WO2004049351A1 - サーモエレメント - Google Patents
サーモエレメント Download PDFInfo
- Publication number
- WO2004049351A1 WO2004049351A1 PCT/JP2003/011328 JP0311328W WO2004049351A1 WO 2004049351 A1 WO2004049351 A1 WO 2004049351A1 JP 0311328 W JP0311328 W JP 0311328W WO 2004049351 A1 WO2004049351 A1 WO 2004049351A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- case
- piston
- thermal expansion
- guide member
- expansion body
- Prior art date
Links
- 230000008602 contraction Effects 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims description 32
- 238000007789 sealing Methods 0.000 claims description 32
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 description 24
- 239000012530 fluid Substances 0.000 description 18
- 239000000498 cooling water Substances 0.000 description 14
- 230000004043 responsiveness Effects 0.000 description 11
- 230000008859 change Effects 0.000 description 10
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 241001634822 Biston Species 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- FFGPTBGBLSHEPO-UHFFFAOYSA-N carbamazepine Chemical compound C1=CC2=CC=CC=C2N(C(=O)N)C2=CC=CC=C21 FFGPTBGBLSHEPO-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000011511 Diospyros Nutrition 0.000 description 1
- 244000055850 Diospyros virginiana Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K5/00—Measuring temperature based on the expansion or contraction of a material
- G01K5/32—Measuring temperature based on the expansion or contraction of a material the material being a fluid contained in a hollow body having parts which are deformable or displaceable
- G01K5/44—Measuring temperature based on the expansion or contraction of a material the material being a fluid contained in a hollow body having parts which are deformable or displaceable the body being a cylinder and piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/01—Control of temperature without auxiliary power
- G05D23/02—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature
- G05D23/021—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being a non-metallic solid, e.g. elastomer, paste
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N15/00—Thermoelectric devices without a junction of dissimilar materials; Thermomagnetic devices, e.g. using the Nernst-Ettingshausen effect
Definitions
- the present invention relates to a thermoelement used for a thermostat or the like that operates an on-off valve or the like for a fluid passage for cooling water or the like.
- the present invention relates to a thermoelement configured to include a moving member (piston) moved thereby.
- a thermostat is used as a control valve for adjusting the amount of cooling water circulated to a radiator so that the temperature of cooling water introduced into the engine can be controlled.
- the control valve is interposed in a part of a cooling water passage constituting a cooling device, and when the cooling water temperature is low, the control valve is closed so that the cooling water does not pass through a radiator and a bypass passage is provided.
- the cooling water temperature is controlled to a required state by opening the control valve and circulating the cooling water through the radiator when the temperature of the cooling water rises. .
- thermoelement using a thermal expansion body such as wax is generally used as a temperature sensor.
- thermoelements such as a sleeve type (for example, see Patent Document 1) and a diaphragm type (for example, see Patent Document 2) are known as this type of thermoelement.
- Patent Document 1 a sleeve type (for example, see Patent Document 1) and a diaphragm type (for example, see Patent Document 2) are known as this type of thermoelement.
- Patent Document 2
- Patent No. 3225386 pages 2-3, Figures 1 and 6)
- a rubber sleeve is housed in a metal container, and a sealing chamber formed between the container and the rubber sleeve is filled with wax as a thermal expansion body.
- a structure is provided in which a piston as a moving member is slidably inserted into the rubber sleeve via a compressible fluid.
- the piston moves in the reciprocating direction by projecting the piston by squeezing the piston with a rubber sleeve provided around the piston as the wax expands. I'm going to let you.
- the diaphragm-type thermoelement disclosed in Patent Document 2 wax as a thermal expansion body is sealed at one end side of the case, and a change in volume is transmitted to a piston as a moving member by the diaphragm and the fluid body. It has such a configuration.
- the diaphragm-type thermoelement when the wax expands, the diaphragm is displaced so as to swell to the side opposite to the wax, whereby the fluid is pushed, whereby the thermal expansion is converted into axial movement and the moving member is moved. Then, the piston moves so as to protrude outside the case.
- Patent Document 2 as a prior art, a rubber piston is used as a sealing material for preventing a fluid from leaking to the piston side, and the rubber piston is sealed while sliding.
- a structure is disclosed in which a backup plate made of a fluorine resin is provided between the rubber piston and the piston to prevent the rubber piston from sticking to the piston.
- Patent Document 2 the above-mentioned rubber piston is omitted, the inner end of the piston is exposed in the fluid, and an annular sealing member is provided between the piston and the case to provide a fluid seal.
