CN220149262U - Water purifier - Google Patents

Abstract

The embodiment of the utility model provides a water purifier. The water purifier comprises a water tank, a hot tank, a first pre-filter element and a central filter element, wherein the water tank, the first pre-filter element and the central filter element are positioned on different layers arranged along the vertical direction, the hot tank and the first pre-filter element are positioned on the same layer, the first pre-filter element and the hot tank are sequentially arranged along the preset horizontal direction, and the axes of the first pre-filter element and the central filter element are parallel to the preset horizontal direction. By adopting the layout provided by the utility model, the space utilization rate in the water purifier with the water tank and the hot tank can be improved.

Description

Water purifier

Technical Field

The utility model relates to the technical field of water purification, in particular to a water purifier.

Background

With the increasing demands of people on life quality, water purifiers have become essential living goods.

The small-flux water purifier is slow in water production rate, and thus is generally equipped with a pure water tank for storing pure water. The water can be quickly taken from the water tank when a user takes water, so that waiting of process time is avoided. In addition, in order to meet the demands of users for different water temperatures, the existing part of water purifiers are also provided with a heating tank for heating.

Simultaneously, the pure water tank and the hot tank occupy a larger space in the water purifier. The water purifier put into the market is not compact in machine layout, so that the water purifier is large in product size. Still other purifiers sacrifice the volume of the water tank or hot tank, resulting in performance of the purifier being compromised.

Disclosure of Invention

To at least partially solve the problems existing in the prior art, an embodiment of the present utility model provides a water purifier including a water tank, a heat tank, a first pre-filter and a central filter, the water tank, the first pre-filter and the central filter being located on different layers arranged in a vertical direction, the heat tank and the first pre-filter being located on the same layer, and the first pre-filter and the heat tank being sequentially arranged in a predetermined horizontal direction, an axis of each of the first pre-filter and the central filter being parallel to the predetermined horizontal direction.

Through setting up first leading filter core and hot jar on the same layer to make both arrange in proper order along the axial direction of first leading filter core and central filter core, can make full use of the space in the purifier, thereby make the volume of this purifier more small and exquisite. Under the condition that the components are arranged in the way, the water purifier can be in a relatively regular cuboid structure as a whole. Whether the water purifier is placed under a kitchen or on a table top, the water purifier occupies only a small area in the table top and the cabinet, and the user experience is good.

The radial dimension of the central cartridge is illustratively smaller than the radial dimension of the first pre-cartridge along a horizontal direction perpendicular to the axis of the central cartridge, which is located on one side of the axis of the first pre-cartridge to form an installation space at the side of the central cartridge.

By locating the axis of the central cartridge on one side of the axis of the first pre-cartridge, a larger installation space can be created on the side of the central cartridge. Therefore, other parts in the water purifier can be more conveniently installed in the installation space, so that the space utilization rate is improved.

The installation space is internally provided with a first pumping device, a first waterway is communicated between the water outlet of the water tank and the purified water outlet of the water purifier, and the hot tank and the first pumping device are sequentially arranged on the first waterway along the water flow direction.

The first pumping means may pump hot water in the hot tank and supply pressure to the hot water in the first pipe, whereby the height of the outlet tap and the hot tank may be unrestricted.

Illustratively, the flow rate of the first pumping device is adjustable.

The flow of the hot water at the purified water outlet is regulated by the first pumping device, so that the temperature of the hot water flowing out of the self-heating faucet can be changed to adapt to different requirements of users.

The installation space is internally provided with a second pumping device, a second waterway is also communicated between the water outlet of the water tank and the purified water outlet, and the second pumping device is arranged on the second waterway.

The water may be directly supplied through the second waterway from the water tank when the user needs the water, and the water may be simultaneously supplied by the first waterway and the second waterway to form the mixed water when the user needs the water having a temperature between the water temperature of the water and a predetermined temperature at which the hot tank can heat. By varying the water flow rates provided by the first waterway and the second waterway, the water temperature of the mixed water may be adjusted. Therefore, the water temperature range which is preferable for the user is larger, and different requirements of the user can be met.

Illustratively, the second water circuit is further provided with a water outlet solenoid valve downstream of the second pumping device, the water outlet solenoid valve being disposed in the installation space. The water purifier further comprises a first pumping device, a first waterway is communicated between the water outlet of the water tank and the purified water outlet of the water purifier, and the heat tank and the first pumping device are sequentially arranged on the first waterway along the water flow direction. The water purifier further comprises a third waterway, the water inlet end of the third waterway is communicated to the second waterway between the second pumping device and the water outlet electromagnetic valve, the water outlet end of the third waterway is communicated to the first waterway at the downstream of the first pumping device, and a one-way flow limiting valve is arranged on the third waterway.

