Heating device of heat storage tank

Abstract

Compared with the prior art, the heating device of the heat storage tank is provided with an inner cylinder, the bottom of the inner cylinder is fixedly connected with the inner bottom wall of the heat storage tank body, and a space for allowing drinking water to circulate is reserved between the top of the inner cylinder and the inner top wall of the heat storage tank body. A space between the outer side wall of the inner cylinder and the inner side wall of the heat storage tank body is set as a relatively cold water area for accommodating relatively cold drinking water, an inner cavity of the inner cylinder is set as a hot water area, and the hot water area is used for accommodating the inner heating pipe and hot water heated by the inner heating pipe; the water outlet hole is communicated with the hot water area so that hot water in the hot water area can be directly output to a user side, an inner water supplementing hole is formed in the side wall of the inner barrel and communicated with the cold water area and the hot water area so as to guide water in the cold water area to flow to the hot water area, and therefore normal-temperature water can be continuously supplemented into an inner cavity of the inner barrel so that continuous heating and continuous hot water output can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of drinking water equipment, in particular to a heating device for a heat storage tank. Background Art

[0002] In drinking water equipment, the heat storage tank is an important part. Normal temperature water can be preheated in the heat storage tank, and the preheated water is transported to the heating body for secondary heating when the water is discharged, so as to quickly obtain hot water that meets drinking needs.

[0003] The prior art discloses a heat storage water dispenser system, which relates to the technical field of water dispensers. The system, with authorization publication number CN215838409U, includes a water inlet, a water outlet, and a heat storage tank disposed between the water inlet and the water outlet. The water inlet has at least one water inlet channel, and the heat storage tank is in communication with at least one water inlet channel. A reversing mechanism is provided between the heat storage tank and the water outlet to connect the water outlet channel and the exhaust channel, such that the heat storage tank is in communication with the water outlet when the water outlet channel is open, or in communication with the exhaust channel when the water outlet channel is closed. The present application utilizes the reversing mechanism to allow hot vapor within the heat storage tank to be discharged through the exhaust channel when the water outlet channel is closed, achieving zero pressure within the heat storage tank. A heating mechanism is generally provided within the heat storage tank to heat (also known as preheat) the water within the heat storage tank.

[0004] However, the existing technology has the following defects: once the amount of water added to the heat storage tank at one time is too much, it often causes the drinking water to be heated for too long, and the user cannot immediately use the hot water. Utility Model Content

[0005] The utility model aims to provide a heating device for a heat storage tank, which significantly reduces the space required for heating so as to output hot water more quickly and facilitate users to immediately take out hot water.

[0006] The purpose of the utility model is achieved as follows: A heating device for a heat storage tank, comprising:

[0007] A heat storage tank body for storing hot water, the heat storage tank body being connected to an external water supply pipe for receiving normal temperature water and a water outlet pipe for outputting hot water, an external water supply hole connected to the external water supply pipe being opened on the side wall of the heat storage tank body, and a water outlet hole connected to the water outlet pipe being opened on the bottom of the heat storage tank body;

[0008] An internal heating pipe inserted into the heat storage tank, connected to the power supply, and used to heat water;

[0009] an inner cylinder, wherein the bottom of the inner cylinder is fixedly connected to the inner bottom wall of the heat storage tank body, a space for accommodating the circulation of drinking water is reserved between the top of the inner cylinder and the inner top wall of the heat storage tank body, the space between the outer wall of the inner cylinder and the inner wall of the heat storage tank body is configured as a colder water zone for accommodating colder drinking water, and the inner cavity of the inner cylinder is configured as a hot water zone, which accommodates the internal heating pipe and the hot water heated by the internal heating pipe;

[0010] The water outlet is connected to the hot water area, and the inner cylinder side wall is provided with an inner water supply hole, which is connected to the colder water area and the hot water area to guide the water in the colder water area to flow to the hot water area.

[0011] The beneficial effects of the present invention are:

[0012] Compared with the existing technology, an inner cylinder is installed in the heat storage tank body, and the inner heating pipe is installed in the inner cavity of the inner cylinder, so that the inner cavity of the inner cylinder becomes a hot water area. Only the water in the inner cavity of the inner cylinder needs to be heated, thereby reducing the space required for heating and allowing the water in the inner cavity of the inner cylinder to heat up more quickly;

[0013] Moreover, the water outlet is located in the hot water area, which can directly output the hot water in the inner cavity of the inner cylinder quickly, making it convenient for users to take hot water immediately;

[0014] The internal water supply hole can continuously guide the room temperature water in the colder water area to the inner cavity of the inner cylinder so as to continuously heat the water, thereby significantly improving the sustainability of hot water output. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural principle diagram of the utility model.

