CN210241998U - Zero-cold-water gas water heater with expansion water tank - Google Patents
Zero-cold-water gas water heater with expansion water tank Download PDFInfo
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- CN210241998U CN210241998U CN201920982979.5U CN201920982979U CN210241998U CN 210241998 U CN210241998 U CN 210241998U CN 201920982979 U CN201920982979 U CN 201920982979U CN 210241998 U CN210241998 U CN 210241998U
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Abstract
The utility model discloses a zero cold water gas heater with expansion tank, including the water heater casing, upper portion in this casing is equipped with a combustion chamber, and the top and the play tobacco pipe of this combustion chamber say the intercommunication, and the lower part and an air supply fan of this combustion chamber are linked together, just the location is equipped with a heat exchanger in the combustion chamber, and this heat exchanger includes the heat-transfer pipe, the cold water entrance and the cold water inlet channel intercommunication of heat-transfer pipe, and the hot water exit and the hot water outlet conduit intercommunication of this heat-transfer pipe are equipped with a side branch pipeline of intercommunication with it on this cold water inlet channel or the hot water outlet conduit, and this side branch pipeline communicates with an expansion tank's inlet opening. The device simple structure, it is convenient to realize, and the water pressure effect is showing in the stable heating system.
Description
Technical Field
The utility model relates to a gas heater especially relates to a zero cold water gas heater who is equipped with expansion tank, belongs to gas utensil technical field.
Background
The traditional gas water heater has a disadvantage when being used by consumers, namely, when hot water is used, a section of cold water between the water heater and a water tap needs to be discharged, and the hot water cannot be discharged immediately. In order to solve the technical problem, water heater manufacturers begin to push out zero-cold-water gas water heaters, and the principle of the zero-cold-water gas water heaters is that a circulating water pump is additionally arranged on a traditional gas water heater to circularly heat cold water from the water heater to a section of a faucet in advance, so that hot water is available when a consumer opens the faucet, and the effect of instantly outputting hot water is achieved. When the zero-cold-water gas water heater of the type is adopted, the water volume in the water heater system can be increased when hot water is heated, and when no part of expansion amount is contained in a closed water pipe in the water heater, the water pressure in the heat supply system can be obviously increased, so that the normal operation of the gas water heater can be influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a zero cold water gas heater who is equipped with expansion tank, it is through the water route system dress at the water heater and establish expansion tank, thereby reducible system leads to the water pressure fluctuation that water volume expansion arouses because of the water in the airtight water pipe of heating, can improve the security and the reliability of system operation.
The technical scheme of the utility model is that:
the zero-cold-water gas water heater with the expansion water tank comprises a water heater shell, wherein a combustion chamber is arranged at the upper part in the shell, the top of the combustion chamber is communicated with a smoke outlet pipeline, the lower part of the combustion chamber is communicated with an air supply fan, a heat exchanger is positioned in the combustion chamber and comprises a heat transfer pipe, a cold water inlet of the heat transfer pipe is communicated with a cold water inlet pipeline, a hot water outlet of the heat transfer pipe is communicated with a hot water outlet pipeline, a side branch pipeline communicated with the cold water inlet pipeline or the hot water outlet pipeline is arranged on the cold water inlet pipeline or the hot water outlet pipeline, and the side branch pipeline is communicated with a water inlet hole of the expansion water tank.
The further technical scheme is as follows:
the expansion water tank comprises a water tank shell, wherein a rubber membrane is positioned in the water tank shell and divides the interior of the water tank shell into an independent and closed air cavity and a water cavity, the water inlet hole is formed in the water cavity, an inflation hole is formed in the air cavity, and 0.07-0.13MPa of inert gas is filled in the air cavity.
The inflation hole is a conventional valve inside riveted on one side of the air cavity.
A plurality of guide strips protruding out of the surface of the rubber film and arranged at intervals are arranged on one side surface of the rubber film facing the water cavity along the water flow entering direction.
Two adjacent guide strips which are discontinuously arranged are arranged in a staggered way.
The guide strips are arranged on one side surface of the rubber membrane facing the water cavity in a fan-shaped structure from top to bottom.
The side branch pipeline is communicated with the hot water outlet pipeline or the cold water inlet pipeline through a three-way valve, and the pipe diameter of the side branch pipeline is smaller than that of the hot water outlet pipeline or the cold water inlet pipeline.
The expansion water tank is communicated with a hot water outlet pipeline through a bypass pipeline.
The utility model has the beneficial technical effects that: the gas water heater is connected with an expansion water tank on a cold water inlet pipeline or a hot water outlet pipeline through a bypass pipeline, and when water in a heating water pipeline system of the water heater is heated and expands in volume, the water can enter a water cavity of the expansion water tank through the bypass pipeline; meanwhile, a plurality of guide strips protruding out of the surface of the rubber film, arranged at intervals and arranged discontinuously are arranged on the rubber film of the expansion water tank towards one side surface of the water cavity along the water flow entering direction and used for reducing the resistance of water flowing into and out of the water cavity.
