Tube Pump

Abstract

To provide a tube pump which can inhibit influence of ambient air temperature to reduce carry-over without increasing power consumption.SOLUTION: A tube pump 15 includes: a tube 17 serving as a passage of a solution; a roller 19 which contacts with the tube 17 while rotating around a predetermined axis and may move along a longitudinal direction of the tube 17; and a pressing part 18 which cooperates with the roller 19 to sandwich the tube 17 and presses and crushes the tube 17 in a radial direction. The tube pump 15 includes a heat conduction member 21 which propagates heat for heating at least a part of the tube 17 from a heat source 22 included in a device which uses the tube pump 15.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a tube pump. [Background technology]

[0002] Among various pumps, tube pumps are widely used in medical equipment and analytical equipment because they are highly airtight and the pump itself does not affect the solution it pumps. The most common uses of tube pumps are for pumping solutions and for replacing solutions.

[0003] When using a tube pump in a low-temperature environment, the tube hardens and the solution flow rate decreases, which is a problem. As a solution to this problem, a structure in which part of the tube is heated is known in general tube pumps in order to ensure stable solution delivery regardless of the tube material or ambient temperature. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2012-132387 A Summary of the Invention [Problem to be solved by the invention]

[0005] In tube pumps used to replace solutions, there is a known problem that the solution that is sucked up may remain in the flow path and affect the solution that is sucked up again. This phenomenon is called carryover. When carryover occurs, the purity of the solution being pumped decreases. In medical and analytical equipment, this can be an issue that affects the reliability of the device.

[0006] Particularly in low-temperature environments, the tubes of the tube pump harden, reducing the flow rate of the solution and reducing the ability to replace the previously pumped solution, resulting in increased carryover.

[0007] Another object of the present invention is to provide a tube pump that can suppress the occurrence of carryover due to changes in ambient temperature. [Means for solving the problem]

[0008] The present invention provides a tube pump comprising a tube which is a flow path for a solution, a roller which rotates around a predetermined axis while contacting the tube and which can move along the longitudinal direction of the tube, and a pressing portion which cooperates with the roller to clamp the tube and crush the tube in the radial direction, and further comprising a heat conductive member which transmits heat for heating at least a portion of the tube from a heat source possessed by a device which uses the tube pump.

[0009] As one aspect of the present invention, for example, the heat conductive member transmits heat to the pressing portion and heats the tube via the pressing portion.

[0010] In one aspect of the present invention, for example, the device rotatably supports a plurality of rollers and further includes a rotatable rotor, and the thermal conduction member connects a motor that drives the rotor to the pressing portion, with the motor serving as the heat source.

[0011] In one aspect of the present invention, for example, the heat conductive member transfers heat to the roller, and heats the tube through the roller.

[0012] In one aspect of the present invention, for example, the heating device further includes a rotatable rotor that rotatably supports a plurality of rollers, and the heat conductive member is connected to the heat source and in contact with the rotor.

[0013] In one aspect of the present invention, for example, a heat exchanger connected to the thermally conductive member and the tube is used to heat the solution flowing through the tube, thereby heating the tube via the solution.

[0014] In one aspect of the present invention, for example, the tube and the heat conducting member are directly attached to the heat source and are constituted by a pipe through which the solution flows.

[0015] In one aspect of the present invention, for example, the heat conducting member is made of at least two materials having different thermal conductivities. Effect of the Invention

