CN220275394U

CN220275394U - Cold tank of water dispenser and water dispenser

Info

Publication number: CN220275394U
Application number: CN202321692183.9U
Authority: CN
Inventors: 唐斌; 黄仁胜
Original assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Current assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Priority date: 2023-06-29
Filing date: 2023-06-29
Publication date: 2024-01-02
Anticipated expiration: 2033-06-29

Abstract

The utility model relates to the technical field of water treatment, in particular to a cold tank of a water dispenser and the water dispenser, wherein the cold tank of the water dispenser comprises a pipe body and a flow dividing disc, a water storage cavity is formed in the tank body, a hot tank water supplementing pipe communicated with the water storage cavity is further arranged at the bottom of the tank body, and a first locking part is arranged on the hot tank water supplementing pipe; the flow distribution disc is arranged in the tank body and comprises a diaphragm plate and a central tube longitudinally penetrating through the diaphragm plate, and a second locking part is arranged at the bottom of the central tube; the hot tank water supplementing pipe is in locking connection with the central pipe through the first locking part and the second locking part. According to the cold tank assembly, the first locking part and the second locking part which can be locked and connected are arranged, so that the hot tank water supplementing pipe and the central pipe can form a stable connection relationship, and the purposes of less materials, less working procedures and cost are achieved.

Description

Cold tank of water dispenser and water dispenser

Technical Field

The utility model relates to the technical field of water treatment, in particular to a cold tank of a water dispenser and the water dispenser.

Background

In the related art, the central tube of the water distributing disc is tightly matched with the hot tank water supplementing pipe to realize fixation, but as the water distributing disc adopts a food material PP with the density smaller than that of water, the hot tank water supplementing pipe adopts an SUS304 material with the same material as that of the cold tank, the plastic expansion coefficients of the two materials are different, and the water temperature is alternate in the use process, so that after a period of use, the water distributing disc can float, and the water temperature partition water outlet effect can not be achieved.

The existing scheme is that two PP pipes are tightly matched on a cold tank cover to press a water distribution disc, but the scheme is characterized in that two materials are used, and meanwhile, the processing and assembling procedures are added, so that the cost is increased.

Disclosure of Invention

The utility model aims to provide a cold tank of a water dispenser and the water dispenser, so as to solve the problem that a central pipe of a water distribution disc and a hot tank water supplementing pipe are disconnected when in use in the related art.

The first aspect of the present utility model provides a cold tank of a water dispenser, comprising:

the water storage tank comprises a tank body, wherein a water storage cavity is formed in the tank body, a hot tank water supplementing pipe communicated with the water storage cavity is further arranged at the bottom of the tank body, and a first locking part is arranged on the hot tank water supplementing pipe;

the flow distribution disc is arranged in the water storage cavity and comprises a diaphragm plate and a central tube longitudinally penetrating through the diaphragm plate, and a second locking part is arranged at the bottom of the central tube; the hot tank water supplementing pipe is in locking connection with the central pipe through the first locking part and the second locking part.

According to the cold tank of the water dispenser, the first locking part and the second locking part which can be in locking connection are respectively arranged on the hot tank water supplementing pipe and the central pipe which are in fit connection, so that the hot tank water supplementing pipe and the central pipe can form a stable connection relationship without being influenced by buoyancy, expansion coefficient and the like, and the water temperature partition water outlet effect is further ensured. Meanwhile, compared with the improvement mode of adding a pipe structure to press the water distributing disc in the related art, the water dispenser provided by the embodiment of the utility model has the effects of less materials, less working procedures and cost reduction.

In one specific embodiment of the utility model, the first locking part is an inverted buckle, and the second locking part is a shrinkage groove; or the first locking part is a shrinkage groove, and the second locking part is an inverted buckle; the back-off is embedded into the shrinkage groove to be locked and connected.

In one specific embodiment of the utility model, the utility model further comprises a limiting rib, wherein the limiting rib and the back-off are arranged on the same inner wall of the pipe cavity and are suitable for being matched with a pipe orifice end with the shrinkage groove to form a stop.

In one specific embodiment of the utility model, the number of the back-off and the number of the limit ribs are all multiple, the back-off is uniformly distributed along the inner circumference of the lumen, and the limit ribs are uniformly distributed along the inner circumference of the lumen.

In one specific embodiment of the utility model, the limit ribs and the back-off are distributed in a staggered manner along the circumferential direction of the inner wall of the pipe cavity.

In one specific embodiment of the utility model, the pipe orifice end of the pipe provided with the shrinkage groove is arranged in a shrinkage way.

