WO2020010976A1

WO2020010976A1 - Scale inhibition device, water inlet valve assembly and water heater

Info

Publication number: WO2020010976A1
Application number: PCT/CN2019/090422
Authority: WO
Inventors: 谢云云; 王明; 张世美; 吴金水
Original assignee: 芜湖美的厨卫电器制造有限公司; 美的集团股份有限公司
Priority date: 2018-07-09
Filing date: 2019-06-06
Publication date: 2020-01-16

Abstract

Disclosed is a scale inhibition device, comprising a housing (128) and a scale inhibitor (138) arranged inside the housing (128), wherein the housing (128) is in communication with a water channel (152); a portion, located in the water channel (152), of the housing (128) is provided with a water through hole (106); and the water through hole (106) is used for releasing the scale inhibitor (138) into the interior of a valve body (104). The device can prevent water resources from being wasted when adding a scale inhibitor. Further disclosed are a water inlet valve assembly (10) and a water heater.

Description

Scale inhibitor, water inlet valve assembly and water heater

This application requires that the China Patent Office be filed on July 9, 2018, with the application number 201810756870.X, the invention name be "Inlet Valve Assembly and Water Heater", and the China Patent Office, with the application number 201811227168.0, on October 22, 2018. The priority of the Chinese patent application with the invention name of "scale inhibitor for water heaters" is incorporated herein by reference in its entirety.

Technical field

The present application relates to the field of household appliances, and in particular, to a scale inhibition device, a water inlet valve assembly, and a water heater.

Background technique

During the operation of the water heater, some impurities (such as large particles, dirt, etc.) often accumulate in its inner container. Generally, a scale inhibitor is often provided in the inner liner of a water heater, and the scale inhibitor performs a physical or chemical reaction with certain elements or substances or impurities in the water, thereby reducing the formation of scale inhibition in the water.

The existing scale inhibition device is generally directly installed on the liner, that is, a separate installation hole is generally opened in the liner, and the scale inhibition device is placed in the liner through the installation hole, and the installation hole is sealed. . However, since the scale inhibitor in the scale inhibition device is gradually consumed over time, the scale inhibitor needs to be frequently taken out to replenish the scale inhibitor. In the existing installation method, in order to remove the scale inhibition device, it is necessary to open the installation hole of the inner tank, and the inner tank is often filled with water. When the installation hole is opened, the water in the inner tank will flow out and cause water. Waste of resources.

Summary of the invention

This application aims to solve at least one of the technical problems existing in the prior art.

For this reason, the first aspect of the present application provides a scale inhibition device.

A second aspect of the present application provides a water inlet valve assembly.

A third aspect of the present application provides a water heater.

The main purpose of the present application is to propose a water inlet valve assembly, which is intended to install a scale inhibition device on the water inlet valve assembly to avoid waste of water resources when a scale inhibitor is added.

In order to achieve the above object, the first aspect of the present application proposes a scale inhibition device, which includes a casing and a scale inhibitor disposed in the casing, the casing is in communication with a water passage, and the casing is located in the water passage A part of the channel is provided with a water passing hole, and the water passing hole is used to release a scale inhibitor toward the water passing channel.

In addition, the scale inhibition device according to the embodiment of the present application may also have the following additional technical features:

Optionally, the housing includes a projecting portion, one end of which is open, and the other end is provided with a shielding member, the projecting portion at least partially projects into the water channel, and the projecting portion is The peripheral wall is provided with the water passing hole.

Optionally, the housing includes a handle portion, one end of which is closed, and the other end is provided with an opening. The side wall of the water passage is provided with a mounting hole, and the handle portion is installed in a detachable connection structure. The mounting hole.

Optionally, the outer peripheral surface of the handle portion is provided with an external thread, and the hole wall of the mounting hole is provided with an internal thread screwed with the external thread; the outer peripheral surface of the handle portion is provided with a stop projection, The stop protrusion is in abutment with the outer wall surface of the water passage; the handle part is provided with a sealing ring, and the sealing ring is in abutment with the hole wall of the mounting hole.

Optionally, a limiting ring rib is provided on an outer peripheral surface of the handle portion, and a limiting ring groove matching the limiting ring rib is provided on an inner peripheral surface of the protruding portion; an outer periphery of the protruding portion An anti-rotation rib is provided on the surface, and an inner wall of the water passage is correspondingly provided with an anti-rotation groove, and the anti-rotation rib is adapted to be mated with the anti-rotation groove.

Optionally, the protruding portion includes two ring-shaped skeletons arranged at intervals, and a plurality of strip-shaped skeletons connecting the two ring-shaped skeletons, and an interval between two adjacent strip-shaped skeletons constitutes the passing water. A filter screen is provided in the protruding portion, and the filtering hole net covers the water passing hole; a limiting rib is provided in the protruding portion, and the limiting rib extends along the axis of the protruding portion And arranged near the inner peripheral surface of the protruding portion, the filter screen extends along the peripheral wall of the protruding portion, and the filter screen is located between the stop rib and the inner surface of the protruding portion .

Optionally, the scale inhibition device further includes a magnetic rod, and the magnetic rod is disposed in the housing.

In this application, by installing the scale inhibition device on the valve body of the water inlet valve body, it is equivalent to integrating the scale inhibition device and the water inlet valve body to form an integrated module. Therefore, when installing, only the valve body needs to be installed. It can be installed with the inner tank of the water heater, and it is not necessary to separately install both the scale inhibition device and the water inlet valve body, so the installation steps of the water inlet valve body and the scale inhibition device and the water heater can be simplified. In addition, because the scale inhibition device is integrated on the inlet valve body and is located outside the liner of the water heater, when a scale inhibitor is required, the connection between the inlet valve body and the liner does not change. It is only necessary to remove the scale inhibition device from the valve body without removing the entire component from the inner liner, so the wear between the water inlet valve assembly and the inner liner can be reduced, and the reliability of the seal between the two can be ensured. Furthermore, when the scale-inhibiting device is removed, the water inlet valve body is closed, and the water in the liner will not flow out, so it will not wet the user, and it will not cause waste of water resources.

