CN104110856B - Water-heater system - Google Patents
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- CN104110856B CN104110856B CN201410340188.4A CN201410340188A CN104110856B CN 104110856 B CN104110856 B CN 104110856B CN 201410340188 A CN201410340188 A CN 201410340188A CN 104110856 B CN104110856 B CN 104110856B
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Abstract
The invention discloses a kind of water-heater systems, comprising: water heater components, water inlet pipe, outlet pipe, control valve, water pump and controller.Water heater components have inlet and outlet.Water inlet pipe is suitable for being connected with water source and has cooling water outlet, and water inlet pipe is connected with water inlet.Outlet pipe has hot water outlet, and outlet pipe is connected with water outlet.Control valve is connected between outlet pipe and water inlet pipe so that the water in outlet pipe unidirectionally flows into water inlet pipe.Water pump is connected in parallel on water inlet pipe so that the water in water inlet pipe to be pumped into water heater components.Controller is electrically connected respectively to control the operation of water heater components and water pump respectively with water heater components and water pump.Water-heater system according to the present invention, so that water-heater system has water return function, the recyclable heating of the water in water-heater system, and make any usable hot water of water spot, and pipe laying is simple, cost is not high.In addition, can avoid energy waste, and it can realize the function with instant-heating when water.
Description
Technical field
The present invention relates to field of household appliances, more particularly, to a kind of water-heater system.
Background technique
In the actual use of water heater, with a Duan Guanlu is connected between water spot and heating equipment, heat is not had to for a long time
When water, the water in the pipeline is changed into cold water.When needing using hot water, user can not use hot water immediately, most short to need
Hot water can be just used to several seconds.
Summary of the invention
The present invention is directed at least solve the technical problems existing in the prior art.For this purpose, the purpose of the present invention is to provide
A kind of water-heater system, the water-heater system can will be heated with the water in the pipeline between water spot and water heater, and can be real
Existing instant-heating.
Water-heater system according to an embodiment of the present invention, comprising: water heater components, the water heater components have water inlet
And water outlet;Suitable for being connected and having the water inlet pipe of cooling water outlet, one end of the water inlet pipe and the water inlet phase with water source
Even;Outlet pipe with hot water outlet, one end of the outlet pipe are connected with the water outlet;Control valve, the control valve string
It is associated between the other end of the outlet pipe and the other end of the water inlet pipe so that the water in the outlet pipe unidirectionally flows into institute
State water inlet pipe;Water pump, the water pump are connected in parallel on the water inlet pipe so that the water in the water inlet pipe is pumped into the heat
In hydrophone component;Controller, the controller are electrically connected respectively with the water heater components and the water pump to control institute respectively
State the operation of water heater components and the water pump.
Water-heater system according to an embodiment of the present invention, by being arranged in parallel water pump on water inlet pipe, and in water inlet pipe and
Series control valve between outlet pipe is so that water single flow direction water inlet pipe in outlet pipe, so that water-heater system has return water
Function, the recyclable heating of water in water-heater system, and any hot water to can be used with water spot.Moreover, water-heater system
Pipe laying is simple, and cost is not high.The operation that water heater components and water pump are controlled by setting controller, can be improved water heater
The harmony of system operation, avoids energy waste, and can realize the function with instant-heating when water.
In addition, water-heater system according to the present invention can also have following additional technical feature:
In some embodiments of the invention, water-heater system further includes the first check valve, first check valve and institute
Water pump is stated to be connected in series and be connected in parallel on the water inlet pipe.The aqueous reflux that can avoid in water pump as a result, causes water pump to damage,
To extend the service life of water pump.In addition, can avoid water heater components in water flow to water pump, to guarantee water-heater system
Normal operation.
Further, water-heater system further includes second one-way valve, and the second one-way valve series connection is located at the water inlet pipe
Suitable at the port that is connected with the water source with the one-way conduction on the water source to the direction of the water inlet pipe.As a result, may be used
The water in water inlet pipe after heating is avoided to flow out from water source port, to reduce the energy consumption of water-heater system.
