CN114251721B - Energy-saving anti-freezing fan coil system, control method and air conditioner - Google Patents
Energy-saving anti-freezing fan coil system, control method and air conditioner Download PDFInfo
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- CN114251721B CN114251721B CN202111503924.XA CN202111503924A CN114251721B CN 114251721 B CN114251721 B CN 114251721B CN 202111503924 A CN202111503924 A CN 202111503924A CN 114251721 B CN114251721 B CN 114251721B
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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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
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
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- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an energy-saving anti-freezing fan coil system, a control method and an air conditioner, relating to the technical field of anti-freezing control, wherein the energy-saving anti-freezing fan coil system comprises a fan coil unit, wherein: the fan coil unit is provided with the water receiving disc and the high-pressure air pump, and the water receiving disc is connected with the detection mechanism and the heating module.
Description
Technical Field
The invention relates to the technical field of anti-freezing control, in particular to an energy-saving anti-freezing fan coil system, a control method and an air conditioner.
Background
The fan coil is a relatively common commercial air conditioning device in the current market, and is more and more widely applied. The working principle is that the air in the room is continuously recycled in the unit, and the air is cooled (heated) after passing through a cold water (hot water) coil pipe, so that the temperature of the room is kept constant. In the process of refrigerating by the fan coil, moisture in the air can be condensed on the heat exchanger to form condensed water, and then the condensed water flows into the water pan, and a large amount of condensed water can be generated when the humidity of the air is high.
The drainage of the water receiving tray cannot discharge all the water, if the water is in a low-temperature environment at minus ℃, the residual water can be frozen and frozen, the water storage height of the water receiving tray is greatly reduced, and even a water outlet of the water receiving tray can be blocked, so that the condition that condensed water is blown out from an air opening when a fan coil runs is caused; in addition, after the fan coil stops running, residual water of a copper pipe in the heat exchanger does not flow, so that the copper pipe is easy to freeze in a low-temperature environment, the heat exchange effect is influenced, and even the copper pipe in the heat exchanger is cracked and damaged; therefore, the invention provides an energy-saving anti-freezing fan coil system, a control method and an air conditioner, and aims to overcome the defects in the prior art.
Disclosure of Invention
In order to overcome the above-mentioned disadvantages of the prior art, it is an object of the present invention to provide: an energy-saving antifreeze fan coil system comprising a fan coil unit, wherein: the fan-coil unit is provided with a water pan and a high-pressure air pump, and the water pan is connected with a detection mechanism and a heating module.
The further improvement lies in that: the detection mechanism comprises a first temperature detector, a second temperature detector and a water level detection assembly; and a water level detection assembly and a second temperature tester are arranged in the water pan.
The further improvement lies in that: also comprises a combined piping system; the water pan is connected with a combined pipe system, the combined pipe system is provided with a valve component, the lower end of an air inlet of the fan-coil unit is provided with an external heat exchanger, the combined pipe system is connected with the external heat exchanger, the combined pipe system is provided with a first temperature tester, and heating modules are symmetrically arranged below the inner portion of the water pan.
The further improvement is that: the water level detection assembly comprises a low water level detector and a high water level detector, the low water level detector is arranged below the inside of the water receiving tray on one side of the heating module, and the high water level detectors are symmetrically arranged at the middle position inside the water receiving tray.
The further improvement lies in that: the high-pressure air pump comprises a first high-pressure air pump and a second high-pressure air pump; the fan-coil unit is provided with a first high-pressure air pump and a second high-pressure air pump through connecting pipes, the first high-pressure air pump is arranged on the fan-coil unit and is positioned on one side, without a water outlet, of the bottom of the water receiving tray, and the second high-pressure air pump is arranged on the fan-coil unit and is positioned at the water collecting head of the water receiving tray.
The further improvement lies in that: and a first electric water valve is arranged on the connecting pipe at the first high-pressure air pump, and a second electric water valve is arranged on the connecting pipe at the second high-pressure air pump.
