CN103673295A - Directly-heated water tank heating water flow path system and control method thereof - Google Patents
Directly-heated water tank heating water flow path system and control method thereof Download PDFInfo
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- CN103673295A CN103673295A CN201210328179.4A CN201210328179A CN103673295A CN 103673295 A CN103673295 A CN 103673295A CN 201210328179 A CN201210328179 A CN 201210328179A CN 103673295 A CN103673295 A CN 103673295A
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- water
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- way valve
- flow path
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 256
- 239000008236 heating water Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000008399 tap water Substances 0.000 claims abstract description 16
- 235000020679 tap water Nutrition 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000005485 electric heating Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 claims 2
- 239000003507 refrigerant Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a directly-heated water tank heating water flow path system, which comprises a water tank, a heat exchanger, a connecting pipeline, a circulating water pump, a temperature sensor, a control system and a three-way valve, wherein the water tank, the circulating water pump connected with the water tank, the heat exchanger and an inlet of the three-way valve are sequentially connected, and a first outlet and a second outlet of the three-way valve are respectively connected with the upper part and the lower part of the water tank; the upper part of the water tank is also provided with a water outlet used for connecting a hot water outlet pipe, and the lower part of the water tank is also provided with a water inlet used for connecting a tap water supply pipe. A control method is also disclosed. The invention reduces the influence of cold water and warm water from the heat exchanger on hot water at the upper part of the water tank in the starting-up stage, avoids the fluctuation of the outlet water temperature of the water tank due to starting-up and improves the comfort of water use.
Description
Technical Field
The invention relates to the field of heat exchange, in particular to a directly-heated water tank heating water flow path system and a control method thereof.
Background
The existing directly-heated water tank directly leads hot water coming out of the heat exchanger into the upper part of the water tank, so that the following defects exist in the starting-up stage: the water outlet temperature of the heat exchanger of the unit is in the process of gradually rising at the stage of starting the unit, namely cold water and warm water come out of the heat exchanger when the unit is started, and the direct introduction of the water into the upper part of the water tank can certainly affect the hot water on the upper part of the water tank, further affect the water outlet temperature of the water tank and affect the comfort of water consumption.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a directly-heated water tank heating water flow path system with simple structure and reasonable design and a control method thereof, which avoid the fluctuation of the outlet water temperature of a water tank due to starting up, and adopts the technical scheme for realizing the purposes that:
a directly-heated water tank heating water flow path system comprises a water tank, a circulating water pump, a heat exchanger, a connecting pipeline, a temperature sensing bulb, a control system and a three-way valve, wherein the water tank, the circulating water pump connected with the water tank, the heat exchanger and an inlet of the three-way valve are sequentially connected, and a first outlet and a second outlet of the three-way valve are respectively communicated with the upper part and the lower part of the water tank;
the upper part of the water tank is also provided with a water outlet used for connecting a hot water outlet pipe, and the lower part of the water tank is also provided with a water inlet used for connecting a tap water supply pipe.
Preferably, the three-way valve is an electromagnetic three-way valve, an electric three-way valve or an electric three-way valve.
Preferably, the tap water supply pipe is communicated with a water inlet pipe of the circulating water pump through a three-way joint.
Preferably, the number of the water tanks is two, the two water tanks are respectively a first water tank and a second water tank, the two water tanks are connected in series, and the first water tank and the second water tank are communicated through a communicating pipe;
a first outlet of the three-way valve is communicated with the upper part of the second water tank, and a second outlet of the three-way valve is communicated with the lower part of the first water tank;
the hot water outlet pipe is arranged at the upper part of the second water tank, and the lower part of the first water tank is connected with a water supply pipe of tap water.
Preferably, the tap water supply pipe is communicated with a water inlet pipe of the circulating water pump through a three-way joint.
Preferably, the circulating water pump is a variable frequency water pump.
Preferably, the circulating water pump is a constant rotating speed water pump, and the water pipeline is provided with a flow regulating valve.
Preferably, the water inlet pipe of the circulating water pump is connected with the lower part of the water tank.
Preferably, the heat source of the heat exchanger is at least one of electric heating, an air-source heat pump and solar energy.
The control method of the directly-heated water tank heating water flow path system with any technical characteristics comprises a water tank upper water inlet step and a water tank lower water inlet step;
the step of feeding hot water into the upper part of the water tank comprises the following steps: when the temperature of the outlet water of the heat exchanger is higher than or equal to a set temperature value, a first outlet of the three-way valve is opened, a second outlet of the three-way valve is closed, and the outlet water of the heat exchanger is guided into the water tank from the upper part of the water tank through the three-way valve;
the water inlet step at the lower part of the water tank comprises the following steps: when the outlet water temperature of the heat exchanger is lower than a set temperature value, the first outlet of the three-way valve is closed, the second outlet of the three-way valve is opened, and the outlet water of the heat exchanger is drained into the water tank from the lower part of the water tank through the three-way valve.
