CN210108618U

CN210108618U - Water leakage detection device

Info

Publication number: CN210108618U
Application number: CN201920938158.1U
Authority: CN
Inventors: 王行飞; 陈建华
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2020-02-21
Anticipated expiration: 2029-06-20

Abstract

The utility model provides a detection device leaks, includes casing, capillary and the detection sensor that leaks, and the casing has the cavity inner chamber, and the capillary setting just communicates the external cavity inner chamber with the casing in the casing bottom, and the detection sensor that leaks is installed in the cavity inner chamber of casing, still including filling the water absorption material in the cavity inner chamber of casing, this water absorption material respectively with leak detection sensor and capillary contact. The water absorption material is filled in the hollow inner cavity of the shell, when the environment is moist, the water quantity is generally less, the water is absorbed by the water absorption material after entering the inner cavity of the shell through the capillary tube, and the water does not move upwards to the position capable of triggering the water leakage detection sensor to alarm, so that the water in the moist environment is absorbed by the water absorption material but the water leakage detection sensor does not alarm, namely the water leakage detection sensor cannot falsely alarm due to the moist environment; the water absorption material can also protect the water leakage detection sensor and reduce the influence of air on the water leakage detection sensor; the structure is simple, the detection is accurate and timely, and the detection is reliable.

Description

Water leakage detection device

Technical Field

The utility model relates to a detection technical field, concretely relates to detection device leaks.

Background

When household appliances needing water, such as water purifiers, dish washers, water heaters and the like, are slowly popularized in families, the problem of water leakage often troubles people. Especially, the water purification product is limited by the special product structure and purification process, and the probability of water leakage is higher. According to market feedback, the complaint rate of users of the water leakage problem accounts for about 50 percent of the total complaint rate of users of the water purification product. Therefore, there is a need to improve the reliability of these products and reduce the risk of water leakage. Meanwhile, some water leakage coping strategies are also needed, for example, when water leakage occurs, the situation that water leakage occurs in a product can be effectively detected.

At present, the methods for detecting water leakage of the products on the market mainly comprise: detected by a flowmeter and detected by a water leakage detection sensor. Among them, a method of detecting feedback by a water leakage detection sensor is most commonly used. For example, chinese patent application No. CN201710525472.2 (publication No. CN107314867A) discloses "a water leakage detection device", which includes a capillary water detection sensor and an electrical signal detection circuit, wherein the capillary water detection sensor is placed on the ground, an output signal line of the capillary water detection sensor is connected to an input end of the electrical signal detection circuit, and an output end of the electrical signal detection circuit is connected to a signal input end of a single chip microcomputer; the capillary water detection sensor comprises a capillary tube, a metal wire, an insulating support body and a metal shell, wherein the capillary tube is embedded in the insulating support body, the metal wire is inserted into the capillary tube, the bottom end of the metal wire has a specified distance from the bottom opening of the capillary tube, and the other end of the metal wire is connected to an electric signal detection circuit; the metal shell is coated outside the insulating support body.

Above-mentioned patent can leak or ponding in the real-time detection room, and the device will send electrical signal when water exists, conveniently is applied to the suggestion of reporting to the police. However, the current water leakage detection sensor (including the capillary detection sensor in the above patent) often generates false alarm in the detection process. If the water leakage detection sensor misreports due to the humidity of the kitchen link; such as false alarms due to maintenance detection residues, etc.

Thus, the water leak detection device may also continue to be optimized.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem to foretell technical current situation, provide one kind and can reduce effectively because the environment is moist leads to the detection device that leaks of wrong report.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a detection device leaks, includes casing, capillary and the detection sensor that leaks, and the casing has the cavity inner chamber, and the capillary setting just communicates the external cavity inner chamber with the casing in the casing bottom, and the detection sensor that leaks is installed in the cavity inner chamber of casing, its characterized in that:

and the water absorption material is filled in the hollow inner cavity of the shell and is respectively contacted with the water leakage detection sensor and the capillary tube.

In order to support the shell, the device also comprises a support for supporting the shell, a clamping groove for supporting the shell is formed in the middle of the support, a through hole is formed in the bottom of the clamping groove, and the capillary tube penetrates through the through hole and then extends out of the support.

In order to avoid that the water leakage detection device also sends out a water leakage alarm under the condition of only a small amount of accumulated water, the height difference between the bottom end of the capillary tube and the bottom end of the bracket is H, and H is more than or equal to 1mm and less than or equal to 3 mm.

To facilitate maintenance of the water absorbing material and the water leak detection sensor, the housing includes a body and a cover that are detachably connected. After the water leakage alarm occurs, a user or after-sales maintenance personnel can remove the cover after the water leakage alarm is relieved, take out the water leakage detection sensor and the porous material in the hollow inner cavity of the shell, and perform drying treatment or replacement.

Preferably, to facilitate water absorption, the water absorbing material is a porous material.

In order to fill more water absorbing material so that the water leakage detecting device detects more accurately and protects the water leakage detecting sensor, the water absorbing material wraps the water leakage detecting sensor and fills the hollow inner cavity of the housing.

Preferably, the water leakage detection sensor is a probe type or printed circuit board type water leakage detection sensor.

Preferably, the inner wall of the capillary tube is cylindrical.

Preferably, the capillary has an internal diameter D, D not exceeding 1 mm.