When the expected water taking temperature of the user is between the low-temperature water and the preset temperature heated by the hot tank, the water outlet electromagnetic valve can be closed, so that the normal-temperature water enters the first water path through the third water path and is mixed with the hot water output by the first pumping device. The one-way restrictor valve is used for restricting water flow through the third waterway. Under the condition that the normal-temperature water flow limited by the one-way flow limiting valve is known, the hot water flow can be changed by adjusting the power of the first pumping device, so that the hot water with the desired water taking temperature can be obtained by mixing. The unidirectional flow limiting valve can limit the flow, so that hot water in the first waterway can not reversely enter the second waterway and the water tank through the unidirectional flow limiting valve.

Illustratively, the second pumping device is a flow-adjustable brushless pump.

And a brushless pump capable of working in different gears is adopted to roughly adjust the flow. When the gear is higher, the normal-temperature water purifying pressure and flow output by the brushless pump are increased, and the output flow of the follow-up one-way flow limiting valve is also increased, so that water with lower temperature can be output.

Illustratively, a booster pump is disposed within the installation space, the booster pump being serially connected between the first pre-filter element and the central filter element.

When the central filter core adopts a reverse osmosis filter core or a nanofiltration filter core, the water after pressurization enters the central filter core to work, and the booster pump provides proper pressure for the central filter core.

The water purifier may further include a waterway plate perpendicular to the predetermined horizontal direction and located at a rear of the central cartridge and the installation space, the central cartridge being detachably connected to the waterway plate.

The waterway plate is arranged behind the central filter element and the installation space, so that the space at the central filter element can be fully utilized, and the central filter element can be detachably designed, so that the user or maintenance personnel can conveniently replace the central filter element.

Illustratively, the hot tank and the first pre-filter cartridge are positioned below the water tank.

Therefore, normal-temperature purified water flowing out of the water outlet of the water tank can naturally flow into the hot tank without an additional supercharging device.

Illustratively, a water inlet electromagnetic valve and/or a gravity one-way valve which can be conducted unidirectionally along the gravity direction is connected between the water outlet of the water tank and the water inlet of the hot tank.

If the water inlet electromagnetic valve is adopted, when water is lack in the hot tank, the water inlet electromagnetic valve can be opened to supplement water from the water tank to the hot tank. When the hot tank is full of water, the water inlet electromagnetic valve can be closed to stop water supply to the hot tank. The water replenishing of the hot tank is completed by controlling the water inlet electromagnetic valve, and the water replenishing can be selectively performed during the period that a user stops taking water, so that normal-temperature purified water in the water tank can be prevented from flowing into the hot tank during the period that the user takes water, and the temperature of hot water output by the hot tank is reduced. Meanwhile, when the water inlet electromagnetic valve is closed, hot water in the hot tank can be prevented from entering the water tank in a heat convection mode, a heat exchange mode and the like, so that the temperature of normal-temperature purified water rises, and inaccurate output temperature and energy waste are caused.

If the gravity check valve is adopted, water can be automatically and timely supplemented into the hot tank, and hot water is prevented from flowing into the water tank.

The axial dimension of the central cartridge is illustratively greater than the axial dimension of the first pre-cartridge.

Because the first pre-filter element and the hot tank are positioned on the same layer, the length (i.e. the axial dimension) of the first pre-filter element can be properly shortened, and the central filter element can have a larger length, so that the space in the water purifier can be fully utilized to arrange the central filter element with enough flux.

Illustratively, the central filter element is a reverse osmosis filter element.

The pore size of the reverse osmosis filter element is five parts per million (0.0001 microns) of the hair, and bacteria and viruses are 5000 times of the hair, which cannot be seen by naked eyes. Therefore, only water molecules and part of mineral ions beneficial to human bodies can pass through, other impurities and heavy metals are discharged from the waste water pipe, and high-quality purified water is provided for users.

Illustratively, the first pre-filter element and the central filter element are sequentially connected in series between a raw water inlet of the water purifier and a water inlet of the water tank.

Illustratively, the first pre-filter cartridge is located on the front side of the hot tank.

Thus, the first pre-filter element can be replaced more conveniently.

Illustratively, the space for receiving the hot tank of the water purifier and the space for receiving the first pre-filter cartridge together form an elongated filter cartridge receiving chamber for receiving a second pre-filter cartridge having an axial length greater than the axial length of the first pre-filter cartridge.

Therefore, the framework of the water purifier can be applied to the condition that the heat tank is needed and the front filter element is short, and can also be applied to the condition that the heat tank is not needed and the front filter element is long. Therefore, the number of production platforms can be reduced, and the processing cost can be reduced. When the second preposed filter element with longer length is needed to be installed, the hot pot is not needed to be installed, and the second preposed filter element is only needed to be further inserted into the space which originally accommodates the hot pot.

