Ultrasonic cleaning device, ultrasonic cleaning control method and analyzer

Abstract

The invention is suitable for the technical field of medical equipment, and provides an ultrasonic cleaning device, an ultrasonic cleaning control method and an analyser, the ultrasonic cleaning device comprises a main shell and a cleaning cabin, one end of the cleaning cabin is provided with a needle inlet used for inserting a needle, the other end of the cleaning cabin is connected with the main shell, and an inner cavity of the cleaning cabin is communicated with the needle inlet and an inner cavity of the main shell; an ultrasonic transducer is arranged on the main shell, and a vibration starting part of the ultrasonic transducer is located on a communicating passage of the inner cavity of the cleaning cabin and the inner cavity of the main shell; an ultrasonic cleaning position is arranged in an inner cavity of the cleaning cabin; the ultrasonic cleaning position and the vibration starting part of the ultrasonic transducer are arranged in a staggered mode in the vertical direction. The vibration starting part of the ultrasonic transducer can be in direct contact with liquid, the ultrasonic cleaning effect is good, meanwhile, the ultrasonic cleaning position and the vibration starting part of the ultrasonic transducer are arranged in a staggered mode in the vertical direction, the inner wall of the sampling needle can be washed in the cleaning bin, the cleaning efficiency is high, and the cleaning effect is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical equipment, and in particular relates to an ultrasonic cleaning device, an ultrasonic cleaning control method and an analyzer. Background Art

[0002] An analyzer is an instrument used to test samples. During the testing process, the sample needs to be transferred from the sample tube to the reaction tube through a sampling needle. The sampling needle is contaminated by the sample when transferring the sample and needs to be cleaned with a cleaning device.

[0003] Ultrasonic cleaning devices are currently a commonly used cleaning device. In existing ultrasonic cleaning devices, if high-pressure water is used to clean the inner wall while ultrasonic cleaning is performed in the cleaning chamber, the high-pressure water sprayed from the sampling needle will damage the ultrasonic transducer. Therefore, the sampling needle needs to be cleaned with ultrasonic cleaning on the outer wall of the sampling needle in the cleaning chamber first, and then transferred to the drain position of the main shell and the inner wall of the sampling needle is cleaned with high-pressure water. The two cleaning methods need to be performed in sequence, the cleaning time is long, and the cleaning effect is poor. Summary of the Invention

[0004] The invention provides an ultrasonic device, aiming to solve the problem in existing ultrasonic cleaning devices that ultrasonic cleaning and inner wall cleaning are performed sequentially, the cleaning time is long, and the cleaning effect is poor.

[0005] The present invention is achieved by an ultrasonic cleaning device comprising:

[0006] A main shell and a cleaning chamber, wherein one end of the cleaning chamber is provided with a needle entry port for inserting a needle, and the other end is connected to the main shell, and the inner cavity of the cleaning chamber communicates with the needle entry port and the inner cavity of the main shell;

[0007] An ultrasonic transducer is provided on the main shell, and a vibration-generating portion of the ultrasonic transducer is located on a communication path between the inner cavity of the cleaning chamber and the inner cavity of the main shell;

[0008] The inner cavity of the cleaning cabin is provided with an ultrasonic cleaning position;

[0009] The ultrasonic cleaning position and the vibration-generating portion of the ultrasonic transducer are staggered in the vertical direction.

[0010] Optionally, the distance between the cleaning position and the bottom of the inner cavity of the main shell is greater than or equal to 20 mm.

[0011] Optionally, the horizontal distance between the vibration-generating part of the ultrasonic transducer and the cleaning position is greater than or equal to 3 mm.

[0012] Optionally, a liquid discharge port and a liquid inlet connected to the inner cavity of the main shell are respectively provided on the main shell, and the liquid discharge port is connected to the bottom of the inner cavity of the main shell.

[0013] Optionally, a ring wall surrounding the cleaning chamber extends from the main shell to form a waste liquid tank;

[0014] The shell is also provided with a waste liquid port connected to the waste liquid tank.

