close the valve by electrifying through a normally closed electromagnetic valve, and open the electromagnetic valve for drainage after power failure; in fact, most of time, the electromagnetic valve is in a power-on closed state, and resource waste exists; the water temperature fluctuation can cause the water valve to be frequently opened and closed, and the service life of the water valve is reduced.
Disclosure of Invention
In view of the above, the present invention provides an emergency automatic drainage device for an air conditioning water system and a control method thereof, to solve the above problems, specifically:
the invention provides an emergent automatic drainage device of an air conditioner water system in a first aspect, which comprises: the controller and the drain valve are connected with the storage battery;
when the air conditioner power supply is normally powered on, if the air conditioner power supply is adopted as the power supply of the controller and/or the drain valve for power supply, after the power supply of the air conditioner is powered off, the power supply of the controller and/or the drain valve is switched to the storage battery by the air conditioner power supply, and the drain valve is controlled by the controller to drain water of the air conditioner water system.
Further optionally, the storage battery is connected with the air conditioner power supply, and the storage battery is charged by the air conditioner power supply when the air conditioner power supply is normally powered.
Further optionally, the method further includes: a temperature monitoring unit for monitoring the water supply temperature and the water return temperature in the air-conditioning water system,
before controlling the drain valve to drain the air-conditioning water system, the controller analyzes the water supply temperature and the water return temperature in the air-conditioning water system, controls the drain valve to drain the air-conditioning water system according to the water supply temperature and the water return temperature,
wherein the water supply temperature is: the water temperature in a water return pipeline between the tail end of an air conditioner and an air conditioning unit in an air conditioning water system; the return water temperature is as follows: the temperature of water in a water supply pipeline from an air conditioning unit to the tail end of an air conditioner in an air conditioning water system.
Further optionally, control according to supply water temperature and return water temperature the drain valve carries out air conditioner water system drainage, includes:
when the water supply temperature is less than the preset water supply temperature or the return water temperature is less than the preset return water temperature, the controller controls the drainage valve to be opened;
and when the water supply temperature is greater than or equal to a preset water supply temperature or the return water temperature is greater than or equal to a preset return water temperature, the controller controls the drain valve to close.
Further optionally, the method further includes: a timing unit for recording a drainage time period when the controller controls the drainage valve to drain water,
and when the controller judges that the drainage time length reaches the preset drainage time length, the drainage valve is controlled to be closed.
Further optionally, the drain valve is arranged on a drain pipeline connected with a water supply pipeline in the air-conditioning water system.
Further optionally, the drain valve is a normally closed solenoid valve,
when the air-conditioning water system drains water, the controller controls the storage battery to supply power to the electromagnetic valve, and the electromagnetic valve is opened; and the controller controls the storage battery to power off the electromagnetic valve, and the electromagnetic valve is closed.
The second aspect of the present invention provides a method for controlling an emergency automatic drainage device of an air conditioning water system, wherein the method for controlling the emergency automatic drainage device of the air conditioning water system adopts any one of the automatic drainage devices, and comprises:
detecting whether the power supply of the air conditioner is cut off;
when the power supply of the air conditioner is cut off, the automatic drainage device is switched to be powered by the storage battery;
and judging whether the air-conditioning water system drains water or not according to the water supply temperature and the return water temperature in the air-conditioning water system.
Further optionally, the control method further includes:
recording drainage time when the air conditioner water system drains water;
judging whether the air conditioner drainage is emptied according to the drainage time:
and when the drainage time reaches the preset drainage time, judging that the water is drained, and closing the drainage valve.
Further optionally, the judging whether to drain the air-conditioning water system according to the water supply temperature and the water return temperature in the air-conditioning water system comprises:
when the water supply temperature is less than the preset water supply temperature or the return water temperature is less than the preset return water temperature,
the controller controls the drain valve to be opened;
when the water supply temperature is more than or equal to the preset water supply temperature or the return water temperature is more than or equal to the preset return water temperature,
the controller controls the drainage valve to be closed.
Has the advantages that:
the invention provides an emergency automatic drainage device of an air conditioner water system and a control method thereof. Meanwhile, the water is prevented from being discharged by mistake, the waste is avoided, and the energy is saved and the emission is reduced.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.