In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

Advantages and features of the utility model are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings are included to provide an understanding of the utility model and are incorporated in and constitute a part of this specification. Embodiments of the present utility model and their description are shown in the drawings to explain the principles of the utility model. In the drawings of which there are shown,

fig. 1 is a perspective view of a water purifier according to an exemplary embodiment of the present utility model;

fig. 2 is a front view of the water purifier shown in fig. 1 with a decorative panel removed;

fig. 3 is an exploded view of the water purifier shown in fig. 1;

fig. 4 is a perspective view of the water purifier shown in fig. 1 with a housing removed;

fig. 5 is a perspective view of a water tank of a water purifier according to an exemplary embodiment of the present utility model;

fig. 6 is a perspective view of a heat tank of a water purifier according to an exemplary embodiment of the present utility model;

fig. 7A and 7B are front and rear views, respectively, of a waterway plate of a water purifier according to an exemplary embodiment of the present utility model;

fig. 8 is a waterway diagram of a water purifier according to an exemplary embodiment of the present utility model; and

fig. 9 is a waterway diagram of a water purifier according to another exemplary embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

100. a water purifier; 101. a raw water inlet; 102. a purified water outlet; 110. a decorative plate; 130. a housing; 140. a front cover; 141. a first opening; 142. a second opening; 150. a rear cover; 210. a first pre-cartridge; 220. a central filter element; 230. a booster pump; 310. a water tank; 311. a water inlet of the water tank; 312. a water outlet of the water tank; 320. a hot pot; 321. a water inlet of the hot tank; 322. a water outlet of the hot tank; 330. a bracket; 340. an installation space; 410. a first waterway; 420. a second waterway; 430. a third waterway; 500. heating the tap; 610. a first pumping means; 620. a second pumping means; 630. a water outlet electromagnetic valve; 640. a one-way restrictor valve; 650. a gravity check valve; 660. a water inlet electromagnetic valve; 700. a waterway plate; 710. a central cartridge mount; 720. a concentrate valve; 730. a water inlet valve; 741. a water inlet of the waterway plate; 742. a pure water outlet; 743. a concentrated water outlet of the waterway plate; 744. a booster pump water inlet joint; 745. a water outlet joint of the booster pump; 750. and a fixing hole.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the utility model. However, it will be understood by those skilled in the art that the following description illustrates preferred embodiments of the utility model by way of example only and that the utility model may be practiced without one or more of these details. Furthermore, some technical features that are known in the art have not been described in detail in order to avoid obscuring the utility model.

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the present utility model. It will be apparent that embodiments of the utility model may be practiced without limitation to the specific details that are set forth by those skilled in the art. Preferred embodiments of the present utility model are described in detail below, however, the present utility model may have other embodiments in addition to these detailed descriptions.

The embodiment of the utility model provides a water purifier. The water purifier can be a desk type water purifier or a kitchen water purifier and the like. Hereinafter, a water purifier according to an embodiment of the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the water purifier 100 has a raw water inlet 101 and a purified water outlet 102. The raw water inlet 101 and the purified water outlet 102 may be provided at the top of the water purifier 100. In other embodiments, not shown, the raw water inlet 101 and the purified water outlet 102 may be located at a lower portion of the water purifier 100. Or both may be possible one above the other. In general, the raw water inlet 101 and the purified water outlet 102 are provided at the rear of the water purifier 100, and the present utility model does not exclude the case where the raw water inlet 101 and the purified water outlet 102 are provided at other positions. As shown in fig. 3, the water purifier 100 may include a water tank 310, a hot tank 320, a first pre-cartridge 210, and a central cartridge 220. The first pre-cartridge 210 may include, but is not limited to, an activated carbon cartridge, a PP cartridge, a scale inhibiting cartridge, or a composite cartridge of any two or more of them. The central cartridge 220 may include, but is not limited to, a reverse osmosis cartridge, an ultrafiltration cartridge, a nanofiltration cartridge, or a composite cartridge formed by the compositing of any two or more of them. The water outlet of the first pre-cartridge 210 may be connected to the water inlet of the central cartridge 220. Raw water entering the water purifier 100 from the raw water inlet 101 is filtered through the first pre-cartridge 210 and the central cartridge 220 in this order. In one embodiment, the water outlet of the central cartridge 220 may be connected to the water inlet 311 of the water tank 310. The water tank 310 is used to store filtered clean water. The purified water may be prepared in advance during standby of the water purifier 100 and provided to the user when the user takes the purified water from the purified water outlet 102. Typically, the purifier 100 may be a low-flux purifier. Typically, a water purifier with a daily water yield of less than 400 gallons is considered a low flux water purifier. The water outlet 312 of the water tank 310 may be connected to the water inlet of the hot tank 320, and the hot tank 320 may obtain purified water from the water tank 310. The hot tank 320 generally has water storage and heating functions. The hot tank 320 may heat water stored therein. The user may take hot water directly from the hot tank 320. In another embodiment, the water outlet of the central cartridge 220 may be connected to the water inlet 321 of the hot tank 320. The water outlet 322 of the hot tank 320 may be connected to the water inlet 311 of the water tank 310. The filtered clean water may first flow into the hot tank 320, be heated by the hot tank 320, and then be transferred to the water tank 310 for storage. In this case, the user can directly obtain hot water from the water tank 310. Alternatively, to ensure that the water temperature in the water tank 310 is not too much below the hot tank 320, a return water path may be added between the water tank 310 and the hot tank 320 so that the water in the water tank 310 may be returned to the hot tank 320 to be heated again. Of course, the return water path may not be provided according to the user's needs. In short, the present utility model can be applied to any water purifier 100 having both the water tank 310 and the heat tank 320, so as to improve the space utilization rate in the water purifier 100.

