TW482858B - Case structure for a thermostat - Google Patents

Abstract

By imbedding the thermostat to the to-be-installed components of the engine head and the like, allows efficient layout of the coolant passage possible, and to allow easy installation job. Furthermore, the efficient thermostat case allows easy installation of the liquid temperature sensor and the release valve. The case structure for a thermostat comprises: a cylindrical case 1 formed with an entrance opening and an exit opening around its periphery; a fluid passage territory connecting the entrance opening and the exit opening inside the aforementioned case according to the temperature variation of the coolant which flows to advance and retreat the passage territory, by the advance and retreat motions, a valve element 2 is cut off; a penetration hole 1d is formed at the case 1 in the case structure of the thermostat which is embedded in a fit hole of the to-be-installed component where the coolant passage was formed.

Description

482858 V. Description of the invention (1) Technical field of the invention The present invention relates to the housing structure of a thermostat that is arranged in an internal combustion engine and controls the flow of the coolant by shutting off and communicating the coolant flow path. The shell structure of the thermostat constituting the shell of the thermostat is effectively utilized. Know-how is the medium in addition to the engine. The external body rear device, the self-heating thermostat and the anti-reliance device and the constant liquid flow path of the constant water flow of 10 are on the market. The water cooling is used for the four-wheel water-cooled configuration to dissipate heat. When the function comes or is formed, when the function stops the cold, according to Fig. 10 and the thermostat is installed. The thermostat is installed as shown in Fig. 10. The cooling system is used to cool the wheels of the engine. The cooling water pump is designed to keep the temperature right. It's hot and it's moderate. General cooling of constant temperature combustion engine Figure 11 shows the cooling system of the internal combustion engine of the vehicle with the radiator and the radiator. Most of the cooling engines are used for the water-cooled vehicle. It is also widely used for the cooling system of the internal combustion engine of the second vehicle. System, using rubber hoses, etc. to connect the liquid circulation circulator 'by the bow acting as a heat exchanger, the pressure forced by the engine to the radiator, the flow of the coolant to the radiator, and the circulation of the coolant The rubber hose on the road prevents the engine from overheating due to overheating, and the engine is always maintained in FIG. 11 to illustrate the structure of this water-cooled type. Fig. 10 is a schematic diagram showing the state of the thermostat in general, and an enlarged view of a mounting part. The thermostat 100 is configured in the engine

7059-4124-Pf.ptd Page 5 482858 V. Description of the invention (2) The predetermined position of the coolant flow path 11 0 formed between R. In addition, as shown in FIG. 丨, a piston 102 is used in the thermostat 100 to advance and retreat using the action of the element 101, and the thermostat 100 is arranged in the coolant flow path 1 and the piston 100 is retracted. The direction is parallel to the direction of the coolant flow path. In addition, the thermostat 100 uses the advancement and retreat of the piston 102 to make contact and separation between the body 103 and the valve seat 104 to cut off and communicate the coolant flow path.

In addition, the reference numeral 105 in FIG. 11 is a guide for guiding the advancement and retreat of the piston 102, the reference numeral 106 is a wax shell for storing wax, and the reference numeral 07 is for bypassing the passage noa.

The second valve body which is cut off and connected. In addition, the symbol p in the figure is a water pump, and the symbol R is a radiator. Here, the operation of the thermostat 100 will be described. As shown in FIG. 10 (a), the thermostat 丨 〇〇 closes the coolant flow path 11 〇 between the time when the engine starts and the time when the temperature in the engine E becomes an appropriate temperature. . σ means' because the coolant from the engine E does not go to the radiator r, it passes through the bypass passage 110A and then circulates to the engine E (refer to the arrow in Figure 10), and it reaches the proper temperature early and becomes within the engine E. After the temperature is adjusted, as shown in FIG. 10 (b), the valve body 103 of the thermostat 100 is opened, and the coolant flow path of the radiator R1 (1) is opened. As a result, the cold liquid passes through the radiator R and is cooled in the engine E: circulation (refer to the arrow in FIG. 10 (b)) to the engine E to maintain a proper temperature. Problem to be Solved by the Invention However, since the conventional thermostat is located inside the coolant flow path, in order to maintain the constant flow rate of the coolant, it is necessary to make the official diameter of the cold liquid flow path of the thermostat thicker. As a result, the diameter of the coolant flow path must be changed

