CN109945494A - Waterway circulation system of water heater - Google Patents
Waterway circulation system of water heater Download PDFInfo
- Publication number
- CN109945494A CN109945494A CN201910063106.9A CN201910063106A CN109945494A CN 109945494 A CN109945494 A CN 109945494A CN 201910063106 A CN201910063106 A CN 201910063106A CN 109945494 A CN109945494 A CN 109945494A
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- water
- water heater
- pipe
- outlet pipe
- circulation system
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 186
- 230000000712 assembly Effects 0.000 claims description 18
- 238000000429 assembly Methods 0.000 claims description 18
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
Abstract
The invention relates to the technical field of water heaters, and discloses a water path circulating system of a water heater, which comprises the water heater, wherein a booster pump is arranged on a water outlet pipe of the water heater, a water inlet pipe of the water heater is respectively connected with a water supply pipe and a water return pipe, and the water path circulating system also comprises a stopping device, wherein two ends of the stopping device are respectively connected with the water outlet pipe and the water return pipe, and the stopping device is used for controlling the connection or the disconnection of the water outlet pipe and the water return pipe. The invention discloses a waterway circulation system of a water heater, wherein a stopping device is arranged, two ends of the stopping device are respectively connected with a water outlet pipe and a water return pipe and are used for controlling the connection or the disconnection of the water outlet pipe and the water return pipe, when the water outlet pipe is connected with the water return pipe, water in the water outlet pipe flows to the water return pipe through the stopping device to form a circulating heating state, and the function of zero cold water is realized; when outlet pipe and wet return do not communicate, realize the effect of pressure boost to the water in the outlet pipe through the booster pump, satisfy user's demand.
Description
Technical field
The present invention relates to technical field of water heaters more particularly to a kind of water passage circulation systems of water heater.
Background technique
With the continuous quickening of continuous improvement of people's living standards and rhythm of life, hot water apparatus with its energy-saving and environmental protection,
Fashion, beautiful feature allow its market demand to become to be increasingly urgent to, and demand of the people to domestic hot-water is also higher and higher.It is existing
Water heater there was only individual function of increasing pressure or independent zero cold water function.In order to realize the function of zero cold water, set in water heater
Putting back into water pipe makes to be recycled in circulation line by the water that water heater is heated, and goes out heat immediately when opening tap
Water.For the ease of realizing function of increasing pressure, if booster pump is directly arranged on circulation line, hydraulic pressure can be to cold water pipeline point a part
Pressure causes supercharging effect unobvious, is unable to satisfy the demand of user.
Summary of the invention
It is an object of the invention to propose a kind of water passage circulation system of water heater, the function of zero cold water and pressurization can be had both
Can, it meets the needs of users.
To achieve this purpose, the present invention adopts the following technical scheme:
The present invention provides a kind of water passage circulation system of water heater, including water heater, sets on the outlet pipe of the water heater
It is equipped with booster pump, it further includes stopper that the water inlet pipe of the water heater is connected with a water supplying pipe and a return pipe respectively, described
The both ends of stopper are connected with the outlet pipe and the return pipe respectively, for controlling the outlet pipe and the return water
The connection or closing of pipe.
The water passage circulation system of the water heater by setting stopper, the both ends of stopper respectively with outlet pipe and time
Water pipe is connected, for control outlet pipe and return pipe be connected to or closing, when outlet pipe is connected with return pipe, in outlet pipe
Water flow to return pipe by stopper and form hydronic state, realize the function of zero cold water；When outlet pipe and return
When water pipe is not connected to, the effect of pressurization is realized to the water in outlet pipe by booster pump, is met the needs of users.
A kind of preferred embodiment of water passage circulation system as above-mentioned water heater, the stopper include cut-off valve group
Part, the shut-off valve assemblies include two connecting pipelines, wherein the both ends of a connecting pipeline are connected with the water inlet pipe,
The both ends of another connecting pipeline are connected with the outlet pipe, pass through the first pipeline phase between two connecting pipelines
Even, control assembly connecting pipeline connection or closed of control two and is provided on first pipeline.
A kind of preferred embodiment of water passage circulation system as above-mentioned water heater, the shut-off valve assemblies further include unidirectional
Valve, the check valve are arranged on first pipeline, and the water in the outlet pipe is allowed to flow to the return pipe direction.It is single
Setting to valve can be avoided return water in-pipe flow and return in outlet pipe.
