JPH03271570A - Closed type electric motor-driven compressor - Google Patents
Closed type electric motor-driven compressorInfo
- Publication number
- JPH03271570A JPH03271570A JP7048290A JP7048290A JPH03271570A JP H03271570 A JPH03271570 A JP H03271570A JP 7048290 A JP7048290 A JP 7048290A JP 7048290 A JP7048290 A JP 7048290A JP H03271570 A JPH03271570 A JP H03271570A
- Authority
- JP
- Japan
- Prior art keywords
- suction
- suction chamber
- cylinder
- heat insulating
- refrigerant gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- -1 polybutylene terephthalate Polymers 0.000 claims description 4
- 239000000470 constituent Substances 0.000 claims 1
- 239000003507 refrigerant Substances 0.000 abstract description 20
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 238000005057 refrigeration Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Compressor (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は冷蔵庫、ニアコンディショナ等に使用される密
閉型電動圧縮機に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hermetic electric compressor used in refrigerators, near conditioners, and the like.
従来の技術
近年、密閉型電動圧縮機(以下圧縮機という)は、高効
率及び低騒音化が求められている。BACKGROUND ART In recent years, hermetic electric compressors (hereinafter referred to as compressors) are required to have high efficiency and low noise.
以下図面kg照しながら、従来の圧縮機の一例について
説明する。第3図、第4図は特開平1−37596号公
報に示されている圧縮機である。An example of a conventional compressor will be described below with reference to the drawing. FIGS. 3 and 4 show a compressor shown in Japanese Patent Application Laid-Open No. 1-37596.
1は密閉容器、2は前記密閉容器1内に弾性支持された
圧縮要素、3は前記圧縮要素の上部に配設された電動要
素である。4は固定子、5は回転子でちゃ、前記電動要
素3を構成している。6は吸入室7と吐出室8を形成し
たシリンダヘッド、9はシリンダ10を有したシリンダ
ブロック、11は吸入孔12と吐出孔13を有したパル
ププレ−ト、14はピストン、15はクランク軸、16
は前記クランク軸の偏芯部17に連結された連接棒、1
8は連通管を有した吸入マフラーであり、前記圧縮要素
2を構成している。1 is an airtight container, 2 is a compression element elastically supported within the airtight container 1, and 3 is an electric element disposed above the compression element. 4 is a stator, and 5 is a rotor, which constitute the electric element 3. 6 is a cylinder head forming a suction chamber 7 and a discharge chamber 8; 9 is a cylinder block having a cylinder 10; 11 is a pulp plate having a suction hole 12 and a discharge hole 13; 14 is a piston; 15 is a crankshaft; 16
1 is a connecting rod connected to the eccentric portion 17 of the crankshaft;
8 is a suction muffler having a communication pipe, and constitutes the compression element 2.
以上のような構成において、冷凍サインIv(図示せず
)よシ戻ってきた低温低圧の冷媒ガスは、吸入管(図示
せず)、前記吸入マフラー18を通9、前記シリンダ1
0へ導かれる。前記圧縮要素3により圧縮され高温高圧
と□った冷媒ガスは吐出ライン(図示せず)、吐出管(
図示せず)t−通シ、冷凍サインμ(図示せず)へ導か
れる構造となっている。In the above configuration, the low-temperature, low-pressure refrigerant gas returning from the refrigeration sign Iv (not shown) passes through the suction pipe (not shown), the suction muffler 18 9, and the cylinder 1.
It leads to 0. The refrigerant gas compressed by the compression element 3 to a high temperature and high pressure is discharged through a discharge line (not shown) and a discharge pipe (
(not shown) through t and is guided to a frozen sign μ (not shown).
発明が解決しようとする課題
しかしながら上記のような構成では、圧縮機が運転中は
、前記圧縮要素2及び前記電動要素3の発生熱によシ前
記シリンダヘッド6は加熱され高温と女る。筐た、前記
シリンダ10内で圧縮された高温高圧の冷媒ガスは、前
記シリンダヘッド6に形成された前記吐出室8へ導かれ
るため、前記吐出室8付近は非常に高温となる。したが
って、吸入冷媒ガスは前記吸入室7へ導かれた時に、特
に前記吐出室8gIIIから加熱される。このため、冷
媒ガスの比容積が増大し、前記シリンダ10へ流入する
ため、圧i機の容積効率を低下させるという課題を有し
ていた。Problems to be Solved by the Invention However, in the above configuration, when the compressor is in operation, the cylinder head 6 is heated by the heat generated by the compression element 2 and the electric element 3, resulting in a high temperature. The high-temperature, high-pressure refrigerant gas compressed within the cylinder 10 is led to the discharge chamber 8 formed in the cylinder head 6, so the temperature near the discharge chamber 8 becomes extremely high. Therefore, when the suction refrigerant gas is led to the suction chamber 7, it is heated particularly from the discharge chamber 8gIII. For this reason, the specific volume of the refrigerant gas increases and flows into the cylinder 10, resulting in a problem of lowering the volumetric efficiency of the pressure i machine.
