CN112503649A - Multi-split system capable of heating domestic water and having floor heating function - Google Patents
Multi-split system capable of heating domestic water and having floor heating function Download PDFInfo
- Publication number
- CN112503649A CN112503649A CN202011378833.3A CN202011378833A CN112503649A CN 112503649 A CN112503649 A CN 112503649A CN 202011378833 A CN202011378833 A CN 202011378833A CN 112503649 A CN112503649 A CN 112503649A
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- Prior art keywords
- heating
- domestic water
- water tank
- floor heating
- air pipe
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
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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
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or 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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
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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
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The multi-split system with the hydraulic module has floor heating and domestic hot water. In the multi-split system, as the water temperature of the domestic hot water gradually rises, the exhaust pressure and the exhaust temperature also rise, and dynamic interference is introduced into the multi-split system due to the rising of the exhaust pressure and the exhaust temperature, so that the basic functions of the multi-split system of refrigeration and heating are impacted, and negative effects are brought. The floor heating system and the domestic hot water tank are respectively connected to the intermediate heat exchanger through connection, and the refrigerant of the multi-split air conditioner is utilized to carry out primary heating on the water in the domestic hot water tank, so that the water in the domestic hot water tank is preheated to a certain temperature, and meanwhile, the floor heating system can realize the heating and warm-keeping effects on a room; and the heat pump unit is used for additionally heating the domestic hot water tank in a secondary mode, so that the heat pump unit can bear dynamic interference of domestic hot water due to rising of water temperature, the operation of a large multi-connected unit is not influenced, and higher water temperature is achieved.
Description
Technical Field
The invention relates to the technical field of integration of a water heater and a multi-split air conditioner, in particular to a multi-split system which can heat domestic water and is provided with a floor for heating.
Background
At present, an enhanced vapor injection multi-split air conditioner with a hydraulic module is widely applied to cold regions, and the multi-split air conditioner system has floor heating and domestic hot water. The water temperature of floor heating is 40-45 ℃, the temperature generally required by domestic hot water is 55-80 ℃, namely the temperature required by the domestic hot water is higher, so that the problems of overhigh exhaust pressure of a multi-connected air conditioner and overhigh temperature of the multi-connected air conditioner system are easily caused, in addition, the domestic hot water needs to be circularly heated between a heat pump and a water tank, in the multi-connected air conditioner system, along with the gradual rise of the water temperature of the domestic hot water, the exhaust pressure and the exhaust temperature are also along with the rise, the rise of the exhaust pressure and the exhaust temperature introduces dynamic interference into most of the on-line systems, the basic functions of most of the on-line refrigeration and heating are impacted, and negative.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a multi-split system which can heat domestic water and is provided with a floor heating function.
In order to achieve the aim, the scheme provided by the invention is a multi-split air conditioner with closed floor heating, which can heat domestic water and comprises a multi-split indoor unit, a multi-split outdoor unit, an intermediate heat exchanger, a floor heating system, a domestic water tank and a heat pump unit; the multi-connected indoor unit further comprises a first liquid pipe, a first air pipe and a second air pipe, wherein two ends of the first liquid pipe are respectively connected with one end of the multi-connected indoor unit and one end of the multi-connected outdoor unit; one end of the first air pipe and one end of the second air pipe are connected to the other end of the multi-connected indoor unit in parallel; the other end of the first air pipe and the other end of the second air pipe are connected to the other end of the multi-connected outdoor unit in parallel, the multi-connected outdoor unit further comprises a second liquid pipe and a third air pipe, the intermediate heat exchanger is respectively connected to the second air pipe and the first liquid pipe through the third air pipe and the second liquid pipe, and a refrigerant flows into the intermediate heat exchanger to perform heat exchange; the domestic water tank is connected to the intermediate heat exchanger through two pipelines, so that the water in the domestic water tank exchanges heat in the intermediate heat exchanger; the water in the domestic water tank is subjected to primary heating through heat exchange in the intermediate heat exchanger by a refrigerant in a system operation heating mode; the heat pump unit is connected to the domestic water tank through two pipelines to carry out secondary heating on the water in the domestic water tank.
The system comprises a floor heating system, a heat exchanger, a water pump; and through a system operation heating mode, the refrigerant is subjected to primary heating on the water in the domestic water tank through heat exchange in the intermediate heat exchanger.
Further, the water in the domestic water tank and the water in the floor heating system are heated to be close to 45 ℃ through primary heating.
Further, the water in the domestic water tank is heated to 55-80 ℃ through secondary heating.
Further, the first air pipe and the second air pipe are provided with a first stop valve and a second stop valve respectively.
Further, when the system is in a heating mode, the first stop valve is closed.
