CN105627566A - Automatic cold water return device of mechanical water heater - Google Patents
Automatic cold water return device of mechanical water heater Download PDFInfo
- Publication number
- CN105627566A CN105627566A CN201610035166.6A CN201610035166A CN105627566A CN 105627566 A CN105627566 A CN 105627566A CN 201610035166 A CN201610035166 A CN 201610035166A CN 105627566 A CN105627566 A CN 105627566A
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- Prior art keywords
- water
- water heater
- cold water
- fluid passage
- heater
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/12—Arrangements for connecting heaters to circulation pipes
- F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Fluid Heaters (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
The invention provides an automatic cold water return device of a mechanical water heater. The device is characterized by comprising a water pumping machine; the water pumping machine includes a main body; the main body is hollowed, and the left and right two ends are respectively a water outlet end and a water inlet end; the hollowed part of the main body serves as a fluid channel; the cross sectional area of the runner channel is gradually decreased from two ends of the main body to the middle; the main body is provided with a through hole as a water pumping port; the water pumping port is positioned in the place with the minimum cross sectional area of the runner channel, and is communicated with the fluid channel; the water pumping port is connected with a water pumping lead pipe serving as a branch pipe of a hot water pipe of the water heater; and the water outlet end is connected with a water tank of the water heater through a cold water return pipe. The water inlet end is connected with an outlet end of an on-off adjusting valve; an inlet end of the on-off adjusting valve is connected with one end of a branch pipe I; the other end of the branch pipe I is connected with a cold water pipe of the water heater; and a branch pipe II is communicated with a sprinkler switch and the cold water pipe of the water heater. The device realizes automatic return of cold water of the water heater by using a fluid mechanics principle and a mechanical device, and is simple in device and low in investment.
Description
Technical field
The present invention relates to a kind of water heater cold water reflux, particularly to a kind of mechanical type water heater cold water automatic backflow apparatus.
Background technology
Daily life uses the discontinuity hot water occasion that water heater especially family, barber shop, hotel, bath center etc. use shower bath comparatively general, before carrying out bathing, in order to obtain suitable hot water temperature, need to bleed off one section of cold water in pipeline between water heater and bathing head in vain, cause very big water resource waste. At present, increase temperature-detecting device on pipeline is generally needed about water-saving device of water heater, electromagnetic valve is utilized to carry out circulating chilled water utilization, or cold water is carried out post bake by electric heater unit, but the shortcoming of the method is to need some electronic apparatus devices such as reload temperature detecting device on pipeline, putting into relatively big at the beginning of system complex, install and inconvenient with using, while water saving, self needs again power consumption.
Such as Ma Zhiyan in 2014 " design of pot-type boiler cold water automatic water saving device and the application " delivered on " machinery and electronics ", describe a kind of cold water automatic circulation water-saving device used at pot-type boiler, its important technology scheme is the method installing electronic valve on former water-heater system basis additional, achieve recycling of cold water in pipeline, but the shortcoming of the method is to need reload temperature detecting device and solenoid directional control valve on pipeline, put into bigger, electronic equipment and components and parts self need power consumption to add power consumption while making water saving, the complex installation of simultaneity factor and use inconvenience, and there is the risk of electric leakage.
Patent document " is saved water and energy device (patent number: 201310230906) based on the solar water heater of pipeline variable-frequency heating technology ", its main technical schemes is to utilize pipeline variable-frequency heating technology and electromagnetic valve that the cold water in solar water heater water pipe carries out temperature adjustment and heating, but the shortcoming of the method is system complex, power consumption increases, and there is the risk of electric leakage.
Summary of the invention
The present invention provides a kind of mechanical type water heater cold water automatic backflow apparatus, it is therefore an objective to solve prior art problem, it is provided that a kind of device, and without power consumption when, it is achieved that water heater cold water automatic back flow, device is simple, invests little, uses easy to operate.
The problem of this invention address that the technical scheme is that
Mechanical type water heater cold water automatic backflow apparatus, has pumping device, and pumping device includes body, body hollow, respectively water side, two ends, left and right and water inlet end, and its body hollow bulb is as fluid passage; The cross-sectional area of fluid passage tapers into along body two ends to centre; Offering a through hole on body as pump mouth, this pump mouth is positioned at the minimum place of cross-sectional area of fluid passage, and is connected with fluid passage; Whole fluid passage is narrow between the alleviating distention in middle-JIAO of two ends and meets Bernoulli's theorem.