Preferably, the set temperature value is 35-60 ℃.
The invention has the beneficial effects that: the three-way valve controls the position of the water outlet of the heat exchanger entering the water tank, so that the influence of cold water and warm water discharged from the heat exchanger on hot water on the upper part of the water tank in the starting stage can be reduced, the fluctuation of the water outlet temperature of the water tank due to starting is avoided, and the comfort of water use is improved.
Drawings
FIG. 1 is a schematic view of an embodiment of a direct-heating water tank heating water flow system of the present invention;
FIG. 2 is a schematic view of the directly heated water tank heating water flow path system shown in FIG. 1 connected to a tap water supply pipe by a three-way joint;
FIG. 3 is a schematic view of an embodiment of a directly-heated water tank heating flow path system of the present invention with two water tanks; wherein,
1, a water tank; 11-15 of a temperature sensing bulb; 2, a variable frequency water pump; 3, a heat exchanger; 31 a refrigerant inlet;
32 a refrigerant outlet; 4, an electromagnetic three-way valve; 5, a water outlet temperature sensing bulb of the heat exchanger; 6, a hot water outlet pipe;
7 a tap water supply pipe; 8, communicating pipes; 9 auxiliary water tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following will take air energy heat pump heat supply as an example to further explain the directly-heated water tank heating water flow path system and the control method thereof in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, an embodiment of a directly-heated water tank heating water flow path system of the present invention includes a water tank 1, a circulating water pump 2, a heat exchanger 3, a three-way valve 4, a connecting pipeline, a thermal bulb, and a control system (not shown), wherein the water tank 1, the circulating water pump 2 connected to the lower portion of the water tank 1, the heat exchanger 3, and an inlet of the three-way valve 4 are sequentially connected, and a first outlet (B) and a second outlet (a) of the three-way valve 4 are respectively connected to the upper portion and the lower portion of the water tank 1; the upper part of the water tank 1 is provided with a water outlet which is used for being connected with a hot water outlet pipe 6, and the lower part of the water tank 1 is provided with a water inlet which is used for being communicated with a running water supply pipe 7; five temperature sensing bags (11, 12, 13, 14, 15) arranged in the water tank 1 are used for measuring the water temperatures at different heights in the water tank 1, and the heat exchanger water outlet temperature sensing bag 5 is used for measuring the water outlet temperature of the heat exchanger 3.
The heat exchanger 3 is connected with a throttling device (not shown), an evaporator (not shown) and a compressor (not shown) in sequence to form a refrigerating system, when the refrigerating system works, a refrigerant enters the heat exchanger 3 from a refrigerant inlet 31 and flows out from a refrigerant outlet 32 after exchanging heat with the heat exchanger 3, and a heat source of the heat exchanger 3 can also adopt electric heating or solar energy or a mixed heat source.
A water inlet pipe of the circulating water pump 2 is connected with the lower part of the water tank 1, when the circulating water pump works, water at the lower part in the water tank 1 is pumped to the heat exchanger 3 to exchange heat with the heat exchanger 3, the water flows into an inlet of the three-way valve 4 after being heated at the heat exchanger 3 and then returns to the water tank 1 through a first outlet (B) or a second outlet (A) of the three-way valve 4, and preferably, the circulating water pump 2 is a variable frequency water pump; of course, the circulating water pump 2 may also be a fixed-speed water pump (fixed-frequency water pump), and a flow control valve (not shown) is provided on the water line for use in cooperation with the fixed-speed water pump, thereby also realizing a flow control function.
