Device and method for detecting concentration of bubble water

Abstract

The invention relates to a bubble water concentration detection device and a detection method, the bubble water concentration detection device comprises a shell, the interior of the shell is hollow, a cavity is formed, and the shell is provided with a water inlet and a water outlet which are communicated with the cavity; the detection sensor is restrained in the cavity and is used for directly or indirectly detecting the concentration of bubble water; the detection sensor is characterized by further comprising a movable part which is restrained in the cavity in a mode of reciprocating relative to the cavity so as to wipe the surface of the detection sensor. The device has the advantages that the surface of the detection sensor is wiped back and forth through the movable part, so that bubbles attached to the detection sensor are removed, the bubbles are prevented from being enriched on the surface of the detection sensor, and interference of the bubbles on the detection result of the detection sensor is eliminated. The two oppositely arranged electrode sensors are adopted as detection sensors, and the number of bubbles is calculated according to the resistance value of the detected water, so that the concentration of the current bubble water can be indirectly reflected, and the influence of impurities in the water on a detection result is eliminated.

Description

Technical Field

[0001] The present invention relates to the technical field of bubble water, and in particular to a bubble water concentration detection device and a detection method. Background Art

[0002] The bubble water technology dissolves gas in water in the form of extremely fine bubbles. The bubble water has a tiny size and can penetrate into narrow micropores, which can play an excellent cleaning role. At the same time, a large number of bubbles in the water dissolve and collide and break, generating high-energy ultrasonic waves, accompanied by a large number of oxygen negative ions. This kind of bubble water can play a role in sterilization and improving the cleaning effect.

[0003] In the prior art, the detection of bubble water concentration is usually indirectly reflected by water quality signals. For example, the Chinese invention patent "Bubble Generating Device and Household Appliance" with application number CN202110684743.5 (application publication number CN115504543A) discloses a bubble generating device, which includes a detection module, a control module and an electrolysis module. The detection module is used to detect the incoming water flow and water quality and output a flow signal and a water quality signal. The control module is used to generate a control signal according to the flow signal and the water quality signal. The electrolysis module is used to electrolyze the incoming water according to the control signal to form micro-nano bubble water of a preset concentration.

[0004] The device can detect the ion content (TDS value) in water through the TDS detection sensor, and control the output of different currents at both ends of the electrolysis module according to the ion content (TDS value) in the water, thereby outputting micro-nano bubble water of different concentrations. However, the above detection method has the following limitations: First, since the TDS detection sensor uses the available conductivity value to roughly understand the salt content in the solution, generally, the higher the conductivity, the higher the salt content, and the higher the TDS value, and the bubbles are easy to adhere to the surface of the TDS detection sensor during the detection process. When water is mixed with a certain amount of bubbles, the bubbles will occupy the volume of the water, thereby reducing the proportion of water per unit cross-sectional area and affecting the conductivity. Therefore, the bubbles will affect the conductivity, and then affect the detection results of the TDS detection sensor; second, the impurities in the water itself will affect the detection results of the TDS detection sensor.

[0005] Therefore, it is necessary to further improve the prior art. Summary of the invention

[0006] The first technical problem to be solved by the present invention is to provide a bubble water concentration detection device which can reduce the influence of bubbles on the detection results and improve the accuracy of the detection results in view of the above-mentioned prior art.

[0007] The second technical problem to be solved by the present invention is to provide a bubble water concentration detection device for the above-mentioned prior art, which can avoid the influence of impurities in the water on the detection results and improve the accuracy of the detection results.

[0008] The third technical problem to be solved by the present invention is to provide a detection method using the above-mentioned bubble water concentration detection device.

[0009] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a bubble water concentration detection device, comprising:

[0010] A shell body, wherein the shell body is hollow and has a chamber formed therein, and the shell body has a water inlet and a water outlet both of which are connected to the chamber, and the bubble water flows into the chamber from the water inlet and flows out from the water outlet;

[0011] A detection sensor, constrained in the chamber, for directly or indirectly detecting the concentration of the bubble water;

[0012] The invention is characterized in that it also includes:

[0013] The movable member is constrained in the chamber in a manner of being able to reciprocate relative to the chamber to wipe the surface of the detection sensor.

