Thermal vaporizer

• US 5,038,394 A
• Filed: 10/06/1989
• Issued: 08/06/1991
• Est. Priority Date: 02/10/1988
• Status: Expired due to Term

• Current Assignee: Earth Chemical Company Limited (Earth Corp.)
• Original Assignee: Earth Chemical Company Limited (Earth Corp.)
• Inventors: Hasegawa, Takahiro, Nishimura, Akira, Mesaki, Junichiro, Kashihara, Takanobu
• Primary Examiner(s): Walberg, Teresa J.
• Application Number:
  US07/425,211
• Time in Patent Office: 669 Days
• Field of Search: 219/271-276, 392/395, 392/392, 392/394, 392/403, 392/405, 392/406
• US Class Current: 392/395
• CPC Class Codes: A01M 1/2077 using an electrical resistance as heat source A01M1/2083 takes precedence

Abstract

A cordless thermal vaporizer of the liquid type wherein the body of the vaporizer has a heater for heating a wick for drawing up a chemical solution from a bottle, and a socket disposed under the heater and removably fittable in the form of a cap to the bottle for attachment thereto. The body is reduced in weight and thereby made attachable to an electric outlet with stability. The solution bottle can be attached directly to the socket of the body and is therefor easy to replace.

Claims

1. A thermal vaporizer with an integral plug for insertion into an electrical outlet, comprising:

a vaporizer body;

a ring heater mounted within said vaporizer body;

a wick having a cross sectional area, for drawing up a chemical solution from a bottle which wick is insertable into the ring heater concentrically therewith;

a socket disposed under said heater with spacing therebetween;

a bottle fittable in the form of a removable cap to said socket such that when the bottle is in place, one or more openings are provided for said wick;

at least one air outlet formed in the top portion of said vaporizer body, said air outlets having a total opening area that is 2 to 40 times the cross sectional area of said wick;

at least one air intake formed in the bottom portion of the body and having a total opening area that is 1.5 to 20 times the cross sectional area of said wick; and

a plug electrically connected to said ring heater.

2. A thermal vaporizer as defined in claim 1 wherein the bottle can be attached to the socket of the vaporizer body by screw-thread engagement between an internally threaded portion of the socket and an externally threaded portion of the mouth of the bottle.

3. A thermal vaporizer as defined in claim 1 wherein the plug is provided on the rear side of the vaporizer body so as to be rotatable over an angular range of 0 to 90 degrees to render the vaporizer usable for electric outlets of both the horizontal arrangement type and the vertical arrangement type.

4. A thermal vaporizer as defined in claim 1 wherein the vaporizer body is provided at its lower end with a skirt for forming a circumferential clearance around the outer periphery of the bottle to be attached to the socket of the body, and the clearance is in communication with the interior of the body.

5. A thermal vaporizer as defined in claim 1, wherein one of said intake openings is located in a bottom portion of a main housing of said vaporizer body, and

a second air intake is formed in the socket portion.