TW201016970A - Fluid circulation device - Google Patents

Abstract

The fluid circulation device comprises a circuit of the fluid to be pumped, with a rigid cavity closed off by a soft membrane that cooperates with drive means driven by a motor in to-and-fro movements. The face of the drive means intended to cooperate with membrane is connected via a conduit to a vacuum pump able to apply by suction the membrane against said face of the drive means, so as to create a rigid connection between the drive means and said membrane that then exactly follows the to-and-fro movements imposed by the drive means.

Description

201016970 IX. Description of the Invention: The present invention relates to a fluid circulation device comprising at least one membrane pump, wherein a film reciprocates in the rigid groove and is disposed upstream and downstream of the *rigid groove The opening and closing of the valve causes the fluid to circulate at a predetermined flow rate in a predetermined direction. [Prior Art] - The prior art describes a variety of thin film pumps which can be divided into two categories: the first type has a rigid connection between the film and its drive system; the second type is a fluid to push the film. The advantage of the second type of membrane pump is that each time the pump is used, the membrane is allowed to change, thereby preventing the transport of contaminating elements into the fluid being pumped. Conversely, the flexibility of the first rigid connection has a negative impact on the accuracy of fluid flow in each pumping cycle and on the flexibility of external parameters such as pumping fluid pressure. The prior art more precisely describes a plurality of systems for the use of a plurality of membrane pumps, wherein the membrane pump has a membrane that is driven by a gas, usually by air, to reciprocate the membrane and alternately inject and flow with the valve motion. A rigid groove enclosed by a soft film, in turn, causes a circular motion of the fluid in the rigid groove. The above prior art pumps each include: a membrane having elasticity that allows for volumetric changes to create fluid circulation; one or more valves; and a rigid groove disposed on the other side of the membrane. The gas of the film. No. A driven membrane pump comprising: a piston that is a double-reaction. &Recommendation of the conventional fluid circulation device that controls the membrane pump with a gaseous fluid is mainly that it is difficult to accurately control the total volume or volume of the pumping flow 201016970 in the reciprocating annulus of each membrane. This difficulty is due to the following Matter: Compressible fluid moving with air as the driving film 'The volume change of the air is inconsistent with the volume of the fluid delivered by the film due to the compressibility, pressure and temperature of the air. 0 SUMMARY OF THE INVENTION The primary object of the present invention is Provided is a fluid circulation device comprising at least one membrane pump, wherein a displacement of a membrane in the membrane pump is known, and a change in fluid volume is known and accurately determined, and the membrane pump is protected from external parameters such as circulating fluid pressure Significant impact. Another object of the present invention is to provide a fluid circulation device comprising a plurality of simple, robust and reliable membrane pumps, which is especially suitable for use in the medical field, thereby avoiding the circulation of fluids and all potential contaminating components. q mouth, J π 伢 伢 a fluid circulation device, its package = less - can solve the above shortcomings of the film, and includes the technical features described in the first paragraph of the patent scope. Normal disk = two bodies, the device includes at least - film chestnut, the film is passed through. The upstream valve communicates with the downstream to define a flow direction of the pumped fluid: the thin film of the device is provided by the pressure of the gaseous fluid and is provided between the membrane and the drive member - just succeeded and accurately Adjust the displacement of the 1 membrane of the pumped fluid! The fluid circulation device of the present invention is characterized in that it has a / or a plurality of fluid circuits, and each device includes a (10) call, the wall of which is a double-rigid groove ("gid Pressing it close to the driving member or the sensor, the film is made by the negative 201016970 LI, the displacement of the film is accurate, so the total amount or the pressure of the liquid is sent, but the film is the fluid circuit body. The film can be removed or replaced. The blade pump of the present invention comprises a rigid groove film which is actuated by the machine in the rigid groove, the driving member being in the electric power

Reciprocating movement under the action of a Li mechanical force or other type of motor. This: = one side of the piece is in contact with the film, through the film and the surface of the driving member;:, the work, the film is adhered to the surface of the driving member, and the vacuum is generated by the connection. By A' when the drive member is running, the film is not "close-to-close" and the drive member is moved". When the circulation device is idling, the action f can be separated to change the fluid circulation circuit, especially in medical devices. The j film is a thr〇w_away item. ^ Such a joint arrangement lacks elasticity and does not change in tension, which avoids direct contact between the potentially contaminated part and the pumped fluid: Knowing the volume discharged during the reciprocating cycle of the film, so that the package/ring device is less sensitive or insensitive to the occurrence of different parameters such as pressure, temperature, etc. The film pump provided by the present invention is advantageous for application. In the device or in a device comprising a plurality of membrane pumps, for example in the medical, food, and chamber fields. The pump of the present invention solves the aforementioned disadvantages of prior devices because the gas, or more suitably the gas vacuum, is only used to make the film Adhesion to a rigid mechanical component, the displacement of the rigid mechanical component itself in any way can be accurately known. Due to the rigidity of the assembly, the force transmission and displacement It is affected by common parameters such as the pressure of the pumped liquid. The invention is more advantageous in applications including a plurality of membrane pumps. In the embodiment, the vacuum vacuum generated by a single vacuum pump is sufficient to maintain different membranes. It corresponds to the contact between the drive systems. The air vacuum can be generated by any mode vacuum pump, which can be connected to one or more elements 201016970, even if there is a slight leak, the vacuum spring can be controlled and operated at all times. If the device is used for medical purposes, such as a dialysis device, it will usually also include multiple pressure sensors, the same principle can be used for the sensor, which brings additional benefits. In fact, it can be spent by vacuum pump The coupling between the film and the sensor is obtained in a minimal way, so the sensor will be directly subjected to the pressure from the fluid on the other side of the film.

