WO2015047159A1 - Guiding mechanism for a sample holder in a sample isothermal calorimeter - Google Patents
Guiding mechanism for a sample holder in a sample isothermal calorimeter Download PDFInfo
- Publication number
- WO2015047159A1 WO2015047159A1 PCT/SE2014/050954 SE2014050954W WO2015047159A1 WO 2015047159 A1 WO2015047159 A1 WO 2015047159A1 SE 2014050954 W SE2014050954 W SE 2014050954W WO 2015047159 A1 WO2015047159 A1 WO 2015047159A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sample holder
- guiding mechanism
- vials
- sample
- contact
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/48—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on solution, sorption, or a chemical reaction not involving combustion or catalytic oxidation
- G01N25/4846—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on solution, sorption, or a chemical reaction not involving combustion or catalytic oxidation for a motionless, e.g. solid sample
- G01N25/4853—Details
- G01N25/486—Sample holders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/48—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on solution, sorption, or a chemical reaction not involving combustion or catalytic oxidation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K17/00—Measuring quantity of heat
Definitions
- the present invention relates to a guiding mechanism for insertion and retrieval of a sample holder for sample vials in a sample isothermal calorimeter with horizontal sample insertion and retrieval.
- Patent publication WO 2007/139498 discloses parallel sample isothermal calorimetry performed using microtiter plate layout where horizontal sample loading requires a mechanism to enter the sample plate to the equilibrium and measurement positions respectively. Sample insertion by horizontal movement allows contact between the thermostatic regulated inner surfaces of the pre heating equilibrium chamber via the vial bottom to allow heat transfer to occur.
- the vials Upon transferring the vials to the measurement position the vials are positioned to heat flow sensitive sensors.
- the present invention teaches that that the guiding mechanism
- the guiding mechanism is adapted to lower the sample holder to place any vials in the sample holder in contact with the underlying surface of the calorimeter only when the correct position for such contact is reached and to lift the sample holder so that there is no contact between any vials in the sample holder and underlying surface during other parts of the horizontal movement.
- a first position for contact between any vials in the sample holder and the underlying surface is in a position for equilibrium.
- the underlying surface may be a thermostatic regulated inner surface of a pre heating equilibrium chamber, where the contact allow heat transfer to occur between the vial sample and the thermostatic regulated surface via the vial bottom.
- a second position for contact between any vials in the sample holder and the underlying surface is in a position for measurement.
- the underlying surface comprises heat flow sensitive sensors used for measurements. It is proposed that the second position is adapted to guide the sample holder into position where a pairing of sensors and vials is achieved.
- the present invention teaches that the vertical movement provided by the guiding mechanism in any position where any vials in the sample holder are to be in contact with the underlying surface is adapted to be at least sufficient to release any vial from the vertical lifting force of the sample holder.
- the guide rails can be built into a frame of the sample holder, in which case the guide pins are built into enclosing material of the calorimeter.
- the guide rails are built into enclosing material of the calorimeter, in which case the guide pins are built into a frame of the sample holder.
- Figure 1 is a schematic and simplified side view of a calorimeter with an inventive guiding mechanism where a sample holder is in a first position
- Figure 2 is a schematic and simplified cross sectional front view of a calorimeter with an inventive guiding mechanism
- Figure 3 is a schematic and simplified side view of a calorimeter with an inventive guiding mechanism where a sample holder is in a second position
- Figure 4 is a schematic and simplified side view of a calorimeter and its different areas for equilibrium and measurement
- Figure 5 is a schematic and simplified side view of a calorimeter with an inventive guiding mechanism according to an alternative embodiment where a sample holder is in a first position
- Figure 6 is a schematic and simplified cross sectional front view of a calorimeter with an alternative embodiment of inventive guiding mechanism
- Figure 7 is a schematic and simplified side view of a calorimeter with an inventive guiding mechanism according to an alternative embodiment where a sample holder is in a second position.
- FIG. 1 showing a guiding mechanism 1 for insertion and retrieval of a sample 2 holder for sample vials in a sample isothermal calorimeter 3 with horizontal sample insertion and retrieval.
- the guiding mechanism 1 comprises guide rails 41 and guide pins 51 , 52, 53 adapted to provide a vertical movement of the sample holder 2 during the horizontal inserting and retrieving movement.