- a structure for preventing leakage to the outside is disclosed.
- a fluid to be detected such as cooling water enters the inside of the container
- the piston does not return to the inside of the container, resulting in a so-called lift-up state.
- lift-up state There was a problem.
- the valve remains open in the fluid passage, which may cause a problem such as a deterioration in the engine warm-up performance. there were.
- such a sleeve-type thermoelement has a structure in which the piston is protruded by squeezing the sleeve, which is problematic in terms of responsiveness, and also has a problem that the piston stroke cannot be increased.
- the piston since the above-mentioned sleeve constantly operates by repeatedly contracting and expanding, if it is easily broken due to the progress of deterioration, or if it breaks, the piston will not be able to protrude, and it will be used for thermostats. In this case, the valve remains closed, which may cause overheating and the like, and it was necessary to take measures to prevent this.
- the piston and the guide member holding the piston are both made of metal, for example, when a lateral stress is applied to the piston or the guide member, the piston tilts. There was a problem that the sliding resistance was increased and the piston and the guide member were worn. Furthermore, if the substance contained in the cooling water undergoes a chemical change and accumulates as foreign matter on the sliding portion between the piston and the guide member, the piston may slow down or stop moving, which may require maintenance. Was.
- the rubber piston which is a seal member, is almost cylindrical and has a structure that seals while sliding integrally with the piston. There is a problem that the sealing performance is not sufficient on the surface. Furthermore, since the diaphragm is used, there is a problem that the working stroke of the piston cannot be increased due to the limitation of the amplitude of the diaphragm.
- Patent Document 2 the piston is exposed in the fluid, and a gap is formed between the fluid and the guide member in order to prevent the fluid from flowing out of the case and infiltrating the cooling water into the case.
- the structure is provided with a diaphragm member, the number of components such as diaphragms and fluids There are still many requirements, and it has been difficult to reduce costs.
- Patent Document 2 the above-mentioned fluid is sealed between the piston and the guide member with a simple U-shaped nose knives.
- a packing prevents leakage of the fluid to the outside. There was a risk of causing problems.
- the present invention has been made in view of such circumstances, and eliminates the problems of the sleeve-type and diaphragm-type thermoelements described above, reduces the number of necessary components, and reduces costs. It is an object of the present invention to obtain a thermoelement that can obtain a reciprocating operation by a required stroke of a piston by a volume change accompanying expansion and contraction of a thermal expansion body, and is excellent in responsiveness and durability. Disclosure of the invention
- thermo-element according to the present invention (the invention according to claim 1) is characterized in that a heat-expanding body having the property of expanding with a rise in temperature and contracting with a fall in temperature is provided outside the case.
- the piston protrudes outward from one end of the case and moves forward and backward in accordance with expansion and contraction of the thermal expansion body, and a guide member disposed at one end of the case and holding the piston slidably.
- a seal member disposed at an inner end portion of the guide member in the case and enclosing the thermal expansion body at the other end side in the case, wherein the case is configured to fit the guide member.
- Open It is formed as a substantially bottomed cylindrical hollow container having a mouth and a bottomed portion having a spherical inner peripheral surface at an end opposite to the opening, and the guide member is formed on an axial line.
- the outer peripheral portion is formed of resin by imitating the inner peripheral shape of the case, and the seal member is interposed between the inner end of the guide member and the thermal expansion body inside the case. It is characterized by being provided.
- thermoelement according to the present invention is the thermoelement according to claim 1, wherein the case is connected coaxially with a large-diameter cylindrical portion having an opening for fitting the guide member. And a bottomed small-diameter cylindrical portion reduced in diameter from the large-diameter cylindrical portion, wherein a step portion is formed between the small-diameter cylindrical portion and the large-diameter cylindrical portion,
- the guide member has a cylindrical shape having a base portion and a seat portion coaxially connected to the base portion, and having a through hole on an axis.
- the base is formed in the shape of the inner circumference of the large-diameter cylindrical case, and is installed in the large-diameter cylindrical case in a state where the base is engaged with the stepped portion. Is formed to imitate the inner peripheral shape of the case small-diameter cylindrical portion, and the inner end thereof restricts the sealing member for sealing the thermal expansion body filled in the case small-diameter cylindrical portion from the side opposite to the thermal expansion body. It is configured to be held in a state.
- thermoelement according to the present invention is the thermoelement according to claim 1, wherein the case is a bottomed hollow cylindrical container having substantially the same diameter.
- the bottom portion side is filled with a thermal expansion body, and a guide member whose inner end faces the thermal expansion body via a sealing member is configured to be fitted through the case opening.