As shown in Figures 1 and 2, the apparatus according to the present invention includes a circulating circuit 10 for pumping fluid with a separable segment and including a rigid cavity 12, a wall thereof It is composed of a film 13. As shown in the embodiment, the circuit 1〇 includes an upstream valve 14 and a downstream valve 15, and the upstream valve 14 and the downstream valve 15 respectively connect the upper and lower sides and the rigid groove 1 of the circulation circuit 10 。 哀 哀 哀 哀 _ _ _ _ _ _ _ _ 傅 傅 傅 傅 傅 傅 傅 傅 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达 马达- under the action of the negative pressure generated by the hole member 20, :: 40, the film 13 is adsorbed on the front surface of the driving member 20. Therefore, when the front surface of the vacuum pump 420 is η 丄 在 在 在 在 在 在 在 drive mechanism The negative pressure of the twin ensures the rigid connection between the film 13% of the workpiece 20, and the moving member 2〇 is closely attached with the moving member (4) 13 . In a preferred embodiment, the driving motor includes a rotor. The rotor passes through the song 30 as an electric motor, and the rotary motion of the motor 3〇 is converted into a drive. Drive: piece 2 " eye connection. Because the film 13 is pushed, the reciprocating action of the fluid returning member 20 is increased and decreased from the ground. The volume of the rigid groove 12 of the crucible is: 201016970 The downstream is like two ί:: I: two thin The media U upstream and the other are placed in the flow direction of the thin film 发明 invented by the film 13. Referring to Fig. 4, in the case of this / οϋϋ 3, the control is controlled by the cams 6〇, 7〇, the cam 6〇, low: can be Relying on the axis of the height of %. This way to ensure that the system manufacturing cost loop is different, the vacuum pump and the fluid including the soft film 13 are also applied. 3:1 When replacing the motor 30 with a sensor 80, due to the fact The connection force generated by the vacuum between the deniers causes the crucible 1 to be subjected to the positive and negative pressures in the inner loop. Referring to Fig. 6, the main political device of the present invention includes a plurality of loops 10, each s°0: ; # 20 "" ^ ^ 11 The film 13 of all the loops 10 is tested 3 to ^40 temple and a vacuum manifold 100 sensor 80. The point is attached to the corresponding drive member 20 or f The open tube 100 can be passive 'it only includes the branch, so that all the chestnuts and sensors are connected to this side The advantages are simple and low | real work shirts. Eyebrows, 婪 1 time Γ cost and its disadvantage is that for any reason the right one of the film and the associated drive member 2 f between the method of generating vacuum when ' Then all the connections will be affected: 8: And in the case of the opposite kind, 'I can't know that the problem is that there are other disadvantages to making a passive vacuum manifold. It's better to use multiples. The number of widths = each loop of the pump or even the sensor is connected to 40 in turn. These can be mechanical or controlled by a single control unit. Regardless of the type of valve, it is best to display the ... indicator at each = control eve and the indicator with ==, which is useful for knowing the position of the valve. & 90 connection A pressure or measurement can be set between the empty tubes, and the vacuum pump and the real knife can be used to detect the possible 9 201016970 i. For the above reasons, the pressure sensor and the true solution can be connected to each other by the destruction of the air vacuum, the connection between the one or more membranes and the drive member. ^ Taking advantage of the advantages provided by the above method, the control unit 9 controls the valve in the following manner. First of all, the mouth can be used for all other ^" to open a valve and close 0*, * ^ ^ ^ to start the real two pump. The negative pressure is enough to operate a device to open the second valve, and so on, straight 1 22: : a certain critical value. Then, the processor closes the vacuum to solve the problem or provide a diagnosis. The second valve 'so that the above device is to achieve the desired junction and film contact member or "member 2 〇 Table 2 shapes match to ensure the surface of the entire contact surface: where the corresponding shape can also be reduced in the true 'degree two: good implementation of the air volume between the surface, and easy to extract the existing true: The film is in contact with the preferred embodiment described above, wherein I is milk. For example, conforming to the shape, and the other is a flat shape, connected to the vacuum is the middle of the conical surface. The hole of 7 is located in the connecting member. • In another embodiment, both surfaces are provided with a plurality of piercing/connecting members in communication with the vacuum pump. The J hole 'to ensure the arrangement of the air as shown in Fig. 7, a film 13 is a nozzle or the surface of the sensor 80 is concave conical. The drive member 20 or the front surface of the sensor 80 is a flat, 13-fitting drive as shown in FIG. 8, a planar film 13, =: drive member 20 or sensor 8 The watch, & enamel film 13 is only the preferred conical shape of the present invention, as described above. The scope of the invention is limited, for example, to 12, for example, the shape of the invention, the shape of the 13 , the shape of the surface to which the thin 10 201016970 film is mated, and the manner in which the drive member 20 reciprocates. All are included in the scope of the patent scope of the invention as claimed.

