Small coil-free gas water heater

Abstract

The utility model relates to a small-sized coil-pipe-free gas water heater which comprises a combustion chamber, a heat exchanger, a fan smoke seat and an exhaust fan which are sequentially arranged at the upper end of the combustion chamber, a combustor is arranged in the combustion chamber, the heat exchanger is a heat exchange device without a box shell winding pipe, and the small-sized coil-pipe-free gas water heater further comprises a mute shell covering the combustion chamber, the heat exchanger and the fan smoke seat. The integral stability of a combustion area of the gas water heater can be improved, noise generated in the combustion and exhaust process can be effectively isolated, a certain heat insulation function is achieved, and the use comfort of a user is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas water heaters, in particular to the technical field of small-sized gas water heaters without coil pipes. BACKGROUND

[0002] As a common household water heating device, gas water heaters are widely used due to their characteristics of rapid heating and instant hot water supply. Although there are various products and relatively mature technologies in the current household gas water heater market, there is still a demand for further improvement as the demand for personalization develops.

[0003] For example, traditional gas water heaters are often large in size, which limits their application in space-limited environments. Because the high-standard installation requirements of gas water heaters also need sufficient ventilation space to ensure safe operation and exhaust gas emission, the installation flexibility is further limited.

[0004] To this end, increasing the air volume to improve the combustion volume and exhaust air, and excessive air volume may cause unstable flame of the burner and increase the noise generated by the fan and the combustion process. SUMMARY

[0005] To solve the above problems, the present application proposes a small-sized gas water heater without coil pipes, which aims to optimize the design of the water heater combustion system to at least solve at least one of the above problems and provide a small-sized water heater that is quiet and flexible to install.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] A small-sized gas water heater without coil pipes, comprising a combustion chamber, a heat exchanger, a fan smoke stand and an air extractor arranged in sequence at the upper end of the combustion chamber, wherein the combustion chamber is provided with a burner, and the heat exchanger is a heat exchange device without a box shell and a coil pipe.

[0008] It also includes a silent shell covering the combustion chamber, heat exchanger and fan smoke stand.

[0009] In this way, the design of the silent shell covering the combustion chamber, heat exchanger and fan smoke stand can improve the overall stability of the combustion area of the gas water heater, effectively isolate the noise generated during combustion and exhaust, and also have certain heat insulation function, improving the user's comfort. At the same time, in terms of safety, the design of the heat exchanger without a box shell and a coil pipe greatly reduces the risk of water leakage that may be caused by the traditional coil pipe structure.

[0010] In some possible embodiments, the mute shell is provided with a boss protruding towards the inner cavity of the gas water heater and interfacing with the heat exchanger. The boss forms a partition gap between the heat exchanger and the mute shell, further improving the heat insulation performance and mute effect.

[0011] In some possible embodiments, the mute shell is provided with a heat dissipation hole corresponding to the outer side of the combustion chamber.

[0012] In some possible embodiments, the mute shell is provided with a mounting groove at the lower end of the heat dissipation hole.

[0013] In some possible embodiments, the mute shell is provided with a flange towards the inner cavity of the gas water heater at the outer periphery thereof.

[0014] In some possible embodiments, the exhaust fan is provided with an upward air outlet, and the motor of the exhaust fan is vertically laid at the upper end of the fan smoke stand.

[0015] In some possible embodiments, the upper end of the heat exchanger is provided with a heat exchange pipe, and the heat exchange pipe is placed in a single layer in the heat exchanger. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic view of the inner cavity of a small-sized gas water heater without coil pipe according to the present application;

[0017] Figure 2 is a schematic view of the mounting position of the mute shell according to the present application;

[0018] Figure 3 is a schematic view of the back of the mute shell according to the present application;

[0019] Figure 4 is a schematic view of the combustion chamber and the heat exchanger shell according to the present application;

[0020] Figure 5 is a schematic view of the inner cavity structure of the gas water heater according to the present application;

[0021] Figure 6 is a schematic view of an existing gas water heater. DETAILED DESCRIPTION

[0022] The features of the present application and other related features are further described in detail by way of examples as follows, so as to facilitate the understanding of the skilled in the art:

[0023] It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a particular component.

[0024] Further, unless otherwise clearly indicated or implied to the contrary by context, the words "mounting", "connected", "connecting", or "connection" should be construed broadly using ordinary meaning, for example, it can be fixed connection, or detachable connection, or integral connection; it can be direct connection, or indirect connection through an intermediate medium; it can be internal connection of two elements. For those skilled in the art, the specific meaning of the above terms in the present case can be understood according to the specific circumstances.

[0025] Please refer to Figure 6 , the traditional gas water heater tends to be large in size, which limits its application in limited space environment. For example, the coil heat exchanger 100 is used, and the vertical motor 200 is used when the exhaust is arranged. This design is generally used when the overall burner size and the quiet problem are not considered.

[0026] This structure mostly uses to increase the combustion and exhaust capacity by increasing the air volume. At this time, the excessive air volume first causes the noise, and the excessive air volume also affects the combustion stability.

[0027] Please refer to Figure 1 and Figure 2 , the water flow direction of the gas water heater includes the cold water inlet 10, the cold water passes through the water flow sensor 11, and is discharged from the hot water outlet 12 after being heated by the heat exchanger 20. The combustion of gas enters from the gas inlet 30, passes through the gas proportional valve 31, and is combusted in the combustion chamber 32. The hot gas generated by the combustion chamber 32 heats the hot water in the heat exchanger 20, and then is discharged by the exhaust fan 40. The process is controlled by the controller 50. The control method of the entire gas water heater is a relatively mature scheme in the industry, which will not be described in detail in this embodiment.