Described pump mouth is connected with the skirt that draws water of the branch road as hot water tube of water heater, and water side is connected with water-heater water tank by cold-water reflux pipe.
Described water inlet end is connected with the port of export of on-off valve regulation valve, and the entrance point of on-off valve regulation valve is connected with arm I one end, and arm I other end connects water heater cold water pipe.
Arm II connects shower nozzle switch and water heater cold water pipe.
When cold water enters in pumping device through on-off valve regulation valve, the pressure at pump mouth place diminishes, and the cold water in hot water tube of water heater is drawn in pumping device.
Preferably, fluid passage is the taper that two tops are oppositely arranged.
Preferably, fluid passage be two tops in opposite directions and symmetrically arranged taper. Purpose is convenient production.
Preferably, the pumping device port of export, entrance point internal diameter with the cross-sectional area of fluid passage the internal diameter ratio at minimum place more than 6. Pump mouth place can be made to produce comparatively ideal pressure reduction, obtain good cold-water reflux effect.
Described on-off valve regulation valve includes shell, and shell offers water inlet and outlet, is provided with spool in shell, and spool top connects valve handle, and valve handle upper end, through housing top end to housing exterior, is provided with a Vertical Spring between spool bottom and shell bottom; Spool top offers limbers, and during pressure spool, this limbers is connected with water inlet, outlet.
When the valve handle pressing on-off valve regulation valve, spool moves down, and spring is compressed, and the limbers of spool turns on the inlet and outlet on shell, and tap water (cold water in instant heating hydrophone cold water pipe) enters pumping device by on-off valve regulation valve. fluid passage within pumping device is that two tapers are arranged symmetrically with, namely two ends, fluid passage cross-sectional area is big, middle cross-sectional area is little, pump mouth is positioned at the minimum place of cross-sectional area, pumping device fluid passage (i.e. pumping device middle), according to fluid mechanics principle, water flowing in pipeline can regard desirable permanent incompressible fluid as, when line cross section amasss big, water velocity is little, cross-sectional area hour, water velocity is big, so when tap water arrives pumping device middle from pumping device water inlet end, the cross-sectional area of fluid passage is from large to small, water velocity is changed from small to big, according to hydrodynamics Bernoulli equation, water velocity becomes big, then pressure diminishes, therefore the pressure at pump mouth place diminishes, under the effect of pressure difference, the cold water retained in the hot water tube of water heater being connected with the skirt that draws water will pass through pump mouth and causes the another port of pumping device. after of short duration conducting is drawn water, spool resets under the elastic force effect of spring, and the water inlet of pumping device blocks, it is achieved thereby that automatic pumping function.
Beneficial effects of the present invention:
1. the present invention utilizes principles of fluid mechanics and mechanical components, without power consumption when, it is achieved that water heater cold water automatic back flow, has saved water source, electric energy.
2. adopt purely mechanic components and parts, it is to avoid the risk of electric leakage.
3. device is simple, invests little, uses easy to operate, uses for noncontinuity the various occasions of water heater to use, has a extensive future.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the main pseudosection of pumping device;
Fig. 3 is the cut-away view of pumping device;
Fig. 4 is A portion enlarged drawing in Fig. 3;
Fig. 5 is the main pseudosection that auto switching regulates valve;
Fig. 6 is the left view profile that auto switching regulates valve.
In figure: 1. pumping device, 10. body, 11. water sides, 12. water inlet ends, 13. fluid passages, 14. passages, 15. pump mouths;
2. hot water tube of water heater, 3. draw water skirt, 4. cold-water reflux pipe, 5. water-heater water tank;
7. on-off valve regulation valve, 70. ports of export, 71. entrance points, 72. shells, 73. water inlets, 74. outlets, 75. spools, 76. valve handles, 77. springs, 78. limbers;
8. water heater cold water pipe, 9. arm I, 20 arm II, 30. shower nozzle switch.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
Mechanical type water heater cold water automatic backflow apparatus as shown in Figure 1, having pumping device 1 (see Fig. 2,3,4), pumping device 1 includes the body 10 of tubulose, body 10 hollow, respectively water side 11, two ends, left and right and water inlet end 12, its body hollow bulb is as fluid passage 13. The cross-sectional area of fluid passage 13 tapers into along body two ends to centre, and therefore fluid passage 13 presents shape narrow between the alleviating distention in middle-JIAO of two ends. In the present embodiment, in two tops in opposite directions and symmetrically arranged taper, similar hourglass, the passage 14 between two tapered tip is part the narrowest in fluid passage 13, is namely the minimum place of cross-sectional area of fluid passage for fluid passage 13. Fluid passage 13 adopts the purpose of this hourglass shape to be convenient processing, can also be actually unsymmetric profile, or shape is abnormity, as long as ensureing that whole body fluid passages is narrow between the alleviating distention in middle-JIAO of two ends and meets Bernoulli's theorem. Body 10 material of pumping device 1 can be metal or plastics.