- a locking cylinder member fitted and fixed to a portion near the opening of the case, and is internally provided.
- thermo-element according to the present invention is the thermo-element according to claim 1, 2, or 3, wherein the thermal expansion body is made of copper powder mixed with wax and a thermoplastic elastomer. It is characterized by being gelled by mixing.
- thermoelement according to the present invention is the thermoelement according to any one of claims 1 to 4, wherein the outer diameter of the piston is equal to or slightly smaller than the through hole of the guide member, and the seal is It is formed to have a diameter larger than the inner diameter of the lip portion of the member, penetrates through the through holes of the guide member and the seal member, the inner end faces the thermal expansion body filled in the bottomed portion of the case, and the outer end has
- the guide member is disposed so as to protrude therefrom, and is configured to move forward and backward as the thermal expansion body expands and contracts.
- thermoelement according to the present invention is the thermoelement according to any one of claims 1 to 5, wherein the seal member is formed as an annular member having a substantially U-shaped cross section, The shaft hole is formed to have a smaller diameter than the shaft diameter of the piston, one end of which is in contact with the inner end of the guide member, and a U-shaped ⁇ portion at the other end faces the thermal expansion body.
- the seal member is formed as an annular member having a substantially U-shaped cross section
- the shaft hole is formed to have a smaller diameter than the shaft diameter of the piston, one end of which is in contact with the inner end of the guide member, and a U-shaped ⁇ portion at the other end faces the thermal expansion body.
- a fixed-side lip portion formed on the outer peripheral side of the concave portion and a second fixed-side lip portion formed at a predetermined interval in the axial direction are provided in the outer peripheral portion of the seal member.
- These fixed-side lip portions are formed so as to have the same outer diameter, and the second fixed-side lip portion is formed to have a straight shape having a predetermined length in the axial direction.
- the concave portion is provided on an inner peripheral portion of the seal member. Sliding side lip formed on the inner circumferential side of the And a second sliding-side lip formed at a predetermined interval in the axial direction of the heat-expanding body.
- the fixed-side lip portion and the sliding-side lip portion formed on both sides in the radial direction of the concave portion due to the pressure generated by the thermal expansion of the recess expand toward the inner peripheral surface side of the case and the outer peripheral surface side of the piston. Characterized in that it is formed so as to increase the sealing force.
- the piston since the inner end of the piston directly faces the wax as the thermal expansion body in the case, when the wax is warmed due to, for example, a rise in temperature, the wax melts out and a volume change occurs. By this volume change, that is, expansion, the piston is pushed out in a direction protruding from the case and the guide member.
- the inner peripheral surface of the bottomed portion of the case has a spherical shape, stress concentration due to expansion of the thermal expansion body into the case is avoided, and pressure due to expansion of the thermal expansion body is applied to the inner side of the piston. Can be added evenly to the edges.
- the stroke can be made longer than that of a thermoelement having a conventional structure using a diaphragm and a rubber sleeve.
- the piston is directly operated without using the rubber member such as the conventional diaphragm and rubber sleeve described above, it is excellent in responsiveness, and furthermore, the parts that are easily deteriorated by rubber etc.
- the piston and the guide member for slidably holding the piston are not present in the sliding holding portion of the member for moving the piston back and forth (thermal expansion body), the durability is high. Also excellent in terms of.
- a gelled material is used by mixing a thermoplastic elastomer and mixing by applying heat when mixing wax and copper powder.
- This type of wax is usually made by kneading a metal powder such as copper powder to improve the responsiveness of the wax. Are separated. If the copper powder enters between the guide and the piston, it may damage the sliding surface and cause the intrusion of cooling water from the outside or the outflow of wax or the like sealed inside. It is effective in solving the problem.
- FIG. 1 is a schematic sectional view showing a first embodiment of a thermoelement according to the present invention.
- FIG. 2 is an enlarged view of a main part for describing a seal member used for a thermoelement according to the present invention.
- FIG. 3 is a diagram for explaining details of the seal member shown in FIG.
- FIG. 4 is a schematic sectional view showing a second embodiment of the thermoelement according to the present invention.
- FIG. 5 is a schematic sectional view showing a third embodiment of the thermoelement according to the present invention.
- thermoelement 1 to 3 show a first embodiment of a thermoelement according to the present invention.
- thermoelement denoted by reference numeral 10 will be described with reference to FIG. That is, reference numeral 11 denotes a metal case that constitutes the thermoelement body.