In some embodiments of the invention, the water heater components include: gas heater, the gas and hot water utensil
There are the first water inlet and the first water outlet, the water inlet pipe is connected with first water inlet;Electric heater, the electric heater
With the second water inlet and the second water outlet, second water inlet is connected with first water outlet, second water outlet
It is connected with the outlet pipe.Wherein, gas heater heating is rapidly, it can be achieved that fast supply hot water.And the heat production of electric heater
Water is big, can meet user and largely use water, and electric heater has water tank with water storage, therefore the water preheating in water-heater system
After completing and stopping circulation, the hot water in water-heater system is largely stored in electric heater, so that heat losses are reduced, with
Further decrease energy consumption.
Specifically, water-heater system further includes relief valve, and the relief valve is connected on first water outlet and described
Between two water inlets.Thus, it is ensured that hydraulic pressure is suitable in electric heater, to guarantee the normal operation of water-heater system.
Further, water-heater system further includes the first temperature measuring element for detecting water temperature, and first temperature measuring element is located at
In the water heater components or the outlet pipe, the controller is electrically connected to survey according to described first with first temperature measuring element
The testing result of warm part controls the on and off of the water pump.The water temperature of hot water outlet outflow can be determined as a result, thus
Improve the controllability of water temperature.
Optionally, first temperature measuring element is located at first water outlet.The length of connection line can be shortened as a result,
Convenient for trace arrangements.
Further, water-heater system further includes the second temperature measuring element for detecting the water temperature in the electric heater,
The controller is electrically connected to control the electric hot water according to the testing result of second temperature measuring element with second temperature measuring element
Device it is on and off.
Optionally, the control valve is check valve.Cost is relatively low for control valve as a result, and installation is easy.
Advantageously, the controller is equipped with the return water function for controlling the operation of the water pump and the water heater components
It can key.As a result, user at any time section use hot water when, all can be by pressing water return function key so that in water-heater system
The recyclable heating of water, to realize whole day heat supply, instant-heating.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of water-heater system according to an embodiment of the present invention.
Appended drawing reference:
Water-heater system 100,
Water heater components 1, water inlet A, water outlet B, gas heater 11, the first water inlet 11A, the first water outlet 11B,
Electric heater 12, the second water inlet 12A, the second water outlet 12B,
Water inlet pipe 3, cooling water outlet 31, water source port 32,
Outlet pipe 4, hot water outlet 41,
Control valve 51, water pump 52,
First check valve 53, second one-way valve 54, relief valve 55,
Water source 200.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
It is a or more than two.
In the description of the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ",
" fixation " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral;It can be machinery
Connection, is also possible to be electrically connected;It can be directly connected, two elements can also be can be indirectly connected through an intermediary
The interaction relationship of internal connection or two elements.It for the ordinary skill in the art, can be with concrete condition
Understand the concrete meaning of above-mentioned term in the present invention.
Water-heater system 100 according to an embodiment of the present invention is described below with reference to Fig. 1.
Water-heater system 100 according to an embodiment of the present invention, as shown in Figure 1, comprising: water heater components 1, go out water inlet pipe 3
Water pipe 4, control valve 51, water pump 52 and controller.
Wherein, water heater components 1 have water inlet A and water outlet B, and water inlet pipe 3 is suitable for being connected with water source 200 and having cold
One end of water out 31, water inlet pipe 3 is connected with water inlet A, and outlet pipe 4 has hot water outlet 41, one end of outlet pipe 4 and water outlet
Mouth B is connected.
Here, water source 200 may be from municipal water supply, and water inlet pipe 3 is equipped with water source port 32, water source port 32 and water source
200 are connected to supply water and heat to water heater components 1, and the water after water heater components 1 heat can be flowed out by outlet pipe 4.It needs
Bright, the water that the cooling water outlet 31 on water inlet pipe 3 flows out is usually normal-temperature water, what the hot water outlet 41 on outlet pipe 4 flowed out
Water is usually the hot water after the heating of water heater components 1.Cooling water outlet 31 and hot water outlet 41 may be provided in bathroom or kitchen, such as
In the example depicted in fig. 1, cooling water outlet 31 and hot water outlet 41 are respectively multiple, and multiple cooling water outlets 31, which are respectively provided at, to wash one's face
At basin and shower, multiple hot water outlets 41 are also respectively provided at washbowl and shower.Certainly, the invention is not limited thereto, cold
The setting position of water out 31 and hot water outlet 41 is determined by practical situations, is not especially limited here.