In one embodiment of the present utility model, the shrinkage groove is annular.

In one embodiment of the present utility model, the tank includes:

the water storage cavity is formed in the barrel body, and a hot tank water supplementing pipe penetrating through the bottom of the barrel body is arranged in the barrel body;

the cover body is detachably connected to the barrel body; and a sealing structure is arranged between the cover body and the barrel body.

In one embodiment of the utility model, the diaphragm comprises a first diaphragm and a second diaphragm which is arranged outside the first diaphragm in a surrounding way and has a height difference with the first diaphragm, and the diaphragm further comprises a deflector which is connected between the first diaphragm and the second diaphragm and is suitable for guiding water flow from the first diaphragm to the second diaphragm.

The second aspect of the utility model also provides a water dispenser, which comprises a hot tank and the cold tank; the hot tank is communicated with a hot tank water supplementing pipe at the bottom of the tank body.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of a cold tank of a related art water dispenser;

FIG. 2 is a front view of a cold tank of a water dispenser according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of a cold tank of the water dispenser of FIG. 2;

fig. 4 is an enlarged view of the structure of the portion a in fig. 3;

FIG. 5 is a top view of the water distribution tray;

fig. 6 is an enlarged view of the structure of the portion B in fig. 5.

Reference numerals illustrate:

100-cooling tank;

10-tank body, 11-barrel body, 111-warm water area, 112-cold water area, 12-cover body, 13-hot tank water supplementing pipe, 131-first locking part, 14-cold water outlet pipe and 15-warm water inlet pipe;

20-water distributing disc, 21-diaphragm plates, 211-first diaphragm plates, 212-second diaphragm plates, 213-guide plates, 22-central tubes, 221-second locking parts and 222-limit ribs.

Detailed Description

Exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "below," "upper," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

The cold tank 100 of the water dispenser in the embodiment of the present utility model is described below with reference to the drawings of the specification.

A cold tank 100 of a water dispenser according to an embodiment of the present utility model, as shown in fig. 2 to 6, includes a tank body 10 and a diverter tray.

As shown in fig. 3, a water storage cavity is formed in the tank body 10, and a warm water inlet pipe 15, a cold water outlet pipe 14 and a hot tank water supplementing pipe 13 penetrating through the tank body 10 are arranged on the tank body 10, and a warm water inlet, a warm water outlet and a cold water outlet are respectively formed. The warm water inlet is used for supplementing warm water into the tank body 10, the warm water outlet is used for leading out the warm water in the tank body 10 to the outside, in particular to the hot tank, and the cold water outlet is used for leading out cold water to a user reference end or a water mixing end with different temperatures.

It should be noted that, the warm water, the cold water and the hot water mentioned in the description schemes in the embodiments of the present utility model are merely descriptions of the relative changes of the water temperature introduced for understanding the schemes, and are not limitations on the specific temperature of the water temperature. Here, the warm water refers to raw water flowing into the cold tank 100, and the temperature of the warm water is generally a temperature obtained by naturally placing water in the environment. Cold water refers to water cooled by warm water (the temperature of the cold water is lower than that of the warm water), and hot water refers to water heated by warm water (the temperature of the hot water is higher than that of the warm water). In practical products, each water dispenser can be provided with a temperature mode matched with the water dispenser, for example, in a specific example, warm water refers to water with water temperature of normal temperature, cold water refers to water with water temperature of about 5 ℃, and hot water refers to water with water temperature of 95-100 ℃.

The diverter tray is disposed within the tank 10 and includes a diaphragm 21 and a central tube 22 extending longitudinally through the diaphragm 21, the diaphragm 21 being positioned between the warm water inlet and the cold water outlet. The part of the water storage cavity, which is positioned at one side of the diaphragm plate 21 corresponding to the warm water inlet, forms a warm water cavity, and the part of the water storage cavity, which is positioned at one side of the diaphragm plate 21 corresponding to the cold water outlet, forms a cold water cavity.

As shown in fig. 3, a gap is formed between at least part of the outer peripheral edge of the diaphragm 21 and the inner peripheral wall of the accommodation chamber. The gap allows water on one side of diaphragm 21 to flow to the other side of diaphragm 21. When cold water is discharged from the cold water outlet, the warm water cavity automatically supplements water to the cold water.

The central tube 22 penetrates through one end of the diaphragm plate to be communicated with the warm water cavity, the other end of the central tube is connected with the warm water outlet, and specifically, the central tube 22 is matched and inserted with the warm water supplementing pipe 13 of the hot tank, so that warm water in the warm water cavity can be guided to the warm water supplementing pipe 13 of the hot tank and further led out to the hot tank.