[0015] Optionally, the distance between the cleaning position and the bottom of the inner cavity of the main housing is positively correlated with the pressure of the inner wall flushing, specifically:

[0016] P=A×L

[0017] Wherein, P is the pressure of inner wall flushing;

[0018] L is the distance between the cleaning position and the bottom of the inner cavity of the main housing;

[0019]

[0020] Where, ρ is the density of cleaning water;

[0021] S is the cross-sectional area of ​​the sampling needle outlet;

[0022] v0 is the speed of the cleaning water flowing out of the sampling needle;

[0023] v1 is the speed at which the cleaning water impacts the bottom of the inner cavity of the main housing;

[0024] Δt is the time from when the cleaning water flows out from the sampling needle to when it hits the bottom of the inner cavity of the main housing.

[0025] The present invention also provides an ultrasonic cleaning control method, which is applied to the above-mentioned ultrasonic cleaning device, and the control method includes:

[0026] introducing a cleaning medium into the inner cavity of the cleaning chamber;

[0027] Control the sampling needle to reach the ultrasonic cleaning position;

[0028] Turn on the ultrasonic transducer and start flushing the inner wall of the sampling needle.

[0029] Optionally, the cleaning medium includes: cleaning agent or cleaning water.

[0030] Optionally, the control method further includes:

[0031] Discharging the cleaning medium from the inner cavity of the cleaning chamber;

[0032] Introducing cleaning water into the inner cavity of the cleaning chamber so that the cleaning water flows out from the needle inlet;

[0033] The cleaning water in the inner cavity of the main shell and the inner cavity of the cleaning chamber is drained.

[0034] Optionally, after draining the waste liquid in the cleaning chamber and before introducing cleaning water into the cleaning chamber so that the cleaning water flows out from the needle inlet, the method further includes:

[0035] Cleaning water is introduced into the inner cavity of the main shell to flush the inner cavity of the main shell.

[0036] The present invention also provides an analyzer, comprising a sampling needle and the above-mentioned ultrasonic cleaning device, wherein the sampling needle is connected to a switch valve and a power pump.

[0037] The beneficial effects achieved by the present invention are that, because the vibration-generating portion of the ultrasonic transducer is disposed in the communication path between the inner cavity of the cleaning chamber and the inner cavity of the main housing, the vibration-generating portion of the ultrasonic transducer is immersed in the cleaning medium, resulting in a good ultrasonic cleaning effect. Furthermore, the ultrasonic cleaning position and the vibration-generating portion of the ultrasonic transducer are vertically offset, preventing liquid discharged from the sampling end of the sampling needle from directly impacting the vibration-generating portion of the ultrasonic transducer. This allows the sampling needle to flush the inner wall within the cleaning chamber without the need to transfer the sampling needle, resulting in high cleaning efficiency. Furthermore, ultrasonic cleaning and inner wall flushing can be performed simultaneously, achieving a good cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of the ultrasonic cleaning device provided by the present invention;

[0039] Figure 2 This is a cross-sectional view of the internal structure of the ultrasonic cleaning device provided by the present invention;

[0040] Figure 3 This is another cross-sectional view of the internal structure of the ultrasonic cleaning device provided by the present invention;

[0041] Figure 4 1 is a flow chart of an ultrasonic cleaning control method provided in a tenth embodiment of the present invention;

[0042] Figure 5 1 is a flow chart of an ultrasonic cleaning control method provided in the eleventh embodiment of the present invention;

[0043] Figure 6 1 is a flow chart of an ultrasonic cleaning control method provided in the eleventh embodiment of the present invention;

[0044] Figure 7 1 is a schematic diagram of the liquid connection of the analyzer provided by the present invention;

[0045] Figure 8 It is a disassembly schematic diagram of another ultrasonic cleaning device provided by the present invention.