An energy-saving anti-freezing fan coil control method is applied to an air conditioning unit, wherein: the method comprises the following steps:
detecting data information of the water receiving tray;
and controlling the working mode of the wind coil according to the data information.
The further improvement lies in that: the data information comprises water level data and temperature data;
starting a high water level detector and a second temperature tester after the fan coil unit stops running, and acquiring water level data and temperature data;
judging whether the water level data reach the position of a high water level detector or not and judging whether the temperature data are less than 0 ℃;
and controlling the fan coiler to execute a control mode according to the judgment result.
The further improvement lies in that: when the water level data does not reach the position of the high water level detector and the temperature data is more than or equal to 0 ℃, judging that no data abnormal state occurs at the moment, and continuing executing an operation stopping instruction by the fan coil unit;
when the water level data reach the position of the high water level detector or the temperature data are less than 0 ℃, judging that a data abnormal state occurs at the moment, synchronously sending the data abnormal state to the heating module, enabling the fan coil unit to enter a heating mode, and controlling the fan coil system to execute corresponding actions until the water level data are less than the height of the high water level detector and the temperature data are more than or equal to 0 ℃.
An air conditioning unit comprises a computer readable storage medium and a processor, wherein a computer program is stored in the computer readable storage medium, and when the computer program is read and executed by the processor, the control method of the energy-saving anti-freezing fan coil is realized
The invention has the beneficial effects that: according to the invention, the low water level detector, the high water level detector, the first temperature tester and the second temperature tester are arranged for data detection to feed back the internal information of the water receiving tray on the fan coil unit, and then the operation control of the first electric valve, the second electric valve, the third electric valve, the fourth electric valve, the first electric water valve and the second electric water valve and the operation control of the heating module, the first high-pressure air pump and the second high-pressure air pump can be realized, so that the cyclic utilization of the heated water heat can be realized, the fan coil unit realizes an anti-freezing effect in a low-temperature environment, the problems of freezing of residual water in the water receiving tray and freezing of copper pipes in a heat exchanger under the low-temperature environment are solved, and the fan coil unit can keep a long-term effective heat exchange effect and stable heat exchange efficiency, and has the advantages of high efficiency and energy saving.
Drawings
FIG. 1 is a schematic structural diagram of an energy-saving anti-freezing fan coil system according to the present invention;
FIG. 2 is a schematic view of the internal structure of the drip tray according to the present invention;
FIG. 3 is a schematic view of the installation positions of the first high-pressure air pump and the second high-pressure air pump according to the present invention;
FIG. 4 is a schematic flow chart of the energy-saving anti-freezing fan coil control method.
Wherein: 1. a fan coil unit; 2. a water pan; 3. a combined piping system; 301. a first water pipe; 302. a second water pipe; 303. a third water pipe; 304. a fourth water pipe; 4. a valve assembly; 401. a first electrically operated valve; 402. a second electrically operated valve; 403. a third electrically operated valve; 404. a fourth electrically operated valve; 5. an external heat exchanger; 6. a first temperature tester; 7. a heating module; 8. a water level detection assembly; 801. a low water level detector; 802. a high water level detector; 9. a second temperature tester; 10. a first high pressure air pump; 11. a second high pressure air pump; 12. a first electrically operated water valve; 13. and a second electrically operated water valve.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
Example one
According to the drawings 1-3, the embodiment provides an energy-saving anti-freezing fan coil system, which comprises a fan coil unit 1, wherein a water receiving disc 2 is arranged on the fan coil unit 1, a combined piping system 3 is connected to the water receiving disc 2, a valve assembly 4 is arranged on the combined piping system 3, an external heat exchanger 5 is arranged at the lower end of an air inlet of the fan coil unit 1, the combined piping system 3 is connected with the external heat exchanger 5, a first temperature tester 6 is arranged on the combined piping system 3, heating modules 7 are symmetrically arranged below the inner portion of the water receiving disc 2, a water level detection assembly 8 is arranged in the water receiving disc 2, and a second temperature tester 9 is arranged inside the water receiving disc 2.