[0014] In order to achieve the installation of the detection sensor, at least one protrusion is circumferentially arranged on the inner wall of the shell, and all the protrusions and / or the inner wall of the shell together enclose a water passage, and at least one detection sensor is correspondingly arranged on each protrusion. The movable part is arranged to reciprocate along the extension direction of the water passage and can contact the surface of each detection sensor during the reciprocating movement.

[0015] To facilitate wiping of the outer surface of the detection sensor, each detection sensor protrudes from the outer surface of its corresponding protrusion, where the height of each detection sensor protruding from the outer surface of the corresponding protrusion is recorded as h, h≤H, and H is the maximum preset value that can ensure that the movable part can move during the transition from the outer surface of the protrusion to the outer surface of the detection sensor.

[0016] In order to eliminate the pressure difference during the movement of the movable part and facilitate the reciprocating movement of the movable part, the surface of each protrusion is also provided with a water guide groove opened along the length extension direction thereof.

[0017] In order to realize the reciprocating movement of the movable part, a driving part for driving the movable part to reciprocate is also included. The driving part can be a commonly used driving part such as a motor.

[0018] In order to make the structure simpler, preferably, the driving member is an elastic member acting on the movable member, so that the movable member always has a tendency to move toward the water inlet to wipe the surface of the detection sensor. In this way, the elastic member is compressed by the water flow, and then the movable member is driven to move toward the water inlet to wipe the surface of the detection sensor under the elastic force released by the elastic member, without the need for additional power, and the structure is simple and easy to implement.

[0019] In order to achieve the installation of the elastic part, the movable part is also provided with at least one guide column extending toward the water outlet, and the shell is provided with a mounting tube extending toward the guide column on the wall surface where the water outlet is located so that the guide column can be at least partially inserted and matched. The elastic part is a spring, and the spring is constrained in the mounting tube. The first end of the spring is against the bottom wall of the mounting tube, and the second end of the spring is against the bottom of the guide column.

[0020] In order to avoid damaging the detection sensor, preferably, the movable part is a piston, and the outer peripheral wall of the piston can fit with the peripheral wall of the water passage.

[0021] Preferably, the shell is tubular, and the water inlet and the water outlet are respectively arranged on the two end surfaces of the shell.

[0022] The technical solution adopted by the present invention to solve the above second technical problem is: the detection sensor is two electrode sensors arranged opposite to each other, the protrusions are two opposite to each other, and each electrode sensor is respectively arranged on one of the protrusions. The electrode sensor is used to detect the resistance of water. The resistance of water is not affected by impurities in the water, but only by the gas in the water, so that the impurities in the water can avoid affecting the detection results, so as to improve the accuracy of the detection results. Of course, the concentration of bubble water can also be tested by means such as capacitance changes that can avoid the influence of impurities in the water.

[0023] The technical solution adopted by the present invention to solve the third technical problem is: a detection method of the bubble water concentration detection device as described above, characterized in that it comprises the following steps:

[0024] Step 1: Power on the two electrode sensors, and allow the same volume of gas to flow into the water to form bubble water that flows into the chamber from the water inlet;

[0025] Step 2: The movable part can reciprocally wipe the surface of the electrode sensor to wipe off the bubbles attached to the surface of the electrode sensor, and detect the resistance R detected by the electrode sensor in real time;

[0026] Step 3: Calculate the number of bubbles N according to the following formula, which can indirectly reflect the current concentration of the bubble water;

[0027]

[0028] Where, L is the distance between the two electrode sensors, σ is the conductivity of water detected by the two electrode sensors, S is the cross-sectional area of ​​the two electrode sensors, is the cross-sectional area of ​​the bubble water.