[0046] Description of reference numerals:

[0047] 100. Ultrasonic cleaning device; 101. Main housing; 1011. Enclosure; 1012. Inner cavity of main housing; 102. Cleaning chamber; 1021. Needle inlet; 1022. Inner cavity of cleaning chamber; 103. Ultrasonic transducer; 1031. Vibration generating unit; 104. Liquid drain port; 105. Liquid inlet port; 106. Waste liquid tank; 107. Waste liquid port;

[0048] 200. Analyzer; 201. Sampling needle; 202. Switch valve; 203. Power pump; 204. Cleaning pool. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention. In addition, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0051] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, or mutual communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0052] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will appreciate the application of other processes and / or the use of other materials.

[0053] In the present invention, since the ultrasonic transducer's vibration-generating portion is disposed in the communication path between the inner cavity of the cleaning chamber and the inner cavity of the main housing, the ultrasonic transducer's vibration-generating portion is immersed in the cleaning medium, resulting in a good ultrasonic cleaning effect. Furthermore, the ultrasonic cleaning position and the ultrasonic transducer's vibration-generating portion are vertically offset, preventing liquid discharged from the sampling end of the sampling needle from directly impacting the vibration-generating portion of the ultrasonic transducer. This allows the sampling needle to flush the inner wall within the cleaning chamber without the need to transfer the sampling needle, resulting in high cleaning efficiency. Furthermore, ultrasonic cleaning and inner wall flushing can be performed simultaneously, achieving a good cleaning effect.

[0054] Example 1

[0055] like Figures 1 to 3 as well as Figure 8 As shown, this embodiment provides an ultrasonic cleaning device 100, comprising:

[0056] The main housing 101 and the cleaning chamber 102, one end of the cleaning chamber 102 is provided with a needle inlet 1021 for inserting a needle, and the other end is connected to the main housing 101, and the inner cavity 1022 of the cleaning chamber connects the needle inlet 1021 with the inner cavity 1012 of the main housing;

[0057] An ultrasonic transducer 103 is provided on the main housing 101, and a vibration generating portion 1031 of the ultrasonic transducer 103 is located on the communication path between the inner cavity 1022 of the cleaning chamber and the inner cavity 1012 of the main housing;

[0058] The inner cavity 1022 of the cleaning chamber is provided with an ultrasonic cleaning position;

[0059] The ultrasonic cleaning position and the vibration generating portion 1031 of the ultrasonic transducer 103 are staggered in the vertical direction.

[0060] Ultrasonic transducer 103 is a device that converts electromagnetic energy into mechanical energy (acoustic energy). It is typically made of piezoelectric ceramics or other magnetostrictive materials. The piezoelectric effect of the material converts electrical signals into mechanical vibrations. Ultrasonic transducer 103 can be used for ultrasonic cleaning. The ultrasonic waves generated by ultrasonic transducer 103 act directly and indirectly on the liquid and dirt through cavitation, acceleration, and direct flow in the liquid, dispersing, emulsifying, and exfoliating the dirt layer, achieving the cleaning effect.

[0061] The needle inlet 1021, the inner cavity 1022 of the cleaning chamber, and the inner cavity 1012 of the main housing are connected. The main housing 101 is provided with an ultrasonic transducer 103, and the vibration-generating portion 1031 of the ultrasonic transducer 103 is located in the communication path between the inner cavity 1022 of the cleaning chamber and the inner cavity 1012 of the main housing. When the inner cavity 1022 of the cleaning chamber and the inner cavity 1012 of the main housing are both filled with liquid, the vibration-generating portion 1031 of the ultrasonic transducer 103 is immersed in the liquid. When the ultrasonic transducer 103 is in operation, it generates cavitation in the liquid in both the inner cavity 1022 of the cleaning chamber and the inner cavity 1012 of the main housing.

[0062] A sampling needle is used to collect samples or reagents. It's a hollow needle with a connection end at one end for connecting to a device and a sampling end at the other end for contact with the sample or reagent. The device at the connection end can provide positive or negative pressure to the needle, allowing it to collect or expel the sample or reagent. The device can also provide a cleaning fluid to the needle, which flows through the hollow needle tube to clean the inner wall.

