Heat exchanger integrated with buffer tube and water heater thereof

Abstract

The utility model discloses a buffer tube integrated heat exchanger and a water heater thereof, the heat exchanger comprises a heat exchange tube, a heat absorption sheet group and two end plates, the heat exchange tube is provided with a water inlet section, a transition section and a water outlet section from top to bottom in sequence between the two end plates, and the water inlet section, the transition section and the water outlet section are all of coil pipe structures. The water inlet section is sleeved with the heat absorption piece set. And a slow flow sheet is arranged at the starting end of the water inlet section. The water inlet section, the transition section and the water outlet section are sequentially formed from top to bottom, so that the length of the heat exchange pipe is increased, more water is contained in the heat exchange pipe for heat exchange and buffer temporary storage, integration of the buffer pipe is achieved, the water heater does not need to be additionally provided with the buffer pipe, cost is reduced, and miniaturization and light weight of the water heater can be achieved easily.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a heat exchanger with integrated buffer tubes and a water heater thereof. Background Art

[0002] A gas water heater, also known as a gas water heater, is a gas appliance that uses gas as fuel and transfers heat to cold water flowing through a heat exchanger through combustion heating to prepare hot water. Existing gas water heaters transfer the hot water output from the heat exchanger to a built-in buffer tube for buffering before outputting it. The independent buffer tube takes up a certain amount of space inside the water heater, which is not conducive to the development of cost reduction, miniaturization and lightweighting. Utility Model Content

[0003] In view of the above-mentioned defects, the utility model proposes a heat exchanger with an integrated buffer tube and a water heater thereof, which does not require an additional buffer tube, reduces costs, and is conducive to miniaturization and lightweighting of the water heater.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A heat exchanger with integrated buffer tubes, comprising a heat exchange tube, a heat absorbing fin group and two end plates, wherein the heat exchange tube is arranged circuitously and disposed on the two end plates, and the heat absorbing fin group is sleeved on the heat exchange tube and located between the two end plates;

[0006] The heat exchange tube is provided with a water inlet section, a transition section and a water outlet section from top to bottom between the two end plates. The inlet end of the heat exchange tube is arranged upstream of the water inlet section, and the outlet end of the heat exchange tube is arranged downstream of the water outlet section. The water inlet section, the transition section and the water outlet section are all in a coil structure, and the heat absorbing sheet group is sleeved on the water inlet section.

[0007] A slow flow sheet is provided at the beginning of the water inlet section.

[0008] Furthermore, the water outlet section is provided with a plurality of water storage branches, which are distributed at intervals and are all connected to the water outlet section.

[0009] Furthermore, the length direction of the slow-flow sheet is parallel to the water flow direction, and the slow-flow sheet is spiral.

[0010] Furthermore, the flow-delaying sheet extends to the transition section and the water outlet section.

[0011] Furthermore, the pipe diameter of the water storage branch section is smaller than the pipe diameter of the water outlet section, and the water storage branch section is in a U-shape.

[0012] Furthermore, the heat exchange tube is made of stainless steel.

[0013] Furthermore, a water heater is provided with the heat exchanger with the integrated buffer tube.

[0014] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0015] The heat exchanger with integrated buffer tubes is provided with multiple sections of heat exchange tubes stacked up and down between two end plates, forming a water inlet section, a transition section and a water outlet section from top to bottom in order to extend the length of the heat exchange tubes, so that more water can be accommodated in the heat exchange tubes for heat exchange and temporary buffer storage, and the buffer tubes are integrated, so that the water heater does not need to be additionally provided with buffer tubes, which reduces costs and is conducive to miniaturization and light weight of the water heater. A slow flow sheet is provided at the beginning of the water inlet section to slow down the flow of the pumped water to reduce the flow rate, prolong the residence time of the water in the heat exchange tubes, and play the role of a buffer tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a water heater with a heat exchanger according to one embodiment of the utility model;

[0017] Figure 2 is a schematic diagram of a heat exchanger with integrated buffer tubes according to one embodiment of the present invention;

[0018] Figure 3 It is a side view of a heat exchanger according to one embodiment of the present utility model;

[0019] Figure 4 This is a cross-sectional view of a heat exchanger according to one embodiment of the present invention. Figure I ;

[0020] Figure 5 A cross-sectional view of a heat exchanger according to another embodiment of the present invention Figure II .

[0021] Among them, the heat exchange tube 1; the heat absorption plate group 2; the end plate 3; the water inlet section 11; the transition section 12; the water outlet section 13; the slow flow plate 111; the water storage branch section 131; the heat exchanger 10; the water heater 100; the burner 20; and the fan assembly 30. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0023] In the description of the present invention, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is more than two.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "splicing", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Embodiment 1

[0027] Combine the following Figures 1 to 5 , describes a heat exchanger with integrated buffer tube according to an embodiment of the utility model, comprising a heat exchange tube 1, a heat absorbing plate group 2 and two end plates 3, wherein the heat exchange tube 1 is arranged circuitously and disposed on the two end plates 3, and the heat absorbing plate group 2 is sleeved on the heat exchange tube 1 and located between the two end plates 3,

[0028] The heat exchange tube 1 is provided with a water inlet section 11, a transition section 12 and a water outlet section 13 from top to bottom between the two end plates 3. The inlet end of the heat exchange tube 1 is arranged upstream of the water inlet section 11, and the outlet end of the heat exchange tube 1 is arranged downstream of the water outlet section 13. The water inlet section 11, the transition section 12 and the water outlet section 13 are all in a coil structure, and the heat absorbing sheet group 2 is sleeved on the water inlet section 11;

[0029] A slow flow sheet 111 is provided at the beginning of the water inlet section 11 .

