Abstract: The present invention is to provide a thermo-valve which can be operated with no unnecessary work to fill fluid easily and without fail into a circuit having the fluid flow therethrough at the time of a high temperature range.

Abstract: A pair of coolant receiving pipes (23) and (24) for respectively receiving a coolant from left and right engine heads of a V-engine are provided on a first body (21) side, and a collecting passage (27) for collecting the coolant, communication opening (30a) towards a radiator via the above-mentioned collecting passage (27) and communication opening (31a) towards a branch passage provided with a heater core part or the like are provided on a second body (22) side and these are individually resin molded. A coolant passage apparatus (10) is formed by joining the above-mentioned first body (21) and second body (22) for example by welding means.

Abstract: To provide a temperature-sensitive indicator which, when using the temperature-sensitive indicator having a capsule packed with a heat-sensitive material, enables easy rupture of the capsule, without being affected by the temperature of a finger of a user. The indicator includes: a base; a concave portion formed in the base; a capsule accommodated in the concave portion and packed with a heat-sensitive material; an absorbing member placed on the capsule; pressing means which is arranged above the absorbing member, and which is formed of a transparent heat insulating material; and a cover which covers at least the capsule and the absorbing member. By pressing on the capsule using the pressing means 6, the capsule is ruptured.

Abstract: A coolant passage apparatus 10 is formed by joining a plurality of resin moldings 31 and 32 which are each individually molded. A pair of coolant receiving pipes 11 and 12 for respectively receiving a coolant from a pair of engine heads and riser pipes 17 and 18 adjoining the coolant receiving pipes are provided, a central passage 19 is formed between the riser pipes, and a communicating tube 21 which is towards a radiator is formed to communicate with the central passage. Assuming that a line passing through the center of the central passage 19 is (indicated by) A and lines passing through the centers of the above-mentioned riser pipes are (indicated by) B respectively, each of the lines B is outwardly and obtusely angled with respect to the line A, and the riser pipes are respectively molded on both sides of the central passage to incline outwardly.

Abstract: A cooling apparatus for an internal combustion engine is provided in which a temperature detecting tip of a temperature sensor is arranged in a position where flow of a coolant is smooth, to thereby improve a measurement accuracy of coolant temperature. A thermoelement assembly 13 and the temperature sensor 17 which detects the temperature of the coolant are accommodated in the housing 11 arranged at a return channel of the coolant which flows from a radiator to a coolant inflow part of the engine. The temperature detecting tip 17a of the temperature sensor 17 is arranged to face the inside of a circulation hole 12 of the housing 11 between a valve body 23 which constitutes the thermoelement assembly and a frame support part formed in the circulation hole 12 of the housing 11.

Abstract: To provide a temperature sensitive indicator that is capable of easily control the temperature of the temperature sensitive indicator itself and is not affected by the temperature of a finger when the temperature sensitive indicator is operated. In the temperature sensitive indicator that has: a base body; a capsule placed on the base body and filled with a heat-sensitive material; an absorbent member placed on an upper part of the capsule; a cover covering at least the capsule and the absorbent member; and capsule breaking means formed therein with a space through which the base body and the cover are inserted, the base body and the cover are pulled out through the space of the capsule breaking means, whereby the capsule is broken by the capsule breaking means.

Abstract: To obtain a thermostat device in which a thermo element assembly can be extremely easily and properly assembled and fixed to a device housing. The thermostat device has a thermo element assembly (10) configured by a piston (3), a thermal expansion unit that changes its volume with a change in temperature, to reciprocate a cylinder container (4) with respect to the piston, and a heating element (H) that is provided in a casing of the piston and heats the thermal expansion unit (W) when supplied with current. An assembling hole (11) is provided in the device housing in order to hold an outer end of the thermo element assembly by causing the outer end to pass therethrough toward the outside of the device. Moreover, a piston guide (13) is provided at a section on the upper end side of the piston configuring the thermo element assembly.