[0063] The inner cavity 1022 of the cleaning chamber is provided with an ultrasonic cleaning position, which is the position where the sampling end of the sampling needle is located during cleaning. Specifically, the sampling needle can be made to reach the ultrasonic cleaning position by means of a positioning structure or path planning. The sampling needle enters the inner cavity 1022 of the cleaning chamber from the needle inlet 1021 at one end of the cleaning chamber 102 and reaches the ultrasonic cleaning position. When ultrasonic cleaning is performed, the liquid in the cleaning chamber 102 will immerse the sampling end of the sampling needle located at the ultrasonic cleaning position, and the ultrasonic transducer 103 is turned on. The cavitation effect, acceleration effect and straight flow effect of ultrasonic waves in the liquid can be used to peel off the stains on the sampling needle, thereby achieving the purpose of cleaning.

[0064] Typically, when cleaning the inner wall of the sampling needle 201, a device connected to the connection end injects a cleaning fluid into the needle tube through the connection end, and the cleaning fluid is discharged from the sampling end. The cleaning fluid can be water or a liquid containing a detergent. To clean the inner wall of the sampling needle 201, a high hydraulic pressure is usually applied. The impact of the liquid cleans the inner wall of the sampling needle 201, and therefore, the impact force of the liquid discharged from the sampling end of the sampling needle 201 is relatively large.

[0065] The sampling needle is kept vertically, with the sampling end located below the connection end, to facilitate planning the movement path of the sampling needle and avoid collisions with other equipment. The ultrasonic cleaning position and the vibration-generating portion 1031 of the ultrasonic transducer 103 are vertically offset, meaning that the vertical projections of the sampling needle 201 and the vibration-generating portion 1031 of the ultrasonic transducer 103 do not overlap when the ultrasonic cleaning position is in place. This prevents liquid discharged from the sampling end from directly impacting the vibration-generating portion 1031 of the ultrasonic transducer 103 when cleaning the inner wall of the sampling needle 201, thereby preventing damage to the vibration-generating portion 1031 of the ultrasonic transducer 103.

[0066] It can be understood that the "vertical direction" described in this embodiment refers to a vertical direction compared to the horizontal direction, which can be perpendicular to the horizontal direction, or have an inclination angle greater than 85° and less than 90° relative to the horizontal direction.

[0067] The present invention disposes the vibration-generating portion 1031 of the ultrasonic transducer 103 on the connecting passage between the inner cavity 1022 of the cleaning chamber and the inner cavity 1012 of the main shell, so that the vibration-generating portion 1031 of the ultrasonic transducer 103 is immersed in the cleaning medium, achieving a good ultrasonic cleaning effect. At the same time, the ultrasonic cleaning position and the vibration-generating portion 1031 of the ultrasonic transducer 103 are vertically offset, preventing the liquid discharged from the sampling end of the sampling needle 201 from directly impacting the vibration-generating portion 1031 of the ultrasonic transducer 103, allowing the sampling needle 201 to be flushed within the cleaning chamber 102 without having to transfer the sampling needle 201, resulting in high cleaning efficiency. Moreover, ultrasonic cleaning and inner wall flushing can be performed simultaneously, achieving a good cleaning effect.

[0068] Example 2

[0069] Based on the first embodiment, the distance between the cleaning position and the bottom of the inner cavity 1012 of the main shell is greater than or equal to 20 mm.

[0070] Because the ultrasonic cleaning position is vertically offset from the vibration-generating portion 1031 of the ultrasonic transducer 103, the vertical projection of the ultrasonic cleaning position falls onto the bottom of the inner cavity 1012 of the main housing. This means that the cleaning fluid discharged from the sampling end of the sampling needle 201 located at the ultrasonic cleaning position impacts the bottom of the inner cavity 1012 of the main housing. When flushing the inner wall of the sampling needle 201, the cleaning fluid is discharged from the sampling end of the sampling needle 201 at a relatively high flow rate. The discharged water flow has a relatively high pressure and flow rate (typically, the pressure can reach 280kPa to 320kPa, and the flow rate can reach 3.24m / s to 4.42m / s). The closer the bottom of the inner cavity 1012 of the main housing is to the sampling end, the greater the impact force of the water flow it is subjected to.