Optionally, the housing has a storage cavity that communicates with the water passage, and the storage cavity is filled with the scale inhibitor; the scale inhibition device further includes a slider, and the slider is provided in the In the storage cavity, as the scale inhibitor decreases, the slider gradually moves from the handle portion to the protruding portion until the slider blocks the normal flow of the water passage.

Optionally, an elastic member is provided at one end of the handle provided with the handle portion, one end of the elastic member stops against the inner end wall of the handle portion, and the other end of the elastic member stops against the On the slider to provide thrust to the slider.

In this application, by providing a scale inhibition device in the water passage, the slider will interfere with the normal circulation of the water passage when there is very little scale inhibitor in the storage cavity, thereby prompting the user to add a scale inhibitor in time, so that Natural water can be fully scaled and inhibited before entering the water heater, thereby increasing the service life of the water heater and providing users with high-quality and healthy water.

The second aspect of the present application proposes a water inlet valve assembly, including: a water inlet valve body, the water inlet valve body includes a valve body and a valve core, the valve core is mounted on the valve body, and the valve body The peripheral wall is provided with a mounting hole, a water passage is formed in the valve body; and the scale inhibition device according to any one of the first aspect of the present application, the casing extends from the mounting hole into the valve body, and The casing is sealedly connected to the valve body. A portion of the casing located in the valve body is provided with a water passing hole, and the water passing hole is used to release a scale inhibitor into the water passing channel.

In addition, the water inlet valve assembly according to the embodiment of the present application may also have the following additional technical features:

Optionally, the casing is detachably connected to the water inlet valve body.

Optionally, it further comprises: a pressure relief channel is provided on one side of the water inlet valve body, and a pressure relief valve is provided at a connection between the pressure relief channel and the water passing channel, and when the pressure in the water heater is greater than a predetermined pressure The pressure relief valve is opened, and the pressure is released outward through the pressure relief channel.

Optionally, it further comprises: a one-way stop valve, which is provided in the water passage, and is opened when the water pressure on one side of the water passage is greater than the water pressure on the other side, Conduct through the water channel; and block the water channel when the water pressure on one side of the water channel is lower than the water pressure on the other side.

Optionally, it further comprises: a flow detection device, the flow detection device is provided in the water passage and is connected to the main control board of the water heater, and when the flow detection device detects that the flow in the water passage is zero At the same time, the main control board sends out a signal for adding a scale inhibitor.

Optionally, it further includes: two electrodes, the two electrodes are respectively connected to the main control board of the water heater, and when the slider reaches the normal flow path of blocking the water flow, the slider is respectively connected to the two electrodes The contact forms a current loop. After receiving the current signal, the main control board sends out a signal for adding a scale inhibitor.

Optionally, it further comprises: an LED lamp, the LED lamp is provided between the two electrodes, and when the slider reaches the normal flow channel blocking the water flow, the slider of the scale inhibition device is respectively connected with two The electrodes contact to form a current loop, and the LED lamp is illuminated.

The third aspect of the present application proposes a water heater, comprising: an inner tank, wherein the inner tank is provided with a water inlet; the scale inhibition device according to any one of the first aspect of the present application, the scale inhibition device is installed in the water tank; The water inlet; or the water inlet valve assembly according to any one of the second aspect of the present application, the water inlet valve assembly is installed at the water inlet.

Additional aspects and advantages of the application will become apparent in the following description, or be learned through practice of the application.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, wherein

1 is a schematic structural diagram of an embodiment of an inlet valve assembly of the present application;

FIG. 2 is a sectional view of the water inlet valve assembly in FIG. 1; FIG.

3 is a schematic structural diagram of a handle portion in FIG. 1;

4 is a schematic sectional view of the handle portion in FIG. 3;

5 is a schematic cross-sectional view of the casing in FIG. 2;

6 is a schematic structural diagram of a casing in FIG. 2;

FIG. 7 is a schematic structural diagram of the protruding portion in FIG. 2; FIG.

8 is a schematic sectional view of the protruding portion in FIG. 7;

9 is a schematic plan view of the protruding portion in FIG. 7;

10 is a schematic structural diagram of a water inlet valve assembly according to an embodiment of the present application, in which a water passage is in a conducting state;

11 is a schematic structural diagram of a water inlet valve assembly according to an embodiment of the present application, in which a water passage is in a blocking state;

12 is a schematic structural diagram of a water inlet valve assembly according to another embodiment of the present application, in which a water passage is in a conducting state;

13 is a schematic structural diagram of a water inlet valve assembly according to another embodiment of the present application, in which a water passage is in a blocking state;

14 is a schematic structural diagram of a water inlet valve assembly according to still another embodiment of the present application, in which a water passage is in a conducting state;

15 is a schematic structural diagram of a water inlet valve assembly according to still another embodiment of the present application, in which a water passage is in a blocking state;

16 is a schematic structural diagram of a housing according to some embodiments of the present application;

FIG. 17 is a perspective view of a housing according to some embodiments of the present application.