[0016] According to the present invention, in a tube pump capable of pumping and replacing a solution, it is possible to suppress the influence of the ambient temperature and reduce carryover without increasing power consumption. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a front view of a tube pump according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a block diagram of a spectrophotometer equipped with the tube pump of FIG. [Diagram 3] FIG. 3 is a diagram illustrating an example of a heat conductive member of a tube pump. [Figure 4] FIG. 4 is a diagram showing a modified example of the heat conducting member. [Diagram 5] FIG. 5 is a diagram showing a modified example of the heat conducting member. [Figure 6] FIG. 6 is a diagram showing a modified example of the heat conducting member. [Figure 7] FIG. 7 is a diagram showing a modified example of the heat conducting member. [Figure 8] FIG. 8 is a diagram showing a modified example of the heat conducting member. [Figure 9] FIG. 9 is a diagram showing a modified example of the heat conducting member. [Figure 10] FIG. 10 is a diagram showing a modified example of the heat conducting member. [Figure 11] FIG. 11 is a diagram showing a modified example of the heat conducting member. [Figure 12] FIG. 12 is a diagram showing a modified example of the heat conducting member. [Figure 13]FIG. 13 shows an example of a heat conducting member when the heat source is a columnar member, (A) being a front view and (B) being a side view. [Figure 14] FIG. 14 shows an example of a heat conducting member when the heat source is a flat plate-shaped member, (A) being a front view and (B) being a side view. [Figure 15] FIG. 15 shows an example of a tube pump in which the heat source is a motor, where (A) is a front view and (B) is a cross-sectional view taken along line II in (A). [Figure 16] FIG. 16 shows an example of a tube pump in which heat is transferred from a heat-conducting member via a rotor and rollers, where (A) is a front view and (B) is a cross-sectional view taken along line II-II in (A). [Figure 17] FIG. 17 is a diagram showing an example of a tube pump using a heat exchanger. [Figure 18] FIG. 18 shows an example of a pipe for performing heat exchange when the heat source is a columnar member, (A) being a front view and (B) being a side view. [Figure 19] FIG. 19 shows an example of a pipe for performing heat exchange when the heat source is a flat plate-shaped member, (A) being a front view and (B) being a side view. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, preferred embodiments of the tube pump according to the present invention will be described in detail with reference to the drawings. The tube pump is applied to a device that uses a solution, such as a spectrophotometer (see FIG. 2), and is used for delivering a solution or replacing a solution.

[0019] Fig. 1 shows one embodiment of a tube pump. The tube pump 15 in Fig. 1 includes an elastic tube (squeezing tube) 17, a rotor 20, rollers 19, a pressing portion 18, and a heat conductive member 21. The tube 17 is a flow path for a solution (sample solution) and is made of, for example, a hollow elastic member. The rotor 20 is a disk-shaped member that rotates in the direction of the arrow in Fig. 1 by, for example, a motor (see Fig. 15(B)), and multiple rollers 19 (four in this embodiment) are supported thereon at positions close to the outer edge of the disk of the rotor 20 so as to be rotatable about a predetermined axis.

[0020] When the rotor 20 rotates, the four rollers 19 move along a circumference close to the outer edge of the rotor 20, drawing a circular orbit with the center point of the rotor 20 as the center. The rollers 19 in contact with the tube 17 rotate about their respective axes due to friction with the tube 17. That is, when the rollers 19 are in contact with the tube 17, they move along the longitudinal direction of the tube 17 while rotating on their own axes. Then, the pressing parts 18 cooperate with the rollers 19 to pinch the tube 17 and crush the tube 17 in the radial direction. The tube 17 subjected to such a squeezing action is also called a squeezed tube.

[0021] That is, the tube pump 15 has a function of continuously squeezing the tube 17 in the radial and longitudinal directions by the pressing of the holding portion 18 against the tube 17 and the movement of the multiple rotating rollers 19 accompanying the rotation of the rotor 20, thereby sending the solution from the sample container 2 to the waste liquid container 16. Furthermore, the tube pump 15 of this embodiment is provided with a heat conductive member 21, one end of which is attached to the holding portion 18 and the other end of which is in contact with a predetermined heat source 22. As a result, heat from the heat source 22 is transmitted to the holding portion 18 via the heat conductive member 21, and the tube 17 can be heated by the heat from the holding portion 18.

[0022] An example in which the tube pump according to an embodiment of the present invention functions as a device used to exchange a sample solution in a spectrophotometer will be described below. FIG. 2 shows a spectrophotometer 1 equipped with the tube pump 15 of FIG. 1. The tube pump 15 sends the sample solution from the sample container 2 to the flow cell 4 in the measurement unit 3. Inside the measurement unit 3, a light source unit 7, a spectroscope unit 11, a mirror 12, the flow cell 4, a photodetector 13, and a control unit 14 are provided. The light source unit 7 has a tungsten lamp 5 and a deuterium discharge tube 6 used as a light source of the spectrometer. The spectroscope unit 11 has an entrance slit 8 for extracting only a target wavelength from the light of the light source unit 7, a diffraction grating 9, and an exit slit 10. The light (measurement light) dispersed by the spectroscope unit 11 is guided to the flow cell 4 by the mirror 12 and passes through the measurement sample in the flow cell 4. The light intensity of the measurement light after passing through the flow cell 4 is measured by the photodetector 13. The detection signal is processed by the control unit 14.