A kind of preferred embodiment of water passage circulation system as above-mentioned water heater, the control assembly include execution unit and
Control unit, the execution unit are electrically connected with the control unit.It can be realized the control to execution unit by control unit
System, with realize to outlet pipe and return pipe be connected to or the control of closing.
A kind of preferred embodiment of water passage circulation system as above-mentioned water heater, the control assembly further include power supply mould
Block, the power supply module are connected with the control unit.The setting of power supply module is for being powered control unit.
A kind of preferred embodiment of water passage circulation system as above-mentioned water heater, two connecting pipelines and described first
It is connected between pipeline by joint clamp.It can be realized the connection of connecting pipeline and the first pipeline, connection side by joint clamp
Just.
A kind of preferred embodiment of water passage circulation system as above-mentioned water heater, the stopper further include shell, institute
It states shut-off valve assemblies to be arranged in the shell, and the shell is stretched out at the both ends of two connecting pipelines.Shell is set
Cut-off component can be protected by setting.
A kind of preferred embodiment of water passage circulation system as above-mentioned water heater, the shut-off valve assemblies are H-shaped structure.
A kind of preferred embodiment of water passage circulation system as above-mentioned water heater, the stopper further include display dress
It sets, the display device is connected with the control unit.The setting of display device can show the state of stopper, convenient for using
The state of the understanding stopper at family.
A kind of preferred embodiment of water passage circulation system as above-mentioned water heater, between the return pipe and the outlet pipe
It is provided with water mixing valve, the water mixing valve is connect with water lines.Water supplying pipe can be flowed by return pipe by water mixing valve
Cold water is mixed with the hot water that outlet pipe flows out, and meets the demand of the water of different temperatures.
Beneficial effects of the present invention:
The water passage circulation system of water heater proposed by the present invention, by the way that stopper, the both ends difference of stopper is arranged
Be connected with outlet pipe and return pipe, for control outlet pipe and return pipe be connected to or closing, when outlet pipe is connected with return pipe
When logical, the water in outlet pipe flows to return pipe by stopper and forms hydronic state, realizes the function of zero cold water；
When outlet pipe is not connected to return pipe, the effect of pressurization is realized to the water in outlet pipe by booster pump, meets the need of user
It asks.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the water passage circulation system of water heater provided by the invention；
Fig. 2 is the structural schematic diagram of stopper provided by the invention；
Fig. 3 is that stopper provided by the invention removes the structural schematic diagram after upper housing.
In figure:
1, water heater；2, outlet pipe；3, water inlet pipe；4, booster pump；5, water supplying pipe；6, return pipe；7, stopper；8, it mixes
Water valve；9, water lines are used；
71, shut-off valve assemblies；72, shell；711, connecting pipeline；712, the first pipeline；713, control assembly；714, it powers
Module；715, joint clamp；716, washer；721, upper housing；722, lower case；7221, locating piece；73, door.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
The present invention provides a kind of water passage circulation system of water heater, as shown in Figure 1, the water passage circulation system of water heater includes
Water heater 1, is provided with booster pump 4 on the outlet pipe 2 of water heater 1, the water inlet pipe 3 of water heater 1 respectively with a water supplying pipe 5 and one time
Water pipe 6 is connected, and further includes stopper 7, the both ends of stopper 7 are connected with outlet pipe 2 and return pipe 6 respectively, for controlling
Produce water pipe 2 and return pipe 6 be connected to or closing, when outlet pipe 2 is connected with return pipe 6, the water in outlet pipe 2 is by cutting
Locking apparatus 7 flows to return pipe 6 and forms hydronic state, realizes the function of zero cold water；When outlet pipe 2 and return pipe 6 not
When connection, the effect of pressurization is realized to the water in outlet pipe 2 by booster pump 4, is met the needs of users.
As shown in Figures 2 and 3, stopper 7 includes shut-off valve assemblies 71 and shell 72, and shut-off valve assemblies 71 are arranged in shell
In body 72, shell 72 is sealed to shut-off valve assemblies 71 and protective effect.
