CN1308631C - Liquid supply pipe capable of preventing backflow - Google Patents
Liquid supply pipe capable of preventing backflow Download PDFInfo
- Publication number
- CN1308631C CN1308631C CNB2004100327683A CN200410032768A CN1308631C CN 1308631 C CN1308631 C CN 1308631C CN B2004100327683 A CNB2004100327683 A CN B2004100327683A CN 200410032768 A CN200410032768 A CN 200410032768A CN 1308631 C CN1308631 C CN 1308631C
- Authority
- CN
- China
- Prior art keywords
- sleeve pipe
- hollow tube
- liquid
- liquid supply
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 88
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 64
- 239000008400 supply water Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000000739 chaotic effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Images
Classifications
-
- 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
- F24H9/133—Storage heaters
Landscapes
- 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)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention discloses a liquid supply pipe capable of preventing backflow, which comprises a hollow pipe body used for conveying liquid to a liquid container and a sleeve sleeved on the outer periphery of the hollow pipe body, wherein one end of the hollow pipe body is inserted into the liquid container, the other end of the hollow pipe body is connected with other liquid supply devices in a sealing mode, at least one small hole is formed in the periphery of the pipe wall of the hollow pipe body, the small hole is located on the outer upper portion of the liquid container and is coated in the sleeve, one end of the sleeve is connected with the outer periphery of the hollow pipe body in a sealing mode, the other end of the sleeve is connected with the liquid container in a sealing mode, and the other end of the sleeve is communicated with the inside of the liquid container. After the supply pipe is used, if the liquid supply is stopped suddenly, gas can enter the hollow pipe body through the small hole to break the siphon, so that the liquid can be effectively prevented from flowing backwards.
Description
Technical field
The present invention relates to a kind of hollow pipe fitting that is used to carry liquid, more particularly, relate to a kind of any position that is fit to be arranged on the liquid vessel top, and available buffer fluid pressure and prevent the supply pipe that liquid take place to flow backwards.
Background technology
Generally use along with storage type water heater (as: electric heater), and find that progressively this kind water heater has following weak point, promptly when water system stops to supply water suddenly, because air pressure can cause the water of flue inside flow backwards (siphon principle), and the heater of flue inside is still working at this moment, be easy to burn out heater, even whole water heater.
For this reason, occurred at present part on the market and can prevent that the water heater that flows backwards takes place sealing, and an one way stop peturn valve or anti-vacuum valve are installed by the big portion of the water heater with this kind function in water system, promptly when water system stops to supply water suddenly, can control the refluence of water or enter outside air by one way stop peturn valve by anti-vacuum valve place, destroy siphon, with balance water system and electric heater gas inside pressure, thereby can prevent that the water in the water heater from flowing backwards, increase the service life of water heater.But this kind adopts the water heater of one way stop peturn valve or anti-vacuum valve, after long-term the use, because one way stop peturn valve and the very easily precipitated thing of anti-vacuum valve, silt, incrustation scale stop up, and when the spool of one way stop peturn valve and anti-vacuum valve and valve base sealing performance be worn destroy after, the non-return performance will lose efficacy, and as untimely replacing, the above-mentioned refluence situation of mentioning can take place still, and the complex structure of one way stop peturn valve and anti-vacuum valve, use cost is higher.
In addition, at present a kind ofly utilize aperture to destroy siphon principle to prevent the water heater that flows backwards also having occurred on the market, as disclosed electric heater in the Chinese patent the 93100584.1st, but thisly simply utilize anti-backflow structure that aperture destroys siphon principle in use also to exist to add easily to cause man-hour water-supply-pipe to destroy, can't cushion many shortcomings such as hydraulic pressure and anti-backflow poor effect.
For this reason, the creator among the present invention relies on it to be engaged in the experience and the practice of relevant industries for many years, and through concentrating on studies and developing, create finally a kind of less scaling, damage, and have that imitating prevents to flow backwards, and the liquid supply tube of function takes place.This liquid supply tube can not produce any noise in use, has the function of buffering hydraulic pressure simultaneously.
