CN112762508A - Waterless floor heating heat recovery control method - Google Patents
Waterless floor heating heat recovery control method Download PDFInfo
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- CN112762508A CN112762508A CN202011639125.0A CN202011639125A CN112762508A CN 112762508 A CN112762508 A CN 112762508A CN 202011639125 A CN202011639125 A CN 202011639125A CN 112762508 A CN112762508 A CN 112762508A
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- Prior art keywords
- heat exchanger
- heat
- outdoor unit
- floor heating
- control method
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
- F24D15/04—Other domestic- or space-heating systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1096—Arrangement or mounting of control or safety devices for electric heating systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a waterless floor heating heat recovery control method, wherein a high-temperature and high-pressure refrigerant is subjected to heat release by an indoor unit, enters a second heat exchanger, is throttled by an outdoor electronic expansion valve and then enters a first heat exchanger, and meanwhile, the wind generated by a fan transfers waste heat on the second heat exchanger to the first heat exchanger, so that the first heat exchanger absorbs the heat of the second heat exchanger. According to the invention, the fan transmits the waste heat of the second heat exchanger to the first heat exchanger, so that the waste heat is recycled, the evaporation pressure of the system is improved, the frosting of the first heat exchanger can be inhibited, meanwhile, the heat exchange efficiency of the outdoor unit is improved, the running frequency of a compressor of the outdoor unit can be reduced, and the purpose of energy conservation is achieved.
Description
Technical Field
The invention relates to a waterless floor heating heat recovery control method.
Background
The waterless floor heating system has a low and stable condensation working condition, is combined with floor radiation, does not have a large amount of concentration of local heat, perfectly conforms to a human physiological demand temperature curve, and in an indoor environment using the waterless floor heating system, the air velocity gradient is uniform and reasonable, so that the loss of a large amount of moisture in human skin is avoided, dust and bacteria in the environment can be inhibited from moving about, and the indoor air quality is effectively guaranteed.
The waterless floor heating system adopts a split design, namely the capillary copper pipe and the outdoor main machine are split, high-temperature refrigerants can be directly condensed and heat-exchanged in indoor floors, expensive intermediate heat exchange equipment is not needed, a large number of water channel parts are saved, the cost performance is high, and the initial investment is reduced by more than 30% compared with that of a conventional machine under the same condition.
Compared with a partial heating mode, the waterless floor heating fully utilizes the huge heat storage capacity of the floor to form an oversized condensation space, and the stability of the condensation working condition is ensured; and a secondary heat exchange process is not needed, so that the energy efficiency ratio is greatly improved.
However, the heat exchanger of the outdoor unit of the waterless floor heating system frosts in the using process, and part of heat of the heat exchanger is directly dissipated and cannot be utilized.
Disclosure of Invention
In view of the above problems, the present invention provides a waterless floor heating heat recovery control method, which effectively solves the problems pointed out in the background art.
The technical scheme adopted by the invention is as follows:
a waterless floor heating heat recovery control method comprises an indoor unit and an outdoor unit, wherein a first heat exchanger and a second heat exchanger which are connected in series are arranged in the outdoor unit, an outdoor electronic expansion valve is arranged between the first heat exchanger and the second heat exchanger, a fan is arranged in the outdoor unit, air sucked out by the fan passes through the first heat exchanger and the second heat exchanger, and when the waterless floor heating is used for heating, the heat recovery control method comprises the following specific steps: after heat is released by each indoor unit, a high-temperature and high-pressure refrigerant firstly enters the second heat exchanger and then enters the first heat exchanger after being throttled by the outdoor electronic expansion valve, and meanwhile, the waste heat on the second heat exchanger is transferred to the first heat exchanger by the air generated by the fan, so that the first heat exchanger absorbs the heat of the second heat exchanger.
Preferably, when the system high pressure is more than or equal to 2.8Mpa, the system low pressure is judged, when the low pressure is more than or equal to 0.9Mpa, the operation frequency of the compressor in the outdoor unit is reduced by 2hz, the judgment is carried out again after 1-3 minutes, if the low pressure is still more than or equal to 0.9Mpa, the operation frequency of the compressor in the outdoor unit is reduced by 2hz again, the judgment is carried out again after 1-3 minutes, the operation is carried out in a circulating mode until the system low pressure is more than or equal to 0.7 Mpa and more than or equal to 0.5Mpa, and the compressor frequency of the outdoor unit is kept unchanged.