[0023] The tube pump 15 is provided to send the solution to be measured from the sample container 2 through the flow path 33 to the flow cell 4 and replace the solution in the flow cell 4. Furthermore, the tube pump 15 sends the solution after the measurement to a waste liquid container 16.

[0024] One end of the heat conductive member 21 is connected to the holding portion 18 of the tube pump 15, and the other end is disposed in the light source portion 7 used as a heat source 22 (FIG. 1). With this configuration, the heat conductive member 21 transmits heat from the light source portion 7 to the holding portion 18, which heats the tube 17. In addition, a temperature sensor 23 is disposed on one end of the heat conductive member 21, above the holding portion 18, and information about the temperature measured by the temperature sensor 23 is sent to the control portion 14, which records the temperature.

[0025] The fan 24 installed for cooling the light source is used to adjust the temperature of the heat conductive member 21. The control unit 14 adjusts the air volume of the fan 24 so that the value of the temperature sensor 23 becomes the target temperature. This allows the fan 24 to maintain the temperature of the heat conductive member 21 at the target temperature.

[0026] In this embodiment, the target temperature is determined from the properties of the tube 17 and the sample solution to be delivered. In this embodiment, the target temperature is set to, for example, 35° C., at which the softened polyvinyl chloride tube 17 has sufficient elasticity and does not affect the solution to be measured. Specifically, when the temperature value sent from the temperature sensor 23 is equal to or lower than the target value, the rotation speed of the fan 24 is reduced to increase the temperature of the heat conductive member 21. Conversely, when the temperature value sent from the temperature sensor 23 is equal to or higher than the target value, the rotation speed of the fan 24 is increased to decrease the temperature of the heat conductive member 21.

[0027] The operation of the tube pump 15 thus configured will be described. According to this embodiment, even if the tube 17 is made of a material whose elasticity is easily changed by temperature, such as softened polyvinyl chloride, the tube 17 is always kept at a predetermined temperature (for example, 35°C in this example) by the action of the heat conductive member 21, so that the tube 17 is kept in a sufficiently elastic state. Therefore, the decrease in flow rate caused by the tube 17 becoming hard is improved, and carryover can be reduced.

[0028] In addition, since it does not use any power-consuming components, power consumption is the same as conventional models.

[0029] In this embodiment, the light source 7 composed of the tungsten lamp 5 and deuterium discharge tube 6 is used as the heat source 22, but any part that generates heat in a device using a tube pump (the spectrophotometer 1 in this example) can be used as the heat source 22. For example, a motor, electronic parts, power supply circuit, etc. inside the device can be used. It is desirable for the part used as the heat source to generate heat at a constant temperature as much as possible.

[0030] In this embodiment, temperature control is performed using a temperature sensor 23 installed near the tube 17 of the heat conductive member 21, but the position of the temperature sensor 23 is not limited to this, and may be any position where the temperature of the heat conductive member 21 can be measured. For example, the temperature sensor may be installed in the center of the heat conductive member 21 in the longitudinal direction or near the heat source 22 (e.g., the light source unit 7). Furthermore, if the correlation between the temperature of the heat source 22 and the temperature of the tube 17 is not clear, the temperature of the tube 17 may be measured directly. However, if there is no risk of excessive heating, the temperature sensor and temperature control are not necessarily required.

[0031] The heating temperature of the tube 17 can be changed by changing the material of the heat conductive member 21. For example, when a material with high thermal conductivity such as copper or aluminum is used, the temperature drop from the heat source 22 to the heating target (for example, the pressing part 18) can be suppressed, and the temperature of the heating target can be increased. In addition, when a material with relatively low thermal conductivity such as stainless steel, brass, or iron is used, the heat is less likely to be transmitted from the heat source 22 to the heating target, and the temperature can be reduced. The heat conductive member 21 can be made of any material having a thermal conductivity coefficient of 15 to 400 [W / (m·K)], such as copper, aluminum, brass, or stainless steel, which is used as a structural material. In particular, it is desirable to use a material having a thermal conductivity coefficient of about 200 to 400 [W / (m·K)], which is generally used as a heat conductive material.

