CN217541081U - Energy-saving gas water heater - Google Patents

Abstract

The application provides an energy-saving gas-fired water heater, including a furnace body, the furnace body includes an inner tank, a thermal insulation layer and an outer shell sequentially arranged from the inside to the outside, the inner tank is provided with a three-return heat exchanger, and the A complete premixed burner is arranged on the top of the furnace body, one end of the three-return heat exchanger is connected through the non-combustion port of the complete premixed burner, and the other end of the three-return heat exchanger is connected to the flue gas outlet. By using a three-return heat exchanger, it can provide the largest heat transfer surface area, fully absorb the latent heat of condensation in the flue gas, and have high thermal efficiency. Combined with a fully premixed burner with high combustion efficiency, it can achieve the effect of saving energy.

Description

An energy-saving gas water heater

technical field

The utility model relates to a gas-fired water heater technology, in particular to an energy-saving gas-fired water heater.

Background technique

The efficiency of gas water heaters is mainly reflected in the combustion efficiency and heat exchange efficiency. The heat exchangers of existing gas-fired water heaters are in the form of straight-tube, spiral, etc., but the overall efficiency of the existing gas-fired water heaters is difficult to meet commercial needs.

Utility model content

The purpose of the utility model is to provide a more efficient energy-saving gas water heater, which improves heat exchange efficiency and combustion efficiency through the cooperation of a three-return heat exchanger and a complete premix burner.

A brief summary of one or more aspects is given below to provide a basic understanding of the aspects. This summary is not an exhaustive overview of all contemplated aspects and is neither intended to identify key or critical elements of all aspects nor attempt to delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

According to one aspect of the present invention, an energy-saving gas-fired water heater is provided, which includes a furnace body, wherein the furnace body includes an inner tank, a thermal insulation layer and an outer shell sequentially arranged from the inside to the outside, and three return strokes are arranged inside the inner tank. A heat exchanger, a complete premixed burner is arranged on the top of the furnace body, one end of the three-return heat exchanger is connected to the gas inlet through the complete premixed burner, and the other end of the three-return heat exchanger is connected to the gas inlet. Flue gas outlet connection.

In one embodiment, the three-return heat exchanger includes: a first return passage, disposed in the middle of the inner tank; a first return smoke collecting chamber, connected to the bottom of the first return passage; and a second return passage , which is parallel to the first return passage and communicated with the first return smoke collecting chamber; the second return smoke collecting chamber is connected to the top of the second return passage; the third return passage is parallel to the first return passage A return passage is communicated with the second return smoke collecting chamber; and a third return smoke collecting chamber is connected to the bottom of the third return passage.

In one embodiment, the third return smoke collecting chamber communicates with the smoke outlet.

In one embodiment, the head of the fully premixed combustor is disposed within the first return passage.

In one embodiment, the material of the three-return heat exchanger is stainless steel.

In one embodiment, the inner tank is a stainless steel inner tank, and the thermal insulation layer is a fluorine-free polyurethane foam thermal insulation layer.

In one embodiment, the side wall of the furnace body is provided with a water inlet and a water outlet.

In one embodiment, the lower part of the side wall of the furnace body is provided with a cleaning hole and a blowdown valve.

In one embodiment, a safety valve is further provided on the side wall of the furnace body.

The beneficial effects of the embodiments of the present invention are: by using a three-return heat exchanger, the maximum heat transfer surface area can be provided, the latent heat of condensation in the flue gas can be fully absorbed, the thermal efficiency is high, and a complete premixed burner with high combustion efficiency can be used. Can achieve the effect of saving energy.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings required in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can also be obtained from these drawings without creative effort.

The above-described features and advantages of the present invention can be better understood after reading the detailed description of the embodiments of the present disclosure in conjunction with the following drawings. In the drawings, components are not necessarily drawn to scale and components with similar related characteristics or features may have the same or similar reference numbers.

Fig. 1 is the three-dimensional structure schematic diagram of the embodiment of the present application;

2 is a schematic diagram of the first return of the three-return heat exchanger according to an embodiment of the present application;

3 is a schematic diagram of the second return of the three-return heat exchanger according to an embodiment of the present application;

4 is a schematic diagram of the third return of the three-return heat exchanger according to the embodiment of the present application;

Among them: 1-furnace body; 11-inner tank; 12-insulation layer; 13-outer shell; 2-three-return heat exchanger; 3-complete premixed burner; 31-first return passage; 32-first return set Smoke chamber; 33-Second return passage; 34-Second return smoke collection chamber; 35-Third return passage; 36-Third return smoke collection chamber; 4-Gas inlet; 5-Smoke outlet; 6-Water inlet ; 7- water outlet; 8- cleaning hole; 9- drain valve; 10- safety valve.

Detailed ways

The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. Note that the aspects described below in conjunction with the accompanying drawings and specific embodiments are only exemplary, and should not be construed as any limitation to the protection scope of the present invention.