The water tank 310, the first pre-cartridge 210, and the central cartridge 220 may be located on different layers arranged in a vertical direction. The arrangement order of the water tank 310, the first pre-cartridge 210, and the central cartridge 220 in the vertical direction may be arbitrary. Alternatively, the water tank 310, the first pre-cartridge 210, and the central cartridge 220 may be sequentially or inversely arranged in a top-down direction. Optionally, the central cartridge 220 may also be disposed between the water tank 310 and the first pre-cartridge 210. The three can be arranged in the vertical direction according to the needs. The hot tank 320 may be located on the same layer as the first pre-cartridge 210. In the illustrated embodiment, the water tank 310 may be located at the uppermost layer of the water purifier 100, and the first pre-cartridge 210 and the thermal tank 320 are located at the lowermost layer. The central cartridge 220 is mounted below the water tank 310 and above the hot tank 320 and the first pre-cartridge 210.

The fact that the heat tank 320 is located at the same level as the first pre-cartridge 210 generally means that the two overlap as much as possible in the height direction, thereby avoiding that they occupy a large space within the water purifier 100 in the height direction. To facilitate an understanding of the same layer concepts described above, in particular, for the same layer devices, there may typically be two cases including: 1. the hot tank 320 is the same level as the devices of the same layer of the first pre-cartridge 210; 2. the hot tank 320 is at a different device height than the same layer of the first pre-cartridge 210. In some embodiments, taking the hot tank and the first pre-filter element as examples, the hot tank and the first pre-filter element are located on the same layer, and the heights of the two may be the same. At this time, the bottom ends and the top ends of the two layers are respectively positioned at the same horizontal position and are arranged on the same horizontal plane, and the space in the height direction occupied at this time is the smallest, and the height of the two layers is consistent. When the heights may also be different, the one with the smaller height may be located entirely within the height range occupied by the one with the larger height in the height direction. Taking the example that the height of the heat tank 320 is greater than that of the first pre-filter 210, at this time, the layer of height is consistent with the height of the higher heat tank 320, the bottom of the first pre-filter 210 may be installed tangentially to the horizontal plane where the bottom surface of the heat tank 320 is located at the same horizontal position, or the top of the first pre-filter 210 may be installed tangentially to the horizontal plane where the top surface of the heat tank 320 is located at the same horizontal position, or the top of the first pre-filter 210 may be lower than the top of the heat tank 320, and the bottom of the first pre-filter 210 may be installed in suspension at a certain distance from the horizontal plane where the top surface of the heat tank is located and the horizontal plane where the bottom surface of the heat tank is located, so as to fix the first pre-filter 210 with the bracket 330. In this case, the space occupied by the heat tank 320 and the first pre-cartridge 210 in the water purifier 100 in the height direction is determined by the higher one. Of course, the present utility model does not exclude the arrangement in which the heat canister 320 is offset from the first pre-cartridge 210 by a little in the height direction, i.e., a first one of the heat canister 320 and the first pre-cartridge 210 (referring to one of the heat canister 320 and the first pre-cartridge 210) has a lower portion than a second one (referring to the other one of the heat canister 320 and the first pre-cartridge 210) and the second one has a higher portion than the first one, but both still have overlapping portions in the height direction. This applies to a water purifier having just a certain space to accommodate the second raised portion and the first lowered portion. But the space occupied by the raised and lowered portions is typically not significant. One skilled in the art can choose how to arrange the hot tank 320 and the first pre-cartridge 210 in the height direction as desired. The above cases are all examples of the same layer, but the range defined by the plane of the upper and lower surfaces of the device with higher height is not generally exceeded under the condition that the current installation space of the device with lower height is enough.

Typically, the water storage capacity of the hot tank 320 may be less than the water storage capacity of the water tank 310. The volume of the hot tank 320 may be smaller than the volume of the water tank 310. The heat tank 320 may be located at the same layer as the first pre-cartridge 210 as shown in fig. 3-4, and the first pre-cartridge 210 and the heat tank 320 may be sequentially disposed in a predetermined horizontal direction. The axes of the first pre-cartridge 210 and the central cartridge 220 are both parallel to the predetermined horizontal direction. Illustratively, the predetermined horizontal direction may be a length direction of the water purifier 100, i.e., an X-X direction in fig. 1. Of course, embodiments in which the volume of the heat removal tank 320 is greater than or equal to the volume of the water tank 310 are not excluded by the present utility model. Although the hot tank 320 shares a layer with the first pre-cartridge 210, the hot tank 320 may be made to have a volume comparable to the water tank 310 or greater than the water tank 310 by adjusting the height of the hot tank 320 and/or adjusting the ratio of the length of the hot tank 320 to the length of the first pre-cartridge 210. It is understood that the width and height of the hot tank 320 may be not significantly different from the diameter of the first pre-cartridge 210 to fully utilize the space within the water purifier 100.