Wherein, the correspondence between the reference numerals and component names in FIG. 1 to FIG. 17 is:

10 water inlet valve assembly, 100 water inlet valve body, 102 entry portion, 104 valve body, 106 water hole, 108 extension flange, 110 limit ring groove, 112 convex portion, 114 anti-turn bar, 116 depression portion , 118 ring-shaped skeleton, 120 spool, 122 strip-shaped skeleton, 124 scale inhibition device, 126 shielding rib, 128 shell, 130 arc-shaped skeleton, 132 handle part, 134 stop rib, 136 external thread, 138 scale inhibitor, 140 Stop protrusion, 142 sealing ring, 144 limit ring rib, 146 filter screen, 148 receiving ring groove, 150 magnetic rod, 152 water passage, 154 water inlet, 156 water outlet, 158 pressure relief channel, 160 storage cavity , 162 slider, 164 plug, 166 elastic piece, 168 one-way stop valve, 170 pressure relief valve, 172 flow detection device, 174 electrodes, 176 LED lights.

detailed description

In order to more clearly understand the foregoing objectives, features, and advantages of the present application, the present application is described in further detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

The scale inhibition device 124, the water inlet valve assembly 10, and the water heater according to some embodiments of the present application will be described below with reference to FIGS. 1 to 17.

Specific embodiment one:

As shown in FIGS. 1 to 9, the scale inhibition device 124 provided by some embodiments of the present application includes a casing 128 (as shown in FIG. 5) and a scale inhibitor 138 provided in the casing 128. There are mounting holes (not shown in the figure), the casing 128 projects from the mounting holes into the valve body 104, and the casing 128 is sealedly connected to the valve body 104 to prevent water in the valve body 104 from leaking from the connection between the casing 128 and the valve body 104 . A portion of the casing 128 located in the valve body 104 is provided with a water passing hole 106 (as shown in FIG. 7). The water passing hole 106 is used to release small particles of scale inhibitor 138 into the valve body 104. When water flows through the casing 128, Water flows into the casing 128 through the water hole 106 on the casing 128, so that the scale inhibitor 138 is soaked in water, and the small particles of scale inhibitor 138 are slowly released. The small particles of scale inhibitor 138 are dissolved in the water and follow the water. It flows out from the water passing hole 106 and flows to the water outlet end of the valve body 104. The scale inhibitor 138 can physically or chemically react with certain elements or substances or impurities in water, thereby reducing the formation of scale inhibitors in water.

In the embodiment of the present application, the valve core 120 is installed at the water outlet end of the valve body 104, and the scale inhibition device 124 is installed at the water inlet end of the valve body 104. Of course, the scale inhibition device 124 may also be installed at the water outlet end of the valve body 104.

In this application, by installing the scale inhibition device 124 on the valve body 104 of the water valve body 100, it is equivalent to integrating the scale inhibition device 124 and the water inlet valve to form an integrated module. Therefore, when installing, only the The valve body 104 and the liner of the water heater can be installed, and it is not necessary to separately install the water inlet valve body 100 and the scale inhibition device 124 on the water heater liner, so the inlet valve body 100 and the scale inhibition device 124 can be simplified Installation steps with water heater. In addition, because the scale inhibition device 124 is integrated on the water inlet valve and is located outside the inner liner of the water heater, when the scale inhibitor 138 needs to be added, the connection between the water inlet valve and the inner liner does not change, and only the water inlet is required. It is only necessary to remove the scale inhibition device 124 from the valve without removing the entire component from the liner, so that the wear between the water inlet valve assembly 10 and the liner can be reduced, and the reliability of the seal between the two can be ensured. Furthermore, when the scale inhibition device 124 is removed, the water inlet valve is closed, and the water in the inner container will not flow out, so it will not wet the user, and it will not cause waste of water resources.

In this embodiment, as shown in FIG. 6, the housing 128 includes a handle portion 132 and a protruding portion 102. The handle portion 132 and the protruding portion 102 are both cylindrically arranged. One end of the handle portion 132 is closed and the other end is opened. One end of the protruding portion 102 is open, and the other end is provided with a shielding member. The open end of the handle portion 132 is sleeved with the open end of the protruding portion 102. Specifically, the scale inhibitor 138 can be put into the handle 132 or the inner space of the extension 102 first, and then the handle 132 and the extension 102 can be sleeved together to prevent the scale inhibitor 138 from falling out. A shielding member is also provided at the other end of the protruding portion 102, which can also prevent the scale inhibitor 138 from falling out. The shielding member may be a plurality of shielding ribs 126 (shown in FIG. 7) arranged alternately, or the shielding member is a shielding cover. , Completely covering the other end of the protruding portion 102 is provided. In this embodiment, the protruding portion 102 is used as a water-passing element, so the protruding portion 102 is protruded into the valve body 104, and a water-passing hole 106 is provided on the peripheral wall of the protruding portion 102. The handle portion 132 is used as a holding element, so the handle portion 132 is at least partially exposed outside the valve body 104 for users to hold. The handle portion 132 is sealedly connected to the valve body 104 to prevent water from flowing out, and one end of the handle portion 132 is closed to prevent water from flowing out of the valve body 104. In other embodiments, the casing 128 may include a cover plate and a cylinder body that is open at one end and closed at the other end, and the cover plate is disposed at the open end of the cylinder body.

Since the scale inhibitor 138 will be slowly released, it is necessary to frequently add the scale inhibitor 138 or replace the scale inhibitor 124. Therefore, in this embodiment, the handle portion 132 is detachably connected to the valve body 104, and the handle portion can be removed. 132, and the protruding portion 102 is connected to the handle portion 132, so it can be taken out together with the protruding portion 102. After the scale inhibition device 124 is completely removed, the handle portion 132 and the protruding portion 102 are separated and faced. A scale inhibitor 138 is added to the scale inhibitor 124.

