An electronically controlled evaporator and its control method

Abstract

The present invention discloses an electronically controlled evaporator and its control method. The electronically controlled evaporator includes: a medicine storage module, a plunger pump system, and a valve seat module; the medicine storage module includes a medicine tank, a medicine lid, and a bent plate; the plunger pump system is composed of a cylinder block, a piston rod, a floating joint, a lead screw, a pump motor, a pipe joint, etc., to realize the suction and pushing of anesthetic liquid; the valve seat module includes a valve seat, an air outlet, a diffusion joint, an air inlet, a lower valve plate of the evaporation core, an upper valve plate of the evaporation core, an evaporation core motor, an evaporation core spring, a ferrule, a switching valve motor, an upper valve plate of the switching valve, a lower valve plate of the switching valve, etc., to realize the on / off of the anesthetic liquid and the volatilization of the anesthetic. The anesthetic output by the plunger pump of the present invention can quickly volatilize and mix with fresh gas when entering the evaporation core, thereby realizing precise control of the anesthetic concentration. At the same time, when it is necessary to close the anesthetic output, the anesthetic liquid outlet can be quickly closed.

Description

Technical Field

[0001] The present invention belongs to the technical field of anesthesia equipment, and specifically relates to an electronically controlled evaporator and its control method. Background Art

[0002] In traditional anesthesia evaporators, whether mechanical or electronic, the volatilization of anesthetic drugs occurs in the evaporation chamber. The method of controlling the concentration of anesthetic drugs is to divide the fresh gas into two paths. Control valves are installed on these two paths of gas, and the opening degrees of these two valves are adjusted to control the distribution ratio of the gas flow. The gas entering the bypass evaporator carries away the anesthetic drug, thereby achieving the control of the anesthetic drug concentration. This method of controlling the concentration has poor accuracy and is not easy to control.

[0003] The precise control of anesthetic drug concentration is the major trend in the research and development of electronic evaporators. In traditional anesthesia evaporators, whether mechanical or electronic, the volatilization of anesthetic drugs occurs in the evaporation chamber. The method of controlling the concentration of anesthetic drugs is to divide the fresh gas into two paths. Control valves are installed on these two paths of gas, and the opening degrees of these two valves are adjusted to control the distribution ratio of the gas flow. The gas entering the bypass evaporator carries away the anesthetic drug, thereby achieving the control of the anesthetic drug concentration. This method of controlling the concentration has poor accuracy and is not easy to control. Summary of the Invention

[0004] In order to solve the problem that the accuracy of anesthetic drugs is not easy to control, the present invention provides an electronically controlled evaporator, which precisely controls the flow rate of anesthetic drug liquid by controlling the speed of the plunger pump. The anesthetic drug output by the plunger pump of the present invention enters the evaporation core, can quickly volatilize and mix with the fresh gas, thereby achieving precise control of the anesthetic drug concentration. At the same time, when it is necessary to close the anesthetic drug output, the anesthetic drug liquid outlet can be quickly closed.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] An electronically controlled evaporator, the device comprising: a medicine storage module, a plunger pump system, and a valve seat module;

[0007] The medicine storage module includes a medicine tank;

[0008] The plunger pump system includes a cylinder block, a piston rod, a floating joint, a lead screw, and a pump motor; the piston rod is connected to the lead screw through the floating joint, and the lead screw is connected to the output end of the pump motor; the piston of the piston rod divides the cylinder block into left and right two cavities;

[0009] The valve seat module includes a valve seat, an air outlet, a diffusion joint, an air inlet, an evaporation core, and a switching valve; two cylindrical cavities are opened up and down in the valve seat, the evaporation core is arranged in the upper cavity, and the switching valve is arranged in the lower cavity; the air outlet is communicated with the evaporation core through the diffusion joint, and the air inlet is communicated with the evaporation core;

[0010] The evaporation core is communicated with the medicine tank through the first pipe joint and the fourth pipe joint; the evaporation core is communicated with the right cavity of the cylinder block through the second pipe joint and the eighth pipe joint; the evaporation core is communicated with the left cavity of the cylinder block through the third pipe joint and the tenth pipe joint;

[0011] The switching valve is communicated with the upper space of the medicine tank through the seventh pipe joint and the fifth pipe joint; the switching valve is communicated with the anesthetic liquid in the medicine tank through the thirteenth pipe joint and the sixth pipe joint; the switching valve is communicated with the left cavity of the cylinder block through the twelfth pipe joint and the eleventh pipe joint; the switching valve is communicated with the right cavity of the cylinder block through the fourteenth pipe joint and the ninth pipe joint.

