CN110056938A - A kind of integrated return water heat-exchanging water tank and its control method - Google Patents
A kind of integrated return water heat-exchanging water tank and its control method Download PDFInfo
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- CN110056938A CN110056938A CN201910297958.4A CN201910297958A CN110056938A CN 110056938 A CN110056938 A CN 110056938A CN 201910297958 A CN201910297958 A CN 201910297958A CN 110056938 A CN110056938 A CN 110056938A
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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
- F24D17/00—Domestic hot-water supply 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
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The present invention relates to a kind of integrated return water heat-exchanging water tank and its control methods, belong to technical field of water heaters.The heat-exchanging water tank includes water tank, heat exchanger and controller, the water tank has external water source and cooling water inlet and hot water outlet with water spot respectively, also has and connects the loop exit of the heat exchanger inlet side by triple valve main road and circulating pump and connect the circulation import of the heat exchanger outlet；The hot water outlet also connects the branch of triple valve through water return pipeline；The signal input part of the controller is connect respectively positioned at the first temperature sensor of water tank and positioned at the second temperature sensor of water return pipeline, and the control signal output of the controller connects the controlled end of the triple valve, circulating pump and heat exchanger heat source respectively.The present invention constitutes simple and direct, cost economy, and heating water tanks, return water heat preservation, return water heat preservation three kinds of operational modes of nested heating water tanks may be implemented, effectively prevent the frequent starting of heat source, significantly extend its service life.
Description
Technical field
The present invention relates to a kind of water tank, especially a kind of integrated return water heat-exchanging water tank also relates to its control method, belongs to
In technical field of water heaters.
Background technique
Water heater has solar water heater, Teat pump boiler, electric heater, gas heater, heating/hot water supply at present
The types such as wall-hung boiler, no matter that type, if thermal water source farther out, can not directly meet and open i.e. from the tap of water spot
The use demand of thermal comfort water, and need to take external return circulating pump cyclic water heating pipe that can realize instant-heating,
For its typical structure referring to application No. is 201720632805.7 Chinese patent literature, system passes through return water collar member for hot-water line
It is attached with return pipe, then hot water circuit is carried out by circulating pump, may be implemented that there is existing plug and play hot water with water spot
Effect.
The heating method of storage-type electric water heater includes static and two kinds of heat forms of circulation, for static heating formula water heater
For, heat exchanger is placed in water tank, by carrying out heat in heat exchanger come the water in the circulatory mediator and water tank of self-heat power when work
Exchange the water in heating water tank；For circulating heating type water heater, heat exchanger is placed in outside water tank, by circulating pump when work
Cold water in water tank is evacuated to after external heat exchanger carries out heat exchange heating and is recycled and returned in water tank.
Therefore theoretically, with instant-heating function circulating heating type hot-water heating system must as application No. is
201820352724.6 technical solution is such, at least configures two circulating pumps, is respectively utilized to complete the external circulation heating of water tank
It is kept the temperature with the circulation of water return pipeline.
In addition, retrieval is it is found that application No. is 201610594352.3 Chinese patent applications to disclose a kind of heat-pump hot-water
The device circulatory system, technical solution on condenser inlet pipeline by being arranged the first triple valve, in tank inlet pipe Lu Shangshe
The first solenoid valve and second solenoid valve are set, circulating pump is set between water tank water intake pipeline and condenser inlet pipeline, so that should
Heat pump system has whole gallbladder quiet cycle heating mode, the quick heating mode of dynamic of plug and play may be implemented and eliminate
The anti-cold aqueous mode of cold water section, therefore it is integrated with the major advantage of directly-heated type and non-directly-heated type heat pump.However the technical solution must
One electric T-shaped valve, two solenoid valves and two threeways must be set, and not only structure is complex, but also anti-cold water function
It can only be heated by opening condenser；When winter, pipeline temperature drop was very fast, heat source frequent starting can be caused, influenced using the longevity
Life.In addition, the circulating-heating of non-directly-heated is smaller equipped with water tank heat accumulation, required power of heat source, and the requirement of the dynamic heat of directly-heated type
High-power heat source, therefore whole system both needs to be arranged water tank, configures high-power heat source again, investment is big, uneconomical.