- a case 12 is sealed as a thermal expansion body that thermally expands and contracts under the influence of heat from the outside of the case 11.
- the case 11 may be made of any material that can appropriately transfer heat from the outside by press working or the like.
- Reference numeral 13 denotes a piston arranged along the axial direction in the case 11, and the piston 13 has an inner end facing the wax 12 and an outer end facing outward from one end of the case 11.
- a biasing force such as a return spring provided outside.
- Reference numeral 14 denotes a resin guide member that slidably holds the piston 13 and is disposed at one end of the case 11.
- Reference numeral 15 denotes a seal member which is disposed at the inner end of the guide member 14 in the case 11 and seals the wax 12 at the other end of the case 11.
- Reference numeral 16 denotes a backup plate formed of fluorine resin or the like provided between the seal member 15 and the inner end of the guide member 14.
- the backup plate 16 is provided as needed, and can be omitted. Needless to say, the backup plate 16 is used to support the piston 13 even at the inner hole thereof, so that the length of the sliding support portion of the piston 13 can be ensured. This can contribute to downsizing in the axial direction.
- the case 11 is a hollow container composed of a large-diameter cylindrical portion 11A and a small-diameter cylindrical portion 11B, and the large-diameter cylindrical portion 11A and the small-diameter cylindrical portion 11B are coaxial.
- One end of the large-diameter tubular portion 11A is formed as an opening 11C.
- the small-diameter cylindrical portion 11 B has a hollow structure with a bottom that is reduced in diameter from the large-diameter cylindrical portion 11 A, and the large-diameter cylindrical portion “MA” has an opening 1 for fitting the guide member 14. It has a hollow structure having 1 C, and a stepped portion for regulating the movement of the guide member 14 toward the wax 12 side is provided between the small-diameter cylindrical portion 11 B and the large-diameter cylindrical portion 11 A. 1 1 D is formed.
- reference numeral 11E denotes a caulking portion for locking the guide member 14 in a state of being fitted into the large-diameter cylindrical portion 11A.
- the inner surface of the bottomed portion of the small-diameter cylindrical portion 11B is formed in a spherical shape so that the pressure of the heat-expanding box 12 can be uniformly applied to the inner end of the piston 13.
- the guide member 14 is formed into a cylindrical shape having a base portion 14A and a seat portion 14B and a force and a through hole 14C on an axis, and is made of, for example, polytetrafluoroethylene which is a fluorine resin material. Is molded.
- the base portion 14A is formed by imitating the inner peripheral shape of the case large-diameter cylindrical portion 11A, and the step portion 11D between the case small-diameter cylindrical portion 11B and the large-diameter cylindrical portion 11A is formed. It is installed in a state where it is locked.
- the seat portion 14B is formed by imitating the inner peripheral shape of the case small-diameter cylindrical portion 11B, and the inner end thereof seals the wax 12 filled in the case small-diameter cylindrical portion 11B.
- the sealing member 15 is held in a state where it is regulated from the non-wax side.
- the wax 12 as the above-described thermal expansion body has a property of expanding with a rise in temperature and contracting with a decrease in temperature due to thermal influence from the outside of the case 11.
- the outer diameter of the piston 13 is equal to or slightly smaller than the through hole 14C of the guide member 14, and is larger than the inner diameters a and b of the lip portions 15a and 15b of the seal member 15. It has been.
- the piston 13 passes through the through holes 14C and 15A of the guide member 14 and the seal member 15 and has an inner end facing the wax 12 sealed in the small-diameter cylindrical portion 11B of the case.
- the outer end is arranged so as to project from the guide member 14 toward the outside of the case 11.
- the piston 13 moves forward and backward along the left and right directions in FIG. 1 as the wax 12 expands and contracts.
- the sealing member 15 is formed of a material having a sealing function such as rubber, synthetic resin, or the like so as to have a substantially annular shape having the above-described penetrating item 15A, and is fitted to the outer peripheral portion of the piston 13. It is arranged on the cylindrical portion of the case 11 in a state where it is in a closed state. As shown in FIGS.
- one end of the seal member 15 is in contact with the inner end of the guide member 14 (the contact is made via a backup plate 16;
- the description of the backup plate 16 is omitted
- the through hole 15A is formed to have a smaller diameter than the shaft diameter of the piston 13; Further, the pressure is generated toward the case 11 and the piston 13 by the pressure generated by the thermal expansion of the wax 12, so that the sealing force of the piston 13 is increased.
- the seal member 15 is a member having an annular shape having a substantially U-shaped cross section, and the U-shaped concave portion 15e is disposed so as to face the wax 12 side.