Drawings
FIG. 1 is a schematic structural view of the zero-cooling water gas water heater of the present invention;
fig. 2 is a schematic perspective view of the expansion tank of the present invention;
fig. 3 is a schematic structural view of the front side of the expansion tank of the present invention;
fig. 4 is a schematic side view of the expansion tank of the present invention;
FIG. 5 is a schematic structural view of the arrangement of the guide strips on the rubber membrane of the present invention;
wherein:
1-a water heater shell; 2-a combustion chamber; 3-smoke outlet pipeline; 4-air supply fan; 5-heat transfer tubes; 6-hot water inlet pipe; 7-a cold water outlet pipeline; 8-a by-pass line; 9-an expansion water tank; 901-water tank shell; 902-rubber membrane; 903-air cavity; 904-water chamber; 905-a water inlet hole; 906-inflation holes; 907-guide bar.
Detailed Description
In order to make the technical means of the present invention clearer and to implement the present invention according to the content of the specification, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples, which are used for illustrating the present invention and are not intended to limit the scope of the present invention.
The embodiment of the invention discloses a zero-cold-water gas water heater with an expansion water tank. The gas water heater comprises a water heater shell 1, wherein a combustion chamber 2 is arranged at the upper part in the shell, the top of the combustion chamber is communicated with a smoke outlet pipeline 3, the smoke outlet pipeline is used for discharging smoke to the outside, the lower part of the combustion chamber is communicated with an air supply fan 4, and the air supply fan is used for supplying fresh air into the combustion chamber; and a gas pipeline is arranged in the shell and communicated with the combustion chamber for providing gas for the combustion chamber.
Positioned in said combustion chamber is a heat exchanger comprising a heat transfer tube 5 in which a flowable heat transfer medium, typically water, is arranged. The cold water inlet of the heat transfer pipe 5 is communicated with a cold water inlet pipe 7, the hot water outlet of the heat transfer pipe is communicated with a hot water outlet pipe 6, the cold water inlet pipe or the hot water outlet pipe is provided with a side branch pipe 8 communicated with the cold water inlet pipe or the hot water outlet pipe, the side branch pipe is communicated with a water inlet hole 905 of an expansion water tank 9, namely, the expansion water tank 9 is connected with the cold water inlet pipe or the hot water outlet pipe through the side branch pipe, and more preferably, the expansion water tank 9 is communicated with the hot water outlet pipe through the side branch pipe. The side branch pipeline 8 can be communicated with the hot water outlet pipeline or the cold water inlet pipeline through a three-way valve, and the pipe diameter of the side branch pipeline 8 is smaller than that of the hot water outlet pipeline or the cold water inlet pipeline.
The specific structure of the expansion water tank 9 is as follows: the expansion tank 9 comprises a tank housing 901 in which a rubber membrane 902 is positioned, which separates the interior of the tank housing into an independent and closed air cavity 903 and a water cavity 904. The water cavity is provided with a water inlet 905 which is communicated with a side branch pipeline 8 and can allow expanded water in a waterway system of the hot water supply device to flow into or out of the water cavity, and the connection between the water inlet and the side branch pipeline can adopt a threaded connection mode, namely, corresponding internal threads and external threads are arranged at the water inlet and the side branch pipeline and are connected together through threads; the gas cavity is provided with a gas charging hole 906 for charging gas with a certain pressure into the gas cavity, wherein the gas with a certain pressure is inert gas with a pressure of 0.07-0.13MPa, and the inert gas is generally nitrogen. The inflation hole 906 is a conventional valve core riveted to one side of the gas chamber body that enables easy gas transfer between the interior and exterior of the gas chamber. In the embodiment, the expansion water tank is arranged on the hot water outlet pipeline, gas with certain pressure is pre-filled at one side of the air cavity of the expansion water tank, and the pre-filled gas enables the pressure at one side of the air cavity to be balanced with the pressure at one side of the water cavity. When the gas water heater starts to work for heating, the water temperature in the water pipeline system rises, so that the water volume is expanded, the pressure value in the water cavity is greater than the pressure value in the air cavity, the expanded water volume is pressed to the rubber membrane, and the water flows into the water cavity of the expansion water tank from the hot water outlet pipeline through the bypass pipeline, so that the pressure in the water pipeline system of the water heater is reduced, and the pressure in the gas water heater is kept normal; when the heating is stopped or the water temperature is reduced, the water volume is gradually retracted, the pressure value is recovered to be normal, and at the moment, as a certain pressure exists in the gas cavity and the rubber membrane has certain elasticity, the water entering the water cavity due to expansion is discharged out of the water cavity of the expansion water tank, so that a good pressure balance effect is achieved. However, in this process, because the rubber membrane is a rubber sheet structure with certain elasticity, when the water is discharged out of the water cavity, a part of air is discharged at the same time, sometimes the rubber membrane is attached to the inner side wall of the water cavity, so that a large resistance is generated when the water is discharged into the water cavity next time, and the balance of the water pressure in the heating system cannot be rapidly realized.