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2. Description of the invention (3): Second, it cannot be arranged efficiently. x 'There is also a report on the location where the thermostat is located. 1.' In addition, the installation of the thermostat is also difficult. In order to solve this problem, a buried thermostat (Japanese Patent No. 1-7923) is proposed, which is buried in a fitting hole formed through a liquid flow path formed in the engine head. The cold part of Cheng 'is installed in the cooling system of the internal combustion engine of the conventional vehicle. It will drive the electric cooling fan if the coolant exceeds the predetermined temperature. The liquid temperature sensor and the thermostat are provided separately. Therefore, it is necessary to ensure that the installation of the liquid temperature sensor is required. The cooling system of the internal combustion engine of the so-called three-roller on-board vehicle is required when injecting coolant into the two heaters and the cooling water jacket. In order to exhaust gas, an exhaust valve has been installed for many months. The valve is also one or two of the liquid temperature sensor. To ensure the installation place, it is necessary to install it. In order to solve the above-mentioned problem, the present invention is to provide a cloth with a constant temperature as an external structure, which is designed to make the cooling fluid flow path highly efficient. Department 2: Shuo 4 quilted components' Thin Zhi Rong Meng Zuo Zi ^ ί It is also easy to perform women's work in constant temperature 1§. This is an effective way to install liquid temperature sensors, exhaust valves, etc. The structure of the shell of the thermostat, which can be used as a means to solve the problem, the cylindrical shell of the opening of the mouth, and the flow path area that communicates with the opening of the mouth. The present invention for solving the above problems includes: The peripheral surface forms an inlet opening and an outlet opening inside the housing.

482858 V. Description of the invention (4) The valve body that crosses the flow path area according to the temperature change of the coolant flowing in the flow path area, and uses the advance and retreat to cut off and communicate with the valve body, and is buried in A feature of the mounted member that forms a coolant flow path is that a through hole is formed in the casing. / 疋 Because the through hole is formed in the shell of the thermostat, you can install two or two sensors and exhaust valves on the thermostat, and you can install the thermostat in the cooling system. Valve, etc. In addition, since the thermostat is buried in the fitting hole of the mounted member that forms the coolant flow path, the thermostat can be easily installed and it can be arranged with high efficiency.邱;? F The U case includes the side wall of a cylindrical cover case protrudingly formed from the upper end surface of the case, and one of the connection parts forming an external part is connected to the through hole of the case and inserted into the electronic zero of the thermostat. Therefore, because of the liquid temperature sensor installed in the thermostat's liquid temperature, or the electronic hole such as the thermoelectric element of the gold heater, the thermostat is installed and wired in the installation. Electronic parts, such as the coolant Wires for forced heating of wax shells with pTC and nickel-chromium parts can be inserted through the through-hole assembly, and electronic parts can be simultaneously installed. The i Li through-hole setting includes an exhaust ball and is housed at both ends to form the exhaust pin. The exhaust valve is installed through the through hole of the casing. N 1 is inserted in the hunter's row, and the roaring pin is inserted in the 疋 '. Because the so-called exhaust valve is provided in the through hole of the casing,

482858 V. Description of the invention (5) Equipped with a thermostat and an exhaust valve can be installed at the same time. First Embodiment A first embodiment of the present invention will be described with reference to Figs. 1 to 6. In addition, FIG. 1 is a plan view of the embedded thermostat of Embodiment 1, FIG. 2 is a front view of the embedded thermostat shown in FIG. 1, and FIG. 3 is a side view of the embedded ten denier thermostat shown in FIG. It is a longitudinal sectional view of the embedded thermostat shown in FIG. 1. 5 and 6 are longitudinal sectional views showing a state where the buried thermostat is installed in the internal combustion engine, FIG. 5 shows a state where the flow path region is cut off, and FIG. 6 shows a state where the flow path region is communicated. The embedded thermostat A is composed of a casing 1, a thermo-acting valve stored in the casing 1, a thermoelectric element 10 forcibly operated by heating the thermo-acting valve 2, and an engine head which is a mounted component. B is formed by a cover 3 screwed to close the bottom surface of the casing 1 and a coil spring 4 inserted between the thermal valve 2 and the cover 3 and pressing the thermal valve 2 upward. The casing 1 has a hollow cylindrical shape, as shown in Figs. 5 and 6, and has an inlet opening portion & and an outlet opening portion 1b corresponding to the coolant flow path 3 formed in the engine head B. In addition, a connection wire 10a is formed at a position below the entrance opening of the peripheral surface (side wall) lc of the case 1 so as to connect to the peripheral surface (side wall) lc of the case 1 and to connect with the thermoelectric element. Hole ld. ^ Also, an exit opening f for the bypass passage is formed at an exit opening of the peripheral surface (side wall) lc of the casing 1, and an entrance opening le for the bypass passage is formed at a lower surface. The bypass opening 1e and the opening opening 1e and the exit opening 1f are structured as shown in Fig. 5. The entrance hall is not used in the following description.