As shown in Fig. 2, shell 72 includes upper housing 721 and lower case 722, shut-off valve assemblies 71 are arranged in lower case
In 722, the lid of upper housing 721 is located in lower case 722.It is installed for the ease of the contraposition of upper housing 721 and lower case 722, such as Fig. 3
It is shown, locating piece 7221 is set in lower case 722, location hole is set on locating piece 7221, positioning column is set on upper housing 721
(not shown) when installation, by protruding into the positioning column of upper housing 721 in lower case 722, realizes upper housing 721 under
The contraposition of shell 722 is installed.It can be sealed by sealant between upper housing 721 and lower case 722, prevent steam from entering
Corrosion is generated to shut-off valve assemblies 71 in shell 72.Shell 72 can also be sealed by other sealing means.
Further, shut-off valve assemblies 71 include two connecting pipelines 711 and the first pipeline 712, wherein a communicating pipe
The both ends on road 711 are connected with water inlet pipe 3, and the both ends of another connecting pipeline 711 are connected with outlet pipe 2, two connecting pipelines 711
Between be connected by the first pipeline 712, and be provided with the connection of two connecting pipelines 711 of control on the first pipeline 712 or close
Control assembly 713.Shell 72 is stretched out at the both ends of two connecting pipelines 711, in order to the connection with outlet pipe 2 and return pipe 6.
The both ends of connecting pipeline 711 are arranged with washer 716, and connecting pipeline 711 is contacted by washer 716 with shell 72, to communicating pipe
Play the role of sealing and protection in road 711.In present embodiment, two connecting pipelines 711 and the first pipeline 712 are seperated knot
Structure, the structure are easy preparation, and two connecting pipelines 711 and the first pipeline 712 are assembled into the shut-off valve of H-shaped structure by assembling
Component 71.Present embodiment is not limited to the shut-off valve assemblies 71 of H-shaped structure, two connecting pipelines 711 and the first pipeline 712 it
Between the combination that generates of different angle also fall into the protection scope of the application.In present embodiment, two connecting pipelines 711 and first
It is connected between pipeline 712 by joint clamp 715.Connecting pipeline 711 and the first pipeline can be realized by joint clamp 715
712 connection, it is easy to connect；It can also ensure that the leakproofness between two connecting pipelines 711 and the first pipeline 712.In order to increase
Sealing ring can be arranged in junction in leakproofness between strong two connecting pipelines 711 and the first pipeline 712, can be further
Enhance sealing effect.
The connection of the both ends of connecting pipeline 711 and outlet pipe 2 or return pipe 6 can be connected through a screw thread, flanged joint, insert
Connect, present embodiment is not limited to above-mentioned connection type and is attached, as long as can be realized connecting pipeline 711 and outlet pipe 2 or
The sealed connection of return pipe 6 each falls within the protection scope of the application.
Control assembly 713 includes execution unit and control unit, and execution unit is electrically connected with control unit.Pass through control unit
Part can be realized the control to execution unit, with realize to outlet pipe 2 and return pipe 6 be connected to or the control of closing.Enforcement division
The connection sides such as WIFI, power carrier, bluetooth, infrared ray can also be passed through by wired connection between part and control unit
Formula realizes connection, and specific connection type is arranged according to demand.
Further, execution unit can be solenoid valve, and the opening and closing of solenoid valve is controlled by control unit, to realize to out
Water pipe 2 and return pipe 6 be connected to or closing.Execution unit can also be the rotatable block piece being arranged in the first pipeline 712,
Specifically, block piece includes fixed block piece and active latch, and fixed block piece and active latch can block the first pipeline 712, Gu
Determine block piece to be fixed in the first pipeline 712, active latch is rotatably arranged in the first pipeline 712, passes through control unit control
The size of first pipe is opened in the rotation of active latch processed to adjust, and then realizes the connection or closing to the first pipeline 712.This
In embodiment, control unit can be motor.
Control assembly 713 further includes power supply module 714, and power supply module 714 is connected with control unit.As shown in figure 3, power supply
The setting of module 714 is for being powered control unit.In present embodiment, power supply module 714 can be battery, can be right
Control unit charges.Battery box structure is set in shell 72, battery is placed in battery box structure, to realize to battery
Receiving and fixation.Power supply module 714 can also be to carry out taking electricity from user's socket, no setting is required battery, using more convenient.
