Water storage structure and gas water heater with high heat utilization rate

Abstract

A water storage structure and a gas water heater with high heat utilization rate belong to the technical field of household appliances. The structure includes a burner and a heat exchange device arranged on the outflow path of the burner smoke, and also includes: a water storage component arranged outside the heat exchange device in a close relationship, the water storage component has a first connecting curved surface with multiple undulations, the heat exchange device has a second connecting curved surface with multiple undulations, the first connecting curved surface and the second connecting curved surface are in close relationship to form a connecting structure, the heat exchange device and the water storage component are connected through the connecting structure; a water storage cavity is arranged in the water storage component, the water storage cavity is connected to the water flow channel of the heat exchange device, and the water storage component also includes a water inlet and a water outlet arranged thereon. The above-mentioned water storage component and the heat exchange device are in a close relationship, and can absorb the heat on the surface of the heat exchange device for preheating, which can improve the utilization rate of heat.

Description

Technical Field

[0001] The invention belongs to the technical field of household appliances, and in particular relates to a water storage structure and a gas water heater with high heat utilization rate. Background Art

[0002] A gas water heater is a gas water heater that uses gas as fuel and transfers heat to cold water flowing through a heat exchanger through combustion heating to prepare hot water. However, in the prior art, the burner inside the gas water heater heats the water after heat exchange through the heat exchanger, and the heat in the heat exchanger is inevitably lost by conduction to the surface of the heat exchanger. In other words, the heat exchanger, as a heat exchange component, does not effectively utilize the heat it conducts to the outside. At the same time, there is a demand to further shorten the time users have to wait for hot water to be heated. Therefore, how to further improve the heat utilization rate of the gas water heater and thereby shorten the time users have to wait for hot water to be heated is a technical problem that needs to be solved urgently. Summary of the invention

[0003] In order to solve the above technical problems, the present application further improves the internal structure of the gas water heater, in order to further improve the heat utilization rate of the heat exchange device, and thereby shorten the time users wait for hot water to be heated. One of the purposes of the present invention is to provide a water storage structure with high heat utilization rate, and the second purpose is to provide a corresponding gas water heater.

[0004] The specific technical solution is described below:

[0005] A water storage structure with high heat utilization rate includes a burner and a heat exchange device arranged on the outflow path of the burner flue gas, and also includes:

[0006] A water storage component is arranged outside the heat exchange device, the water storage component has a first connecting curved surface with multiple undulations, the heat exchange device has a second connecting curved surface with multiple undulations, the first connecting curved surface and the second connecting curved surface are fitted together to form a connecting structure, and the heat exchange device and the water storage component are connected via the connecting structure;

[0007] A water storage cavity is arranged in the water storage component, and the water storage cavity is communicated with the water flow channel of the heat exchange device. The water storage component also includes a water inlet and a water outlet arranged thereon.

[0008] In the above technical solution, the water storage component and the heat exchange device are closely arranged, which can facilitate the absorption of heat on the surface of the heat exchange device for preheating, thereby improving the utilization rate of heat. Since the heat is absorbed by the water tank, the heated water in the water tank has reached a certain temperature, so using it for preheating of hot water can shorten the time users have to wait for hot water.

[0009] Among them, the important ones are:

[0010] Firstly, the first connecting curved surface and the second connecting curved surface are connected by curved surfaces with matching shapes, which can increase the contact area between the water storage component and the heat exchange device to improve the heat exchange efficiency;

[0011] Secondly, a concave-convex snap-fit ​​structure is formed between the first connecting curved surface and the second connecting curved surface, which facilitates the positioning of the water storage component and the heat exchange device and makes the connection between the two more secure;

[0012] Finally, the first connecting curved surface also forms a concave-convex structure in the water storage component, so that water flows into the water storage component from the water inlet and exchanges heat after flowing through the concave-convex structure, and then more collisions and changes in flow direction occur, so that the water storage component absorbs heat more fully;

[0013] Similarly, the second connecting curved surface also forms a concave-convex structure in the heat exchange device, so that when water flows through the concave-convex structure, it has a flow state that is more turbulent, thereby improving the heat exchange efficiency in the heat exchange device.

[0014] Preferably, the fitting surface of the connection structure has a wavy fitting shape in cross section.