Please refer to FIG. 3 and FIG. 4 in combination, there are various ways to detachably connect the handle portion 132 and the valve body 104. For example, in some embodiments, the outer peripheral surface of the handle portion 132 is provided with external threads 136, and the wall of the mounting hole An internal thread (not labeled) screwed with the external thread 136 is provided. After the handle portion 132 and the protruding portion 102 are assembled, the protruding portion 102 is extended into the valve body 104 and the handle portion 132 is rotated, so that the internal thread and the external thread 136 are screwed together. To prevent slipping during rotation, a non-slip protrusion may be provided on the outer peripheral surface of the handle portion 132. In other embodiments, two ear plates or more ear plates may be provided on the outer peripheral surface of the handle portion 132, screw holes are provided on the ear plates, and studs and ear plates are provided on the outer peripheral surface of the valve body 104. The screw hole on the upper part is docked with the screw hole on the stud, and is locked by a screw.

Further, a sealing ring 142 is provided on the outer surface of the handle portion 132, and the sealing ring 142 is in sealing contact with the hole wall of the mounting hole to prevent the valve body 104 from leaking water. In order to prevent the seal ring 142 from moving in the axial direction of the handle portion 132, an accommodation ring groove 148 is provided on the outer peripheral surface of the handle portion 132. The seal ring 142 is provided in the accommodation ring groove 148, and the The groove wall has a blocking effect on the seal ring 142 and can restrict the movement of the seal ring 142.

In order to prevent the handle portion 132 from excessively moving into the valve body 104 and squeezing the inner peripheral wall of the valve body 104, a stopper protrusion 140 is provided on the outer peripheral surface of the handle portion 132, and the stopper protrusion 140 abuts against the outer peripheral surface of the valve body 104. Therefore, during the rotation of the handle portion 132 inward, after the stop protrusion 140 abuts on the outer peripheral surface of the valve body 104, it is possible to prevent the handle portion 132 from continuing to move inward and squeeze the inner peripheral wall of the valve body 104. The stopper protrusions 140 may be ring-shaped, or there may be a plurality of stopper protrusions 140. The plurality of stopper protrusions 140 are arranged at intervals along the circumferential direction of the handle portion 132. For example, the stopper protrusions 140 are two or four. One or five and so on.

Please refer to FIGS. 4 to 8 in combination. In the embodiment of the present application, the handle portion 132 and the protruding portion 102 are detachably connected, so it is more convenient to add the scale inhibitor 138. Specifically, a stop ring rib 144 is provided on the outer peripheral surface of the handle portion 132, and a stop ring groove 110 is provided on the inner peripheral surface of the protruding portion 102 to cooperate with the stop ring rib 144. The cooperation of the limit ring rib 144 and the limit ring groove 110 can restrict the handle portion 132 from moving axially outward along the protruding portion 102 and disconnect from the connection with the protruding portion 102. In order to facilitate the sliding of the stop ring rib 144 into or out of the stop ring groove 110, the opening of the stop ring groove 110 is gradually expanded, so that the groove wall of the stop ring groove 110 forms a guide surface, and the stop ring rib 144 Can slide along the guide surface; in addition, along the protruding direction of the stop ring rib 144, the thickness of the stop ring rib 144 gradually becomes smaller, that is, the thickness of the end of the stop ring rib 144 near the handle portion 132 is greater than The thickness of one end remote from the handle portion 132. In addition, the positions of the limit ring ribs 144 and the limit ring grooves 110 are interchangeable, that is, the limit ring ribs 144 are provided in the protruding portion 102, and the limit ring grooves 110 are provided in the handle portion 132.

Please refer to FIG. 7 again. In order to prevent the protruding portion 102 from rotating in the valve body 104, an anti-rotation rib 114 is provided on the outer peripheral surface of the protruding portion 102, and an inner wall of the valve body 104 is provided with an anti-rotation groove (not labeled). The anti-turn bars 114 fit into the anti-turn grooves. When the handle portion 132 rotates, the limit ring rib 144 on the handle portion 132 rotates in the limit ring groove 110 on the protruding portion 102, and the limit ring rib 144 is always caught in the limit ring groove 110; Since the anti-turn bar 114 is caught in the anti-rotation groove, the protruding portion 102 does not rotate, and the protruding portion 102 only moves outward or inward with the handle portion 132, so that the handle portion 132 brings the protruding portion 102 away from or It is sent into the valve body 104. In addition, the anti-rotation ribs 114 and the anti-rotation grooves can also perform positioning functions, so that the protruding portion 102 can be installed at an angle required by the user. Optionally, the anti-rotation rib 114 is disposed near the open end of the protruding portion 102, so that the anti-rotation groove is located near the installation hole, which is more convenient to process the anti-rotation groove. In this embodiment, two anti-steering ribs 114 are provided on the outer peripheral surface of the protruding portion 102, and the two anti-steering ribs 114 are spaced apart along the circumferential direction of the protruding portion 102. Of course, in other embodiments, the number of the anti-turn bars 114 may be one or more. In addition, the positions of the anti-rotation ribs 114 and the anti-rotation grooves are interchangeable, that is, anti-rotation grooves are provided on the outer peripheral surface of the protruding portion 102, and anti-rotation ribs 114 are correspondingly provided on the inner wall of the valve body 104.