[0016] Figure 2 It is a schematic diagram of the relationship between the preferred inner cylinder and the heat storage tank body. DETAILED DESCRIPTION

[0017] The following is a combination of the appended examples of the present invention Figure 1-2 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0018] like Figure 1 As shown, a heating device for a heat storage tank is proposed, comprising:

[0019] A heat storage tank body 1 for storing hot water is connected to the heat storage tank body 1 with an external water supply pipe 4 for receiving normal temperature water and a water outlet pipe 5 for outputting hot water. Accordingly, the external water supply pipe 4 is provided with a delivery pump and an on-off valve, and the water outlet pipe 5 is also provided with an on-off solenoid valve. The water outlet pipe 5 is connected to a water outlet nozzle. An external water supply hole 1a connected to the external water supply pipe 4 is opened on the side wall of the heat storage tank body 1, and a water outlet hole 1b connected to the water outlet pipe 5 is opened at the bottom of the heat storage tank body 1;

[0020] The liquid level detector 6 is inserted into the heat storage tank body 1 and is used to detect the internal water level of the heat storage tank body 1 (in this embodiment, it mainly detects the water level of the colder water area 1c). If the internal water level of the heat storage tank body 1 is found to be lower than a preset value, water is added to the heat storage tank body 1 through the external water supply pipe 4 and the external water supply hole 1a;

[0021] The inner heating pipe 3 inserted into the heat storage tank body 1, connected to the power supply and used for heating water, is an existing component, which is equivalent to heating quickly and can generate heat when used.

[0022] In order to solve the problems existing in the prior art, the device is provided with an inner cylinder 2, the bottom of the inner cylinder 2 is fixedly connected to the inner bottom wall of the heat storage tank body 1, and a space for accommodating the circulation of drinking water is left between the top of the inner cylinder 2 and the inner top wall of the heat storage tank body 1. The space between the outer wall of the inner cylinder 2 and the inner wall of the heat storage tank body 1 is set as a colder water area 1c for accommodating colder drinking water, and the inner cavity of the inner cylinder 2 is set as a hot water area 2b, which accommodates the inner heating tube 3 and the hot water heated by the inner heating tube 3. The volume of the hot water area 2b is matched with the size of the inner heating tube 3 as much as possible to better perform rapid heating.

[0023] Among them, the water outlet 1b is connected with the hot water area 2b so that the hot water in the hot water area 2b can be directly output to the user end. The side wall of the inner tube 2 is provided with an internal water replenishment hole 2a (which can be one or several). The internal water replenishment hole 2a is connected with the colder water area 1c and the hot water area 2b to guide the water flow from the colder water area 1c to the hot water area 2b, thereby continuously replenishing the inner cavity of the inner tube 2 with normal temperature water for continuous heating and continuous output of hot water.

[0024] like Figure 2 As shown, the heat storage tank body 1 is configured as a circular tank body, the inner cylinder 2 is configured as a metal cylindrical structure, the inner cylinder 2 is coaxially arranged with the heat storage tank body 1, the inner heating tube 3 extends in a spiral shape, and the spiral center line of the inner heating tube 3 coincides with the central axis of the inner cylinder 2, so that the colder water area 1c can become an annular area surrounding the inner cylinder 2.

[0025] In order to facilitate fixing the position of the inner tube 2 , the bottom of the inner tube 2 is welded and fixed to the inner bottom wall of the heat storage tank body 1 .

[0026] As one of the preferred solutions, the inner water replenishment hole 2a is close to the bottom of the inner cylinder 2, which can better replenish water into the inner cavity of the inner cylinder 2 to prevent the inner cylinder 2 from being at a low water level.

[0027] As one of the preferred schemes, the position of the outer water replenishment hole 1a is higher than the inner water replenishment hole 2a, the inner water replenishment hole 2a is on one side of the inner cylinder 2, and the outer water replenishment hole 1a is opposite to the other side of the inner cylinder 2, that is, the inner water replenishment hole 2a and the outer water replenishment hole 1a are staggered in the radial direction. Therefore, in this embodiment, the inner water replenishment hole 2a and the outer water replenishment hole 1a are not only staggered in height position, but also staggered in radial direction, so as to avoid interference between the water flow of the inner water replenishment hole 2a and the water flow of the outer water replenishment hole 1a.

