JPH08136012A - Refrigerant heater - Google Patents

Abstract

PURPOSE: To reduce the number of component parts of a refrigerant heater by providing an aluminum-extruded product wherein heat-absorbing plates, heat-exchanging fins, refrigerant pipe mounting parts, a combustion chamber mounting seat and an exhaust chamber wall are continued integrally with one another in an extruded direction. CONSTITUTION: A refrigerant heater main body 7 to be set in a combustion chamber A is made of an aluminum-extruded product 8 as a base material. In this aluminum-extruded product 8, heat-absorbing plates 2 are provided wherein heat-exchanging fins 5 are disposed on opposed faces 2a while refrigerant pipe mounting parts 9 which project in a cross- sectionally tongue-piece-shaped state and hold refrigerant pipes 6 among them are disposed on outer faces 2b. Further, the refrigerant heater main body 7 has an exhaust chamber wall 10, which is connected to the upper ends of the heat-absorbing plates 2, respectively, and which is formed into a predetermined cross-sectional shape so as to surround an exhaust chamber 4, and a combustion chamber mounting seat 11, which corresponds to a receiving part C of the combustion chamber A and which is formed integrally with the lower ends of the heat-absorbing plates 2, respectively. The heat-absorbing plates 2, exhaust chamber wall 10 and combustion chamber mounting seat 11 are formed by aluminum extrusion as an integrated cross section, and they are continued in an extruded direction, respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerant heater incorporated in an outdoor unit of a gas room air conditioner or the like to heat the refrigerant by heat exchange.

[0002]

2. Description of the Related Art Conventionally, this type of refrigerant heater has been disclosed in Japanese Patent Publication No.
As disclosed in Japanese Laid-Open Patent Publication No. 38864, a pair of heat absorbing plates are opposed to each other, and a plurality of heat exchange fins are integrally provided on each of the opposed surfaces to have a hot gas passage space from the lower side to the upper side. A heater is installed in the upper part of the combustion chamber via the mounting seat, and hot gas from the combustion chamber enters the passage space and exchanges heat with the heat exchange fins, while outside the exhaust chamber space where the upper cover member is attached. It is designed to be exhausted to. Further, a refrigerant pipe is arranged on the outside of the heat absorbing plate, and the heat received by the heat exchange fins is transferred to the refrigerant from the refrigerant pipe through the heat exchange fins and the heat absorbing plate so that the temperature of the refrigerant rises. It is provided.

[0003]

As described above, in the conventional refrigerant heater, the refrigerant heater main body has the two heat absorbing plates arranged to face each other, the upper cover on the upper side, and the combustion chamber mounting seat on the lower side. Are attached respectively, and the side cover is attached. However, since the number of members constituting the refrigerant heater is large as described above, it takes time and effort for assembling, which causes a rise in manufacturing cost.
In view of the above circumstances, it is an object of the present invention to reduce the number of members of the refrigerant heater, and an object thereof is to easily assemble the refrigerant heater.

[0004]

The present invention has been made in consideration of the above-mentioned problems, and a hot gas passage space through which gas flows upward from below is formed between a pair of heat absorbing plates facing each other. The refrigerant heater main body is provided with exchange fins, the refrigerant pipe is provided outside the heat absorbing plate of the refrigerant heater main body, and the lower part of the refrigerant heater main body is the combustion chamber mounting portion, In a refrigerant heater having an upper part as an exhaust chamber, the heat absorbing plate, the heat exchange fins, the refrigerant pipe mounting portion, the combustion chamber mounting seat, and the exhaust chamber wall are integrally formed in an aluminum extrusion continuous in the extrusion direction. A refrigerant heater having a molded body is provided to solve the above problems.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an embodiment shown in FIG. In the figure, 1 is a refrigerant heater. In the refrigerant heater 1, high-heat gas from a burner B built in a combustion chamber A passes through a high-temperature gas passage space 3 between a pair of heat absorbing plates 2 as in the conventional case. Is exhausted to the outside from the upper exhaust chamber 4, and when the gas passes through the high temperature gas passage space 3, heat is exchanged by the heat exchange fins 5 protruding from each of the facing surfaces 2a of the heat absorbing plate 2, and the heat exchange is performed. The heat transmitted through the fins 5 and the heat absorbing plate 2 reaches the refrigerant pipe 6 arranged and fixed on the outer surface 2b of the heat absorbing plate 2 to raise the temperature of the refrigerant flowing through the refrigerant pipe 6. In the present invention, the refrigerant heater main body 7 installed in the combustion chamber A has the aluminum extrusion molded body 8 as a base. The aluminum extrusion molding 8 is shown in FIG.
, The heat exchange fins 5 are arranged on the facing surface 2a, and the refrigerant pipe 6 is projected on the outer surface 2b in a tongue-like cross section.
The heat absorbing plate 2 in which the refrigerant pipe mounting portion 9 for sandwiching the refrigerant is arranged
An exhaust chamber wall 10 having a predetermined cross-sectional shape and connected to each of the upper ends of the heat absorbing plate 2 and surrounding the exhaust chamber 4, and a receiving portion C of the combustion chamber A.
And a combustion chamber mounting seat 11 that is integrated with each of the lower ends of the heat absorbing plates 2 corresponding to the above, and the heat absorbing plate 2, the exhaust chamber wall 10, and the combustion chamber mounting seat 11 are integrated as a cross section. The heat absorbing plate 2, the exhaust chamber wall 10, and the combustion chamber mounting seat 11 are formed by extrusion and are continuous in the extrusion direction.