[0071] The distance between the cleaning position and the bottom of the inner cavity 1012 of the main shell is greater than or equal to 20 mm to avoid the water flow discharged from the sampling end impacting the bottom of the inner cavity 1012 of the main shell due to the distance being too short, causing damage to the bottom of the inner cavity 1012 of the main shell or water backwash, causing damage to the sampling needle 201.

[0072] Example 3

[0073] On the basis of the second embodiment, the horizontal distance between the vibration-generating portion 1031 of the ultrasonic transducer 103 and the cleaning position is greater than or equal to 3 mm.

[0074] During installation or use of the sampling needle 201 , the sampling needle 201 cannot maintain a completely vertical state, and may have a very small deflection angle (0.05° to 0.2°). This deflection angle cannot be detected by the naked eye, and thus cannot be adjusted in time.

[0075] The horizontal distance between the outer edge of the vibration-generating portion 1031 of the ultrasonic transducer 103 and the cleaning position is greater than or equal to 3 mm, to prevent the cleaning liquid discharged from the sampling end from impacting the vibration-generating portion 1031 of the ultrasonic transducer 103 when the sampling needle 201 is at an angle in the vertical direction.

[0076] Example 4

[0077] On the basis of the first embodiment, a liquid discharge port 104 and a liquid inlet 105 communicating with the inner cavity of the main housing 101 are respectively provided on the main housing 101 , and the liquid discharge port 104 communicates with the bottom of the inner cavity of the main housing 101 .

[0078] The drain port 104 and the inlet port 105 are each connected to the inner cavity 1012 of the main housing, with the drain port 104 connected to the bottom of the inner cavity of the main housing 101. The inlet port 105 is used to fill liquid into the inner cavity 1012 of the main housing and the inner cavity 1022 of the cleaning chamber, while the drain port 104 is used to drain liquid from the inner cavities 1012 and 1022 of the main housing. Since the drain port 104 is connected to the bottom of the inner cavity of the main housing 101, it facilitates the complete drainage of liquid from the inner cavity 1012 of the main housing, preventing the accumulation of liquid in the inner cavity 1012 of the main housing, the accumulation of contaminants, and the contamination of the pool of the cleaning chamber 102, further ensuring a more effective cleaning effect.

[0079] Example 5

[0080] like Figure 1 As shown, based on the first embodiment, a ring wall 1011 surrounding the cleaning chamber 102 is extended from the main shell 101 to form a waste liquid tank 106;

[0081] The housing is further provided with a waste liquid port 107 connected to the waste liquid tank 106 .

[0082] In this embodiment, an annular wall 1011 extends from the main housing 101 in a direction aligned with the needle inlet 1021. The extended annular wall 1011 forms a waste liquid tank 106, within which the cleaning chamber 102 is located. A waste liquid port 107 is provided at the bottom of the waste liquid tank 106, communicating with the waste liquid tank 106. Liquid within the waste liquid tank 106 can be discharged through the waste liquid port 107.

[0083] Example 6

[0084] Based on the first embodiment, the distance between the cleaning position and the bottom of the inner cavity 1012 of the main housing is positively correlated with the pressure of the inner wall flushing, specifically:

[0085] P=A×L

[0086] Wherein, P is the pressure of inner wall flushing;

[0087] L is the distance between the cleaning position and the bottom of the inner cavity 1012 of the main housing;

[0088]

[0089] Where, ρ is the density of cleaning water;

[0090] S is the cross-sectional area of ​​the water outlet of the sampling needle 201;

[0091] v0 is the speed of the cleaning water flowing out of the sampling needle 201;

[0092] v1 is the speed at which the cleaning water impacts the bottom of the inner cavity 1012 of the main housing;

[0093] Δt is the time from when the cleaning water flows out of the sampling needle 201 to when it hits the bottom of the inner cavity 1012 of the main housing;

[0094] The above-mentioned ρ, S, v0, v1, and △t can all be measured through experiments.

