CN112833534A

CN112833534A - Gas water heater

Info

Publication number: CN112833534A
Application number: CN202110023338.9A
Authority: CN
Inventors: 王菲; 徐德明; 张鑫; 王旺旺; 沈文权
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-05-25

Abstract

The invention discloses a gas water heater, which comprises a shell, wherein a smoke gas cavity is formed in the shell, a heat insulation cavity is also arranged on part of the inner side wall of the shell and is positioned between the smoke gas cavity and the inner side wall of the shell, a first communication port and a second communication port are arranged on the heat insulation cavity, the first communication port is communicated with the heat insulation cavity and the outside, and the second communication port is communicated with the heat insulation cavity and the smoke gas cavity. According to the gas water heater provided by the invention, the heat insulation cavity is arranged between the flue gas cavity and the shell to realize heat insulation and cooling of the surface of the gas water heater, external cold air can be introduced into the heat insulation cavity, no leakage or corrosion risk exists, the air can flow into the flue gas cavity after flowing into the heat insulation cavity for cooling and heat exchange, and then flows close to the wall surface of the heat insulation cavity, so that the heat insulation effect is ensured, and the service life of the whole system is prolonged.

Description

Gas water heater

Technical Field

The invention relates to a gas water heater.

Background

The water heaters on the market are roughly divided into electric water heaters and gas water heaters, and for the gas water heaters, the gas water heaters are selected by multiple users because of the advantages of being ready to use and free from waiting. The working principle of the gas water heater is that gas is used as a main energy material, and high-temperature heat generated by gas combustion is transferred to cold water flowing through a heat exchanger inside the water heater, so that the purpose of preparing hot water is achieved.

Because the gas needs to burn in the inside water heater, then comes to carry out the heat transfer with cold water through the high temperature flue gas that the burning produced, so its inside flue gas chamber temperature that is used for guiding the flue gas is higher, in order to avoid high temperature heat to lead to damaging the wall on the shell of combustor, or scald user's danger, is provided with the coil pipe at the outer wall of water heater usually, is used for reducing the surface temperature of water heater. However, the cooling method using the coil pipe is affected by factors such as water quality and condensed water, and the possibility of corrosion, water leakage and other problems is very high after long-term use, and the water heater cannot be normally used directly under severe conditions. And the coil pipe arrangement mode improves the manufacturing cost of the water heater and also improves the complexity of design and installation.

Disclosure of Invention

The invention provides a gas water heater, aiming at overcoming the defects that the hidden trouble of water leakage and corrosion can be caused when the surface of the water heater is cooled by using a water-cooling coil pipe mode in the prior art and the setting cost is higher.

The invention solves the technical problems through the following technical scheme:

the utility model provides a gas water heater, its includes the casing, the inside of casing forms the flue gas chamber, its characterized in that, still be provided with thermal-insulated chamber on the partial inside wall of casing, thermal-insulated chamber is located the flue gas chamber with between the inside wall of casing, be provided with first intercommunication mouth and second intercommunication mouth on the thermal-insulated chamber, first intercommunication mouth intercommunication thermal-insulated chamber with the external world, second intercommunication mouth intercommunication thermal-insulated chamber with the flue gas chamber.

In this scheme, this gas heater sets up a thermal-insulated chamber through having between the lateral wall of the flue gas chamber of flue gas and casing in the casing, realize the thermal-insulated cooling to gas heater surface, and simultaneously, this thermal-insulated chamber intercommunication is external, can introduce external cold air and get into thermal-insulated intracavity, compare in the mode that uses the water-cooling coil to cool down, it is more convenient to set up the thermal-insulated chamber as coolant with the air, and there is not the risk of revealing and corroding, it is also more convenient to set up, the air can flow into the inside of flue gas chamber after the heat transfer of cooling in the thermal-insulated intracavity of influx, further utilize as supplementary air, and, the air that flows into the flue gas intracavity receives high temperature to influence, the wall that will hug closely thermal-insulated chamber flows, thermal-insulated effect has been guaranteed, the holistic life of system is.