FIG. 1 is a schematic diagram of an emergency automatic drainage device of an air conditioning water system according to an embodiment of the present invention;
FIG. 2 is a control flow diagram of one embodiment of the present invention;
fig. 3 is a schematic diagram of an indirect refrigeration system in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
The temperature in the pipe is lower in autumn and winter. When power is cut off or power is cut off, the water in the system is not discharged in time, and the water pipe is frozen and cracked. In the drainage process, if the water temperature fluctuation is large, the drainage valve can be frequently opened and closed, and the reliability of the system is reduced. Therefore, the drainage condition needs to be accurately judged, the error drainage is avoided, the normally closed electromagnetic valve is opened after the power failure is not used, and the energy conservation and emission reduction are realized. Therefore, the scheme of the invention is to avoid the control in a conventional mode from being invalid when power is cut off; the controller is connected with the storage battery, and the drain valve is controlled to open for draining water after the unit is powered off. The water pipe is prevented from being frozen and cracked due to failure of timely drainage of system water during power failure, and the reliability is improved. By setting the drainage time, the opening and closing times of the drainage valve are reduced, and the reliability is improved. Whether the unit is powered off is detected firstly, and then the water temperature of the water inlet pipe and the water outlet pipe is detected to judge whether water is drained, so that the detection accuracy is improved, and the water is prevented from being drained by mistake.
To better illustrate the scheme of the present invention, the following specific examples are provided.
Example 1:
in the present embodiment, there is provided an emergency automatic drain device for an air conditioning water system, the automatic drain device including: the water draining device comprises a storage battery, a controller and a water draining valve, wherein the controller and the water draining valve are connected with the storage battery. The automatic drainage device can adopt a storage battery to supply power for the power utilization part (at least one of a controller, a drainage valve and the like) in the device, and can also supply power for the power utilization part in the device through an air conditioner power supply.
When the air conditioner power supply is normally powered on, if the air conditioner power supply is adopted as the power supply of the controller and/or the drain valve for power supply, after the power supply of the air conditioner is powered off, the power supply of the controller and/or the drain valve is switched to the storage battery by the air conditioner power supply, and the drain valve is controlled by the controller to drain water of the air conditioner water system.
For the electric power storage of the storage battery, the storage battery is connected with the air conditioner power supply, and the storage battery is stored by the air conditioner power supply when the air conditioner power supply normally supplies power. Specifically, in an alternative implementation, as shown in fig. 1, the air conditioner power supply supplies power to the storage battery, and then the storage battery is used as a direct power supply of the automatic water discharging device to supply power to the controller and/or the water discharging valve. In another alternative implementation, the air conditioner power supply, the storage battery and the power utilization part in the device can be connected with each other two by two. At this moment, in the normal power supply process of the air conditioner power supply, the storage battery is connected with the power utilization part in the automatic drainage device but does not form a loop, after the power failure of the air conditioner power supply, a circuit protection unit in the automatic drainage device is triggered, the protection unit switches the power supply, so that the storage battery supplies power to the power utilization parts such as a controller in the device, and the storage battery always keeps supplying power to the circuit protection unit to prevent the power supply of the power utilization parts such as the controller and the drainage valve from being incapable of switching.
Further optionally, the emergency automatic drainage paper further includes: and a temperature monitoring unit. The controller is used for analyzing the water supply temperature and the water return temperature in the air-conditioning water system before controlling the water discharge valve to discharge water in the air-conditioning water system, and controlling the water discharge valve to discharge water in the air-conditioning water system according to the water supply temperature and the water return temperature. Because air conditioner water system is comparatively complicated, adopt in this embodiment to supply water temperature and return water temperature to monitor, wherein supply water temperature is: the water temperature in a water return pipeline between the tail end of an air conditioner and an air conditioning unit in an air conditioning water system; the return water temperature is as follows: the temperature of water in a water supply pipeline from an air conditioning unit to the tail end of an air conditioner in an air conditioning water system.
Further, when the drain valve is controlled to drain the air conditioner water system according to the water supply temperature and the water return temperature: when the water supply temperature is less than the preset water supply temperature or the return water temperature is less than the preset return water temperature, the controller controls the drainage valve to be opened; and when the water supply temperature is greater than or equal to a preset water supply temperature or the return water temperature is greater than or equal to a preset return water temperature, the controller controls the drain valve to close.
