CN107576055A - A kind of zero cold water water heater - Google Patents

A kind of zero cold water water heater Download PDF

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Publication number
CN107576055A
CN107576055A CN201710743487.6A CN201710743487A CN107576055A CN 107576055 A CN107576055 A CN 107576055A CN 201710743487 A CN201710743487 A CN 201710743487A CN 107576055 A CN107576055 A CN 107576055A
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CN
China
Prior art keywords
water
pipeline
circulating pump
cold water
zero cold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201710743487.6A
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Chinese (zh)
Inventor
郭灵华
邓飞忠
王克军
仇明贵
潘叶江
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vatti Co Ltd
Original Assignee
Vatti Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vatti Co Ltd filed Critical Vatti Co Ltd
Priority to CN201710743487.6A priority Critical patent/CN107576055A/en
Publication of CN107576055A publication Critical patent/CN107576055A/en
Withdrawn legal-status Critical Current

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Abstract

The invention is related to technical field of water heaters, and in particular to a kind of zero cold water water heater.A kind of zero cold water water heater, including body, installed in the intrinsic heat-exchange device, the inner inlet pipeline with water supply connector and the inside outlet pipeline with water out adapter, circulating pump is provided with the inner inlet pipeline, the water outlet direction of the pump operating cycle state is consistent with the water (flow) direction of the inner inlet pipeline, in the circulating pump water inlet end parallel pipeline is connected with water side, the first check valve is provided with the parallel pipeline, first check valve can make current flow to the circulating pump water side from the circulating pump water inlet end.This water heater can be overcome in the prior art with zero cold water functional hot water device the open-circuit condition water flowing underfed the problem of.