According to the invention, the fan transmits the waste heat of the second heat exchanger to the first heat exchanger, so that the waste heat is recycled, the evaporation pressure of the system is improved, the frosting of the first heat exchanger can be inhibited, meanwhile, the heat exchange efficiency of the outdoor unit is improved, the running frequency of a compressor of the outdoor unit can be reduced, and the purpose of energy conservation is achieved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The invention is described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Example 1
In a heating mode, as shown in fig. 1, the waterless floor heating control method includes an indoor unit 1 and an outdoor unit 2, a first heat exchanger 3 and a second heat exchanger 4 which are connected in series are arranged in the outdoor unit 2, an outdoor electronic expansion valve 5 is arranged between the first heat exchanger 3 and the second heat exchanger 4, a fan 6 is arranged in the outdoor unit 2, air sucked out by the fan 6 passes through the first heat exchanger (3) and the second heat exchanger (4), and when the waterless floor heating is used for heating, the heat recovery control method includes the following specific steps: after heat is released by the indoor unit 1, a high-temperature and high-pressure refrigerant firstly enters the second heat exchanger 4, then enters the first heat exchanger 3 after being throttled by the outdoor electronic expansion valve 5, and meanwhile, the wind generated by the fan 6 transfers waste heat on the second heat exchanger 4 to the first heat exchanger 3, so that the first heat exchanger 3 absorbs the heat of the second heat exchanger 4.
When the high pressure of the system is more than or equal to 2.8Mpa, judging the low pressure of the system, when the low pressure is more than or equal to 0.9Mpa, reducing the running frequency of the compressor in the outdoor unit 2 by 2hz, judging again after 1-3 minutes, if the low pressure is still more than or equal to 0.9Mpa, reducing the running frequency of the compressor in the outdoor unit 2 by 2hz again, judging again after 1-3 minutes, executing according to the circulation until the system low pressure is more than or equal to 0.7 and more than or equal to 0.5Mpa PS, and keeping the frequency of the compressor of the outdoor unit 2 unchanged.
Energy saving is achieved by such variable frequency control of the compressor.
Finally, it should be noted that the above-mentioned list is only the specific embodiment of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (2)
1. The waterless floor heating heat recovery control method is characterized by comprising an indoor unit (1) and an outdoor unit (2), wherein a first heat exchanger (3) and a second heat exchanger (4) which are connected in series are arranged in the outdoor unit (2), an outdoor electronic expansion valve (5) is arranged between the first heat exchanger (3) and the second heat exchanger (4), a fan (6) is arranged in the outdoor unit (2), air sucked out by the fan (6) passes through the first heat exchanger (3) and the second heat exchanger (4), and when the waterless floor heating is used for heating, the heat recovery control method comprises the following specific steps: after heat of each indoor unit (1) of a room is released, a high-temperature and high-pressure refrigerant firstly enters the second heat exchanger (4) and then enters the first heat exchanger (3) after being throttled by the outdoor electronic expansion valve (5), and meanwhile, the wind generated by the fan (6) transfers waste heat on the second heat exchanger (4) to the first heat exchanger (3), so that the first heat exchanger (3) absorbs the heat of the second heat exchanger (4).
