CN105627566B - Mechanical water heater cold water automatic backflow apparatus - Google Patents

Mechanical water heater cold water automatic backflow apparatus Download PDF

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Publication number
CN105627566B
CN105627566B CN201610035166.6A CN201610035166A CN105627566B CN 105627566 B CN105627566 B CN 105627566B CN 201610035166 A CN201610035166 A CN 201610035166A CN 105627566 B CN105627566 B CN 105627566B
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China
Prior art keywords
water
fluid channel
pumping
valve
ontology
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CN201610035166.6A
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CN105627566A (en
Inventor
杨红昌
李海
薛汝才
邱枫
张学深
吕志来
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BEIJING XUJI ELECTRIC Co Ltd
State Grid Corp of China SGCC
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BEIJING XUJI ELECTRIC Co Ltd
State Grid Corp of China SGCC
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Priority to CN201610035166.6A priority Critical patent/CN105627566B/en
Publication of CN105627566A publication Critical patent/CN105627566A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H9/00Details
    • F24H9/12Connecting heaters to circulation pipes
    • F24H9/122Connecting heaters to circulation pipes for water heaters

Abstract

The present invention provides a kind of mechanical water heater cold water automatic backflow apparatus, it is characterised in that:With pumping device, pumping device includes ontology, and ontology is hollow, and left and right ends are respectively water outlet and water inlet end, and ontology hollow portion is as fluid channel;The cross-sectional area of fluid channel is tapered into along ontology both ends to centre;A through-hole is opened up on ontology as pump mouth, which is located at the cross-sectional area minimum of fluid channel, and is connected with fluid channel;Pump mouth is connected with the skirt that draws water of the branch as hot water tube of water heater, and water outlet is connected by cold-water reflux pipe with water-heater water tank.Water inlet end is connected with the outlet end of on-off valve regulation valve, and the input end of on-off valve regulation valve is connected with I one end of branch pipe, and I other end of branch pipe connects water heater cold water pipe;Branch pipe II is connected to shower nozzle switch and water heater cold water pipe.The present invention realizes water heater cold water automatic back flow using fluid mechanics principle and mechanical components under the conditions of no power consumption, and device is simple, and investment is small.