[0030] The heat exchanger of the integrated buffer pipe forms a water inlet section 11, a transition section 12, and a water outlet section 13 by stacking multiple sections of heat exchange pipes 1 vertically between two end plates 3 from top to bottom, so as to extend the length of the heat exchange pipe 1, allowing more water to be contained in the heat exchange pipe 1 for heat exchange and buffer storage, realizing the integration of the buffer pipe. Thus, the water heater does not need to be provided with an additional buffer pipe, reducing costs and facilitating the miniaturization and lightweight of the water heater. A flow slowing piece 111 is provided at the starting end of the water inlet section 11 to slow down the pumped water flow to reduce the flow rate and extend the residence time of the water body in the heat exchange pipe 1, acting as a buffer pipe.

[0031] Specifically, since the water inlet section 11 is arranged at the top and is far from the burner 20 of the water heater 100, a heat absorption fin group 2 is provided to assist in heat absorption for heat exchange.

[0032] The material of the heat exchange pipe 1 is stainless steel, which is firm, heat-resistant and durable.

[0033] In some embodiments, the water outlet section 13 is provided with a plurality of water storage branch sections 131. As Figure 5 shown, the plurality of water storage branch sections 131 are spaced apart and are all communicated with the water outlet section 13. Thus, when the water body enters the water outlet section 13, it is not directly output, but is diverted to each water storage branch section 131. On the one hand, it increases the water storage capacity of the heat exchange pipe 1, and on the other hand, it can extend the residence time of the water body in the water outlet section 13 to buffer the water body. The water storage branch sections 131 can be arranged at any position of the water outlet section 13, preferably at the bottom of the water outlet section 13, and the gravity of water can be utilized to assist in diversion, and the buffering effect is better.

[0034] It should be noted that the diameter of the water storage branch section 131 is smaller than that of the water outlet section 13, and the water storage branch section 131 is in a U-shaped. The diameter of the water storage branch section 131 being smaller than that of the water outlet section 13 ensures the water outlet efficiency of the water outlet section 13; the water storage branch section 131 being in a U-shaped can form a horizontal part conducive to buffering the water body.

[0035] Furthermore, the length direction of the flow slowing piece 111 is parallel to the water flow direction, and the flow slowing piece 111 is in a spiral shape. The flow slowing piece 111 plays a certain role in blocking and disturbing the input water flow, thereby reducing the incoming water flow speed and realizing flow slowing.

[0036] Even further, the flow slowing piece 111 extends to the transition section 12 and the water outlet section 13, as Figure 4 and Figure 5 shown. Thus, the flow slowing effect of the transition section 12 and the water outlet section 13 is improved, and the residence time of the water body in the heat exchange pipe 1 is further extended, acting as a buffer pipe.

[0037] Embodiment 2

[0038] This embodiment describes a water heater 100, which is provided with a heat exchanger 10 with an integrated buffer tube as described in the first embodiment. The heat exchanger 10 is located between the burner 20 and the fan assembly 30, and the water outlet section 13 faces the burner 20, and the water inlet section 11 faces the fan assembly 30. Therefore, the water heater 100 does not need to be additionally provided with a buffer tube, which reduces the cost and is conducive to miniaturization and lightness of the water heater 100.

[0039] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A heat exchanger integrated with a buffer pipe, comprising a heat exchange pipe, a heat absorption fin group and two end plates. The heat exchange pipe is arranged in a meandering manner and is disposed on the two end plates. The heat absorption fin group is sleeved on the heat exchange pipe and is located between the two end plates. It is characterized in that: The heat exchange pipe is successively provided with a water inlet section, a transition section and a water outlet section from top to bottom between the two end plates. The inlet end of the heat exchange pipe is arranged upstream of the water inlet section, and the outlet end of the heat exchange pipe is arranged downstream of the water outlet section. The water inlet section, the transition section and the water outlet section are all in a coiled pipe structure, and the heat absorption fin group is sleeved on the water inlet section; A flow buffering fin is provided at the starting end of the water inlet section.

2. The heat exchanger with integrated buffer tube according to claim 1, characterized in that: The water outlet section is provided with a plurality of water storage branch sections, and the plurality of water storage branch sections are spaced apart and communicated with the water outlet section.

3. The heat exchanger with integrated buffer tube according to claim 1, characterized in that: The length direction of the flow buffering fin is parallel to the water flow direction, and the flow buffering fin is in a spiral shape.

4. The heat exchanger with integrated buffer tube according to claim 1, characterized in that: The flow buffering fin extends to the transition section and the water outlet section.

5. The heat exchanger with integrated buffer tube according to claim 2, characterized in that: The diameter of the water storage branch section is smaller than that of the water outlet section, and the water storage branch section is in a U shape.

6. The heat exchanger with integrated buffer tube according to claim 1, characterized in that: The material of the heat exchange pipe is stainless steel.

7. A water heater, characterized in that: There is a heat exchanger integrated with a buffer pipe according to any one of claims 1 to 6.

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