The combined pipe system 3 comprises a first water pipe 301, a second water pipe 302, a third water pipe 303 and a fourth water pipe 304, wherein the first water pipe 301 is connected with the water pan 2, the second water pipe 302 and the third water pipe 303 are connected with the first water pipe 301, and the fourth water pipe 304 is arranged on the third water pipe 303.
The water level detection assembly 8 comprises a low water level detector 801 and a high water level detector 802, the low water level detector 801 is arranged below the inside of the water pan 2 on one side of the heating module 7, and the high water level detector 802 is symmetrically arranged at the middle position inside the water pan 2.
The fan-coil unit 1 is provided with a first high-pressure air pump 10 and a second high-pressure air pump 11 through connecting pipes, the setting position of the first high-pressure air pump 10 on the fan-coil unit 1 is located on the side, without a water outlet, of the bottom of the water receiving tray 2, and the setting position of the second high-pressure air pump 11 on the fan-coil unit 1 is located at the water collecting head of the water receiving tray 2.
And a first electric water valve 12 is arranged on the connecting pipe at the first high-pressure air pump 10, and a second electric water valve 13 is arranged on the connecting pipe at the second high-pressure air pump 11.
The valve assembly 4 comprises a first electric valve 401, a second electric valve 402, a third electric valve 403 and a fourth electric valve 404, and the first electric valve 401, the second electric valve 402, the third electric valve 403 and the fourth electric valve 404 are respectively arranged on the first water pipe 301, the second water pipe 302, the third water pipe 303 and the fourth water pipe 304.
The internal information of the water receiving tray 2 on the fan coil unit 1 is fed back by setting the low water level detector 801, the high water level detector 802, the first temperature tester 6 and the second temperature tester 9 for data detection, and the cyclic utilization of the heat of the heated water can be realized by controlling the first electric valve 401, the second electric valve 402, the third electric valve 403, the fourth electric valve 404, the first electric water valve 12 and the second electric water valve 13 and controlling the operation of the heating module 7, the first high-pressure air pump 10 and the second high-pressure air pump 11, so that the fan coil unit 1 realizes the antifreezing effect in a low-temperature environment.
Example two
Referring to fig. 4, the embodiment provides an energy-saving anti-freezing fan coil control method, which is applied to an air conditioning unit, and includes the following steps:
starting a high water level detector 802 and a second temperature tester 9 after the fan-coil unit 1 stops running, and acquiring water level data and temperature data;
judging whether the water level data reaches the position of a high water level detector 802 or not and judging whether the temperature data is less than 0 ℃;
and controlling the fan coiler to execute a corresponding control scheme according to the judgment result.
When the water level data does not reach the position of the high water level detector 802 and the temperature data is more than or equal to 0 ℃, judging that no data abnormal state occurs at the moment, and continuing executing an operation stopping instruction by the fan coil unit 1;
when the water level data reaches the position of the high water level detector 802 or the temperature data is less than 0 ℃, the abnormal data state is judged to occur at the moment, the abnormal data state is synchronously sent to the heating module 7, the fan coil unit 1 enters the heating mode, and the fan coil system is controlled to execute corresponding actions until the water level data is less than the height of the high water level detector 802 and the temperature data is more than or equal to 0 ℃.