[0095] According to the momentum theorem:

[0096] -F×△t=mv1-mv2

[0097] Wherein, F is the impact force of the cleaning water hitting the bottom of the inner cavity 1012 of the main housing;

[0098] And m=ρ×S×L=ρ×S×v0×Δt

[0099] Substitute m and simplify:

[0100]

[0101] According to laboratory verification, the impact force of the cleaning water on the bottom of the inner cavity 1012 of the main shell is approximately equal to the pressure of the inner wall flushing.

[0102]

[0103] When the liquid flows, the flow velocity is not 0, and the liquid with velocity has an impact force, and the direction of the impact force is consistent with the direction of the liquid velocity. The greater the liquid flow velocity, the greater the impact force. The liquid flows from the liquid inlet 105 into the inner cavity 1012 of the main shell or flows from the liquid inlet 105 through the inner cavity 1012 of the main shell into the inner cavity 1022 of the cleaning chamber. The direction of the liquid inlet 105 is the velocity direction of the flowing liquid. The opening of the liquid inlet 105 is toward the ultrasonic transducer 103, that is, the liquid flowing from the liquid inlet 105 is toward the ultrasonic transducer 103, and the direction of the impact force of the liquid is toward the ultrasonic transducer 103. The impact force when the liquid flows in helps to clean the ultrasonic transducer 103 and avoid deposition on the surface of the ultrasonic transducer 103, thereby affecting the ultrasonic effect.

[0104] Example 7

[0105] like Figure 4 FIG. 1 is a flow chart of an ultrasonic cleaning control method according to an embodiment of the present invention, the method comprising the following steps:

[0106] S101, introducing a cleaning medium into the inner cavity 1022 of the cleaning chamber;

[0107] S102, controlling the sampling needle 201 to extend into the ultrasonic cleaning position;

[0108] S103 , turning on the ultrasonic transducer 103 and starting the flushing of the inner wall of the sampling needle.

[0109] In this embodiment, the order of step S101 and step S102 can be exchanged without affecting the implementation of the method.

[0110] In step S101 , a cleaning medium is introduced into the inner cavity 1022 of the cleaning chamber. The cleaning medium is a liquid, which can be cleaning water (such as purified water, deionized water) or a cleaning liquid (a solution containing a cleaning agent), so that the cleaning medium fills the inner cavity 1022 of the cleaning chamber.

[0111] In step S102 , the sampling needle 201 is controlled to extend into the cleaning chamber 102 and reach the cleaning position, and the portion of the sampling needle 201 that needs to be cleaned is immersed below the liquid level of the cleaning medium.

[0112] In step S103, ultrasonic transducer 103 is activated, and its vibration generating unit 1031 emits ultrasonic waves. The cavitation, acceleration, and direct flow of the ultrasonic waves in the liquid directly and indirectly affect the liquid and dirt on the sampling needle, dispersing, emulsifying, and exfoliating the dirt layer on the sampling needle, thereby achieving the cleaning purpose. Flushing the inner wall of the sampling needle is also activated. The device connected to the connection end injects cleaning water into the needle tube through the connection end, and the cleaning water is discharged from the sampling end, cleaning the inner wall of the sampling needle 201.

[0113] The sampling needle 201 is ultrasonically cleaned and its inner wall is flushed simultaneously in the cleaning chamber 102 , with high cleaning efficiency and good cleaning effect.

[0114] In some embodiments, if the ultrasonic cleaning device 100 described in Example 4 is used, the cleaning medium can be introduced into the cleaning chamber 102 through the liquid inlet 105 .

