A foam barrier device for indirect evaporative chiller unit liquid level sensor
By designing a foam blocking device, the problem of foam interference in indirect evaporative cooling units was solved, achieving accurate liquid level measurement and making it suitable for various liquid level sensors.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU HUIHE DIGITAL ENERGY TECH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-26
AI Technical Summary
Liquid level sensors in indirect evaporative cooling units are subject to foam interference, leading to measurement deviations. Existing devices have limited sensitivity adjustment range and poor applicability, and cannot effectively eliminate foam interference.
Design a device that includes a foam barrier and auxiliary components. The foam barrier blocks the foam, ensuring free flow of liquid, while the auxiliary components stabilize the sensor position, thereby improving measurement accuracy.
It effectively prevents foam from contacting the sensor, improves the accuracy of liquid level measurement, ensures the normal operation of the sensor, and is suitable for various liquid level sensors.
Smart Images

Figure CN224419066U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field, specifically to a foam blocking device for a liquid level sensor in an indirect evaporative cooling unit. Background Technology
[0002] During liquid level measurement, foam formed on the liquid surface can significantly interfere with the normal operation of the liquid level sensor, leading to deviations in the measurement results. This problem is particularly prominent in indirect evaporative cooling units. Because the circulating spray water or circulating wet film water is exposed to the air for a long time, it is easy to mix with dust and impurities. During the liquid circulation process, a large amount of foam will be continuously generated. This foam will be misjudged as liquid by the liquid level sensor, thus seriously affecting the accuracy of liquid level measurement.
[0003] The existing indirect evaporative cooling unit liquid level sensor has a limited sensitivity adjustment range and cannot completely eliminate foam interference. Reducing the sensitivity may lead to a decrease in the measurement accuracy of the liquid level sensor, making it unable to accurately detect changes in liquid level. At the same time, it requires repeated adjustments for different liquid or foam characteristics, resulting in poor applicability.
[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content
[0005] In view of the problems in the related technologies, this utility model proposes a foam blocking device for a liquid level sensor in an indirect evaporative cooling unit, so as to overcome the above-mentioned technical problems existing in the existing related technologies.
[0006] Therefore, the specific technical solution adopted by this utility model is as follows:
[0007] A foam blocking device for a liquid level sensor in an indirect evaporative cooling unit includes a blocking component and an auxiliary component. The blocking component includes a foam blocking cover, a blocking part one, and a blocking part two. The auxiliary component includes an adjusting component and an installation component.
[0008] Furthermore, in order to better ensure the blocking effect, the blocking component includes opening one and opening two, which are respectively opened at both ends of the foam blocking cover, and blocking openings are provided around the foam blocking cover.
[0009] Furthermore, in order to better ensure the foam blocking effect, the second blocking component includes a first blocking plate and a second blocking plate. The first blocking plate and the second blocking plate are respectively set inside the blocking opening, and filter holes are opened at equal intervals on the first blocking plate and the second blocking plate.
[0010] Furthermore, in order to better ensure the adjustment effect, the adjustment component includes a fixed bracket, which is welded and fixedly installed on the inner wall of the foam barrier at equal intervals. Threaded holes are opened at equal intervals on one side of the fixed bracket, and a mounting bracket is provided on one side of one of the threaded holes.
[0011] Furthermore, in order to better ensure the adjustment and fixing effect, a second threaded hole is provided on one side of the mounting bracket. A bolt is installed inside the second threaded hole, and the bolt is threadedly connected inside the first threaded hole.
[0012] Furthermore, to better ensure the placement effect of the sensor, the mounting components include a mounting slot, which is opened on the mounting bracket, and the liquid level sensor is installed inside the mounting slot by a nut.
[0013] Furthermore, to better ensure the installation effect of the device, mounting plates are symmetrically arranged on the outer wall of the foam barrier, and the mounting plates are provided with connection holes.
[0014] The beneficial effects of this utility model are as follows: by the cooperation of the blocking component and the auxiliary component, foam can be effectively blocked to prevent foam from contacting the probe of the liquid level sensor, thereby improving the measurement accuracy. The blocking ports opened at equal intervals at the bottom of the side plate of the device ensure that the liquid flows freely and does not affect the normal operation of the liquid level sensor. Furthermore, the device has a simple structure, is easy to install, and is suitable for various liquid level sensors. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of a foam blocking device for a liquid level sensor in an indirect evaporative cooling unit according to an embodiment of the present invention.
[0017] Figure 2 This is a schematic diagram of the blocking component structure of a foam blocking device for a liquid level sensor in an indirect evaporative cooling unit according to an embodiment of the present invention.
