CN114623595A

CN114623595A - Gas water heater

Info

Publication number: CN114623595A
Application number: CN202210353518.8A
Authority: CN
Inventors: 裴英翔
Original assignee: Beijing Yingxiang Bori Refractories Technology Co ltd
Current assignee: Beijing Yingxiang Bori Refractories Technology Co ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-06-14

Abstract

The invention discloses a gas water heater, which comprises a water tank, wherein the water tank is provided with a water inlet and a water outlet, and a cold water diversion tank, a first heat exchange unit, a warm water confluence tank, a second heat exchange unit and a hot water collecting tank are sequentially arranged in the water tank from the water inlet to the water outlet. The gas water heater of the invention is different from the traditional 'fire-in-water' structure, and adopts the water tank to collect water for heating instead of pipeline water running for heating, except the burner, the water wall is formed by all sections of water tanks, thus forming a heating mode of 'water-in-water' fire, thus after the hot water switch is temporarily stopped, a certain amount of hot water and warm water are still stored in the water tank, and the hot water and the warm water can not be quickly emptied or cooled down like pipeline water running, when the hot water switch is turned on, the hot water and the warm water in the water tank can be firstly output, and the phenomenon of short-time cold water can not be generated.

Description

Gas water heater

Technical Field

The invention relates to the technical field of water heaters, in particular to a gas water heater.

Background

After the existing gas water heater is suspended from outputting hot water, if the output hot water is restarted, a section of cold water flows out in a short time. The reason for this is that the existing gas water heater uses a pipe to supply water, and the pipe wraps the heat exchanger heated by gas to form a "water in fire" structure. After cold water enters the pipeline, the cold water is subjected to heat exchange through the heat exchanger and then hot water is output, after the water outlet switch is closed, the water in the pipeline is basically emptied, at the moment, the gas valve of the burner is closed, and the combustion is stopped. When the water outlet switch is turned on again, the burner starts to work again, and part of cold water which enters the pipeline newly is heated by the burner and then is output to the water outlet, and the temperature of the part of cold water is low, so that the problem of delay of hot water output is caused.

Therefore, the invention is provided.

Disclosure of Invention

The invention aims to provide a gas water heater, which can not output cold water for a short time after a hot water outlet switch is turned on again.

In order to solve the above problems, an embodiment of the present invention provides a gas water heater, which includes a water tank, wherein the water tank is provided with a water inlet and a water outlet, and a cold water diversion box, a first heat exchange unit, a warm water confluence box, a second heat exchange unit and a hot water collection box are sequentially arranged in the water tank from the water inlet to the water outlet.

Furthermore, the second heat exchange unit comprises a combustor and a heating pipe arranged above the combustor, one end of the heating pipe is communicated with the warm water header tank, and the other end of the heating pipe is communicated with the hot water header tank; the burner and the heating pipe are externally provided with a shell for isolating water in the water tank so as to construct a chamber for accommodating the heating pipe and the burner.

Further, first heat exchange unit includes the heat exchanger tube bank of multichannel interval arrangement, heat exchanger tube bank's one end with the cavity intercommunication is in order to receive and comes from the flue gas of cavity, heat exchanger tube bank's the other end connect the chimney in order with will the flue gas is discharged.

Further, the heat exchange tube bundle is communicated with the chimney through a smoke collection box arranged on the cold water diversion box.

Furthermore, a plurality of fins are arranged on the outer wall of the heating pipe.

Further, the heating pipe is arranged horizontally.

Furthermore, a plurality of fins are arranged on the inner wall of the heat exchange tube bundle.

Further, the heat exchange tube bundle is vertically arranged.

Furthermore, the cold water diversion box, the first heat exchange unit, the warm water confluence box, the second heat exchange unit and the hot water header tank are arranged according to the S-shaped trend.

