Double-container water tank and water heater with same

Abstract

The utility model relates to a double-liner water tank, which comprises an inner liner and an outer liner, the inner liner is sleeved and sealed in the outer liner, a closed cavity is formed between the outer wall of the inner liner and the inner wall of the outer liner, the inner liner is provided with a first water inlet pipe and a first water outlet pipe, one end of the first water inlet pipe extends towards the bottom of the inner liner, and the other end of the first water outlet pipe extends towards the bottom of the outer liner. The other end of the first water inlet pipe extends out of the outer container, the first water outlet pipe is located at the top of the inner container and extends out of the outer container, a second water inlet pipe and a second water outlet pipe are arranged on the outer container in a spaced mode, and the second water inlet pipe and the second water outlet pipe are both communicated with the cavity; the double-container water tank is reasonable in structure, water is heated in a heat exchange mode, and compared with an existing heating mode, the double-container water tank is more energy-saving and environment-friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a double-tank water tank and a water heater with the double-tank water tank. Background Art

[0002] Water heaters are necessities in people's lives. At present, when consumers choose water heaters, they will not only pay attention to the heating method of the water heater, but also pay more attention to the heating effect. The inner tank is the key factor that determines the quality of a water heater. At present, most of the water heaters commonly sold on the market are single tank (i.e., only one inner tank) structures, such as the electric water heater inner tank disclosed by Chinese patent CN201053766Y and a water heater inner tank disclosed by Chinese patent CN215523798U. The essence of them is mainly to set a heater or a heating coil in the inner tank, and then heat the water in the inner tank after the heater or the coil is energized, and finally output hot water. However, this heating method often has the problem of low heating efficiency, that is, the waiting time for heating is relatively long, and it usually takes a certain amount of preheating time to heat the water. And when the water is heated and not used for a long time, the water temperature in the inner tank will gradually decrease, which causes excessive waste of energy and poor insulation effect.

[0003] Therefore, it is necessary to improve the existing technology and provide a double-tank water tank for a water heater with good heating effect and better environmental protection and energy saving. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a double-tank water tank with reasonable structure and high heating efficiency and a water heater with the double-tank water tank.

[0005] In order to solve the above technical problems, the technical solution used in the utility model is:

[0006] A double-tank water tank comprises an inner tank and an outer tank, wherein the inner tank is sealed in the outer tank, and a closed cavity is formed between the outer wall of the inner tank and the inner wall of the outer tank, the inner tank is provided with a first water inlet pipe and a first water outlet pipe, one end of the first water inlet pipe extends toward the bottom of the inner tank, the other end of the first water inlet pipe extends out of the outer tank, the first water outlet pipe is located at the top of the inner tank and extends out of the outer tank, and a second water inlet pipe and a second water outlet pipe are arranged on the outer tank at intervals, and the second water inlet pipe and the second water outlet pipe are both connected to the cavity.

[0007] Preferably, a temperature measuring component is also provided on the inner tank, and the temperature measuring component includes a temperature sensing tube and a temperature display. One end of the temperature sensing tube is located in the inner tank, and the other end is connected to the temperature display.

[0008] Preferably, a return pipe is further provided on the inner tank, one end of the return pipe is located in the middle of the inner tank, and the other end extends out of the outer tank, and the return pipe, the first water inlet pipe and the first water outlet pipe are all arranged at intervals.

[0009] Preferably, the inner liner and the outer liner both include an upper head, a lower head and a middle shell, and the upper head, the lower head and the middle shell are welded and formed in one piece.

[0010] Preferably, a first sewage pipe is provided on the inner container, the first sewage pipe is connected to the bottom of the inner container, and one end of the first sewage pipe extends out of the outer container.

[0011] Preferably, a second sewage pipe is provided on the outer container, and the second sewage pipe is communicated with the cavity.

[0012] Preferably, the diameter ratio between the diameter of the inner liner and the diameter of the outer liner is (1-1.5):(1-1.5), and the interval between the inner liner and the outer liner is 5-10 cm.

[0013] Preferably, the double-tank water tank further comprises a connecting seat, the connecting seat ring is fixed on the outer side wall of the bottom of the outer tank, and the bottom of the connecting seat is open, a fixing block is further provided on the connecting seat, and there are multiple fixing blocks, which are spaced apart from each other.