EXAMPLE III
According to the method for controlling the energy-saving anti-freezing fan coil, shown in fig. 4, when water level data reaches the position of a high water level detector 802 or temperature data is less than 0 ℃, it is determined that a data abnormal state occurs at the time, the data abnormal state is synchronously sent to a heating module 7, a fan coil unit 1 enters a heating mode, and a fan coil system is controlled to execute corresponding actions until the water level data is less than the height of the high water level detector 802 and the temperature data is more than or equal to 0 ℃;
the method comprises the following specific steps:
first, the first electrically operated valve 401 is closed, and the second electrically operated valve 402 and the third electrically operated valve 403 are opened;
then, the first electric water valve 12 is opened, the first high-pressure air pump 10 is started, after the ice cubes are heated and melted into hot water, the ice cubes rapidly flow to the first water pipe 301 through the first high-pressure air pump 10, then enter the second water pipe 302, and then enter the external heat exchanger 5;
meanwhile, a fan of the fan-coil unit 1 is started, hot air is blown to a heat exchanger inside the fan-coil unit 1 by using the heat of hot water, and ice formed by residual water in a copper pipe of the heat exchanger inside is melted;
then, the second electric water valve 13 is opened, the second high-pressure air pump 11 is started, and the water melted in the copper pipe is blown out from top to bottom and flows to the water receiving tray 2;
when the water level or ice blocks in the water receiving tray 2 are lower than the low water level detector 801, the first electric water valve 12 is closed, and the first high-pressure air pump 10 is closed;
when the temperature detected by the first temperature tester 6 is lower than the set temperature (generally set to be higher than 0 ℃), the first electric valve 401 and the fourth electric valve 404 are opened, the third electric valve 403 is closed, the low-temperature water is discharged from the fourth water pipe 304 and fed back to the fan of the fan-coil unit 1, the fan executes a closing instruction, and the second electric water valve 13 and the second high-pressure air pump 11 are closed, so that the anti-freezing control is completed.
The control method of the energy-saving anti-freezing fan coil can solve the problems of freezing of residual water in the water coil 2 and freezing of copper pipes in the heat exchanger in a low-temperature environment, so that the fan coil unit 1 can keep long-term effective heat exchange effect and stable heat exchange efficiency, and has the advantages of high efficiency and energy saving.
Example four
An air conditioning unit comprises a computer readable storage medium storing a computer program and a processor, wherein the computer program is read by the processor and runs to realize an energy-saving anti-freezing fan coil control method. The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides an energy-conserving fan coil system that prevents frostbite, includes fan coil unit, its characterized in that: the fan-coil unit on be equipped with water collector and high-pressure air pump, the water collector be connected with detection mechanism and heating module, be connected with the combination piping on the water collector, the combination piping includes first water pipe, second water pipe, third water pipe and fourth water pipe, first water pipe is connected with the water collector, second water pipe, third water pipe and first water union coupling, the fourth water pipe sets up on the third water pipe, be equipped with the valve assembly on the combination piping, the valve assembly includes first motorised valve, second motorised valve, third motorised valve and fourth motorised valve, first motorised valve, second motorised valve, third motorised valve and fourth motorised valve set up respectively on first water pipe, second water pipe, third water pipe and fourth water pipe, detection mechanism includes the second temperature tester, the inside of water collector sets up the second temperature tester.
2. The energy-saving antifreeze fan coil system of claim 1, wherein: the detection mechanism further comprises a first temperature detector and a water level detection assembly; and a water level detection assembly is arranged in the water receiving tray.
3. The energy saving antifreeze fan coil system of claim 1 or 2, wherein: the lower end of an air inlet of the fan-coil unit is provided with an external heat exchanger, the combined pipe system is connected with the external heat exchanger, the combined pipe system is provided with a first temperature tester, and heating modules are symmetrically arranged below the inner part of the water pan.
4. The energy-saving antifreeze fan coil system of claim 2, wherein: the water level detection assembly comprises a low water level detector and a high water level detector, the low water level detector is arranged below the inside of the water receiving tray on one side of the heating module, and the high water level detectors are symmetrically arranged at the middle position inside the water receiving tray.
5. The energy-saving antifreeze fan coil system of claim 1, wherein: the high-pressure air pump comprises a first high-pressure air pump and a second high-pressure air pump; the fan-coil unit is provided with a first high-pressure air pump and a second high-pressure air pump through connecting pipes, the first high-pressure air pump is arranged on the fan-coil unit and is positioned on the side, without the water outlet, of the bottom of the water receiving tray, and the second high-pressure air pump is arranged on the fan-coil unit and is positioned at the water collecting head of the water receiving tray.