The three-way valve 4 is an electromagnetic three-way valve, an electric three-way valve or an electric three-way valve, a first outlet (B) of the three-way valve 4 is normally closed, a second outlet (A) of the three-way valve 4 is normally open, namely when the three-way valve 4 is not electrified, an inlet of the three-way valve 4 is communicated with the second outlet (A), and the first outlet (B) of the three-way valve 4 is closed; when the three-way valve 4 is electrified, the inlet of the three-way valve 4 is communicated with the first inlet (B) of the three-way valve 4, and the second outlet (B) of the three-way valve 4 is closed;
preferably, as an embodiment, the tap water supply pipe 7 is connected to the water inlet pipe of the circulating water pump 2 by a three-way joint, as shown in fig. 2, tap water flowing out of the tap water supply pipe 7 can directly enter the water tank 1 or enter the circulating water pump 2,
the control method of the directly-heated water tank heating water flow path system comprises a step of feeding hot water into the upper part of the water tank and a step of feeding hot water into the lower part of the water tank;
the step of feeding hot water into the upper part of the water tank comprises the following steps: when the outlet water temperature of the heat exchanger 3 is higher than or equal to a set temperature value, the control system enables the three-way valve 4 to be powered on, at the moment, a first outlet (B) of the three-way valve 4 is opened, a second outlet (A) of the three-way valve 4 is closed, and the outlet water of the heat exchanger 4 is drained into the water tank 1 from the upper part of the water tank 1 through the three-way valve 4;
the water inlet step at the lower part of the water tank comprises the following steps: when the water tank is started or the water outlet temperature of the heat exchanger 3 is lower than a set temperature value, the control system enables the three-way valve 4 not to be electrified, the first outlet (B) of the three-way valve is closed, the second outlet (A) of the three-way valve is opened, and the water outlet of the heat exchanger 3 is drained into the water tank 1 from the lower part of the water tank 1 through the three-way valve 4.
Preferably, the set temperature value is 35 ℃ to 60 ℃.
Preferably, as another possible implementation, as shown in fig. 3, the difference from the above embodiment is that: the number of the water tanks is two, namely the water tank 1 and the auxiliary water tank 9, the water tank 1 and the auxiliary water tank 9 are connected in series, the water tank 1 and the auxiliary water tank 9 are communicated through a communicating pipe 8, a first outlet (B) of a three-way valve 4 is communicated with the upper part of the auxiliary water tank 9, and a second outlet (A) of the three-way valve 4 is communicated with the lower part of the water tank 1; the hot water outlet pipe 6 is arranged at the upper part of the auxiliary water tank 9; the water tank 1 is provided with two temperature sensing bags (13, 14), and the auxiliary water tank 9 is also provided with two high temperature bags (11, 12) which are respectively used for measuring the water temperature in the respective water tank. The lower part of the water tank 1 is communicated with a tap water supply pipe 7, certainly the tap water supply pipe 7 can also be communicated with a water inlet pipe of the circulating water pump 2 through a three-way joint, and the control method is completely the same as the above embodiment, namely when the water tank is started or the outlet water temperature of the heat exchanger 3 is lower than a certain temperature value, the outlet water of the heat exchanger 3 is introduced into the lower part of the water tank 1, and the outlet water of the heat exchanger 3 is switched to the upper part of the auxiliary water tank 9 through the three-way valve 4 after the outlet water temperature of the heat.
The above embodiment can avoid the influence of cold water and warm water coming out of the heat exchanger on hot water at the upper part of the water tank in the starting-up stage, ensure that the outlet water temperature of the water tank is not fluctuated due to the starting-up of the unit, and improve the comfort of water use.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
1. The utility model provides a directly-heated type water tank adds hydrothermal flow path system, includes water tank, circulating water pump, heat exchanger, connecting line, temperature sensing package and control system, its characterized in that:
the water tank, the circulating water pump connected with the water tank, the heat exchanger and the inlet of the three-way valve are sequentially connected, and a first outlet and a second outlet of the three-way valve are respectively communicated with the upper part and the lower part of the water tank;
the upper part of the water tank is also provided with a water outlet used for connecting a hot water outlet pipe, and the lower part of the water tank is also provided with a water inlet used for connecting a tap water supply pipe.
2. The direct heating type water tank heating water flow path system according to claim 1, characterized in that:
the three-way valve is an electromagnetic three-way valve, an electric three-way valve or an electric three-way valve.
3. The direct heating type water tank heating water flow path system according to claim 1 or 2, characterized in that:
the tap water supply pipe is communicated with a water inlet pipe of the circulating water pump through a tee joint.
4. The direct heating type water tank heating water flow path system according to claim 1 or 2, characterized in that:
the water tanks are respectively a first water tank and a second water tank, the two water tanks are connected in series, and the first water tank and the second water tank are communicated through a communicating pipe;
a first outlet of the three-way valve is communicated with the upper part of the second water tank, and a second outlet of the three-way valve is communicated with the lower part of the first water tank;
the hot water outlet pipe is arranged at the upper part of the second water tank, and the lower part of the first water tank is connected with a water supply pipe of tap water.
5. The direct-heating water tank heating water flow path system according to claim 4, characterized in that:
the tap water supply pipe is communicated with a water inlet pipe of the circulating water pump through a tee joint.