Description

Mechanical water heater cold water automatic backflow apparatus
Technical field
The present invention relates to a kind of water heater cold water reflux, more particularly to a kind of mechanical water heater cold water automatic back flow Device.
Background technology
It is more general using shower bath using water heater especially family, barber shop, hotel, bath center etc. in daily life Time discontinuity hot water occasion, carry out bathing before, in order to obtain suitable hot water temperature, need water heater and bathing head Between one section of cold water in pipeline bleed off in vain, cause prodigious water resource waste.Currently, about water-saving device of water heater It generally needs to increase temperature-detecting device on pipeline, circulating chilled water utilization or electric heater unit pair is carried out using solenoid valve Cold water carries out reheating, but the disadvantages of this method is to need several electronic apparatus such as reload temperature detection device on pipeline Device, system complex just put into it is larger, installation and with it is inconvenient for use, itself needed again while water-saving consumption electric power.
As Ma Zhiyan in 2014 exists《Machinery and electronics》On deliver《Pot-type boiler cold water automatic water saving device design and Using》, a kind of cold water automatic circulation water-saving device used in pot-type boiler is described, important technology scheme is in former heat The method for installing electronic valve on the basis of water heater system additional, realizes recycling for cold water in pipeline, but the disadvantages of this method It is to need reload temperature detection device and solenoid directional control valve on pipeline, input is larger, and electronic equipment and component itself need Power consumption, the complex installation of simultaneity factor and risk inconvenient for use, and there is electric leakage are increased while power consumption makes water-saving.
Patent document " save water and energy device (patent number by the solar water heater based on pipeline variable-frequency heating technology: 201310230906) ", main technical schemes are using pipeline variable-frequency heating technology and solenoid valve to solar water heater water pipe In cold water adjust and heat into trip temperature, but the disadvantages of this method is system complex, and power consumption increases, and there is the wind of electric leakage Danger.
Invention content
The present invention provides a kind of mechanical water heater cold water automatic backflow apparatus, it is therefore an objective to solve prior art problem, carry For a kind of device, under the conditions of no power consumption, water heater cold water automatic back flow is realized, device is simple, and investment is small, uses operation side Just.
The present invention solve the problems, such as the technical solution adopted is that:
Mechanical water heater cold water automatic backflow apparatus, has pumping device, and pumping device includes ontology, and ontology is hollow, left and right Both ends are respectively water outlet and water inlet end, and ontology hollow portion is as fluid channel;The cross-sectional area of fluid channel is along ontology two It holds to centre and tapers into;A through-hole is opened up on ontology as pump mouth, which is located at the cross-sectional area of fluid channel most Small place, and be connected with fluid channel;Entire fluid channel is narrow in the wide centre in both ends and meets Bernoulli's theorem.
The pump mouth is connected with the skirt that draws water of the branch as hot water tube of water heater, and water outlet passes through cold-water reflux Pipe is connected with water-heater water tank.
The water inlet end is connected with the outlet end of on-off valve regulation valve, input end and the I one end phase of branch pipe of on-off valve regulation valve Connection, I other end of branch pipe connect water heater cold water pipe.
Branch pipe II is connected to shower nozzle switch and water heater cold water pipe.
When cold water is entered through on-off valve regulation valve in pumping device, the pressure at pump mouth becomes smaller, in hot water tube of water heater Cold water be drawn into pumping device.
Preferably, fluid channel is in the taper that two tops are oppositely arranged.
Preferably, fluid channel is opposite in two tops and symmetrically arranged taper.Purpose is to facilitate production.
Preferably, the internal diameter at the cross-sectional area minimum of pumping device outlet end, the internal diameter of input end and fluid channel is than big In 6.It can make to generate comparatively ideal pressure difference at pump mouth, obtain preferable cold-water reflux effect.
The on-off valve regulation valve includes shell, and inlet and outlet are offered on shell, spool, spool are equipped in shell Top connects valve handle, and valve handle upper end passes through housing top end to shell exterior, and it is perpendicular that one is equipped between spool bottom end and shell bottom end To spring;Spool top offers limbers, and when depressing spool, which is connected with water inlet, water outlet.
When the valve handle for pressing on-off valve regulation valve, spool moves down, and spring is compressed, on the limbers and shell of spool Inlet and outlet is connected, and tap water (cold water in hot water device cold water pipe) enters pumping device by on-off valve regulation valve.Due to taking out Fluid channel inside hydrophone is arranged symmetrically in two tapers, i.e., fluid channel both ends cross-sectional area is big, middle cross-sectional area Small, pump mouth is located at pumping device fluid channel cross-sectional area minimum (i.e. pumping device middle), according to fluid mechanics principle, pipe Water flowing in road can regard ideal permanent incompressible fluid as, and when line cross section product is big, water velocity is small, and cross-sectional area is small When, water velocity is big, so when tap water reaches pumping device middle from pumping device water inlet end, the cross-sectional area of fluid channel From large to small, water velocity is changed from small to big, and according to hydrodynamics Bernoulli equation it is found that water velocity becomes larger, then pressure becomes smaller, Therefore the pressure at pump mouth becomes smaller, and under the action of pressure difference, is retained in the hot water tube of water heater being connected with the skirt that draws water Cold water will pass through the another port that pump mouth is led to pumping device.After of short duration conducting is drawn water, spool is made in the elastic force of spring With lower reset, pumping device into water blocking, to realize automatic pumping function.
Beneficial effects of the present invention:
1. the present invention realizes water heater using principles of fluid mechanics and mechanical components under the conditions of no power consumption Cold water automatic back flow has saved water source, electric energy.
2. using purely mechanic component, the risk of electric leakage is avoided.
3. device is simple, investment is small, and use is easy to operate, and noncontinuity can be made using the various occasions of water heater With having a extensive future.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention;
Fig. 2 is the main view sectional view of pumping device;
Fig. 3 is the internal structure chart of pumping device;
Fig. 4 is the portions A enlarged drawing in Fig. 3;
Fig. 5 is the main view sectional view of auto switching regulating valve;
Fig. 6 is the left view sectional view of auto switching regulating valve.
In figure:1. pumping device, 10. ontologies, 11. water outlets, 12. water inlet ends, 13. fluid channels, 14. channels, 15. are drawn water Mouthful;
2. hot water tube of water heater, 3. are drawn water skirt, 4. cold-water reflux pipes, 5. water-heater water tanks;