Control module can also be by wirelessly charging, and use is more convenient.In present embodiment, power supply module 714 is battery,
Dismountable door 73 is set on shell 72, convenient for the replacement to battery.
In order to avoid water flow in return pipe 6 from returning in outlet pipe 2, set on the first pipeline 712 of shut-off valve assemblies 71
Check valve (not shown) is set, so that the water in outlet pipe 2 is only capable of flowing to 6 direction of return pipe.
Stopper 7 further includes display device, and display device is connected with control unit.The setting of display device can be shown
The state of stopper 7, convenient for the state of the understanding stopper 7 of user.It can also be in the water passage circulation system of water heater
The temperature sensor being electrically connected with control unit or pressure sensor etc. are set, by showing that stopper 7 can show hot water
The parameters such as pressure and temperature in the water passage circulation system of device.
As shown in Figure 1, being provided with water mixing valve 8 between return pipe 6 and outlet pipe 2, water mixing valve 8 is connect with water lines 9.It is logical
Water supplying pipe 5 can be mixed by the cold water that return pipe 6 flows into the hot water that outlet pipe 2 flows out by crossing water mixing valve 8, be met not
The demand of synthermal water.Another water mixing valve 8 is provided between water inlet pipe 3 and outlet pipe 2, another water mixing valve 8 uses water with another
Pipeline 9 connects.It can connect the structures such as shower with water lines 9, it is user-friendly.Other use can also be connected on water inlet pipe 3
Water installations.
The use process of the water passage circulation system of water heater:
When user uses water heater 1, opens and use water lines 9, at this point, control unit control execution unit is closed,
Water in water heater 1 flows out after the pressurization of booster pump 4 by outlet pipe 2, by with water pipe after the mixing of water mixing valve 8
Road 9 is discharged.
When water heater 1 is not used in user, control unit controls execution unit and opens, and the water that outlet pipe 2 flows out is by cutting
Locking apparatus 7 flows into return pipe 6, and the water in return pipe 6 flows into water heater 1 through water inlet pipe 3 and heated, to realize following for water route
Ring can flow out hot water when user is using water heater 1, realize the function of zero cold water.
Note that above are only presently preferred embodiments of the present invention.It will be appreciated by those skilled in the art that the present invention is not limited to here
The specific embodiment, be able to carry out for a person skilled in the art it is various it is apparent variation, readjust and substitution and
Without departing from the scope of protection of the present invention.Therefore, although the present invention has been described in more detail through the above examples,
But the present invention is not limited to the above embodiments only, without departing from the inventive concept, can also include it is more other
Equivalent embodiment, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of water passage circulation system of water heater, including water heater (1), it is provided on the outlet pipe (2) of the water heater (1)
The water inlet pipe (3) of booster pump (4), the water heater (1) is connected with a water supplying pipe (5) and a return pipe (6) respectively, and feature exists
In, further include stopper (7), the both ends of the stopper (7) respectively with the outlet pipe (2) and the return pipe (6)
Be connected, for control the outlet pipe (2) and the return pipe (6) be connected to or closing.
2. the water passage circulation system of water heater according to claim 1, which is characterized in that the stopper (7) includes
Shut-off valve assemblies (71), the shut-off valve assemblies (71) include two connecting pipelines (711), wherein a connecting pipeline
(711) both ends are connected with the water inlet pipe (3), both ends and the outlet pipe (2) phase of another connecting pipeline (711)
Even, it is connected between two connecting pipelines (711) by the first pipeline (712), and is provided on first pipeline (712)
The control assembly (713) connecting pipeline (711) connection or closed of control two.
3. the water passage circulation system of water heater according to claim 2, which is characterized in that the shut-off valve assemblies (71) are also
Including check valve, the check valve is arranged on first pipeline (712), allows the water Xiang Suoshu in the outlet pipe (2)
The flowing of return pipe (6) direction.
4. the water passage circulation system of water heater according to claim 2, which is characterized in that control assembly (713) packet
Execution unit and control unit are included, the execution unit is electrically connected with the control unit.
5. the water passage circulation system of water heater according to claim 4, which is characterized in that the control assembly (713) is also
Including power supply module (714), the power supply module (714) connects with the control unit.