In order to solve the above problem, the rubber membrane 902 of the expansion tank 9 of the present application is provided with a plurality of guide bars 907 protruding out of the surface of the rubber membrane, arranged at intervals and arranged discontinuously along the water flow entering direction on one side surface of the water cavity, wherein the adjacent two guide bars 907 arranged discontinuously are arranged in a staggered manner. All the guide strips 907 are arranged on one side of the rubber membrane facing the water cavity in a fan-shaped structure from top to bottom. The guide strips are protruded on the side surface of the rubber membrane, and a concave groove for water to pass through is formed between every two adjacent guide strips, so that an uneven surface is formed between the rubber membrane and the inner side wall of the water cavity of the expansion water tank, and the problem of overlarge water flow resistance caused by over-tight fit between the rubber membrane and the inner side wall of the expansion water tank can be prevented; in addition, the interval gib block is crisscross arranges, all gib blocks are fan-shaped structure and arrange, all are favorable to reducing the resistance when this expansion tank of rivers business turn over in the gas heater water route pipeline.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a zero cold water gas heater who is equipped with expansion tank, includes water heater casing (1), and the upper portion in this casing is equipped with a combustion chamber (2), and the top and the play tobacco pipe way (3) intercommunication of this combustion chamber, the lower part and a supply-air fan (4) of this combustion chamber are linked together, just the location is equipped with a heat exchanger in the combustion chamber, and this heat exchanger includes heat-transfer pipe (5), its characterized in that: the cold water inlet of the heat transfer pipe is communicated with a cold water inlet pipeline (7), the hot water outlet of the heat transfer pipe is communicated with a hot water outlet pipeline (6), a side branch pipeline (8) communicated with the cold water inlet pipeline or the hot water outlet pipeline is arranged on the cold water inlet pipeline or the hot water outlet pipeline, and the side branch pipeline is communicated with a water inlet hole (905) of an expansion water tank (9).
2. The zero-cold-water gas water heater with an expansion tank as claimed in claim 1, wherein: the expansion water tank (9) comprises a water tank shell (901), a rubber membrane (902) is positioned in the water tank shell and divides the interior of the water tank shell into an independent and closed air cavity (903) and a water cavity (904), wherein the water inlet (905) is arranged on the water cavity, an inflation hole (906) is formed in the air cavity, and 0.07-0.13MPa of inert gas is filled in the air cavity.
3. The zero-cold-water gas water heater with an expansion tank as claimed in claim 2, wherein: the inflation hole (906) is a conventional valve core riveted on one side of the air cavity.
4. The zero-cold-water gas water heater with an expansion tank as claimed in claim 2, wherein: a plurality of guide strips (907) which protrude out of the surface of the rubber film and are arranged at intervals and arranged discontinuously are arranged on one side surface of the rubber film (902) facing the water cavity along the water flow entering direction.
5. The zero-cold-water gas water heater with an expansion tank as claimed in claim 4, wherein: the guide strips (907) which are arranged discontinuously at two adjacent positions are arranged in a staggered way.
6. The zero-cold-water gas water heater with an expansion tank as claimed in claim 4, wherein: the guide strips (907) are arranged on one side surface of the rubber film facing the water cavity in a fan-shaped structure from top to bottom.
7. The zero-cold-water gas water heater with an expansion tank as claimed in claim 1, wherein: the side branch pipeline (8) is communicated with the hot water outlet pipeline or the cold water inlet pipeline through a three-way valve, and the pipe diameter of the side branch pipeline (8) is smaller than that of the hot water outlet pipeline or the cold water inlet pipeline.
8. The zero-cold-water gas water heater with an expansion tank of claim 7, wherein: the expansion water tank (9) is communicated with a hot water outlet pipeline through a bypass pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920982979.5U CN210241998U (en) | 2019-06-27 | 2019-06-27 | Zero-cold-water gas water heater with expansion water tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920982979.5U CN210241998U (en) | 2019-06-27 | 2019-06-27 | Zero-cold-water gas water heater with expansion water tank |
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| Publication Number | Publication Date |
|---|---|
| CN210241998U true CN210241998U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920982979.5U Active CN210241998U (en) | 2019-06-27 | 2019-06-27 | Zero-cold-water gas water heater with expansion water tank |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520912A (en) * | 2020-04-08 | 2020-08-11 | 吴小洪 | Zero-cold-water heater system |
| CN113932442A (en) * | 2021-10-29 | 2022-01-14 | 慈溪市格仕尼电器有限公司 | Small electric water heater for kitchen |
-
2019
- 2019-06-27 CN CN201920982979.5U patent/CN210241998U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520912A (en) * | 2020-04-08 | 2020-08-11 | 吴小洪 | Zero-cold-water heater system |
| CN111520912B (en) * | 2020-04-08 | 2021-06-15 | 江苏诺温特热能设备有限公司 | Zero-cold-water heater system |
| CN113932442A (en) * | 2021-10-29 | 2022-01-14 | 慈溪市格仕尼电器有限公司 | Small electric water heater for kitchen |
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