- Figure 2 is a cross sectional front view of the guiding mechanism 1 showing both guide rails 41 , 42 on both sides of the sample holder 2 and guide pins 51 , 54 in the calorimeter 3.
- Figure 1 shows a position where the sample holder 2 lowered by the guiding mechanism 1 to place any vials 61 , 62, 6n in the sample holder 2 in contact with the underlying surface 31 of the calorimeter 3.
- the guiding mechanism 1 shows a position where the sample holder 2 lowered by the guiding mechanism 1 to place any vials 61 , 62, 6n in the sample holder 2 in contact with the underlying surface 31 of the calorimeter 3.
- mechanism 1 is adapted to provide such vertical lowering movement only when the correct position for such contact is reached and, as can be seen in figure 3, to lift the sample holder so that there is no contact between any vials 61 , 62, 6n in the sample holder 2 and underlying surface 31 during other parts of the horizontal movement.
- Figure 4 shows a calorimeter 3 with horizontal sample insertion and retrieval where it can be seen that a first position P1 for contact between any vials in the sample holder and the underlying surface 31 1 is in a position for equilibrium.
- the underlying surface 31 1 in the first position P1 is a thermostatic regulated inner surface 32 of a pre heating equilibrium chamber. In this position the contact allow heat transfer to occur between the vial sample and the
- thermostatic regulated surface 32 via the vial bottom in its contact with the surface 31 1 .
- a second position P2 for contact between any vials in the sample holder and the underlying surface 312 is in a position for measurement.
- the underlying surface 312 in the second position P2 comprises heat flow sensitive sensors 33 used for measurements.
- the guiding mechanism is adapted to guide the sample holder into a position where pairing of sensors 33 and vials is achieved.
- the present invention teaches that the vertical movement provided by the guiding mechanism in any position where any vials in the sample holder are to be in contact with the underlying surface is adapted to be at least sufficient to release any vial from the vertical lifting force of the sample holder in order for each vial to rest on the surface and have a good thermal contact with the surface.
- Figures 1 , 2 and 3 shows an embodiment where the guide rails 41 , 42 are built into a frame of the sample holder 2 and the guide pins 51 , 52, 53, 54 are built into enclosing material of the calorimeter 3.
- the distance d1 between a first and second part 41 a, 41 b on one side differs from the distance d2 between the second and third part 41 b, 41 c on the same side, and that the guide pins 51 , 52, 53 are positioned to match the parts at the correct position providing for a contact between any vials and the underlying surface.
- Figures 1 and 3 shows guide pins required to lower the sample holder in one position so it can be understood that at least six guide pins are used for one side in order to provide two separate positions where the sample holder can be lowered.
- Figures 5, 6 and 7 shows an alternative embodiment where the guide rails 43, 44 are built into enclosing material of the calorimeter 3 and that the guide pins
Abstract
The present invention relates to a guiding mechanism (1) for insertion and retrieval of a sample holder (2) for sample vials in a sample isothermal calorimeter (3) with horizontal sample insertion and retrieval. The guiding mechanism (1) comprises guide rails (41) and guide pins (51, 52, 53) adapted to provide a vertical movement of the sample holder (2) during the horizontal inserting and retrieving movement. The guiding mechanism (1) is adapted to lower the sample holder (2) to place any vials (61, 62, …, 6n) in the sample holder (2) in contact with the underlying surface (31) of the calorimeter (3) only when the correct position for such contact is reached and to lift the sample holder (2) so that there is no contact between any vials (61, 62, …, 6n)in the sample holder (2) and underlying surface (31) during other parts of the horizontal movement.
Description
GUIDING MECHANISM FOR A SAMPLE HOLDER IN A SAMPLE ISOTHERMAL
CALORIMETER
Field of invention
The present invention relates to a guiding mechanism for insertion and retrieval of a sample holder for sample vials in a sample isothermal calorimeter with horizontal sample insertion and retrieval.
Description of background art
Patent publication WO 2007/139498 discloses parallel sample isothermal calorimetry performed using microtiter plate layout where horizontal sample loading requires a mechanism to enter the sample plate to the equilibrium and measurement positions respectively. Sample insertion by horizontal movement allows contact between the thermostatic regulated inner surfaces of the pre heating equilibrium chamber via the vial bottom to allow heat transfer to occur.
