Tokyo, Japan
Tokyo, Japan

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Patent
Nippon Thermostat Co. | Date: 2015-04-01

A thermostat valve has a cylindrical valve housing formed as a single integrated unit out of synthetic resin material, having an annular body and a frame attached to one end of the annular body by a plurality of legs, a disk-shaped valve stem disposed in another end of the valve housing and movable along an axial direction, a spring seat that holds an opposite end of spring means away from the valve stem and locked and held in place by hooks at tips of locking arms extending from the valve housing, and a thermo-element fixedly mounted to an element guide provided in the frame of the valve housing that moves the valve stem in a valve opening direction in response to fluid temperature. An annular step having a top portion of predetermined width is formed adjacent to the rim of the opening in the one end of the valve housing.


Patent
Nippon Thermostat Co. | Date: 2017-05-03

[Problem] To provide a thermostat valve in which the amount of water leakage while the valve is closed is reduced to an infinitesimally small level and which is configured using a resin molding process to make the entire thermostat valve compact and lightweight and to reduce the number of parts. [Solution] A thermostat valve is provided with: a body housing (12) having an annular body section and a frame section which is provided to the other end surface side of the body section with legs therebetween, the body housing (12) being molded in one piece having a circular cylindrical shape from a synthetic resin material; a disk-shaped valve body (20) disposed on one end surface side of the body housing (12) so as to be capable of moving forward and backward in the axial direction; a spring receiver (24) for holding the end of a pressing spring means (22) away from the valve body and engaged with and held by the front end hook of an engagement arm (30) extended from the body housing; and a thermo-element (40) held by and affixed to an element guide (12c) provided on the frame section of the body housing, the thermo-element (40) operating the valve body in the valve opening direction according to fluid temperature. An annular stepped section having a top section with a predetermined width is provided at a portion of said end surface of the body housing, the portion being located close to an opening peripheral edge section, the annular stepped section serving as a valve seat section (16).


Patent
Nippon Thermostat Co. | Date: 2016-10-12

A thermoactuator (1) easily installed in an object (30) without compromising the operating characteristics of the thermo-element (9) has an element case (3), containing wax (2) that expands and contracts with changes in temperature; a supporting portion (5) attached at one end to the element case (3) by crimping, slidably supporting a shaft (6) at another end; a cylindrical casing (10) having an opening in one end, at least a portion of the supporting portion (5) pressed through the opening in the one end of the cylindrical casing (10); and a flange (10b) expanding outward from the one end of the cylindrical casing (10), in which through-holes (10c) are formed for mounting the thermoactuator (1) to an object (2) to which the thermoactuator (1) is to be attached. The element case (3) is supported by one end of the supporting portion (5) housed within the object (30) to which the thermoactuator (1) is to be attached and the casing (10) is mounted on the object via the flange (10b).


Patent
Nippon Thermostat Co. | Date: 2016-01-20

A thermoelectric conversion module has a substrate (11), a plurality of first electrodes (3), a plurality of thermoelectric conversion elements (2), a plurality of second electrodes (4), and connectors (42). The plurality of thermoelectric conversion elements (2) are n-type elements, connected in series. The connectors (42) are formed as a single unit with the second electrodes (4) and separate from the first electrodes (3). A receptor (33) that accepts the tip of the connector (42) is provided to each of the first electrodes (3). Six element rows (6) of five thermoelectric conversion elements (2) aligned along the X axis are arrayed along the Y axis. The receptors (33) are configured to accept connectors (42) of the same shape whether electrically connecting the thermoelectric conversion elements (2) within the element rows (6) or electrically connecting between element rows (6) that are adjacent to each other. The first electrodes (3) and second electrodes (4) are all the same shape.


Patent
Tokyo University of Science, Itoh Kikoh Co., Nippon Thermostat Co. and Swcc Showa Cable Systems Co. | Date: 2014-02-05

Provided is a heat storage device which can stably store heat by storing heat within a fixed temperature range. A heat storage device (10) of the present invention is characterized in being provided with a heat resistant frame (11), which is filled with one kind of alloy or mixed salt having a predetermined eutectic temperature, alternatively, a heat resistant frame (11), which is filled with two or more kinds of alloys or mixed salts having different eutectic temperatures, by having the alloys or the mixed salts adjacent to each other in the order of eutectic temperature levels with a partitioning wall (11a) therebetween. The heat storage device is also characterized in that the heat resistant frame (11) filled with the one kind of alloy or mixed salt having the predetermined eutectic temperature is set as a heat absorption-side heat storing section (12) and a heat dissipation-side heat storing section (13), alternatively, in the case where there are two or more kinds of alloys or mixed salts, the heat resistant frame (11) filled with an alloy (1) or a mixed salt (1) having a highest eutectic temperature is set as the heat absorption-side heat storing section (12), and that a heat resistant frame (11), which is filled with an alloy (2) or a mixed salt (2) having a lowest eutectic temperature is set as the heat dissipation-side heat storing section (13).


Patent
Nippon Thermostat Co. | Date: 2016-08-19

Provided is a fluid control valve assembly which reduces pressure loss as much as possible in a fluid passage line including a fluid control valve, thereby mini-minimizing the pressure for a fluid to pass therethrough and thus ensuring a required amount of flow without upsizing the overall assembly. The fluid control valve assembly is adapted such that an upstream pipe (17) forming an upstream fluid passageway and tilted at a predetermined angle relative to a valve axis (L) is provided to face an upstream chamber (11). The upstream chamber is formed upstream of a valve portion (12) which has a valve seat (13) and a valve body (14) in a valve housing (10) and which can open and close the fluid passageway. The wall surface of the upstream chamber is integrated with a swelling (20), which is projected in the chamber to thereby rectify and guide the fluid flowing therein through the upstream pipe so that the fluid smoothly flows to the valve portion.