Summary of the invention
The main purpose that can prevent the liquid supply tube that flows backwards among the present invention is in order to solve that liquid supply tube in the existing water heater easily takes place to stop up in use for some time and problem that the refluence phenomenon takes place.
The secondary objective that can prevent the liquid supply tube that flows backwards among the present invention is to exist processing to be difficult for and can't cushion hydraulic pressure in order to solve the existing liquid supply tube that adopts the aperture principle to realize the anti-backflow purpose, and causes the chaotic problem of hot and cold water operation.
Can prevent among the present invention that the liquid supply tube that flows backwards from including one and being used for carrying the hollow tube and of liquid to be set in the sleeve pipe of described hollow tube outer peripheral edges toward the liquid vessel, one end of described hollow tube is inserted into liquid vessel inside, the other end and other liquid supplying apparatus are tightly connected, this hollow tube is provided with an aperture at least at the periphery of its tube wall, this aperture is positioned at the outer top of described liquid vessel, be covered by the inside of described sleeve pipe simultaneously, and an end of described sleeve pipe and the outer peripheral edges of described hollow tube are tightly connected, the other end and described liquid vessel are tightly connected, and are connected with described liquid vessel inside.
Described hollow tube is and erectly passes described sleeve pipe, and is connected with described bobbin seal.
Described hollow tube is an angle of 90 degrees, and laterally passes described sleeve pipe, is connected with described bobbin seal.
Described hollow tube is cut into two sections at described inside pipe casing, and wherein one section is inserted into described liquid vessel inside, the other end with extend outer and other liquid supplying apparatus of described sleeve pipe and be tightly connected.
One end of described sleeve pipe is tightly connected by the mode of welding and the outer peripheral edges of described hollow tube, and between sleeve pipe and described hollow tube, form a gap that is communicated with outside air, simultaneously, the other end of described sleeve pipe also is fixed on the described liquid vessel by the mode of welding, and is connected with liquid vessel inside.
The material of described sleeve pipe and hollow tube is stainless steel material or rush-resisting material.
Described hollow tube is provided with screw thread or draw-in groove at the end that it is connected with extraneous liquid delivery system.
Described sleeve pipe includes the space of a sealing, and be provided with two can be respectively and described two sections through holes that hollow tube is tightly connected.
One through hole of described one section hollow tube and described sleeve pipe is tightly connected, and extends into described inside pipe casing, is provided with the aperture that can select to be located at side or top on this extends into the tube wall of inside pipe casing, and another hollow tube is connected with another through hole of described sleeve pipe.
Described hollow tube be connected with the through hole whorl of described sleeve pipe or described hollow tube and described sleeve pipe one-body molded.
Liquid supply tube among the present invention mainly is to destroy siphon by means of the aperture that is located on the hollow tube tube wall periphery, to prevent that liquid from flowing backwards, slow down aperture water speed impulse force by means of the sleeve pipe that is located at the hollow tube outer peripheral edges simultaneously, make the liquid that enters in the liquid vessel comparatively steady, can not take place chaotic with the liquid in the liquid vessel.
Description of drawings
Fig. 1 is the generalized section of inner container of electric water heater when liquid supply tube is applied to the vertical type electric heater in the embodiment of the invention one;
Fig. 2 is the perspective exploded view of liquid supply tube in the embodiment of the invention one;
Fig. 3 is the generalized section of liquid supply tube in the embodiment of the invention one;
Fig. 4 is another user mode schematic diagram of liquid supply tube in the embodiment of the invention one;
Fig. 5 is the generalized section of inner container of electric water heater when liquid supply tube is applied to the pressure-bearing type electric heater in the embodiment of the invention two;
Fig. 6 is the generalized section of inner container of electric water heater when liquid supply tube is applied to the pressure-bearing type electric heater in the embodiment of the invention three;
Fig. 7 is the perspective exploded view of liquid supply tube in the embodiment of the invention three;
Fig. 8 is the generalized section of liquid supply tube in the embodiment of the invention three.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment among the present invention is described in further detail.
The present invention is to be example liquid supply tube is applied in the electric heater, but in this mandatory declaration a bit, can prevent among the present invention that promptly the liquid supply tube that flows backwards also can be applicable to be not limited thereto in other similar liquid vessel.
