Water tank assembly for water purifier and water purifier

Abstract

The utility model discloses a water tank assembly for a water purifier, which comprises a water tank (1) provided with a first air vent (13); and a filter (2); the air purifier is characterized in that the filter (2) comprises a shell (21), the shell (21) is provided with a second air vent (2112), an air outlet (2113) and an air inlet (2114), and the second air vent (2112) is in fluid communication with the first air vent (13); the filter screen (22) is mounted at the second air vent (2112); the one-way valve (24) is mounted at the air outlet (2113) and only allows the airflow to be discharged outwards from the inner cavity of the shell (21); the inlet end of the air inlet pipe (25) is communicated with the air inlet (2114), and the outlet end of the air inlet pipe (25) extends into the lower part of the inner cavity of the shell (21). The utility model further discloses a water purifier with the water tank assembly. Compared with the prior art, the filter screen replacement frequency can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to water purification equipment technical field, specifically point to a water tank subassembly for water purifier and water purifier. BACKGROUND

[0002] The water purifier generally only has the function of purifying water quality, and the water purifying speed of the water purifier is also slow, so a water storage tank needs to be equipped to store the purified pure water, so that the water demand can be quickly met when using.

[0003] The existing water storage tank comprises a tank body, a water purification inlet and a water purification outlet arranged on the tank body, and an air vent arranged on the top surface of the tank body, the air vent is connected with an air pipe, and a filter screen is arranged on the air pipe. In this way, when the purified water is stored in the water tank, the water purification outlet is closed, so that the volume of air in the upper part of the water tank cavity is continuously reduced, and the air in the water tank is discharged to the outside atmosphere through the filter screen; when the purified water is discharged, the water purification outlet is opened, and since the flow rate of the purified water discharged is greater than the flow rate of the purified water generated and entering the water tank, the volume of air in the upper part of the water tank cavity is continuously increased, and the outside atmosphere enters the water tank through the filter screen. For details, please refer to the Chinese patent "Water Purifier Water Storage Tank" with the patent application number CN201520028924.2.

[0004] The filter screen has the effect of intercepting small-particle dust in the air, but when the filter screen is completely blocked by dust, the air pressure balance in the water tank may be affected, so the filter screen needs to be replaced, which affects the user experience. INVENTION CONTENTS

[0005] The first technical problem to be solved by the utility model is to provide a water tank subassembly for a water purifier which can reduce the replacement frequency of the filter screen in view of the current status of the prior art.

[0006] The second technical problem to be solved by the utility model is to provide a water purifier applied with the above water tank subassembly.

[0007] The technical scheme adopted by the utility model to solve the above first technical problem is as follows: a water tank subassembly for a water purifier, comprising

[0008] a water tank having a water purification inlet, a water purification outlet and a first air vent; and

[0009] a filter connected at the first air vent;

[0010] characterized in that the filter comprises

[0011] a shell for containing liquid, having a second air vent, an air outlet and an air inlet, the second air vent being in fluid communication with the first air vent;

[0012] A filter screen is installed at the second air vent.

[0013] A one-way valve is installed at the air outlet to allow air flow only from the inner cavity of the shell.

[0014] An air inlet pipe is connected to the air inlet at the inlet end and extends into the lower part of the inner cavity of the shell to be immersed in the liquid.

[0015] To facilitate the replacement of the filter screen, the filter screen is located on the outside of the shell and covers the second air vent.

[0016] To facilitate the replacement of the filter screen, the filter screen is located on the outside of the shell and covers the second air vent.

[0017] To facilitate the replacement of the filter screen, the filter screen is located on the outside of the shell and covers the second air vent.

[0018] To avoid the blockage of the air inlet pipe by large particles, the air inlet is provided with multiple air inlets arranged at intervals, and the diameter of each air inlet is less than 1 / 5 of the diameter of the air inlet pipe.

[0019] To facilitate the replacement of the liquid, the shell comprises an upper shell and a lower shell connected together, and the lower shell is used to hold the liquid.

[0020] To facilitate the removal of the lower shell, the bottom of the upper shell is provided with a first connecting cylinder extending downward, and the top of the lower shell is provided with a second connecting cylinder extending upward, which is threadedly connected to the outer periphery of the first connecting cylinder.

[0021] To facilitate the user to observe the degree of contamination of the liquid, the lower shell is a transparent member.