Because it is necessary to determine whether the water is empty, the present embodiment further includes: a timing unit. The timing unit records the drainage time length when the controller controls the drainage valve to drain water, wherein the drainage valve is controlled to be closed when the controller judges that the drainage time length reaches the preset drainage time length.
In order to simplify the drainage structure, in this embodiment, drainage is performed only for one path in the loop. Optionally, the drain valve is arranged on a drain pipeline connected with a water supply pipeline in the air-conditioning water system. The drain valve is a normally closed electromagnetic valve, when the air-conditioning water system drains water, the controller controls the storage battery to supply power to the electromagnetic valve, and the electromagnetic valve is opened; and the controller controls the storage battery to power off the electromagnetic valve, and the electromagnetic valve is closed.
Example 2
In this embodiment, a control method of an emergency automatic drain device of an air conditioning water system is provided, where the control method employs the automatic drain device described in embodiment 1, and includes: detecting whether the power supply of the air conditioner is cut off; when the power supply of the air conditioner is cut off, the automatic drainage device is switched to be powered by the storage battery; and judging whether the air-conditioning water system drains water or not according to the water supply temperature and the return water temperature in the air-conditioning water system.
In this embodiment, the control method further includes: recording drainage time when the air conditioner water system drains water; judging whether the air conditioner drainage is emptied according to the drainage time: and when the drainage time reaches the preset drainage time, judging that the water is drained, and closing the drainage valve. The step of judging whether to drain the air-conditioning water system according to the water supply temperature and the return water temperature in the air-conditioning water system comprises the following steps: when the water supply temperature is less than the preset water supply temperature or the return water temperature is less than the preset return water temperature, the controller controls the drainage valve to be opened; and when the water supply temperature is greater than or equal to a preset water supply temperature or the return water temperature is greater than or equal to a preset return water temperature, the controller controls the drain valve to close.
To further illustrate the solution of the present invention, a specific workflow of one implementation is provided for the indirect refrigeration system shown in fig. 3.
As shown in figures 1-2, the device based on the invention is controlled by a controller, and the controller is connected with a storage battery to realize that the unit can continue to work after power failure. When the air conditioner unit is not powered off, the device does not act after detection; when the air conditioner set is powered off, the device continues to detect the water temperature, opens the electromagnetic two-way valve to drain water and records the water drainage time after the judgment that the requirement is met, and otherwise does not act to continue to detect the water temperature. And (4) closing the electromagnetic two-way valve to stop draining after the specified draining time t is reached. Whether the water is drained completely is judged by detecting the drainage time t 1.
FIG. 1 is a schematic diagram of the system of the present invention, in which the controller of the device is connected with a storage battery, the storage battery is connected with a power supply of the unit, a water inlet temperature sensing bulb Ts1 is arranged at the position of a water return pipe (a water inlet pipe in FIG. 1), a water outlet temperature sensing bulb Ts2 is arranged at the position of a water supply pipe (a water outlet pipe in FIG. 1) for detecting the temperature of the water in the system, and the two temperature sensing bulbs are used for accurately detecting the temperature of the water and avoiding the misjudgment caused by the difference of the temperature of the inlet water. The water outlet pipe is connected with the electromagnetic two-way valve in a bypass mode and is powered on and then drained.
FIG. 2 is a control flow chart of the present invention, and the control method is as follows:
step 1, judging whether the unit is powered off, and if so, entering step 2; if not, ending;
step 2, acquiring a bulb temperature Ts1 of the inlet water pipe and a bulb temperature Ts2 of the outlet water;
and 3, judging that Ts1 is less than or equal to T or Ts2 is less than or equal to T (T is a preset temperature and is greater than 0, and can be 3). If yes, entering step 4; if not, go to step 2.
And step 4, opening the electromagnetic two-way valve to drain water, and recording the water drainage time t 1.
And 5, judging that the drainage time t1 is more than or equal to t, t (drainage system time which can be set according to actual conditions). If yes, go to step 6; if not, go to step 3.
And 6, closing the electromagnetic two-way valve.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. The utility model provides an emergent automatic drainage device of air conditioner water system which characterized in that includes: the controller and the drain valve are connected with the storage battery;
when the air conditioner power supply is normally powered on, if the air conditioner power supply is adopted as the power supply of the controller and/or the drain valve for power supply, after the power supply of the air conditioner is powered off, the power supply of the controller and/or the drain valve is switched to the storage battery by the air conditioner power supply, and the drain valve is controlled by the controller to drain water of the air conditioner water system.