[0012] Further, the evaporation core includes an evaporation core lower valve plate 27, an evaporation core upper valve plate 28, an evaporation core motor 29, an evaporation core spring 30 and a ferrule 31;

[0013] The evaporation core spring 30 is arranged between the end face of the evaporation core upper valve plate 28 and the inner wall of the upper cavity; the output end of the evaporation core motor 29 passes through the evaporation core spring 30 and is connected to the evaporation core upper valve plate 28; the evaporation core lower valve plate 27 and the evaporation core upper valve plate 28 are stacked up and down, the ferrule 31 is sleeved on the evaporation core upper valve plate 28, and a fluid channel is formed between the ferrule 31 and the evaporation core upper valve plate 28; Y1 hole, Y2 hole, Y3 hole, Y4 hole, Y5 hole, Y6 hole, Y7 hole, Y8 hole and Y9 hole are arranged on the evaporation core lower valve plate 27; a first arc groove 36 is arranged on the evaporation core upper valve plate 28; the Y3 hole is communicated with the second pipe joint 6, the Y4 hole is communicated with the first pipe joint 5, and the Y5 hole is communicated with the third pipe joint 7; the Y3 hole and the Y7 hole are communicated through the internal channel of the evaporation core lower valve plate 27, and the Y5 hole and the Y1 hole are communicated through the internal channel of the evaporation core lower valve plate 27; when the first arc groove 36 rotates, the Y1 hole, the Y2 hole and the Y9 hole are communicated, or the Y3 and the Y4 are communicated, or the Y4 and the Y5 are communicated, or the Y6, the Y7 and the Y8 are communicated; the Y2 hole, the Y6 hole, the Y8 hole and the Y9 hole are respectively communicated with the fluid channel.

[0014] The switching valve includes a switching valve motor 32, a switching valve lower valve plate 35 and a switching valve upper valve plate 34; the switching valve lower valve plate  35 and the switching valve upper valve plate 34 are stacked up and down, and the switching valve upper valve plate 34 is connected to the output end of the switching valve motor 32; X1 hole, X2 hole, X3 hole and X4 hole are arranged on the switching valve lower valve plate 35; A1 hole, A2 hole and a second arc groove 37 are arranged on the switching valve upper valve plate 34; the X1 hole is communicated with the twelfth pipe joint 24, the X2 hole is communicated with the thirteenth pipe joint 25, the X3 is communicated with the fourteenth pipe joint 26, and the X4 is communicated with the seventh pipe joint 13; the A1 hole or the A2 hole communicates the X4 hole with the outside air of the valve seat 2; when the second arc groove 37 rotates, the X1 hole and the X2 hole or the X3 hole and the X2 hole are communicated.

[0015] The lower valve plate 27 of the evaporation core includes a valve plate 38 and a valve boss 39. The valve plate 38 is annular, and the valve boss 39 is arranged at the center of the annular valve plate 38. Y1 hole, Y3 hole, Y4 hole, Y5 hole and Y7 hole are arranged in a circumferential distribution on the valve boss 39. Y2 hole, Y9 hole, Y6 hole and Y8 hole are arranged on the valve plate 38. The Y2 hole, Y9 hole, Y6 hole and Y8 hole are respectively rows of small holes, and the rows of small holes are communicated through a strip-shaped groove at one end far from the contact surface between the lower valve plate 27 of the evaporation core and the upper valve plate 28 of the evaporation core.

[0016] In the present invention, an arc-shaped groove is arranged on the upper valve plate 28 of the evaporation core, and the circumference where the arc-shaped groove is located corresponds to the circumferences where the Y1 hole, Y3 hole, Y4 hole, Y5 hole and Y7 hole are located. When the upper valve plate 28 of the evaporation core rotates, the arc-shaped groove can communicate between the Y1, Y2 and Y9 holes, can also communicate between the Y3 and Y4 holes, can also communicate between the Y4 and Y5 holes, and can also communicate between the Y6, Y7 and Y8 holes.

[0017] The switching valve includes a switching valve motor, a lower switching valve plate and an upper switching valve plate. The lower switching valve plate and the upper switching valve plate are stacked up and down, and the upper switching valve plate is connected to the output end of the switching valve motor. X1 hole, X2 hole, X3 hole and X4 hole are arranged on the lower switching valve plate 35. The X1 hole is communicated with the twelfth pipe joint, the X2 hole is communicated with the thirteenth pipe joint, the X3 is communicated with the fourteenth pipe joint, and the X4 is communicated with the seventh pipe joint. A1 hole, A2 hole and an arc-shaped groove are arranged on the upper switching valve plate 34. The circumference where the arc-shaped groove is located corresponds to the circumferences where the X1 hole, X2 hole, X3 hole and X4 hole are located, and the A1 hole and the A2 hole are through holes penetrating the upper switching valve plate 34, and when the X1 hole is communicated with the X2 hole or the X2 and X3 holes are communicated, the A1 hole or the A2 hole is communicated with the X4 hole.

[0018] In the present invention, when the upper valve plate of the evaporation core and the upper valve plate of the switching valve rotate, the lower valve plate of the evaporation core and the lower valve plate of the switching valve do not rotate. A hole corresponding to the X4 is opened on the valve seat, and this hole is communicated with the space outside the valve seat. When the A1 or A2 hole rotates to the X4 hole, the communication between the X4 hole and the external space of the valve seat can be realized.