7059-4124-Pf.ptd

482858 V. Description of the invention (6) The (valve body) 2a communicates when the inlet opening 1a and the outlet opening 1b are closed. Further, a recess lg on the inner wall of the lower end portion of the case 1 is fitted with a metal ring 5 supporting the coil spring 4. The upper part 1 h of the casing 1 is formed integrally with the casing 1 and the cover surface 1 c is a concentric circle and has a smaller diameter than the peripheral surface (side wall) 1 c. Further, a connecting portion 1 j connecting the upper surface of the casing 1 and the cover portion 1 i is provided on the upper portion 1 h of the casing 1. As shown in Fig. 2, the connecting portion 1j is provided at an intermediate position between the inlet opening portion 1a and the outlet opening portion 1b. That is, the inlet opening portion side 1 a and the outlet opening portion side 1 b are structurally separated. Furthermore, a linear groove 1 k is formed in the peripheral surface (side wall) 1 c of the casing 1, the ridge line portion 1 j 1 of the connecting portion 1 j, and the upper end surface 1 i 1 of the cover portion 1 i. k Rubber positioning 6 for fitting and positioning. In addition, a groove 1k is also formed in the bottom of the casing 1, so that the annular rubber member 6 does not protrude beyond necessary. Further, a positioning protrusion 11 is provided below the lower opening portion (a lower end) of the inlet opening portion 1a of the coolant flow path 3 of the casing 1. In addition, a recessed portion 7a is provided on the side wall of the fitting hole 7 provided in the engine head B corresponding to the protruding portion 11, and the protruding portion 11 and the recessed portion 7a are locked. The bottom surface of the case 1 is closed by a cover 3 that forms a bypass passage 3a through a sealing member 8. When the thermal valve 2 is described in detail, the thermal valve 2 includes a wax shell 2C containing a wax 2b as an expansion body, a diaphragm 2e that transmits the expansion and contraction of the wax 2b to the upper semi-fluid body 2d, and a membrane The reaction action of the sheet 2e is transmitted to the support plate 2h of the upper piston 2g, the piston 2g pressing the cover portion, and the laminated component (valve body) 2a built in these components. In addition, the element (valve body) 2 a slides freely along the inner wall surface 1 m of the housing 1 and opens and closes the entrance opening j a in structure.