2. The waterless floor heating heat recovery control method of claim 1, wherein the low pressure of the system is determined when the high pressure of the system is 2.8Mpa or more, the operating frequency of the compressor in the outdoor unit (2) is decreased by 2hz when the low pressure is 0.9Mpa or more, the operation frequency is determined again after 1-3 minutes, if the low pressure is still 0.9Mpa or more, the operating frequency of the compressor in the outdoor unit (2) is decreased by 2hz again, the operation frequency is determined again after 1-3 minutes, and the operation is performed according to the cycle until the system low pressure is 0.7 PS ≥ 0.5Mpa, and the compressor frequency of the outdoor unit (2) is kept unchanged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011639125.0A CN112762508A (en) | 2020-12-31 | 2020-12-31 | Waterless floor heating heat recovery control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011639125.0A CN112762508A (en) | 2020-12-31 | 2020-12-31 | Waterless floor heating heat recovery control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112762508A true CN112762508A (en) | 2021-05-07 |
Family
ID=75698329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011639125.0A Pending CN112762508A (en) | 2020-12-31 | 2020-12-31 | Waterless floor heating heat recovery control method |
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| Country | Link |
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| CN (1) | CN112762508A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020174673A1 (en) * | 2001-05-22 | 2002-11-28 | Ken Wilkinson | Heat pump with supplemental heat source |
| CN200982766Y (en) * | 2006-12-07 | 2007-11-28 | 郭建毅 | Modified air supply heat pump water heater and air conditioner |
| CN101413739A (en) * | 2008-02-04 | 2009-04-22 | 吴雅琪 | Double-effect heat pump circulation three-effect heat exchanger |
| CN102927651A (en) * | 2011-08-11 | 2013-02-13 | 青岛海信日立空调系统有限公司 | Water temperature self-adaptive water source air conditioning system and control method thereof |
| CN103335463A (en) * | 2013-07-08 | 2013-10-02 | 上海交通大学 | Area-separated and functionalized defrosting system of heat pump type air cooled air conditioner |
| CN204006855U (en) * | 2014-06-06 | 2014-12-10 | 平武臣 | A kind of heat pump heat exchanging system with defrosting dehumidification function |
| CN109458683A (en) * | 2018-10-16 | 2019-03-12 | 宁波工程学院 | Dry type radiant heat pump and modular point of family air conditioner integrated machine and its control method |
| CN109579348A (en) * | 2018-12-04 | 2019-04-05 | 宁波工程学院 | The multi-functional multi-joint dry type capillary radiation heat pump unit of one kind and its control method |
| CN109595849A (en) * | 2018-12-24 | 2019-04-09 | 珠海格力电器股份有限公司 | The Defrost method of heat-exchange system, air-conditioning system and air-conditioning system |
| CN111412701A (en) * | 2020-03-27 | 2020-07-14 | 代秀平 | High-pressure waste heat defrosting system of air source heat pump |
| CN111520894A (en) * | 2020-07-03 | 2020-08-11 | 宁波奥克斯电气股份有限公司 | Output control method and device for air conditioner compressor, air conditioner and storage medium |
-
2020
- 2020-12-31 CN CN202011639125.0A patent/CN112762508A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020174673A1 (en) * | 2001-05-22 | 2002-11-28 | Ken Wilkinson | Heat pump with supplemental heat source |
| CN200982766Y (en) * | 2006-12-07 | 2007-11-28 | 郭建毅 | Modified air supply heat pump water heater and air conditioner |
| CN101413739A (en) * | 2008-02-04 | 2009-04-22 | 吴雅琪 | Double-effect heat pump circulation three-effect heat exchanger |
| CN102927651A (en) * | 2011-08-11 | 2013-02-13 | 青岛海信日立空调系统有限公司 | Water temperature self-adaptive water source air conditioning system and control method thereof |
| CN103335463A (en) * | 2013-07-08 | 2013-10-02 | 上海交通大学 | Area-separated and functionalized defrosting system of heat pump type air cooled air conditioner |
| CN204006855U (en) * | 2014-06-06 | 2014-12-10 | 平武臣 | A kind of heat pump heat exchanging system with defrosting dehumidification function |
| CN109458683A (en) * | 2018-10-16 | 2019-03-12 | 宁波工程学院 | Dry type radiant heat pump and modular point of family air conditioner integrated machine and its control method |
| CN109579348A (en) * | 2018-12-04 | 2019-04-05 | 宁波工程学院 | The multi-functional multi-joint dry type capillary radiation heat pump unit of one kind and its control method |
| CN109595849A (en) * | 2018-12-24 | 2019-04-09 | 珠海格力电器股份有限公司 | The Defrost method of heat-exchange system, air-conditioning system and air-conditioning system |
| CN111412701A (en) * | 2020-03-27 | 2020-07-14 | 代秀平 | High-pressure waste heat defrosting system of air source heat pump |
| CN111520894A (en) * | 2020-07-03 | 2020-08-11 | 宁波奥克斯电气股份有限公司 | Output control method and device for air conditioner compressor, air conditioner and storage medium |
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Application publication date: 20210507 |