[0028] Compared with the prior art, an inner cylinder 2 is installed in the heat storage tank body 1, and an inner heating tube 3 is installed in the inner cavity of the inner cylinder 2, so that the inner cavity of the inner cylinder 2 becomes the hot water area 2b. Only the water in the inner cavity of the inner cylinder 2 needs to be heated, thereby reducing the space required for heating. The water in the inner cavity of the inner cylinder 2 can be quickly heated without heating all the drinking water in the heat storage tank body 1.

[0029] Furthermore, the water outlet 1b is located in the hot water area 2b, and the hot water in the inner cavity of the inner cylinder 2 can be directly and quickly output, making it convenient for users to immediately use the hot water.

[0030] The inner water replenishment hole 2a can continuously guide the room temperature water in the colder water area 1c to the inner cavity of the inner cylinder 2 so as to continuously heat the water, thereby significantly improving the sustainability of hot water output.

[0031] In addition, during the test of this scheme, it was found that when the heat storage tank body 1 is in a full state, the temperature difference between the hot water in the hot water area 2b and the normal temperature water in the colder water area 1c is large, which is easy to produce convection phenomenon (textbooks define convection phenomenon as the process of circulating between the hotter part and the colder part of the liquid or gas to make the temperature tend to be uniform). As a result, the water temperature in the colder water area 1c is also in an elevated state. Combined with the water flow generated from the outside to the inside at the inner water filling hole 2a, it is easy to generate an internal circulating water flow flowing through the inner water filling hole 2a (such as Figure 1 (shown by the dotted circle in the middle).

[0032] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "front", "back", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention; in the present invention, it should also be noted that the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integrally formed connection, a mechanical connection, or an indirect connection through an intermediate connecting component, and the specific meaning of the terms in this utility model can be understood based on the specific circumstances.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description. It is intended that all variations within the meaning and range of equivalents of the claims be encompassed within the present invention, and any reference numerals in the claims should not be construed as limiting the claims to which they relate.

[0034] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A heating device for a heat storage tank, comprising: A heat storage tank (1) for storing hot water, the heat storage tank (1) being connected to an external water supply pipe (4) for receiving normal temperature water and a water outlet pipe (5) for outputting hot water, an external water supply hole (1a) being connected to the external water supply pipe (4) being provided on a side wall of the heat storage tank (1), and a water outlet hole (1b) being connected to the water outlet pipe (5) being provided on a bottom of the heat storage tank (1); An internal heating pipe (3) inserted into the heat storage tank body (1), connected to a power source, and used for heating water; It is characterized by further comprising: An inner cylinder (2), wherein the bottom of the inner cylinder (2) is fixedly connected to the inner bottom wall of the heat storage tank body (1), a space for accommodating the circulation of drinking water is reserved between the top of the inner cylinder (2) and the inner top wall of the heat storage tank body (1), the space between the outer side wall of the inner cylinder (2) and the inner side wall of the heat storage tank body (1) is set as a colder water area (1c) for accommodating colder drinking water, and the inner cavity of the inner cylinder (2) is set as a hot water area (2b), and the hot water area (2b) accommodates the inner heating pipe (3) and the hot water heated by the inner heating pipe (3); The water outlet hole (1b) is connected to the hot water area (2b), and an inner water supply hole (2a) is provided on the side wall of the inner cylinder (2). The inner water supply hole (2a) is connected to the colder water area (1c) and the hot water area (2b) to guide the water in the colder water area (1c) to flow to the hot water area (2b).

2. The heating device for a heat storage tank according to claim 1, characterized in that: The inner water replenishment hole (2a) is close to the bottom of the inner cylinder (2).

3. The heating device for a heat storage tank according to claim 2, characterized in that: The position of the outer water supply hole (1a) is higher than the inner water supply hole (2a).

4. The heating device for a heat storage tank according to claim 3, characterized in that: The inner water supply hole (2a) is located on one side of the inner cylinder (2), and the outer water supply hole (1a) faces the other side of the inner cylinder (2).

5. The heating device for a heat storage tank according to claim 1, characterized in that: The heat storage tank body (1) is configured as a round tank body, and the inner cylinder (2) is configured as a metal cylindrical structure.

6. The heating device for a heat storage tank according to claim 5, characterized in that: The inner heating tube (3) extends in a spiral shape, and the spiral center line of the inner heating tube (3) coincides with the central axis of the inner cylinder (2).

7. The heating device for a heat storage tank according to claim 5, characterized in that: The bottom of the inner cylinder (2) is welded and fixed to the inner bottom wall of the heat storage tank body (1).

8. The heating device for a heat storage tank according to claim 6, characterized in that: The inner cylinder (2) is coaxially arranged with the heat storage tank body (1).

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