[0014] Preferably, the fixing block is arranged in an "L" shape, one end of the fixing block is connected to the connecting seat, and the other end is arranged to protrude outward relative to the connecting seat, and a through hole is also opened on the fixing block.

[0015] A water heater comprises a double tank of the water heater as described in any one of the above preferred embodiments.

[0016] The beneficial effects of the utility model are mainly reflected in: it is more reasonable in structure, and through the double-tank structural design, the hot water in the outer tank heats the cold water in the inner tank, and the water is heated by this heat exchange method, which is more energy-saving and environmentally friendly than the previous heating method; at the same time, the circulation of hot water can also keep the water in the inner tank warm, the heat is not easily lost, and the heating efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other purposes, features and advantages of the present invention will become more apparent through a more specific description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals in all the accompanying drawings indicate the same parts, and the drawings are not intentionally scaled to the actual size, but the focus is on illustrating the subject matter of the present invention.

[0018] Figure 1 It is a schematic diagram of the cross-sectional structure of the double-tank water tank in the utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the double-tank water tank in the utility model;

[0020] In the figure: inner tank 1, first water inlet pipe 10, first water outlet pipe 11, temperature sensing tube 12, return pipe 13, first sewage pipe 14, outer tank 2, second water inlet pipe 20, second water outlet pipe 21, cavity 22, second sewage pipe 23, floor heating connecting pipe 24, connecting seat 3, fixing block 30. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0022] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element and integrated therewith, or there may be an intermediate element at the same time. The terms "installed", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art. The terms used in the specification herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] refer to Figure 1-2 The utility model provides a double-tank water tank, comprising an inner tank 1 and an outer tank 2, wherein the inner tank 1 is sealed in the outer tank 2, or at least a part of the inner tank 1 is sealed in the outer tank 2; and a closed cavity 22 is formed between the outer wall of the inner tank 1 and the inner wall of the outer tank 2, and the cavity 22 is used to store high-temperature hot water. A first water inlet pipe 10 and a first water outlet pipe 11 are provided on the inner tank 1, and the first water inlet pipe 10 is used to be connected to an external tap water pipeline. One end of the first water inlet pipe 10 extends toward the bottom of the inner tank 1, and the other end of the first water inlet pipe 10 extends out of the outer tank 2. The first water outlet pipe 11 is located at the top of the inner tank 1 and extends out of the outer tank 2. A second water inlet pipe 20 and a second water outlet pipe 21 are provided on the outer tank 2 at intervals, and the second water inlet pipe 20 and the second water outlet pipe 21 are both connected to the cavity 22.

[0025] The double-tank water tank provided by the utility model has the following specific working process:

[0026] refer to Figure 1-2First, hot water is introduced into the outer tank 2, that is, into the cavity 22, and the hot water is circulated in the cavity 22 to ensure that the water in the cavity 22 is always in a high temperature state; then the first water inlet pipe 10 on the inner tank 1 is connected to the tap water pipe, and cold water is injected into the inner tank 1 through the first water inlet pipe 10. Since the hot water in the outer tank 2 and the cold water in the inner tank 1 form a large temperature difference, the cold water in the inner tank 1 absorbs the heat of the hot water in the outer tank 2, and heats the cold water in the inner tank 1 through the hot water in the cavity 22. Finally, the water in the inner tank 1 is heated and discharged through the first water outlet pipe 11, thereby delivering hot water to the water heater. The utility model heats the water in the inner tank 1 by this heat energy exchange method, which is more energy-saving and environmentally friendly than the usual heating method, and the hot water will always circulate in the cavity 22, so the heating efficiency is also higher, and the heat preservation effect is better.