[0115] Example 8

[0116] like Figure 5 FIG. 1 is a flow chart of an ultrasonic cleaning control method according to an embodiment of the present invention. Based on the seventh embodiment, steps S104 to S106 are further included. The method includes the following steps:

[0117] S101, introducing a cleaning medium into the inner cavity 1022 of the cleaning chamber;

[0118] S102, controlling the sampling needle 201 to extend into the cleaning chamber 102;

[0119] S103, turning on the ultrasonic transducer 103 and starting the flushing of the inner wall of the sampling needle;

[0120] S104, draining the cleaning medium from the inner cavity 1022 of the cleaning chamber;

[0121] S105, introducing cleaning water into the inner cavity 1022 of the cleaning chamber so that the cleaning water flows out from the needle inlet 1021;

[0122] S106, draining the cleaning water from the inner cavity 1012 of the main shell and the inner cavity 1022 of the cleaning chamber;

[0123] In step S104, the waste liquid in the cleaning chamber 102 is drained. The cleaning medium and cleaning water originally introduced into the cleaning chamber 102 in steps S101 to 103 become waste liquid. The waste liquid is drained away to separate the sampling needle from the waste liquid, thus preventing the sampling needle 201 from being contaminated by the waste water.

[0124] In step S105, cleaning water is introduced into the cleaning chamber 102, so that the cleaning water flows out from the needle inlet 1021, and the cleaning water flushes the inner cavity 1022 of the cleaning chamber and the part of the sampling needle placed in the cleaning chamber 102, and washes away the waste liquid remaining in the inner cavity of the cleaning chamber 102 and on the sampling needle.

[0125] In step S106, the waste liquid remaining in the inner cavity of the cleaning chamber 102, the inner cavity of the main shell 101 and the sampling needle is diluted in the cleaning water, and the cleaning water is contaminated and becomes waste liquid. The concentration of dirt in the waste liquid is continuously diluted with the flow of cleaning water in and out, and the waste liquid in the inner cavity 1012 of the main shell and the inner cavity 1022 of the cleaning chamber is emptied to complete the cleaning.

[0126] In some embodiments, if the ultrasonic cleaning device 100 described in Example 4 is used, waste liquid in the cleaning chamber 102 can be discharged through the drain port 104 .

[0127] Example 9

[0128] like Figure 6 FIG. 1 is a flow chart of an ultrasonic cleaning control method according to an embodiment of the present invention. Based on the embodiment, step S107 is further included between steps S104 and S105. The method includes the following steps:

[0129] S101, introducing a cleaning medium into the inner cavity 1022 of the cleaning chamber;

[0130] S102, controlling the sampling needle 201 to extend into the cleaning chamber 102;

[0131] S103, turning on the ultrasonic transducer 103 and starting the flushing of the inner wall of the sampling needle;

[0132] S104, draining the waste liquid in the inner cavity 1022 of the cleaning chamber;

[0133] S107, introducing cleaning water into the inner cavity 1012 of the main housing to flush the inner cavity 1012 of the main housing;

[0134] S105, introducing cleaning water into the inner cavity 1022 of the cleaning chamber so that the cleaning water flows out from the needle inlet 1021;

[0135] S106 , draining the cleaning water from the inner cavity 1012 of the main shell and the inner cavity 1022 of the cleaning chamber.

[0136] In step S107 , cleaning water is introduced into the inner cavity 1012 of the main shell. The cleaning water flushes the inner cavity 1012 of the main shell, washes away the waste liquid remaining in the inner cavity of the main shell 101 , and keeps the inner cavity of the main shell 101 clean.

[0137] Example 10

[0138] like Figure 7 As shown, this embodiment further provides an analyzer 200 , including a sampling needle 201 and the ultrasonic cleaning device 100 according to any one of the first to sixth embodiments. The sampling needle 201 is connected to a switch valve 202 and a power pump 203 .

[0139] The power pump 203 provides power. The inlet of the power pump 203 is connected to the cleaning water tank 204 (or other equipment or structure for storing cleaning water). The outlet of the power pump 203 is connected to the connection end of the sampling needle, and the cleaning water can be pumped into the sampling needle 201. The on-off valve 202 is used to control whether the power pump 203 is connected to the sampling needle 201, thereby facilitating the control of the inner wall flushing.