[0032] In addition, the heating temperature of the tube 17 can be adjusted by forming the heat conductive member 21 from a plurality of materials. For example, as shown in FIG. 3, in a structure in which two materials with different thermal conductivities, a high thermal conductor 25 and a low thermal conductor 26, are layered and joined together, the amount of heat transferred to the tube through the heating target 27 (for example, the pressing part 18 in FIG. 1) can be adjusted by changing the ratio of the amount of each material, and the temperature can be changed. As shown in FIG. 4, by increasing the length ratio of the high thermal conductor 25, the temperature of the tube can be increased because heat is easily transferred from the heat source 22. On the other hand, as shown in FIG. 5, by increasing the length ratio of the low thermal conductor 26, the temperature of the tube can be decreased because heat is less easily transferred from the heat source 22. In this way, it is possible to adjust the heating temperature of the tube by using a plurality of materials with different thermal conductivities and changing the ratio of their lengths.

[0033] The amount of heat transferred to the tube can be adjusted by changing the contact area of ​​each material of the above-mentioned heat-conducting member, and the heating temperature can also be adjusted. For example, in the heat-conducting member 21 having a shape in which a high heat conductor 25 and a low heat conductor 26 are overlapped and joined as shown in FIG. 6, when the contact area is large, heat is easily transferred from the high heat conductor 25 to the heating target 27, so that the temperature of the tube can be increased. On the other hand, when the contact area is reduced as shown in FIG. 7, heat is less easily transferred from the high heat conductor 25 to the heating target 27, so that the temperature of the tube can be decreased. In this way, the heating temperature of the tube can be adjusted by changing the contact area of ​​multiple materials with different thermal conductivities.

[0034] The heat conducting member 21 shown in Figures 3 to 7 is composed of two materials with different thermal conductivities, but the number of materials may be three or more. By constructing the heat conducting member 21 from at least two materials with different thermal conductivities, it becomes possible to adjust the heating temperature of the tube as described above.

[0035] 8 is constituted by a heat pipe 29 containing a working liquid 28. Heat can also be transferred from the heat source 22 to the object 27 to be heated by utilizing the heat of vaporization of the working liquid 28.

[0036] The heating temperature can also be adjusted by changing the shape of the portion of the heat conductive member 21 that contacts the heat source 22. Fig. 9 shows an example in which the end of the heat conductive member 21 placed near the heat source 22 is fin-shaped, which can suppress the heat transferred from the heat source 22 to the heat conductive member 21 and lower the heating temperature. Fig. 10 shows an example in which the end of the heat conductive member 21 placed near the heat source 22 is corrugated, which can suppress the heat transferred from the heat source 22 to the heat conductive member 21 and lower the heating temperature.

[0037] The heat conduction between the heat source 22 and the heat conductive member 21 may be such that the heat source 22 and the heat conductive member 21 are in contact with each other and heat is directly conducted from the heat source 22 to the heat conductive member 21, but a gap may be provided between the heat source 22 and the heat conductive member 21 and heat may be conducted to the heat conductive member 21 via air using radiant heat from the heat source 22. Either of these modes can provide the same effect.

[0038] The heating temperature can also be adjusted by changing the shape of the portion of the heat conductive member 21 that contacts the heating target 27. Fig. 11 shows an example in which the end of the heat conductive member 21 placed near the heating target 27 is fin-shaped, and heat is dissipated from the fin-shaped portion, suppressing heat transfer to the heating target 27 and lowering the heating temperature. Fig. 12 shows an example in which the end of the heat conductive member 21 placed near the heating target 27 is corrugated, and the heat transferred from the heat source 22 to the heat conductive member 21 can be reduced, and the heating temperature can be lowered.

[0039] FIG. 13 shows an example of the heat conducting member 21 when the heat source 22 is a columnar member in a device (e.g., a spectrophotometer 1) using a tube pump 15. The heat conducting member 21 of this example is a coil-shaped member wound around the columnar heat source 22, and the contact area with the heat source 22 is increased, and the amount of heat taken in by the heat conducting member 21 can be increased, so that the heating temperature of the tube can be increased. FIG. 14 shows an example of the heat conducting member 21 when the heat source 22 is a flat-plate-shaped member in a device (e.g., a spectrophotometer 1) using a tube pump. The heat conducting member 21 of this example is a bellows-shaped member arranged on the main plane of the flat-plate-shaped heat source 22, and the contact area with the heat source 22 is increased, and the amount of heat taken in by the heat conducting member 21 can be increased, so that the heating temperature of the tube can be increased.

