JPS6296529U

JPS6296529U -

Info

Publication number: JPS6296529U
Application number: JP18854085U
Authority: JP
Priority date: 1985-12-05
Filing date: 1985-12-05
Publication date: 1987-06-19

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例による液面検出装
置の構成図、第２図は第１図に示す検出器の要部
断面拡大図、第３図は液面レベルと発振周波数の
関係を示す特性図、第４図は従来の液面検出装置
を示す構成図である。１は冷媒貯溜器、２は蒸発器、３は圧縮機の吸
入口、４は検出器、４ａは内部電極、４ｂは絶縁
部、４ｃは接手部、５は発振回路、６は液面レベ
ル検出回路、６ａは周波数検出部、６ｂは周波数
弁別回路、６ｃは処理回路、６ｄは出力回路。 Fig. 1 is a block diagram of a liquid level detection device according to an embodiment of this invention, Fig. 2 is an enlarged cross-sectional view of the main part of the detector shown in Fig. 1, and Fig. 3 shows the relationship between liquid level and oscillation frequency. The characteristic diagram shown in FIG. 4 is a configuration diagram showing a conventional liquid level detection device. 1 is a refrigerant reservoir, 2 is an evaporator, 3 is a compressor suction port, 4 is a detector, 4a is an internal electrode, 4b is an insulation part, 4c is a joint part, 5 is an oscillation circuit, 6 is a liquid level detection 6a is a frequency detection section, 6b is a frequency discrimination circuit, 6c is a processing circuit, and 6d is an output circuit.

補正昭６１．１０．２９実用新案登録請求の範囲を次のように補正する
。Amendment October 29, 1981 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】 (1) 液体が収容される容器を気密かつ絶縁状態
に貫通して内部に突出することにより、前記容器
の内壁面に近接して設けられる内部電極と、この
内部電極と前記容器の内壁面間における静電容量
を発振要件とする発振回路と、この発振回路の発
振周波数を判別して液面レベルを求める液面レベ
ル検出回路とによつて構成される液面検出装置。 (2) 容器は冷凍機器における冷凍サイクルの途
中に設けられる冷媒貯溜器であることを特徴とす
る実用新案登録請求の範囲第１項記載の液面検出
装置。 (3) 内部電極は、絶縁部を介して接手構造によ
り容器に固定されていることを特徴とする実用新
案登録請求の範囲第１項記載の液面検出装置。[Claims for Utility Model Registration] (1) An internal electrode that penetrates a container in which a liquid is stored in an airtight and insulated state and protrudes into the inside, and is provided close to the inner wall surface of the container; A liquid that is composed of an oscillation circuit whose oscillation requirement is the capacitance between the internal electrode and the inner wall of the container, and a liquid level detection circuit that determines the liquid level by determining the oscillation frequency of this oscillation circuit. Surface detection device. (2) The liquid level detection device according to claim 1, wherein the container is a refrigerant reservoir provided in the middle of a refrigeration cycle in a refrigeration device. (3) The liquid level detection device according to claim 1, wherein the internal electrode is fixed to the container by a joint structure via an insulating part.

Claims

[Claims for Utility Model Registration] (1) An internal electrode that is provided close to the inner wall surface of the container by penetrating the bottom of the container in which liquid is stored in an airtight and insulated state and protruding inside; It is composed of an oscillation circuit whose oscillation requirement is the capacitance between this internal electrode and the inner wall surface of the container, and a liquid level detection circuit which determines the liquid level by determining the oscillation frequency of this oscillation circuit. Liquid level detection device. (2) The liquid level detection device according to claim 1, wherein the container is a refrigerant reservoir provided in the middle of a refrigeration cycle in a refrigeration device. (3) The liquid level detection device according to claim 1, wherein the internal electrode is fixed to the bottom of the container by a joint structure via an insulating part.