Embodiment one
As shown in Figure 1 to Figure 3, the vertical type electric heater includes an inner bag 1, be provided with an electric heater unit 10 (as: electrothermal tube) in the inside of inner bag 1, simultaneously be outside equipped with a temperature-sensitive sleeve pipe 11, a temperature and pressure unloading valve 12 at its sidewall, wherein, the structure of temperature-sensitive sleeve pipe 11 is open in Chinese patent the 97222382.7th, and temperature and pressure unloading valve 12 are commercially available matured product, and one of technical scheme that neither the present invention desired to deal with problems is so no longer elaborate at this.
As shown in Figure 1, the inner bag 1 of electric heater is respectively equipped with a delivery port 13 and a water inlet 14 at its top, wherein is plugged with a liquid supply tube 2 of being made by stainless steel material or rush-resisting material at water inlet 14 places.This liquid supply tube 2 includes and patches the sleeve pipe 22 that is set in these hollow tube 20 outer peripheral edges into the hollow tube 20 and of inner bag 1 inner and through inner bag 1 bottom always, and this hollow tube 20 can cooperate the flow of product and function to be provided with the caliber size of sleeve pipe 22.
Wherein, the other end of hollow tube 20 extends the electric heater top, and is tightly connected by its top (can be screw thread 21, also other structures such as draw-in groove) and other water system, so that water is input in the electric heater 1.As shown in Figure 4, the bottom that also hollow tube 20 bendings can be extended to inner bag 1 is connected with extraneous other water system again, and simultaneously, the delivery port 13 of water heater also can be located at the bottom of inner bag 1.
Hollow tube 20 is positioned at the top of inner bag 1 at it, at least offer an aperture 25 on the tube wall of sleeve pipe 22 inside and (be four in the present embodiment, the quantity of this aperture can rationally be provided with according to the volume and the capacity of water heater, simultaneously, hollow tube, the caliber of sleeve pipe and aperture and diameter also can be adjusted according to the volume and the capacity of water heater, so that the pressure of inside and outside liquid of balance water heater and gas), to be symmetrically distributed to good, when passing through hollow tube 20 toward inner bag 1 private water supply, part water flows out from aperture 25, at this moment, be unlikely to aperture 25 is stopped up by means of the impulse force of water, when water system stops to supply water, make inner bag 1 gas inside enter into water system inside by aperture 25, inner bag 1 keeps balance with the air pressure of water system inside, aperture 25 top, thereby the destruction siphon guarantees the safe handling of electric heater.In addition, not only be provided with an aperture 25 on the liquid supply tube 2,, increase its service life even, guarantee the safe handling of electric heater with also destroying siphon after a certain aperture obstruction by another aperture.
In addition, liquid supply tube 2 in the present embodiment is by means of the sleeve pipe 22 that is located at inner bag 1 top, for aperture 25 reserves the impulse force space, make the water eliminated behind the impulse force along the gap between casing wall and the hollow tube 20 24 inflow inner bags 1, with the overheated water in gentle inner bag 1 top.Simultaneously, owing to after the water in the water system enters into sleeve pipe 22, increased sectional area, thereby can slow down water speed and reduce impulse force.
Embodiment two
As shown in Figure 5, liquid supply tube 2 among this embodiment two is applied in the pressure-bearing type electric heater, this electric heater also include an inner bag 1, be provided with an electric heater unit 10 (as: electrothermal tube) in the inside of inner bag 1, simultaneously be outside equipped with a temperature-sensitive sleeve pipe 11, a temperature and pressure unloading valve 12 at its sidewall, because identical among the structure of electric heater and the embodiment one is the disposing way difference, so no longer elaborate.
As shown in Figure 5, in the present embodiment liquid supply tube 2 substantially with embodiment one in identical, its difference is that an end of hollow tube 20 stretches out from a side of sleeve pipe 22, is tightly connected with other water system again, is applicable to the pressure-bearing type water heater.