Description

A kind of zero cold water water heater
Technical field
The present invention relates to technical field of water heaters, and in particular to a kind of zero cold water water heater.
Background technology
The waterway structure form of zero cold water gas heater is divided into two pipe schemes (no backwater joint) and three in the market Pipe scheme (has backwater joint).As shown in Figure 7,8, using zero cold water gas heater of two pipe schemes, water route is connected in machine One circulating pump 2.As shown in fig. 7, when water heater is in open circuit use state, circulating pump is not run, and open circuit water flowing flow is followed Ring pump latus rectum influences.As shown in figure 8, when water heater is in circulation preheating, closed circuit flow depends on the specification type selecting of circulating pump.
As shown in Fig. 9,10, using zero cold water gas heater of three pipe schemes, water route water inlet end sets bypass branch in machine Road connects backwater joint, and circulating pump 2 and check valve 30 are set on the bypass branch.As shown in figure 9, when water heater is in Open circuit use state, running water are not passed through circulating pump 2, and water flowing flow is not influenceed by circulating pump.As shown in Figure 10, at water heater When preheating is circulated, the water of hot water line flows through return pipe and backwater joint, lays equal stress on and newly flows back to circulating pump 2.
For several zero cold water gas heaters that rise higher, user is concerned about that open circuit shower flow is big, according to conventional two Guan Fang During case, then must select big orifice circulating pump, and big orifice circulation pump volume it is big, consumptive material is more, it is pressure-resistant it is weak, cost is high.Therefore, city Several zero cold water gas heaters that risen higher on mainly use three pipe schemes, to ensure water flowing flow of opening a way.But three pipe schemes need A piece return pipe of laying in advance, user's early investment is costly, big for renovated the commercial house modification difficulty.
The content of the invention
Present invention aim to solve in the prior art zero cold water water heater in open-circuit condition water flowing underfed Technical problem, the present invention propose a kind of zero cold water water heater.
A kind of zero cold water water heater, including body, installed in the intrinsic heat-exchange device, with water supply connector Inner inlet pipeline and the inside outlet pipeline with water out adapter, are provided with circulating pump, institute on the inner inlet pipeline It is consistent with the water (flow) direction of the inner inlet pipeline to state the water outlet direction of pump operating cycle state, in the circulating pump water inlet end Parallel pipeline is connected with water side, the first check valve is provided with the parallel pipeline, first check valve can make current The circulating pump water side is flowed to from the circulating pump water inlet end.When water heater is in open circuit, i.e., described circulating pump is inoperative, Current collaborate in the inner inlet pipeline via the circulating pump and parallel pipeline, and now water heater water flowing flow is big, overcomes The problem of circulating pump latus rectum deficiency.When water heater is in closed circuit state, i.e., circulating pump operates, in the circulating pump Water inlet end forms negative relative, relative malleation is formed in the water side of the circulating pump, due to the first check valve both ends water pressure Direction is with the first check valve conducting direction on the contrary, the water of the inner inlet pipeline therefore can be prevented through the parallel pipeline Inversely flow back into the water inlet end of the circulating pump.
Further, diversion three-way valve is provided with the water inlet end of the circulating pump, is provided with the water side of the circulating pump Converging three-way valve.Diversion three-way valve is connected in one end of the parallel pipeline, and the other end connects converging three-way valve, realizes point of current Stream and interflow.
Further, the circulating pump and parallel pipeline are arranged on the body interior.By the circulating pump and parallel transistor Road is arranged on the body interior, and such water heater is inherently integrated with zero cold water function, without external equipment.
Further, the internal outlet pipeline connects with being arranged on the hot water line of the body exterior, and described is interior Portion's inlet pipeline and the cold water pipeline connection for being arranged on the body exterior, the hot water line are single by second with cold water pipeline Connected to valve, the second check valve conducting direction flows to the direction one of the cold water pipeline with current from the hot water line Cause.So when water heater is in closed circuit state, i.e., described circulating pump operating, the water of the hot water line is in circulation pumping action Under via second check valve and cold water pipeline flow into the inner inlet pipeline, through the heat-exchange device heat temperature raising The hot water line is flow back into by the internal outlet pipeline again afterwards, a waterway circulating is formed, so as to complete to described The preheating of hot water line's water, realize zero cold water function.
Further, the internal outlet pipeline connects with being arranged on the hot water line of the body exterior, is followed described The inlet pipeline of ring pump is provided with bypass branch, and the bypass branch is connected by being arranged on the water return pipeline of the body exterior The hot water line, and the 3rd check valve, the conducting direction and water of the 3rd check valve are provided with described bypass branch The direction that stream flows to the bypass branch from the water return pipeline is consistent.It is so when water heater is in closed circuit state, i.e., described Circulating pump operates, and the water of the hot water line is in the case where circulating pumping action via the water return pipeline, the 3rd check valve and bypass Branch road flows into inner inlet pipeline, is flow back into again by the internal outlet pipeline after the heat-exchange device heat temperature raising The hot water line, a waterway circulating is formed, so as to complete the preheating to hot water line's water, realizes zero cold water work( Energy.
Further, the bypass branch is arranged on the body interior.The bypass branch is arranged in the body Portion, go that bypass branch is installed in addition without user.
Further, backwater joint is provided with the bypass branch, and the backwater joint is arranged on the body exterior, Backwater joint is easy to fast connect water return pipeline.
Compared with prior art, beneficial effects of the present invention:
1. zero cold water water heater in the present invention uses parallel shunt structure, open circuit water flowing flow is not by circulating pump latus rectum shadow Ring, realize that big flow supplies water.
2. zero cold water water heater in the present invention can cancel water return pipeline, pipe laying expense is saved.
3. due to that there is provided parallel pipeline, small circulating pump can be used to realize and circulate pre- hot function, save complete machine cost. In addition, under same pump body wall shape thickness state, the water-fast Compressive Strength for minimizing circulating pump is higher.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention 1;
Fig. 2 is the structural representation when embodiment of the present invention 1 is in open circuit;
Fig. 3 is that the embodiment of the present invention 1 is in the structural representation that closed cycle preheating is;
Fig. 4 is the structural representation of the embodiment of the present invention 2;
Fig. 5 is the structural representation when embodiment of the present invention 2 is in open circuit;
Fig. 6 is that the embodiment of the present invention 2 is in the structural representation that closed cycle preheating is;
Fig. 7 is the schematic diagram of the conventional pipe scheme of zero cold water gas heater two open circuit water flowing;
Fig. 8 is the schematic diagram of the conventional pipe scheme closed cycle of zero cold water gas heater two preheating;
Fig. 9 is the schematic diagram of the conventional pipe scheme of zero cold water gas heater three open circuit water flowing;
Figure 10 is the schematic diagram of the conventional pipe scheme closed cycle of zero cold water gas heater three preheating.