In the embodiment of the present application, the protruding portion 102 is provided in a hollow shape to form a plurality of water passing holes 106, so the blocking effect of the scale inhibition device 124 on the water flow can be reduced. Specifically, the protruding portion 102 includes two ring-shaped skeletons 118 arranged at intervals, and a plurality of strip-shaped skeletons 122 connecting the two ring-shaped skeletons 118. The space between two adjacent skeletons 122 forms a water hole 106. For example, there may be four strip-shaped skeletons 122, so that the distance between two adjacent strip-shaped skeletons 122 is larger, which is more conducive to the flow of water. In this embodiment, by providing the protruding portion 102 as a skeleton structure, compared with the protruding portion 102 having a sieve barrel shape, the structural strength of the protruding portion 102 can be ensured, and the water passing hole 106 can be increased. Hole diameter to reduce the blocking of water flow. In addition, by setting the scale inhibitor 138 into a large block shape or a tube shape, leakage of the block scale inhibitor 138 can be prevented. Further, the protruding portion 102 is further provided with a plurality of arc-shaped skeletons 130. The plurality of arc-shaped skeletons 130 are spaced apart along the axial direction of the protruding portion 102 and are connected to two adjacent strip-shaped skeletons 122. Specifically, a plurality of arc-shaped skeletons 130 may be provided between any two adjacent strip-shaped skeletons 122 to completely surround the scale inhibitor 138, that is, the arc-shaped skeleton 130 may also have a ring shape. And all the strip-shaped skeletons 122 are connected in order. Of course, a plurality of arc-shaped skeletons 130 may also be provided only on the surface of the protruding portion 102 facing the water inlet end of the valve body 104. The plurality of arc-shaped skeletons 130 are arranged at intervals along the axial direction of the protruding portion 102 and are adjacent to two adjacent strips. The skeletons 122 are connected. The arrangement of the arc-shaped skeleton 130 can reduce the hole diameter of the water passing hole 106, so that the block-shaped scale inhibitor 138 can be prevented from leaking from the surface of the protruding portion 102 facing the water inlet end of the valve body 104. In other embodiments, the protruding portion 102 may also be provided in the shape of a screen.

Please refer to FIG. 5 again. Further, a filter screen 146 is further provided in the protruding portion 102, and the filter screen 146 is disposed to cover the inner hole of the valve body 104 to filter all the water flowing through the valve body 104. Moreover, the arrangement of the filter screen 146 can prevent the large scale inhibitor 138 from leaking out of the filter screen 146. Optionally, the filter screen 146 extends along the peripheral wall of the projecting portion 102 and is arranged in an arc shape, and the filter screen 146 is disposed on the side of the projecting portion 102 near the water outlet end of the valve body 104 to block the block scale inhibitor 138 It flows to the water outlet end of the valve body 104; and the arc-shaped skeleton 130 is located on the side of the protruding portion 102 that is close to the water inlet end of the valve body 104 to block the block scale inhibitor 138 from flowing to the water inlet end of the valve body 104. Of course, the filter screen 146 may be provided in a cylindrical shape, and the arc-shaped frame 130 may not be provided for blocking.

Please refer to FIGS. 7 to 9 in combination. A limiting rib 134 is provided in the protruding portion 102. The limiting rib 134 extends along the axis of the protruding portion 102 and is disposed near the inner peripheral surface of the protruding portion 102. The inner peripheral surfaces of 102 are arranged at intervals. In this embodiment, two ends of the limiting rib 134 are correspondingly connected to the two annular skeletons 118, or one end of the limiting rib 134 is connected to the shielding rib 126 and the other end is connected to the annular skeleton 118. The filter screen 146 extends along the peripheral wall of the protruding portion 102, and the filter screen 146 is located between the limiting rib 134 and the inner surface of the protruding portion 102. The setting of the limiting rib 134 can limit the filter screen 146 to prevent filtering The net 146 moves in the axial direction of the valve body 104 under the impact of the water flow.

The shape of the scale inhibitor 138 may be a tube shape, a block shape, or the like. In order to prevent the scale inhibitor 138 from directly falling out of the through hole 106 of the protruding portion 102, the block scale inhibitor 138 is generally large. Generally, the scale inhibitor 138 is porous, and can supply water to flow from the inside of the scale inhibitor 138. When the scale inhibitor 138 becomes small particles and is dissolved in water, it can flow with the water flow to reduce scale inhibition in water. Formation.

Please refer to FIG. 2 again. Further, the scale inhibition device 124 further includes a magnetic rod 150, and the magnetic rod 150 is disposed in the casing 128. In this embodiment, the magnetic rod 150 extends along the axial direction of the casing 128. By providing the magnetic rod 150, the magnetic rod 150 can absorb impurities in the water, so that the water source is purified. The number of the magnetic rods 150 is not limited, and can be set according to the needs of the user and the size of the protruding portion 102.

The outer peripheral wall of the valve body 104 is provided with an extension flange 108. The installation hole is provided on the extension flange 108. The extension flange 108 can extend the length of the hole wall of the installation hole and increase the hole of the handle portion 132 and the installation hole. The contact area between the walls is conducive to improving the installation stability between the two.

The inner peripheral wall of the valve body 104 is provided with a recessed portion 116 at a position facing the mounting hole, and a convex portion 112 is provided on the outer peripheral wall of the valve body 104 at a position corresponding to the recessed portion 116. The projecting portion 102 can project into the recessed portion 116, and the end portion of the projecting portion 102 abuts against the surface of the mounting hole facing the recessed portion 116, and can block water from the projecting portion 102 without flowing through the scale inhibitor 138. The gap between the end of the valve body and the inner peripheral wall of the valve body 104 flows out. In this embodiment, the diameter of the projecting portion 102 may be the same as the inner diameter of the valve body 104. In this way, the outer peripheral surface of the projecting portion 102 can be in contact with the inner peripheral surface of the valve body 104, and all water flows into the projecting portion first. 102, and in contact with the scale inhibitor 138, and then flows out from the extending portion 102, which can ensure that the scale inhibitor 138 is fully mixed with the water flow, and that all water flows can carry small particles of the scale inhibitor 138, which enhances the resistance The scale inhibitory effect of the scale agent 138 on the water flow.

As shown in FIG. 1 and FIG. 2, the water inlet valve assembly 10 provided by some embodiments of the present application includes an inner tank. The inner tank is provided with a water inlet 154 and a water outlet 156, and the water inlet 154 is provided with a water inlet valve assembly 10. A water outlet valve assembly is provided at the water outlet 156. As shown in FIG. 1, in the embodiment of the present application, the water inlet valve assembly 10 includes a water inlet valve body 100 and a scale inhibition device 124.