Patent
Nippon Thermostat Co. | Date: 2016-08-10

A thermoelectric conversion module (1) that provides improved reliability while maintaining good induced voltage. The thermoelectric conversion module (1) includes a base (5); a plurality of first electrodes (3); a plurality of thermoelectric conversion elements (2) each electrically connected to one of the first electrodes (3) at one end thereof; and a plurality of second electrodes (4), each electrically connected to another end of the thermoelectric conversion elements (2); a plurality of parallel groups (17) connecting the thermoelectric conversion elements (2) in parallel; and the parallel groups (17) connected in series, or a plurality of series groups (17) connecting the thermoelectric conversion elements (2) in series, with the series groups (17) connecting in parallel.


Patent
Nippon Thermostat Co. | Date: 2015-12-09

[Problem] To provide a thermo valve for which the number of components is minimized, the structure is simplified and reduced in size, the weight is reduced, and having smooth operability and improved durability. [Solution] A valve chamber (12) is provided within a housing (1) and communicating with a first flow path (21) via an aperture (23). A second flow path (13) and a third flow path (14) are provided opening into this valve chamber. Furthermore, within this valve chamber are provided a thermo element (15), which is arranged so as to be capable of advancing and retreating in the axial direction and which operates in response to the fluid temperature, thereby opening or closing the connection between the second and third flow paths, and a coil spring (18), which biases this thermo element in the direction in which the flow path is closed. A valve body (24) is provided in the aperture connecting the first flow path and the third flow path (which communicates with the valve chamber). This valve body serves as a bypass valve (22) that opens and closes the aforementioned aperture, enabling the first and third flow paths to be connected when the aperture is open, and this valve body also serves as a spring means that biases the coil spring in the direction in which the flow path is closed.


Patent
Nippon Thermostat Co. | Date: 2016-07-13

[Problem] To enable to heat and atomize liquefied gas even at low temperatures by increasing a flow path (33) length and a transit time to be heated by a heater (12), and by spending time and efficiently heat the liquefied gas. [Solution] A device housing (14) having a hollow portion (18) including a gas intake pipe (16) projectingly provided to an outer periphery of an instrument body (4A) such that liquefied gas is taken in from an outer end, having the heater (12) built therein and attached to the instrument body (4A). In the hollow portion (18) of the device housing (14), a heating wall formed by a bulge extending from the outer end side to the inner end side in the axial direction of the intake pipe (16) and the heater (12) for heating are internally provided. Between the heating wall and the gas intake pipe (16), and between the heating wall and the inner wall of the housing (14), inner and outer gas flow paths (22, 24) are formed. To make these gas flow paths (22, 24) into return passages, the gas flow paths (22, 24) are communicated at the inner end side of the device housing (14), a liquefied gas introduction side opening (28) is provided at an outer end side of the outer gas flow path (24), and the outer end side of the inner gas (22) flow path is communicated with a gas intake opening (16a) of the tip of the gas intake pipe (16).


Patent
TOTO Ltd. and Nippon Thermostat Co. | Date: 2016-09-07

The present invention describes a hot and cold water mixing valve, comprising: a temperature adjusting dial (D) which is subjected to temperature control operation, and a main body member having a control valve mechanism (A) for adjusting temperatures of mixed water by operating said temperature adjusting dial (D) and a casing (1) in which a hot water inlet (a) and a cold water inlet (b) are formed and said control valve mechanism (A) is accommodated, and said main body member further comprising: a biasing member (4) made of a material having a fixed spring constant, a temperature sensitive spring (5) which expands or shrinks according to a temperature change, and a control valve member (2) in which a first spring bracket (72) for supporting said biasing member (4) is abutted against one end, and a second spring bracket (70) for supporting said temperature sensitive spring (5) is abutted against the other end, and an opening/closing ratio between said hot water inlet (a) and said cold water inlet (b) is changed by balancing between the loads applied by said biasing member (4) and said temperature sensitive spring (5), to adjust a mixture ratio between the hot water which flows in through said hot water inlet (a) and the cold water which flows in through said cold water inlet (b), characterized in that a mixing chamber (13) for mixing the cold water from said cold water inlet (a) and the hot water from said hot water inlet (b) is provided inside said casing (1), and a third spring bracket (71) for supporting said temperature sensitive spring (5) is formed in said mixing chamber (13),said temperature sensitive spring (5) is constituted by a coil-like large diameter coil spring (5a) wound to have a large diameter and a coil-like small diameter coil spring (5b) wound to have a small diameter, and said large diameter coil spring (5a) and said small diameter coil spring (5b) are arranged so that their axes are coaxial or in parallel, and supported between said second spring bracket (70) and third spring bracket (71), and a cylindrical cover (7) surrounding a perimeter side of said small diameter coil spring (5b) is formed integrally or substantially integrally with said second spring bracket (70) or the third spring bracket (71), the perimeter side of said small diameter coil spring(5b) is enclosed with the cover(7) on an inner circumference side of said large diameter coil spring (5a), and a response of expansion/shrink operation according to the temperature change of said large diameter coil spring (5a) and a response of expansion/shrink operation according to the temperature change of said small diameter coil spring (5b) are differentiated.

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Loading Nippon Thermostat Co. collaborators