Combustor structure of gas water heater and gas water heater

A technology for gas water heaters and combustion chambers, applied in the direction of combustion chambers, combustion methods, combustion equipment, etc., which can solve the problems of large volume and large space occupation of gas water heaters, and achieve the effects of reducing surface temperature and improving thermal efficiency

Inactive Publication Date: 2015-03-25
WUHU MIDEA KITCHEN & BATH APPLIANCES MFG
7 Cites 2 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0003] The surface temperature of the adiabatic combustion chamber of existing gas water heaters is generally around 200°C. If it is necessary to further reduce the surface temperature o...
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Method used

The present embodiment utilizes the draft of strong exhaust fan 4 to form convection between the combustion chamber 2 inner surface and the heat shield through the above-mentioned scheme, and the heat emitted...
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Abstract

The invention discloses a combustor structure of a gas water heater and the gas water heater. The combustor structure comprises an outer combustor frame and an insulating frame installed inside the outer combustor frame. A gap is formed between the outer side surface of the insulating frame and the inner side surface of the outer combustor frame. The gap is formed between the outer side surface of the insulating frame and the inner side surface of the outer combustor frame, convection can be formed between the inner surface of a combustor and a thermal baffle through ventilation of a strong exhaust blower, heat dissipated by the thermal baffle is brought away to heat a heat exchanger, and therefore the temperature of the surface of the combustor is reduced, and the thermal efficiency of the gas water heater is improved.

Application Domain

Fluid heatersCasings/linings

Technology Topic

Combustion chamberEngineering +7

Image

  • Combustor structure of gas water heater and gas water heater
  • Combustor structure of gas water heater and gas water heater
  • Combustor structure of gas water heater and gas water heater

Examples

  • Experimental program(1)