[0018] Figure 3 This is a partial structural diagram of the blocking component of a foam blocking device for a liquid level sensor in an indirect evaporative cooling unit according to an embodiment of the present invention.
[0019] Figure 4 This is a schematic diagram of the auxiliary component structure of a foam blocking device for a liquid level sensor in an indirect evaporative cooling unit, according to an embodiment of the present invention.
[0020] In the picture:
[0021] 1. Blocking assembly; 2. Auxiliary assembly; 3. Foam barrier cover; 4. Opening one; 5. Opening two; 6. Blocking plate one; 7. Blocking plate two; 8. Filter through hole; 9. Fixing bracket; 10. Threaded hole one; 11. Mounting bracket; 12. Threaded hole two; 13. Bolt; 14. Mounting groove; 15. Liquid level sensor; 16. Mounting plate; 17. Blocking port. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Example 1:
[0024] like Figures 1-3 As shown, a foam blocking device for a liquid level sensor of an indirect evaporative cooling unit according to an embodiment of the present invention includes a blocking component 1 and an auxiliary component 2. The blocking component 1 includes a foam blocking cover 3, a blocking component one and a blocking component two. The foam blocking cover 3 is rectangular in shape and made of stainless steel. The outer wall of the foam blocking cover 3 is symmetrically provided with mounting plates 16. The mounting plates 16 have connecting holes for installing the foam blocking cover 3 on the indirect evaporative cooling unit. The specific installation method is a conventional existing technology and will not be described in detail.
[0025] The blocking component includes an opening 4 and an opening 5. The opening 4 and the opening 5 are respectively opened at both ends of the foam blocking cover 3. The opening 4 and the opening 5 are used to install the sensor and facilitate the liquid to enter the interior of the foam blocking cover 3 to ensure the liquid level monitoring effect. The foam blocking cover 3 is symmetrically provided with blocking ports 17 around its perimeter. There are two blocking ports 17, one of which is 30mm long and 3mm wide, and the other is 10mm long and 3mm wide.
[0026] The second blocking component includes a first blocking plate 6 and a second blocking plate 7. The first blocking plate 6 and the second blocking plate 7 are respectively installed inside the blocking opening 17. Filtering holes 8 are opened at equal intervals on the first blocking plate 6 and the second blocking plate 7. The specific diameter of the filtering holes 8 needs to be determined according to the actual specifications of the device. The specific installation method of the first blocking plate 6 and the second blocking plate 7 is the existing conventional technical means, so it will not be described in detail.
[0027] Example 2:
[0028] like Figure 1 , Figure 4 As shown, according to an embodiment of the present invention, a foam blocking device for a liquid level sensor in an indirect evaporative cooling unit includes an auxiliary component 2 comprising an adjustment component and an installation component. The adjustment component includes a fixed bracket 9, which is welded and fixedly disposed on the inner wall of the foam blocking cover 3 at equal intervals. Threaded holes 10 are provided at equal intervals on one side of the fixed bracket 9. An L-shaped mounting bracket 11 is provided on one side of one of the threaded holes 10. A threaded hole 12 is provided on one side of the mounting bracket 11. A bolt 13 is provided inside the threaded hole 12 for fixing and adjusting the mounting bracket 11. The bolt 13 is threadedly connected inside the threaded hole 10. The specifications of the bolt 13, threaded hole 10, and threaded hole 12 need to be determined according to the actual specifications of the device.
[0029] The mounting components include a mounting slot 14, which is an L-shaped arc groove for placing the liquid level sensor 15. The mounting slot 14 is opened on the mounting bracket 11. The liquid level sensor 15 is installed inside the mounting slot 14 by a nut. The liquid level sensor 15 is an existing conventional sensor, so it will not be described in detail. The specific model and specifications of the liquid level sensor 15 need to be selected and determined according to the actual specifications of the device.
[0030] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.
[0031] In summary, with the help of the above-mentioned technical solution of this utility model, during the operation of the indirect evaporative cooling unit, the circulating spray water or circulating wet film water is exposed to the air for a long time and mixes with dust and impurities. A large amount of foam is generated during liquid circulation. If these foams come into contact with the probe of the liquid level sensor 15, they will be misjudged as liquid, resulting in measurement deviation. This foam blocking device effectively solves this problem through the linkage of the blocking component 1 and the auxiliary component 2.