Offering a through hole on body 10 as pump mouth 15, this pump mouth 15 is positioned at the minimum place of the cross-sectional area of fluid passage 13, is namely opened in passage 14 place, and is connected with fluid passage 13 in the present embodiment.
Described pump mouth 15 is connected with the skirt 3 that draws water of the branch road as hot water tube of water heater 2, and water side 11 is connected with water-heater water tank 5 by cold-water reflux pipe 4.
Described water inlet end 12 is connected with the port of export 70 of on-off valve regulation valve 7, and the entrance point 71 of on-off valve regulation valve is connected with one end of arm I 9, and the other end of arm I 9 is connected with water heater cold water pipe 8.
Arm II 20 connects shower nozzle switch 30 and water heater cold water pipe 8.
The skirt 3 that wherein draws water is connected by mantle fiber with pump mouth 15, the outer threading of water inlet end 12 and water side 11 of pumping device, is connected by screw thread is fixing with on-off valve regulation valve 16. The purpose of on-off valve regulation valve 7 is to conveying cold water in pumping device 1, makes pump mouth 15 place of pumping device 1 produce low pressure, utilizes pressure reduction to be entered in pumping device 1 by the hydraulic pressure in hot water tube of water heater, and then be back in the water tank of water heater.
For ensureing to draw water effect, pump mouth 15 internal diameter is unsuitable excessive, and in the present embodiment, the internal diameter D1 of pumping device water side 11, the internal diameter D2 of water inlet end 12 and the internal diameter D3 ratio of passage 14 (the minimum place of cross-sectional area of fluid passage) are preferably greater than 6. Owing to the fluid passage 13 in the present embodiment is symmetrically arranged taper, namely each cross section is circle, and therefore namely its internal diameter is the diameter of cross section.
On-off valve regulation valve 7 in the present embodiment includes shell 72, see Fig. 5, Fig. 6, shell 72 offers water inlet 73 and outlet 74, spool 75 it is provided with in shell 72, spool top connects valve handle 76, valve handle upper end, through housing top end to housing exterior, is provided with a Vertical Spring 77 between spool bottom and shell bottom; Spool top offers limbers 78, and during pressure spool 75, this limbers 78 is connected with water inlet 73, outlet 74. It practice, the structure of on-off valve regulation valve 7 achieves the auto switching of fluid conveying in the present embodiment, except the structure provided in the present embodiment, can also is that the valve of other structures, such as common controlled valve, but fluid needs artificial shutoff, and currency and the water yield are wayward.
The work process of this device is as described below: tap water is entered water-heater water tank 5 by water heater cold water pipe 3 and is heated to predetermined temperature, and the water retained in non-working condition lower water-heater hot-water line 2 is cold water. Before using water heater, press the valve handle 76 of on-off valve regulation valve 7, spring 77 is compressed, spool 75 moves down, limbers 76 and the water inlet 73 of shell 72, outlet 74 turn on, and tap water (cold water in instant heating hydrophone cold water pipe) is by entering pumping device 1 after arm I 9 and on-off valve regulation valve 7. According to fluid mechanics principle, the water flowing in pipeline can regard desirable permanent incompressible fluid as, and when the cross-sectional area of channel interior passage is big, water velocity is little, sectional area hour, and water velocity is big. Owing to the inside of pumping device 1 is in two ends width, middle narrow shape, after water enters the body of pumping device from water inlet end, along with the cross-sectional area of fluid passage is gradually reduced, its water velocity becomes larger, when arriving the middle of pumping device, the cross-sectional area of its fluid passage reaches minimum, and water velocity also reaches maximum. According to hydrodynamics Bernoulli equation, the water velocity of pumping device middle becomes greatly compared with water inlet end, therefore causes that pressure diminishes, and namely the middle pressure of pumping device is lower than pressure in hot water tube of water heater 2. Under pressure difference effect, the cold water in hot water tube of water heater 2 is caused the water side 11 of pumping device through the skirt 3 that draws water by pump mouth 15, and flows out through cold-water reflux pipe 13 from water side 11 and enter water-heater water tank 5. After of short duration conducting is drawn water, unclamp valve handle 76, spool 75 is reset to labelling point under the elastic force effect of spring 77, the water inlet of pumping device 1 blocks, pumping action stops, through drawing water circulation, the cold water retained in hot water tube of water heater 2 has all been back in water-heater water tank 5, hot water in water-heater water tank 5 enters in hot water tube of water heater 2 under the effect of pressure reduction, as long as now opening shower nozzle switch 30, temperature regulates hot water or cold water as required, and the water that sprinkler head flows out can use, it is achieved thereby that automatic pumping function.