By disposing the first pre-cartridge 210 and the heat tank 320 on the same layer and sequentially arranging them along the axial direction of the first pre-cartridge 210 and the central cartridge 220, the space in the water purifier 100 can be fully utilized, thereby making the volume of the water purifier 100 smaller. In the case where the above-described components are arranged in this manner, the water purifier 100 may have a relatively regular rectangular parallelepiped structure as a whole. Whether the purifier 100 is placed under a kitchen or on a counter, it occupies only a small area within the counter and cabinet, and the user experience is good.

Illustratively, the first pre-cartridge 210 may be positioned relatively forward of the interior of the purifier 100 and the thermal tank 320 may be positioned relatively rearward of the interior of the purifier 100, both at about the same elevation. The term "front" refers to the side closer to the user in use. In the illustrated embodiment, the water purifier 100 may include a housing 130, a front cover 140, and a rear cover 150. The housing 130 may have a cylindrical shape that is opened front and rear, surrounds the inner components of the water purifier 100 from the side, and the front cover 140 and the rear cover 150 may cover the front and rear sides of the housing 130 to surround the inner components of the water purifier 100. The front cover 140 may be provided with a first opening 141 and a second opening 142, see fig. 2 (the decorative plate 110 is removed). The first pre-cartridge 210 and the central cartridge 220 may be mounted to the inside of the water purifier 100 via the first opening 141 and the second opening 142, respectively. The first pre-cartridge 210 may be more conveniently replaced by having the first pre-cartridge 210 closer to the second opening 142 than the hot tank 320. The front surface of the water purifier 100 may be covered with a decorative plate 110, see fig. 1. The decorative panel 110 may cover the first opening 141 and/or the second opening 142.

As shown in fig. 3-4, the water tank 310, the first pre-cartridge 210, the central cartridge 220, and the hot tank 320 may be illustratively mounted in grooves and/or cavities reserved on the bracket 330. The bracket 330 also serves to fix the housing 130, the front cover 140, and the rear cover 150.

Illustratively, the radial dimension of the central cartridge 220 may be smaller than the radial dimension of the first pre-cartridge 210, which allows for the creation of an installation space 340 on the side of the central cartridge 220 if both are arranged one above the other. For example, the axial dimension of the central cartridge 220 described above may be greater than the axial dimension of the first pre-cartridge 210. Thereby, the internal space of the water purifier 100 can be fully utilized. Moreover, the first pre-cartridge 210 is thick and short, while the central cartridge 220 is thin and long, thereby enabling the two to have a matched flux. The sum of the lengths of the heat tank 320 and the first pre-cartridge 310 may be just close to the sum of the lengths of the central cartridge 220 and the rear waterway plate 700, so that the internal layout of the water purifier is more coordinated and reasonable. If the axis of the central cartridge 220 is aligned with the axis of the first pre-cartridge 210 in a vertical direction, a small space is formed on both sides of the first pre-cartridge 210, and it is difficult to install other required components. If the axis of the central cartridge 220 is located at one side of the axis of the first pre-cartridge 210 in a horizontal direction perpendicular to the axis of the central cartridge, a larger installation space 340 can be formed at the side of the central cartridge 220. Thus, other components in the water purifier 100 may be more conveniently installed in the installation space 340, thereby improving space utilization.

The first pumping device 610 may be disposed in the installation space 340, and a first waterway 410 may be connected between the water outlet 312 of the water tank 310 and the purified water outlet 102 of the water purifier 100, as shown in fig. 8, and the heat tank 320 and the first pumping device 610 may be sequentially disposed on the first waterway 410 in a water flow direction. By providing the first pumping means 610, the hot water in the hot tank 320 can be pumped to the clean water outlet 102, or even to a water outlet tap to which the clean water outlet 102 is connected. Thus, the height of the tap and the hot pot 320 may be unrestricted. Illustratively, the flow rate of the first pumping device 610 is adjustable. For example, the first pumping device 610 may be a flow control pump with an adjustable flow rate. The flow rate of the hot water supplied to the purified water outlet 102 may be adjusted while the first pumping means 610 draws the hot water in the hot tank 320. Typically, the hot tank 320 is only capable of heating the water therein to a predetermined temperature. If the user requires higher temperature water, a heating tap 500 may optionally be connected to the clean water outlet 102. The water in the hot tank 320 may be heated again by the heating tap 500 while flowing through the heating tap 500 to reach a desired water intake temperature of a user. By adjusting the flow of hot water from the purified water outlet 102 by the first pumping means 610, the temperature of the hot water flowing out of the heating faucet 500 can be changed to accommodate different demands of users.