The hot tank water replenishing pipe 13 has a first locking portion 131 at one end in the water storage cavity, and a second locking portion 221 at one end of the central pipe 22 for connecting with the hot tank water replenishing pipe 13. The hot tank water replenishing pipe 13 and the center pipe 22 are locked and connected by the first locking portion 131 and the second locking portion 221. The locking connection here means: when the hot tank water replenishing pipe 13 is in fit connection with the central pipe 22, the first locking part 131 and the second locking part 221 are in a stable mutually restrained state, and the mutually restrained state can enable the hot tank water replenishing pipe 13 and the central pipe 22 to be kept stable and free from interference of other factors when in use, for example, the mutually locked and connected hot tank water replenishing pipe 13 and the central pipe 22 can be free from buoyancy interference in the water storage cavity of the tank body 10 and deformation interference caused by different expansion coefficients of materials.

According to the cold tank 100 of the water dispenser, the first locking part 131 and the second locking part 221 which can be adaptively locked are respectively arranged at the connecting ends of the hot tank water supplementing pipe 13 and the central pipe 22 which are correspondingly inserted, so that the hot tank water supplementing pipe 13 and the central pipe 22 can form stable connection without being influenced by buoyancy, expansion coefficient and the like, and the water temperature partition water outlet effect is further ensured. Meanwhile, the water dispenser of the embodiment of the present utility model has the effects of less materials, less processes and reduced costs, compared to the related art as shown in fig. 1, which is an improved way of pressing the water distribution tray 20 by adding a pipe structure.

In some embodiments, as shown in fig. 4, the first locking portion 131 is an inverted buckle, and the second locking portion 221 is a shrink slot; the back-off is embedded into the shrinkage groove to lock the connection.

Specifically, the end of the hot tank water replenishing pipe 13 can be inserted into the end of the central pipe 22 to realize the fit connection. At this time, the first locking portion 131 is a shrinkage groove provided in the hot-tank water supply pipe 13, specifically, a shrinkage groove formed by shrinkage of the pipe outer circumference of the hot-tank water supply pipe 13 in the axial direction; the second locking portion 221 is a reverse buckle provided on the center tube 22, specifically, a reverse buckle formed by projecting the inner wall of the lumen of the center tube 22 in the axial direction.

When the end of the hot-tank water replenishing pipe 13 is inserted into the end of the central pipe 22, the back-off is correspondingly inserted into the space formed by the shrinkage groove, and once the hot-tank water replenishing pipe is connected in an adapting way, the back-off is abutted against the side wall of the shrinkage groove in the inserting and pulling direction so as to block the relative inserting and pulling of the hot-tank hot water pipe and the central pipe 22.

In this embodiment, through setting up the back-off in order to reduce the diameter of passing through of back-off position department at the lumen inner wall of center tube 22 for after hot pot moisturizing pipe 13 inserts the center tube under the exogenic action and locks with the back-off through the shrink groove and be connected, can't plug because of the diameter is greater than back-off position diameter, and then improves the connection stability of center tube 22 and hot pot moisturizing pipe 13.

In other embodiments, the first locking portion 131 is a shrinkage groove, and the second locking portion 221 is an undercut; the back-off is embedded into the shrinkage groove to lock the connection.

Specifically, the end of the center tube 22 may be inserted into the end of the hot tank header 13 to achieve the fitting. At this time, the first locking portion 131 is a reverse buckle provided on the hot-tank water supply pipe 13, specifically, a reverse buckle formed by projecting the inner wall of the pipe cavity of the hot-tank water supply pipe 13 in the axial direction, and the second locking portion 221 is a shrinkage groove provided on the center pipe 22, specifically, a shrinkage groove formed by shrinking the outer pipe periphery of the center pipe 22 in the axial direction. When the end of the central tube 22 is inserted into the end of the hot-tank water replenishing tube 13, the back-off is correspondingly inserted into the space formed by the shrinkage groove, and once the back-off is connected in an adapting way, the back-off is propped against the side wall of the shrinkage groove in the inserting and pulling direction so as to block the relative inserting and pulling of the hot-tank hot water tube and the central tube 22.

In this embodiment, through setting up the back-off in order to reduce the diameter of passing through of back-off position department at the lumen inner wall of hot jar moisturizing pipe 13 for after center tube 22 inserts the center tube under the exogenic action and locks with the back-off through the shrink groove and be connected, can't plug because of the diameter is greater than back-off department diameter, and then improves the connection stability of center tube 22 and hot jar moisturizing pipe 13.