Compared with the prior art, the invention has the following beneficial effects: the gas water heater is different from the traditional 'fire-in-water' structure, the water tank is adopted to collect water for heating instead of pipeline water running for heating, the water wall formed by all sections of water tanks except the burner forms a heating mode of 'water-in-water' fire, therefore, after the hot water switch is temporarily stopped, a certain amount of hot water and warm water are still stored in the water tank, the water tank cannot be quickly emptied or cooled as the pipeline water running, and when the hot water switch is started, the hot water and the warm water in the water tank can be output firstly, and the phenomenon that a section of cold water flows out firstly can not be generated. In addition, the invention has three temperature sections of cold water, warm water and hot water, and the temperature difference is transited smoothly, so that the phenomenon of condensate water generation at the joint of the cold water and the hot water of the traditional gas water heater pipeline is avoided.

Drawings

FIG. 1 is a schematic structural diagram of a gas water heater provided by an embodiment of the invention;

in the figure: 1-a burner; 2-heating a tube; 3-a heat exchange tube bundle; 4-a smoke collection box; 5, a chimney; 6-water inlet; 7-a cold water channel; 8-cold water diversion tank; 9-warm water confluence box; 10-heating pipe water inlet; 11-hot water header tank; 12-a water outlet; 13-a fin; 100-water tank.

Detailed Description

The principles and spirit of the present invention will be described with reference to a number of exemplary embodiments shown in the drawings. It should be understood that these embodiments are described only to enable those skilled in the art to better understand and to implement the present invention, and are not intended to limit the scope of the present invention in any way.

Referring to fig. 1, an embodiment of the present invention provides a gas water heater including a water tank 100, in this embodiment, the water tank 100 is substantially cubic, but may take other suitable shapes.

The water tank 100 is provided with the water inlet 6 and the delivery port 12, and in this embodiment, the water inlet 6 is disposed on the side of the upper portion of the water tank 100, and the delivery port 12 is disposed on the other side of the bottom of the water tank 100, that is, the water inlet 6 and the delivery port 12 are diagonally disposed with respect to the main body of the water tank 100, so that each part and unit inside the water tank 100 can be conveniently disposed in the S direction, and the structure of the gas water heater is more compact.

A cold water channel 7, a cold water diversion box 8, a first heat exchange unit, a warm water confluence box 9, a second heat exchange unit and a hot water header tank 11 are sequentially arranged in the water tank 100 from the water inlet 6 to the water outlet 12. As mentioned above, the above components and units may be arranged in an S-shaped direction, so that the water tank 100 does not occupy too much space in a single direction in the vertical or horizontal direction, and is more compact and reasonable, and the installation space is saved. Specifically, the cold water channel 7, the cold water diversion tank 8, the warm water confluence tank 9, and the hot water collection tank 11 are sequentially communicated. The first heat exchange unit is arranged at the junction between the cold water diversion box 8 and the warm water confluence box 9, and the second heat exchange unit is arranged at the junction between the warm water confluence box 9 and the hot water collection box 11.

In this embodiment, the second heat exchanging unit includes a burner 1 and a heating pipe 2 disposed above the burner 1, wherein the structure of the burner 1 and its accessory components is the same as that of the existing gas water heater, and the description is omitted here. One end of the heating pipe 2 is communicated with a warm water confluence tank 9 through a heating pipe water inlet 10, and the other end of the heating pipe is communicated with a hot water collection tank 11; the burner 1 and the heating pipe 2 are externally provided with a housing for insulation from water in the water tank 100 to construct a chamber accommodating the heating pipe 2 and the burner 1 and form a part of the water wall.

The first heat exchange unit comprises a plurality of heat exchange tube bundles 3 arranged at intervals, one end of each heat exchange tube bundle 3 is communicated with the cavity to receive smoke from the cavity, and the other end of each heat exchange tube bundle 3 is connected with a chimney 5 to discharge the smoke. The outside of the heat exchange tube bundle 3 is the junction of a cold water diversion box 8 and a warm water confluence box 9.

In some embodiments, the heat exchange tube bundle 3 is communicated with the chimney 5 through a smoke collection box 4 arranged at the cold water diversion box 8. Because the flue gas in the invention is subjected to heat exchange twice (once heating pipe 2 and once heat exchange pipe bundle 3), the temperature of the flue gas after heat exchange is lower than that of the traditional one-time heat exchange (can be lower than 60 ℃ through engineering tests), so that plastic pipelines can be considered for the chimney 5 and the smoke collection box 4, the cost is lower than that of metal pipelines, and the chemical stability is easier to maintain

Be equipped with a plurality of fins 13 on the outer wall of heating pipe 2 to improve heating efficiency, preferably, heating pipe 2 is the level and arranges, what utilize when the fin 13 of outer wall perpendicular to outer wall sets up like this is the outside vertical space of heating pipe 2, and can not occupy horizontal space, and space utilization is higher.