- the sealing member 15 is formed so that the outer diameters c of the fixed side lip portions 15c and 15d formed on the outer peripheral portion are equal to each other, and the guide portion of the fixed side lip portion is formed.
- the second fixed-side lip portion 15d on the member 14 side has a straight shape having a predetermined length in the axial direction.
- the straight lip portion 15d acts due to the thermal expansion of the wax 12 due to the movement of the piston 13. This is a part for preventing the falling phenomenon, etc. This is because the expansion of the wax 12 is not uniform, so that the seal member is inclined with the conventional shape and the piston is also inclined as a result, and the guide member is also inclined. This is to prevent a problem such as galling from occurring.
- the guide member 14 is engaged with the step portion 11D of the case 11 as described above, and the positioning of the seal member 15 is performed. Therefore, there is also an advantage that the amount of the wax 12 can be adjusted to an appropriate amount.
- the seal member 15 has sliding-side lip portions 15a and 15b at at least two locations on the inner peripheral portion.
- the two sliding-side lip portions 15a and 15b have inner diameters a and a. b is formed so as to be different from that of the piston 13 so that the piston 13 can be properly sealed in a required state.
- these sliding-side lip portions 15a and 15b are in contact with the outer peripheral portion of the piston 13 in a piercing contact state to seal the respective portions, and have a two-stage configuration having different inner diameters. Therefore, the sliding resistance between the piston 13 and the piston 13 is small, and the sealing function for obtaining the effect of preventing wax leakage is ensured.
- the sliding side lip portions 15a and 15b are formed by the inner diameter a of the sliding side lip portion 15a on the wax 12 side due to the concave portion 15e and the second sliding side lip portion on the guide member 14 side. It is set to be larger than the inner diameter b of 15b.
- Such a sealing member 15 is indicated by an arrow in FIG. 3 when a concave portion 15e formed in a portion facing the wax 12 side receives a pressure accompanying a volume change due to thermal expansion of the wax 12. Show Thus, a displacement extending to the outer periphery is applied to the sliding side lip portion 15a and the fixed side lip portion 15c, whereby the sealing function can be increased.
- the wax 12 is heated by, for example, a rise in temperature. Then, the wax 12 melts and a volume change occurs, and the volume change, that is, expansion, pushes the piston 13 in a direction protruding from the case 11 and the guide member 14. At this time, the pressure of the wax 12 causes the seal member 14 to apply pressure to the concave portion 15e between the inner and outer lips 15a and 15c, so that the lips 15a and 15c spread inward and outward. Thus, the sealing force between the outer peripheral portion of the button 13 and the inner peripheral portion of the case 11 is increased.
- the sliding lip 15b and the sliding lip 15a having a larger diameter than the sliding lip 15b on the inner peripheral side of the seal member 15, It is possible to reduce the number of sliding stakes, and therefore, the responsiveness of the piston 13 to the movement is good.
- the piston 13 is directly operated without using a rubber member such as the above-mentioned conventional diaphragm or rubber sleeve, the responsiveness is excellent, and the deterioration of the rubber and the like is also excellent.
- Durable because there is no easy-to-use part in the piston 13 and the guide member 14 that slidably holds the piston 13 ⁇ ⁇
- the sliding holding part by the member (wax 12) for reciprocating the piston 13 Excellent in terms of sex.
- FIG. 4 shows a second embodiment which is a modification of the above-described first embodiment.
- a metal plate 17 is interposed on the outer end side of the base 14A of the guide member 14 to be fitted from the opening "11C" in the case large-diameter cylindrical portion "MA". 1 E It is more fixed. In this way, the guide member 14 can be securely fixed to the case 11 and the exposed portion of the guide member 14 which is a resin molded product can be reduced. Therefore, the function as a high pressure specification can be obtained.
- FIG. 5 shows a third embodiment of the thermoelement according to the present invention.
- thermoelement denoted by reference numeral 20 in the same figure has a metal case 11 consisting of a hollow cylindrical container with a bottom having almost the same diameter, and the bottom of the thermoelement is affected by heat from the outside.
- a wax 12 as a thermal expansion body which thermally expands and contracts is sealed.
- a piston 13 is arranged along the axial direction, and the inner end faces the wax 12, and the outer end projects outward from the opening of the case 11,
- the wax 12 is configured to move forward and backward on the axis as the wax 12 expands and contracts.
- the retreating operation of the piston 13 into the case 11 is performed by an urging force of an externally provided return spring or the like as in the above-described embodiment.