Preferably, the gas water heater further comprises a combustion chamber assembly, the combustion chamber assembly is arranged in the shell, and the combustion chamber assembly is located below the smoke chamber and communicated with the smoke chamber; the surface of the housing has an air inlet port communicating the interior of the housing with the outside, the air inlet port being located below the combustion chamber assembly, the first communication port being communicated to the air inlet port. This gas heater will introduce in some direct drainage of its inside air to the combustion chamber subassembly for the oxygen suppliment makes it carry out normal combustion, and first intercommunication mouth also communicates to air entrance, so the air can shunt in water heater inside, and another part air can introduce thermal-insulated intracavity, realizes thermal-insulated and the heat transfer operation to thermal-insulated chamber, implements and convenient operation, has reduced the outside opening of water heater.

Preferably, a plurality of partition plates are arranged inside the shell, the partition plates are fixedly connected to the inner side wall of the shell, and the space between the partition plates and the inner side wall of the shell forms the heat insulation cavity. The baffle is used for forming and the casing between the cavity, and then forms thermal-insulated chamber, and this kind of structure sets up simple and conveniently, easily installation and manufacturing.

Preferably, a supporting plate is arranged on the inner side wall of the shell, the supporting plate extends towards the inside of the shell, and the side edge of the partition plate is fixed on the surface of the supporting plate. The partition board and the side wall of the shell are fixed with each other through the supporting plate.

Preferably, the supporting plate is disposed below the partition plate, and the first communication port is located on a surface of the supporting plate. The support plate is fixed below the partition plate, so that a bottom end face of the heat insulation cavity is formed, and the air inlet is also positioned below the gas water heater, so that the first communication port is arranged on the surface of the support plate and corresponds to the direction of the air inlet, and air can flow into the heat insulation cavity more smoothly.

Preferably, the first communication ports are a plurality of air inlet through holes uniformly arranged on the surface of the supporting plate. First opening sets up to distribute a plurality of inlet vent on the backup pad surface, and the air current velocity of flow when can increase the air admission thermal-insulated chamber takes away the heat of baffle and casing wall fast, reaches better cooling effect.

Preferably, the partition board is arranged around the flue gas outlet side of the combustion chamber assembly of the gas water heater to form the flue gas cavity. Enclose through the baffle and establish formation gas cavity, the both sides that also make the baffle promptly form gas cavity and thermal-insulated chamber respectively, and the air current of thermal-insulated intracavity reduces the temperature of baffle and casing wall simultaneously, also receives the influence of inboard high temperature flue gas simultaneously, makes the air of gas cavity can paste the baffle and flow, further plays the effect of protection baffle.

Preferably, the surface of the partition board is provided with a first avoidance port, the surface of the shell is provided with an ignition needle and a sensing needle, and the ignition end of the ignition needle and the sensing end of the sensing needle penetrate through the first avoidance port and are located in the smoke cavity. The setting of first dodging the mouth makes things convenient for ignition needle and response needle to sense the condition in the flue gas chamber to in time carry out combustion state and adjust.

Preferably, the surface of the partition board is provided with a second avoidance port, the surface of the housing is provided with a viewing port, and the viewing port and the second avoidance port overlap in projection along at least a part of the direction of the outer side of the housing toward the inner side. The setting up convenience of customers or the maintainer of viewing aperture can observe the inside flame combustion state of water heater, learns whether water heater normally works.

Preferably, the second communication port is located at a lower end surface of the heat insulating chamber. The second intercommunication mouth makes inside the air leads to the flue gas chamber, is close to simultaneously and insulates against heat the lower extreme setting in chamber, can make the distance that the laminating flows between air and the thermal-insulated chamber as far as possible to improve thermal-insulated and heat transfer effect as far as possible.

Preferably, the gas water heater further comprises a heat exchanger, the heat exchanger is arranged in the shell and communicated with the smoke air cavity, and a heat insulation layer is filled between the heat exchanger and the inner side wall of the shell. The heat insulation layer is filled between the heat exchanger and the shell, so that the shell can be prevented from being influenced by high temperature to cause the service life reduction or damage, and meanwhile, the heat exchange efficiency inside the heat exchanger can also be improved.

On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.

The positive progress effects of the invention are as follows:

the gas water heater provided by the invention realizes heat insulation and temperature reduction on the surface of the gas water heater by arranging the heat insulation cavity between the flue gas cavity circulating flue gas in the shell and the side wall of the shell, meanwhile, the heat insulation cavity is communicated with the outside, and cold air from the outside can be introduced into the heat insulation cavity.