Referring to Fig.1, control valve 51 is connected between the other end of outlet pipe 4 and the other end of water inlet pipe 3 so that outlet pipe 4
Interior water unidirectionally flows into water inlet pipe 3, and water pump 52 is connected in parallel on water inlet pipe 3 so that the water in water inlet pipe 3 is pumped into water heater
In component 1, controller is electrically connected respectively to control water heater components 1 and water pump 52 respectively with water heater components 1 and water pump 52
Operation.
That is, water inlet pipe 3 is connected with outlet pipe 4 by control valve 51, and under the driving effect of water pump 52, outlet pipe
Water in 4 can flow to water inlet pipe 3 by control valve 51, then be flowed into water heater components 1 by water inlet pipe 3 to heat.As a result,
Water-heater system 100 has water return function, the recyclable heating of the water in water-heater system 100.By setting control valve 51 to go here and there
Connection is connected to water inlet pipe 3 and outlet pipe 4 so that the water in outlet pipe 4 can single flow direction water inlet pipe 3, avoid on outlet pipe 4 another
It is outer that the return pipe that water is directed to water heater components 1 is set, to substantially reduce the cost of water-heater system 100.
What needs to be explained here is that current water-heater system does not have water return function mostly, before water heater starting, out
Water in water pipe is usually normal-temperature water and can not be heated, and water heater water after starting a period of time can just be heated to need
The temperature wanted, so that during this period of time, the coolant-temperature gage being discharged from hot water outlet is not high.When user is needed using hot water, such as
When user needs bathing, it is common practice to put hot water outlet opening sky, until the temperature of the water flowed out from hot water outlet is suitable
It is just used after preferably.Therefore, water-heater system 100 according to an embodiment of the present invention can greatly save use by being equipped with water return function
Water, and the convenience of user's water can be improved.
Optionally, control valve 51 is located at least using at water spot, here, is least referred to using water spot from water heater components
1 arrives each resistance to water-flow maximum with water spot, is usually least the connecting pipe longest between water heater components 1 using water spot
Use water spot.Such as in the example depicted in fig. 1, water-heater system 100 is set there are four water spot is used, and water inlet pipe 3 uses water at four
Be respectively equipped with a cooling water outlet 31 at point, also be provided with corresponding four hot water outlets 41 on outlet pipe 4, control valve 51 be located at away from
It is farthest from water heater components 1 at water spot.Since the water in water-heater system 100 can realize circulating-heating, work as hot water
Outlet 41 apart from water heater components 1 farther out when, the temperature of water of the hot water outlet 41 outflow also can reach preference temperature.
The operation that water heater components 1 and water pump 52 are controlled by setting controller, can be improved water heater components 1 and water pump
The harmony of 52 operations, avoids energy waste.For example, under the control of the controller, water pump 52 can start to add in water heater components 1
Heat starts after water heater components 1 heat a period of time, and after the proper temperature for the water that hot water outlet 41 flows out, controller can
It is out of service to control water pump 52.
Moreover, the setting of controller can control water heater components 1 and water pump 52 to run within the set time, producer or user
Multiple preheating time sections can be set according to people the daily time using hot water, so that water heater components 1 and water pump 52 are pre-
Operation, so that user can obtain hot water at once when in use, achievees the purpose that instant-heating in section of fixing time.For example, people
Usually bathing in 9 points to ten one this periods at night, therefore the preheating time section on controller may be configured as from night
Eight thirty are to ten one points, so that eight thirty brought into operation at night for water heater components 1 and water pump 52, so that user was in evening on the same day
Hot water can be obtained when 9 bathings immediately.
Optionally, water return function key can be equipped on controller, water return function key is for controlling water pump 52 and water heater components 1
Operation, as a result, user at any time section use hot water when, all can be by pressing water return function key so that water-heater system
The recyclable heating of water in 100, to realize whole day heat supply, instant-heating.