7059-4124-Pf.ptd V. Description of the invention (7) and the outlet opening 1 b are at the bottom s of the thermo-acting valve 2 (wax shell 2c) * The thermoelectric element forcing the wax 2b to expand will be woven The shell 2c is heated for connection with the power supply. The electrical connection is shown in Figure 10, and several electrical connections are drawn to the outer core through the through hole ld. = Connect the two wires 10a as described above. The upper part of the guide part 2 of the guide part 2 of the shell 2 (the bottom 3 of 3) is formed on the inner wall surface ln of the piston part, and the corresponding shape is configured to be slidable with respect to the inner wall surface ln. The coil spring 4 is inserted into the gap between the second plant and the thermal valve 2 which always keeps the body of the thermal valve 2 upward. In addition, the coil spring = M is changed by t (see Figs. 4 and 5). The built-in thermostat i has the movable ear elasticity or the total height of the coil spring 4. In this case, it can also properly deal with conditions such as temperature, flow and other conditions. The head B is screwed on, and through the dense scroll and f $, although not shown in the figure, the cover 3 is fixed by the puller #, Gongda sealing member 8: the installation method of the thermostat eight will be explained. Baixian 'group thermostat A, the connecting wire 1 () of the warp piece 10 is perforated from the outer shell 1 to make the thermoelectric element into the upper fitting hole 9 and the lower fitting hole 7. It is in the engine head B shape 4 in advance Rear 'embedded in the upper part ^ ^. Outside 彀 1. At the time of this embedding, the thermostat A is inserted into the opening Q section 1 & and the exit opening Q. The direction should be aligned to the exhaust position Q 41b and cooling The fluid flow path 3 communicates (彖 昭 图 7〇59-4124-Pf.ptd page 11 V. Description of the invention --- via 6 4 and then 'in the state where the casing 1 and the aspiration holes 7, 9 are intended to be borrowed' The component 8 makes the cover 3 and the engine head B screw together and closes the bottom of the casing 1.

Vw leads to the hole Id of the thermoelectric element 10 through the casing 1 through pa ρ, κ〇 to the outside of the casing 1 through the through hole between the hole 7 and the casing 1 'Legal hole 7 leads. Then, it is drawn out to the outside through the through hole of the three cover body 3 formed in the sealing member 8 and connected to a power source. Yu = Install the thermostat carefully, and also install the thermoelectric element 10 at the same time. In addition, it is not necessary to ensure the space for installing the thermoelectric element 10, and it is not subject to the setting j: the dagger member 6 π The casing is in the state of being installed in the engine head B, because the rubber and the upper fitting hole g The fitting holes 7 are in close contact with each other, so that the cooling liquid does not leak along the gap between the outer A < week 1 c and the upper fitting holes 9 and 7. 、 Its-person 'explains the function of the thermostat A in this embodiment (refer to Figure 2, Germany, and $ I first' describes the role of the thermostat A from the closed state to the open state. The heating element (in the valve coolant flow path 3) The cooling liquid is low temperature. This temperature spreads through the outer surface of (next day) 2a and the wax shell 2c to the wax 2b in the wax shell 2c. Ascending day passes through the coolant in the coolant flow path 3 over time. The temperature increases the membrane 2e to expand the wax 2b in the device and the volume increases. With the increase of the volume, the piston = the rubber 2g ,, and tongue # 9 phase force acting through the upper semi-fluid 2d. This force Via the support plate 2h, the center of the piston / soil 2g protrudes from the guide 2cl. However, since the front end of the piston k

482858 V. Description of the invention (9) is always in contact with the fixed cover. In fact, the element (valve body) 2a resists the rebound force of the coil spring 4 and is pushed down due to the relative movement of the piston 2g. Then, when the thermal valve 2 slides downward, the inlet opening 1a and the outlet opening 1b of the casing 1 outside the use element (valve body) 2a becomes closed, and the flow path area f A communicates. As a result, the coolant flows from the radiator side to the engine side as shown by a blank arrow in FIG. 6. In addition, in order to make the forced self-closing state independent of the liquid temperature of the coolant into an open state, electric power is supplied from the connection wire 10a, and the wax case 2c is heated by a thermoelectric element. The inlet opening portion 1a of the case 1 and The outlet opening jb is opened, and the flow path area FA becomes connected. Next, the effect of the thermostat A from the open state to the closed state will be described. When the engine is stopped, the water pump is stopped and the circulation of the coolant in the coolant flow path 3 is stopped. The temperature of the cooling liquid decreases with time, and this temperature change is also transmitted to the wax 2 b through the element (valve body) 2 a and the wax shell 2 c. As the temperature decreases, the expanding wax 2b contracts, and the biasing force of the coil spring 4 that always biases the thermal valve 2 upwards slides the thermal valve 2 upwards. As a result, the outer peripheral surface of the element (valve body) 2a finally closes the inlet opening portion la and the outlet opening portion lb of the case 1 and closes the flow path area (see FIG. 5). Next, a second embodiment of the present invention will be described with reference to FIG. 7. In addition, Fig. 7 is a longitudinal sectional view showing a state where the buried thermostat is installed in the internal combustion engine, and shows a state where the flow path region is cut off. This embodiment is characterized in that a liquid temperature sensor is arranged at the inlet opening 丨 a