Fig. 8 shows a water path diagram of a water purifier adopting the above arrangement. As shown in fig. 8, a first waterway 410 may be communicated between the water outlet 312 of the water tank 310 and the purified water outlet 102. The hot tank 320 and the first pumping device 610 are both disposed on the first waterway 410. The hot water may be provided from the hot tank 320 when the user needs the hot water, and thus the first waterway 410 may be referred to as a hot water waterway. Optionally, a second waterway 420 is also in communication between the water outlet 312 of the water tank 310 and the purified water outlet 102. In this case, the water may be directly supplied from the water tank 310 via the second waterway 420 when the user needs the water of normal temperature, and thus the second waterway 420 may be referred to as a normal temperature water waterway. In the case where the first waterway 410 is present, the first waterway 410 and the second waterway 420 are connected in parallel. When the water temperature required by the user is between the low temperature water and a predetermined temperature at which the hot tank 320 can heat, water may be simultaneously supplied by the first waterway 410 and the second waterway 420 to form mixed water. By varying the flow rate of water provided by the first waterway 410 and the second waterway 420, the temperature of the mixed water may be adjusted. Illustratively, a second pumping device 620 may also be disposed within the installation space 340. As shown in fig. 8, a second pumping device 620 may be disposed on the second waterway 420. As described above, the normal temperature purified water outputted from the water tank 310 also needs to be pressurized, so the second pumping means 620 is on the second waterway 420. The second pumping means 620 is also located in the installation space 340 at the side of the central cartridge 220, thereby improving the utilization of the installation space 340.

In some embodiments, a water outlet solenoid valve 630 downstream of the second pumping device 620 may also be provided on the second waterway 420. The water outlet solenoid valve 630 may be disposed in the installation space 340. The water purifier 100 further includes a third waterway 430. The third waterway 430 may be connected between the first waterway 410 and the second waterway 420. Specifically, the water inlet end of the third waterway 430 is communicated to the second waterway 420 between the second pumping device 620 and the water outlet solenoid valve 630. The water outlet end of the third waterway 430 is connected to the first waterway 410 downstream of the first pumping device 610. The third waterway 430 may be provided with a one-way restriction valve 640. When the user's desired intake temperature is between the warm water and the predetermined temperature heated by the hot tank 320, the water outlet solenoid valve 630 may be closed so that the normal temperature water enters into the first waterway 410 via the third waterway 430 and is mixed with the hot water outputted from the first pumping device 610. The one-way restrictor valve 640 serves to restrict the flow of water through the third waterway 430. In the case that the normal temperature water flow rate limited by the one-way flow limiting valve 640 is known, the flow rate of the hot water can be changed by adjusting the power of the first pumping means 610, and thus the hot water of a desired intake temperature can be mixed.

Alternatively, it is also contemplated that the water outlet solenoid valve 630 is closed when the first pumping device 610 is not operated, so that the water may flow to the purified water outlet 102 after entering the first waterway 410 through the third waterway 430. Desirably, when the user only needs the water of the water, the water outlet solenoid valve 630 is opened so that the water of the water can be supplied to the purified water outlet 102 according to the pumping flow rate of the second pumping means 620. In addition, the one-way flow limiting valve 640 can prevent the hot water in the first waterway 410 from reversely entering the second waterway 420 and the water tank 310 through the one-way flow limiting valve 640, in addition to limiting the flow.

In some alternative embodiments, the second pumping device 620 may be a brushless pump with adjustable flow. When the flow rate of the second pumping means 620 is not adjustable, the flow rate of the normal-temperature purified water flowing through the one-way restriction valve 640 is fixed, and it may be difficult to output the lower-temperature water or the flow rate may be too small when the lower-temperature water is output. For this purpose, brushless pumps which can be operated in different gear positions can be used for coarse adjustment of the flow. When the gear is higher, the normal-temperature water purifying pressure and flow output by the brushless pump are increased, and the output flow of the subsequent one-way flow limiting valve 640 is also increased, so that the problems are solved. In other embodiments, the pumping flow control mechanism formed by the second pumping device 620, the one-way restrictor valve 640 and the outlet solenoid valve 630 may be replaced by a flow control pump.

Illustratively, a booster pump 230 is disposed within the mounting space 340, the booster pump 230 being serially connected between the first pre-cartridge 210 and the central cartridge 220. When the central filter 220 is a reverse osmosis filter or a nanofiltration filter, water to be pressurized enters the central filter 220. Since the pore size of the reverse osmosis filter element is one fifth (0.0001 micron) of that of the hair, bacteria and viruses are 5000 times of that of the hair, and cannot be seen by naked eyes. Therefore, only water molecules and part of mineral ions beneficial to human bodies can pass through, and other impurities and heavy metals are discharged from the waste water pipe. The filtration precision of the nanofiltration filter core is between the ultrafiltration filter core (the filtration precision is 0.001-0.1 micron) and the reverse osmosis filter core, the desalination rate is lower than that of the reverse osmosis, and the nanofiltration filter core is also a membrane separation technology requiring power-on and pressurization. The reverse osmosis filter element or the nanofiltration filter element can generate a certain proportion of concentrated water in the filtration process. The water purification module work flow of the water purifier 100 is as follows: after the raw water enters the water purifier 100 through the raw water inlet 101, the raw water is filtered through the first pre-filter 210, pressurized through the booster pump 230, and further filtered through the central filter 220, thereby obtaining purified water.

