Mixing tank and water heater

Abstract

The present invention discloses a water mixing tank and a water heater having the same. The water mixing tank comprises a first tank body and a second tank body. The top of the first tank body is provided with a water inlet, and the bottom of the first tank body is connected with the bottom of the second tank body through a first channel. The second tank body is provided with a drain pipe, and the bottom of the second tank body is provided with a drain port. One end of the drain pipe is provided above the first channel, and the other end of the drain pipe is sealed and connected with the drain port. When in use, the water mixing tank can be arranged on the water outlet pipe of the water heater, and the water heated by the heat exchanger of the water heater flows from the water inlet into the first tank body and the second tank body, and flows out from the drain port after mixing with the water stored in the inner cavity of the first tank body and the second tank body, thereby reducing the fluctuation amplitude of the water outlet temperature of the water heater.

Description

Technical Field

[0001] The invention relates to the field of water heaters, in particular to a water mixing tank and a water heater. Background Art

[0002] The water heater has a temperature rise when it is stopped during use. The reason for the temperature rise is that when the water heater is stopped, the hot water retained in the heat exchanger water pipe will absorb the residual heat of the heat exchanger shell and fins and continue to heat up, causing the water temperature to exceed the set temperature. Especially when the load is large, the water temperature rise is more obvious. When the customer turns it on again in a short period of time, the first thing the water heater discharges is the retained high-temperature hot water, and the outlet water temperature fluctuates greatly, which cannot meet the bathing needs. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a water mixing tank, which can reduce the fluctuation range of the outlet water temperature.

[0004] The present invention also provides a water heater having the water mixing tank.

[0005] A mixing tank according to an embodiment of the first aspect of the present invention comprises a first tank body and a second tank body, the top of the first tank body is provided with a water inlet, the bottom of the first tank body is connected with the bottom of the second tank body through a first channel; a drain pipe is provided in the second tank body, and the bottom of the second tank body is provided with a drain outlet, one end of the drain pipe is provided above the first channel, and the other end of the drain pipe is sealed and connected to the drain outlet.

[0006] The water mixing tank according to the embodiment of the present invention has at least the following technical effects: when in use, the water mixing tank can be set on the water outlet pipe of the water heater, and the water heated by the heat exchanger of the water heater flows from the water inlet into the first tank body and the second tank body, and then mixes with the water stored in the inner cavity of the first tank body and the second tank body and flows out from the drain port, thereby reducing the fluctuation amplitude of the water outlet temperature of the water heater.

[0007] According to some embodiments of the present invention, the drain port is arranged at the bottom of the second tank body, the drain pipe is arranged vertically, the upper end of the drain pipe is arranged at the top of the second tank body, and the lower end of the drain pipe is sealed and connected to the drain port.

[0008] According to some embodiments of the present invention, a water inlet pipe is provided on the water inlet, a water inlet joint is provided on the water inlet pipe, a drainage joint is provided on the drainage outlet, the water inlet joint is provided on the outside of the first tank body, and the drainage joint is provided on the outside of the second tank body.

[0009] According to some embodiments of the present invention, a water inlet pipe is provided on the water inlet, the water inlet pipe is vertically arranged, the lower end of the water inlet pipe is arranged in the first tank body, the lower end of the water inlet pipe is closed, and the side wall of the lower end of the water inlet pipe is evenly arranged with multiple water outlets.

[0010] According to some embodiments of the present invention, the first tank body includes a first cylinder body, and the second tank body includes a second cylinder body, the first cylinder body and the second cylinder body are arranged side by side, a first top cover is provided on the top of the first cylinder body, a second top cover is provided on the top of the second cylinder body, a lower cover plate is provided on the bottom of the first cylinder body, a positioning plate is provided on the upper side of the lower cover plate, and the lower cover plate is arranged parallel to the positioning plate; a first through hole and a second through hole are provided on the positioning plate, the first cylinder body passes through the first through hole, the second cylinder body passes through the second through hole, the first cylinder body is sealedly connected to the first through hole, the second cylinder body is sealedly connected to the second through hole, the edge of the lower cover plate is sealedly connected to the positioning plate, a groove is provided on the lower cover plate, one end of the groove is provided below the first cylinder body, and the other end of the groove is provided below the second cylinder, and the groove is the first channel.

[0011] According to some embodiments of the present invention, the first top cover and the second top cover are integrally formed components, the water inlet is provided on the top cover, and the drain outlet is provided on the lower cover.

[0012] According to some embodiments of the present invention, the first tank body is cylindrical, and the second tank body is cylindrical.

[0013] According to some embodiments of the present invention, a flow area of ​​the first channel is smaller than a flow area of ​​the first tank.

[0014] The water heater according to the second aspect of the present invention comprises a water mixing tank according to the first aspect of the present invention, wherein the water mixing tank is arranged on the water outlet pipe of the water heater.