[0019] In the present invention, when sucking medicine in the left cavity or the right cavity of the cylinder block, it is necessary to replenish the medicine tank. At this time, the X4 hole can be communicated with the external space of the valve seat, and air can enter the medicine tank.

[0020] The plunger pump of the present invention divides the cavity into left and right cavities by a piston. Small holes are respectively opened in the upper and lower parts of the two cavities. The upper hole is the high-position hole, and the lower hole is the low-position hole. The upper and lower position holes of the two cavities of the plunger pump are used to exhaust air through the high-position hole and push the medicine through the low-position hole, so as to prevent air bubbles from flowing in when pushing the medicine. The plunger pump needs to cooperate with a switching valve and an evaporation core to complete functions such as medicine suction, medicine pushing, and air bubble exhaust. The principle of controlling the concentration is as follows: the volume of the anesthetic is controlled by controlling the forward and backward speed of the piston by the plunger pump. If the liquid anesthetic pushed is completely volatilized after being mixed with fresh gas, a mixed anesthetic gas with a certain concentration can be obtained. Due to the incompressibility of the liquid volume, the volume of the anesthetic can be accurately controlled by the selection of the motor, so the concentration of the anesthetic can be accurately controlled.

[0021] In the present invention, the volatilization small holes are directly opened on the valve plate. Closing the valve plate cuts off the supply of the anesthetic, greatly shortening the anesthetic residue. The evaporation core and the switching valve work in coordination to achieve functions such as air exhaust, air supply, and medicine pushing;

[0022] The present invention is a new type of electronically controlled evaporator principle in an anesthesia machine, which can accurately control the flow rate and achieve the rapid volatilization of the anesthetic. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the electronically controlled evaporator;

[0024] Figure 2 It is an assembly drawing of the evaporation core on the valve seat;

[0025] Figure 3 It is an isometric view of the electronically controlled evaporator;

[0026] Figure 4 It is a partial isometric view of the evaporation core;

[0027] Figure 5 It is a schematic diagram of the combined structure of the upper valve plate and the lower valve plate of the evaporation core;

[0028] Figure 6 It is a bottom view of the combination of the upper valve plate and the lower valve plate of the evaporation core;

[0029] Figure 7 It is a front view of the combination of the upper valve plate and the lower valve plate of the evaporation core;

[0030] Figure 8 It is a top view of the combination of the upper valve plate and the lower valve plate of the evaporation core;

[0031] Figure 9 It is a schematic diagram of the structure of the upper valve plate of the evaporation core;

[0032] Figure 10 It is a schematic diagram of the structure of the lower valve plate of the evaporation core;

[0033] Figure 11 Isometric view of the switching valve;

[0034] Figure 12 Schematic diagram of the switching valve;

[0035] Figure 13 Is a schematic structural diagram of the upper valve plate of the switching valve;

[0036] Figure 14 Is a schematic structural diagram of the lower valve plate of the switching valve;

[0037] Reference numerals:

[0038] 1. Connecting plate; 2. Valve seat; 3. Air outlet; 4. Diffusion joint; 5. First pipe joint; 6. Second pipe joint; 7. Third pipe joint; 8. Fourth pipe joint; 9. Medicine tank; 10. Medicine lid; 11. Fifth pipe joint; 12. Sixth pipe joint; 13. Seventh pipe joint; 14. Air inlet; 15. Cylinder block; 16. Piston rod; 17. Floating joint; 18. Lead screw; 19. Pump motor; 20. Eighth pipe joint; 21. Ninth pipe joint; 22. Tenth pipe joint; 23. Eleventh pipe joint; 24. Twelfth pipe joint; ..... Detailed implementation manners

[0039] The present invention will be further described in detail below with reference to the drawings and specific implementation manners.

[0040] Example 1

[0041] As Figure 1 shown, an electric control evaporator, the electric control evaporator includes: a medicine storage module, a plunger pump system, and a valve seat module;

[0042] The medicine storage module includes a medicine tank 9, a medicine lid ......