As illustrated in fig. 3 to 4 and fig. 7A to 7B, the water purifier 100 further includes a waterway plate 700, and the waterway plate 700 is perpendicular to a predetermined horizontal direction and is located at the rear of the central cartridge 220 and the installation space 340. A plurality of waterway components are fixed on the waterway plate 700, and waterways are arranged in the waterway plate 700, so that the components connected with the waterway plate can be connected through the waterways on the waterway plate 700. The central cartridge 220 is a consumable that needs to be replaced when it is used for its designed lifetime. The central cartridge 220 is detachably connected to the waterway plate 700, facilitating replacement by a user or service personnel. Illustratively, the waterway plate 700 includes a central cartridge mount 710. The central cartridge 220 is removably connected to the central cartridge mount 710. Optionally, the waterway plate 700 is further provided with a concentrate valve 720 and a water inlet valve 730. The concentrate valve 720 may be connected between the concentrate outlet of the central cartridge 220 and the concentrate outlet 743 of the waterway plate 700 through a waterway inside the waterway plate 700. The water inlet valve 730 may be connected between the water inlet 741 of the waterway plate 700 and the water inlet of the booster pump 230 through a waterway inside the waterway plate 700. The purified water produced after the filtering by the central cartridge 220 may be discharged through the purified water outlet 742 of the waterway plate 700. The waterway plate 700 may further be provided with a booster pump water inlet joint 744 and a booster pump water outlet joint 745, and the water inlet and outlet of the booster pump 230 may be connected to the booster pump water inlet joint 744 and the booster pump water outlet joint 745, respectively. Thus, the purified water filtered by the first pre-cartridge 210 may be introduced into the central cartridge 220 through the water inlet 741, the water inlet valve 730, the booster pump water inlet joint 744, the booster pump 230, and the booster pump water outlet joint 745 of the waterway plate 700 in this order. The purified water filtered by the central cartridge 220 may be discharged through the purified water outlet 742 of the waterway plate 700, and the concentrate water generated during the filtering process may be discharged through the concentrate water outlet 743 of the waterway plate 700. Illustratively, the waterway board 700 is further provided with a fixing hole 750, and the fixing hole 750 is used for fixing with the bracket 330.

Illustratively, the water tank 310 may be located above the hot tank 320. The purified water in the water tank 310 may flow into the hot tank 320 by gravity, so that no additional pumping means are required. To maintain proper internal pressure within the water tank 310, the water tank 310 may be vented to atmosphere and the clean water entering the water tank 310 may flow directly by gravity into the relatively lower hot tank 320. Meanwhile, compared with the common water purifiers with heating functions in the market, the water purifiers are relatively compact in structure and more space-saving.

Illustratively, as shown in fig. 8, a gravity check valve 650, which is unidirectional in the direction of gravity, may be connected between the water outlet of the water tank 310 and the water inlet of the hot tank 320. Illustratively, a blocking block having a density less than that of water may be provided in the gravity check valve 650, and when the water level in the hot tank 320 reaches a maximum value, the blocking block cuts off the waterway due to buoyancy, preventing the flow of liquid between the water tank 310 and the hot tank 320, thereby achieving the purpose of preventing the hot water from entering the water tank 310. When the water level in the hot tank 320 is lowered, the above-mentioned blocking block is lowered due to gravity, and normal temperature purified water in the water tank 310 can flow into the hot tank 320. Therefore, the gravity check valve 650 can automatically and timely replenish water into the hot tank 320 and prevent hot water from flowing into the water tank 310.

Illustratively, in order to control the water level in the hot tank 320 and timely replenish the hot tank 320, a water inlet solenoid valve 660 may be connected between the water outlet of the water tank 310 and the water inlet of the hot tank 320, as shown in fig. 9. When water is absent from the hot tank 320, the water inlet solenoid valve 660 may be opened to replenish water from the water tank 310 to the hot tank 320. When the hot tank 320 is full, the water inlet solenoid valve 660 may be closed to stop the water supply to the hot tank 320. The water level in the hot tank 320 may be detected by a level gauge. The water supply to the hot tank 320 is completed by controlling the water inlet solenoid valve 660, and the water supply can be performed during the time when the user stops taking water, so that the normal-temperature purified water in the water tank 310 can be prevented from flowing into the hot tank 320 during the time when the user takes water, and the temperature of the hot water output from the hot tank 320 can be reduced. Meanwhile, when the water inlet electromagnetic valve 660 is closed, hot water in the hot tank 320 can be prevented from entering the water tank 310 through heat convection, heat exchange and other modes, so that the temperature of normal-temperature purified water is increased, and inaccurate output temperature and energy waste are caused.

The pressure change in the hot tank 320 and the liquid level are different due to the different water replenishment modes, and the positions of the water outlets 322 of the hot tank 320 are different in the two embodiments. In detail, the water outlet 322 of the hot tank 320 may be provided at the lower portion of the hot tank 320 using the scheme of the water inlet solenoid valve 660 to obtain enough hot water. By adopting the scheme of the gravity check valve 650, the water outlet 322 of the hot tank 320 can be arranged at the upper part of the hot tank 320, because the specific gravity of the hot water is smaller than that of the normal-temperature purified water, so that the hot water with high enough temperature can be obtained.