- reference numeral 14 denotes a guide member formed of preferably a resin material for slidably holding the piston 13, and is formed to have a substantially cylindrical shape in this embodiment, 11 is fitted therein from one end side (opening side), and serves to hold the biston 13 slidably.
- a seal member 15 for sealing the wax 12 into the bottomed portion of the case 11 is disposed.
- reference numeral 14c denotes a through hole for slidably holding the piston 13.
- the seal member 15 is directly in contact with the inner end of the guide member 14, but the backup member made of a fluororesin or the like in the meantime as in the above-described embodiment. It goes without saying that a plate may be incorporated.
- the same member as that described in the above-described embodiment is used as the seal member 15, and a specific description thereof will be omitted.
- the portion near the opening of the case 11 has a substantially inward cap shape as a locking cylinder member fitted and fixed facing the outer end of the guide member 14.
- a locking cylinder 21 and a guide cylinder 22 preferably made of a rubber material and provided integrally on the outer end side of the locking cylinder 21 are provided.
- the guide cylinder 22 is fitted around the opening of the case 11 together with the locking cylinder 21 by the holding plate 23, It is fixed to the case 11 to prevent intrusion of cooling water from the outside and to serve as a second guide member for slidably holding the biston 13.
- the locking cylinder 21 is fitted into the opening of the case 11 with the wax 12, the sealing member 15, and the guide member 14 sequentially incorporated in the case 11, and welded. For example, it is fixed to the case 11.
- the locking position of the locking cylinder 21 can be positioned and fixed in such a manner that the mounting position (internal position) of the guide member 14 in the case 11 can be adjusted.
- reference numeral 21a denotes a bottom for locking the guide member 14 in the locking cylinder 21, and an opening for holding the piston 13 in a freely fitted state so as to be slidable.
- Reference numeral 22a denotes a shaft hole that slidably supports the piston 13 in the guide cylinder 22.
- the inner end position of the guide member 14 that seals the wax 12 via the seal member 15 in a state where the wax 12 is sealed in the case 11 can be set arbitrarily. Make up. This eliminates the need for a step of adjusting the volume of the wax 12, which is a thermally expanded body, enclosed in the case 11, which is a post-processing that was conventionally performed during the assembly of the element. Since the adjustment can be performed by adjusting the fixing position of the locking cylinder 21, the workability is excellent.
- the piston lift amount when initially setting the temperature / lift amount, for example, the piston lift amount is set to 1 Omm at 80 ° C, for example.
- the amount of wax 12 to be filled it is necessary to perform a process of filling it a little less at the time of assembling and recessing a part of the case at the time of adjustment. What is necessary is just to assemble while adjusting the assembling position of.
- thermoelements With such a configuration, as in the above-described embodiment, the problems with the conventional sleeve-type or diaphragm-type thermoelements can be eliminated, the number of necessary components can be reduced, and the cost can be reduced. Due to the volume change accompanying expansion and contraction of the thermal expansion body, it is possible to obtain the advance / retreat operation by the required stroke of the biston, and it is possible to obtain a thermoelement which is excellent in terms of responsiveness and durability. . Further, in this embodiment, the shape and structure of the case 11, the guide member 14, and the like are further simplified, and there is an advantage that workability, assemblability, and cost reduction can be more effectively achieved.
- the present invention is not limited to the structure described in the above embodiment, and it goes without saying that the shape, structure, and the like of each part can be appropriately modified or changed.
- the shape and structure of case 1 1 It is needless to say that the guide member 14 and the sealing member 15 can be incorporated into the case 11 as appropriate.
- the shape of the sealing member 15 is not limited to the shapes shown in FIGS. 2 and 3, and may be any shape and structure that can achieve the same function. Industrial potential
- thermoelement As described above, according to the thermoelement according to the present invention, it is possible to eliminate the problems of the conventional structure of the sleeve-type or diaphragm-type thermoelement, reduce the number of necessary components, and reduce the cost. Moreover, due to the volume change caused by expansion and contraction of the thermal expansion body, it is possible to obtain the reciprocating operation by the required stroke of the piston, and it is possible to obtain a thermoelement which is excellent in responsiveness and durability. Play.
- the moving stroke can be increased as compared with a conventional thermoelement using a diaphragm or a rubber sleeve. Function can be improved.