7. on-off valve regulation valve, 70. outlet ends, 71. input ends, 72. shells, 73. water inlets, 74. water outlets, 75. spools, 76. valve handle, 77. springs, 78. limbers;
8. water heater cold water pipe, 9. branch pipes I, 20 branch pipes II, 30. shower nozzle switchs.
Specific implementation mode
The present invention is described in further details below in conjunction with the drawings and specific embodiments.
Mechanical water heater cold water automatic backflow apparatus as shown in Figure 1, has pumping device 1 (see Fig. 2,3,4), draws water Device 1 includes the ontology 10 of tubulose, and ontology 10 is hollow, and left and right ends are respectively water outlet 11 and water inlet end 12, ontology hollow portion As fluid channel 13.The cross-sectional area of fluid channel 13 is tapered into along ontology both ends to centre, therefore fluid channel 13 is in The narrow shape in the existing wide centre in both ends.In the present embodiment, fluid channel 13 is opposite in two tops and symmetrically arranged taper, similar Hourglass, the channel 14 between two tapered tips are part most narrow in fluid channel 13, be the cross-sectional area of fluid channel most Small place.Fluid channel 13 is to facilitate processing using the purpose of this hourglass shape, actually can also be unsymmetric profile, or Shape is abnormity, as long as ensureing that entire body fluid passages are narrow in the wide centre in both ends and meet Bernoulli's theorem.Pumping device 1 10 material of ontology can be metal or plastics.
A through-hole is opened up on ontology 10 as pump mouth 15, which is located at the cross-sectional area of fluid channel 13 most Small place is opened at channel 14 in the present embodiment, and is connected with fluid channel 13.
The pump mouth 15 is connected with the skirt 3 that draws water of the branch as hot water tube of water heater 2, and water outlet 11 is by cold Water return duct 4 is connected with water-heater water tank 5.
The water inlet end 12 is connected with the outlet end 70 of on-off valve regulation valve 7, input end 71 and the branch pipe I of on-off valve regulation valve 9 one end is connected, and the other end of branch pipe I 9 is connected with water heater cold water pipe 8.
Branch pipe II 20 is connected to shower nozzle switch 30 and water heater cold water pipe 8.
The skirt 3 that wherein draws water is connect with pump mouth 15 by mantle fiber, the 11 outer mantle fiber of water inlet end 12 and water outlet of pumping device Button, is fixedly connected with on-off valve regulation valve 16 by screw thread.The purpose of on-off valve regulation valve 7 is to make pumping to conveying cold water in pumping device 1 Low pressure is generated at the pump mouth 15 of hydrophone 1, is entered the hydraulic pressure in hot water tube of water heater in pumping device 1 using pressure difference, and then is flowed back To the water tank of water heater.
To ensure to draw water effect, 15 internal diameter of pump mouth should not be too large, and in the present embodiment pumping device water outlet 11 internal diameter D1, the internal diameter D2 of water inlet end 12 and the internal diameter D3 ratios in channel 14 (at the cross-sectional area minimum of fluid channel) are preferably greater than 6.Due to this Fluid channel 13 in embodiment is symmetrically arranged taper, i.e., each cross section is circle, therefore its internal diameter is transversal The diameter in face.
On-off valve regulation valve 7 in the present embodiment includes shell 72, sees Fig. 5, Fig. 6,73 He of water inlet is offered on shell 72 Water outlet 74, shell 72 is interior to be equipped with spool 75, and spool top connects valve handle 76, and valve handle upper end passes through outside housing top end to shell Portion is equipped with a Vertical Spring 77 between spool bottom end and shell bottom end;Spool top offers limbers 78, depresses spool 75 When, which is connected with water inlet 73, water outlet 74.In fact, the structure of on-off valve regulation valve 7 is realized in the present embodiment The auto switching of fluid conveying in addition to the structure provided in the present embodiment can also be the valve of other structures, such as common Controlled valve, but fluid needs artificial shutdown, currency and water not easy to control.
The course of work of the device is as described below:Tap water enters water-heater water tank 5 by water heater cold water pipe 8 and is added For heat to predetermined temperature, the water retained in non-working condition lower water-heater hot-water line 2 is cold water.Using water heater it Before, the valve handle 76 of on-off valve regulation valve 7 is pressed, spring 77 is compressed, and spool 75 moves down, the water inlet of limbers 76 and shell 72 Mouth 73, water outlet 74 are connected, and tap water (cold water in hot water device cold water pipe) after branch pipe I 9 and on-off valve regulation valve 7 by entering Pumping device 1.According to fluid mechanics principle, the water flowing in pipeline can regard ideal permanent incompressible fluid as, and channel interior is logical When the cross-sectional area in road is big, water velocity is small, and sectional area hour, water velocity is big.Since the inside of pumping device 1 is in both ends Wide, intermediate narrow shape gradually subtracts after the ontology that water enters pumping device from water inlet end with the cross-sectional area of fluid channel Small, water velocity becomes larger, and when reaching the middle of pumping device, the cross-sectional area of fluid channel reaches minimum, water Flow velocity degree also reaches maximum.According to hydrodynamics Bernoulli equation, the water velocity of pumping device middle becomes compared with water inlet end Greatly, therefore pressure is caused to become smaller, i.e., the middle pressure of pumping device is less than pressure in hot water tube of water heater 2.It is acted in pressure difference Under, cold water in hot water tube of water heater 2 is led to the water outlet 11 of pumping device through drawing water skirt 3 by pump mouth 15, and from water outlet 11, which flow out through cold-water reflux pipe 13, enters water-heater water tank 5.After of short duration conducting is drawn water, valve handle 76 is unclamped, spool 75 exists Be reset to mark point under the elastic force effect of spring 77, pumping device 1 into water blocking, pumping action stops, by cycle of drawing water, heat The cold water retained in hydrophone hot-water line 2 has all been back in water-heater water tank 5, and the hot water in water-heater water tank 5 is in pressure difference Under the action of enter in hot water tube of water heater 2, as long as opening shower nozzle switch 30 at this time, temperature as needed adjusts hot water or cold water and is Can, the water of sprinkler head outflow can be used, to realize automatic pumping function.
The material of valve handle 76, shell 72, spool 75 in on-off valve regulation valve 7 is preferably stainless steel or copper, spool 75 and shell Rational gap should be kept between 72, with spool 75 can it is free to slide and it is water-tight be advisable, the material of spring 77 is preferably stainless steel, The damped coefficient of spring should be should ensure that according to 75 Mass Calculation of spool, the recovery time of spring exhaust it is cold in hot water tube of water heater 2 The time required to water.If the damped coefficient type selecting of spring is smaller, can long-press valve handle more than 76 seconds repeated if water outlet is still cold water It is primary to press valve handle 76.
It is cold to realize water heater under the conditions of no power consumption using principles of fluid mechanics and mechanical components by the present invention Water automatic back flow, device is simple, and investment is small, and use is easy to operate, can using the various occasions of water heater for noncontinuity It uses, has a extensive future.