Upon transferring the vials to the measurement position the vials are positioned to heat flow sensitive sensors.
Summary of the present invention Problems
A horizontal movement where sample vials are moved across the heat- flow sensors creates a contact friction heat of a magnitude large enough to interfere with measurements in the nano to micro Watt scale. This results in a long and undesired recovery time prior to equilibrium. Another problem is potential static electricity buildup that needs to be minimized.
Mechanical and geometrical constraints further prevents the sample vials to freely pass over multiple rows of sensor used in multi-channel plate format calorimetry as described patent publication WO 2007/139498. Solution
From the standpoint of a guiding mechanism according to the field of invention and with the purpose of solving one or more of the above mentioned problems, the present invention teaches that that the guiding mechanism
comprises guide rails and guide pins adapted to provide a vertical movement of
the sample holder during the horizontal inserting and retrieving movement. The guiding mechanism is adapted to lower the sample holder to place any vials in the sample holder in contact with the underlying surface of the calorimeter only when the correct position for such contact is reached and to lift the sample holder so that there is no contact between any vials in the sample holder and underlying surface during other parts of the horizontal movement.
A first position for contact between any vials in the sample holder and the underlying surface is in a position for equilibrium. In this position the underlying surface may be a thermostatic regulated inner surface of a pre heating equilibrium chamber, where the contact allow heat transfer to occur between the vial sample and the thermostatic regulated surface via the vial bottom.
A second position for contact between any vials in the sample holder and the underlying surface is in a position for measurement. In this position the underlying surface comprises heat flow sensitive sensors used for measurements. It is proposed that the second position is adapted to guide the sample holder into position where a pairing of sensors and vials is achieved.
The present invention teaches that the vertical movement provided by the guiding mechanism in any position where any vials in the sample holder are to be in contact with the underlying surface is adapted to be at least sufficient to release any vial from the vertical lifting force of the sample holder.
The guide rails can be built into a frame of the sample holder, in which case the guide pins are built into enclosing material of the calorimeter.
With the guide rails in the frame of the sample holder it is proposed that three parts of the guide rails that are adapted to lower the sample holder are built unto each side of the frame, that the distance between a first and second part on one side differs from the distance between the second and third part on the same side, and that the guide pins are positioned to match the parts at the correct position for providing a contact between any vials and the underlying surface.
It is also possible that the guide rails are built into enclosing material of the calorimeter, in which case the guide pins are built into a frame of the sample holder.
With the guide pins in the frame of the sample holder it is proposed that three guide pins are built unto each side of the frame, that the distance between a first and second guide pin on one side differs from the distance between the
second and third guide pin on the same side, and that the parts of the guide rails that are adapted to lower the sample holder are positioned to match the guide pins at the correct position for providing a contact between any vials and the underlying surface.
Advantages
The advantages of a guiding mechanism according to the present invention are that the friction between vial and sensor is minimized and
measurement equilibrium is acquired at a fast pace compared to multiple friction heat buildup.
The completely mechanical execution of transfer from horizontal to vertical movement allows for a high degree of reliability and ease of construction.
Brief description of the drawings
A guiding mechanism according to the present invention will now be described in detail with reference to the accompanying drawings, in which:
Figure 1 is a schematic and simplified side view of a calorimeter with an inventive guiding mechanism where a sample holder is in a first position,
Figure 2 is a schematic and simplified cross sectional front view of a calorimeter with an inventive guiding mechanism,
Figure 3 is a schematic and simplified side view of a calorimeter with an inventive guiding mechanism where a sample holder is in a second position,
Figure 4 is a schematic and simplified side view of a calorimeter and its different areas for equilibrium and measurement,
Figure 5 is a schematic and simplified side view of a calorimeter with an inventive guiding mechanism according to an alternative embodiment where a sample holder is in a first position, Figure 6 is a schematic and simplified cross sectional front view of a calorimeter with an alternative embodiment of inventive guiding mechanism, and
Figure 7 is a schematic and simplified side view of a calorimeter with an inventive guiding mechanism according to an alternative embodiment where a sample holder is in a second position. Description of embodiments as presently preferred
The present invention will now be described with reference to figure 1 showing a guiding mechanism 1 for insertion and retrieval of a sample 2 holder for sample vials in a sample isothermal calorimeter 3 with horizontal sample insertion and retrieval.