- the responsiveness is excellent. Also, since there are no easily deteriorated parts such as rubber, there is also excellent durability.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Temperature-Responsive Valves (AREA)
- Details Of Measuring And Other Instruments (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03811871A EP1566811A4 (en) | 2002-11-27 | 2003-09-04 | thermocouple |
US10/499,645 US7175102B2 (en) | 2002-11-27 | 2003-09-04 | Thermoelement |
CN038048981A CN1639801B (zh) | 2002-11-27 | 2003-09-04 | 热电偶 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-343393 | 2002-11-27 | ||
JP2002343393A JP4293506B2 (ja) | 2002-11-27 | 2002-11-27 | サーモエレメント |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004049351A1 true WO2004049351A1 (ja) | 2004-06-10 |
Family
ID=32375916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/011328 WO2004049351A1 (ja) | 2002-11-27 | 2003-09-04 | サーモエレメント |
Country Status (7)
Country | Link |
---|---|
US (1) | US7175102B2 (ja) |
EP (1) | EP1566811A4 (ja) |
JP (1) | JP4293506B2 (ja) |
KR (1) | KR100961482B1 (ja) |
CN (1) | CN1639801B (ja) |
TW (1) | TWI264529B (ja) |
WO (1) | WO2004049351A1 (ja) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2883995A1 (fr) * | 2005-04-04 | 2006-10-06 | Vernet Sa | Element thermostatique, notamment pour thermostat de circuit de refroidissement, et procede de fabrication d'un tel element |
JP2006317013A (ja) * | 2005-04-12 | 2006-11-24 | Denso Corp | ヒートパイプおよびそれを用いた排熱回収装置 |
DE102006003258A1 (de) | 2006-01-19 | 2007-07-26 | Behr Thermot-Tronik Gmbh | Verfahren zum Herstellen eines thermostatischen Arbeitselementes und thermostatisches Arbeitselement |
JP2008025764A (ja) * | 2006-07-24 | 2008-02-07 | Nitta Ind Corp | 熱膨張ポリマーワックスアクチュエータ |
JP2008095918A (ja) * | 2006-10-16 | 2008-04-24 | Yamaha Marine Co Ltd | サーモエレメント及びこのサーモエレメントを用いたサーモスタット装置 |
JP4811350B2 (ja) * | 2007-05-30 | 2011-11-09 | トヨタ自動車株式会社 | 可動ガードレールシステム |
SE532354C2 (sv) * | 2007-09-11 | 2009-12-22 | Scania Cv Abp | Kylsystem och termostatanordning för motorfordon |
CA2727578C (en) * | 2008-07-10 | 2016-02-09 | Nippon Thermostat Co., Ltd. | Thermostat device |
BE1018373A3 (fr) * | 2008-10-17 | 2010-09-07 | Fn Herstal Sa | Arme a feu. |
JP5288614B2 (ja) | 2009-04-24 | 2013-09-11 | 日本サーモスタット株式会社 | サーモスタット装置 |
JP5134701B2 (ja) * | 2010-07-20 | 2013-01-30 | 日本特殊陶業株式会社 | 温度センサ |
US8763601B2 (en) | 2011-12-29 | 2014-07-01 | Sulas Industries, Inc. | Solar tracker for solar energy devices |
US8794254B2 (en) * | 2012-01-05 | 2014-08-05 | GM Global Technology Operations LLC | Passive closing device for thermal self-protection of high pressure gas vessels |
FR2991008B1 (fr) * | 2012-05-23 | 2015-07-17 | Vernet | Element thermostatique |
KR101875625B1 (ko) * | 2012-10-08 | 2018-07-06 | 현대자동차 주식회사 | 써모스탯 |
WO2015063922A1 (ja) * | 2013-10-31 | 2015-05-07 | Smc株式会社 | サーモエレメント及びサーモエレメントを組み込むサーモバルブ |
WO2015186872A1 (ko) * | 2014-06-02 | 2015-12-10 | 우진공업주식회사 | 전자식 서모스탯용 히터 및 그 제조 방법 |
CN104111125B (zh) * | 2014-08-05 | 2017-04-12 | 苏州路之遥科技股份有限公司 | 一种温度传感器及温度调节器 |
KR101694009B1 (ko) | 2015-06-16 | 2017-01-09 | 현대자동차주식회사 | 다단 바이패스 밸브 |
CN106225940A (zh) * | 2016-08-24 | 2016-12-14 | 常州市武进南夏墅苏南锻造有限公司 | 温度感应装置 |
US10337505B2 (en) * | 2016-12-16 | 2019-07-02 | Rostra Vernatherm, Llc | Thermal actuator |