6. The direct heating type water tank heating water flow path system according to claim 1 or 2, characterized in that:
the circulating water pump is a variable frequency water pump.
7. The direct heating type water tank heating water flow path system according to claim 1 or 2, characterized in that:
the circulating water pump is a water pump with a fixed rotating speed, and a flow regulating valve is arranged on the water pipeline.
8. The direct heating type water tank heating water flow path system according to claim 1 or 2, characterized in that:
and a water inlet pipe of the circulating water pump is connected with the lower part of the water tank.
9. The direct heating type water tank heating water flow path system according to claim 1 or 2, characterized in that:
the heat source of the heat exchanger is at least one of electric heating, an air energy heat pump and solar energy.
10. A method for controlling a direct-heating type tank heating water flow path system according to any one of claims 1 to 9, characterized in that:
comprises a step of feeding hot water into the upper part of a water tank and a step of feeding hot water into the lower part of the water tank;
the step of feeding hot water into the upper part of the water tank comprises the following steps: when the temperature of the outlet water of the heat exchanger is higher than or equal to a set temperature value, a first outlet of the three-way valve is opened, a second outlet of the three-way valve is closed, and the outlet water of the heat exchanger is guided into the water tank from the upper part of the water tank through the three-way valve;
the water inlet step at the lower part of the water tank comprises the following steps: when the outlet water temperature of the heat exchanger is lower than a set temperature value, the first outlet of the three-way valve is closed, the second outlet of the three-way valve is opened, and the outlet water of the heat exchanger is drained into the water tank from the lower part of the water tank through the three-way valve.
11. The method for controlling a direct-heating-type-tank heating water flow path system according to claim 10, characterized in that:
the set temperature value is 35-60 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210328179.4A CN103673295A (en) | 2012-09-06 | 2012-09-06 | Directly-heated water tank heating water flow path system and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210328179.4A CN103673295A (en) | 2012-09-06 | 2012-09-06 | Directly-heated water tank heating water flow path system and control method thereof |
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| CN103673295A true CN103673295A (en) | 2014-03-26 |
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| CN201210328179.4A Pending CN103673295A (en) | 2012-09-06 | 2012-09-06 | Directly-heated water tank heating water flow path system and control method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482328A (en) * | 2015-08-31 | 2017-03-08 | 青岛海尔智能技术研发有限公司 | Quick-acting water heater and its control method |
| CN109237781A (en) * | 2018-09-19 | 2019-01-18 | 珠海格力电器股份有限公司 | Water heater, heat pump system and control method of water heater |
| CN110486939A (en) * | 2019-07-29 | 2019-11-22 | 四季沐歌科技集团有限公司 | A kind of air energy constant temperature and pressure hot-water heating system and its control method |
| CN112728760A (en) * | 2020-12-31 | 2021-04-30 | 广东万和新电气股份有限公司 | Water storage type water heater system and control method |
| WO2021227538A1 (en) * | 2020-05-09 | 2021-11-18 | 江苏苏净集团有限公司 | Constant-temperature water supply system employing carbon dioxide heat pump, and control method therefor |
| CN115200256A (en) * | 2022-09-16 | 2022-10-18 | 北京环都拓普空调有限公司 | Solar heat pump system and control method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482328A (en) * | 2015-08-31 | 2017-03-08 | 青岛海尔智能技术研发有限公司 | Quick-acting water heater and its control method |
| CN106482328B (en) * | 2015-08-31 | 2023-04-07 | 青岛海尔智能技术研发有限公司 | Quick-heating water heater and control method thereof |
| CN109237781A (en) * | 2018-09-19 | 2019-01-18 | 珠海格力电器股份有限公司 | Water heater, heat pump system and control method of water heater |
| CN110486939A (en) * | 2019-07-29 | 2019-11-22 | 四季沐歌科技集团有限公司 | A kind of air energy constant temperature and pressure hot-water heating system and its control method |
| WO2021227538A1 (en) * | 2020-05-09 | 2021-11-18 | 江苏苏净集团有限公司 | Constant-temperature water supply system employing carbon dioxide heat pump, and control method therefor |
| CN112728760A (en) * | 2020-12-31 | 2021-04-30 | 广东万和新电气股份有限公司 | Water storage type water heater system and control method |
| CN115200256A (en) * | 2022-09-16 | 2022-10-18 | 北京环都拓普空调有限公司 | Solar heat pump system and control method thereof |
| CN115200256B (en) * | 2022-09-16 | 2023-01-24 | 北京环都拓普空调有限公司 | Solar heat pump system and control method thereof |
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Application publication date: 20140326 |