[0040] 15 shows an example of a tube pump 15 in which a motor 32 that rotates a rotor 20 is used as a heat source 22. By using a heat source 22 (motor 32) that is placed near a pressing portion 18 that crushes the tube 17, heat can be efficiently transferred from the heat source 22 to the tube 17. However, even if the distance between the pressing portion 18 and the heat source 22 is long, there is no problem as long as the structure is such that the tube 17 can be heated.

[0041] 16 shows an example of a tube pump 15 in which heat is transferred from a heat conductive member 21 via a rotor 20 and rollers 19. In a structure in which the heat conductive member 21, the rotor 20, and the rollers 19 are adjacent to each other, the heat conductive member 21 is in contact with the rotor 20 that is driven to rotate, and is connected to a heat source 22, and the rotor 20 and rollers 19 are heated by the heat conductive member 21. With the rollers 19 in contact with the tubes 17, heat is transferred to the tubes 17 via the rotor 20 and rollers 19, and the tubes 17 can be heated. Note that the heat conductive member 21 may be configured to be in direct contact with each roller 19, and heat may be transferred from the heat conductive member 21 to the tubes 17 via the rollers 19.

[0042] In the above-mentioned embodiment, the tube 17 is heated from the heat source 22 and the heat conductive member 21 via predetermined members such as the pressing portion 18, the rotor 20, and the roller 19. However, the method of heating the tube 17 is not limited to this. In FIG. 17, heat exchanger 30 connected to the heat conductive member 21 and the tube 17 is used to exchange heat with the sample solution flowing through the tube 17, warming the sample solution and further heating the tube 17 via the sample solution. Even with such a method, the elasticity of the tube can be maintained and the same effect as in the above-mentioned embodiment can be obtained.

[0043] In the above example, the heat exchanger 30 is disposed between the heat conducting member 21 and the tube 17. However, a configuration in which the heat exchanger 30 directly transfers the heat obtained from the heat source 22 to the sample solution may also be adopted.

[0044] 18 shows an example of a pipe for heat exchange when heat source 22 is a columnar member inside an apparatus (e.g., spectrophotometer 1) using tube pump 15. Pipe 31 is a hollow pipe in a coil shape wound around columnar heat source 22, and a sample solution flows through pipe 31. That is, pipe 31 functions as a tube that is a flow path for the solution, and also functions as a heat conductive member that transfers heat from heat source 22 to the tube and, ultimately, to the sample solution.

[0045] 19 shows an example of a pipe for heat exchange when heat source 22 is a flat member in an apparatus (e.g., spectrophotometer 1) using tube pump 15. Pipe 31 is a hollow pipe that is a bellows-shaped member arranged on the main plane of flat heat source 22, and a sample solution flows through pipe 31. That is, pipe 31 functions as a tube that is a flow path for the solution, and also functions as a heat conductive member that transfers heat from heat source 22 to the tube and, ultimately, to the sample solution.

[0046] 18 and 19, the tube and heat conductive member are directly attached to the heat source 22 and are configured by a pipe 31 through which the solution flows. Therefore, the temperature of the solution can be adjusted by the number of turns of the pipe 31 directly attached to the heat source 22, the number of stages of the bellows shape, the size, etc. By increasing the number of turns or stages, the time that the solution is in contact with the heat source 22 can be increased, and the container temperature can be increased. Also, the temperature of the container can be lowered by reducing the number of turns or stages.

[0047] The solution temperature can also be changed by the material of the pipe 31. When increasing the solution temperature, a material with high thermal conductivity is used for the pipe 31, which reduces the loss when transferring heat from the heat source 22 to the solution and allows the solution temperature to be increased. When decreasing the solution temperature, a material with low thermal conductivity is used, which makes it difficult for heat to be transferred to the solution and prevents the temperature of the solution from increasing.

[0048] Furthermore, the solution temperature can be changed by changing the distance between heat source 22 and pipe 31. To increase the solution temperature, the distance between heat source 22 and pipe 31 is reduced. This reduces the loss when transferring heat from heat source 22 to the solution, and the solution temperature can be increased. To decrease the solution temperature, the distance between heat source 22 and pipe 31 is increased, making it more difficult for heat to be transferred to the solution, and suppressing the increase in solution temperature.