WO2019040029A2 (en) * | 2017-05-29 | 2019-02-28 | Kirpart Otomotiv Parcalari Sanayi Ve Ticaret A.S | ACTUATOR WITH DIAPHRAGM WITH INCREASED PRESSURE RESISTANCE |
CN111255556B (zh) * | 2018-12-03 | 2021-12-28 | 沃尔沃汽车公司 | 用于控制冷却液流动路径的节温器 |
CN112113676A (zh) * | 2019-06-21 | 2020-12-22 | 台州旭升卫浴有限公司 | 一种热敏传感器用探头 |
CN112664307A (zh) * | 2019-10-16 | 2021-04-16 | 比亚迪股份有限公司 | 节温器及具有其的车辆的冷却循环系统 |
CN111928123B (zh) * | 2020-07-22 | 2022-03-18 | 东营市乾润石油工程技术服务有限责任公司 | 一种可伸缩标志牌 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5555729U (ja) * | 1978-10-12 | 1980-04-15 | ||
JPH0798390A (ja) * | 1993-09-28 | 1995-04-11 | Nippon Thermostat Kk | サーモエレメントおよびサーモスタット |
JPH1068476A (ja) * | 1996-08-28 | 1998-03-10 | Misawa Homes Co Ltd | 配管スリーブ |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB738468A (en) * | 1952-11-07 | 1955-10-12 | Gen Motors Corp | Improvements in power elements for thermo-responsive devices |
GB870363A (en) * | 1959-02-20 | 1961-06-14 | Gen Motors Ltd | Improvements in or relating to thermo-responsive power devices |
US3719085A (en) * | 1970-11-23 | 1973-03-06 | Robertshaw Controls Co | Thermal power element |
JP2512313B2 (ja) * | 1987-11-24 | 1996-07-03 | 義一 久世 | サ―モ・アクチュエ―タ |
FR2687448B1 (fr) * | 1992-02-14 | 1994-05-20 | Felix Michel | Soupape thermostatique de securite pour circuit de refroidissement hydraulique. |
JPH1068473A (ja) | 1996-08-28 | 1998-03-10 | Nippon Thermostat Kk | サーモエレメントおよびサーモスタット |
US5971288A (en) * | 1997-04-22 | 1999-10-26 | Standard-Thomson Corporation | Expansion composition |
US5886066A (en) * | 1997-07-17 | 1999-03-23 | Hoechst Celanese Corporation | Thermoplastic polymer composition exhibiting improved wear |
JPH11166662A (ja) * | 1997-12-05 | 1999-06-22 | Nippon Thermostat Kk | 温度感知型の流量制御弁 |
DE19905605A1 (de) * | 1999-02-11 | 2000-08-17 | Bosch Gmbh Robert | Elektromagnetisches Proportionalventil |
-
2002
- 2002-11-27 JP JP2002343393A patent/JP4293506B2/ja not_active Expired - Fee Related
-
2003
- 2003-09-04 US US10/499,645 patent/US7175102B2/en not_active Expired - Lifetime
- 2003-09-04 WO PCT/JP2003/011328 patent/WO2004049351A1/ja active Application Filing
- 2003-09-04 CN CN038048981A patent/CN1639801B/zh not_active Expired - Fee Related
- 2003-09-04 EP EP03811871A patent/EP1566811A4/en not_active Withdrawn
- 2003-09-04 KR KR1020047006574A patent/KR100961482B1/ko active IP Right Grant
- 2003-09-08 TW TW092124716A patent/TWI264529B/zh not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5555729U (ja) * | 1978-10-12 | 1980-04-15 | ||
JPH0798390A (ja) * | 1993-09-28 | 1995-04-11 | Nippon Thermostat Kk | サーモエレメントおよびサーモスタット |
JPH1068476A (ja) * | 1996-08-28 | 1998-03-10 | Misawa Homes Co Ltd | 配管スリーブ |
Non-Patent Citations (1)
Title |
---|
See also references of EP1566811A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN1639801A (zh) | 2005-07-13 |
JP2004177249A (ja) | 2004-06-24 |
CN1639801B (zh) | 2010-07-14 |
TW200408796A (en) | 2004-06-01 |
TWI264529B (en) | 2006-10-21 |
KR20050084746A (ko) | 2005-08-29 |
EP1566811A1 (en) | 2005-08-24 |
US20050061893A1 (en) | 2005-03-24 |
US7175102B2 (en) | 2007-02-13 |
JP4293506B2 (ja) | 2009-07-08 |
KR100961482B1 (ko) | 2010-06-08 |
EP1566811A4 (en) | 2009-05-06 |
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