201016970 [Simple description of the diagram] Figure 1A is a schematic diagram of a fluid circuit. 'This includes the fluid circulation of the present invention: 1: is a cross-sectional view of the fluid circuit in Fig. 1A along the line A_A. The figure shows a schematic of an f-film pump comprising the circuit shown in Figure 1. 3 π w said that the membrane pump and the valve connected to the pump upstream and downstream of the pump

4 is a perspective view and a cross-sectional view of the driving member and the valve of the membrane pump. 5 is a basic schematic diagram of a pressure sensing device of the fluid circulation device. The device of the present month includes a plurality of fluid circulation circuits. Two and eight are two preferred embodiments of the apparatus which show the shape of the drive member surface and the film in the membrane pump. [Main component symbol description] 1 〇 circulation loop 11 section 12 rigid slot 13 film ❿ 14 upstream valve 1 5 downstream valve 20 drive member 30 motor 4 〇 vacuum pump 50 conduit 60 cam 70 cam 8 〇 sensor 90 control unit 12 201016970 100 Vacuum manifold 110 pressure sensor

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Claims (1)

201016970 X. Patent application scope; 1. A fluid circulation device comprising: a circuit for pumping a fluid, the circuit comprising a rigid groove separated by a soft film; a driving member cooperating with the film; Reciprocating movement of the member; wherein the surface of the driving member engaged with the film is connected to the vacuum pump through a V , to adsorb the film against the surface of the driving member, thereby generating rigidity between the driving member and the film Connection, 0 The film will reciprocate exactly with the drive member. 2. The fluid circulation device of claim 1, wherein the rotary motion and the kinematic chain convert the rotary motion into a linear reciprocating motion thereby generating a reciprocating motion of the drive member. 3 _ The fluid circulation device of claim 2, wherein: the fluid circulation device comprises two valves disposed in the 'DX 々, the circulation loop, and respectively located in the rigid groove and Upstream and downstream of the membrane, the valve is controlled by the cams that are driven by the motor. μ @ 4. The fluid circulation device described in the scope of the patent application, the diaphragm is a concave conical shape, and the corresponding surface of the driving structure is flat. The surface of the diaphragm is flat, and the surface thereof is The concave circle 5. The fluid circulation film according to the first aspect of the patent application is in a planar shape, and the corresponding δ hai drive member is tapered. And the fluid circulation device of the fluid circulation device of the first aspect of the invention, further comprising a pressure sensor, wherein the circuit member is coupled to the driving member of the pressure sensor. The fluid circulation device of claim 1, wherein the fluid circulation device further comprises a plurality of circuits and a plurality of driving members, each of the films of the f-circuit being engaged with the driving member, the fluid楯^ The device uses a single vacuum pump to adsorb all of the films against the drive members. The fluid circulation device of claim 7, wherein the vacuum pump is connected to a vacuum manifold through which the vacuum manifold is connected to each of the drive members. 9. The fluid circulation device of claim 8, wherein: the fluid circulation device further comprises a control unit that controls the vacuum manifold of each of the driving members and the vacuum pump . The fluid circulation device of claim 7, wherein the rotary motion and the kinematic chain convert the rotary motion into a linear reciprocating motion thereby generating reciprocating motion of the drive members. II. The fluid circulation device of claim 1, wherein the circulation circuit comprises two valves, the valves being located upstream and downstream of the rigid groove and the membrane, respectively, the valves being subjected to the differential driven by the motor Controlled by the cam. The fluid circulation device of claim 7, wherein the film has a concave conical shape, and a surface of the driving member corresponding thereto is planar. 13. The fluid circulation device of claim 7, wherein the film is planar and the surface of the drive member corresponding thereto is concave conical. 14. The fluid circulation device of claim 7, wherein the fluid circulation device further comprises a pressure sensor, the film of the circuit mating with the drive member to which the pressure sensor is attached. 15