[0043] The plunger pump system includes a cylinder block 15, a piston rod 16, a floating joint 17, a lead screw 18, a pump motor 19; the piston rod 16 is connected to the lead screw 18 through the floating joint 17, and the lead screw 18 is connected to the output end of the pump motor 19; the piston connected to the piston rod 16 divides the cylinder block 15 into left and right two cavities;

[0044] The valve seat module includes a valve seat 2, an air outlet 3, a diffuser joint 4, an air inlet 14, an evaporation core, and a switching valve; two cylindrical cavities are formed in the upper and lower parts of the valve seat 2, the evaporation core is arranged in the upper cavity, and the switching valve is arranged in the lower cavity; the air outlet 3 is communicated with the evaporation core through the diffuser joint 4, and the air inlet 14 is communicated with the evaporation core;

[0045] The evaporation core is communicated with the medicine tank 9 through a first pipe joint 5 and a fourth pipe joint 8; the evaporation core is communicated with the right cavity of the cylinder block 15 through a second pipe joint 6 and an eighth pipe joint 20; the evaporation core is communicated with the left cavity of the cylinder block 15 through a third pipe joint 7 and a tenth pipe joint 22;

[0046] The switching valve is communicated with the upper space of the medicine tank 9 through a seventh pipe joint 13 and a fifth pipe joint 11; the switching valve is communicated with the anesthetic liquid in the medicine tank 9 through a thirteenth pipe joint 25 and a sixth pipe joint 12; the switching valve is communicated with the left cavity of the cylinder block 15 through a twelfth pipe joint 24 and an eleventh pipe joint 23; the switching valve is communicated with the right cavity of the cylinder block 15 through a fourteenth pipe joint 26 and a ninth pipe joint 21.

[0047] As Figures 2 - 10 shown, the evaporation core includes an evaporation core lower valve plate 27, an evaporation core upper valve plate 28, an evaporation core motor 29, an evaporation core spring 30, and a ferrule 31;

[0048] The evaporation core spring 30 is arranged between the end face of the evaporation core upper valve plate 28 and the inner wall of the upper cavity; the output end of the evaporation core motor 29 passes through the evaporation core spring 30 and is connected to the evaporation core upper valve plate 28; the evaporation core lower valve plate 27 and the evaporation core upper valve plate 28 are stacked up and down, the ferrule 31 is sleeved on the evaporation core upper valve plate 28, and a fluid channel 40 is formed between the ferrule 31 and the evaporation core upper valve plate 28; Y1 hole, Y2 hole, Y3 hole, Y4 hole, Y5 hole, Y6 hole, Y7 hole, Y8 hole, and Y9 hole are arranged on the evaporation core lower valve plate 27; a first arc groove 36 is arranged on the evaporation core upper valve plate 28; the Y3 hole is communicated with the second pipe joint 6, the Y4 hole is communicated with the first pipe joint 5, and the Y5 hole is communicated with the third pipe joint 7; the Y3 hole and the Y7 hole are communicated through the internal channel of the evaporation core lower valve plate 27, and the Y5 hole and the Y1 hole are communicated through the internal channel of the evaporation core lower valve plate 27; when the first arc groove 36 rotates, it communicates the Y1, Y2, and Y9 holes, or communicates the Y3 and Y4, or communicates the Y4 and Y5, or communicates the Y6, Y7, and Y8; the Y2 hole, Y6 hole, Y8 hole, and Y9 hole are respectively communicated with the fluid channel.

[0049] The lower evaporation core valve sheet 27 includes a valve plate 38 and a valve boss 39. The valve plate 38 is annular, and the valve boss 39 is arranged at the center of the annular valve plate 38. Y1 hole, Y3 hole, Y4 hole, Y5 hole and Y7 hole are arranged in a circumferential distribution on the valve boss 39. Y2 hole, Y9 hole, Y6 hole and Y8 hole are arranged on the valve plate 38. The Y2 hole, Y9 hole, Y6 hole and Y8 hole are respectively rows of small holes, and the rows of small holes are communicated through a strip-shaped groove at one end far from the contact surface between the lower evaporation core valve sheet 27 and the upper evaporation core valve sheet 28.

[0050] As Figure 3 , Figures 11 - 14 shown, the switching valve includes a switching valve motor 32, a lower switching valve sheet 35 and an upper switching valve sheet 34. The lower switching valve sheet 35 and the upper switching valve sheet 34 are stacked up and down, and the upper switching valve sheet 34 is connected to the output end of the switching valve motor 32. X1 hole, X2 hole, X3 hole and X4 hole are arranged on the lower switching valve sheet 35. A1 hole, A2 hole and a second arc-shaped groove 37 are arranged on the upper switching valve sheet 34. The X1 hole is communicated with the twelfth pipe joint 24, the X2 hole is communicated with the thirteenth pipe joint 25, the X3 is communicated with the fourteenth pipe joint 26, and the X4 is communicated with the seventh pipe joint 13. The A1 hole or the A2 hole communicates the X4 hole with the outside air of the valve seat 2. When the second arc-shaped groove 37 rotates, it communicates the X1 hole and the X2 hole or the X3 hole with the X2 hole.

[0051] The medicine storage module includes a medicine tank 9, a medicine lid 10 and a bent plate 33. The plunger pump system includes a cylinder block 15, a piston rod 16, a floating joint 17, a lead screw 18, a pump motor 19 and pipe joints, etc., to realize the medicine sucking and pushing of the anesthetic liquid. The valve seat module includes a valve seat 2, an air outlet 3, a diffusion joint 4, an air inlet 14, a lower evaporation core valve sheet 27, an upper evaporation core valve sheet 28, an evaporation core motor 29, an evaporation core spring 30, a ferrule 31, a switching valve motor 32, an upper switching valve sheet 34 and a lower switching valve sheet 35, etc., to realize the on-off of the anesthetic liquid and the volatilization of the anesthetic.