With reference to FIG. 2, the water inlet valve body 100 includes a valve body 104 and a valve core 120. The valve core 120 is mounted on the valve body 104 and is used to control the valve body 104 to be turned on or off. The valve body 104 is provided in a substantially cylindrical shape to allow water flow to pass through. The water inlet end of the valve body 104 is in communication with the water inlet pipe. For example, a thread may be provided on the water inlet end of the valve body 104 for connection of the water inlet pipe; the water outlet end of the valve body 104 is connected to the water inlet 154 of the liner or connected to a heat exchanger. Inlet end of the pipe. The valve core 120 may be a manual valve core 120 or an electric valve core 120, that is, the water inlet valve body 100 may be a manual valve or a solenoid valve. The valve core 120 can control the valve body 104 to be turned on or off to control the flow of water.

The water heater provided by some embodiments of the present application may be an electric water heater, a gas water heater, or a solar water heater.

Specific embodiment two:

As shown in FIG. 10 to FIG. 17, the scale inhibition device 124 provided by some embodiments of the present application includes a casing 128 and a slider 162. The casing 128 has a storage cavity 160 communicating with the water passage 152, and the storage cavity 160 is filled with a scale inhibitor. The slider 162 is provided in the storage cavity 160. As the scale inhibitor decreases, the slider 162 gradually moves from one end of the storage cavity 160 to the other end. When there is little scale inhibitor in the storage cavity 160, the slider 162 will block the circulation of the water passage 152.

In other words, the slider 162 can be movably disposed in the storage cavity 160. As the scale inhibitor is consumed, the slider 162 can block water from entering the water passage 152. It should be noted that “blocking” may only reduce the flow rate of the water passage 152 (that is, the flow rate in the water passage 152 is between zero and the maximum value), and the flow rate in the water passage 152 may also be zero (that is, The slider 162 completely blocks the water passage 152, and no water flows in the water passage 152).

In other words, when the scale inhibitor is very small, the water heater cannot be used normally due to the blocking effect of the slider 162. In this way, when the user finds that the water heater does not produce water or the water output decreases, the user can consciously check the storage cavity 160 Whether there is sufficient scale inhibitor inside, if it is really because the scale inhibitor is not available, the slider 162 blocks the water flow, then the user can add the scale inhibitor in time to ensure that the water heater works normally and can be effectively scale inhibited.

It should be noted that, because the scale inhibitor is usually in a powder form, the “very few scale inhibitors” described in this application does not mean that there are no scale inhibitors in the storage cavity 160, and there may be very few, Only in this case, the slider 162 has affected the flow rate of the water passage 152.

In short, according to the water inlet valve assembly 10 according to the embodiment of the present application, by providing a scale inhibitor 124 in the water passage 152, the slider 162 will interfere with the fact that the scale inhibitor in the storage cavity 160 is very small. The normal circulation of the water channel 152 prompts the user to add a scale inhibitor in time, so that natural water can be fully scaled and inhibited before entering the water heater, thereby increasing the service life of the water heater and providing users with high-quality and healthy water.

In order to facilitate the user to add the scale inhibitor in time, in some embodiments of the present application, the casing 128 is detachably connected to the water inlet valve body 202. For example, referring to FIG. 10 and FIG. 15 in combination with FIG. 16 and FIG. 17, the casing 128 and the water inlet valve body 202 are connected by threads. When the casing 128 extends into the water inlet valve body 202, the casing 128 is provided with external threads, The water valve body 202 is provided with internal threads that cooperate with external threads. Of course, the above is only schematic, and the casing 128 and the water inlet valve body 202 can also be connected in a snap manner.

In some optional embodiments of the present application, the casing 128 is a cavity structure with one end open, and the open end of the casing 128 is provided with a plug 164. The plug 164 can limit the scale inhibitor in the storage cavity 160 to prevent the scale inhibitor from flowing in the axial direction of the casing 128. In other words, the water flow in the water passage 152 crosses the storage cavity 160, that is, the water flow direction intersects with the extension direction of the casing 128, so that the water flow and the scale inhibitor can be fully contacted, and the effect of scale inhibition and scale inhibition is improved.

Further optionally, referring to FIGS. 10 and 15 in combination with FIGS. 16 and 17, the peripheral wall of the casing 128 is provided with a water passing hole 106, and water on one side of the water passing channel 152 (as shown in the lower end in FIG. 10) passes through the water passing hole 106. Enter the storage cavity 160, and then enter the other side of the water passage 152 through the water hole 106 (as shown in the upper end in FIG. 10). That is, a water opening is provided at the housing 128 corresponding to the water passage 152. In this way, the water flow can enter the water heater only after it contacts the scale inhibitor in the storage cavity 160 to achieve the purpose of scale inhibition and scale inhibition.

In an alternative example, the water inlet valve assembly 10 may further include a filter screen 146. The filter screen 146 surrounds the peripheral wall of the casing 128 and at least partially coincides with the water passing hole 106. The filter screen 146 may partially surround the peripheral wall of the casing 128, that is, the filter screen 146 is provided at the inlet and / or outlet of the storage cavity 160 to filter coarse particles in the water flow. In addition, the filter screen 146 can also prevent scale inhibition The agent enters the inner liner, further improving the water quality entering the inner liner.