7059-4124-Pf.ptd Page 13 482858 V. Description of the invention (10)-11, the electric wire 11 a for connecting the liquid temperature sensor 11 is passed through the through hole 1 formed in the side wall lc of the housing 1 It is drawn out to the outside. Since the other structure is the same as that of the first embodiment, its explanation is omitted. The through hole 1 p is formed from the entrance opening 1 a to the bottom surface of the case 1 ', and an opening portion of the through hole 1 p is formed on the bottom surface. Therefore, although not shown in the drawing, the connection electric wire 11a drawn from the through hole 1a is drawn out from the sealing member 8 and the body 3. Therefore, by installing the buried thermostat provided with the liquid temperature sensor 11 in the internal combustion engine, the liquid temperature sensor 11 and the thermostat A can be installed at the same time. Also, it is not necessary to ensure a space for installing the liquid temperature sensor 1 丨, and there is no restriction on installation. Next, Embodiment 3 of the present invention will be described with reference to FIG. 8. Fig. 8 (a) is a side view of the thermostat shown in Embodiment 3 of the present invention, and Fig. 8 (b) is a front view of the thermostat shown in Embodiment 3 of the present invention. A feature of this embodiment is that a through-hole 1 q is formed in the connecting portion 1 j of the housing 1, and an exhaust valve 2 is provided in the through-hole 1 q. The exhaust valve 2 includes valve bodies 12a, 12b and exhaust pins 12c forming the valve bodies 12 & 2b at both ends. The exhaust pin 12c is inserted through the through hole 1q, and the exhaust valve 12 is mounted on the rubber member 6 above the cover 1) of the housing.

Page 14 In addition, since the other structure is the same as that of the first embodiment, its explanation is omitted. Therefore, 'in the state where the casing 1 and the engine head B are fitted, use the upper surface of the casing 1 c, the connecting portion 1 j, and the cover (covered on the peripheral surface of the casing, the connecting portion, 482858 5. Description of the invention (11) l2a, 12b (? ll exhaust valve 12) is opened and closed. The valve bodies 12a, 12b (? 12 exhaust valve 1 2) are formed when the cooling fluid is injected into the air, because it has The function is the same as that of the conventional exhaust valve, so detailed descriptions are omitted here. 'By installing the so-called exhaust valve 12 with a buried thermostat in the internal combustion engine, the exhaust valve 12 and the thermostat can be installed at the same time. Also, it is not necessary to ensure a space for installing the exhaust valve 2 and is not limited by installation. Next, Embodiment 4 of the present invention will be described with reference to Fig. 9. In addition, Fig. 9 shows that the thermostat is installed at A longitudinal sectional view of a state in the internal combustion engine shows a state in which a flow path region is cut off. In this embodiment, a feature is that a through hole 1 r is formed in a side wall (peripheral surface) 1 c of the casing 1, and a through hole 1 r is formed in the through hole 1 r. Since the exhaust valve 3 is the same as that of the first embodiment, the description thereof is omitted. The air valve 13 is composed of an exhaust ball 13a and an exhaust valve body 13b. The exhaust valve body 13b includes an accommodating portion i3e, which accommodates the exhaust ball 13a, and forms an outer opening 1 3c, which is closed by the exhaust ball 13a And the inner opening 13d. The exhaust valve body 3t) is fitted to the side wall (peripheral surface) lc of the casing 1 and the through hole 1r, and is fixed to the casing 1. Therefore, when the exhaust ball 13a is in a state where the outer opening portion 3c and the inner opening portion 1d are not closed, the interior of the receiving portion 3e and the casing} communicate with each other. This exhaust ball 13a also has the same function as the valve bodies 12a and i2b in the third embodiment (exhaust valve 12 on page 12), and forms an air drain channel when the cooling liquid is injected, and its description is omitted here. Instructions. ;;