[0052] The eighth pipe joint 20, the ninth pipe joint 21, the tenth pipe joint 22 and the eleventh pipe joint 23 are respectively installed on the upper and lower parts on both sides of the cavity of the cylinder block 10. The piston in the cylinder block 15 is connected to the lead screw 18 through the piston rod 16 and the floating joint 17. Controlling the pump motor 19 can realize the forward and backward movement of the piston.

[0053] The described valve seat 2 is provided with two cylindrical cavities opened vertically. The evaporation core lower valve plate 27, the evaporation core upper valve plate 28, the evaporation core spring 30 and the ferrule 31 are installed in the upper cavity. A certain gap is left between the evaporation core lower valve plate 27 and the ferrule 31 as a fluid passage. Fresh gas passes through this gap from the air inlet 14 and then flows out from the diffusion joint 4 and the air outlet 3. The evaporation core motor 29 is connected to the evaporation core upper valve plate 28. By controlling the evaporation core motor 29, the rotation of the evaporation core upper valve plate 28 can be realized to achieve the on-off of each pipe orifice. In its lower cavity, a switching valve lower valve plate 35, a switching valve upper valve plate 34 and a spring are installed. The switching valve motor 32 is connected to the switching valve upper valve plate 34. By controlling the switching valve motor 32, the rotation of the switching valve upper valve plate 34 can be realized to achieve the on-off of each pipe orifice.

[0054] The gap between the valve plate 38 and the ferrule 31 is the fluid passage 40. The fresh air entering from the air inlet flows out from the air outlet after passing through this gap.

[0055] Regarding the evaporation core assembly, see Figure 2 , in which the Y3 hole of the evaporation core lower valve plate 27 communicates with the second pipe joint 6, the Y4 hole communicates with the first pipe joint 5, and the Y5 hole communicates with the third pipe joint 7. The external connection relationship of the pipe joints can be seen in Figure 1 .

[0056] Regarding the pipe connection of the lower valve plate in the lower cavity, the X1 hole of the switching valve lower valve plate 35 communicates with the twelfth pipe joint 24, the X2 hole communicates with the thirteenth pipe joint 25, the X3 communicates with the fourteenth pipe joint 26, and the X4 communicates with the seventh pipe joint 13. The external connection relationship of the pipe joints can be seen in Figure 1 .

[0057] A control method for an electronically controlled evaporator, the control method comprising the following steps:

[0058] 1. Initial state:

[0059] The piston of the piston pump system is at the rightmost end of the cylinder block 15, and the pipeline is filled with gas. The medicine tank 9 is filled with anesthetic.

[0060] 2. Exhaust air bubbles:

[0061] Control the rotation of the evaporation core motor 29 to drive the rotation of the valve plate 28 on the evaporation core, so that the first arc-shaped groove 36 connects the Y3 hole and the Y4 hole. Control the rotation of the switching valve motor 32 to drive the rotation of the valve plate 34 on the switching valve, so that the second arc-shaped groove connects the X1 hole and the X2 hole. Then control the rotation of the pump motor 19 to push the piston rod 16 to move leftward. At this time, the anesthetic in the medicine tank sequentially passes through the fourth pipe joint 8, the first pipe joint 5, the Y4 hole, the Y3 hole, the second pipe joint 6, and the eighth pipe joint 20 and enters the right cavity of the cylinder block 15. At the same time, the gas in the left cavity of the cylinder block 15 sequentially passes through the tenth pipe joint 23, the twelfth pipe joint 24, the X1 hole, the X2 hole, the thirteenth pipe joint 25, and the sixth pipe joint 12 and enters the medicine tank 9. At this time, the A1 hole is connected to the X hole to maintain the air pressure balance in the medicine tank 9.

[0062] When the piston moves to the leftmost end, the evaporation core motor 29 rotates to drive the rotation of the valve plate 28 on the evaporation core, so that the Y4 hole is connected to the Y5 hole. The switching valve motor 32 rotates to drive the rotation of the valve plate 34 on the switching valve, so that the X2 hole is connected to the X3 hole. Then control the rotation of the pump motor 19 to push the piston rod 16 to move rightward. At this time, the anesthetic in the medicine tank sequentially passes through the fourth pipe joint 8, the first pipe joint 5, the Y4 hole, the Y5 hole, the third pipe joint 7, and the tenth pipe joint 22 and enters the left cavity of the cylinder block 15. At the same time, the gas in the right cavity of the cylinder block 15 sequentially passes through the ninth pipe joint 21, the fourteenth pipe joint 26, the X3 hole, the X2 hole, the thirteenth pipe joint 25, and the sixth pipe joint 12 and enters the medicine tank 9. After repeating the cycle many times, all the gas in the pipeline is discharged. At this time, the A2 hole is connected to the X hole to maintain the air pressure balance in the medicine tank 9.