Marked in figure:
1- water heater bodies, 2- circulating pumps, 3- converging three-way valves, 4- diversion three-way valves, the check valves of 5- first, 6- bypass branch Road, 7- water supply connectors, 8- water out adapters, 9- heat-exchange devices, 10- inner inlet pipelines, 11- inside outlet pipeline, 12- hot water Pipeline, 13- cold water pipelines, 14- water equipments, 15- water mixing valves, the check valves of 16- second, 17- bypass branch, 18- backwater joints, The check valves of 19- the 3rd, 20- backwater triple valves, 21- water return pipelines, 30- check valves.
Embodiment
Embodiment 1
In the present embodiment, water heater is gas heater, and those skilled in the art are it is anticipated that the pipe of the present invention Line structure also is adapted for other kinds of water heater, such as electric heater.Arrow represents water (flow) direction in the accompanying drawings.
As shown in figure 1, the present invention zero cold water water heater of one kind includes water heater body 1, circulating pump 2, diversion three-way valve 3rd, converging three-way valve 4, the first check valve 5, water supply connector 7, water out adapter 8, heat exchanger 9, inner inlet pipeline 10 and inside Outlet pipeline 11.Inner inlet pipeline 10 connects with water supply connector 7, and internal outlet pipeline 11 connects with water out adapter 8.Circulating pump 2 are arranged on the inner inlet pipeline 10 of water heater body 1, and the water outlet direction of the running status of circulating pump 2 and inner inlet pipe The water (flow) direction on road 10 is consistent.In the water inlet end of circulating pump 2 connection diversion three-way valve 3, connect and collaborate in the water side of circulating pump 1 Triple valve 4.Parallel pipeline 6 is connected to described diversion three-way valve 3 and converging three-way valve 4, the is provided with the parallel pipeline 6 One check valve 5.First check valve 5 can make current flow to the water side of circulating pump 2 from the water inlet end of circulating pump 2, and formation follows The parallel shunt structure of 2 and first check valve of ring pump 5.The circulating pump 2 and parallel pipeline 6 are arranged on the inside of water heater body 1, So water heater is inherently integrated with zero cold water function, without external equipment.
As shown in Fig. 2 when mounted, water equipment 14 connects with the water outlet mouthpiece of water mixing valve 15, water out adapter 8 passes through heat Water lines 12 connect with the interface of hot water of water mixing valve 15, and water supply connector 7 passes through cold water pipeline 13 and the cold water interface of water mixing valve 15 Connection.The second check valve 16 is being set to connect the hot water line 12 with cold water pipeline 13 at the water mixing valve 15, and The direction that the conducting direction of second check valve 16 flows to cold water pipeline 13 with current from hot water line 12 is consistent.
As shown in Fig. 2 water heater is in open circuit water flowing state, now the hot water end of water mixing valve 15 is opened, water equipment 14 Use water.At this moment circulating pump 2 is not run, and running water flows into water heater body 1 from water supply connector 7, in the diversion three-way Two strands of current are split at valve 4 and flow to circulating pump 2 and parallel pipeline 6 respectively, the first check valve 5 turns under hydraulic action.Stream Two strands of current through circulating pump 2 and parallel pipeline 6 converge again at converging three-way valve 3, then flow into inner inlet pipeline 10, warp Hot water line 12 is flow to by internal outlet pipeline 11 and water out adapter 8 after the heat temperature raising of heat exchanger 9.Due to second unidirectional The presence of valve 16, running water will not flow into hot water line 12 via cold water pipeline 13.The pipe scheme of zero cold water water heater two is using simultaneously Connection formula waterway structure, water heater open circuit water flowing flow is bigger, can overcome the influence of the latus rectum of circulating pump 2 deficiency.
As shown in figure 3, water heater is in the pre- Warm status of closed cycle, now the cold and hot water end (W.E.) of water mixing valve 15 simultaneously closes off, The not water outlet of water equipment 14.Circulating pump 2 runs and drives pipeline water to circulate, and the water of hot water pipeline 12 is in circulating pump Enter the inner inlet pipeline 10 of water heater body 1 under 2 effects via the second check valve 16, cold water pipeline 13 and water supply connector 7, Hot water line 12, completion pair are flow back into by internal outlet pipeline 11 and water out adapter 8 again after the heat temperature raising of heat exchanger 9 The heating of the water of hot water line 12.Due to the operating of circulating pump 2, negative relative is formed in the water inlet end of circulating pump 2, in circulating pump 2 water side forms relative malleation, due to the both ends hydraulic pressure force direction of the first check valve 5 and the conducting direction of the first check valve 5 on the contrary, Therefore the water of inner inlet pipeline 10 can be prevented inversely to flow back into the water inlet end of circulating pump 2 via parallel pipeline 6.
Embodiment 2
The basic structure of the water heater of embodiment 2 is in the same manner as in Example 1, and simply inlet pipeline changes.
As shown in figure 4, setting backwater joint 18 outside water heater body 1, side is provided with the inlet pipeline of circulating pump 2 Logical branch road 17 connects described backwater joint 18, and the 3rd check valve 19 is provided with the bypass branch 17, and the described the 3rd The direction that the conducting direction of check valve 19 flows to the water inlet end of circulating pump 2 with current from backwater joint 18 is consistent.
As shown in figure 5, when mounted, backwater triple valve 20 is set at water equipment 14 in hot water line 12, and lead to Water return pipeline 21 is crossed to connect the backwater triple valve 20 with backwater joint 18.Thus the water of hot water line 12 can be via backwater Triple valve 20, water return pipeline 21, backwater joint 18 and bypass branch 17 flow back to water heater body 1 and reheated.
As shown in figure 5, water heater is in open circuit water flowing state, now the hot water end of water mixing valve 15 is opened, water equipment 14 Use water.Circulating pump 2 is not run, and running water flows into water heater body 1 from water supply connector 7, is punished in the diversion three-way valve 4 Flow into two strands of current and flow to circulating pump 2 and parallel pipeline 6 respectively, the first check valve 5 turns under hydraulic action.Flow through circulating pump 2 and two strands of current of parallel pipeline 6 converged again at converging three-way valve 3, then inner inlet pipeline 10 is flowed into, through heat exchanger Hot water line 12 is flow to by internal outlet pipeline 11 and water out adapter 8 after 9 heat temperature raisings.Due to water (flow) direction and the 3rd unidirectional Therefore the conducting direction of valve 19 is on the contrary, can prevent running water from flowing into water return pipeline 21 through bypass branch 17.
As shown in fig. 6, water heater is in the pre- Warm status of closed cycle, described circulating pump 2 runs and drives pipeline water Circulate, form negative relative in the water inlet end of circulating pump 2, relative malleation is formed at backwater joint 18, in hydraulic action Under can turn on the 3rd check valve 19, the water of hot water line 12 is under the effect of circulating pump 2 via backwater triple valve 20, return pipe Road 21, backwater joint 7 and bypass branch 17 enter the inner inlet pipe 10 of water heater body 1, after the heat temperature raising of heat exchanger 9 Hot water line 12 is flow back into by internal outlet pipeline 11 and water out adapter 8 again, completes the heating to the water of hot water line 12. Now because the work of circulating pump 2, the first check valve 5 are not turned on, its principle is in the same manner as in Example 1.
Technical scheme and beneficial effect are described in detail upper described embodiment, it should be understood that Be that the foregoing is only presently most preferred embodiment of the invention, be not intended to limit the invention, it is all the present invention spirit Interior done any modification, supplement and equivalent substitution etc., should be included in the scope of the protection.