2. The automatic water discharge device according to claim 1, wherein the storage battery is connected to the air conditioning power supply, and the storage battery is charged by the air conditioning power supply when the air conditioning power supply is normally supplied with power.
3. The automatic water discharge device according to claim 2, further comprising: a temperature monitoring unit for monitoring the water supply temperature and the water return temperature in the air-conditioning water system,
before controlling the drain valve to drain the air-conditioning water system, the controller analyzes the water supply temperature and the water return temperature in the air-conditioning water system, controls the drain valve to drain the air-conditioning water system according to the water supply temperature and the water return temperature,
wherein the water supply temperature is: the water temperature in a water return pipeline between the tail end of an air conditioner and an air conditioning unit in an air conditioning water system; the return water temperature is as follows: the temperature of water in a water supply pipeline from an air conditioning unit to the tail end of an air conditioner in an air conditioning water system.
4. The automatic drain device according to claim 3, wherein the drain valve is controlled to drain the air conditioning water system according to the supply water temperature and the return water temperature, and the automatic drain device comprises:
when the water supply temperature is less than the preset water supply temperature or the return water temperature is less than the preset return water temperature, the controller controls the drainage valve to be opened;
and when the water supply temperature is greater than or equal to a preset water supply temperature or the return water temperature is greater than or equal to a preset return water temperature, the controller controls the drain valve to close.
5. The automatic water discharge device according to claim 4, further comprising: a timing unit for recording a drainage time period when the controller controls the drainage valve to drain water,
and when the controller judges that the drainage time length reaches the preset drainage time length, the drainage valve is controlled to be closed.
6. The automatic water discharge device according to claim 5, wherein the water discharge valve is provided on a water discharge line connected to a water supply line in an air-conditioning water system.
7. The automatic water discharge device according to claim 6, wherein the water discharge valve is a normally closed solenoid valve,
when the air-conditioning water system drains water, the controller controls the storage battery to supply power to the electromagnetic valve, and the electromagnetic valve is opened; and the controller controls the storage battery to power off the electromagnetic valve, and the electromagnetic valve is closed.
8. A control method of an emergency automatic drain device of an air conditioner water system, characterized in that the control method adopts the automatic drain device of any one of claims 1 to 7, comprising:
detecting whether the power supply of the air conditioner is cut off;
when the power supply of the air conditioner is cut off, the automatic drainage device is switched to be powered by the storage battery;
and judging whether the air-conditioning water system drains water or not according to the water supply temperature and the return water temperature in the air-conditioning water system.
9. The control method of the automatic drain device of the air-conditioning water system according to claim 8, further comprising:
recording drainage time when the air conditioner water system drains water;
judging whether the air conditioner drainage is emptied according to the drainage time:
and when the drainage time reaches the preset drainage time, judging that the water is drained, and closing the drainage valve.
10. The control method of the automatic drainage device of the air conditioner water system according to claim 9, wherein the judging whether to drain the air conditioner water system according to the supply water temperature and the return water temperature in the air conditioner water system comprises:
when the water supply temperature is less than the preset water supply temperature or the return water temperature is less than the preset return water temperature,
the controller controls the drain valve to be opened;
when the water supply temperature is more than or equal to the preset water supply temperature or the return water temperature is more than or equal to the preset return water temperature,
the controller controls the drainage valve to be closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911355158.XA CN111059740A (en) | 2019-12-25 | 2019-12-25 | Emergency automatic drainage device for air conditioner water system and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911355158.XA CN111059740A (en) | 2019-12-25 | 2019-12-25 | Emergency automatic drainage device for air conditioner water system and control method thereof |
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| CN111059740A true CN111059740A (en) | 2020-04-24 |
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| CN201911355158.XA Pending CN111059740A (en) | 2019-12-25 | 2019-12-25 | Emergency automatic drainage device for air conditioner water system and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111707005A (en) * | 2020-05-25 | 2020-09-25 | 广东纽恩泰新能源科技发展有限公司 | Automatic drainage anti-freezing system for power failure |
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Application publication date: 20200424 |