[0029] Compared with the prior art, the advantages of the present invention are: by setting a movable part that can be constrained in the cavity in a reciprocating manner along the extension direction of the cavity, the movable part reciprocates to wipe the surface of the detection sensor, thereby removing the bubbles attached to the detection sensor, preventing the bubbles from being enriched on the surface of the detection sensor, and eliminating the bubbles interfering with the detection results of the detection sensor. In addition, two electrode sensors arranged opposite to each other are used as detection sensors to calculate the number of bubbles according to the resistance value of the detection water, thereby indirectly reflecting the current concentration of the bubble water, eliminating the influence of impurities in the water on the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the structure of a bubble water concentration detection device in an embodiment of the present invention;

[0031] Figure 2 for Figure 1 A cross-sectional view of

[0032] Figure 3 for Figure 1 Exploded diagram of

[0033] Figure 4 for Figure 1 Partial cross-sectional view (upper cover and lower cover omitted). DETAILED DESCRIPTION

[0034] The present invention is further described in detail below with reference to the accompanying drawings.

[0035] like Figures 1 to 4 As shown, the bubble water concentration detection device in this embodiment includes a housing 1, a detection sensor 2 and a movable part 3. The housing 1 is hollow inside to form a chamber 11, and the housing 1 has a water inlet 101 and a water outlet 102 both connected to the chamber 11. The bubble water flows into the chamber 11 from the water inlet 101 and flows out from the water outlet 102; the detection sensor 2 is constrained in the chamber 11, and is used to directly or indirectly detect the bubble water concentration; the movable part 3 is constrained in the chamber 11 in a manner that it can reciprocate relative to the chamber 11, and wipes the surface of the detection sensor 2.

[0036] like Figure 1 As shown, the housing 1 is tubular, and the water inlet 101 and the water outlet 102 are respectively arranged on the two end surfaces of the housing 1; Figure 2As shown, the shell 1 in this embodiment includes a cylindrical body 1b located in the middle section and an upper cover 1a and a lower cover 1c respectively located at both ends of the cylindrical body 1b, a water inlet 101 is opened in the center of the upper cover 1a, and a water outlet 102 is opened in the center of the lower cover 1c, and the upper cover 1a and the lower cover 1c are respectively detachably connected to the cylindrical body 1b, so as to utilize the assembly of the movable part 3.

[0037] At least one protrusion 12 is circumferentially arranged on the inner wall of the housing 1, and all the protrusions 12 and / or the inner wall of the housing 1 are enclosed together to form a water passage 10, and at least one detection sensor 2 is correspondingly arranged on each protrusion 12, and the movable member 3 is arranged to reciprocate along the extension direction of the water passage 10 and can contact the surface of each detection sensor 2 during the reciprocating movement. In addition, the movable member 3 is a piston, and the outer peripheral wall of the piston can fit the peripheral wall of the water passage 10; the surface of each protrusion 12 is also provided with a water guide groove 121 opened along the extension direction of its length, and the water guide groove 121 can reduce the pressure difference between the two ends of the piston, so that the piston can reciprocate and wipe the surface of the detection sensor 2.

[0038] Each detection sensor 2 protrudes from the outer surface of its corresponding protrusion 12, wherein the height of each detection sensor 2 protruding from the outer surface of the corresponding protrusion 12 is recorded as h, h≤H, and H is the maximum preset value that can ensure that the movable part 3 can move during the transition from the outer surface of the protrusion 12 to the outer surface of the detection sensor 2. In this embodiment, h=0.2mm, and by protruding the detection sensor 2 from the outer surface of the protrusion 12, the movable part 3 can better contact with the surface of the detection sensor 2, and the movement of the movable part 3 is not affected.

[0039] In this embodiment, the detection sensor 2 is two electrode sensors disposed opposite to each other, and the protrusions 12 are two protrusions disposed opposite to each other, and each electrode sensor is disposed on one of the protrusions 12 .