[0032] The foam baffle 3 in the baffle assembly 1 is installed on the indirect evaporative cooling unit. The mounting plates 16 symmetrically arranged on its outer wall are fixed to the unit through the connection holes. The foam baffle 3 is rectangular in shape and made of stainless steel. Openings 4 and 5 are opened at both ends for the installation of the liquid level sensor 15 and for liquid to enter into it to ensure the liquid level monitoring effect. The foam baffle 3 has two baffle openings 17 symmetrically opened around its perimeter. The two baffle openings 17 have a length of 30mm and a width of 3mm and a length of 10mm and a width of 3mm, respectively. The baffle plates 6 and 7 of the baffle assembly 2 are placed in them respectively, and filter holes 8 are opened at equal intervals. The hole diameter is determined according to the device specifications.
[0033] When liquid flows into the foam barrier 3, the filter holes 8 on the first barrier plate 6 and the second barrier plate 7 allow the liquid to flow freely, while the blocking port 17 effectively blocks the foam and prevents it from contacting the probe of the liquid level sensor 15, thereby improving the measurement accuracy.
[0034] The adjustment component in auxiliary component 2 ensures the relative position of the foam shield 3 and the liquid level sensor 15 is stable. The fixed bracket 9 is welded to the inner wall of the foam shield 3 at equal intervals, and threaded holes 10 are opened at equal intervals on one side. The mounting bracket 11 has an L-shaped structure, with a threaded hole 12 on one side and a bolt 13 inside. The bolt is threaded into the threaded hole 10. By adjusting the bolt 13, the position of the mounting bracket 11 can be changed, thereby adjusting the position of the liquid level sensor 15 inside the foam shield 3.
[0035] The mounting slot 14 of the mounting component is provided on the mounting frame 11. It is an arc-shaped slot with an L-shaped structure, used to place the liquid level sensor 15. The liquid level sensor 15 is fixed inside by a nut. The model and specifications of the liquid level sensor 15 are determined according to the actual specifications of the device and are existing conventional sensors.
[0036] In actual operation, the foam baffle 3 is first fixed to the indirect evaporative cooling unit using the mounting plate 16. Then, the position of the mounting bracket 11 is adjusted using the adjusting components, and the liquid level sensor 15 is placed in the mounting groove 14 and fixed with a nut. When liquid flows into the foam baffle 3, the liquid enters through the opening 4 or the opening 5. At the same time, the filter holes 8 on the baffle plate 6 and the baffle plate 7 allow the liquid to flow freely, while the blocking port 17 effectively blocks the foam. The liquid level sensor 15 monitors the liquid level in real time. Because the foam is blocked, the measurement accuracy is improved, ensuring the stable operation of the indirect evaporative cooling unit.
[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A foam barrier device for an indirect evaporative chiller unit liquid level sensor, comprising: It includes a blocking component (1) and an auxiliary component (2). The blocking component (1) includes a foam blocking cover (3), a blocking component one and a blocking component two. The auxiliary component (2) includes an adjustment component and an installation component.
2. The foam blocking device for a liquid level sensor in an indirect evaporative cooling unit according to claim 1, characterized in that, The blocking component includes an opening one (4) and an opening two (5). The opening one (4) and the opening two (5) are respectively opened at both ends of the foam blocking cover (3). The foam blocking cover (3) has blocking openings (17) around its perimeter.
3. A foam blocking device for a liquid level sensor in an indirect evaporative cooling unit according to claim 2, characterized in that, The second blocking component includes a first blocking plate (6) and a second blocking plate (7). The first blocking plate (6) and the second blocking plate (7) are respectively disposed inside the blocking port (17). Filter holes (8) are provided at equal intervals on the first blocking plate (6) and the second blocking plate (7).
4. A foam blocking device for a liquid level sensor in an indirect evaporative cooling unit according to claim 3, characterized in that, The adjustment component includes a fixed bracket (9), which is welded and fixedly installed on the inner wall of the foam barrier (3) at equal intervals. Threaded holes (10) are opened at equal intervals on one side of the fixed bracket (9), and a mounting bracket (11) is provided on one side of one of the threaded holes (10).
5. A foam blocking device for a liquid level sensor in an indirect evaporative cooling unit according to claim 4, characterized in that, The mounting bracket (11) has a threaded hole two (12) on one side, and a bolt (13) is provided inside the threaded hole two (12), and the bolt (13) is threadedly connected to the inside of the threaded hole one (10).
6. A foam blocking device for a liquid level sensor in an indirect evaporative cooling unit according to claim 5, characterized in that, The mounting components include a mounting slot (14), which is opened on the mounting bracket (11). A liquid level sensor (15) is installed inside the mounting slot (14) via a nut.
7. A foam blocking device for a liquid level sensor in an indirect evaporative cooling unit according to claim 1, characterized in that, The outer wall of the foam shield (3) is symmetrically provided with mounting plates (16), and the mounting plates (16) have connection holes.