Abstract: [Problem] To improve durability of a hot and cold water mixing valve. [Means to Solve the Problem] The hot and cold water mixing valve having a cylindrical casing 1 is provided with a control valve member 2 which adjusts an opening/closing ratio between a hot water inlet a and a cold water inlet b, by balancing between loads applied by a biasing member 4 and an actuator 5, and cylindrical temperature adjusting means 8 and 9 which adjusts a position of the control valve member 2 when subjected to rotation by a user. In the temperature adjusting means 8 and 9, an upper surface 81 is formed at one end, a knob 82 is provided in the center of the upper surface 81, and a ring-shaped recess 83 is formed around the knob 82 at the upper surface 81. The temperature adjusting means 8 and 9 are arranged inside the casing 1 such that the knob 83 is inserted, coaxially with the casing 1, into the hole 12 which opens at one end of the casing 1.

Abstract: A hot and cold water mixing valve including a temperature adjusting dial D, and a cylindrical casing 1 having formed therein a hot water inlet a and a cold water inlet b is provided with a control valve member 2 in which one end is subjected to a load from a biasing member 4 and the other end is subjected to a load from an actuator 5, and an opening/closing ratio between the hot water inlet a and the cold water inlet b is changed by balancing between the loads applied by the biasing member 4 and the actuator 5, to adjust a mixture ratio between the hot water which flows in through the hot water inlet a and the cold water which flows in through the cold water inlet b, and a temperature adjusting means (8, 900) whose one side is fixed to the temperature adjusting dial D and whose other side adjusts a position of the control valve member 2 through the biasing member 4.

Abstract: A hot water-water mixing faucet holds a control valve body in a balanced position between a bias spring and a temperature-sensitive coil spring. An adjusting screw 6a supports the bias spring in an axial direction to change setting of the supporting position of the bias spring, and a rear end side of the bias spring is supported by a supporting member which is formed separately from the adjusting screw. The supporting member is slidably inserted in the axial direction into a through-hole provided on the adjusting screw and is connected detachably to the adjusting screw by an abutting section provided in an area protruding from the through-hole toward the bias spring side. A lifting spring biases the supporting member to pull the supporting member back toward the side opposite to the bias spring to the adjusting screw 6a.

Abstract: A thermostat device includes a valve housing with a cooling water passage of an internal combustion engine, a built-in thermally expansive body thermally expanded or contracted by temperature change of cooling water, a piston rod slid by thermal expansion/contraction of the expansive body, and a valve body subjected to opening/closing operation by the piston rod in accordance with volume change of the expansive body. A valve seat shape on downstream side than the valve seat, which is an internal wall face forming the passage is formed in a shape that in valve open condition the cross-sectional area of the passage between an inlet seal of the valve seat and the top face of the valve body gradually decreases with reference to the maximum passage cross-sectional area on upstream side and that the cross-sectional area of the passage at the face perpendicular to the top face gradually increases.

Abstract: A thermoelectric conversion material is provided which stably exhibits high thermoelectric conversion performance at about 300 to 600° C. and has high physical strength, resistance to weathering, durability, stability, and reliability. A method for manufacturing the same, and a thermoelectric conversion element are also provided. Also provided is a thermoelectric conversion material produced using, as a raw material, silicon sludge which has had to be disposed of in landfill. The thermoelectric conversion material of the invention is characterized by containing, as a main component, a sintered body composed of polycrystalline magnesium silicide containing at least one element selected from As, Sb, P, Al, and B. The manufacturing method uses purified and refined silicon sludge.

Abstract: A device is provided to prevent the autorotation of the temperature adjustment handle in an automatic hot and cold water mixing valve. A member is prevented from moving in the circumferential direction of the body and is pressed in the radial direction by a spring against the periphery of an adjusting screw receiver, which forms the rotation shaft of the temperature adjustment handle incorporated in the body. Alternatively, the member is dressed against a connecting sleeve connected to the adjusting screw receiver and the temperature adjustment handle. The member is pressed with sufficient force to oppose autorotation in the temperature adjusting handle when the temperature is set.