Further, when the system is in the cooling mode, the second stop valve is closed.
Further, the first air pipe is a low-pressure air pipe; the second air pipe is a high-pressure air pipe.
Furthermore, a water replenishing device is connected to the domestic water tank to provide tap water.
Further, the domestic water tank is also connected to the domestic water system.
The invention has the beneficial effects that: the floor heating system and the domestic hot water tank are respectively connected to the intermediate heat exchanger through connection, the refrigerant of the multi-split air conditioner is utilized to carry out primary heating on the water in the domestic hot water tank to about 45 ℃, and the water after primary heating can be directly used for floor heating on one hand, so that the floor heating system can realize the heating and warm-keeping effects on rooms; on the other hand, the water after the first-stage heating can be guided into a domestic hot water tank to be used as a domestic hot water preheating stage, and then the domestic hot water tank is subjected to second-stage heating through another heat pump unit, so that the temperature of the domestic hot water is further increased to be more than 55 ℃. The two-stage heating of the heat pump unit can bear the dynamic interference of domestic hot water caused by the rising of water temperature, does not influence the stable and efficient operation of a large multi-connected unit, and can realize the respective preparation of floor heating hot water at about 45 ℃ and domestic hot water above 55 ℃.
Drawings
Fig. 1 is a schematic diagram of a multi-split system.
The system comprises a multi-connected outdoor unit, 11-a first liquid pipe, 12-a first air pipe, 121-a first stop valve, 13-a second air pipe, 131-a second stop valve, 2-a multi-connected indoor unit, 3-an intermediate heat exchanger, 31-a third air pipe, 32-a second liquid pipe, 4-a floor heating system, 5-a living water tank, 6-a heat pump unit, 7-a living water system and 8-a water supplementing device.
Detailed Description
To facilitate an understanding of the invention, the invention is described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1, in the present embodiment, a multi-split air-conditioning system capable of heating domestic water and heating a floor includes a multi-split indoor unit 2, an intermediate heat exchanger 3, a floor heating system 4, a domestic water tank 5, a heat pump unit 6, a first air pipe 12 and a second air pipe 13, wherein the first air pipe 12 is a low-pressure air pipe, the second air pipe 13 is a high-pressure air pipe, and the first air pipe 12 and the second air pipe 13 are respectively provided with a first stop valve 121 and a second stop valve 131. One end of the multi-connected outdoor unit 1 is connected with one end of the multi-connected indoor unit 2 through a first liquid pipe 11; one end of the first air pipe 12 and one end of the second air pipe 13 are connected in parallel to the other end of the multi-connected indoor unit 2; the other end of the first air pipe 12 and the other end of the second air pipe 13 are connected in parallel to the other end of the multi-connected outdoor unit 1.
Referring to fig. 1, in the present embodiment, a third gas pipe 31 and a second liquid pipe 32 are further included, wherein the intermediate heat exchanger 3 is connected to the second gas pipe 13 and the first liquid pipe 11 through the third gas pipe 31 and the second liquid pipe 32, respectively, so that the refrigerant flows into the intermediate heat exchanger 3 for heat exchange; the floor heating system 4 is connected to the intermediate heat exchanger 3 through two pipelines, so that water of the floor heating system 4 exchanges heat with the refrigerant through the intermediate heat exchanger 3; the domestic water tank 5 is connected to the intermediate heat exchanger 3 through two pipelines, so that water in the domestic water tank 5 passes through the intermediate heat exchanger 3 to exchange heat with the refrigerant. The heat pump unit 6 is connected to the domestic water tank 5 through two pipelines to carry out secondary heating on the water in the domestic water tank 5; the water in the living water tank 5 is heated by the heat pump unit 6 in a secondary mode, so that the exhaust pressure rise and the working condition temperature rise caused by the water temperature rise only occur between the heat pump unit 6 and the living water tank 5, the heat pump unit 6 is enabled to bear dynamic interference caused by the exhaust pressure rise and the working condition temperature rise, and the water in the living water tank 5 is enabled to be heated to a higher water temperature under the condition that the operation of a large multi-connected unit is not influenced.
In this embodiment, the water replenishing device 8 is connected to the domestic water tank 5 through a pipeline to supply tap water to the domestic water tank 5; the domestic water tank 5 is connected to the domestic water system 7 via a pipe.