Example Embodiment

[0023] It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0024] Such as figure 1 As shown, the gas water heater involved in the embodiment of the present invention includes a combustor 1, a combustion chamber 2, a heat exchanger 3, and a fan 4 arranged from bottom to top. Among them, the heat generated by the combustor 1 is transferred from the combustion chamber 2 to the heat exchange The fan 4 is connected to the cavity in the combustion chamber 2. Under the action of the exhaust fan 4, the heat in the combustion chamber 2 can be pumped to the heat exchanger 3 to heat the cold water in the heat exchanger 3 to realize a water heater The function of producing hot water.
[0025] In order to reduce the surface temperature of the combustion chamber 2 of the gas water heater, this embodiment adopts the following combustion chamber 2 structure.
[0026] Such as Figure 2-Figure 5 As shown, a preferred embodiment of the present invention proposes a combustion chamber 2 structure of a gas water heater, including: a combustion outdoor frame 21 and a heat insulation frame 22 installed in the combustion outdoor frame 21. The outer surface of the heat insulation frame 22 and There is a gap 23 between the inner surfaces of the combustion chamber 21, and the heat insulation frame 22 includes heat insulation side plates 221 formed along the periphery of the combustion chamber 21. When the water heater is working, the heat generated in the combustion chamber 2 A part is transmitted through the heat insulation side plate 221 to the gap 23 between the heat insulation side plate 221 and the inner surface of the combustion chamber frame 21.
[0027] In this embodiment, the gap 23 between the thermal insulation side plate 221 and the inner surface of the combustion chamber 21 extends along the vertical direction of the combustion chamber 2, and the lower end of the gap 23 and the combustion chamber 21 The external space is connected. The gap 23 not only communicates with the outside air, but also communicates with the suction port of the fan 4. Under the suction effect of the fan 4, convection is formed between the inner surface of the combustion chamber 21 and the inner surface of the thermal insulation frame 22. The heat in the gap 23 is drawn to the heat exchanger 3, that is, the fan 4 can simultaneously draw the heat in the combustion chamber 2 and the heat in the gap 23 to the heat exchanger 3, thereby not only reducing The surface temperature of the combustion chamber 2 can also improve the thermal efficiency of the gas water heater.
[0028] Specifically, the heat-insulating frame 22 includes four heat-insulating side plates 221 formed along the periphery of the combustion outer frame 21, and a slot for installing the heat-insulating side plates 221 is provided at the lower edge of the combustion outer frame 21.
[0029] The card slots can be located at the lower edge of the combustion chamber 21 and evenly distributed along the circumference of the combustion chamber 21. For example, one or more card slots can be provided at the lower edge of each side wall of the combustion chamber 21. Among them, the length of the card slot may not be limited.
[0030] As an embodiment, the card slot consists of a side wall corresponding to the combustion chamber 21, a first side plate 212 disposed opposite to the side wall, and a connection connecting the side wall and the first side plate 212 Bottom structure.
[0031] After the heat-insulating side plate 221 is installed in the corresponding slot, the first side plate 212 can be bent toward one side of the heat-insulating side plate 221 by external force, thereby compressing the heat-insulating side plate 221. Side panel 221.
[0032] Furthermore, it is also possible to provide a second side plate opposite to the first side plate 212 in the slot, between the side wall of the combustion chamber 21 and the first side plate 212, on the heat insulation side After the board 221 is installed in the corresponding slot, the second side board can be bent to the other side of the heat-insulating side board 221 by external force, and the second side board is further pressed against the heat-insulating side board 221.
[0033] Further, in order to securely install each heat-insulating side plate 221 in the above-mentioned clamping groove, as an embodiment, a protrusion that abuts the heat-insulating side plate 221 may be provided on the inner surface of the combustion chamber 21. From 213. In this way, on the one hand, through the clamping effect of the card slot, on the other hand, the heat-insulating side plate 221 can be fixedly installed on the protrusion 213 of the outer frame of the burner 1 and the first side of the card slot through the tight effect of the protrusion 213. Between the boards 212.
[0034] Preferably, the above-mentioned protrusions 213 may be evenly distributed on the inner surface of the outer combustion chamber frame 21, and the specific distribution rule may be, for example, a plurality of protrusions 213 are respectively provided on the upper and lower inner surfaces of the outer combustion chamber frame 21.
[0035] In addition, in this embodiment, the shape of the protrusion 213 is not specifically limited, and can be of various shapes, as long as it can achieve the function of pressing the heat-insulating side plate 221.
[0036] In this embodiment, the bottom of the combustion chamber 21 is provided with a connecting piece 211 for connecting the burner 1 to fix the burner 1 and the combustion chamber 21. The gap 23 is located outside the connecting piece 211.
[0037] When the gas water heater is working, the burner 1 burns in the insulating frame 22 enclosed by the insulating side plate 221, and the high-temperature flue gas (the temperature of the high-temperature flue gas can reach about 1000°C) heats the cold water in the heat exchanger 3. Part of the heat escapes through the insulating side plate 221 (the surface temperature of the insulating side plate 221 can reach about 200°C). At this time, since the fan 4 is also working, the fan 4 generates suction, and air enters from the outside. Since there is a gap 23 between the inner surface of the combustion chamber 2 and the heat-insulating side plate 221, convection is formed and will be emitted through the heat-insulating plate The heat is taken away and used to heat the heat exchanger 3, which not only reduces the surface temperature of the combustion chamber 2 (the surface temperature of the combustion chamber 2 can be reduced to below 100°C), but also improves the thermal efficiency of the gas water heater.
[0038] In this embodiment, through the above-mentioned scheme, the forced exhaust fan 4 is used to form convection between the inner surface of the combustion chamber 2 and the heat insulation plate, and the heat emitted through the heat insulation plate is taken away to heat the heat exchanger 3. This not only reduces the surface temperature of the combustion chamber 2 but also improves the thermal efficiency of the gas water heater.
[0039] The foregoing are only preferred embodiments of the present invention, and do not limit the scope of the present invention. Any equivalent structure or process transformation made by using the content of the description and drawings of the present invention, or directly or indirectly applied to other related technical fields, are all The same reason is included in the scope of patent protection of the present invention.

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