In other optional embodiments of the present application, as shown in FIG. 10 to FIG. 15, the closed end of the casing 128 is provided with an elastic member 166, and one end of the elastic member 166 stops against the inner end wall of the casing 128. The other end of the abutment rests on the slider 162 to provide thrust to the slider 162. 10, 12 and 14, the storage cavity 160 is filled with a sufficient scale inhibitor. In this state, the elastic member 166 (for example, a compression spring) is in a compressed state, and a thrust is applied to the slider 162. When the scale is reduced, the slider 162 moves in the axial direction of the storage cavity 160. When the scale inhibitor is almost consumed, the elastic force of the elastic member 166 will drive the slider 162 to reach a predetermined position to block the flow of the water passage 152, that is, to close the water outlet 156 of the casing 128. It can be understood that after the storage cavity 160 is filled with the scale inhibitor again, the elastic member 166 will return to the compressed state.

In other optional embodiments of the present application, the water inlet valve assembly 10 may include: a one-way stop valve 168. The one-way stop valve 168 is set in the water passage 152. If the water pressure on one side of the water passage 152 is greater than the water pressure on the other side, the one-way stop valve 168 is pushed open. At this time, the water passage 152 is guided. When the water pressure on one side of the water passage 152 is lower than the water pressure on the other side, the one-way stop valve 168 is closed to block the normal flow of the water passage 152. One side of the water passing channel 152 is in communication with the municipal natural water pipe, and the other side of the water passing channel 152 is in communication with the inner tank of the water heater. That is, only when one side of the water passage 152 is in communication with the municipal natural water pipe, and the water pressure in the municipal natural water pipe is greater than the water pressure of the water heater, the one-way shut-off valve 168 is opened to deliver natural water to the water heater's water tank. When the water pressure of the water heater's inner tank is greater than the water pressure in the municipal natural water pipe, the one-way shutoff valve 168 is not opened, thereby preventing the water in the water heater inner tank from flowing backward.

Further optionally, as shown in FIGS. 10 to 15, one side of the water inlet valve body 202 is provided with a pressure relief channel 158, and a pressure relief valve 170 is provided at a connection between the pressure relief channel 158 and the water passage 152. When the internal pressure is greater than a predetermined pressure, the pressure relief valve 170 is opened, and the pressure is released outward through the pressure relief passage 158. As shown in FIGS. 10 to 15, the pressure relief channel 158 is located on one side of the water inlet valve body 202, and the pressure relief channel 158 and the other side of the water passage 152 (as shown in the upper end of the water inlet valve body 202 in FIG. 10) ), And is not in communication with one side of the water passage 152 (such as the lower end of the water inlet valve body 202 in FIG. 10). In this way, when the pressure of the water heater is too high, part of the water in the water heater can be discharged through the pressure relief channel 158 , But will not flow back into the municipal natural water pipe, thereby avoiding cross-flow between the water in the water heater and the municipal natural water pipe.

In other embodiments of the present application, the water inlet valve assembly 10 may further include: a flow detection device 172, the flow detection device 172 is disposed in the water passage 152 and is connected to the main control board of the water heater. When the flow detection device 172 detects When the flow in the water channel 152 is zero, the main control board sends out a signal for adding the scale inhibitor, thereby prompting the user to add the scale inhibitor in time.

In still other embodiments of the present application, the water inlet valve assembly 10 may further include two electrodes 174, and the two electrodes 174 are respectively connected to the main control board of the water heater. The blocks 162 are in contact with the two electrodes 174 respectively to form a current loop. After receiving the current signal, the main control board sends out a signal for adding a scale inhibitor.

In some other embodiments of the present application, the LED lamp 176 is disposed between the two electrodes 174. When the slider 162 reaches the normal flow channel, the slider 162 contacts the two electrodes 174 to form a current loop. The LED lamp 176 lit up. In this way, when the user sees that the LED lamp 176 is illuminated, it can be clearly concluded that the scale inhibitor is very small, so that the scale inhibitor is added in time to ensure the normal and stable operation of the water heater.

The water inlet valve assembly 10 provided in some embodiments of the present application, in order to avoid the formation of scale that is difficult to remove on the inner wall of the water heater, before natural water enters the inner tank, the water inlet valve assembly 10 is used to preliminarily form scale-ionized ions in natural water through the water inlet valve assembly 10 Removal, thereby achieving the purpose of scale inhibition and scale inhibition of the water heater.

As shown in FIGS. 10 to 15, the water inlet valve assembly 10 may generally include: a water inlet valve body 202 and a scale inhibition device 124. The water inlet valve body 202 is formed with a water passage 152, and the water passage 152 has a water inlet. 154 and a water outlet 156, and a scale inhibition device 124 is disposed in the water passage 152. That is, the water inlet 154 of the water inlet valve body 202 is in communication with the municipal natural water system. After the water flows through the scale inhibition and suppression of the scale inhibition device 124, it enters the inner liner through the water outlet 156 of the water inlet valve body 202.

In other optional embodiments of the present application, the water inlet valve assembly 10 may include: a one-way stop valve 168. The one-way stop valve 168 is set in the water passage 152. If the water pressure on one side of the water passage 152 is greater than the water pressure on the other side, the one-way stop valve 168 is pushed open. At this time, the water passage 152 is guided. When the water pressure on one side of the water passage 152 is lower than the water pressure on the other side, the one-way stop valve 168 is closed to block the normal flow of the water passage 152. One side of the water passing channel 152 is in communication with the municipal natural water pipe, and the other side of the water passing channel 152 is in communication with the inner tank of the water heater. That is, only when one side of the water passing channel 152 is in communication with the municipal natural water pipe and the water pressure in the municipal natural water pipe is greater than the water pressure of the water heater, the one-way stop valve 168 is opened to deliver natural water to the water heater's water tank. When the water pressure of the water heater's inner tank is greater than the water pressure in the municipal natural water pipe, the one-way shutoff valve 168 is not opened, thereby preventing the water in the water heater inner tank from flowing backward.