In this example, when the application scenario of the present invention is in winter, the weather is cold, hot water needs to be prepared and is introduced into the floor heating system 4, and the system operates in a heating mode, the first stop valve 121 is closed, the second stop valve 131 is opened, so that high-pressure and high-temperature refrigerants respectively flow from the multi-outdoor unit 1 to the multi-indoor unit 2 and the intermediate heat exchanger 3 through the second air pipe 13 and the third air pipe 31, respectively, wherein the high-pressure and high-temperature refrigerants respectively perform primary heating on water in the domestic water tank 5 and water in the floor heating system 4 through heat exchange in the intermediate heat exchanger 3, and the water in the domestic water tank 5 and the water in the floor heating system 4 are gradually heated to approximately 45 ℃ through the primary heating, so that the floor heating system 4 can replace an indoor heater to. Further, the water in the domestic water tank 5 is heated by the heat pump unit 6 in a secondary mode, so that the temperature of the water in the domestic water tank 5 can be gradually increased to 55 ℃ to 80 ℃. Further, the refrigerant in the intermediate heat exchanger 3 flows to the multi-outdoor unit 1 through the second liquid pipe 32 after heat exchange; the refrigerant in the multi-connected indoor unit 2 is condensed to release heat and then flows to the multi-connected outdoor unit 1 through the first liquid pipe 11.
In this embodiment, when the application scenario of the present invention is summer and the weather is hot, hot water does not need to be prepared and is introduced into the floor heating system 4, and the system operates in the refrigeration mode, the first stop valve 121 is opened, and the second stop valve 131 is closed, so that the refrigerant cannot flow to the multi-outdoor unit 1 through the second air pipe 13. A part of low-temperature refrigerant flows from the multi-connected outdoor unit 1 to the multi-connected indoor units 2 through the first liquid pipe 11 to evaporate and absorb heat, and then flows from the multi-connected indoor units 2 to the multi-connected outdoor unit 1 through the first liquid pipe 12; another part of low-temperature refrigerant flows from the multi-unit outdoor unit 1 to the intermediate heat exchanger 3 through the first liquid pipe 11 and the second liquid pipe 32 in sequence, the part of refrigerant is subjected to heat exchange in the intermediate heat exchanger 3 to be heated to normal temperature, and then the part of refrigerant flows from the intermediate heat exchanger 3 to the multi-unit outdoor unit 1 through the third gas pipe 31 and the first gas pipe 12 in sequence. At the moment, if hot water is required to be supplied to the domestic water system 7, the water in the domestic water tank 5 is directly subjected to secondary heating through the heat pump unit 6, so that the temperature of the water in the domestic water tank 5 is raised to 55-80 ℃.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to limit the present invention in any way. Those skilled in the art can make many changes, modifications, and equivalents to the embodiments of the invention without departing from the scope of the invention as set forth in the claims below. Therefore, equivalent changes made according to the spirit of the present invention should be covered within the protection scope of the present invention without departing from the contents of the technical scheme of the present invention.
Claims (10)
1. A multi-split system capable of heating domestic water and heating a floor comprises a multi-split indoor unit (2), a multi-split outdoor unit (1), an intermediate heat exchanger (3), a floor heating system (4), a domestic water tank (5) and a heat pump unit (6); the multi-connected indoor unit further comprises a first liquid pipe (11), a first air pipe (12) and a second air pipe (13), wherein two ends of the first liquid pipe (11) are respectively connected with one end of the multi-connected indoor unit (2) and one end of the multi-connected outdoor unit (1); one end of the first air pipe (12) and one end of the second air pipe (13) are connected to the other end of the multi-connected indoor unit (2) in parallel; the other end of the first air pipe (12) and the other end of the second air pipe (13) are connected in parallel to the other end of the multi-connected outdoor unit (1), and the multi-connected outdoor unit is characterized in that: the heat exchanger also comprises a second liquid pipe (32) and a third gas pipe (31), wherein the intermediate heat exchanger (3) is respectively connected to the second gas pipe (13) and the first liquid pipe (11) through the third gas pipe (31) and the second liquid pipe (32), and a refrigerant flows into the intermediate heat exchanger (3) to exchange heat; the domestic water tank (5) is connected to the intermediate heat exchanger (3) through two pipelines, so that the water in the domestic water tank (5) exchanges heat in the intermediate heat exchanger (3); in a system operation heating mode, a refrigerant is subjected to primary heating on water in the domestic water tank (5) in the intermediate heat exchanger (3) through heat exchange; the heat pump unit (6) is connected to the domestic water tank (5) through two pipelines to carry out secondary heating on water in the domestic water tank (5).
2. The multi-split system with floor heating capable of heating domestic water according to claim 1, wherein: the floor heating system is characterized by further comprising a floor heating system (4), wherein the floor heating system (4) is connected to the intermediate heat exchanger (3) through two pipelines, and water of the floor heating system (4) flows into the intermediate heat exchanger (3) to exchange heat; and through a system operation heating mode, the refrigerant is subjected to primary heating on the water in the domestic water tank (5) in the intermediate heat exchanger (3) through heat exchange.