Water-heater system 100 according to an embodiment of the present invention, by being arranged in parallel water pump 52 on water inlet pipe 3, and into
Series control valve 51 between water pipe 3 and outlet pipe 4 is so that water single flow direction water inlet pipe 3 in outlet pipe 4, so that water heater
System 100 has water return function, the recyclable heating of the water in water-heater system 100, and makes any usable heat of water spot
Water.Moreover, 100 pipe laying of water-heater system is simple, cost is not high.By setting controller to control 1 He of water heater components
The operation of water pump 52 can be improved the harmony of the operation of water-heater system 100, avoid energy waste, and can realize and be opened with when water
I.e. hot function.
In some embodiments of the invention, as shown in Figure 1, water-heater system 100 further includes the first check valve 53, first
Check valve 53 and water pump 52 are connected in series and are connected in parallel on water inlet pipe 3, wherein the first check valve 53 can pump out water pump 52
Water be unidirectionally oriented to water heater components 1, as a result, can avoid water pump 52 in aqueous reflux cause water pump 52 damage, to extend water
The service life of pump 52.In addition, water pump 52 can generate certain low pressure when out of service, so that water pump 52 can be from connection water heater
One end of component 1 absorbs water, and the setting of the first check valve 53 can avoid the water flow in water heater components 1 to water pump 52, to guarantee
The normal operation of water-heater system 100.
Further, as shown in Figure 1, water-heater system 100 further includes second one-way valve 54, the series connection of second one-way valve 54 is set
In water inlet pipe 3 suitable at the port that is connected with water source 200, that is to say, that second one-way valve 54 is located at the water source end of water inlet pipe 3
At mouth 32, the one-way conduction on water source 200 to the direction of water inlet pipe 3 of second one-way valve 54.It can avoid adding in water inlet pipe 3 as a result,
Water after heat is flowed out from water source port 32, to reduce the energy consumption of water-heater system 100.
Optionally, control valve 51 is check valve.Cost is relatively low for control valve 51 as a result, and installation is easy.Certainly, of the invention
Without being limited thereto, for example, control valve 51 can also be solenoid valve, solenoid valve is connected with controller, when water pump 52 starts, control valve 51
Open solenoid valve, the water single flow direction water inlet pipe 3 under the driving of water pump 52, in outlet pipe 4.
In some embodiments of the invention, water heater components 1 include a water heater, which is electric heater
12, one of gas heater 11, solar water heater and air energy water heater, are not especially limited here.
In other embodiments of the invention, water heater components 1 are multiple-energy-source heat of mixing hydrophone, that is to say, that hot water
Device assembly 1 may include the water heater of various energy resources type, for example, water heater components 1 may include electric heater 12, gas heater
11, two or more in solar water heater and air energy water heater.
It should be noted that above-mentioned four kinds of water heaters respectively have advantage and disadvantage, therefore the target user of above-mentioned four kinds of water heaters
It is different.By setting multiple-energy-source heat of mixing hydrophone for water heater components 1, so that water-heater system 100 may be adapted to different crowd
Needs, and people can be met to energy-saving and environment-friendly requirement.
In addition, as the improvement of people's living standards, the requirement of hot water is also gradually increased in people, such as amount of hot water
Increase, simultaneously with water increase of water spot etc..Therefore, can be expired using the water-heater system 100 of multiple-energy-source heat of mixing hydrophone
The requirement that the amount of hot water of sufficient user is big, heat supply is fast.
In some embodiments of the invention, as shown in Figure 1, water heater components 1 include gas heater 11 and electricity
Water heater 12.Gas heater 11 has the first water inlet 11A and the first water outlet 11B, water inlet pipe 3 and the first water inlet 11A
It is connected, i.e. the first water inlet 11A constitutes above-mentioned water inlet A.Electric heater 12 has the second water inlet 12A and the second water outlet
12B, the second water inlet 12A are connected with the first water outlet 11B, and the second water outlet 12B is connected with outlet pipe 4, i.e. the second water outlet
12B constitutes above-mentioned water outlet B.Wherein, the water in water inlet pipe 3 is flowed into heat in gas heater 11, in gas heater 11
Water can flow into heating in electric heater 12 and flow into outlet pipe 4 from the second water outlet 12B.