In addition, the heat exchanger of regular circulation heating hot water installations is separated from each other with water tank, heating system is followed by water tank
Ring pump makes water external circulation heating therein, and since the specification of circulating pump is fixed, and the distance of heat source and water tank varies in different localities, and follows
Circulation is affected by the distance of heat source and water tank, is easy to cause system fluctuation of service.Such as when heat source and water tank away from
From farther out, circulation resistance increase when, circulating pump certainty flow reduce, as a result heating power is caused to decline, cannot played due
Efficiency.In addition, since the medium of external circulation heating is exactly the tap water in water tank, circulating line in winter under low-temperature condition easily
It freezes, therefore is frequently necessary to configuration insulating tube or to force to be kept the temperature in a manner of heat cycles, as a result makes pipe-line system complicated,
Installation trouble.
Summary of the invention
It is an object of the invention to: in view of the above-mentioned problems of the prior art, proposing only to need a circulating pump and one
Electric T-shaped valve can be achieved with circulating-heating and return water keep the temperature two kinds of functions and it is possible to prevente effectively from heat source frequent starting collection
At return water heat-exchanging water tank, while its control method is provided, to simplify circulating heating type water heater as far as possible, reduces cost, side
Just it installs, and guarantees stable.
In order to achieve the above object, the present invention integrates the basic technical scheme of return water heat-exchanging water tank are as follows: including water tank, heat exchange
Device and controller, the water tank have external water source and cooling water inlet and hot water outlet with water spot respectively, also have and pass through three
Port valve main road and circulating pump connect the loop exit of the heat exchanger inlet side and connect the circulation import of the heat exchanger outlet；
The hot water outlet also connects the branch of triple valve through water return pipeline；
The signal input part of the controller is connect respectively positioned at the first temperature sensor of water tank and positioned at the second of water return pipeline
Temperature sensor, the control signal output of the controller connect the triple valve, circulating pump and heat exchanger heat source respectively
Controlled end.
The present invention further improves: the inner connecting tube of the loop exit is arrived in concordant or a little higher than cooling water inlet
Position.
The present invention further improves: the cooling water inlet is arranged in water tank side bottommost.
The present invention also further improve is: the inscribed nozzle of the circulation import is higher than the inscribed nozzle of loop exit.
The present invention further improves: first temperature sensor is positioned above circulation import and nozzle is inscribed
Position.
When work, the control process of controller of the present invention are as follows:
The first step, into the return water standby mode for continuing to monitor the first and second temperature sensors, into next step；
Second step receives second temperature sensor signal, judges whether return water temperature is lower than its set temperature lower limit；It is in this way then into
Row third step, such as the 8th step of no progress；
Third step connects triple valve branch, starts circulating pump, carries out in next step；
4th step receives the first temperature sensor signal, judges whether water tank temperature is lower than its set temperature lower limit；It is in this way then into
Otherwise row in next step, such as carries out the 6th step；
5th step opens heat source, carries out in next step；
6th step receives the first and second temperature sensor signals, judges whether water tank temperature and return water temperature are above respectively
Corresponding setting value；It is in this way then carry out in next step, such as otherwise returning to third step；
7th step stops circulating pump, closes heat source, returns to the first step；
8th step, into the water heating standby mode for continuing to monitor the first temperature sensor, carry out in next step；
9th step receives the first temperature sensor signal, judges whether water tank temperature is lower than its set temperature lower limit；It is in this way then into
Otherwise row in next step, such as returns to the first step；
Tenth step connects triple valve main road, starts circulating pump, opens heat source, carries out in next step；
11st step judges whether water tank temperature is higher than setting value；It is in this way then carry out in next step, such as otherwise returning to previous step；
12nd step stops circulating pump, closes heat source, carries out in next step；
13rd step stops water heating, returns to the first step.
Compared with prior art, the present invention has the following obvious advantages:
1) only one circulating pump and an electric T-shaped valve are by the switching of single motor triple valve and the start-up and shut-down control of heat source
Heating water tanks, return water heat preservation, the nested heating water tanks Three models of return water heat preservation can be achieved, composition is most simple, and cost economy conscientiously may be used
Row.