6. The energy-saving antifreeze fan coil system of claim 5, wherein: and a first electric water valve is arranged on the connecting pipe at the first high-pressure air pump, and a second electric water valve is arranged on the connecting pipe at the second high-pressure air pump.
7. An energy-saving anti-freezing fan coil control method is applied to an air conditioning unit and is characterized in that: the use of the energy efficient antifreeze fan coil system of claim 6, comprising the steps of:
detecting data information of the water receiving tray;
controlling the working mode of the air coil according to the data information;
the data information comprises water level data and temperature data;
starting a high water level detector and a second temperature tester after the fan coil unit stops running, and acquiring water level data and temperature data;
when the water level data reaches the position of the high water level detector or the temperature data is less than 0 ℃, judging that a data abnormal state occurs at the moment, synchronously sending the data abnormal state to the heating module, enabling the fan coil unit to enter a heating mode, and controlling the fan coil unit to execute corresponding actions until the water level data is less than the height of the high water level detector and the temperature data is more than or equal to 0 ℃;
the method specifically comprises the following steps:
the first electric valve is closed, and the second electric valve and the third electric valve are opened;
the first electric water valve is opened, the first high-pressure air pump is started, and after ice cubes are heated and melted into hot water, the ice cubes rapidly flow to the first water pipe, then enter the second water pipe and then enter the external heat exchanger through the first high-pressure air pump;
a fan of the fan-coil unit is started, hot air is blown to a heat exchanger inside the fan-coil unit by using the heat of hot water, and ice formed by the residual water in a copper pipe of the internal heat exchanger is melted;
the second electric water valve is opened, the second high-pressure air pump is started, and water melted in the copper pipe is blown out from top to bottom and flows to the water receiving disc;
when the water level or ice blocks in the water pan are lower than the low water level detector, the first electric water valve is closed, and the first high-pressure air pump is closed;
when the first temperature tester detects that the temperature is lower than the set temperature, the first electric valve and the fourth electric valve are opened, the third electric valve is closed, low-temperature water is discharged from the fourth water pipe and fed back to a fan of the fan coil unit, the fan executes a closing instruction, the second electric water valve and the second high-pressure air pump are closed, and anti-freezing control is completed.
8. The energy-saving anti-freezing fan coil control method according to claim 7, characterized in that:
the data information comprises water level data and temperature data;
starting a high water level detector and a second temperature tester after the fan-coil unit stops running, and acquiring water level data and temperature data;
judging whether the water level data reach the position of a high water level detector or not and judging whether the temperature data are less than 0 ℃;
and controlling the fan coiler to execute a control mode according to the judgment result.
9. The energy-saving anti-freezing fan coil control method according to claim 8, characterized in that:
and when the water level data does not reach the position of the high water level detector and the temperature data is more than or equal to 0 ℃, judging that the abnormal data state does not occur at the moment, and continuing executing the operation stopping instruction by the fan coil unit.
10. An air conditioning unit, its characterized in that: comprising a computer readable storage medium storing a computer program and a processor, the computer program being read and executed by the processor to implement the energy saving antifreeze fan coil control method as set forth in any of claims 7-9.
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| CN202111503924.XA CN114251721B (en) | 2021-12-09 | 2021-12-09 | Energy-saving anti-freezing fan coil system, control method and air conditioner |
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| CN215062421U (en) * | 2021-05-13 | 2021-12-07 | 青岛海信日立空调系统有限公司 | Fan coil |
| CN113310276A (en) * | 2021-07-06 | 2021-08-27 | 王延华 | Low-temperature defrosting water pan, drainage pipeline and use method thereof |
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| CN114251721A (en) | 2022-03-29 |
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