本発明は上記課題に鑑み、吸入室における冷媒ガスの加
P!t−低減し、容積効率の高い圧@機を提供するもの
である。In view of the above-mentioned problems, the present invention has been developed to increase the amount of refrigerant gas in the suction chamber! The present invention provides a pressure machine with reduced t-reduction and high volumetric efficiency.
課題を解決するための手段
以上のような課題を解決するために本発明の密閉型電動
圧縮機は、吸入室の内壁との間にすき間をもつように熱
伝導率の小さいポリブチレンテレフタレイトの断熱キャ
ップを装着させるという構成を備えたものである。Means for Solving the Problems In order to solve the above-mentioned problems, the hermetic electric compressor of the present invention uses polybutylene terephthalate having low thermal conductivity so as to have a gap with the inner wall of the suction chamber. It is equipped with a structure in which a heat insulating cap is attached.
作 用
本発明は上記した構成により、冷媒ガスが吸入室へ導か
れた時シリンダヘッドと接つすることなく吸入室へ導き
、冷媒のm熱を防止するとともに、すき間を断熱空間と
して用いるので、シリンダヘッドの熱が断熱キャップ筐
で伝わりにくいものである。Effects of the present invention With the above-described configuration, when refrigerant gas is guided to the suction chamber, it is guided to the suction chamber without coming into contact with the cylinder head, thereby preventing heat from the refrigerant and using the gap as a heat insulating space. Heat from the cylinder head is difficult to transfer through the heat insulating cap housing.
実施例
以下本発明の一実施例の圧縮機について、図面を参照し
ながら説明する。尚、従来例と同一部品は同一符号を用
いて説明し、構成、動作の同じところは省略する。EXAMPLE Hereinafter, a compressor according to an example of the present invention will be described with reference to the drawings. Note that parts that are the same as those in the conventional example will be described using the same reference numerals, and parts that are the same in structure and operation will be omitted.
19′は吸入マフラー18に有された熱伝導率の小さい
ポリブチレンテレフタレイト(以下PBTとよぶ)の連
通管、20は吸入室7の内壁との闇にすき間をもつよう
に装着した熱伝導率の小さいPBT等の断熱キャップで
外周にリブ20aを有するとともに前記連通管19′が
挿入される孔20bが設けられている。21は前記吸入
室7の内壁と前記断熱キャップ2oとのすき間の断熱層
である。19' is a communication pipe made of polybutylene terephthalate (hereinafter referred to as PBT) with low thermal conductivity, which is included in the suction muffler 18, and 20 is a heat conduction pipe installed with a gap between it and the inner wall of the suction chamber 7. The cap is made of a heat insulating cap made of PBT or the like with a low ratio and has a rib 20a on the outer periphery and a hole 20b into which the communication pipe 19' is inserted. 21 is a heat insulating layer between the inner wall of the suction chamber 7 and the heat insulating cap 2o.
以上のような構成に釦いて、冷凍サインlv(図示せず
)より戻ってきた低温低圧の冷媒ガスは、吸入管(図示
せず)、前記吸入マフラー18を通り、前記シリンダ1
oへ導かれる。前記圧縮要素3Vcよシ圧縮され高温高
圧となった冷媒ガスは吐出フィン(図示せず)、吐出管
(図示せず)を通り、冷凍サイクル(図示せず)へ導か
れる構造となっている。With the above-described configuration, the low-temperature, low-pressure refrigerant gas returned from the refrigeration sign lv (not shown) passes through the suction pipe (not shown), the suction muffler 18, and enters the cylinder 1.
lead to o. The refrigerant gas compressed by the compression element 3Vc to a high temperature and high pressure is guided to a refrigeration cycle (not shown) through a discharge fin (not shown) and a discharge pipe (not shown).
この様な構造を有する圧縮機にかいては、熱伝導率の小
さいPBT等の前記断熱キャップ20が前記吸入室7の
内壁との間に前記断P、層21をもつように装着されて
おり、高温となったシリンダヘッド6からの前記吸入室
7へ流入する吸入冷媒ガスへの加熱を前記断熱キャップ
20と前記l!7r熱層21に充満した冷媒ガスによっ
て低減することができる。筐た、前記連通管19′も熱
伝導率の小さいPBT等の材料であるため、前記連通管
19′を通る時も吸入冷媒ガスへの加熱を低減すること
ができる。In a compressor having such a structure, the heat insulating cap 20 made of PBT or the like having low thermal conductivity is installed so as to have the above-mentioned cross section P and layer 21 between it and the inner wall of the suction chamber 7. , the heat insulating cap 20 and the l! It can be reduced by the refrigerant gas filling the 7r heat layer 21. Since the housing and the communication pipe 19' are also made of a material such as PBT which has a low thermal conductivity, heating of the suction refrigerant gas can be reduced even when passing through the communication pipe 19'.
したがって、シリンダ10に流入する冷媒ガスの比容積
の増加を低減することができ、圧a機の容積効率を向上
することができる。Therefore, it is possible to reduce the increase in the specific volume of the refrigerant gas flowing into the cylinder 10, and it is possible to improve the volumetric efficiency of the compressor.
