Device for heating fluid controller

• US 6,060,691 A
• Filed: 04/20/1998
• Issued: 05/09/2000
• Est. Priority Date: 04/21/1997
• Status: Expired due to Term

• Current Assignee: Fujikin Incorporated
• Original Assignee: Fujikin Incorporated
• Inventors: Tanigawa, Tsutomu, Yamaji, Michio, Ikeda, Nobukazu, Minami, Yukio
• Primary Examiner(s): Walberg, Teresa
• Assistant Examiner(s): FASTOVSKY, LEONID M
• Application Number:
  US09/062,831
• Time in Patent Office: 750 Days
• Field of Search: 219/535, 219/538, 219/202, 219/206, 219/205, 219/536, 219/476, 219/201, 219/301, 219/311, 219/537, 219/528, 219/540, 219/530, 392/303, 392/309, 392/311, 137/341, 137/315
• US Class Current: 219/201
• CPC Class Codes: F16K 49/002 Electric heating means
• CPC Class Codes: Y10T 137/6606 With electric heating element

Abstract

A device for heating a fluid controller comprises a pair of platelike side heaters pressed respectively against a pair of opposite side faces of a body of the fluid controller with an insulating layer provided between each heater and each side face, a pair of side holding members each having a recessed portion for fitting the side heater therein and fastened to each other with screws to hold the controller body therebetween from opposite sides of the body, and a cushion member interposed between each side heater and a bottom face of the recessed portion for pressing the side heater against the controller body side face.

Claims

1. A device for heating a fluid controller which device comprises a pair of platelike side heaters pressed respectively against a pair of opposite side faces of a body of the fluid controller with an electrical insulating layer provided between each heater and each side face, a pair of side holding members each having a recessed portion for fitting the side heater therein and fastened to each other with screws to hold the controller body therebetween from opposite sides of the body, and a cushion member interposed between each side heater and a bottom face of the recessed portion for pressing the side heater against the controller body side face.

2. A device for heating a fluid controller according to claim 1 wherein each side heater is a constant-temperature heat generator having an automatic temperature control function for giving a constant temperature merely when a voltage is applied to the heat generator.

3. A device for heating a fluid controller according to claim 1 which further comprises a platelike bottom heater pressed against a bottom surface of the controller body with an electrical insulating layer provided therebetween, a bottom holding member having a recessed portion for fitting the bottom heater therein and fastened to the bottom surface of the controller body with screws, and a cushion member interposed between the bottom heater and a bottom face of the recessed portion of the bottom holding member for pressing the bottom heater against the controller body bottom surface.

4. A device for heating a fluid controller according to claim 3 wherein the bottom heater is a constant-temperature heat generator having an automatic temperature control function for giving a constant temperature merely when a voltage is applied to the heat generator.

5. A device for heating a fluid controller according to claim 4 wherein the side heaters are connected in series with each other, and the bottom heater is connected in parallel with the side heaters.