[0027] In other embodiments, the source of hot water in the cavity 22 can be through a connection with a water outlet of a heat pump air-conditioning main unit (not shown). When the heat pump air-conditioning main unit is working, high-temperature hot water will be generated and discharged. This can be achieved by connecting it to the second water inlet pipe 20 of the outer tank 2 to collect this part of the hot water and inject it into the cavity 22. A floor heating pipe 24 can also be provided on the outer tank 2. One end of the floor heating pipe 24 is connected to the cavity 22, and the other end is connected to the water inlet of the floor heating (not shown). At this time, in addition to being used to heat the water in the inner tank 1, the hot water in the cavity 22 can also be used to heat the floor heating through the floor heating pipe 24, and the water outlet of the floor heating (whose water outlet generally discharges cold water) can be connected to the water inlet of the heat pump air-conditioning main unit. This part of the cold water is converted into hot water again under the action of the heat pump air-conditioning main unit and discharged, thereby forming a circulating water flow.

[0028] In a further preferred embodiment, the outer side of the outer liner 2 is also provided with an insulation layer and an outer shell (not shown), and the outer shell, insulation layer, outer liner and inner liner are connected in sequence; the insulation layer mainly plays a role of insulation, and the outer shell can play a protective role.

[0029] refer to Figure 1-2 In a preferred embodiment, a temperature measuring component is also provided on the inner tank 1, and the temperature measuring component includes a temperature sensing tube 12 and a temperature display (not shown). One end of the temperature sensing tube 12 is located in the inner tank 1, and the other end is connected to the temperature display. By providing the temperature measuring component, it is convenient for the user to observe the water temperature in the inner tank 1 more intuitively.

[0030] refer to Figure 1-2In a preferred embodiment, a return pipe 13 is further provided on the inner tank 1, one end of the return pipe 13 is located in the middle of the inner tank 1, and the other end is extended out of the outer tank 2, and the return pipe 13, the first water inlet pipe 10 and the first water outlet pipe 11 are all arranged at intervals. When the water heater is not used, a part of the hot water will remain in the water pipe, and after a certain period of time, this part of the hot water will cool down and become cold water. By setting the return pipe 13, this part of the water remaining in the water pipe can be recycled, so that the hot water can be used quickly when the water heater is used next time, without waiting for a long heating time.

[0031] refer to Figure 1-2 In a preferred embodiment, the inner liner 1 and the outer liner 2 both include an upper head, a lower head and a middle tube, and the upper head, the lower head and the middle tube are welded and formed in one piece. The use of welded and formed in one piece can ensure the sealing of the inner liner 1, and is not easy to be damaged, thereby increasing the service life.

[0032] In a further preferred embodiment, the first water inlet pipe, the first water outlet pipe, the return pipe and the first sewage pipe all include water pipe joints, the upper heads of the inner and outer tanks are connected by the water pipe joints of the first water inlet pipe, the first water outlet pipe and the return pipe, and the lower heads of the inner and outer tanks are connected by the water pipe joints of the first sewage pipe; the water pipe joints not only play a load-bearing role in connecting the inner and outer tanks, but can also be used to connect with an external water pipe to play a connecting role for water inlet and outlet.

[0033] In a further preferred embodiment, the water pipe joint and the upper heads of the inner and outer bladders, as well as the lower heads of the inner and outer bladders can be connected by welding; the specific process is:

[0034] By flanging and punching holes on the inner side of the upper and lower heads of the inner liner, that is, the flanging is located on the inner side of the heads, and the water pipe joint is welded on the inner side of the upper and lower heads of the inner liner, so that one end of the water pipe joint is fixed to the inner liner; the other end of the water pipe joint is respectively welded and fixed to the outer side of the upper and lower heads of the outer liner, thereby realizing the connection and fixation of the inner liner and the outer liner through the water pipe joint. On the one hand, it saves a certain production cost, and on the other hand, it can make the inner liner and the outer liner have a certain load-bearing connection, ensuring its stability.

[0035] refer to Figure 1-2In a preferred embodiment, the inner tank 1 is provided with a first drain pipe 14, which is connected to the bottom of the inner tank 1, and one end of the first drain pipe 14 extends out of the outer tank 2. Further, the first drain pipe includes a water pipe joint, and the lower end cap of the inner tank and the lower end cap of the outer tank are connected through the water pipe joint of the first drain pipe, so as to play a role of bottom load-bearing; and because natural water contains impurities, these impurities will be deposited at the bottom of the inner tank 1 after a period of time. By setting a drain pipe at the bottom, the impurities can be cleaned in time to avoid excessive accumulation of impurities affecting the heat exchange effect.