Embodiment three
Extremely shown in Figure 8 as Fig. 6, liquid supply tube 2 among this embodiment also is applied to the pressure-bearing type water heater, identical among pressure-bearing type water heater and the embodiment two wherein, and liquid supply tube 2 is that the hollow tube among the embodiment two 20 is cut into two sections in sleeve pipe 22 inside, wherein an end of one section hollow tube 201 directly inserts inner bag 1 inside, and through inner bag 1 bottom, the bottom of the other end and sleeve pipe 22 integrally formed (also can be tightly connected) by other structures such as screw thread or draw-in groove and sleeve pipe 22.
One end of another section hollow tube 202 is tightly connected by the through hole 26 on connected modes such as welding, screw thread, draw-in groove and sleeve pipe 22 sidewalls, the other end and other water system are tightly connected, and utilize this liquid supply tube 2 to form the passage of a sealing between water heater liner 1 and water system.As shown in Figure 6, the end that hollow tube 202 is connected with sleeve pipe 22 also can extend into sleeve pipe 22 inside, and on its tube wall, be provided with a plurality of apertures 25, so can make hollow tube 202 interior liquid rush at each tube wall of sleeve pipe 22, the water speed that effectively slows down cushions hydraulic pressure, the water that enters in the sleeve pipe 22 is entered in the inner bag 1 reposefully along hollow tube 201, make the hydraulic pressure that enters inner bag 1 bottom steady, can not make cold water produce fierce mixing, guarantee the constant temperature output of hot water with hot water.
In sum, the liquid supply tube among the present invention has following advantage:
1. by means of aperture design, and aperture is positioned at the top of inner bag, thereby can guarantee water in the inner bag phenomenon that can not flow backwards.
2. by means of the impulse force of current, and be unlikely to allow impurity such as incrustation scale stop up aperture, guarantee the unimpeded of aperture.
3. by means of the design of sleeve pipe, can effectively reduce the flow velocity and the impulse force of water, simultaneously, can be back to from the water that aperture flows out in the inner bag, with the overheated water temperature in gentle inner bag top.
4. the effectively buffering liquid pressure that can not flow backwards in the phenomenon of the water in guaranteeing inner bag prevents the confusion of cold water and hot water.
In addition; though above-mentioned a plurality of preferred embodiments among the present invention are described; but can not be as protection scope of the present invention; promptly should be understood that to those skilled in the art; do not breaking away from variation and the modification that to make equivalence under the design spirit of the present invention to it; therefore, every not breaking away from the equivalence variation of having done under the design spirit of the present invention and modification, all should think to fall into protection scope of the present invention.
Claims (10)
1. liquid supply tube that can prevent to flow backwards, it is characterized in that: include one and be used for carrying the hollow tube and of liquid to be set in the sleeve pipe of described hollow tube outer peripheral edges toward the liquid vessel, one end of described hollow tube is inserted into liquid vessel inside, the other end and other liquid supplying apparatus are tightly connected, this hollow tube is provided with an aperture at least at the periphery of its tube wall, this aperture is positioned at the outer top of described liquid vessel, be covered by the inside of described sleeve pipe simultaneously, and an end of described sleeve pipe and the outer peripheral edges of described hollow tube are tightly connected, the other end and described liquid vessel are tightly connected, and are connected with described liquid vessel inside.
2. the liquid supply tube that flows backwards according to preventing described in the claim 1 is characterized in that: described hollow tube is and erectly passes described sleeve pipe, and is connected with described bobbin seal.
3. the liquid supply tube that flows backwards according to preventing described in the claim 1, it is characterized in that: described hollow tube is an angle of 90 degrees, and laterally passes described sleeve pipe, is connected with described bobbin seal.
4. the liquid supply tube that flows backwards according to preventing described in the claim 3, it is characterized in that: described hollow tube is cut into two sections at described inside pipe casing, wherein one section is inserted into described liquid vessel inside, the other end with extend outer and other liquid supplying apparatus of described sleeve pipe and be tightly connected.
5. according to any described liquid supply tube that prevents to flow backwards in the claim 1 to 3, it is characterized in that: an end of described sleeve pipe is tightly connected by the mode of welding and the outer peripheral edges of described hollow tube, and between sleeve pipe and described hollow tube, form a gap that is communicated with outside air, simultaneously, the other end of described sleeve pipe also is fixed on the described liquid vessel by the mode of welding, and is connected with liquid vessel inside.
