JPH10111065A5

JPH10111065A5 -

Info

Publication number: JPH10111065A5
Application number: JP1996264043A
Authority: JP
Filing date: 1996-10-04
Publication date: 2004-09-02
Anticipated expiration: 2016-10-04

Description

【０００５】
【課題を解決するための手段】
上記目的は、外箱と内箱の間に断熱材を挿入してなる断熱箱体と、圧縮機、凝縮器、減圧装置、蒸発器の構成要素を配管で接続し、可燃性冷媒を含む混合冷媒あるいは単一成分からなる可燃性冷媒を封入してなる冷凍サイクルを設置した冷蔵庫において、前記蒸発器の伝熱管を多層構造とすることにより達成される。
また、前記伝熱管と前記伝熱管と接続された配管との接続部が断熱材内部もしくは冷蔵庫外部に設けられたことを特徴とする。 [0005]
[Means for solving the problem]
The above object can be achieved by providing a heat transfer tube of the evaporator with a multilayer structure in a refrigerator equipped with a refrigeration cycle in which a heat insulating box body formed by inserting a heat insulating material between an outer box and an inner box, and components of a compressor, a condenser, a pressure reducing device, and an evaporator are connected by piping, and a mixed refrigerant containing a flammable refrigerant or a flammable refrigerant consisting of a single component is sealed inside.
The refrigerator is also characterized in that a connection between the heat transfer tube and a pipe connected to the heat transfer tube is provided inside a heat insulating material or outside the refrigerator.

【０００６】
上記目的はまた、外箱と内箱の間に断熱材を挿入してなる断熱箱体と、圧縮機、凝縮器、減圧装置、蒸発器の構成要素を配管で接続し、可燃性冷媒を含む混合冷媒あるいは単一成分からなる可燃性冷媒を封入してなる冷凍サイクルを設置した冷蔵庫において、断熱材内部に設置した配管と、前記蒸発器の伝熱管と前記配管との接続部とを有機材からなる管で覆ったことによって達成される。
また、該有機材からなる管はその端面が冷蔵庫外部と連通するように設けたことを特徴とする。 [0006]
The above object can also be achieved by covering the piping installed inside the insulating material and the connecting portion between the heat transfer tube of the evaporator and the piping with a tube made of an organic material in a refrigerator having a refrigeration cycle in which components of a compressor, a condenser, a pressure reducing device and an evaporator are connected with piping and a mixed refrigerant containing a flammable refrigerant or a flammable refrigerant consisting of a single component is sealed in the refrigerator.
The pipe made of organic material is characterized in that its end face is provided so as to communicate with the outside of the refrigerator.

【００１７】
さらに、本実施の形態では可燃性冷媒としてプロパンとイソブタンの混合冷媒を例に取り説明したが、プロパン単一冷媒あるいはＨＦＣ−１５２ａのような可燃性冷媒であれば同様の効果を得る。
本実施形態によれば、蒸発器の伝熱管を複数の金属で構成された多層構造とするとともに、蒸発器と配管の接続部を断熱材内部もしくは冷蔵庫外部に設けることにより、冷蔵庫内部への冷媒漏れを防止できる。さらに、断熱材内部に設置した配管を有機材からなる管で覆い、管の端面と冷蔵庫外部が連通するように設けることにより、断熱材内部への冷媒漏れを防止でき、その結果、冷蔵庫内部への冷媒漏れを防止できる。 [0017]
Furthermore, in this embodiment, a mixed refrigerant of propane and isobutane is used as an example of a flammable refrigerant, but similar effects can be obtained with propane alone or with a flammable refrigerant such as HFC-152a.
According to this embodiment, the heat transfer tube of the evaporator has a multilayer structure made up of multiple metals, and the connection between the evaporator and the piping is provided inside the thermal insulation material or outside the refrigerator, thereby preventing refrigerant leakage into the refrigerator. Furthermore, the piping provided inside the thermal insulation material is covered with a pipe made of an organic material, and the end face of the pipe is provided so that it communicates with the outside of the refrigerator, thereby preventing refrigerant leakage into the thermal insulation material, and as a result, preventing refrigerant leakage into the refrigerator.

【００１８】
【発明の効果】
本発明によれば、可燃性冷媒を用いた冷蔵庫で、爆発の危険性を回避できる冷蔵庫を提供することができる。[0018]
[Effects of the Invention]
According to the present invention, it is possible to provide a refrigerator that uses a flammable refrigerant and that can avoid the risk of explosion .

Claims

A refrigerator having a refrigeration cycle in which an insulated box body formed by inserting an insulating material between an outer box and an inner box, and components of a compressor, a condenser, a pressure reducing device, and an evaporator are connected by piping, and a mixed refrigerant containing a flammable refrigerant or a flammable refrigerant consisting of a single component is sealed, characterized in that the heat transfer tube of the evaporator has a multi-layer structure .

2. The refrigerator according to claim 1, wherein a connection between the heat transfer tube and a pipe connected to the heat transfer tube is provided inside a heat insulating material or outside the refrigerator.

A refrigerator having a refrigeration cycle in which a heat-insulating box body formed by inserting a heat insulating material between an outer box and an inner box, a compressor, a condenser, a pressure reducing device, and an evaporator are connected by piping, and a mixed refrigerant containing a flammable refrigerant or a flammable refrigerant consisting of a single component is sealed,
A refrigerator characterized in that a pipe installed inside a heat insulating material and a connection portion between the heat transfer tube of the evaporator and the pipe are covered with a pipe made of an organic material.

4. The refrigerator according to claim 3, wherein the pipe made of organic material is provided so that its end surface communicates with the outside of the refrigerator.