2) return water soak cycles are preferentially using water tank as heat source, by hot water outlet through water return pipeline, again through electric T-shaped valve branch
Road is connected to circulating pump.When water tank temperature is higher, the hot water in water tank is done directly return water soak cycles, will be in water return pipeline
Circulating chilled water recovery tank；When water tank temperature is lower than set temperature, starts heat source during return water soak cycles, be completed at the same time and add
Boiler and return water heat preservation, kill two birds with one stone.Since return water soak cycles make full use of buffering, the heat accumulation function of water tank, do not need
Circulation starts heat source every time.
Detailed description of the invention
Fig. 1 is the structural schematic diagram (cyclic heating water tank state) of one embodiment of the invention.
Fig. 2 is the backwater circulation status diagram of Fig. 1 embodiment.
Fig. 3 is the control logic flow chart of Fig. 1 embodiment.
Specific embodiment
The integrated return water heat-exchanging water tank of the present embodiment is as depicted in figs. 1 and 2, and heat exchanger 1 and controller 6 are placed in water tank
The source heat pump heat 5 of 2 top, heat exchanger 1 and peripheral hardware constitutes thermal cycle.The side upper and lower part of water tank 2 is respectively provided with external
Water source and cooling water inlet 2-2 and hot water outlet 2-1 with water spot, top also has through 3 main road ac of electric T-shaped valve and circulation
Pump 4 meets the loop exit 2-3 of 1 inlet side of heat exchanger and meets the circulation import 2-4 of 1 outlet of heat exchanger.Hot water outlet 2-1 is also through return water
Pipeline 2-5 meets the branch ab of electric T-shaped valve 3.Water source is supplied water also by cold water Zhi Luxiang with water spot, to mix with hot water.
The specific composition of controller 6 is referring to entitled " a kind of adaptive instant-heating thermostat and method ", application number
For 201610988579.6 Chinese patent literature, signal input part meets the first temperature sensor T1 positioned at water tank 2 respectively
Be located at water return pipeline 2-5 second temperature sensor T2, the control signal output of controller 6 connect respectively electric T-shaped valve 3,
The controlled end of circulating pump 4 and heat exchanger heat source 5.
More specifically, cooling water inlet 2-2 be arranged in water tank side bottommost, in this way when user puts hot water, cold water from
Lowest part enters water tank, water temperature is integrally disturbed it is less, thus facilitate promoted hot water effluent lead.Loop exit 2-3's is inscribed
Pipe is arrived in the position of concordant or a little higher than cooling water inlet 2-2, can so be ensured in circulating-heating Water in Water Tanks temperature most
Low water, which is passed through in heat exchanger, to be heated, improving heat exchanging efficiency.The inscribed nozzle for recycling import 2-4 is interior higher than loop exit 2-3
Pipe nozzle is the hot water after heat exchanger heating or middle warm water from return pipe due to entering water tank from circulation import,
Meet water temperature delamination principle (cold water density is deposited on greatly water tank bottom, and hot water density height floats up to water tank upper), is conducive to keep away
Exempt from water temperature disturbance.First temperature sensor T1 is positioned above the position that nozzle is inscribed in circulation import 2-4, can follow to avoid return water
The adverse effect that the turbulent water of ring shows water tank upper high temperature water temperature.
When work, the control process of controller is as shown in figure 3, specific steps in the present embodiment are as follows:
The first step, into the return water standby mode for continuing to monitor the first and second temperature sensors, into next step；
Second step receives second temperature sensor signal, judges whether return water temperature T2 is lower than its Th-3C ° of set temperature lower limit；
It is in this way then carry out third step, such as the 8th step of no progress；
Third step connects electric T-shaped valve branch ab, starts circulating pump, carries out in next step；
4th step receives the first temperature sensor signal, judges whether water tank temperature T1 is lower than its set temperature lower limit Ts-5
C°；It is in this way then carry out in next step, such as otherwise carry out the 6th step；
5th step opens heat source, carries out in next step；
6th step receives first and second temperature sensor signal T1, T2, judges water tank temperature T1 respectively and return water temperature T2 is
It is no to be above corresponding setting value Ts, Th；It is in this way then carry out in next step, such as otherwise returning to third step；
7th step stops circulating pump, closes heat source, returns to the first step；
8th step, into the water heating standby mode for continuing to monitor the first temperature sensor, carry out in next step；
9th step receives the first temperature sensor signal T1, judges whether water tank temperature is lower than its set temperature lower limit Ts-5
C°；It is in this way then carry out in next step, such as otherwise returning to the first step；
Tenth step connects triple valve main road ac, starts circulating pump, opens heat source, carries out in next step；
11st step judges whether water tank temperature T1 is higher than setting value Ts；It is in this way then carry out in next step, such as otherwise return upper one
Step；
12nd step stops circulating pump, closes heat source, carries out in next step；
13rd step stops water heating, returns to the first step.