[0063] 3. Delivery of anesthetic:

[0064] When the piston is at the rightmost end of the cylinder block, control the rotation of the evaporation core motor 29 to drive the rotation of the valve plate 28 on the evaporation core so that the Y1 hole, the Y9 hole and the Y2 hole are connected. Control the rotation of the switching valve motor 32 to drive the rotation of the valve plate 34 on the switching valve so that the X3 hole is connected to the X2 hole, and the A2 hole is connected to the X4 hole. Then control the rotation of the pump motor 19 to push the piston rod 16 to move leftward. The anesthetic in the left cavity of the cylinder block 15 sequentially passes through the tenth pipe joint 22, the third pipe joint 7, the Y5 hole, the Y2 hole and enters the Y1 hole and the Y9 hole, and then enters the fluid passage 40 to be mixed with fresh air to form an anesthetic mixture gas with a certain concentration. At the same time, the anesthetic in the medicine tank sequentially passes through the sixth pipe joint 12, the thirteenth pipe joint 25, the X2 hole, the X3 hole, the fourteenth pipe joint 26, and the ninth pipe joint 21 and enters the right cavity of the cylinder block 15, realizing the process of simultaneously pushing the anesthetic and sucking the anesthetic. At this time, the A2 hole connects the X4 hole to the outside, and the outside air sequentially passes through the A2 hole, the X4 hole, the seventh pipe joint 13, and the fifth pipe joint 11 and enters the medicine tank 9, thus realizing the air replenishment process of the medicine tank.

[0065] Conversely, when the piston is at the leftmost end of the cylinder block, control the rotation of the evaporation core motor 29 to drive the rotation of the valve plate 28 on the evaporation core so that the Y6 hole, Y8 hole and Y7 hole are communicated. Control the rotation of the switching valve motor 32 to drive the rotation of the valve plate 34 on the switching valve so that the X2 hole is communicated with the X1 hole, and the A1 hole is communicated with the X4 hole. Then control the rotation of the pump motor 19 to push the piston rod 16 to move to the right. The anesthetic in the right chamber of the cylinder block 15 sequentially passes through the eighth pipe joint 20, the second pipe joint 6, the Y3 hole, the Y7 hole, enters the Y6 hole and the Y8 hole, and then enters the fluid passage 40 to be mixed with fresh air to form an anesthetic mixture gas with a certain concentration. At the same time, the anesthetic in the medicine tank sequentially passes through the sixth pipe joint 12, the thirteenth pipe joint 25, the X2 hole, the X1 hole, the twelfth pipe joint 24, the eleventh pipe joint 23 and enters the left chamber of the cylinder block 15, realizing the process of simultaneously pushing and sucking the anesthetic. At this time, the A1 hole communicates the X4 hole with the outside, and the outside air sequentially passes through the A1 hole, the X4 hole, the seventh pipe joint 13, the fifth pipe joint 11 and enters the medicine tank 9, thereby realizing the air supplement process of the medicine tank.

[0066] 4. Shutdown state: Drive the valve plate 28 on the evaporation core and the valve plate 34 on the switching valve to rotate to the middle position so that all interfaces are blocked, and the anesthetic is stored in the pipeline, and the evaporator does not work.

[0067] The content not detailed in the present invention can all adopt the conventional technical knowledge in the field.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that any modification or equivalent replacement of the technical solutions of the present invention does not depart from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. An electronically controlled evaporator, characterized in that, The electronically controlled evaporator includes: a medicine storage module, a plunger pump system, and a valve seat module; The medicine storage module includes a medicine tank (9); The plunger pump system includes a cylinder block (15), a piston rod (16), a floating joint (17), a lead screw (18), and a pump motor (19); the piston rod (16) is connected to the lead screw (18) through the floating joint (17), and the lead screw (18) is connected to the output end of the pump motor (19); the piston connected to the piston rod (16) divides the cylinder block (15) into left and right cavities; The valve seat module includes a valve seat (2), an air outlet (3), a diffusion joint (4), an air inlet (14), an evaporation core, and a switching valve; two cylindrical cavities are opened vertically in the valve seat (2), an evaporation core is arranged in the upper cavity, and a switching valve is arranged in the lower cavity; the air outlet (3) is communicated with the evaporation core through the diffusion joint (4), and the air inlet (14) is communicated with the evaporation core; The evaporation core is communicated with the medicine tank (9) through a first pipe joint (5) and a fourth pipe joint (8); the evaporation core is communicated with the right cavity of the cylinder block (15) through a second pipe joint (6) and an eighth pipe joint (20); the evaporation core is communicated with the left cavity of the cylinder block (15) through a third pipe joint (7) and a tenth pipe joint (22); The switching valve is communicated with the upper space of the medicine tank (9) through a seventh pipe joint (13) and a fifth pipe joint (11); the switching valve is communicated with the anesthetic liquid in the medicine tank (9) through a thirteenth pipe joint (25) and a sixth pipe joint (12); the switching valve is communicated with the left cavity of the cylinder block (15) through a twelfth pipe joint (24) and an eleventh pipe joint (23); the switching valve is communicated with the right cavity of the cylinder block (15) through a fourteenth pipe joint (26) and a ninth pipe joint (21).

