A small-volume gas water heater

Abstract

The utility model discloses a small-volume gas water heater, comprising: an outer shell, a burner, a heat exchanger and a horizontal fan arranged in the outer shell in sequence from bottom to top, the bottom of the burner is arranged close to the inner bottom surface of the outer shell, and only a gap is provided between the bottom of the burner and the inner bottom surface of the outer shell for air to enter the burner from the bottom of the burner; the horizontal fan comprises a horizontal volute and a suction fan, the horizontal volute is connected to the heat exchanger, the horizontal volute has an air outlet, and the air outlet is connected to an external smoke exhaust pipe. The utility model arranges a horizontal fan to reduce the height of the suction fan, and the burner is arranged close to the inner bottom surface of the outer shell, and only a gap is left between the burner and the inner bottom surface of the outer shell for air to enter, which further reduces the height of the outer shell, so that the occupied space of the gas water heater is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of water heaters, and in particular to a small-volume gas water heater. Background Art

[0002] Existing gas water heaters generally include a casing, a burner, a heat exchanger, a suction fan and other components. Due to the unreasonable layout (for example, there is a large space between the bottom of the burner and the bottom of the casing, and the space is used to place other components such as the gas inlet and the pipe connecting the gas inlet; for example, the suction fan adopts a vertically arranged fan), it is easy to cause the overall height of the gas water heater to be too large, which cannot meet the needs of consumers who want to reduce the space occupied by the gas water heater. Summary of the invention

[0003] The main purpose of the present invention is to provide a small-volume gas water heater, aiming to solve the problem that the gas water heater is too high.

[0004] In order to achieve the above object, the technical solutions of the present invention are:

[0005] The utility model discloses a small-volume gas water heater, comprising: an outer shell, a burner, a heat exchanger and a horizontal fan which are arranged in the outer shell in sequence from bottom to top, the bottom of the burner is arranged close to the inner bottom surface of the outer shell, and only a gap is provided between the bottom of the burner and the inner bottom surface of the outer shell for air to enter the burner from the bottom of the burner; the horizontal fan comprises a horizontal volute and a suction fan, the horizontal volute is connected to the heat exchanger, the horizontal volute has an air outlet, and the air outlet is communicated with an external smoke exhaust pipe.

[0006] Compared with the prior art, the utility model arranges a horizontal fan to reduce the height of the suction fan, and the burner is arranged close to the inner bottom surface of the outer shell, leaving only a gap between the burner and the inner bottom surface of the outer shell for air to enter, further reducing the height of the outer shell, thereby reducing the occupied space of the gas water heater.

[0007] In a preferred embodiment, the small-volume gas water heater also includes a water outlet, which is arranged at the bottom of the shell and located on the left side of the burner; the heat exchanger has a water outlet pipe, which is connected to the water outlet; wherein the water outlet is arranged close to the left wall of the shell.

[0008] In a preferred embodiment, the small-volume gas water heater also includes a gas distribution device and a gas proportional valve, the gas proportional valve is connected to the gas distribution device, the gas distribution device is connected to the burner, and the gas distribution device and the gas proportional valve are both arranged on the right side of the burner; the gas proportional valve has a gas inlet, and the gas inlet is arranged on the right side of the gas distribution device and protrudes from the bottom of the outer shell.

[0009] In a preferred embodiment, the gas distribution device includes a gas distribution rod, a first solenoid valve and a second solenoid valve, and an air inlet and a plurality of air outlets connected to the air inlet are arranged on the gas distribution rod, the air inlet is connected to the gas proportional valve, each air outlet is correspondingly connected to a single burner, and the plurality of air outlets are divided into a normally open air outlet, a first segmented air outlet and a second segmented air outlet, wherein the first segmented air outlet is controlled to open and close by the first solenoid valve, and the second segmented air outlet is controlled to open and close by the second solenoid valve.

[0010] In a preferred embodiment, the number of the normally open air outlet is 1; the number of the first segmented air outlet is 2; and the number of the second segmented air outlet is 4.

[0011] In a preferred embodiment, the small-volume gas water heater also includes a cold water inlet, which is located on the right side of the burner and in front of the gas inlet, and the cold water inlet is connected to the heat exchanger via a pipe.

[0012] In a preferred embodiment, the small-volume gas water heater further comprises a water flow sensor, and the water flow sensor is vertically arranged between the cold water inlet and the pipeline.

[0013] In a preferred embodiment, a smoke collecting hood is provided between the horizontal volute and the heat exchanger.