[0036] refer to Figure 1-2 In a preferred embodiment, a second sewage pipe 23 is provided on the outer liner 2, and the second sewage pipe 23 is connected to the cavity 22. The second sewage pipe 23 has the same function as the first sewage pipe 14, which will not be described here.

[0037] refer to Figure 1-2 In a preferred embodiment, the diameter ratio between the inner liner 1 and the outer liner 2 is (1-1.5): (1-1.5), and the interval between the inner liner 1 and the outer liner 2 is 5-10 cm. The interval between the inner liner 1 and the outer liner 2 is preferably 4-5 cm, which ensures the capacity of the inner liner 1 while also making the heating more uniform and having a better heating effect.

[0038] refer to Figure 1-2 In a preferred embodiment, the double tank water tank further comprises a connection seat 3, which is fixed to the outer side wall of the bottom of the outer tank 2, and the bottom of the connection seat 3 is open, and a fixing block 30 is also arranged on the connection seat 3, and there are multiple fixing blocks 30, which are arranged at intervals. The connection seat 3 and the fixing block 30 can be easily fixed and installed.

[0039] refer to Figure 1-2 In a preferred embodiment, the fixing block 30 is arranged in an "L" shape, one end of the fixing block 30 is connected to the connecting seat 3, and the other end is arranged to protrude outward relative to the connecting seat 3. A through hole is also opened on the fixing block 30.

[0040] A water heater comprises a double tank water tank as described in any one of the above embodiments.

[0041] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A double tank water tank, characterized in that: The invention comprises an inner liner and an outer liner, wherein the inner liner is sealed in the outer liner, and a closed cavity is formed between the outer wall of the inner liner and the inner wall of the outer liner, and a first water inlet pipe and a first water outlet pipe are arranged on the inner liner, one end of the first water inlet pipe extends toward the bottom of the inner liner, and the other end of the first water inlet pipe extends out of the outer liner, and the first water outlet pipe is located at the top of the inner liner and extends out of the outer liner, and a second water inlet pipe and a second water outlet pipe are arranged on the outer liner at intervals, and the second water inlet pipe and the second water outlet pipe are both connected to the cavity.

2. The double tank water tank according to claim 1, characterized in that: The inner tank is also provided with a temperature measuring component, which includes a temperature sensing tube and a temperature display. One end of the temperature sensing tube is located in the inner tank, and the other end is connected to the temperature display.

3. The double tank water tank according to claim 1, characterized in that: The inner tank is also provided with a water return pipe, one end of which is located in the middle of the inner tank and the other end extends out of the outer tank. The water return pipe, the first water inlet pipe and the first water outlet pipe are all arranged at intervals.

4. The double tank water tank according to claim 1, characterized in that: The inner liner and the outer liner both include an upper head, a lower head and a middle tube, and the upper head, the lower head and the middle tube are welded and formed in one piece.

5. The double tank water tank according to claim 1, characterized in that: The inner container is provided with a first sewage pipe, which is connected to the bottom of the inner container and has one end extending out of the outer container.

6. The double tank water tank according to claim 1, characterized in that: The outer container is provided with a second sewage pipe, and the second sewage pipe is communicated with the cavity.

7. The double tank water tank according to claim 1, characterized in that: The diameter ratio between the inner liner and the outer liner is (1-1.5):(1-1.5), and the interval between the inner liner and the outer liner is 5-10 cm.

8. The double tank water tank according to claim 1, characterized in that: The double-tank water tank also includes a connecting seat, which is fixed to the outer side wall of the bottom of the outer tank, and the bottom of the connecting seat is open. A fixing block is also provided on the connecting seat, and there are multiple fixing blocks, which are spaced apart.

9. The double tank water tank according to claim 8, characterized in that: The fixing block is arranged in an "L" shape, one end of the fixing block is connected to the connecting seat, and the other end is arranged to protrude outward relative to the connecting seat, and a through hole is also opened on the fixing block.

10. A water heater, characterized in that: It comprises a double tank water tank as described in any one of claims 1 to 9.

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