That is, water-heater system 100 is to fire electric complementary type hot-water heating system, wherein gas heater 11 heats rapidly,
Fast supply hot water can be achieved.And the heat production water of electric heater 12 is big, can meet user and largely use water, and electric heater 12
After water preheating with water tank with water storage, therefore in water-heater system 100 is completed and stops circulation, in water-heater system 100
Hot water is largely stored in electric heater 12, so that heat losses are reduced, to further decrease energy consumption.
Specifically, as shown in Figure 1, water-heater system 100 further includes relief valve 55, relief valve 55 is connected on the first water outlet
Between 11B and the second water inlet 12A.Thus, it is ensured that hydraulic pressure is suitable in electric heater 12, to guarantee water-heater system 100
It operates normally.More specifically, relief valve 55 is located at the second water inlet 12A.
Optionally, controller may include the first sub-controller and the second sub-controller, wherein the first sub-controller and water pump
52 electrical connections are to control the on and off of water pump 52.Second sub-controller may be provided on electric heater to control electric heater
Operation.
In one particular embodiment of the present invention, the length of the runing time of water pump 52 can be set by controller, also
It is to say, in controller after predetermined point of time controls water pump 52 and water heater components 1 are run, by setting time, controller control
Water pump 52 processed is out of service, and the runing time of water pump 52 is fixed value.Here, the setting time by need hot water temperature, heat
The factors such as the speed that water and water heater components 1 in water heater system 100 heat determine.
In another specific embodiment of the invention, water-heater system 100 further includes surveying for detecting the first of water temperature
Warm part (not shown go out), the first temperature measuring element is located on water heater components 1 or outlet pipe 4, and controller is electrically connected with the first temperature measuring element
To control the on and off of water pump 52 according to the testing result of the first temperature measuring element.When the water temperature that the first temperature measuring element detects reaches
After first predetermined value, controller control water pump 52 is out of service, so that the water in water-heater system 100 stops circulating-heating.By
This, the water temperature that hot water outlet 41 flows out can be determined, to improve the controllability of water temperature.
Here, the size of first predetermined value can be arranged by controller, and producer or user can set according to actual use demand
Set first predetermined value.It should be noted that the setting of the size of first predetermined value, so that controller control water pump 52 is out of service
When, water heater components 1 still are able to continue constant temperature water supply.
Optionally, the first temperature measuring element is located at the first water outlet 11B.Here, the first temperature measuring element and the first sub-controller phase
Even, when the first temperature measuring element is located at the first water outlet 11B, the first sub-controller can be set adjacent to the first temperature measuring element and water pump 52
It sets, to shorten the length of the connection line between the first temperature measuring element and the first controller, the first controller and water pump 52, is convenient for
Trace arrangements.Certainly, the first temperature measuring element may be alternatively provided on outlet pipe 4, and the first temperature measuring element even may be provided at hot water outlet 41, this
In be not especially limited.
Further, water-heater system 100 further includes the second temperature measuring element for detecting the water temperature in electric heater 12
(not shown go out), controller are electrically connected according to the testing result of the second temperature measuring element control electric heater 12 with the second temperature measuring element
It is on and off.
After the starting of gas heater 11, when the second temperature measuring element detects that the water temperature in electric heater 12 is predetermined lower than second
When value, controller controls electric heater 12 and starts, so that gas heater 11 heats simultaneously with electric heater 12, so that water heater
The temperature of water in system 100 rises rapidly.Later, when the second temperature measuring element detects that the water temperature in electric heater 12 reaches second
When predetermined value, it is out of service that controller controls electric heater 12.Here, the water temperature that outlet pipe 4 is discharged meets user usage requirements
When electric heater 12 in water temperature be second predetermined value.
In a specific example of the invention, when hot water is used, municipal water supply flows to combustion gas by water inlet pipe 3 to user
Water heater 11, gas heater 11 start immediately when having detected that water flows through, and water temperature slowly rises in gas heater 11,
Water after heating a period of time in gas heater 11 reaches setting temperature and constant temperature exports.