Inside the internal combustion engine: ㊁f: The so-called exhaust valve 13 is provided with the thermostat A. It is not necessary to secure the so-called exhaust valve 13 and the thermostat A. limit. The space of the exhaust valve has not been installed. In addition, the thermostat described in the 4+, Apricot / ϊ flow path sorting machine return case example is applied to the coolant mouth roll wound, human ^ type丨 Dan thermostat 'but its configuration position is not limited to the engine head, but in the 7 IT fluid flow path, such as the engine block, the interior of the radiator, the branch of the bypass path and other positions can also be used. Effects of the Invention According to the housing structure of the thermostat according to the present invention, it is possible to efficiently arrange the coolant flow path by burying the mounted member ', and it is also easy to perform the installation of the thermostat. In addition, the effective use of the thermostat housing makes it easy to install a liquid temperature sensor, a vent valve, etc., and the thermostat is installed at the same time. Brief Description of Drawings Fig. 1 is a plan view of a buried thermostat of Embodiment 1. FIG. 2 is a front view of the embedded thermostat shown in FIG. 1. FIG. Fig. 3 is a side view of the buried thermostat shown in Fig. 1. Fig. 4 is a longitudinal sectional view of the buried thermostat shown in Fig. 1. Fig. 5 is a longitudinal sectional view showing a state in which an embedded type warmer is installed in an internal combustion engine, and a state diagram showing a state where a flow path region is cut off. Fig. 6 shows a state where an embedded thermostat is installed in an internal combustion engine.

7059-4124-Pf.ptd Page 16 482858 V. Description of the invention (13) A longitudinal sectional view showing a state diagram where the flow path area is connected. Fig. 7 is a longitudinal sectional view of the thermostat of the second embodiment. Fig. 8 is a diagram showing a thermostat of the third embodiment. Fig. 9 is a diagram showing a thermostat of the fourth embodiment. Fig. 10 is a schematic diagram showing a state where a conventional thermostat is installed in a coolant flow path of a general internal combustion engine. FIG. 11 is an enlarged view of a mounting portion of the thermostat of FIG. 10. DESCRIPTION OF SYMBOLS A Ten Density Is B Engine head 1 Housing 1 a Inlet opening lb Outlet opening Id Through hole 1 j Connecting portion lp Through hole lq Through hole lr Through hole 2 Thermal valve 2a Element (valve body) 3 Cover body 4 Coil spring 5 Ring 8 Sealing member 10 Thermoelectric element 10a Connection wire 12 Exhaust valve 12a, 12b Valve body 12c Exhaust pin 13 Exhaust valve 13a Exhaust ball 13b Exhaust valve body 13c Outer opening 13d Inner opening 13e Housing unit

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Claims (1)

482858 The structure of the shell of the ten-denier thermostat includes: the shell 'forms an inlet opening and an outlet opening on the peripheral surface; a domain' opens the inlet opening and the outlet in the housing 6. Application scope 1 · A cylindrical outflow The road section is connected; a valve body is used to cross the flow section, and its characteristics are buried outside the 2．Ru Shenzhong 'the cylindrical connection part of the shell and one of the Guan forms 3 External wires. 4 · If applied, use the external wire. And the forward and backward movement of the cooling liquid flowing in the flow path region, and the use of the advance and retreat to cut off the flow path region, and the fitting hole connected to the mounted member forming the cooling liquid flow path, is: Form a through hole. The shell structure of the thermostat of the patent scope item 1 includes: " a cover portion formed protruding from the upper end surface of the housing; and 'connecting the upper end surface of the housing and the cover portion, perforated on the side wall, cover portion, and connection of the cylindrical housing Department of complex perforation. "T, the shell structure of the thermostat of the first scope of the patent, the through hole of the shell is inserted through the electronic parts installed in the thermostat. Please refer to the shell structure of the thermostat of the second scope of the patent, and the through hole of the shell The connection of the electronic parts worn in the thermostat, and the shell structure of the thermostat of item 3 or 4 includes an exhaust ball and a housing for the row. 5 · As made in the scope of patent application No. 1 and 2, the through holes in the shell 482858 6. Scope of patent application The exhaust valve of the balloon receiving part of the balloon. 6. The shell structure of the thermostat according to claim 1, 2, 3, or 4, wherein the exhaust valve including the valve body and the exhaust pins forming the valve body at both ends are exhausted by the exhaust The pins are inserted through the through holes of the housing. 7059-4124-Pf.ptd Page 19