Claims (7)

1. a kind of zero cold water water heater, including body, installed in the intrinsic heat-exchange device, with water supply connector Portion's inlet pipeline and the inside outlet pipeline with water out adapter, it is characterised in that be provided with the inner inlet pipeline Circulating pump, the water outlet direction of the pump operating cycle state is consistent with the water (flow) direction of the inner inlet pipeline, is followed described Ring pump water inlet end connects parallel pipeline with water side, and the first check valve is provided with the parallel pipeline, and described first is unidirectional Valve can make current flow to the circulating pump water side from the circulating pump water inlet end.
2. zero cold water water heater according to claim 1, it is characterised in that be provided with shunting in the water inlet end of the circulating pump Triple valve, converging three-way valve is provided with the water side of the circulating pump.
3. zero cold water water heater according to claim 2, it is characterised in that the circulating pump and parallel pipeline are arranged on institute State body interior.
4. zero cold water water heater according to claim 3, it is characterised in that the internal outlet pipeline is described with being arranged on Hot water line's connection of body exterior, described inner inlet pipeline and the cold water pipeline connection for being arranged on the body exterior, The hot water line is connected with cold water pipeline by the second check valve, and the second check valve conducting direction and current are from the warm The direction that water lines flow to the cold water pipeline is consistent.
5. zero cold water water heater according to claim 3, it is characterised in that the internal outlet pipeline is described with being arranged on Hot water line's connection of body exterior, is provided with bypass branch, the bypass branch passes through on the inlet pipeline of the circulating pump The water return pipeline for being arranged on the body exterior is connected with hot water line, and the 3rd check valve is provided with the bypass branch, The direction that the conducting direction of 3rd check valve flows to the bypass branch with current from the water return pipeline is consistent.
6. zero cold water water heater according to claim 5, it is characterised in that the bypass branch is arranged in the body Portion.
7. zero cold water water heater according to claim 6, it is characterised in that the bypass branch is provided with backwater joint, and The backwater joint is arranged on the body exterior.
CN201710743487.6A 2017-08-25 2017-08-25 A kind of zero cold water water heater Withdrawn CN107576055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710743487.6A CN107576055A (en) 2017-08-25 2017-08-25 A kind of zero cold water water heater