In some embodiments, the device further comprises a limiting rib 222, wherein the limiting rib 222 and the back-off are arranged on the same inner wall of the lumen and are suitable for being matched with a pipe orifice end with a shrinkage groove to form a stop.

In this embodiment, the limiting rib 222 and the back-off are disposed on the same pipe section, and the limiting rib 222 is a stop structure formed by protruding the inner wall of the pipe cavity in the axial direction, and is disposed on the inner wall of the pipe cavity on the other side of the back-off opposite to the pipe end. The stop rib 222 can be stopped correspondingly with the pipe orifice of the inserted pipe section in the central pipe 22 and the hot tank water replenishing pipe 13 during the adaptive plugging so as to avoid the excessive insertion.

Specifically, as shown in fig. 3-6, in some embodiments, the limiting rib 222 and the back-off are disposed on the central tube 22, and at this time, the limiting rib 222 is located on the inner wall of the lumen of the central tube 22 opposite to the mouth end of the back-off, and is adapted to be stopped corresponding to the port of the insertion end of the hot tank water replenishing tube 13, so as to avoid excessive insertion of the hot tank water replenishing tube 13.

Specifically, in some embodiments, the limiting rib 222 and the back-off are disposed on the hot-tank water compensating pipe 13, and at this time, the limiting rib 222 is located on the inner wall of the pipe cavity of the hot-tank water compensating pipe 13 opposite to the pipe orifice end and is adapted to be blocked corresponding to the port of the insertion end of the central pipe 22, so as to avoid excessive insertion of the central pipe 22.

Preferably, in order to facilitate mold separation, the limiting rib 222 and the back-off are disposed on the central tube 22.

In some embodiments, as shown in fig. 3-6, the number of back-ups and the number of spacing ribs 222 are multiple, the number of back-ups being evenly distributed along the lumen inner circumference, and the number of spacing ribs 222 being evenly distributed along the lumen inner circumference.

Specifically, the number of the back-off buttons may be 2, 3, 4, 6, etc., the number of the limit ribs 222 may be 2, 3, 4, 6, etc., and the number of the back-off buttons and the limit ribs 222 may be the same or different.

In this embodiment, by arranging a plurality of inversions on the inner periphery of the lumen, on one hand, the passing diameter of the inner periphery of the lumen can be further reduced by the cooperation of the inversions, and the diameter difference of the locking positions of the central tube 22 and the hot tank water supplementing tube 13 in the case of locking failure is further improved, so that the influence of the relative expansion of the central tube 22 and the hot tank water supplementing tube 13 on locking connection is reduced; on the other hand, by placing the circumferences of the center pipe 22 and the hot-tank water supply pipe 13 in the multipoint connection state, the difficulty in insertion and extraction in the locked state is further increased, and the connection stability of the center pipe 22 and the hot-tank water supply pipe 13 is further improved.

In some embodiments, the stop ribs 222 are offset from the back-off along the circumference of the lumen inner wall. The die separation difficulty during processing can be reduced through the dislocation arrangement of the limiting ribs 222 and the back-off. In this embodiment, the number of the back-off buttons is the same as the number of the limit ribs 222, and one limit rib 222 is disposed between two adjacent back-off buttons on a projection plane perpendicular to the length direction of the can body 10. Preferably, the number of the back-off and the limit ribs 222 is 3.

In some embodiments, as shown in fig. 4, the back-off is curved on a projection plane perpendicular to the length direction of the can body 10, and the radius angle corresponding to the curved plane is 15-60 °. On the projection plane parallel to the length direction of the tank body 10, the cross section of the back-buckle is arc-shaped, and the arc-shaped can be used as a guide surface to reduce the matching difficulty of the first locking part 131 and the second locking part 221 when the central pipe 22 and the hot tank water supplementing pipe 13 are inserted.

Of course, in other embodiments, the back-off may be hemispherical, or rectangular or other polygonal in cross-section on a plane of projection parallel to the length of the can 10.

In some embodiments, as shown in fig. 4, the stop rib 222 is rectangular on a projection plane perpendicular to the length direction of the can 10 and a projection plane parallel to the length direction of the can 10. Of course, on a projection plane parallel to the length direction of the tank body 10, the cross section of the limiting rib 222 may also be a triangle with the side length adjacent to the pipe orifice end perpendicular to the pipe wall.

In some embodiments, the stop rib 222, the back-off, and the center tube 22 are integrally formed, and the center tube 22 and the diaphragm 21 are integrally formed, i.e., the water distribution tray 20 is an integrally formed structure.