発明の効果
以上のように本発明は、吸入室の内壁との間に断熱層を
もつように熱伝導率の小さいPBT等の断熱キャップを
装着させることにより、吸入室へ導かれる時の冷媒ガス
の加熱を低減することができるので、吸入冷媒ガスの比
容積の増加を低減し、密閉型電動圧縮機の容積効率を向
上させることができる。Effects of the Invention As described above, the present invention provides a heat insulating cap made of PBT or the like having a low thermal conductivity so as to have a heat insulating layer between it and the inner wall of the suction chamber. Since the heating of the refrigerant gas can be reduced, the increase in the specific volume of the suction refrigerant gas can be reduced, and the volumetric efficiency of the hermetic electric compressor can be improved.
第1図は本発明の一実施例における密閉型電動圧縮機の
要部断面図、第2図は第1図の■−■触矢視図、第3図
は従来の密閉型電動圧縮機の断面図、第4図は第3図の
要部断面図である。
1・・・・・・密閉容器、2・・・・・・正補要素、3
・・・・・・電動要素、6・・・・・・シリンダヘッド
、7・・・・・・吸入室、8・・・・・・吐出室、9・
・・・・・シリンダブロック、10・・・・・・シリン
ダ、11・・・・・・バルブプレート、12・・・・・
・吸入孔、13・・・・・・吐出孔、14・・・・・・
ピア)ン、18・・・・パ吸入マフラー、19′−・・
・・・連通管、2o・・・・・・断熱キャップ、20a
・・・・・・リブ、20b・・・・・・挿入孔、21・
・・・・・断熱層。Fig. 1 is a sectional view of essential parts of a hermetic electric compressor according to an embodiment of the present invention, Fig. 2 is a tactile view taken along the line ■-■ in Fig. 1, and Fig. 3 is a sectional view of a conventional hermetic electric compressor. 4 is a sectional view of a main part of FIG. 3. 1... Airtight container, 2... Correction element, 3
......Electric element, 6...Cylinder head, 7...Suction chamber, 8...Discharge chamber, 9...
...Cylinder block, 10...Cylinder, 11...Valve plate, 12...
・Suction hole, 13...Discharge hole, 14...
pian), 18...pa suction muffler, 19'-...
...Communication pipe, 2o...Insulation cap, 20a
...Rib, 20b...Insertion hole, 21.
...Insulation layer.
Claims (3)
ダを有したシリンダブロックを構成要素の1つとする圧
縮要素と、前記シリンダブロックに取付られる吸入室と
吐出室を形成したシリンダヘッドと、ピストンを摺動さ
せる前記シリンダの端面と前記シリンダヘッドとの間に
介した吸入孔と吐出孔を有したバルブプレートと、一端
が前記吸入室に連通している連通管を有した吸入マフラ
ーとを備え、前記吸入室の内壁との間にすき間をもつよ
うに熱伝導率の小さいポリブチレンテレフタレイト断熱
キャップを装着したことを特徴とした密閉型電動圧縮機
。(1) A compression element whose constituent elements include a cylinder block having an electric element and a cylinder elastically supported in a closed container, a cylinder head attached to the cylinder block and forming a suction chamber and a discharge chamber, and a piston. a valve plate having a suction hole and a discharge hole interposed between an end surface of the cylinder on which the cylinder slides and the cylinder head; and a suction muffler having a communication pipe whose one end communicates with the suction chamber. . A hermetic electric compressor, characterized in that a polybutylene terephthalate heat insulating cap with low thermal conductivity is attached so as to have a gap between it and the inner wall of the suction chamber.
レイトからなることを特徴とした請求項1記載の密閉型
電動圧縮機。(2) The hermetic electric compressor according to claim 1, wherein the communicating pipe is made of polybutylene terephthalate having low thermal conductivity.
するリブを外周に有するとともに、前記連通管が挿入さ
れる孔を有してなる請求項1記載の密閉型電動圧縮機。(3) The hermetic electric compressor according to claim 1, wherein the heat insulating cap is container-shaped and has a rib on its outer periphery that contacts the wall surface of the suction chamber, and has a hole into which the communication pipe is inserted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7048290A JPH03271570A (en) | 1990-03-20 | 1990-03-20 | Closed type electric motor-driven compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7048290A JPH03271570A (en) | 1990-03-20 | 1990-03-20 | Closed type electric motor-driven compressor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH03271570A true JPH03271570A (en) | 1991-12-03 |
Family
ID=13432785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7048290A Pending JPH03271570A (en) | 1990-03-20 | 1990-03-20 | Closed type electric motor-driven compressor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03271570A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102251950A (en) * | 2011-07-07 | 2011-11-23 | 广州万宝集团压缩机有限公司 | Exhausting and sound deadening structure of refrigerator compressor |
-
1990
- 1990-03-20 JP JP7048290A patent/JPH03271570A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102251950A (en) * | 2011-07-07 | 2011-11-23 | 广州万宝集团压缩机有限公司 | Exhausting and sound deadening structure of refrigerator compressor |
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