When any opening hot water outlet 41 with water spot, the hot water that gas heater 11 exports is flowed from the second water inlet 12A
Enter electric heater 12, when the second temperature measuring element detection water tank water temperature be lower than second predetermined value when, electric heater 12 starting heating until
Water temperature reaches second predetermined value.If the second temperature measuring element detects water tank water temperature more than or equal to second predetermined value, electric heater 12 is not
Starting, hot water directly flow out arrival water spot from second outlet.
When controller sets multiple preheating time sections, controller can control the first temperature measuring element in automatic in preheating time section
Detect water temperature.When the testing result of the first temperature measuring element is lower than first predetermined value, controller controls water pump 52 and starts.Water pump 52 will
Water is pumped into the heating of gas heater 11, and the water after heating is headed into after electric heater 12 by gas heater 11 to be flowed by outlet pipe 4
Water spot is used to each.Water in outlet pipe 4 is in least flowing back to water inlet pipe 3 through control valve 51 using at water spot, the water in water inlet pipe 3
Gas heater 11 is flowed into form circulation by water pump 52 again.Make a reservation for when the testing result of the first temperature measuring element is more than or equal to first
When value, it is out of service that controller controls water pump 52.
In addition, when the testing result that water pump 52 runs the first temperature measuring element of a period of time is always below first predetermined value, control
Device processed deduces water-heater system 100 and goes wrong, and controller can control water pump 52 out of service, and controller can pass through whistle
It warns to user.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means particular features, structures, materials, or characteristics described in conjunction with this embodiment or example
It is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are different
Surely identical embodiment or example is referred to.Moreover, particular features, structures, materials, or characteristics described can be any
It can be combined in any suitable manner in one or more embodiment or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (8)
1. a kind of water-heater system characterized by comprising
Water heater components, the water heater components have inlet and outlet;
Suitable for being connected and having the water inlet pipe of cooling water outlet with water source, one end of the water inlet pipe is connected with the water inlet;
Outlet pipe with hot water outlet, one end of the outlet pipe are connected with the water outlet;
Control valve, the control valve are connected between the other end of the outlet pipe and the other end of the water inlet pipe so that described
Water in outlet pipe unidirectionally flows into the water inlet pipe;
Water pump, the water pump are connected in parallel on the water inlet pipe so that the water in the water inlet pipe is pumped into the water heater group
In part;
Controller, the controller are electrically connected respectively with the water heater components and the water pump to control the water heater respectively
The operation of component and the water pump;Wherein,
The water heater components include:
Gas heater, the gas heater have the first water inlet and the first water outlet, the water inlet pipe and described first
Water inlet is connected;
Electric heater, the electric heater have the second water inlet and the second water outlet, second water inlet and described first
Water outlet is connected, and second water outlet is connected with the outlet pipe;In addition,
The water-heater system further includes relief valve, and the relief valve is connected on first water outlet and second water inlet
Between.
2. water-heater system according to claim 1, which is characterized in that further include the first check valve, described first is unidirectional
Valve and the water pump are connected in series and are connected in parallel on the water inlet pipe.
3. water-heater system according to claim 1, which is characterized in that further include second one-way valve, described second is unidirectional
Valve series connection be located at the water inlet pipe suitable at the port that is connected with the water source at the water source to the side of the water inlet pipe
Upward one-way conduction.
4. water-heater system according to claim 1, which is characterized in that further include the first thermometric for detecting water temperature
Part, first temperature measuring element are located on the water heater components or the outlet pipe, the controller and first temperature measuring element
Electrical connection is to control the on and off of the water pump according to the testing result of first temperature measuring element.
5. water-heater system according to claim 4, which is characterized in that first temperature measuring element is located at first water outlet
At mouthful.
6. water-heater system according to claim 1, which is characterized in that further include for detecting in the electric heater
Second temperature measuring element of water temperature, the controller are electrically connected according to the detection knot of second temperature measuring element with second temperature measuring element
Fruit controls the on and off of the electric heater.
7. water-heater system according to claim 1, which is characterized in that the control valve is check valve.
8. water-heater system according to claim 1, which is characterized in that the controller is equipped with for controlling the water
The water return function key of the operation of pump and the water heater components.
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