Alternatively, the space within the purifier 100 that houses the hot tank 320 may cooperate with the space that houses the first pre-cartridge 310 to form an elongated cartridge receiving chamber. The elongated cartridge receiving cavity is adapted to receive a second pre-cartridge (not shown). The axial length of the second pre-cartridge may be greater than the axial length of the first pre-cartridge 310. Thus, the structure of the water purifier 100 can be applied to a case where a hot tank is required and a pre-filter is short, or a case where a hot tank is not required and a pre-filter is long. Therefore, the number of production platforms can be reduced, and the processing cost can be reduced. When the second preposed filter element with longer length is needed to be installed, the hot pot is not needed to be installed, and the second preposed filter element is only needed to be further inserted into the space which originally accommodates the hot pot.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front", "rear", "upper", "lower", "left", "right", "transverse", "vertical", "horizontal", and "top", "bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely for convenience of describing the present utility model and simplifying the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, without limiting the scope of protection of the present utility model; the orientation terms "inner" and "outer" refer to the inner and outer relative to the outline of the components themselves.

For ease of description, regional relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein to describe regional positional relationships of one or more components or features to other components or features illustrated in the figures. It will be understood that the relative terms of regions include not only the orientation of the components illustrated in the figures, but also different orientations in use or operation. For example, if the element in the figures is turned over entirely, elements "over" or "on" other elements or features would then be included in cases where the element is "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". Moreover, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and all such cases are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, components, assemblies, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The present utility model has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described. In addition, it will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teachings of the utility model, which variations and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (14)

1. A water purifier is characterized by comprising a water tank, a hot tank, a first preposed filter element and a central filter element, wherein the water tank, the first preposed filter element and the central filter element are positioned on different layers which are arranged along the vertical direction,

the hot tank and the first pre-filter element are positioned on the same layer, and the first pre-filter element and the hot tank are sequentially arranged along a preset horizontal direction,

the axes of the first pre-filter element and the central filter element are parallel to the predetermined horizontal direction.

2. The water purifier of claim 1, wherein the radial dimension of the central cartridge is smaller than the radial dimension of the first pre-cartridge, and the axis of the central cartridge is located on one side of the axis of the first pre-cartridge along a horizontal direction perpendicular to the axis of the central cartridge to form an installation space on a side of the central cartridge.

3. The water purifier of claim 2, wherein a first pumping device is disposed in the installation space, a first waterway is communicated between the water outlet of the water tank and the purified water outlet of the water purifier, and the heat tank and the first pumping device are sequentially disposed on the first waterway along the water flow direction.

4. A water purifier as recited in claim 3, wherein the flow rate of the first pumping device is adjustable.

5. The water purifier of claim 2, wherein a second pumping device is disposed in the installation space, a second waterway is further communicated between the water outlet of the water tank and the purified water outlet of the water purifier, and the second pumping device is disposed on the second waterway.

6. The water purifier of claim 5, wherein the second water passage is further provided with a water outlet electromagnetic valve positioned downstream of the second pumping device, the water outlet electromagnetic valve is arranged in the installation space,

the water purifier also comprises a first pumping device, a first waterway is communicated between the water outlet of the water tank and the purified water outlet, the hot tank and the first pumping device are sequentially arranged on the first waterway along the water flow direction,

the water purifier further comprises a third waterway, wherein the water inlet end of the third waterway is communicated to the second waterway between the second pumping device and the water outlet electromagnetic valve, the water outlet end of the third waterway is communicated to the first waterway at the downstream of the first pumping device, and a unidirectional flow limiting valve is arranged on the third waterway.

7. The water purifier of claim 6, wherein the second pumping device is a brushless pump with adjustable flow.

8. The water purifier of claim 2, wherein a booster pump is disposed in the installation space, the booster pump being connected in series between the first pre-filter element and the central filter element.

9. The water purifier of claim 2, further comprising a waterway plate perpendicular to the predetermined horizontal direction and rearward of the central cartridge and the installation space, the central cartridge being detachably connected to the waterway plate.

10. The water purifier of claim 1, wherein the hot tank and the first pre-cartridge are positioned below the water tank.

11. The water purifier as recited in claim 1, wherein a water inlet solenoid valve and/or a gravity check valve which can be conducted unidirectionally along the gravity direction is connected between the water outlet of the water tank and the water inlet of the hot tank.

12. The water purifier of claim 1, wherein the water purifier comprises a water inlet and a water outlet,

the axial dimension of the central filter element is greater than the axial dimension of the first pre-filter element; and/or

The central filter element is a reverse osmosis filter element; and/or

The first pre-filter element and the central filter element are sequentially connected in series between a raw water inlet (101) of the water purifier and a water inlet of the water tank.

13. The water purifier of claim 1, wherein the first pre-filter element is positioned on a front side of the thermal tank.

14. The water purifier of claim 1, wherein the space within the water purifier that receives the hot tank and the space that receives the first pre-cartridge together form an elongated cartridge receiving chamber that receives a second pre-cartridge having an axial length that is greater than the axial length of the first pre-cartridge.