[0014] For better understanding and implementation, the present invention is described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 It is a three-dimensional schematic diagram of a small-volume gas water heater;

[0017] Figure 2 It is a front view schematic diagram of a small-volume gas water heater;

[0018] Figure 3It is a schematic diagram of the cross-sectional structure of the gas distribution device.

[0019] Description of reference numerals:

[0020] 1 housing, 10 water flow sensor, 11 smoke hood, 2 burner, 3 heat exchanger, 4 horizontal fan, 41 horizontal volute, 42 suction fan, 43 air outlet, 5 gap, 6 water outlet, 7 gas distribution device, 71 gas distribution rod, 72 first solenoid valve, 73 second solenoid valve, 74 normally open air outlet, 75 first segmented air outlet, 76 second segmented air outlet, 8 gas proportional valve, 9 cold water inlet. DETAILED DESCRIPTION

[0021] In order to better illustrate the present invention, the present invention is further described in detail below with reference to the accompanying drawings.

[0022] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the embodiments of the present application.

[0023] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0024] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and do not have to be used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0025] In addition, in the description of this application, unless otherwise specified, "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0026] refer to Figures 1 to 3 As shown, the utility model discloses a small-volume gas water heater, comprising: an outer shell 1, a burner 2, a heat exchanger 3 and a horizontal fan 4 arranged in the outer shell 1 from bottom to top, the bottom of the burner 2 is arranged close to the inner bottom surface of the outer shell 1, and only a gap 5 is provided between the bottom of the burner 2 and the inner bottom surface of the outer shell 1 for air to enter the burner 2 from the bottom of the burner 2; the horizontal fan 4 comprises a horizontal volute 41 and a suction fan 42, the horizontal volute 41 is connected to the heat exchanger 3, and the horizontal volute 41 has an air outlet 43, and the air outlet 43 is connected to an external smoke exhaust pipe.

[0027] Compared with the prior art, the utility model arranges a horizontal fan 4 to reduce the height of the suction fan 42, and the burner 2 is arranged close to the inner bottom surface of the outer shell 1, and only a gap 5 for air to enter is left between the burner 2 and the inner bottom surface of the outer shell 1, which further reduces the height of the outer shell 1, thereby reducing the occupied space of the gas water heater.

[0028] In one embodiment, the small-volume gas water heater also includes a water outlet 6, which is arranged at the bottom of the shell 1 and located on the left side of the burner 2; the heat exchanger 3 has a water outlet pipe, which is connected to the water outlet 6, wherein the water outlet 6 is arranged close to the left wall of the shell 1 to minimize the occupied space on the left side of the burner 2 and reduce the length of the gas water heater.

[0029] Furthermore, the small-volume gas water heater further comprises a gas distribution device 7 and a gas proportional valve 8, wherein the gas proportional valve 8 is connected to the gas distribution device 7, and the gas distribution device 7 is connected to the burner 2, and both the gas distribution device 7 and the gas proportional valve 8 are arranged on the right side of the burner 2; the gas proportional valve 8 has a gas inlet, which is arranged on the right side of the gas distribution device 7 and protrudes from the bottom of the housing 1. The space position on the right side of the burner 2 is fully utilized, and the gas distribution device 7, the gas proportional valve 8 and the gas inlet are all arranged in the space on the right side of the burner 2 to free up the original open space under the burner 2 and reduce the height of the gas water heater; and, by reasonably designing and distributing the positions of the gas distribution device 7 and the gas proportional valve 8, the space on the right side of the burner 2 is only slightly larger than before, and the overall volume of the gas water heater is smaller than before.

[0030] Furthermore, the gas distribution device 7 includes a gas distribution rod 71, a first solenoid valve 72 and a second solenoid valve 73. An air inlet and a plurality of air outlets 43 connected to the air inlet are provided on the gas distribution rod 71. The air inlet is connected to the gas proportional valve 8. Each air outlet 43 is connected to a single burner 2. The plurality of air outlets 43 are divided into a normally open air outlet 74, a first segmented air outlet 75 and a second segmented air outlet 76. The first segmented air outlet 75 is opened and closed by the first solenoid valve 72, and the second segmented air outlet 76 is opened and closed by the second solenoid valve 73. Four different firepower adjustment degrees are achieved by opening and closing the two solenoid valves, and the firepower adjustment range is wide. Specifically, when the first solenoid valve 72 and the second solenoid valve 73 are closed, the first segmented air outlet 75 and the second segmented air outlet 76 are closed, and the gas can only enter the burner 2 through the normally open air outlet 74; when the first solenoid valve 72 is opened and the second solenoid valve 73 is closed, the gas enters the burner 2 through the normally open air outlet 74 and the first segmented air outlet 75; when the first solenoid valve 72 is closed and the second solenoid valve 73 is opened, the gas enters the burner 2 through the normally open air outlet 74 and the second segmented air outlet 76; when the first solenoid valve 72 and the second solenoid valve 73 are both opened, the gas enters the burner 2 through the normally open air outlet 74, the first segmented air outlet 75 and the second segmented air outlet 76.