[0022] To achieve one-way air flow, the one-way valve is a duckbill valve.

[0023] The technical solution adopted by the utility model to solve the second technical problem is a water purifier characterized by the application of the water tank assembly.

[0024] Compared with the prior art, the advantages of this utility model are as follows: the filter, consisting of a shell, a filter screen, a one-way valve, and an air inlet pipe, is installed at the first air inlet of the water tank. When the clean water in the water tank is released, the gas in the outside atmosphere enters through the air inlet pipe, is filtered by the liquid contained in the shell, and then enters the water tank through the filter screen. This is equivalent to adding a pre-filter before the filter screen, which filters out fine dust particles in the air. This can greatly extend the service life of the filter screen and reduce the frequency of filter screen replacement. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the water tank assembly in an embodiment of the water purifier of this utility model;

[0026] Figure 2 for Figure 1 A three-dimensional structural diagram of the filter;

[0027] Figure 3 for Figure 2 A three-dimensional exploded view;

[0028] Figure 4 for Figure 2 A longitudinal sectional view. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0031] The term "fluid connectivity" as used in this utility model refers to the spatial relationship between two components or parts (hereinafter referred to as the first part and the second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow from the first part along a flow path and / or be transported to the second part. This can be a direct connection between the first part and the second part, or an indirect connection between the first part and the second part through at least one third party. The third party can be a fluid channel such as a pipe, channel, conduit, guide, hole, or groove, or a chamber or combination thereof that allows fluid to flow through.

[0032] likeFigures 1 to 4 The image shows a preferred embodiment of the water purifier of the present invention, which incorporates a water tank assembly. The water tank assembly includes a water tank 1 and a filter 2.

[0033] Among them, such as Figure 1 As shown, the top of the water tank 1 has a purified water inlet 11 and a first vent 13, and the bottom of the water tank 1 has a purified water outlet 12. This is the conventional structure of a water purifier tank, and will not be described in detail here.

[0034] like Figures 2 to 4 As shown, filter 2 includes housing 21, filter screen 22, filter screen cover 23, one-way valve 24 and air inlet pipe 25.

[0035] Specifically, the housing 21 includes an upper housing 211 and a lower housing 212 that are connected vertically. The lower housing 212 is used to hold liquid 10 (usually water). The bottom opening of the upper housing 211 has a downwardly extending first connecting cylinder 2111, and the top opening of the lower housing 212 has an upwardly extending second connecting cylinder 2121. The second connecting cylinder 2121 is threaded to the outer periphery of the first connecting cylinder 2111. Thus, when it is necessary to replace the liquid 10 contained in the lower housing 212, it is only necessary to unscrew the lower housing 212, which is simple to operate. The front side wall of the upper housing 211 has multiple second vents 2112 arranged in a matrix at intervals, and the rear side wall of the upper housing 211 has air outlets 2113 and air inlets 2114 at intervals. The lower housing 212 is a transparent part, so that users can easily observe the degree of dirtiness of the liquid 10.

[0036] The filter screen 22 is located on the outside of the housing 21 and covers all the aforementioned second vents 2112;

[0037] The filter cover 23 is snapped onto the outside of the housing 21 and surrounds the outer wall of the housing 21 to form a filter cavity 231 for accommodating the filter 22. A communication hole 232 communicating with the filter cavity 231 is provided on the front side of the filter cover 23. The first vent 13 is connected to the communication hole 232 through the vent pipe 131.

[0038] The one-way valve 24 is a duckbill valve, installed at the air outlet 2113, which only allows airflow to be discharged from the inner cavity of the housing 21 to the outside.

[0039] The air intake pipe 25 is located inside the housing 21. Its inlet end is connected to the aforementioned air intake port 2114, and its outlet end extends into the lower part of the inner cavity of the housing 21 and is immersed in the liquid 10. In addition, there are multiple air intake ports 2114, which are arranged at intervals. The diameter of each air intake port 2114 is less than 1 / 5 of the diameter of the air intake pipe 25. In this way, the air intake port 2114 can act as a primary filter to prevent excessively large particles of debris from entering and clogging the air intake pipe 25.