6. according to any described liquid supply tube that prevents to flow backwards in the claim 1 to 4, it is characterized in that: the material of described sleeve pipe and hollow tube is stainless steel material or rush-resisting material.
7. according to any described liquid supply tube that prevents to flow backwards in the claim 1 to 4, it is characterized in that: described hollow tube is provided with screw thread or draw-in groove at the end that it is connected with extraneous liquid delivery system.
8. the liquid supply tube that flows backwards according to preventing described in the claim 4 is characterized in that: described sleeve pipe includes the space of a sealing, and be provided with two can be respectively and described two sections through holes that hollow tube is tightly connected.
9. the liquid supply tube that flows backwards of preventing described in according to Claim 8, it is characterized in that: a through hole of described one section hollow tube and described sleeve pipe is tightly connected, and extend into described inside pipe casing, be provided with the aperture that is fit to any direction on this extends into the tube wall of inside pipe casing, another hollow tube is connected with another through hole of described sleeve pipe.
10. the liquid supply tube that flows backwards according to preventing described in the claim 9 is characterized in that: described hollow tube be connected with the through hole whorl of described sleeve pipe or described hollow tube and described sleeve pipe one-body molded.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HK03102794.1 | 2003-04-17 | ||
| HK03102794A HK1054663A2 (en) | 2003-04-17 | 2003-04-17 | Backflow-preventive liquid supply pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1550730A CN1550730A (en) | 2004-12-01 |
| CN1308631C true CN1308631C (en) | 2007-04-04 |
Family
ID=30130382
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003101003329A Withdrawn CN1538120A (en) | 2003-04-17 | 2003-10-14 | Liquid supply pipe capable of preventing backflow |
| CNB2004100327683A Expired - Fee Related CN1308631C (en) | 2003-04-17 | 2004-04-16 | Liquid supply pipe capable of preventing backflow |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003101003329A Withdrawn CN1538120A (en) | 2003-04-17 | 2003-10-14 | Liquid supply pipe capable of preventing backflow |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN1538120A (en) |
| HK (1) | HK1054663A2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HK1054663A2 (en) * | 2003-04-17 | 2003-11-21 | Hang Tat Kwok | Backflow-preventive liquid supply pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094152A (en) * | 1993-01-10 | 1994-10-26 | 郭振华 | Electric heater |
| JPH08291940A (en) * | 1995-04-21 | 1996-11-05 | Matsushita Electric Ind Co Ltd | Electric water heater |
| CN2294460Y (en) * | 1997-04-22 | 1998-10-14 | 国家建筑材料工业局苏州混凝土水泥制品研究院 | Device for measuring volume of additional supply from external source |
| GB2333145A (en) * | 1998-01-13 | 1999-07-14 | Imi Waterheating Ltd | Storage waterheater with cold water overflow |
| CN1538120A (en) * | 2003-04-17 | 2004-10-20 | 升隆贸易有限公司 | Liquid supply pipe capable of preventing backflow |
-
2003
- 2003-04-17 HK HK03102794A patent/HK1054663A2/en not_active IP Right Cessation
- 2003-10-14 CN CNA2003101003329A patent/CN1538120A/en not_active Withdrawn
-
2004
- 2004-04-16 CN CNB2004100327683A patent/CN1308631C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094152A (en) * | 1993-01-10 | 1994-10-26 | 郭振华 | Electric heater |
| JPH08291940A (en) * | 1995-04-21 | 1996-11-05 | Matsushita Electric Ind Co Ltd | Electric water heater |
| CN2294460Y (en) * | 1997-04-22 | 1998-10-14 | 国家建筑材料工业局苏州混凝土水泥制品研究院 | Device for measuring volume of additional supply from external source |
| GB2333145A (en) * | 1998-01-13 | 1999-07-14 | Imi Waterheating Ltd | Storage waterheater with cold water overflow |
| CN1538120A (en) * | 2003-04-17 | 2004-10-20 | 升隆贸易有限公司 | Liquid supply pipe capable of preventing backflow |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1538120A (en) | 2004-10-20 |
| CN1550730A (en) | 2004-12-01 |
| HK1054663A2 (en) | 2003-11-21 |
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