Drawings

Fig. 1 is an exploded view of a gas water heater according to a preferred embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a gas water heater according to a preferred embodiment of the present invention along the vertical direction.

Fig. 3 is a partial schematic view of portion a of fig. 2.

Description of reference numerals:

housing 1

Air inlet 11

Ignition needle 12

Induction needle 13

Viewing port 14

Flue gas chamber 2

Heat insulation cavity 3

First communication port 41

Second communication port 42

Combustor assembly 5

Partition 6

First avoidance port 61

Second avoidance port 62

Supporting plate 7

Heat exchanger 8

Thermal insulation layer 9

Air 10

Flue gas 20

Detailed Description

The present invention will be more clearly and completely described below by way of a preferred embodiment in conjunction with the accompanying drawings, without thereby limiting the scope of the invention to the described embodiment.

As shown in fig. 1 to 3, the present embodiment provides a gas water heater, which includes a housing 1, a combustion chamber assembly 5 and a heat exchanger 8, wherein the combustion chamber assembly 5 and the heat exchanger 8 are both disposed inside the housing 1, a flue gas chamber 2 is further formed inside the housing 1, the combustion chamber assembly 5 and the heat exchanger 8 are distributed in the housing 1 vertically, the combustion chamber assembly 5 is located below the heat exchanger 8, the flue gas chamber 2 is located between the combustion chamber assembly 5 and the heat exchanger 8, and the combustion chamber assembly 5, the flue gas chamber 2 and the heat exchanger 8 are sequentially communicated in the vertical direction. Further, the surface of the housing 1 is also provided with an air inlet 11 for communicating the inside of the housing 1 with the outside, in this embodiment, the air inlet 11 is located below the combustion chamber assembly 5, the outside air 10 enters the internal gap of the combustion chamber assembly 5 through the air inlet 11 to provide sufficient secondary air 10 for the gas combustion on the combustion chamber assembly 5, and the high-temperature flue gas 20 generated at the combustion chamber assembly 5 flows into the heat exchanger 8 through the flue gas cavity 2 to exchange heat with the cold water in the heat exchanger 8.

In this embodiment, a heat insulation cavity 3 is further disposed on a part of the inner side wall of the housing 1, the heat insulation cavity 3 is located between the smoke cavity 2 and the inner side wall of the housing 1, a first communication port 41 and a second communication port 42 are disposed on the heat insulation cavity 3, the first communication port 41 communicates the heat insulation cavity 3 with the outside, and the second communication port 42 communicates the heat insulation cavity 3 with the smoke cavity 2.

The gas water heater realizes heat insulation and temperature reduction on the surface of the gas water heater by arranging the heat insulation cavity 3 between the flue gas cavity 2 which circulates flue gas 20 in the shell 1 and the side wall of the shell 1. Simultaneously, this thermal-insulated chamber 3 communicates the external world, can introduce in external cold air 10 gets into thermal-insulated chamber 3, compare in the mode that conventional use water-cooling coil cooled, it is more convenient to use air 10 as the thermal-insulated chamber 3 of coolant, there is not the risk of leakage and corruption, and, air 10 can flow into the inside of flue gas chamber 2 again after the heat transfer of cooling in flowing into thermal-insulated chamber 3, further utilize as supplementary air 10, and, air 10 that flows into in flue gas chamber 2 receives the high temperature influence, the wall that will hug closely thermal-insulated chamber 3 flows, thermal-insulated effect has been guaranteed, the holistic life of system has been improved.

Moreover, in the embodiment, the combustor assembly 5 and the heat exchanger 8 are designed integrally, so that the manufacturing process is simpler, the installation is more convenient and the cost is lower.

Preferably, in this embodiment, except for a part having a special requirement, most of the materials of the whole gas water heater are stainless steel materials, so as to achieve a better heat conduction effect. Casing 1 encloses to establish for front and back apron and both sides apron and forms, makes inside formation integral type space, accomplishes burning and heat transfer in this space, can avoid heat exchanger 8 and 5 split type connected can appear sealed bad, the flue gas 20 spills over the scheduling problem, can also improve heat exchange efficiency simultaneously.