6. the water passage circulation system of water heater according to claim 2, which is characterized in that two connecting pipelines
(711) it is connected between first pipeline (712) by joint clamp (715).
7. the water passage circulation system of water heater according to claim 2, which is characterized in that the stopper (7) is also wrapped
It includes shell (72), shut-off valve assemblies (71) setting is in the shell (72), and the two of two connecting pipelines (711)
The shell (72) are stretched out at end.
8. the water passage circulation system of water heater according to claim 2, which is characterized in that the shut-off valve assemblies (71) are
H-shaped structure.
9. the water passage circulation system of water heater according to claim 4, which is characterized in that the stopper (7) is also wrapped
Display device is included, the display device is connected with the control unit.
10. according to claim 1 in -9 any water heater water passage circulation system, which is characterized in that the return pipe
(6) it is provided between the outlet pipe (2) water mixing valve (8), the water mixing valve (8) connect with water lines (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910063106.9A CN109945494A (en) | 2019-01-23 | 2019-01-23 | Waterway circulation system of water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910063106.9A CN109945494A (en) | 2019-01-23 | 2019-01-23 | Waterway circulation system of water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109945494A true CN109945494A (en) | 2019-06-28 |
Family
ID=67007237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910063106.9A Pending CN109945494A (en) | 2019-01-23 | 2019-01-23 | Waterway circulation system of water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109945494A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657298A (en) * | 2019-11-13 | 2020-01-07 | Tcl家用电器（中山）有限公司 | Combined one-way check valve and hot water system |
| CN111678252A (en) * | 2020-05-21 | 2020-09-18 | 聂晶 | Multi-device system of tail-end water heater |
| CN112524286A (en) * | 2020-11-30 | 2021-03-19 | 宁波方太厨具有限公司 | Water mixing valve and hot water circulation system comprising same |
| CN112833546A (en) * | 2020-05-15 | 2021-05-25 | 青岛经济技术开发区海尔热水器有限公司 | External pressurization system of water heater, control method and water heater with external pressurization system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011179735A (en) * | 2010-03-01 | 2011-09-15 | Corona Corp | Storage type hot water supply device |
| CN206439454U (en) * | 2016-12-28 | 2017-08-25 | 广东万家乐燃气具有限公司 | A kind of central hot water check valve and its central hot water circulation system |
| CN206468891U (en) * | 2016-12-14 | 2017-09-05 | 刘自根 | A kind of touch-induction-type constant-temperature water faucet |
| CN207831699U (en) * | 2017-12-22 | 2018-09-07 | 青岛恒星科技学院 | A kind of water heater cold water recovery system |
| CN108758012A (en) * | 2018-08-24 | 2018-11-06 | 艾欧史密斯(中国)热水器有限公司 | Valve and its hot-water heating system |
-
2019
- 2019-01-23 CN CN201910063106.9A patent/CN109945494A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011179735A (en) * | 2010-03-01 | 2011-09-15 | Corona Corp | Storage type hot water supply device |
| CN206468891U (en) * | 2016-12-14 | 2017-09-05 | 刘自根 | A kind of touch-induction-type constant-temperature water faucet |
| CN206439454U (en) * | 2016-12-28 | 2017-08-25 | 广东万家乐燃气具有限公司 | A kind of central hot water check valve and its central hot water circulation system |
| CN207831699U (en) * | 2017-12-22 | 2018-09-07 | 青岛恒星科技学院 | A kind of water heater cold water recovery system |
| CN108758012A (en) * | 2018-08-24 | 2018-11-06 | 艾欧史密斯(中国)热水器有限公司 | Valve and its hot-water heating system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657298A (en) * | 2019-11-13 | 2020-01-07 | Tcl家用电器（中山）有限公司 | Combined one-way check valve and hot water system |
| CN112833546A (en) * | 2020-05-15 | 2021-05-25 | 青岛经济技术开发区海尔热水器有限公司 | External pressurization system of water heater, control method and water heater with external pressurization system |
| CN111678252A (en) * | 2020-05-21 | 2020-09-18 | 聂晶 | Multi-device system of tail-end water heater |
| CN112524286A (en) * | 2020-11-30 | 2021-03-19 | 宁波方太厨具有限公司 | Water mixing valve and hot water circulation system comprising same |
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Application publication date: 20190628 |