[0015] Further preferably, the undulating direction of the fitting shape conforms to the water inlet direction of the water inlet, so that the flow direction of water after entering the water storage component directly acts on the undulating wave structure, thereby transferring heat in the water storage cavity more fully and quickly.

[0016] Preferably, the water storage component is arranged to fit on a side wall of the heat exchange device with a larger area. The larger the fitting area is, the easier it is for the water storage component to absorb heat.

[0017] Preferably, the water inlet is arranged at the lower part of the water storage component, and the water outlet is arranged at the upper part of the water storage component. Water enters from the bottom and exits from the top, which can increase the residence time of water and absorb heat more fully.

[0018] Preferably, the water storage component also includes an electric auxiliary heating device, which assists in heating the water in the water storage chamber, thereby reducing the user's waiting time and improving the user experience.

[0019] Further preferably, the electric auxiliary heating device includes a heating tube arranged in the water storage chamber and a heating joint arranged outside the water storage chamber, and the heating tube forms a circuitous heating structure in the water storage chamber. The circuitous heating structure increases the heat exchange area and can improve the preheating speed.

[0020] Preferably, the heat exchange device and the water storage assembly form a heat exchange structure, and the heat exchange structure is arranged on the upper surface of the burner. It also includes a fan, which is arranged below the burner, and the air outlet of the fan is arranged upward. It also includes a smoke collection hood, which is arranged on the smoke outlet above the heat exchange device.

[0021] A gas water heater is provided with a water storage structure as described in any of the above technical solutions.

[0022] In summary, the technical solution of the present invention has the following main beneficial effects:

[0023] Compared with the prior art, the water storage assembly and the heat exchange device in the technical solution of the present invention are arranged in close contact, which can facilitate the absorption of heat on the surface of the heat exchange device for preheating, thereby improving the utilization rate of heat. Since the heat is absorbed by the water storage tank, the heated water in the water storage tank has a certain temperature, so using it for preheating hot water can shorten the time users wait for hot water.

[0024] The connection structure formed by the first connection curved surface and the second connection curved surface can increase the contact area between the water storage component and the heat exchange device to improve the heat exchange efficiency;

[0025] A concave-convex snap-fit ​​structure can also be formed to facilitate the positioning of the water storage component and the heat exchange device, making the connection between the two more secure;

[0026] At the same time, the first connecting curved surface also allows water to flow from the water inlet into the water storage component and flow through the concave-convex structure for heat exchange, and then more collisions and changes in flow direction occur, allowing the water storage component to absorb heat more fully; the second connecting curved surface also forms a concave-convex structure in the heat exchange device, so that when the water flows through the concave-convex structure, it has a flow state that is more turbulent, thereby improving the heat exchange efficiency in the heat exchange device.

[0027] The water storage component is provided with an electric auxiliary heating device, which assists in heating the water in the water storage chamber, and can further reduce the user's waiting time and improve the user experience.

[0028] Further or more detailed beneficial effects will be described in detail in conjunction with specific examples in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of the internal plan structure of the gas water heater according to the embodiment;

[0030] Figure 2 yes Figure 1 A schematic diagram of the internal structure of the gas water heater after the water storage assembly is removed;

[0031] Figure 3 is a schematic diagram of the matching structure of the first connecting curved surface and the second connecting curved surface;

[0032] Figure 4 is a schematic structural diagram of the water storage assembly described in the embodiment;

[0033] Figure 5 yes Figure 3 Schematic diagram of the internal structure of the water storage component.

[0034] Reference numerals:

[0035] 1: water storage component, 1.1: water storage chamber, 1.2: water inlet, 1.3: water outlet, 1.4: electric auxiliary heating device, 1.41: heating pipe, 1.42: heating joint, 1.5: first connecting curved surface;

[0036] 2: heat exchange device, 2.1: second connecting surface;

[0037] 3: Burner, 4: Fan, 5: Fume hood. DETAILED DESCRIPTION

[0038] The present invention is further explained with reference to the following embodiments:

[0039] The core technical problem faced by the technical solution of the embodiment of the present application comes from the inventor's accurate understanding of the prior art. Therefore, how to further utilize the heat on the surface of the heat exchange device and improve the heat exchange efficiency is a technical problem that the inventor urgently needs to solve;

[0040] At the same time, how to reduce the user's waiting time and improve the user experience is also a technical problem that the inventors are working hard to solve.