[0028] Please continue to refer to Figure 1 and Figure 2 , the present application provides a small-sized gas water heater without coil, which comprises a combustion chamber 32, the internal structure of which is described in combination with reference to Figure 4 , the combustion chamber 32 is provided with a burner 321, and a heat insulation plate 322 is arranged on the front side of the burner 321, that is, the side facing the user after installation, and a combustion outer frame 323 is arranged.

[0029] A heat exchanger 20 is arranged at the upper end of the combustion chamber 32. The heat exchanger 20 is a heat exchange device without a shell coil, and a heat exchange outer frame 21 is arranged on the outer periphery of the heat exchanger 20. The heat exchanger designed without a shell coil greatly reduces the risk of water leakage that may be caused by the traditional coil structure.

[0030] Further, a fan smoke stand 41 and an exhaust fan 40 are arranged at the upper end of the heat exchanger 20. The use of a heat exchanger without a shell will increase heat radiation and affect the heat exchange effect. To this end, the gas water heater further comprises a mute shell 60 covering the combustion chamber 32, the heat exchanger 20 and the fan smoke stand 41.

[0031] In this way, the design of the mute shell 60 covering the combustion chamber 32, the heat exchanger 20 and the fan smoke stand 41 can improve the overall stability of the combustion area of the gas water heater, effectively isolate the noise generated during combustion and exhaust, and has certain heat insulation function, thereby improving the user's comfort.

[0032] Please refer to Figure 2 and Figure 3 . Specifically, the mute shell 60 is provided with a boss 61 protruding towards the inner cavity of the gas water heater, and the boss 61 corresponds to and abuts against the heat exchanger 20. That is, the connection is arranged at the boss 61 and the heat exchanger 20. Further, the boss 61 and the heat exchanger 20 are connected by means of detachable screws or the like. The screwing part can be provided with a stud 62. In this way, the boss 61 forms a partition gap between the heat exchanger 20 and the mute shell 61, further improving the heat insulation performance and mute effect.

[0033] Further, a heat dissipation hole 63 is arranged on the corresponding outer side of the mute shell 60 corresponding to the combustion chamber 32, and a mounting groove 64 is arranged at the lower end of the heat dissipation hole 63, so that the display accessories can be installed on the front. Through the design of the heat dissipation hole 63 and the mounting groove 64, even if the mute shell 60 is increased to solve the mute and heat insulation, the display accessory installation effect in a small space can also be realized. The mute shell 60 is further provided with a flange 65 towards the inner cavity of the gas water heater.

[0034] Please refer to Figure 5 , on this basis, in order to further improve the mute effect and miniaturization design requirement, in some embodiments, the exhaust port 42 of the exhaust fan 40 is designed to be upward exhaust. At the same time, the motor of the exhaust fan 40 is arranged vertically and horizontally, and is arranged at the upper end of the fan smoke stand 41.

[0035] This structure has large overall air intake, and the air volume is large under the same speed, and the operation noise of the overall gas water heater is relatively small. At the same time, the overall size of the gas water heater is further miniaturized due to the horizontal placement of the fan smoke stand 41 and the motor, and the installation position is more extensive, and it is not affected by the small space.

[0036] Further, the upper end of the heat exchanger 20 is provided with a heat exchange pipe 22, and the heat exchange pipe 22 is arranged in a single layer in the heat exchanger 20, further reducing the design size of the overall gas water heater.

[0037] As described above, the present application protects a small disc tube-free gas water heater, all the same or similar technical solutions should be shown to fall within the scope of the present application.

Claims

1. A small, coil-less gas water heater, characterized in that, It includes a combustion chamber (32), a heat exchanger (20), a fan smoke holder (41), and an exhaust fan (40) arranged sequentially at the upper end of the combustion chamber (32). The combustion chamber (32) is equipped with a burner (321), and the heat exchanger (20) is a heat exchange device without a shell and with coiled tubes. It also includes a soundproof housing (60) covering the combustion chamber (32), heat exchanger (20), and fan smoke holder (41).

2. A small, coil-less gas water heater as described in claim 1, characterized in that, The silent housing (60) is provided with a boss (61) that protrudes toward the inner cavity of the gas water heater and docks with the heat exchanger (20).

3. A small, coil-less gas water heater as described in claim 1, characterized in that, The silent housing (60) has heat dissipation holes (63) on the outer side corresponding to the combustion chamber (32).

4. A small, coil-less gas water heater as described in claim 3, characterized in that, The silent housing (60) has a mounting groove (64) at the lower end of the heat dissipation hole (63).

5. A small, coil-less gas water heater as described in claim 1, characterized in that, The silent housing (60) has a flange (65) on its outer periphery facing the inner cavity of the gas water heater.

6. A small, coil-less gas water heater as described in claim 1, characterized in that, The exhaust fan (40) is provided with an upward exhaust port (42), and the motor of the exhaust fan (40) is vertically and horizontally arranged at the upper end of the fan smoke holder (41) with the exhaust port (42).

7. A small, coil-less gas water heater as described in claim 1, characterized in that, The heat exchanger (20) is provided with a heat exchange tube (22) at its upper end, and the heat exchange tube (22) is arranged in a single layer in the heat exchanger (20).

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