Further, in the aluminum extruded body 8, a pair of jetty walls 12 are made to face each other at a required position on the facing surface 2a of the heat absorbing plate 2 and a required position on the inner surface of the exhaust chamber wall 10 in close proximity. Is formed by extrusion molding, and is continuous in the extrusion direction. Since the jetty 12 forming the screw groove 13 is continuous in the extruding direction, it has a heat exchange function with high-temperature gas.

In the figure, numeral 14 is an exhaust port, and numeral 15 is a gas inlet, which are opened by post-processing. The side wall (not shown) is attached to the side surface of the aluminum extruded product 8 having this cross-sectional configuration by using the screw groove 13 to form the refrigerant heater body 7, which is bent in a fixed pattern. By assembling the refrigerant pipe 6, the refrigerant heater 1 is obtained.

[0008]

As described above, according to the refrigerant heater of the present invention, a high-temperature gas passage space through which gas flows upward from below is formed between a pair of heat absorbing plates facing each other, and heat exchange fins are provided on respective facing surfaces of the heat absorbing plates. Is provided with a refrigerant heater body, the refrigerant pipe is provided outside the heat absorbing plate of the refrigerant heater body, the lower portion of the refrigerant heater body as a combustion chamber mounting portion, the upper portion of the refrigerant heater body In a refrigerant heater used as an exhaust chamber, the heat absorbing plate, the heat exchange fins, a refrigerant pipe mounting portion, a combustion chamber mounting seat, and an exhaust chamber wall are integrally formed into an aluminum extruded body that is continuous in the extrusion direction. Since it is characterized by having, it is not necessary to separately provide a conventional combustion chamber mounting seat or upper cover, the number of parts of the refrigerant heater is reduced, and the assembling work is simplified. That refrigerant heater Etc. it is possible to lower the manufacturing cost, in which excellent effects in practical use.

[Brief description of drawings]

FIG. 1 is an explanatory view showing in cross section one embodiment of a refrigerant heater according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Refrigerant heater 2 ... Endothermic plate 3 ... High temperature gas passage space 4 ... Exhaust chamber 5 ... Heat exchange fin 6 ... Refrigerant piping 7 ... Refrigerant heater main body 8 ... Aluminum extruded body 9 ... Refrigerant pipe mounting portion 10 ... Exhaust chamber Wall 11 ... Combustion chamber mounting seat 13 ... Screw groove

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukio Akita 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. (72) Kazuya Sugiyama, 2 Keihan Hondori, Moriguchi City, Osaka Prefecture 5-5, Sanyo Electric Co., Ltd.

Claims (2)

[Claims] 1. A refrigerant heater main body comprising a pair of opposed heat absorbing plates as a high temperature gas passage space through which gas flows from below to above, and heat exchange fins are provided on each of the facing surfaces of the heat absorbing plates. Refrigerant piping is provided outside the heat absorbing plate of the main body, the lower part of the refrigerant heater main body is the combustion chamber mounting portion, the upper part of the refrigerant heater main body is an exhaust chamber in the refrigerant heater, the heat absorbing plate and the heat exchange A refrigerant heater comprising an aluminum extruded body in which a fin, a refrigerant pipe mounting portion, a combustion chamber mounting seat, and an exhaust chamber wall are integrally formed and continuous in the extruding direction. 2. The refrigerant heater according to claim 1, wherein the extruded aluminum body is provided with a screw groove formed on the facing surface of the heat absorbing plate so as to face a jetty that also serves as heat exchange.