Compared with the prior art, the utility model has the advantages of: the water leakage detection sensor is characterized in that a hollow inner cavity of the shell is filled with a water absorption material, the capillary tube is combined with the water absorption material, when the environment is moist, the water quantity is generally less, the water enters the inner cavity of the shell through the capillary tube and is absorbed by the water absorption material, and the water does not move upwards to a position where the alarm of the water leakage detection sensor can be triggered, so that the water in the moist environment is absorbed by the water absorption material but the water leakage detection sensor does not alarm, namely, the water leakage detection sensor cannot falsely alarm due to the moist environment, when a water leakage event occurs, the water quantity is relatively more, the water absorption material absorbs the water, and the water can move upwards to the water leakage sensor, the water leakage sensor detects a signal and sends out a water leakage alarm, so that the false alarm phenomenon of the water leakage detection; the water absorption material can also protect the water leakage detection sensor, reduce the influence of air on the water leakage detection sensor, reduce the phenomena of corrosion and rusting and prolong the service life of the water leakage detection sensor; the structure is simple, the detection is accurate and timely, the detection is reliable, and the program control is simple.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic view from another angle of FIG. 2;

FIG. 4 is a longitudinal cross-sectional view of FIG. 1;

fig. 5 is an exploded view of fig. 4.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 5, the water leakage detection device in this embodiment includes a housing 1 having a hollow inner cavity, and a holder 5 supporting the housing 1, and a water leakage detection sensor 3, a water absorbent 4, and a capillary tube 2 are provided in the hollow inner cavity of the housing 1 from top to bottom.

The housing 1 comprises a detachably connected body 11 and a cover 12.

The capillary tube 2 is arranged at the bottom of the shell 1 and is communicated with the outside and the hollow inner cavity of the shell 1, the height difference between the bottom end of the capillary tube 2 and the bottom end of the bracket 5 is H (see figure 4), and H is more than or equal to 1mm and less than or equal to 3 mm. Preferably, the inner wall of the capillary 2 is cylindrical, and the inner diameter of the capillary 2 is D (see fig. 4), and D is not more than 1 mm. The capillary 2 may be provided in plural and at different intervals, so that the detection range can be effectively expanded.

The middle part of the bracket 5 is provided with a clamping groove for supporting the shell 1, the bottom of the clamping groove is provided with a through hole 51, and the capillary tube 2 passes through the through hole 51 and then extends out of the bracket 5.

The water leakage detection sensor 3 is installed in the hollow inner cavity of the shell 1, and the water leakage detection sensor 3 is a probe type or printed circuit board type water leakage detection sensor. The water leakage detection sensor 3 may be provided in plurality to improve detection sensitivity.

A water absorbing material 4 is filled in the hollow inner cavity of the housing 1, the water absorbing material 4 is in contact with the water leakage detecting sensor 3 and the capillary tube 2, respectively, and preferably, the water absorbing material 4 wraps the water leakage detecting sensor 3. The water absorbing material 4 may be a porous material such as cotton, wool, paper, a polymer material, or the like.

The water leakage detection device of the embodiment has the following working principle:

inserting the capillary tube 2 into the through hole 51 of the holder 5 while the housing 1 is supported on the holder 5, placing the water absorbing material 4 into the hollow inner cavity of the housing 1, and placing the water leakage detecting sensor 3 into the water absorbing material 4;

when the environment is wet, the water quantity is generally less, the water enters the hollow inner cavity of the shell 1 through the capillary tube 2 and is absorbed by the water absorbing material 4, and the water does not move upwards to the position where the water leakage detection sensor 3 can be triggered to alarm, so that the water in the wet environment is absorbed by the water absorbing material and stored in the hollow inner cavity of the shell 1, but the water leakage detection sensor 3 does not alarm, namely, the water leakage detection sensor 3 cannot be mistakenly reported due to the wet environment;

when a water leakage event occurs, the water quantity is relatively large, the water absorbing material 4 absorbs water, and when the water can move upwards to the water leakage detection sensor 3, the water leakage detection sensor 3 detects a signal and sends out a water leakage alarm;

when maintenance is required, the cover 12 is opened, and the water absorbing material 4 and the water leakage detection sensor 3 in the hollow cavity of the housing 1 are taken out for maintenance.

Claims

1. The utility model provides a detection device leaks, includes casing (1), capillary (2) and leaks detection sensor (3), and casing (1) has the cavity inner chamber, and capillary (2) set up in casing (1) bottom and the cavity inner chamber of intercommunication external and casing (1), and the detection sensor (3) that leaks is installed in the cavity inner chamber of casing (1), its characterized in that:

the water-absorbing material is characterized by further comprising a water-absorbing material (4) filled in the hollow inner cavity of the shell (1), wherein the water-absorbing material (4) is respectively in contact with the water leakage detection sensor (3) and the capillary tube (2).

2. The water leak detection apparatus according to claim 1, wherein: the support is characterized by further comprising a support (5) used for supporting the shell (1), a clamping groove for supporting the shell (1) is formed in the middle of the support (5), a through hole (51) is formed in the bottom of the clamping groove, and the capillary tube (2) penetrates through the through hole (51) and then extends out of the support (5).

3. The water leak detection apparatus according to claim 2, wherein: the height difference between the bottom end of the capillary tube (2) and the bottom end of the bracket (5) is H, and H is more than or equal to 1mm and less than or equal to 3 mm.

4. The water leak detection apparatus according to claim 1, wherein: the housing (1) comprises a body (11) and a cover (12) which can be detachably connected.

5. The water leak detection apparatus according to claim 1, wherein: the water absorbing material (4) is a porous material.

6. The water leak detection apparatus according to claim 1, wherein: the water absorption material (4) wraps the water leakage detection sensor (3) and fills the hollow inner cavity of the shell (1).

7. The water leak detection apparatus according to claim 1, wherein: the water leakage detection sensor (3) is a probe type or printed circuit board type water leakage detection sensor.

8. The water leak detection apparatus according to claim 1, wherein: the inner wall of the capillary tube (2) is cylindrical.

9. The water leak detection apparatus according to claim 8, wherein: the inner diameter of the capillary tube (2) is D, and D is not more than 1 mm.