[0041] It should be noted that the embodiments do not constitute a limitation on the protection scope of the claims of the present invention. According to the technical concepts provided / proven by the embodiments, all technical solutions that can be reasonably anticipated by technicians in the relevant technical field should be included in the protection scope of the claims of the present invention.

[0042] The embodiments are described in detail as follows:

[0043] In the prior art, the heat in the heat exchange device 2 is inevitably lost by conduction to the surface, and the heat conducted to the outside by the heat exchange device 2 itself is still not effectively utilized.

[0044] In addition, there is a demand to further shorten the time users have to wait for hot water to be heated;

[0045] Therefore, how to make full use of the heat exchange device 2 to dissipate the lost heat and thereby shorten the time the user waits for the hot water to be heated is a technical problem that needs to be solved urgently in this embodiment.

[0046] In order to solve the above technical problems:

[0047] Please refer to the attached Figures 1 to 5 The present embodiment relates to a water storage structure with high heat utilization rate, including a burner 3 and a heat exchange device 2 arranged on the upper surface of the burner 3, that is, on the outflow path of the smoke of the burner 3, and also including a fan 4 arranged below the burner 3, the air outlet of the fan 4 is arranged upward, that is, blowing air into the burner 3, and a smoke collecting hood 5 is arranged at the smoke outlet above the heat exchange device 2, which is used to collect and discharge the smoke after heat exchange. The heat exchange device 2, the burner 3, the fan 4 and the smoke collecting hood 5 are arranged vertically, which is convenient for arrangement in a relatively narrow gas water heater shell.

[0048] Due to the heat transfer, it is inevitable that a portion of heat will be lost on the surface of the heat exchange device 2. This embodiment aims to make full use of this portion of heat to improve the utilization rate of heat in the gas water heater.

[0049] Specifically, in this embodiment, a water storage component 1 is provided, and a water storage chamber 1.1 in the water storage component 1 is connected to a water flow channel of the heat exchange device 2, that is, the water in the water storage component 1 is preheated and then flows into the heat exchange device 2 for heat exchange;

[0050] The water storage component 1 is arranged on a side surface with a larger area of ​​the side of the heat exchange device 2 to absorb the heat lost by the heat exchange device 2 as much as possible. The lower part of the water storage component 1 is provided with a water inlet 1.2 and the upper part is provided with a water outlet 1.3. The water enters from the bottom and exits from the top to increase its residence time so as to absorb heat more fully.

[0051] Among them, the water storage component 1 has a wavy first connecting surface 1.5, and the heat exchange device 2 has a wavy second connecting surface 2.1. The first connecting surface 1.5 and the second connecting surface 2.1 are interlocked to form a connecting structure. The heat exchange device 2 and the water storage component 1 are connected through the above-mentioned connecting structure. The undulating direction of the fitting shape of the connecting structure is horizontal, and the water inlet direction of the water inlet 1.2 is also horizontal.

[0052] In this embodiment, the water storage component 1 and the heat exchange device 2 are arranged in close contact, which can facilitate the absorption of heat from the surface of the heat exchange device 2 for preheating, and heat exchange is carried out when the heat flows into the heat exchange device 2, thereby improving the utilization rate of heat. At the same time, since the heat is absorbed by the water storage component 1, the heated water in the water storage component 1 has reached a certain temperature, so using it for preheating of hot water can shorten the time users have to wait for hot water.

[0053] More importantly, the first connecting curved surface 1.5 and the second connecting curved surface 2.1 are connected by a wavy curved surface of matching shape, which can increase the contact area between the water storage component 1 and the heat exchange device 2 and improve the heat exchange efficiency;

[0054] Furthermore, the mutually interlocking connection structure is more convenient for positioning the water storage assembly 1 and the heat exchange device 2 than a planar connection, making the connection between the two more secure.

[0055] The first connecting curved surface 1.5 also forms a concave-convex structure inside the water storage component 1, so that water flows into the water storage component 1 from the water inlet 1.2 and directly acts on the concave-convex structure to exchange heat, and then more collisions and changes in flow direction occur, so that the water storage component 1 absorbs heat more fully;

[0056] Similarly, the second connecting curved surface 2.1 also forms a concave-convex structure in the heat exchange device 2, so that when water flows through the concave-convex structure, it has a more turbulent flow state, thereby improving the heat exchange efficiency in the heat exchange device 2.