It can be seen that the guiding mechanism 1 comprises guide rails 41 and guide pins 51 , 52, 53 adapted to provide a vertical movement of the sample holder 2 during the horizontal inserting and retrieving movement. Figure 2 is a cross sectional front view of the guiding mechanism 1 showing both guide rails 41 , 42 on both sides of the sample holder 2 and guide pins 51 , 54 in the calorimeter 3.
Figure 1 shows a position where the sample holder 2 lowered by the guiding mechanism 1 to place any vials 61 , 62, 6n in the sample holder 2 in contact with the underlying surface 31 of the calorimeter 3. The guiding
mechanism 1 is adapted to provide such vertical lowering movement only when the correct position for such contact is reached and, as can be seen in figure 3, to lift the sample holder so that there is no contact between any vials 61 , 62, 6n in the sample holder 2 and underlying surface 31 during other parts of the horizontal movement.
Figure 4 shows a calorimeter 3 with horizontal sample insertion and retrieval where it can be seen that a first position P1 for contact between any vials in the sample holder and the underlying surface 31 1 is in a position for equilibrium.
The underlying surface 31 1 in the first position P1 is a thermostatic regulated inner surface 32 of a pre heating equilibrium chamber. In this position the contact allow heat transfer to occur between the vial sample and the
thermostatic regulated surface 32 via the vial bottom in its contact with the surface 31 1 .
A second position P2 for contact between any vials in the sample holder and the underlying surface 312 is in a position for measurement.
The underlying surface 312 in the second position P2 comprises heat flow sensitive sensors 33 used for measurements. In this position the guiding
mechanism is adapted to guide the sample holder into a position where pairing of sensors 33 and vials is achieved.
Uneven sizes of the vials, an uneven surface in the equilibrium chamber and sensors in the measurement position that are not all positioned in the exact same horizontal plane will cause the vials to stand on different heights in relation to each other and to the sample holder when in contact with the underlying surface. Hence, the present invention teaches that the vertical movement provided by the guiding mechanism in any position where any vials in the sample holder are to be in contact with the underlying surface is adapted to be at least sufficient to release any vial from the vertical lifting force of the sample holder in order for each vial to rest on the surface and have a good thermal contact with the surface.
Figures 1 , 2 and 3 shows an embodiment where the guide rails 41 , 42 are built into a frame of the sample holder 2 and the guide pins 51 , 52, 53, 54 are built into enclosing material of the calorimeter 3.
Here it can be seen that three parts 41 a, 41 b, 41 c of the guide rails 41 that are adapted to lower the sample holder 2 are built unto each side of the frame.
With the purpose of providing a reliable movement of the sample holder 2 it is proposed that the distance d1 between a first and second part 41 a, 41 b on one side differs from the distance d2 between the second and third part 41 b, 41 c on the same side, and that the guide pins 51 , 52, 53 are positioned to match the parts at the correct position providing for a contact between any vials and the underlying surface.
Figures 1 and 3 shows guide pins required to lower the sample holder in one position so it can be understood that at least six guide pins are used for one side in order to provide two separate positions where the sample holder can be lowered.
Figures 5, 6 and 7 shows an alternative embodiment where the guide rails 43, 44 are built into enclosing material of the calorimeter 3 and that the guide pins
55, 56, 57, 58 are built into a frame of the sample holder 2.
Here it can be seen that three guide pins 55, 56, 57 are built unto each side of the frame, that the distance d3 between a first and second guide pin 55, 56 on one side differs from the distance d4 between the second and third guide pin
56, 57 on the same side, and that the parts 43a, 43b, 43c of the guide rails 43 that are adapted to lower the sample holder 2 are positioned to match the guide pins
55, 56, 57 at the correct position for providing a contact between any vials 61 , 62, 6n and the underlying surface 31 .
It will be understood that the invention is not restricted to the aforede- scribed and illustrated exemplifying embodiments thereof and that modifications can be made within the scope of the invention as defined by the accompanying Claims.