The above control logic makes the integrated return water heat-exchanging water tank of the present embodiment realize following handoff functionality:
1) water heating circulation (the 8th step rises)
When detecting water tank temperature T1 lower than its set temperature lower limit Ts-5 → electric T-shaped valve main road ac conducting → circulating pump
→ heat source unlatching is heated heat exchanger, and --- circulation water heating: water tank bottom cold water is through loop exit → passes through electronic three for starting
Heat of the port valve main road ac → circulating pump → cold water into heat exchanger absorption heat-exchange device → water temperature returned after increasing water tank recycle into
Mouth forms heating water tanks circulation --- until when detecting water tank temperature T1 > Ts → heat source stopping → circulating pump stopping, terminating to follow
Ring water heating.
2) return water soak cycles (second step rises)
When detecting return water temperature T 2 lower than its set temperature lower limit Th-3 → electric T-shaped valve branch ab conducting → circulating pump
When starting → detection water tank temperature T1 is higher than its set temperature lower limit Ts-5 --- it is not turned on the backwater circulation heat preservation of heat source: water
Case hot water is by hot water outlet → return pipe → return pipe cold water through electric T-shaped valve branch ab → circulating pump → simple process heat exchange
Device → circulation import returns to water tank --- until when return water temperature T2 > Th → circulating pump stopping.
3) water heating is nested in return water soak cycles
When detecting return water temperature T 2 lower than its set temperature lower limit Th-3 → electric T-shaped valve branch ab conducting → circulating pump
When starting → detection water tank temperature T1 is lower than its set temperature lower limit Ts-5 --- open the backwater circulation heat preservation of heat source: water tank
Hot water by hot water outlet → return pipe → return pipe cold water through electric T-shaped valve branch ab → circulating pump → through heat exchanger absorb heat
Amount → circulation import returns to water tank --- when water tank temperature T1 is higher than Ts and return water temperature T2 is higher than Th → circulating pump stopping.
Experiments have shown that the integrated return water heat-exchanging water tank of the present embodiment constitutes simple and direct, cost economy, water tank may be implemented and add
Heat, return water heat preservation, return water keep the temperature nested three kinds of operational modes of heating water tanks, return water soak cycles make full use of water tank buffering,
Heat accumulation function does not need to recycle starting heat source every time, therefore effectively prevents the frequent starting of heat source, and significantly extending it makes
Use the service life.
In addition to the implementation, the present invention can also have other embodiments.Such as heat exchanger can be plate change, buy or get by illegal means,
The indirect types heat exchanger such as high-efficiency tank, heat source are also possible to fire heat, electric heating etc. in addition to heat pump.It is all to use equivalent replacement or equivalent change
The technical solution to be formed is changed, is fallen within the scope of protection required by the present invention.
Claims (6)
1. a kind of integrated return water heat-exchanging water tank, including water tank, heat exchanger and controller, the water tank have external water source respectively and
With the cooling water inlet and hot water outlet of water spot, it is characterised in that: also have and connect the heat exchange by triple valve main road and circulating pump
The loop exit of device inlet side and the circulation import for connecing the heat exchanger outlet；
The hot water outlet also connects the branch of triple valve through water return pipeline；
The signal input part of the controller is connect respectively positioned at the first temperature sensor of water tank and positioned at the second of water return pipeline
Temperature sensor, the control signal output of the controller connect the triple valve, circulating pump and heat exchanger heat source respectively
Controlled end.
2. integrated return water heat-exchanging water tank according to claim 1, it is characterised in that: the inner connecting tube of the loop exit arrives at
In the position of concordant or a little higher than cooling water inlet.