[0057] Please continue to refer to the attached Figures 1 to 5 In a preferred embodiment, the water storage assembly 1 is further provided with an electric auxiliary heating device 1.4, which includes a heating tube 1.41 arranged in the water storage chamber 1.1 and a heating joint 1.42 arranged outside the water storage chamber 1.1, and the heating tube 1.41 forms a circuitous heating structure in the water storage chamber 1.1.

[0058] In this embodiment, the electric auxiliary heating device 1.4 performs auxiliary heating on the water in the water storage chamber 1.1, which can further reduce the user's waiting time and improve the user experience, while the circuitous heating structure increases the heat exchange area, which can further improve the preheating speed.

[0059] In a preferred embodiment, the heating tube 1.41 is arranged in a vertical coil and has a plurality of flow heat exchange gaps in the vertical direction. In the above embodiment, the first connecting curved surface 1.5 forms a concave-convex structure inside the water storage component 1, so that the water flows into the water storage component 1 from the water inlet 1.2 and undergoes more collisions and changes in flow direction. On this basis, the present embodiment provides the above-mentioned flow heat exchange gap for the water flow with constantly changing flow state. After changing the flow direction, the water flow will often flow in and out of the flow heat exchange gap, and both sides of the flow heat exchange gap are also the places for heat exchange of the heating tube 1.41. Therefore, the present embodiment combines the vertical heating tube 1.41 structure with a plurality of flow heat exchange gaps with the first connecting curved surface 1.5 in the above embodiment, thereby once again improving the heat exchange efficiency of water.

[0060] The embodiment also relates to a gas water heater, in which a water storage structure for absorbing waste heat of the heat exchange device described in any of the above embodiments is arranged.

[0061] In the description of this specification, the description with reference to the terms "embodiment", "basic embodiment", "preferred embodiment", "other embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0062] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0063] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A water storage structure with high heat utilization rate, comprising a burner (3) and a heat exchange device (2) arranged on a flue gas outflow path of the burner (3), characterized in that: Also included are: A water storage component (1) arranged outside the heat exchange device (2), the water storage component (1) having a first connecting curved surface (1.5) with multiple undulations, the heat exchange device (2) having a second connecting curved surface (2.1) with multiple undulations, the first connecting curved surface (1.5) and the second connecting curved surface (2.1) being fitted together to form a connecting structure, and the heat exchange device (2) and the water storage component (1) being connected via the connecting structure; The water storage component (1) is provided with a water storage chamber (1.1), the water storage chamber (1.1) is connected to the water flow channel of the heat exchange device (2), and the water storage component (1) also includes a water inlet (1.2) and a water outlet (1.3) provided thereon; The water storage component (1) is arranged in a close-fitting manner on a side wall of the heat exchange device (2) having a larger area; The heat exchange device (2) and the water storage assembly (1) form a heat exchange structure, and the heat exchange structure is arranged on the upper surface of the burner (3) in a close fit.

2. The water storage structure according to claim 1, characterized in that: The fitting surface of the connection structure has a wavy fitting shape in cross section.

3. The water storage structure according to claim 2, characterized in that: The undulating direction of the fitted shape conforms to the water inlet direction of the water inlet (1.2).

4. The water storage structure according to claim 1, characterized in that: The water inlet (1.2) is arranged at the lower part of the water storage component (1), and the water outlet (1.3) is arranged at the upper part of the water storage component (1).

5. The water storage structure according to claim 1, characterized in that: The water storage component (1) also includes an electric auxiliary heating device (1.4).

6. The water storage structure according to claim 5, characterized in that: The electric auxiliary heating device (1.4) comprises a heating tube (1.41) arranged in the water storage chamber (1.1) and a heating joint (1.42) arranged outside the water storage chamber (1.1).

7. The water storage structure according to claim 6, characterized in that: The heating tube (1.41) forms a circuitous heating structure in the water storage chamber (1.1).

8. The water storage structure according to claim 1, characterized in that: It also comprises a fan (4), wherein the fan (4) is arranged below the burner (3), and an air outlet of the fan (4) is arranged upwards.

9. The water storage structure according to claim 8, characterized in that: It also comprises a smoke collecting hood (5), which is arranged snugly at the smoke outlet above the heat exchange device (2).

10. Gas water heater, characterized in that: A water storage structure according to any one of claims 1 to 9 is arranged inside.

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