[0140] Other implementations and beneficial effects of the analyzer of this embodiment are equivalent to the beneficial effects of the above-mentioned ultrasonic cleaning device 100 and are not described in detail here.

[0141] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An ultrasonic cleaning device, characterized in that: include: A main shell and a cleaning chamber, wherein one end of the cleaning chamber is provided with a needle entry port for inserting a needle, and the other end is connected to the main shell, and the inner cavity of the cleaning chamber communicates with the needle entry port and the inner cavity of the main shell; An ultrasonic transducer is provided on the main shell, and a vibration-generating portion of the ultrasonic transducer is located on a communication path between the inner cavity of the cleaning chamber and the inner cavity of the main shell; The inner cavity of the cleaning cabin is provided with an ultrasonic cleaning position; The ultrasonic cleaning position and the vibration-generating portion of the ultrasonic transducer are staggered in the vertical direction.

2. The ultrasonic cleaning device according to claim 1, wherein The distance between the cleaning position and the bottom of the inner cavity of the main shell is greater than or equal to 20 mm.

3. The ultrasonic cleaning device according to claim 2, wherein: The horizontal distance between the vibration-starting part of the ultrasonic transducer and the cleaning position is greater than or equal to 3 mm.

4. The ultrasonic cleaning device according to claim 1, wherein The main shell is provided with a liquid discharge port and a liquid inlet connected to the inner cavity of the main shell, respectively. The liquid discharge port is connected to the bottom of the inner cavity of the main shell.

5. The ultrasonic cleaning device according to claim 1, wherein A ring wall extending from the main shell surrounds the cleaning chamber to form a waste liquid tank; The shell is also provided with a waste liquid port connected to the waste liquid tank.

6. The ultrasonic cleaning device according to claim 1, wherein The distance between the cleaning position and the bottom of the inner cavity of the main housing is positively correlated with the pressure of the inner wall flushing, specifically: P=A×L Wherein, P is the pressure of inner wall flushing; L is the distance between the cleaning position and the bottom of the inner cavity of the main housing; Where, ρ is the density of cleaning water; S is the cross-sectional area of ​​the sampling needle outlet; v0 is the speed of the cleaning water flowing out of the sampling needle; v1 is the speed at which the cleaning water impacts the bottom of the inner cavity of the main housing; Δt is the time from when the cleaning water flows out from the sampling needle to when it hits the bottom of the inner cavity of the main housing.

7. An ultrasonic cleaning control method, characterized in that: Applicable to the ultrasonic cleaning device according to any one of claims 1 to 6, the control method comprises: introducing a cleaning medium into the inner cavity of the cleaning chamber; Control the sampling needle to reach the ultrasonic cleaning position; Turn on the ultrasonic transducer and start flushing the inner wall of the sampling needle.

8. The ultrasonic cleaning control method according to claim 7, wherein: The cleaning medium includes: cleaning agent or cleaning water.

9. The ultrasonic cleaning control method according to claim 7 or 8, wherein: Also includes: Discharging the cleaning medium from the inner cavity of the cleaning chamber; Introducing cleaning water into the inner cavity of the cleaning chamber so that the cleaning water flows out from the needle inlet; The cleaning water in the inner cavity of the main shell and the inner cavity of the cleaning chamber is drained.

10. The ultrasonic cleaning control method according to claim 9, wherein: After draining the waste liquid in the cleaning chamber and before introducing cleaning water into the cleaning chamber so that the cleaning water flows out from the needle inlet, the method further includes: Cleaning water is introduced into the inner cavity of the main shell to flush the inner cavity of the main shell.

11. An analyzer, characterized in that: The ultrasonic cleaning device comprises a sampling needle and the ultrasonic cleaning device according to any one of claims 1 to 6, wherein the sampling needle is connected to a switch valve and a power pump.

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