3. integrated return water heat-exchanging water tank according to claim 1, it is characterised in that: the cooling water inlet is arranged in water tank one
Side bottommost.
4. integrated return water heat-exchanging water tank according to claim 3, it is characterised in that: the inscribed nozzle of the circulation import is high
In the inscribed nozzle of loop exit.
5. integrated return water heat-exchanging water tank according to claim 4, it is characterised in that: the first temperature sensor setting exists
Higher than the position that nozzle is inscribed in circulation import.
6. according to claim 1 to the control method of 5 any integrated return water heat-exchanging water tanks, it is characterised in that the controller
Control process are as follows:
The first step, into the return water standby mode for continuing to monitor the first and second temperature sensors, into next step；
Second step receives second temperature sensor signal, judges whether return water temperature is lower than its set temperature lower limit；It is in this way then into
Row third step, such as the 8th step of no progress；
Third step connects triple valve branch, starts circulating pump, carries out in next step；
4th step receives the first temperature sensor signal, judges whether water tank temperature is lower than its set temperature lower limit；It is in this way then into
Otherwise row in next step, such as carries out the 6th step；
5th step opens heat source, carries out in next step；
6th step receives the first and second temperature sensor signals, judges whether water tank temperature and return water temperature are above respectively
Corresponding setting value；It is in this way then carry out in next step, such as otherwise returning to third step；
7th step stops circulating pump, closes heat source, returns to the first step；
8th step, into the water heating standby mode for continuing to monitor the first temperature sensor, carry out in next step；
9th step receives the first temperature sensor signal, judges whether water tank temperature is lower than its set temperature lower limit；It is in this way then into
Otherwise row in next step, such as returns to the first step；
Tenth step connects triple valve main road, starts circulating pump, opens heat source, carries out in next step；
11st step judges whether water tank temperature is higher than setting value；It is in this way then carry out in next step, such as otherwise returning to previous step；
12nd step stops circulating pump, closes heat source, carries out in next step；
13rd step stops water heating, returns to the first step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910297958.4A CN110056938A (en) | 2019-04-15 | 2019-04-15 | A kind of integrated return water heat-exchanging water tank and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910297958.4A CN110056938A (en) | 2019-04-15 | 2019-04-15 | A kind of integrated return water heat-exchanging water tank and its control method |
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| Publication Number | Publication Date |
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| CN110056938A true CN110056938A (en) | 2019-07-26 |
Family
ID=67317650
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910297958.4A Withdrawn CN110056938A (en) | 2019-04-15 | 2019-04-15 | A kind of integrated return water heat-exchanging water tank and its control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110926023A (en) * | 2019-12-04 | 2020-03-27 | 珠海格力电器股份有限公司 | Heating system and control method thereof |
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| CN103267362A (en) * | 2013-06-17 | 2013-08-28 | 江苏天舒电器有限公司 | Constant temperature flow control method for heat pump water heater and double-system unit using same |
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| CN108458487A (en) * | 2018-04-23 | 2018-08-28 | 江苏迈能高科技有限公司 | A kind of intelligent hot water circulator and system and its control method |
| CN208282404U (en) * | 2018-06-14 | 2018-12-25 | 广东美格动力新能源有限公司 | Monoblock type air energy water heater with Intelligent return water device |
| 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 |
| CN210035687U (en) * | 2019-04-15 | 2020-02-07 | 江苏迈能高科技有限公司 | Integrated return water heat exchange water tank |
-
2019
- 2019-04-15 CN CN201910297958.4A patent/CN110056938A/en not_active Withdrawn
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|---|---|---|---|---|
| JP2003279136A (en) * | 2002-03-19 | 2003-10-02 | Toto Ltd | Heat pump water heater |
| JP2004028363A (en) * | 2002-06-21 | 2004-01-29 | Hitachi Air Conditioning System Co Ltd | Antifreezer in heat pump type water heater |
| CN102393071A (en) * | 2011-06-10 | 2012-03-28 | 樊华 | Intelligent backwater air energy heat pump water heater |
| KR20130032478A (en) * | 2011-09-23 | 2013-04-02 | 김석민 | Warm water supplying and heating apparatus |
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Application publication date: 20190726 |