As shown in FIG. 1 , the embodiment of the present application provides an energy-saving gas-fired water heater, including a furnace body 1 , and the furnace body 1 includes an inner tank 11 , a thermal insulation layer 12 and an outer shell 13 arranged in sequence from the inside to the outside. 11 A three-return heat exchanger 2 is arranged inside, a complete premixed burner 3 is arranged on the top of the furnace body 1, one end of the three-return heat exchanger 2 is connected to the gas inlet 4 through the complete premixed burner 3, and the three-return heat exchanger 2 The other end is connected to the flue gas outlet 5.

As shown in FIGS. 2 to 4 , the three-return heat exchanger 2 includes a first return passage 31 disposed in the middle of the inner tank 11 , a second return passage 33 parallel to the first return passage 31 , and a second return passage parallel to the first return passage 31 of the third return channel 35. The first return passage 31 and the second return passage 33 are connected through the first return smoke collecting chamber 32 at the bottom of the first return passage 31 , and the second return passage 33 and the third return passage 35 pass through the first return smoke collecting chamber 32 at the top of the second return passage 34 . The second return smoke collecting chamber 34 is connected. The bottom of the third return passage 35 is connected to the third return smoke collecting chamber 36 . The third return fume collecting chamber 36 communicates with the fume outlet 5 . The flow direction of the flue gas is shown by the arrows in FIGS. 2 to 4 , and is finally discharged through the flue gas outlet 5 .

It should be noted that FIGS. 2 to 4 are schematic cross-sectional views. As shown in FIG. 1 , the first return passage 31 , the second return passage 33 and the third return passage 35 are multiple parallel pipes, wherein the first return passage The channel 31 is arranged in the middle of the inner container 11 , the second return channel 33 surrounds the first return channel 31 , and the third return channel 35 is arranged between the second return channel 33 and the first return channel 31 .

In this embodiment, the head of the fully premixed burner 3 is arranged in the first return passage 31 , combustion also occurs in the first return passage 31 , and air and gas are mixed in the complete premixed burner 3 .

In terms of materials, the material of the three-return heat exchanger 2 is 444 stainless steel, and the inner tank 11 can also be made of 444 stainless steel inner tank, which can provide food-grade water protection. The insulation layer is thickened fluorine-free polyurethane foam insulation layer, which can reduce heat loss.

It is easy to understand that a water inlet 6 and a water outlet 7 are provided on the side wall of the furnace body 1 , and multiple groups of the water inlet 6 and the water outlet 7 can be arranged, and the position and height can be designed as required. In order to facilitate cleaning and blowdown, the side wall of the furnace body 1 is also provided with a cleaning hole 8 and a blowdown valve 9 . In addition, the furnace body 1 is also provided with a safety valve 10, which can ensure safe operation in conjunction with a thermostat.

To sum up, the energy-saving gas-fired water heater provided by the embodiment of the present application can provide the largest heat transfer surface area by using the three-return heat exchanger, fully absorb the latent heat of condensation in the flue gas, and has high thermal efficiency, combined with high combustion efficiency The fully premixed burner can achieve the effect of saving energy.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

The previous description of the present disclosure is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of the present disclosure. Thus, the present disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The above descriptions are only preferred examples of this application, and are not intended to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included in the protection of this application. within the range.

Claims (9)

1. An energy-saving gas water heater is characterized in that: the furnace body comprises a furnace body, the furnace body includes inner bag, heat preservation and the shell that sets gradually by inside to outside, the inside three return heat exchangers that set up of inner bag, the furnace body top is provided with the complete burner that mixes in advance, three return heat exchangers's one end is passed through the complete burner that mixes in advance and gas access connection, three return heat exchangers's the other end and exhanst gas outlet connection.

2. The energy saving gas fired water heater of claim 1, wherein the three pass heat exchanger comprises:

the first loop Cheng Tongdao is arranged in the middle of the inner container;

the first return smoke collecting chamber is connected to the bottom of the first return channel;

a second return passage parallel to the first return passage and communicating with the first return smoke collecting chamber;

the second return smoke collecting chamber is connected to the top of the second return channel;

a third return passage parallel to the first return passage and communicating with the second return smoke-collecting chamber;

and a third return smoke collecting chamber connected to the bottom of the third return channel.

3. The energy-saving gas-fired water heater according to claim 2, wherein the third return smoke collecting chamber is communicated with the smoke outlet.

4. The energy-saving gas-fired water heater according to claim 3, wherein: a head of the fully premixed combustor is disposed within the first return passage.

5. The energy-saving gas-fired water heater according to claim 1, wherein: the material of the three-pass heat exchanger is stainless steel.

6. The energy-saving gas-fired water heater according to claim 1, wherein: the inner container is a stainless steel inner container, and the heat-insulating layer is a fluorine-free polyurethane foaming heat-insulating layer.

7. The energy-saving gas-fired water heater according to claim 1, wherein: and a water inlet and a water outlet are formed in the side wall of the furnace body.

8. The energy-saving gas-fired water heater according to claim 1, wherein: and a cleaning hole and a drain valve are arranged at the lower part of the side wall of the furnace body.

9. The energy-saving gas-fired water heater according to claim 1, wherein: and a safety valve is also arranged on the side wall of the furnace body.

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