[0040] In addition, a driving member is included for driving the movable member 3 to move back and forth. The driving member can be driven by electric, pneumatic or other means. In order to reduce the use of power members, the driving member in this embodiment is an elastic member 4 acting on the movable member 3, so that the movable member 3 always has a tendency to move toward the water inlet 101 and wipe the surface of the detection sensor 2. Figure 2 and Figure 3 As shown, the movable member 3 in this embodiment is further provided with at least one guide column 31 ( Figure 3 There are two guide columns 31 in the middle), and the housing 1 is provided with a mounting pipe 13 (extending toward the guide column 31 on the wall surface where the water outlet 102 is located, so that the guide column 31 can be at least partially inserted and matched. Figure 3There are two mounting tubes 13, and each mounting tube 13 corresponds to a guide column 31 for insertion), the elastic member 4 is a spring, the spring is constrained in the mounting tube 13, the first end of the spring is against the bottom wall of the mounting tube 13, and the second end of the spring is against the bottom of the guide column 31.

[0041] The working process of the bubble water concentration detection device in this embodiment is as follows: when the bubble water flows from the water inlet 101 into the chamber 11, the movable part 3 moves toward the water outlet 102 under the push of the water flow, and the spring is compressed at the same time. When the elasticity of the spring is released, the movable part 3 is driven to move toward the water inlet 101 to wipe the surface of the detection sensor 2. Therefore, the surface of the detection sensor is wiped back and forth under the elastic force of the spring to prevent bubbles from gathering on the surface of the detection sensor and interfering with the detection result of the detection sensor.

[0042] The detection method using the bubble water concentration detection device in this embodiment includes the following steps:

[0043] Step 1: Power on the two electrode sensors, and allow the same volume of gas to flow into the water to form bubble water that flows into the chamber from the water inlet;

[0044] Step 2: The movable part can reciprocally wipe the surface of the electrode sensor to wipe off the bubbles attached to the surface of the electrode sensor, and detect the resistance R detected by the electrode sensor in real time;

[0045] Step 3: Calculate the number of bubbles N according to the following formula, which can indirectly reflect the current concentration of the bubble water;

[0046]

[0047] Where, L is the distance between the two electrode sensors, σ is the conductivity of water detected by the two electrode sensors, S is the cross-sectional area of ​​the two electrode sensors, is the cross-sectional area of ​​the bubble water.

[0048] In this embodiment, a certain voltage is passed through both ends of the electrode sensor, gas is used as a poor conductor of electricity, and water is used as a good conductor of electricity. At the same time, water has a certain conductivity. When water is mixed with a certain amount of bubbles, the bubbles occupy the volume of the water, thereby reducing the proportion of water per unit cross-sectional area, thereby affecting the conductivity; in addition, the bubbles appear approximately spherical in the water, which can be measured by Calculation: When the same volume of gas enters water, the smaller the bubble diameter, the larger the area occupied by the bubble. At the same time, according to the calculation method of resistance L is the distance between the two electrode sensors, σ is the conductivity of water, and A is the cross-sectional area of ​​the remaining water between the two electrode sensors after removing the bubbles, that is, A = SS 气, S is the cross-sectional area between the two electrode sensors. When the same volume of gas is dissolved in water, the smaller the bubble diameter, the larger the cross-sectional area S 气 The larger the area, the smaller the area of ​​A, which is ultimately reflected in the increase of resistance R; therefore Right now: As the number of bubbles N increases, the resistance also increases accordingly. Ultimately, the number of bubbles in the system can be determined by the size of the resistance. Since the gas volume is the same, the more bubbles there are, the smaller the bubble size is. Ultimately, the relationship between the bubble size and the cleaning effect is determined (the smaller the bubble size, the better the cleaning effect). Finally, the resistance is converted into the cleaning effect, and the cleaning effect of the bubble water can be obtained in real time and intuitively. When the same volume of gas is introduced into the water supply, the more refined bubbles there are, the smaller the bubble diameter is, the better the cleaning effect is, and the greater the resistance measured by the electrode sensor is.