2. The electric control evaporator according to claim 1, wherein, The evaporation core includes an evaporation core lower valve plate (27), an evaporation core upper valve plate (28), an evaporation core motor (29), an evaporation core spring (30), and a ferrule (31); The evaporation core spring (30) is arranged between the end face of the upper valve plate (28) of the evaporation core and the inner wall of the upper cavity; the output end of the evaporation core motor (29) passes through the evaporation core spring (30) and is connected to the upper valve plate (28) of the evaporation core; the upper valve plate (28) and the lower valve plate (27) of the evaporation core are stacked up and down, and the ferrule (31) is sleeved on the upper valve plate (28) of the evaporation core, and a fluid channel is formed between the ferrule (31) and the lower valve plate (27) of the evaporation core; the lower valve plate (27) of the evaporation core is provided with Y1 hole, Y2 hole, Y3 hole, Y4 hole, Y5 hole, Y6 hole, Y7 hole, Y8 hole and Y9 hole; the upper valve plate (28) of the evaporation core is provided with a first arc groove (36); the Y3 hole is communicated with the second pipe joint (6), the Y4 hole is communicated with the first pipe joint (5), and the Y5 hole is communicated with the third pipe joint (7); the Y3 hole and the Y7 hole are communicated through the internal channel of the lower valve plate (27) of the evaporation core, and the Y5 hole and the Y1 hole are communicated through the internal channel of the lower valve plate (27) of the evaporation core; when the first arc groove (36) rotates, it connects the Y1 hole, the Y2 hole and the Y9 hole, or connects the Y3 hole and the Y4 hole, or connects the Y4 hole and the Y5 hole, or connects the Y6 hole, the Y7 hole and the Y8 hole; the Y2 hole, the Y6 hole, the Y8 hole and the Y9 hole are respectively communicated with the fluid channel; The switching valve includes a switching valve motor (32), a switching valve lower valve plate (35) and a switching valve upper valve plate (34); the switching valve lower valve plate (35) and the switching valve upper valve plate (34) are stacked up and down, and the switching valve upper valve plate (34) is connected to the output end of the switching valve motor (32); the switching valve lower valve plate (35) is provided with X1 hole, X2 hole, X3 hole and X4 hole; the switching valve upper valve plate (34) is provided with A1 hole, A2 hole and a second arc groove (37); the X1 hole is communicated with the twelfth pipe joint (24), the X2 hole is communicated with the thirteenth pipe joint (25), the X3 hole is communicated with the fourteenth pipe joint (26), and the X4 is communicated with the seventh pipe joint (13); the A1 hole or the A2 hole communicates the X4 hole with the outside air outside the valve seat (2); when the second arc groove (37) rotates, it connects the X1 hole and the X2 hole or the X3 hole and the X2 hole.

3. The electric control evaporator according to claim 2, wherein, The lower valve plate (27) of the evaporation core includes a valve plate (38) and a valve boss (39), the valve plate (38) is annular, and the valve boss (39) is arranged at the center of the annular valve plate (38); the Y1 hole, the Y3 hole, the Y4 hole, the Y5 hole and the Y7 hole are arranged in a circumferential distribution on the valve boss (39); the Y2 hole, the Y9 hole, the Y6 hole and the Y8 hole are arranged on the valve plate (38); the Y2 hole, the Y9 hole, the Y6 hole and the Y8 hole are respectively rows of small holes, and the rows of small holes are communicated through a strip groove at one end far from the contact surface between the lower valve plate (27) of the evaporation core and the upper valve plate (28) of the evaporation core.

4. The electric control evaporator according to any one of claims 1-3, characterized in that, The medicine storage module further includes a medicine cover (10) and a bent plate (33), the medicine canister (9) is fixed on the valve seat (2) through the bent plate (33); the medicine cover (10) covers the opening of the medicine canister (9).