In the present embodiment, the first communication port 41 communicates to the air inlet 11. The first communicating opening 41 is used as an air inlet of the heat insulation cavity 3, one part of air 10 introduced into the gas water heater is directly guided into the combustion chamber assembly 5 and used for supplying oxygen to enable the gas water heater to normally burn, and the other part of air 10 can be introduced into the heat insulation cavity 3 to realize heat insulation and heat exchange operations of the heat insulation cavity 3, namely, the air 10 is divided after entering the inside of the water heater, so that the external opening of the water heater is reduced, and the setting and the function implementation of the heat insulation cavity 3 are more convenient.

Further, the inside of casing 1 sets up a plurality of baffles 6, baffle 6 fixed connection in the inside wall of casing 1, and this gas heater passes through the space formation heat-insulating chamber 3 between the inside wall of baffle 6 and casing 1, and baffle 6 encloses to establish in the flue gas outlet side of combustion chamber subassembly 5, the top of combustion chamber subassembly 5 promptly and forms flue gas chamber 2. The cavity between the partition board 6 and the shell 1 forms the heat insulation cavity 3, the arrangement is simple and convenient, and the installation and the manufacture are easy. Of course, in other embodiments, other ways of forming the insulating chamber 3 may be selected, such as a hollow box detachably mounted inside the housing 1. Enclose through baffle 6 and establish formation flue gas chamber 2, also make the both sides of baffle 6 form flue gas chamber 2 and thermal-insulated chamber 3 respectively promptly, the air current of the air 10 in the thermal-insulated chamber 3 reduces the temperature of

baffle

6 and 1 wall of casing simultaneously, also receives the influence of inboard high temperature flue gas 20 simultaneously, makes the air 10 in the flue gas chamber 2 can paste baffle 6 and flow, further plays the effect of protection baffle 6. In the present embodiment, the partition plate 6 is disposed inside the front and rear cover plates of the casing 1, that is, the heat insulating chamber 3 may be formed between the partition plate 6 and the front and rear cover plates, and the heat insulating requirement of the region near the inside of the both side cover plates is low, so the heat insulating chamber 3 is not provided in the present embodiment. Certainly, in other embodiments, the heat insulation cavity 3 can be arranged around the front cover plate, the rear cover plate and the two side cover plates, so that the comprehensive protection and heat insulation effects are achieved.

Preferably, a supporting plate 7 is arranged on the inner side wall of the shell 1, the supporting plate 7 extends towards the inside of the shell 1, and the side edges of the partition boards 6 are fixed on the surface of the supporting plate 7, namely, the partition boards 6 and the side wall of the shell 1 are mutually fixed through the supporting plate 7. Further, since the support plate 7 is disposed below the partition plate 6 and the first communication port 41 is located on the surface of the support plate 7, that is, the bottom end surface of the heat insulating chamber 3 is formed by the support plate 7 and the air inlet 11 is also located below the gas water heater, the first communication port 41 is disposed on the surface of the support plate 7 so as to correspond to the direction of the air inlet 11, thereby making it possible to make the air 10 flow into the heat insulating chamber 3 more smoothly. Preferably, in the present embodiment, the first communication holes 41 are a plurality of air inlet through holes uniformly arranged on the surface of the support plate 7. First opening 41 sets up to distribute at a plurality of inlet opening on backup pad 7 surface, and the air current velocity of flow when can increase air 10 and get into thermal-insulated chamber 3 takes away the heat of baffle 6 and casing wall fast, reaches better cooling effect. Of course, in other embodiments, the first communication port 41 may be disposed at other positions, such as opening directly on the sidewall of the housing 1, introducing the air 10 into the heat insulation chamber 3 to achieve cooling and heat exchange, and the like.

Further, the second communication port 42 serves as an air outlet of the heat insulation chamber 3, and the second communication port 42 is located on the lower end surface of the heat insulation chamber, in this embodiment, the second communication port 42 is located on the lower end surface of the partition plate 6, so that the distance between the air 10 and the partition plate 6 in the joint flow can be as long as possible, and the heat insulation and heat exchange effects can be improved as much as possible.