Valve handle 76 in on-off valve regulation valve 7, shell 72, spool 75 material be preferably rustless steel or copper, rational gap should be kept between spool 75 and shell 72, can slidably be advisable with water-tight with spool 75, the material of spring 77 is preferably rustless steel, the damped coefficient of spring according to spool 75 Mass Calculation, should should ensure that and exhaust cool water quantity required time in hot water tube of water heater 2 recovery time of spring. If the damped coefficient type selecting of spring is less, can grow by valve handle more than 76 seconds, if water outlet is still cold water, repeatable press valve handle 76 once.
The present invention utilizes principles of fluid mechanics and mechanical components, without power consumption when, it is achieved that water heater cold water automatic back flow, device is simple, invests little, uses easy to operate, various occasions noncontinuity being used to water heater can use, and has a extensive future.
Claims (5)
1. mechanical type water heater cold water automatic backflow apparatus, it is characterised in that: having pumping device, pumping device includes body, body hollow, respectively water side, two ends, left and right and water inlet end, and its body hollow bulb is as fluid passage; The cross-sectional area of fluid passage tapers into along body two ends to centre; Offering a through hole on body as pump mouth, this pump mouth is positioned at the minimum place of cross-sectional area of fluid passage, and is connected with fluid passage;
Described pump mouth is connected with the skirt that draws water of the branch road as hot water tube of water heater, and water side is connected with water-heater water tank by cold-water reflux pipe;
Described water inlet end is connected with the port of export of on-off valve regulation valve, and the entrance point of on-off valve regulation valve is connected with arm I one end, and arm I other end connects water heater cold water pipe;
Arm II connects shower nozzle switch and water heater cold water pipe;
When cold water enters in pumping device through on-off valve regulation valve, the pressure at pump mouth place diminishes, and the cold water in hot water tube of water heater is drawn in pumping device.
2. mechanical type water heater cold water automatic backflow apparatus as described in claim 1, it is characterised in that: fluid passage is the taper that two tops are oppositely arranged.
3. as described in claim 2 mechanical type water heater cold water automatic backflow apparatus, it is characterised in that: fluid passage be two tops in opposite directions and symmetrically arranged taper.
4. as described in claim 3 mechanical type water heater cold water automatic backflow apparatus, it is characterised in that: the pumping device port of export, entrance point internal diameter with the cross-sectional area of fluid passage the internal diameter ratio at minimum place more than 6.
5. mechanical type water heater cold water automatic backflow apparatus as described in claim 1, it is characterized in that: described on-off valve regulation valve includes shell, shell offers water inlet and outlet, spool it is provided with in shell, spool top connects valve handle, valve handle upper end, through housing top end to housing exterior, is provided with a Vertical Spring between spool bottom and shell bottom; Spool top offers limbers, and during pressure spool, this limbers is connected with water inlet, outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035166.6A CN105627566B (en) | 2016-01-19 | 2016-01-19 | Mechanical water heater cold water automatic backflow apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035166.6A CN105627566B (en) | 2016-01-19 | 2016-01-19 | Mechanical water heater cold water automatic backflow apparatus |
Publications (2)
| Publication Number | Publication Date |
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| CN105627566A true CN105627566A (en) | 2016-06-01 |
| CN105627566B CN105627566B (en) | 2018-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610035166.6A Active CN105627566B (en) | 2016-01-19 | 2016-01-19 | Mechanical water heater cold water automatic backflow apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106679152A (en) * | 2016-07-09 | 2017-05-17 | 西北工业大学 | Instantaneous gas water heater |
| CN113090765A (en) * | 2021-03-29 | 2021-07-09 | 尚川（北京）水务有限公司 | Constant liquid level water outlet control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN113090765A (en) * | 2021-03-29 | 2021-07-09 | 尚川（北京）水务有限公司 | Constant liquid level water outlet control device |
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|---|---|
| CN105627566B (en) | 2018-10-26 |
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