Claims
1 . A guiding mechanism for insertion and retrieval of a sample holder for sample vials in a sample isothermal calorimeter with horizontal sample insertion and retrieval, characterized in, that the guiding mechanism comprises guide rails and guide pins adapted to provide a vertical movement of the sample holder during the horizontal inserting and retrieving movement, that the guiding
mechanism is adapted to lower the sample holder to place any vials in the sample holder in contact with the underlying surface of the calorimeter only when the correct position for such contact is reached and to lift the sample holder so that there is no contact between any vials in the sample holder and underlying surface during other parts of the horizontal movement.
2. A guiding mechanism according to claim 1 , characterized in, that a first position for contact between any vials in the sample holder and the underlying surface is in a position for equilibrium.
3. A guiding mechanism according to claim 2, characterized in, that the underlying surface in the first position is a thermostatic regulated inner surface of a pre heating equilibrium chamber, and that the contact allow heat transfer to occur between the vial sample and the thermostatic regulated surface via the vial bottom.
4. A guiding mechanism according to any preceding claim, characterized in, that a second position for contact between any vials in the sample holder and the underlying surface is in a position for measurement.
5. A guiding mechanism according to claim 4, characterized in, that the underlying surface in the second position comprises heat flow sensitive sensors used for measurements.
6. A guiding mechanism according to claim 5, characterized in, that the second position is adapted to guide the sample holder into a position where pairing of sensors and vials is achieved.
7. A guiding mechanism according to any preceding claim, characterized in, that the vertical movement provided by the guiding mechanism in any position where any vials in the sample holder are to be in contact with the underlying surface is adapted to be at least sufficient to release any vial from the vertical lifting force of the sample holder.
8. A guiding mechanism according to any preceding claim, characterized in, that the guide rails are built into a frame of the sample holder and that the guide pins are built into enclosing material of the calorimeter.
9. A guiding mechanism according to claim 8, characterized in, that three parts of the guide rails that are adapted to lower the sample holder are built unto each side of the frame, that the distance between a first and second part on one side differs from the distance between the second and third part on the same side, and that the guide pins are positioned to match the parts at the correct position providing for a contact between any vials and the underlying surface.
10. A guiding mechanism according to any one of claims 1 to 7,
characterized in, that the guide rails are built into enclosing material of the calorimeter and that the guide pins are built into a frame of the sample holder.
1 1 . A guiding mechanism according to claim 10, characterized in, that three guide pins are built unto each side of the frame, that the distance between a first and second guide pin on one side differs from the distance between the second and third guide pin on the same side, and that the parts of the guide rails that are adapted to lower the sample holder are positioned to match the guide pins at the correct position for providing a contact between any vials and the underlying surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1351147A SE538154C2 (en) | 2013-09-30 | 2013-09-30 | Control mechanism for insertion and withdrawal of a sample holder in an isothermal calorimeter |
| SE1351147-2 | 2013-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015047159A1 true WO2015047159A1 (en) | 2015-04-02 |
Family
ID=52744096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/SE2014/050954 WO2015047159A1 (en) | 2013-09-30 | 2014-08-20 | Guiding mechanism for a sample holder in a sample isothermal calorimeter |
Country Status (2)
| Country | Link |
|---|---|
| SE (1) | SE538154C2 (en) |
| WO (1) | WO2015047159A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546358A (en) * | 2015-09-23 | 2017-03-29 | 深圳市易流科技股份有限公司 | A kind of temperature-sensing probe and vehicle electronics |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007139498A1 (en) * | 2006-05-30 | 2007-12-06 | Symcel Ab | A device, method and vessel assembly for the measurement of heat flow at least one sample |
-
2013
- 2013-09-30 SE SE1351147A patent/SE538154C2/en unknown
-
2014
- 2014-08-20 WO PCT/SE2014/050954 patent/WO2015047159A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007139498A1 (en) * | 2006-05-30 | 2007-12-06 | Symcel Ab | A device, method and vessel assembly for the measurement of heat flow at least one sample |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546358A (en) * | 2015-09-23 | 2017-03-29 | 深圳市易流科技股份有限公司 | A kind of temperature-sensing probe and vehicle electronics |
| CN106546358B (en) * | 2015-09-23 | 2019-05-24 | 深圳市易流科技股份有限公司 | A kind of temperature-sensing probe and vehicle electronics |
Also Published As
| Publication number | Publication date |
|---|---|
| SE538154C2 (en) | 2016-03-22 |
| SE1351147A1 (en) | 2015-03-31 |
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