Claims (3)

1. mechanical water heater cold water automatic backflow apparatus, it is characterised in that:With pumping device, pumping device includes ontology, ontology Hollow, left and right ends are respectively water outlet and water inlet end, and ontology hollow portion is as fluid channel;The cross-sectional area of fluid channel It is tapered into centre along ontology both ends, the taper being oppositely arranged in two tops;A through-hole is opened up on ontology as pump mouth, The pump mouth is located at the cross-sectional area minimum of fluid channel, and is connected with fluid channel;
The pump mouth is connected with the skirt that draws water of the branch as hot water tube of water heater, water outlet by cold-water reflux pipe with Water-heater water tank is connected;
The water inlet end is connected with the outlet end of on-off valve regulation valve, and the input end of on-off valve regulation valve is connected with I one end of branch pipe, I other end of branch pipe connects water heater cold water pipe;
Branch pipe II is connected to shower nozzle switch and water heater cold water pipe;
When cold water is entered through on-off valve regulation valve in pumping device, the pressure at pump mouth becomes smaller, cold in hot water tube of water heater Water is drawn into pumping device;
The on-off valve regulation valve includes shell, and inlet and outlet are offered on shell, spool, spool top are equipped in shell Valve handle is connected, valve handle upper end passes through housing top end to shell exterior, and a vertical bullet is equipped between spool bottom end and shell bottom end Spring;Spool top offers limbers, and when depressing spool, which is connected with water inlet, water outlet.
2. mechanical water heater cold water automatic backflow apparatus as described in claim 1, it is characterised in that:Fluid channel is in two A top is opposite and symmetrically arranged taper.
3. mechanical water heater cold water automatic backflow apparatus as described in claim 2, it is characterised in that:Pumping device exports Internal diameter ratio at the cross-sectional area minimum at end, the internal diameter of input end and fluid channel is more than 6.
CN201610035166.6A 2016-01-19 2016-01-19 Mechanical water heater cold water automatic backflow apparatus Active CN105627566B (en)

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CN106679152A (en) * 2016-07-09 2017-05-17 西北工业大学 Instantaneous gas water heater
CN106482345A (en) * 2016-09-28 2017-03-08 西北工业大学 A kind of energy-saving and water-saving auxiliary device of storage-type electric water heater

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