In some embodiments, as shown in FIG. 4, the constrictions are annular in shape and may be achieved by constricting. The shrinkage groove is annular, and then can hold the back-off of optional position on the same circumference, and then reduces the alignment degree of difficulty of center tube 22 and hot jar moisturizing pipe 13, improves installation effectiveness.

Further, as shown in fig. 4, the cross section of the shrinkage groove is arc-shaped on a projection plane parallel to the length direction of the can body 10 so as to be matched with the back-off.

Of course, in other embodiments, the number of the shrinking slots may be the same as that of the back-off, and the positions of the shrinking slots are in one-to-one correspondence with those of the back-off.

In some embodiments, as shown in fig. 4, the hot tank water supply pipe 13 or the central pipe 22 provided with the shrink slot is provided with a shrink mouth, so that the pipe end is aligned with the other pipe section by shrinking the diameter of the pipe end, thereby facilitating the insertion into the other pipe section.

In some embodiments, as shown in fig. 2, the tank body 10 includes a tank body 11 and a cover body 12, a water storage cavity is formed in the tank body 11, and the tank body is provided with a hot tank water supplementing pipe 13 penetrating through the bottom of the tank body; the cover 12 is detachably connected to the tub 11 to facilitate the installation of the diverter tray in the tub 11.

Optionally, a sealing structure is arranged between the cover 12 and the barrel 11. The sealing structure can increase the sealing and connection between the cover 12 and the barrel 11, and effectively place the cover 12 separated from the barrel 11 in the transportation process.

In some embodiments, a warm water inlet tube 15 is provided on the cover 12.

In some embodiments, as shown in fig. 5, the diaphragm 21 includes a first diaphragm 211 and a second diaphragm plate 212 disposed around and having a height difference from the first diaphragm 211, and the diaphragm 21 further includes a deflector 213 connected between the first diaphragm 211 and the second diaphragm plate 212, the deflector 213 being adapted to direct water flow from the first diaphragm 211 to the second diaphragm plate 212. By providing the diaphragm 21 as a first diaphragm 211 and a second diaphragm 212 having a height difference, the water flow in the water storage chamber can be enhanced, and thus the occurrence of a dead water region can be avoided, thereby improving safety.

The water dispenser according to the embodiment of the present utility model includes a cold tank 100 and a hot tank.

The cold tank 100 is the aforementioned cold tank 100 for drinking water, and the specific structure of the cold tank 100 is not described herein.

The hot tank is arranged below the cold tank 100 and is provided with a containing cavity, and the containing cavity of the hot tank is communicated with the hot tank water supplementing pipe 13 at the bottom of the pipe body of the cold tank 100, and is suitable for receiving supplementing water from the warm water area 111 through the hot tank water supplementing pipe 13 and a central pipe 22 connected with the hot tank water supplementing pipe when the water level in the containing cavity drops.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. A cold tank of a water dispenser, comprising:

2. The cold tank of a water dispenser of claim 1, wherein the first locking portion is a back-off and the second locking portion is a sink; or the first locking part is a shrinkage groove, and the second locking part is an inverted buckle; the back-off is embedded into the shrinkage groove to be locked and connected.

3. The cold tank of a water dispenser of claim 2, further comprising a stop rib, wherein the stop rib and the back-off are disposed on the same inner wall of the lumen and adapted to fit a stop with the end of the spout having the channel.

4. The cold tank of a water dispenser of claim 3, wherein the back-off and the limit ribs are all plural, the back-off is uniformly arranged along the inner circumference of the tube cavity, and the limit ribs are uniformly arranged along the inner circumference of the tube cavity.

5. The cold tank of a water dispenser according to claim 4, wherein the limit ribs and the back-off are distributed in a staggered manner along the circumferential direction of the inner wall of the pipe cavity.

6. The cold tank of a water dispenser according to claim 2, wherein the mouth end of the tube provided with the shrink slot is arranged in a shrink mouth.

7. The cold tank of a water dispenser of claim 2, wherein the trough is annular.

8. The cold tank of a water dispenser of claim 1, wherein the tank body comprises:

9. The cold tank of a water dispenser of claim 1, wherein the diaphragm comprises a first diaphragm and a second diaphragm disposed around and having a height differential from the first diaphragm, the diaphragm further comprising a baffle coupled between the first diaphragm and the second diaphragm, the baffle adapted to direct water flow from the first diaphragm to the second diaphragm.

10. A water dispenser, comprising:

a cold tank as claimed in any one of claims 1 to 9;

and the hot tank is communicated with the hot tank water supplementing pipe at the bottom of the tank body.