[0031] Preferably, the number of the normally open air outlet 74 is 1; the number of the first segmented air outlet 75 is 2; and the number of the second segmented air outlet 76 is 4.

[0032] Furthermore, the small-volume gas water heater further comprises a cold water inlet 9, which is located on the right side of the burner 2 and in front of the gas inlet, and is connected to the heat exchanger 3 via a pipeline. The cold water inlet and the gas inlet are arranged in a front-to-back manner, which is conducive to making full use of the space on the right side of the burner to reasonably distribute the positions of the components.

[0033] Furthermore, the small-volume gas water heater also includes a water flow sensor 10, which is vertically arranged between the cold water inlet 9 and the pipeline. The water flow sensor 10 is used to monitor the water flow rate. The vertical arrangement is conducive to reasonable space design, freeing up the space behind the water flow sensor for the installation of the gas proportional valve.

[0034] In one embodiment, a smoke collecting hood 11 is provided between the horizontal volute 41 and the heat exchanger 3 , and smoke in the heat exchanger 3 is collected into the horizontal volute 41 through the smoke collecting hood 11 , and then discharged to the outside of the housing 1 through the suction fan 42 .

[0035] The present invention is not limited to the above-mentioned embodiments. If various changes or modifications to the present invention do not depart from the spirit and scope of the present invention, and if these changes and modifications fall within the scope of the claims and equivalent technologies of the present invention, the present invention is also intended to include these changes and modifications.

Claims

1. A small-volume gas water heater, comprising: A shell, a burner, a heat exchanger and a horizontal fan are sequentially arranged in the shell from bottom to top, characterized in that: The bottom of the burner is arranged close to the inner bottom surface of the shell, and there is only a gap between the bottom of the burner and the inner bottom surface of the shell for air to enter the burner from the bottom of the burner; The horizontal fan comprises a horizontal volute and a suction fan, the horizontal volute is connected to the heat exchanger, the horizontal volute has an air outlet, and the air outlet is communicated with an external smoke exhaust pipe.

2. The small-volume gas water heater according to claim 1, characterized in that: The small-volume gas water heater also includes a water outlet, which is arranged at the bottom of the shell and located on the left side of the burner; the heat exchanger has a water outlet pipe, which is connected to the water outlet; wherein the water outlet is arranged close to the left wall of the shell.

3. The small-volume gas water heater according to claim 1 or 2, characterized in that: The small-volume gas water heater also includes a gas distribution device and a gas proportional valve, the gas proportional valve is connected to the gas distribution device, the gas distribution device is connected to the burner, and the gas distribution device and the gas proportional valve are both arranged on the right side of the burner; the gas proportional valve has a gas inlet, and the gas inlet is arranged on the right side of the gas distribution device and protrudes from the bottom of the outer shell.

4. The small-volume gas water heater according to claim 3, characterized in that: The gas distribution device includes a gas distribution rod, a first solenoid valve and a second solenoid valve. An air inlet and a plurality of air outlets connected to the air inlet are arranged on the gas distribution rod. The air inlet is connected to the gas proportional valve. Each air outlet is connected to a single burner. The plurality of air outlets are divided into a normally open air outlet, a first segmented air outlet and a second segmented air outlet. The first segmented air outlet is opened and closed by the first solenoid valve, and the second segmented air outlet is opened and closed by the second solenoid valve.

5. The small-volume gas water heater according to claim 4, characterized in that: The number of the normally open air outlet is 1; The number of the first segmented air outlets is 2; The number of the second segment air outlets is 4.

6. The small-volume gas water heater according to claim 3, characterized in that: The small-volume gas water heater also includes a cold water inlet, which is located on the right side of the burner and in front of the gas inlet, and is connected to the heat exchanger via a pipeline.

7. The small-volume gas water heater according to claim 6, characterized in that: The small-volume gas water heater further comprises a water flow sensor, which is arranged vertically between the cold water inlet and the pipeline.

8. The small-volume gas water heater according to claim 1, characterized in that: A smoke collecting hood is arranged between the horizontal volute and the heat exchanger.

Images