3. A multi-split system with floor heating capable of heating domestic water according to claim 1 or 2, wherein: the water in the domestic water tank (5) and the water in the floor heating system (4) are heated to approximately 45 ℃ by primary heating.
4. The multi-split system with floor heating capable of heating domestic water according to claim 1, wherein: and heating the water in the domestic water tank (5) to 55-80 ℃ by secondary heating.
5. The multi-split system with floor heating capable of heating domestic water according to claim 1, wherein: the first air pipe (12) and the second air pipe (13) are respectively provided with a first stop valve (121) and a second stop valve (131).
6. The multi-split system with floor heating capable of heating domestic water according to claim 5, wherein: when the system is in a heating mode, the first stop valve (121) is closed.
7. The multi-split system with floor heating capable of heating domestic water according to claim 5, wherein: when the system operates in a cooling mode, the second stop valve (131) is closed.
8. The multi-split system with floor heating capable of heating domestic water according to claim 1, wherein: the first air pipe (12) is a low-pressure air pipe; the second air pipe (13) is a high-pressure air pipe.
9. The multi-split system with floor heating capable of heating domestic water according to claim 1, wherein: the water supply device (8) is connected with the domestic water tank (5) to supply tap water.
10. The multi-split system with floor heating capable of heating domestic water according to claim 1, wherein: the domestic water tank (5) is also connected to the domestic water system (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011378833.3A CN112503649A (en) | 2020-12-01 | 2020-12-01 | Multi-split system capable of heating domestic water and having floor heating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011378833.3A CN112503649A (en) | 2020-12-01 | 2020-12-01 | Multi-split system capable of heating domestic water and having floor heating function |
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| Publication Number | Publication Date |
|---|---|
| CN112503649A true CN112503649A (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011378833.3A Pending CN112503649A (en) | 2020-12-01 | 2020-12-01 | Multi-split system capable of heating domestic water and having floor heating function |
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| CN (1) | CN112503649A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551398A (en) * | 2021-03-23 | 2021-10-26 | 珠海格力电器股份有限公司 | Control method of multi-split system, multi-split system and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5332028A (en) * | 1993-03-12 | 1994-07-26 | Carrier Corporation | Method and apparatus for controlling supplemental electric heat during heat pump defrost |
| CN204739788U (en) * | 2015-06-10 | 2015-11-04 | 皇明太阳能股份有限公司 | Heat pump system |
| CN105890225A (en) * | 2015-01-23 | 2016-08-24 | 郑斌 | Partial heat recovery type air conditioner cold hot water and life hot water joint supply system |
| CN109210820A (en) * | 2018-09-13 | 2019-01-15 | 珠海格力电器股份有限公司 | A kind of multifunctional heat pump and its switching method for implementing different function |
| CN208779523U (en) * | 2018-08-13 | 2019-04-23 | 珠海格力电器股份有限公司 | Heat pump unit |
| CN110118447A (en) * | 2019-05-27 | 2019-08-13 | 颜世峰 | A kind of frequency conversion air source heat pump refrigerating heating and water-heating trilogy supply unit |
-
2020
- 2020-12-01 CN CN202011378833.3A patent/CN112503649A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5332028A (en) * | 1993-03-12 | 1994-07-26 | Carrier Corporation | Method and apparatus for controlling supplemental electric heat during heat pump defrost |
| CN105890225A (en) * | 2015-01-23 | 2016-08-24 | 郑斌 | Partial heat recovery type air conditioner cold hot water and life hot water joint supply system |
| CN204739788U (en) * | 2015-06-10 | 2015-11-04 | 皇明太阳能股份有限公司 | Heat pump system |
| CN208779523U (en) * | 2018-08-13 | 2019-04-23 | 珠海格力电器股份有限公司 | Heat pump unit |
| CN109210820A (en) * | 2018-09-13 | 2019-01-15 | 珠海格力电器股份有限公司 | A kind of multifunctional heat pump and its switching method for implementing different function |
| CN110118447A (en) * | 2019-05-27 | 2019-08-13 | 颜世峰 | A kind of frequency conversion air source heat pump refrigerating heating and water-heating trilogy supply unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551398A (en) * | 2021-03-23 | 2021-10-26 | 珠海格力电器股份有限公司 | Control method of multi-split system, multi-split system and storage medium |
| CN113551398B (en) * | 2021-03-23 | 2022-07-15 | 珠海格力电器股份有限公司 | Control method of multi-split system, multi-split system and storage medium |
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| PB01 | Publication | ||
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Application publication date: 20210316 |