[0015] The water heater according to the embodiment of the present invention has at least the following technical effects: by arranging the above-mentioned water mixing tank on the water outlet pipe of the water heater, the fluctuation amplitude of the water outlet temperature of the water heater is reduced.

[0016] The invention is used for gas water heaters.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 1 is a schematic diagram of the three-dimensional structure of a water mixing tank according to an embodiment of the present invention;

[0020] Figure 2 This is a structural front view of a water mixing tank according to an embodiment of the present invention;

[0021] Figure 3 yes Figure 1 A schematic diagram of the three-dimensional structure of the positioning plate;

[0022] Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure of the lower cover plate.

[0023] Reference numerals:

[0024] Water inlet joint 110 , water inlet pipe 120 , water outlet 121 , drain joint 210 , drain pipe 220 , second top cover 310 , positioning plate 320 , second cylinder 330 , first cylinder 340 , lower cover plate 350 , first channel 351 . DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the directions or positional relationships indicated, such as up, down, front, back, left, right, etc., are based on the directions or positional relationships shown in the 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the meaning of "several" is one or more, the meaning of "many" is more than two, greater than, less than, exceed, etc. are understood to exclude the number itself, and above, below, within, etc. are understood to include the number itself. If there is a description of the first and the second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference below Figures 1 to 4 A water mixing tank according to an embodiment of the first aspect of the present invention is described.

[0029] According to the first aspect of the embodiment of the present invention, the mixing tank includes a first tank body and a second tank body, the top of the first tank body is provided with a water inlet, and the bottom of the first tank body is connected with the bottom of the second tank body through a first channel 351; a drain pipe 220 is provided in the second tank body, and a drain outlet is provided at the bottom of the second tank body, one end of the drain pipe 220 is provided above the first channel 351, and the other end of the drain pipe 220 is sealed and connected to the drain outlet.

[0030] As Figure 1 and Figure 2 As shown, the first tank body and the second tank body are both cylindrical. When water flows in from the water inlet, it will first mix with the water in the first tank body, and then flow into the second tank body from the first channel 351. This part of the water flows upward while mixing with the original water in the second tank body, and then is discharged from the drain pipe 220. The mixing effect is good.

[0031] When in use, the mixing tank can be set on the water outlet pipe of the water heater. Water heated by the heat exchanger of the water heater flows into the first tank body and the second tank body from the water inlet, mixes with the water stored in the inner cavity of the first tank body and the second tank body, and then flows out from the drain port, thereby reducing the fluctuation range of the water outlet temperature of the water heater.

[0032] In some embodiments of the present invention, the drain port is provided at the bottom of the second tank body, the drain pipe 220 is provided vertically, the upper end of the drain pipe 220 is provided at the top of the second tank body, and the lower end of the drain pipe 220 is sealed and connected to the drain port. In this way, the water flowing out of the first channel 351 needs to flow from the bottom of the second tank body to the top of the second tank body, and then flow out from the drain pipe 220, which effectively utilizes the space in the second tank body, reduces the "dead zone" of the water flow, and further improves the mixing effect; wherein, the drain port can be processed into a flange hole, and the lower end of the drain pipe 220 is welded to the flange hole to achieve the purpose of sealing connection.

[0033] To facilitate installation, in some embodiments of the present invention, a water inlet pipe 120 is provided on the water inlet, a water inlet joint 110 is provided on the water inlet pipe 120, a drain joint 210 is provided on the drain outlet, the water inlet joint 110 is provided on the outside of the first tank body, and the drain joint 210 is provided on the outside of the second tank body.

[0034] In some embodiments of the present invention, a water inlet pipe 120 is provided on the water inlet, the water inlet pipe 120 is arranged vertically, the lower end of the water inlet pipe 120 is arranged in the first tank body, the lower end of the water inlet pipe 120 is closed, and a plurality of water outlets 121 are evenly arranged on the side wall of the lower end of the water inlet pipe 120. In this way, after the water flows in from the water inlet pipe 120, the water will flow into the first tank body evenly and dispersedly from the plurality of water outlets 121, thereby improving the mixing effect.