Abstract: The object of the present invention is to obtain a thermostat device capable of improving the workability and assemblability, reducing costs, and downsizing the entire device with a minimum number of components. This thermostat device has a first valve disc 22 for opening and closing a first fluid passage 3b, and a second valve disc 23 for opening and closing a second fluid passage 3d, and constituted so as to open either the first fluid channel or second fluid channel and close the other by making the valve discs move integrally in conjunction with the operation of an operating member 21 in accordance with the temperature change of the fluid. The operating member has a case 31 which seals in one end side thereof a thermal expansion body 32 having a property of expanding and contracting in accordance with a temperature change, and retains a piston 33 from the opening of the other end side thereof in a freely reciprocable manner.

Abstract: According to the present invention, there is provided a thermoelement that suppresses the corrosion or corrosion products occurring on an outer peripheral surface of a piston and an inner wall of a guide portion so that the piston reciprocates surely and smoothly, and a thermostat apparatus using this thermoelement. The thermoelement according to the present invention includes a wax case that internally has a wax, which is an expanding body, a piston to which responsive action of the expansion and contraction of the wax is transmitted, and a guide portion that guides the sliding of the piston, wherein the guide portion is made of brass containing 69 mass % or more and 80 mass % or less of copper component, 2 mass % or more and 4 mass % or less of silicon component, 0.1 mass % or less of lead component, and the balance of zinc, and the piston is made of stainless steel.

Abstract: An electronically controlled thermostat control method is obtained which makes it possible to eliminate the response delay from the time that the required cooling water temperature is set to the time that the actual cooling water temperature reaches the set water temperature by controlling the flow rate, and to realize high cooling water temperature tracking characteristics with a high degree of precision at a low cost.

Abstract: A thermal element of a simple structure which can have a reduced cost because a minimum required number of structural components are used, excels in response and endurance and enables forward and backward movement of a piston with the prescribed stroke under the effect of volume changes following the expansion and contraction of a thermally expandable body. A thermal element 10 containing a thermally expandable body (wax 12) inside a case 11 comprises a piston 13 arranged inside the case along the axial line thereof. The inward end of the piston borders on the inside of the thermally expandable body and the outward end thereof protrudes outwardly from one end of the case, thereby enabling the piston to move forward and backward following the expansion and contraction of the thermally expandable body. The piston is slidably held with a guide member 14 disposed in a portion at one end inside the case.

Abstract: A thermostat independently controlling cooling water passages of two circuits, including a first valve body having first and second passages in constant communication. A third passage is selectively connected to those passages. Communication of the third passage is disconnected when the cooling water temperature is below a prescribed temperature, and the valve is opened when the cooling water temperature is equal to or higher than the prescribed temperature. A second valve body, having fourth and fifth passages selectively in communication, closes the valve to disconnect those passages when the cooling water temperature is below the prescribed temperature, and opens the valve by operating the first valve body to link the passages when the cooling water temperature is equal to or higher than the prescribed temperature. A tubular sleeve prevents first and second control chambers, respectively including the first and second valve bodies, from communicating with each other.

Abstract: A control method for an electronically controlled thermostat includes that an actuator is used for cooling-water control of an internal combustion engine and the actuator is capable of optionally varying the valve-opening ratio. An engine control unit computes a target temperature by means of various engine parameters and distributes the power distribution amount required to operate the actuator so that the cooling water temperature reaches the target temperature. The power distribution amount distributed to the actuator is determined by monitoring only the actual water temperature of the cooling water.

Abstract: To optimize the valve seat shape of the valve housing such that the resistance to passage of cooling water can be diminished in a housing type thermostat device. The valve seat shape further on the downstream side in the direction of flow of the cooling water than the valve seat 22 where an umbrella-shaped valve body 12 is seated, which is an internal wall face forming a cooling water passage 21 within the valve housing 20, is formed in a shape such that, in the valve open condition, the cross-sectional area of the passage that is formed between the inlet seal 32 of the valve seat and the top face 41 of the valve body gradually decreases on the cooling water inlet 31 side with reference to the maximum passage cross-sectional area on the upstream side in the flow direction of the cooling water, and such that the area of the passage at the face perpendicular to the top face gradually increases on the cooling water outlet 33 side so that cooling water flows along the top face of the valve body.