[0040] The working principle of the embodiment is as follows:

[0041] (1) When the clean water is stored in the water tank 1: the clean water outlet 12 is closed, so the volume of the air in the upper cavity of the water tank 1 is continuously reduced, the air in the water tank 1 enters the filtering cavity 231 through the air pipe 131, is filtered through the filter screen 22, enters the upper shell 211 through the second air inlet 2112, and is finally discharged to the outside through the air outlet 2113 and the one-way valve 24;

[0042] At this time, the air pressure in the water tank 1 is greater than the atmospheric pressure, so the air pressure in the upper shell 211 is also greater than the atmospheric pressure, if there is no one-way valve 24, the liquid 10 in the lower shell 212 will flow outward through the air inlet pipe 25, therefore, the one-way valve 24 avoids the flow outward, and the overpressure gas can be discharged through the one-way valve 24;

[0043] (2) When the clean water in the water tank 1 is discharged: the clean water outlet 12 is opened, because the flow rate of the clean water discharged is greater than the flow rate of the clean water entering the water tank 1, so the volume of the air in the upper cavity of the water tank 1 is continuously increased, the atmospheric air is preliminarily filtered through the air inlet 2114, enters the lower shell 212 through the air inlet pipe 25, is further filtered by the liquid 10 in the lower shell 212, enters the upper shell 211, then enters the filtering cavity 231 through the second air inlet 2112, and finally enters the water tank 1 through the filter screen 22 and the air pipe 131;

[0044] At this time, the air pressure in the water tank 1 is less than the atmospheric pressure, so the air pressure in the upper shell 211 is also less than the atmospheric pressure, the one-way valve 24 is closed, the gas in the atmospheric air enters through the air inlet pipe 25, is filtered by the liquid 10 in the lower shell 212, and then enters the water tank 1 through the filter screen 22, which is equivalent to adding a pre-filtering water filtering device in front of the filter screen 22, filtering the fine dust particles in the air (the filtering efficiency can reach more than 98%), so that the service life of the filter screen 22 can be greatly prolonged, and the frequency of replacing the filter screen by the user is reduced.

Claims

1. A water tank assembly for a water purifier, comprising a water tank (1) having a purified water inlet (11), a purified water outlet (12) and a first air vent (13); and a filter (2) connected at the first air vent (13); characterized in that the filter (2) comprising a housing (21) for containing a liquid (10), having a second air vent (2112), an air outlet (2113) and an air inlet (2114), the second air vent (2112) being in fluid communication with the first air vent (13); a filter screen (22) mounted at the second air vent (2112); a one-way valve (24) mounted at the air outlet (2113) to allow air flow only from the interior of the housing (21) to the outside; and an air inlet tube (25) having an inlet end communicating with the air inlet (2114) and an outlet end extending into the lower part of the interior of the housing (21) to be immersed in the liquid (10).

2. The water tank assembly of claim 1, wherein: the filter screen (22) being located outside the housing (21) and covering the second air vent (2112).

3. The water tank assembly of claim 2, wherein: the second air vent (2112) being in a plurality of numbers and being arranged in a matrix.

4. The water tank assembly of claim 2, wherein: the filter (2) further comprising a filter screen cover (23) detachably connected outside the housing (21) and enclosing with the outer wall of the housing (21) a filter cavity (231) for accommodating the filter screen (22), the surface of the filter screen cover (23) having a communication hole (232) therethrough in communication with the filter cavity (231), the first air vent (13) being in communication with the communication hole (232) through an air vent tube (131).

5. The water tank assembly of claim 1, wherein: the air inlets (2114) being in a plurality of numbers and being arranged at intervals, each air inlet (2114) having a diameter less than 1 / 5 of the diameter of the air inlet tube (25).

6. The water tank assembly of claim 1, wherein: the housing (21) comprising an upper housing (211) and a lower housing (212) connected together, the lower housing (212) being for containing the liquid (10).

7. The water tank assembly of claim 6, wherein: the upper housing (211) having a first connecting cylinder (2111) extending downwardly at the bottom opening thereof, the lower housing (212) having a second connecting cylinder (2121) extending upwardly at the top opening thereof, the second connecting cylinder (2121) being threadedly connected to the outer periphery of the first connecting cylinder (2111).

8. The water tank assembly of claim 6, wherein: the lower housing (212) being a transparent member.

9. The water tank assembly of any one of claims 1 to 8, wherein: the one-way valve (24) being a duckbill valve.

10. A water purifier characterized by comprising: application of the water tank assembly according to any one of claims 1 to 9.

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