5. A control method for the electronic control evaporator according to any one of claims 1-4, the control method comprising the following steps: 1) Initial state: The piston of the plunger pump system is at the rightmost end of the cylinder block (15), the pipeline is filled with gas, and the medicine tank (9) is filled with anesthetic medicine; 2) Exhaust air bubbles: Control the rotation of the evaporation core motor (29) to drive the valve plate (28) on the evaporation core to rotate, so that the first arc-shaped groove (36) connects the Y3 hole and the Y4 hole, control the rotation of the switching valve motor (32) to drive the valve plate (34) on the switching valve to rotate, so that the second arc-shaped groove connects the X1 hole and the X2 hole; then control the rotation of the pump motor (19) to push the piston rod (16) to move to the left; at this time, the anesthetic medicine in the medicine tank sequentially passes through the fourth pipe joint (8), the first pipe joint (5), the Y4 hole, the Y3 hole, the second pipe joint (6), and the eighth pipe joint (20) and enters the right chamber of the cylinder block (15); at the same time, the gas in the left chamber of the cylinder block (15) sequentially passes through the tenth pipe joint (23), the twelfth pipe joint (24), the X1 hole, the X2 hole, the thirteenth pipe joint (25), and the sixth pipe joint (12) and enters the medicine tank (9); When the piston moves to the leftmost end, control the rotation of the evaporation core motor (29) to drive the valve plate (28) on the evaporation core to rotate, so that the Y4 hole is connected to the Y5 hole, control the rotation of the switching valve motor (32) to drive the valve plate (34) on the switching valve to rotate, so that the X2 hole is connected to the X3 hole, and then control the rotation of the pump motor (19) to push the piston rod (16) to move to the right; at this time, the anesthetic medicine in the medicine tank sequentially passes through the fourth pipe joint (8), the first pipe joint (5), the Y4 hole, the Y5 hole, the third pipe joint (7), and the tenth pipe joint (22) and enters the left chamber of the cylinder block (15); at the same time, the gas in the right chamber of the cylinder block (15) sequentially passes through the ninth pipe joint (21), the fourteenth pipe joint (26), the X3 hole, the X2 hole, the thirteenth pipe joint (25), and the sixth pipe joint (12) and enters the medicine tank (9); repeat the cycle multiple times to exhaust all the gas in the pipeline; 3) Deliver anesthetic medicine: When the piston is at the rightmost end of the cylinder block, control the evaporation core motor (29) to rotate and drive the valve plate (28) on the evaporation core to rotate, so that the Y1 hole, Y9 hole and Y2 hole are communicated. Control the switching valve motor (32) to rotate and drive the valve plate (34) on the switching valve to rotate, so that the X3 hole is communicated with the X2 hole, and the A2 hole is communicated with the X4 hole. Then control the pump motor (19) to rotate and push the piston rod (16) to move leftward; the anesthetic in the left chamber of the cylinder block (15) sequentially passes through the tenth pipe joint (22), the third pipe joint (7), the Y5 hole, the Y2 hole, enters the Y1 hole and the Y9 hole, and then enters the fluid passage to be mixed with fresh air to form an anesthetic mixed gas with a certain concentration; at the same time, the anesthetic in the medicine tank sequentially passes through the sixth pipe joint (12), the thirteenth pipe joint (25), the X2 hole, the X3 hole, the fourteenth pipe joint (26), the ninth pipe joint (21) and enters the right chamber of the cylinder block (15), realizing the process of simultaneously pushing the anesthetic and sucking the anesthetic; at this time, the A2 hole communicates the X4 hole with the outside world, and the outside air sequentially passes through the A2 hole, the X4 hole, the seventh pipe joint (13), the fifth pipe joint (11) and enters the medicine tank (9), thus realizing the air supplement process of the medicine tank; On the contrary, when the piston is at the leftmost end of the cylinder block, control the evaporation core motor (29) to rotate and drive the valve plate (28) on the evaporation core to rotate, so that the Y6 hole, Y8 hole and Y7 hole are communicated. Control the switching valve motor (32) to rotate and drive the valve plate (34) on the switching valve to rotate, so that the X2 hole is communicated with the X1 hole, and the A1 hole is communicated with the X4 hole. Then control the pump motor (19) to rotate and push the piston rod (16) to move rightward. The anesthetic in the right chamber of the cylinder block (15) sequentially passes through the eighth pipe joint (20), the second pipe joint (6), the Y3 hole, the Y7 hole, enters the Y6 hole and the Y8 hole, and then enters the fluid passage to be mixed with fresh air to form an anesthetic mixed gas with a certain concentration; at the same time, the anesthetic in the medicine tank sequentially passes through the sixth pipe joint (12), the thirteenth pipe joint (25), the X2 hole, the X1 hole, the twelfth pipe joint (24), the eleventh pipe joint (23) and enters the left chamber of the cylinder block (15), realizing the process of simultaneously pushing the anesthetic and sucking the anesthetic; at this time, the A1 hole communicates the X4 hole with the outside world, and the outside air sequentially passes through the A1 hole, the X4 hole, the seventh pipe joint (13), the fifth pipe joint (11) and enters the medicine tank (9), thus realizing the air supplement process of the medicine tank; 4) Shutdown state: Drive the valve plate (28) on the evaporation core and the valve plate (34) on the switching valve to rotate to the middle position, so that all interfaces are blocked, the anesthetic is stored in the pipeline, and the evaporator does not work.

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