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Application Number Priority Date Filing Date Title
CN201710743487.6A CN107576055A (en) 2017-08-25 2017-08-25 A kind of zero cold water water heater

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109000377A (en) * 2018-08-09 2018-12-14 广东万家乐燃气具有限公司 A kind of constant temp gas water heater and gas water heater constant temperature control method
CN110159813A (en) * 2019-05-23 2019-08-23 广东维宁科技有限公司 A kind of transverse direction water route pressure reversing arrangement and hot water cyclesystem
CN110186198A (en) * 2019-05-22 2019-08-30 华帝股份有限公司 Waterway system of dual-purpose gas water heater, gas water heater and control method of gas water heater
CN110207389A (en) * 2018-10-26 2019-09-06 华帝股份有限公司 Control method for pressurization function of gas water heater
CN110207390A (en) * 2018-10-26 2019-09-06 华帝股份有限公司 Shutdown control method for gas water heater
CN110207388A (en) * 2018-10-26 2019-09-06 华帝股份有限公司 Intelligent shutdown control method for gas water heater
CN110440451A (en) * 2019-07-19 2019-11-12 华帝股份有限公司 Water heater system
CN110953725A (en) * 2019-11-26 2020-04-03 华帝股份有限公司 Hot water circulating device with drying function and control method applying same
CN113041924A (en) * 2019-12-27 2021-06-29 芜湖美的厨卫电器制造有限公司 Microbubble generating device and water heater

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11211225A (en) * 1998-01-23 1999-08-06 Noritz Corp Operation control method for bath unit
CN204787185U (en) * 2015-06-29 2015-11-18 广东万和新电气股份有限公司 Gas heater and use its water route pipe network
CN205561221U (en) * 2016-04-18 2016-09-07 中山市恒乐电器有限公司 Zero cooling water ciculation formula gas heater
CN106369807A (en) * 2016-10-20 2017-02-01 广东万和新电气股份有限公司 Zero-cold-water gas water heater and system thereof
CN207379043U (en) * 2017-08-25 2018-05-18 华帝股份有限公司 A kind of zero cold water water heater

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11211225A (en) * 1998-01-23 1999-08-06 Noritz Corp Operation control method for bath unit
CN204787185U (en) * 2015-06-29 2015-11-18 广东万和新电气股份有限公司 Gas heater and use its water route pipe network
CN205561221U (en) * 2016-04-18 2016-09-07 中山市恒乐电器有限公司 Zero cooling water ciculation formula gas heater
CN106369807A (en) * 2016-10-20 2017-02-01 广东万和新电气股份有限公司 Zero-cold-water gas water heater and system thereof
CN207379043U (en) * 2017-08-25 2018-05-18 华帝股份有限公司 A kind of zero cold water water heater

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109000377A (en) * 2018-08-09 2018-12-14 广东万家乐燃气具有限公司 A kind of constant temp gas water heater and gas water heater constant temperature control method
CN109000377B (en) * 2018-08-09 2023-11-14 广东万家乐燃气具有限公司 Constant-temperature gas water heater and constant-temperature control method of gas water heater
CN110207390B (en) * 2018-10-26 2021-07-09 华帝股份有限公司 Shutdown control method for gas water heater
CN110207389A (en) * 2018-10-26 2019-09-06 华帝股份有限公司 Control method for pressurization function of gas water heater
CN110207390A (en) * 2018-10-26 2019-09-06 华帝股份有限公司 Shutdown control method for gas water heater
CN110207388A (en) * 2018-10-26 2019-09-06 华帝股份有限公司 Intelligent shutdown control method for gas water heater
CN110207388B (en) * 2018-10-26 2021-07-09 华帝股份有限公司 Intelligent shutdown control method for gas water heater
CN110186198A (en) * 2019-05-22 2019-08-30 华帝股份有限公司 Waterway system of dual-purpose gas water heater, gas water heater and control method of gas water heater
CN110159813A (en) * 2019-05-23 2019-08-23 广东维宁科技有限公司 A kind of transverse direction water route pressure reversing arrangement and hot water cyclesystem
CN110440451A (en) * 2019-07-19 2019-11-12 华帝股份有限公司 Water heater system
CN110953725A (en) * 2019-11-26 2020-04-03 华帝股份有限公司 Hot water circulating device with drying function and control method applying same
CN113041924A (en) * 2019-12-27 2021-06-29 芜湖美的厨卫电器制造有限公司 Microbubble generating device and water heater
CN113041924B (en) * 2019-12-27 2023-09-29 芜湖美的厨卫电器制造有限公司 Microbubble generating device and water heater

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Application publication date: 20180112