[0035] In some embodiments of the present invention, the first tank body includes a first cylinder 340, and the second tank body includes a second cylinder 330. The first cylinder 340 and the second cylinder 330 are arranged side by side, a first top cover is provided on the top of the first cylinder 340, a second top cover 310 is provided on the top of the second cylinder 330, a lower cover plate 350 is provided at the bottom of the first cylinder 340, a positioning plate 320 is provided on the upper side of the lower cover plate 350, and the lower cover plate 350 is arranged parallel to the positioning plate 320; a first through hole and a second through hole are provided on the positioning plate 320, the first cylinder 340 passes through the first through hole, the second cylinder 330 passes through the second through hole, the first cylinder 340 is sealedly connected to the first through hole, the second cylinder 330 is sealedly connected to the second through hole, the edge of the lower cover plate 350 is sealedly connected to the positioning plate 320, a groove is provided on the lower cover plate 350, one end of the groove is provided below the first cylinder 340, and the other end of the groove is provided below the second cylinder 330, and the groove is the first channel 351. In this way, the structures of the positioning plate 320 and the lower cover plate 350 are simple, and the positioning plate 320 and the lower cover plate 350 can be formed by sheet metal processing. During production, the first body can be passed through the first through hole and then sealed and welded, the second cylinder 330 can be passed through the second through hole and sealed and welded, and then the upper and lower covers 350 are covered. The edge of the lower cover plate 350 and the edge of the positioning plate 320 can also be sealed and welded; the outer edge of the positioning plate 320 can be provided with a downward flange to surround the lower cover plate 350 to obtain a better sealing effect; the welding device can be welded from the bottom of the mixing tank without extending between the first cylinder 340 and the second cylinder 330, which is convenient for production.

[0036] In some embodiments of the present invention, the first top cover and the second top cover 310 are integrally formed components, the water inlet is provided on the first top cover, and the water outlet is provided on the lower cover plate 350. This structure is simple, and the first top cover and the second top cover 310 can fix the tops of the first cylinder 340 and the second cylinder 330, thereby increasing the structural strength.

[0037] In some embodiments of the present invention, the first tank body is cylindrical, and the second tank body is cylindrical. The two cylindrical tank bodies are placed side by side, so that the water mixing tank is in a flat rectangular parallelepiped shape, which is more suitable for the installation space in the water heater than a single cylindrical shape.

[0038] In some embodiments of the present invention, the flow area of ​​the first channel 351 is smaller than the flow area of ​​the first tank body. In this way, the first channel 351 can play a throttling role, increase the residence time of the water flow in the first tank body, and thus further enhance the mixing effect of the water flow in the first tank body.

[0039] The water heater according to the second embodiment of the present invention comprises a water mixing tank according to the first embodiment of the present invention, and the water mixing tank is arranged on the water outlet pipe of the water heater.

[0040] According to the water heater of the embodiment of the present invention, by arranging the above-mentioned water mixing tank on the water outlet pipe of the water heater, the fluctuation range of the outlet water temperature of the water heater is reduced.

[0041] The preferred embodiments of the present invention are specifically described above, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A water mixing tank, characterized in that: It comprises a first tank body and a second tank body, wherein the top of the first tank body is provided with a water inlet, and the bottom of the first tank body is connected with the bottom of the second tank body through a first channel; a drain pipe is provided in the second tank body, and a drain outlet is provided at the bottom of the second tank body, one end of the drain pipe is provided above the first channel, and the other end of the drain pipe is sealed and connected to the drain outlet; the drain pipe is arranged vertically, the upper end of the drain pipe is arranged at the top of the second tank body, and the lower end of the drain pipe is sealed and connected to the drain outlet; The first tank body includes a first cylinder body, and the second tank body includes a second cylinder body. The first cylinder body and the second cylinder body are arranged side by side, a first top cover is provided on the top of the first cylinder body, a second top cover is provided on the top of the second cylinder body, a lower cover plate is provided on the bottom of the first cylinder body, a positioning plate is provided on the upper side of the lower cover plate, and the lower cover plate is arranged parallel to the positioning plate; a first through hole and a second through hole are provided on the positioning plate, the first cylinder body passes through the first through hole, the second cylinder body passes through the second through hole, the first cylinder body is sealedly connected to the first through hole, the second cylinder body is sealedly connected to the second through hole, the edge of the lower cover plate is sealedly connected to the positioning plate, and a groove is provided on the lower cover plate, one end of the groove is provided below the first cylinder body, and the other end of the groove is provided below the second cylinder, and the groove is the first channel.

2. The water mixing tank according to claim 1, characterized in that: The water inlet is provided with a water inlet pipe, the water inlet pipe is provided with a water inlet joint, the drain outlet is provided with a drain joint, the water inlet joint is provided outside the first tank body, and the drain joint is provided outside the second tank body.

3. The water mixing tank according to claim 1, characterized in that: The water inlet is provided with a water inlet pipe, which is arranged vertically. The lower end of the water inlet pipe is arranged in the first tank body, the lower end of the water inlet pipe is closed, and the side wall of the lower end of the water inlet pipe is evenly provided with multiple water outlets.

4. The water mixing tank according to claim 1, characterized in that: The first top cover and the second top cover are integrally formed components, the water inlet is arranged on the first top cover, and the water outlet is arranged on the lower cover plate.

5. The water mixing tank according to claim 1, characterized in that: The first tank body is cylindrical, and the second tank body is cylindrical.

6. The water mixing tank according to claim 1, characterized in that: The flow area of ​​the first channel is smaller than the flow area of ​​the first tank.

7. A water heater, characterized in that: It comprises the water mixing tank according to any one of claims 1 to 6, wherein the water mixing tank is arranged on the water outlet pipe of the water heater.

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