In the description of the present application, the term "plurality" means two or more. Unless otherwise specifically defined, the directions or positional relationships indicated by the terms "upper" and "lower" are based on those shown in the drawings. The orientation or positional relationship is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, structure and operation in a specific orientation, so it cannot be understood as a limitation on this application; The terms "connected", "installed", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or through the middle. The media are indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In the description of this specification, the descriptions of the terms “one embodiment”, “some embodiments”, “specific embodiments” and the like mean that specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in this application In at least one embodiment or example. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, this application may have various modifications and changes. Any modification, equivalent replacement, or improvement made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

A scale inhibition device, including:

A shell and a scale inhibitor provided in the shell, the shell is in communication with the water passage, and a part of the shell located in the water passage is provided with a water hole, and the water hole is used for facing The scale inhibitor is released in the water passage.
The scale inhibitor according to claim 1, wherein:

The casing includes a protruding portion, one end of which is open, and the other end is provided with a shielding member. The protruding portion at least partially protrudes into the water channel, and a peripheral wall of the protruding portion is provided. The water hole.
The scale inhibitor according to claim 2, wherein:

The housing includes a handle portion, one end of which is closed, and the other end of which is open. The side wall of the water passage is provided with a mounting hole, and the handle portion is installed in the mounting hole through a detachable connection structure. on.
The scale inhibitor according to claim 3, wherein

An external thread is provided on an outer peripheral surface of the handle portion, and an internal thread screwed with the external thread is provided on a hole wall of the mounting hole;

A stopper protrusion is provided on an outer peripheral surface of the handle portion, and the stopper protrusion is in contact with an outer wall surface of the water passage;

A seal ring is provided on the outer sleeve of the handle portion, and the seal ring is in abutment with the hole wall of the mounting hole.
The scale inhibitor according to claim 3, wherein

A limiting ring rib is provided on an outer peripheral surface of the handle portion, and a limiting ring groove matching the limiting ring rib is provided on an inner peripheral surface of the protruding portion;

An anti-rotation rib is provided on the outer peripheral surface of the protruding portion, an inner wall of the water passage is correspondingly provided with an anti-rotation groove, and the anti-rotation rib is adapted to be mated with the anti-rotation groove.
The scale inhibitor according to claim 3, wherein

The protruding portion includes two ring-shaped skeletons arranged at intervals, and a plurality of strip-shaped skeletons connecting the two ring-shaped skeletons, and the interval between two adjacent strip-shaped skeletons constitutes the water passing hole;

A filter screen is also provided in the protruding portion, and the filter hole screen covers the water passing hole;

Limiting ribs are provided in the protruding portion, the limiting ribs extend along the axis of the protruding portion, and are arranged near the inner peripheral surface of the protruding portion, and the filter screen is arranged along the protruding portion. The peripheral wall extends, and the filter screen is located between the limiting rib and the inner surface of the protruding portion.
The scale inhibitor according to any one of claims 1 to 6, wherein:

The scale inhibition device further includes a magnetic rod, and the magnetic rod is disposed in the casing.
The scale inhibitor according to any one of claims 3 to 6, wherein:

The housing has a storage cavity communicating with the water passage, and the storage cavity is filled with the scale inhibitor;

The scale inhibition device further includes a slider, and the slider is provided in the storage cavity. As the scale inhibitor decreases, the slider gradually moves from the handle portion to the protruding portion until the The slider blocks the normal circulation of the water passage.
The scale inhibitor according to claim 8, wherein:

The housing is provided with an elastic member at one end of the handle portion, one end of the elastic member stops against the inner end wall of the handle portion, and the other end of the elastic member stops against the slider to A thrust is provided to the slider.
A water inlet valve assembly, including:

Water inlet valve body, the water inlet valve body includes a valve body and a valve core, the valve core is installed on the valve body, a peripheral wall of the valve body is provided with a mounting hole, and a water passage is formed in the valve body ;and

The scale inhibition device according to any one of claims 1 to 9, wherein the casing extends into the valve body from the mounting hole, and the casing is sealedly connected to the valve body, and the casing is located at the A part of the valve body is provided with a water passing hole, and the water passing hole is used to release a scale inhibitor to the water passing channel.
The water inlet valve assembly according to claim 10, wherein:

The casing is detachably connected to the water inlet valve body.
The water inlet valve assembly according to claim 10, wherein:

A pressure relief channel is provided on one side of the water inlet valve body, and a pressure relief valve is provided at the communication point between the pressure relief channel and the water passage. When the pressure in the water heater is greater than a predetermined pressure, the pressure relief valve is opened. Release pressure outward through the pressure relief channel.
The water inlet valve assembly according to claim 10, further comprising:

A one-way stop valve is provided in the water passage, and the water pressure on one side of the water passage is higher than the water pressure on the other side, and is guided through the water passage; When the water pressure on one side of the water passage is lower than the water pressure on the other side, the water passage is blocked.
The water inlet valve assembly according to claim 10, further comprising:

A flow detection device, which is disposed in the water passage and is connected to the main control board of the water heater. When the flow detection device detects that the flow in the water passage is zero, the main control board Signals the addition of scale inhibitors.
The water inlet valve assembly according to claim 10, further comprising:

Two electrodes, two of the electrodes are respectively connected to the main control board of the water heater, and when the slider reaches the normal flow path of blocking the water flow, the slider of the scale inhibition device contacts the two electrodes to form a current. Circuit, the main control board sends out a signal to add a scale inhibitor after receiving the current signal.
The water inlet valve assembly according to claim 15, further comprising:

An LED lamp, which is arranged between two of the electrodes, and when the slider reaches a normal flow path blocking the water flow, the slider is in contact with the two electrodes to form a current loop, and the LED The light is on.
A water heater includes:

An inner tank, which is provided with a water inlet;

The scale inhibition device according to any one of claims 1 to 9, which is installed at the water inlet; or

The water inlet valve assembly according to any one of claims 10 to 16, which is installed at the water inlet.