Claims

1. A bubble water concentration detection device, comprising: A shell (1) is hollow inside and has a chamber (11). The shell (1) has a water inlet (101) and a water outlet (102) both of which are connected to the chamber (11). Bubble water flows into the chamber (11) from the water inlet (101) and flows out from the water outlet (102); A detection sensor (2), which is confined in the chamber (11) and is used to directly or indirectly detect the concentration of bubble water; The invention is characterized in that it also includes: The movable member (3) is constrained in the chamber (11) in a manner capable of reciprocating relative to the chamber (11) to wipe the surface of the detection sensor (2).

2. The bubble water concentration detection device according to claim 1, characterized in that: At least one protrusion (12) is circumferentially arranged on the inner wall of the shell (1); all the protrusions (12) and / or the inner wall of the shell (1) together enclose a water passage (10); at least one detection sensor (2) is correspondingly arranged on each protrusion (12); and the movable member (3) is arranged to reciprocate along the extension direction of the water passage (10) and can contact the surface of each detection sensor (2) during the reciprocating movement.

3. The bubble water concentration detection device according to claim 2, characterized in that: Each detection sensor (2) protrudes from the outer surface of its corresponding protrusion (12), wherein the height of each detection sensor (2) protruding from the outer surface of the corresponding protrusion (12) is recorded as h, h≤H, and H is a maximum preset value that can ensure that the movable part (3) can move during the process of transitioning from the outer surface of the protrusion (12) to the outer surface of the detection sensor (2).

4. The bubble water concentration detection device according to claim 3, characterized in that: The surface of each protrusion (12) is also provided with a water guide groove (121) opened along the length extension direction thereof.

5. The bubble water concentration detection device according to claim 1, characterized in that: It also includes a driving member for driving the movable member (3) to move back and forth.

6. The bubble water concentration detection device according to claim 5, characterized in that: The driving member is an elastic member (4) acting on the movable member (3), so that the movable member (3) always has a tendency to move toward the water inlet (101) to wipe the surface of the detection sensor (2).

7. The bubble water concentration detection device according to claim 6, characterized in that: The movable part (3) is also provided with at least one guide column (31) extending toward the water outlet (102); the housing (1) is provided with a mounting tube (13) extending toward the guide column (31) on a wall surface where the water outlet (102) is located so as to allow the guide column (31) to be at least partially inserted and matched; the elastic part (4) is a spring, which is constrained in the mounting tube (13); the first end of the spring abuts against the bottom wall of the mounting tube (13), and the second end of the spring abuts against the bottom of the guide column (31).

8. The bubble water concentration detection device according to claim 7, characterized in that: The movable part (3) is a piston, and the outer peripheral wall of the piston can fit with the peripheral wall of the water passage (10).

9. The bubble water concentration detection device according to claim 8, characterized in that: The shell (1) is tubular, and the water inlet (101) and the water outlet (102) are respectively arranged on the two end surfaces of the shell (1).

10. The bubble water concentration detection device according to claim 2, characterized in that: The detection sensor (2) is two electrode sensors arranged opposite to each other, the protrusions (12) are two protrusions arranged opposite to each other, and each electrode sensor is arranged on one of the protrusions (12) respectively.

11. A detection method of the bubble water concentration detection device according to claim 10, characterized in that The steps include: Step 1: Power on the two electrode sensors, and allow the same volume of gas to flow into the water to form bubble water that flows into the chamber from the water inlet; Step 2: The movable part can reciprocally wipe the surface of the electrode sensor to wipe off the bubbles attached to the surface of the electrode sensor, and detect the resistance R detected by the electrode sensor in real time; Step 3: Calculate the number of bubbles N according to the following formula, which can indirectly reflect the current concentration of the bubble water; Where, L is the distance between the two electrode sensors, σ is the conductivity of water detected by the two electrode sensors, S is the cross-sectional area of ​​the two electrode sensors, is the cross-sectional area of ​​the bubble water.

Images