The preferred inner fin heat exchanger tube bundle that adopts of heat exchanger tube bundle 3 is equipped with a plurality of fins (not shown in the figure) promptly at heat exchanger tube bundle 3's inner wall to improve heat exchange efficiency, preferably, heat exchanger tube bundle 3 is vertical layout, and the fin of 3 inside of heat exchanger tube bundles just so can only occupy 3 inside spaces of heat exchanger tube bundles, and need not occupy 3 outside horizontal spaces of heat exchanger tube bundles, thereby can set up heat exchanger tube bundle 3 more in order to improve heat exchange efficiency.

When the gas water heater provided by the invention works, cold water enters the cold water diversion tank 8, then exchanges heat with the heat exchange tube bundle 3 to become warm water, enters the warm water confluence tank 9, then enters the heating tube 2 to be heated to become hot water, enters the hot water collection tank 11, and finally is discharged out of the hot water outlet 12. Flue gas generated by the combustor 1 is firstly used for heating the heating pipe 2, then upwards enters the heat exchange pipe bundle 3 for exchanging heat with cold water, and finally is discharged out of the gas water heater through the smoke collection box 4 and the chimney 5.

The gas water heater of the invention is different from the traditional 'fire-in-water' structure, but adopts the water tank to collect water for heating instead of pipeline water running for heating, except the burner 1, the water wall is formed by all sections of water tanks, thus forming a heating mode of 'water-in-water' fire, therefore, after the hot water switch is temporarily stopped, a certain amount of hot water and warm water are still stored in the water tank, and the water tank can not be quickly emptied or cooled down as the pipeline water running, when the hot water switch is started, the hot water and the warm water in the water tank can be firstly output, and the phenomenon that a section of short-time cold water flows out firstly can not be generated. In practical application, the energy-saving device replaces the existing additional energy-saving device, and directly reaches the first-level energy-saving standard.

The inventive concept is explained in detail herein using specific examples, which are given only to aid in understanding the core concepts of the invention. It should be understood that any obvious modifications, equivalents and other improvements made by those skilled in the art without departing from the spirit of the present invention are included in the scope of the present invention.

Claims

1. The gas water heater is characterized by comprising a water tank, wherein the water tank is provided with a water inlet and a water outlet, and a cold water diversion box, a first heat exchange unit, a warm water confluence box, a second heat exchange unit and a hot water collecting tank are sequentially arranged in the water tank from the water inlet to the direction of the water outlet.

2. The gas water heater according to claim 1, wherein the second heat exchange unit comprises a burner and a heating pipe arranged above the burner, one end of the heating pipe is communicated with the warm water header tank, and the other end of the heating pipe is communicated with the hot water header tank; and the outer parts of the burner and the heating pipe are provided with shells for isolating water in the water tank so as to construct a chamber for accommodating the heating pipe and the burner.

3. The gas water heater of claim 2, wherein the first heat exchange unit includes a plurality of spaced heat exchange tube bundles, one end of the heat exchange tube bundles is in communication with the chamber for receiving the flue gas from the chamber, and the other end of the heat exchange tube bundles is connected to a chimney for exhausting the flue gas.

4. The gas water heater of claim 3, wherein the heat exchange tube bundle is in communication with the chimney through a smoke collection box disposed in the cold water diversion box.

5. The gas water heater of claim 2, wherein the outer wall of the heating tube has a plurality of fins.

6. The gas water heater of claim 5, wherein the heating tube is horizontally disposed.

7. The gas fired water heater of claim 3, wherein the inner wall of said heat exchanger tube bundle is provided with a plurality of fins.

8. The gas water heater of claim 7, wherein the heat exchanger tube bundle is vertically disposed.

9. The gas water heater of claim 1, wherein the cold water diversion tank, the first heat exchange unit, the warm water confluence tank, the second heat exchange unit and the hot water collection tank are arranged in an S-shaped orientation.