[0049] Furthermore, the temperature of the solution can be changed by placing a thermally conductive material or a thermal insulating material between the heat source 22 and the pipe 31. When increasing the temperature of the solution, it is possible to efficiently transfer heat from the heat source 22 to the pipe 31 and heat the solution by placing a material with high thermal conductivity, such as grease, between the heat source 22 and the pipe 31. When decreasing the temperature of the solution, it is possible to suppress the temperature rise of the solution by placing a material with low thermal conductivity between the heat source 22 and the pipe 31, making it difficult for heat to be transferred to the solution.

[0050] Since the temperature of the tube 17 is substantially the same as the temperature of the solution, it is sufficient if the temperature of the solution can be measured using the temperature sensor 23. If the relationship between the temperatures of the heat source 22 and the pipe 31 and the temperature of the solution is known, the temperature of the tube 17 can be predicted by measuring them.

[0051] The solution may be heated using a heat source such as a heater provided in the device, and the type of the heat source is not particularly limited. Even when a heater is used, the tube 17 is heated via the sample solution, so that the same effect can be obtained.

[0052] Although the tube pump 15 of the above-described embodiment is applied to the spectrophotometer 1, the device to which the tube pump 15 is applied is not limited to the spectrophotometer 1, and the tube pump 15 can be applied to medical devices, analytical devices, and other devices in which carryover can be a problem, and can be effective.

[0053] In addition, according to the present embodiment, by using the exhaust heat from inside the device using the tube pump, it is possible to reduce carryover without increasing power consumption. Furthermore, it is also possible to cool the heat source.

[0054] The present invention is not limited to the above-described embodiment, and can be appropriately modified, improved, etc. In addition, the material, shape, size, numerical value, form, number, arrangement location, etc. of each component in the above-described embodiment are arbitrary as long as they can achieve the present invention, and are not limited. [Explanation of symbols]

[0055] 1 spectrophotometer 2. Sample container 3 Measuring part 4 Flow Cell 5. Tungsten Lamp 6 Deuterium Lamp 7 Light source section 8 Entrance slit 9. Diffraction Grating 10 Exit slit 11 Spectrometer section 12. Mirror 13 Photodetector 14 Control section 15 Tube Pump 16 Waste liquid container 17 Tube 18 Holding part 19. Lola 20 Rotors 21 Thermal Conductive Materials 22 Heat source 23 Temperature Sensor 24 Fans 25 High thermal conductor 26 Low thermal conductor 27 Heating target 28 Hydraulic Fluid 29 Heat Pipe 30 heat exchanger 31 Pipe 32 Motor 33 Flow Path

Claims

1. A tube which is a flow path for a solution; a roller that rotates about a predetermined axis and comes into contact with the tube and is movable along the longitudinal direction of the tube; A tube pump including a pressing portion that cooperates with the roller to pinch the tube and crush the tube in a radial direction, a heat conductive member that transmits heat for heating at least a part of the tube from a heat source of an apparatus that uses the tube pump; The heat conductive member has one end connected to a heating target and the other end disposed in the heat source, and transmits heat to the heating target and heats the tube via the heating target. Tube pump.

2. 2. The tube pump according to claim 1, The heat conductive member transfers heat to the holding portion, and heats the tube via the holding portion.

3. 3. The tube pump according to claim 2, The rollers are rotatably supported, and a rotor is further provided that is rotatable. The heat conductive member connects a motor that drives the rotor to the pressing portion, the motor being the heat source.

4. 2. The tube pump according to claim 1, The heat conductive member transfers heat to the roller, and heats the tube through the roller.

5. 5. The tube pump according to claim 4, The rollers are rotatably supported, and a rotor is further provided that is rotatable. The heat conductive member is connected to the heat source and in contact with the rotor.

6. 2. The tube pump according to claim 1, A tube pump that uses a heat exchanger connected to the heat conducting member and the tube to heat a solution flowing through the tube, thereby heating the tube via the solution.

7. 2. The tube pump according to claim 1, A tube pump, wherein the tube and the heat conducting member are attached directly to the heat source and are constituted by a pipe through which the solution flows.

8. 8. The tube pump according to claim 1, A tube pump, wherein the heat conducting member is made of at least two materials having different thermal conductivities.

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