In addition, the surface of the partition plate 6 inside the gas water heater is also provided with a first avoidance port 61, the surface of the shell 1 is provided with an ignition needle 12 and a sensing needle 13, and the ignition end of the ignition needle 12 and the sensing end of the sensing needle 13 penetrate through the first avoidance port 61 and are positioned in the smoke gas cavity 2. The provision of the first avoidance port 61 facilitates the ignition needle 12 and the sensing needle 13 to sense the conditions in the flue gas chamber 2 so as to perform the combustion state adjustment in time.

Preferably, the surface of the partition 6 is further provided with a second avoidance port 62, the surface of the housing 1 has a viewing port 14, and at least a part of projections of the viewing port 14 and the second avoidance port 62 in a direction from the outer side toward the inner side of the housing 1 overlap. The setting of viewing aperture 14 facilitates the user or maintainer and can observe the inside flame combustion state of water heater, knows whether water heater normally works.

Of course, in other embodiments, an avoidance port may not be formed in the surface of the partition board 6, and other situations that may affect the installation position of the partition board 6 may be avoided by forming the partition board 6 in a partitioned manner, so that mutual independence and no influence on the structure are ensured.

In addition, in the present embodiment, a heat insulating layer 9 is further filled between the heat exchanger 8 and the inner side wall of the casing 1. The heat insulation layer 9 is filled between the heat exchanger 8 and the shell 1, so that the shell 1 can be prevented from being influenced by high temperature to cause service life reduction or damage, and meanwhile, the heat exchange efficiency inside the heat exchanger 8 can also be improved. Preferably, the present embodiment uses a heat insulation cotton material, and in other embodiments, a heat insulation layer 9 made of other materials may be used to perform a heat insulation function.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. The utility model provides a gas water heater, its includes the casing, the inside of casing forms the flue gas chamber, its characterized in that, still be provided with thermal-insulated chamber on the partial inside wall of casing, thermal-insulated chamber is located the flue gas chamber with between the inside wall of casing, be provided with first intercommunication mouth and second intercommunication mouth on the thermal-insulated chamber, first intercommunication mouth intercommunication thermal-insulated chamber with the external world, second intercommunication mouth intercommunication thermal-insulated chamber with the flue gas chamber.

2. The gas water heater of claim 1, further comprising a combustion chamber assembly disposed within the housing, the combustion chamber assembly being located below and in communication with the flue gas chamber; the surface of the housing has an air inlet port communicating the interior of the housing with the outside, the air inlet port being located below the combustion chamber assembly, the first communication port being communicated to the air inlet port.

3. The gas water heater of claim 1, wherein the interior of the housing is provided with a plurality of partitions fixedly attached to the interior side walls of the housing, the space between the partitions and the interior side walls of the housing forming the insulating chamber.

4. A gas water heater as claimed in claim 3, wherein a support plate is provided on the inner side wall of the housing, the support plate extending toward the inside of the housing, and the side of the partition plate is fixed to the surface of the support plate.

5. The gas water heater of claim 4, wherein said support plate is disposed below said partition plate, and said first communication port is located on a surface of said support plate.

6. The gas water heater of claim 4, wherein the first communication port is a plurality of air inlet through holes uniformly formed on the surface of the support plate.

7. The gas water heater of claim 3, wherein said baffle surrounds said flue gas chamber on a flue gas outlet side of a combustion chamber assembly of said gas water heater.

8. The gas water heater of claim 3, wherein a first avoidance port is provided on a surface of the partition, an ignition needle and a sensing needle are provided on a surface of the housing, and an ignition end of the ignition needle and a sensing end of the sensing needle pass through the first avoidance port and are located in the flue gas chamber.

9. The gas water heater of claim 3, wherein a surface of the baffle is provided with a second avoidance port, and a surface of the housing has a viewing port, the viewing port and the second avoidance port overlapping in at least a portion of a projection in a direction from an outside of the housing toward an inside.

10. The gas water heater of claim 1, wherein said second communication port is located at a lower end surface of said insulating chamber.

11. The gas water heater of claim 1, further comprising a heat exchanger disposed in the housing and in communication with the flue gas chamber, wherein a thermal insulation layer is filled between the heat exchanger and an inner side wall of the housing.