JPH01300167A - Refrigerant heating cycle - Google Patents
Refrigerant heating cycleInfo
- Publication number
- JPH01300167A JPH01300167A JP12806088A JP12806088A JPH01300167A JP H01300167 A JPH01300167 A JP H01300167A JP 12806088 A JP12806088 A JP 12806088A JP 12806088 A JP12806088 A JP 12806088A JP H01300167 A JPH01300167 A JP H01300167A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- heat exchanger
- valve
- heating
- ejector
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 59
- 239000003507 refrigerant Substances 0.000 title claims abstract description 58
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
- F25B2341/001—Ejectors not being used as compression device
- F25B2341/0011—Ejectors with the cooled primary flow at reduced or low pressure
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は、冷媒加熱サイクルに関する。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to refrigerant heating cycles.
（従来の技術）
第３図は冷媒加熱サイクルを示す図であって、圧縮機１
には四方切換弁２を介して室外側熱交換器３、減圧装置
４、逆止弁５、膨張弁６および室内側熱交換器７が順次
環状に接続されている。なお、逆止弁５は冷房時の冷媒
の流れ方向が順方向となる様に設けられている。さらに
、四方切換弁２と圧縮機１の吸込側との間には、逆止弁
８が設けられている。また、逆止弁５と膨張弁６との間
から暖房管路９が分岐され、二方弁１０および冷媒加熱
器１１を介して逆止弁８の下流側において、圧縮機１の
吸込側に接続されている。この冷媒加熱器１１の近傍に
は、バーナ１２が設けられている。(Prior art) FIG. 3 is a diagram showing a refrigerant heating cycle, in which the compressor 1
An outdoor heat exchanger 3, a pressure reducing device 4, a check valve 5, an expansion valve 6, and an indoor heat exchanger 7 are sequentially connected in an annular manner through a four-way switching valve 2. Note that the check valve 5 is provided so that the flow direction of the refrigerant during cooling is in the forward direction. Furthermore, a check valve 8 is provided between the four-way switching valve 2 and the suction side of the compressor 1. Further, a heating pipe line 9 is branched from between the check valve 5 and the expansion valve 6, and is connected to the suction side of the compressor 1 on the downstream side of the check valve 8 via a two-way valve 10 and a refrigerant heater 11. It is connected. A burner 12 is provided near the refrigerant heater 11 .
しかして、冷房運転時においては、圧縮機１から吐出さ
れた冷媒は四方切換弁２を経て、室外側熱交換器３に送
られ、そこで凝縮せしめられた後、減圧装置４および膨
張弁６で減圧され室内側熱交換器７に流入し、そこで膨
張して室内の冷房作用を行ない、その後、圧縮機１に還
流する。During cooling operation, the refrigerant discharged from the compressor 1 passes through the four-way switching valve 2 and is sent to the outdoor heat exchanger 3, where it is condensed. The air is depressurized and flows into the indoor heat exchanger 7, where it expands to cool the room, and then returns to the compressor 1.
また、暖房運転時においては、圧縮機１から吐出された
冷媒は四方切換弁２を経て室内側熱交換器７に送られ、
そこで放熱作用を行なって室内の暖房が行なわれ、その
後暖房管路９を通って、冷媒加熱器１１においてバーナ
１２で加熱された後、圧縮機１に還流する。In addition, during heating operation, the refrigerant discharged from the compressor 1 is sent to the indoor heat exchanger 7 via the four-way switching valve 2,
There, the heat is radiated to heat the room, and then the refrigerant passes through the heating pipe 9 and is heated by the burner 12 in the refrigerant heater 11 before being returned to the compressor 1.
ここで、暖房運転開始時においては、室外側熱交換器３
に冷媒が凝縮してしまっているために、冷媒を暖房回路
中に戻す冷媒回収運転が行なわれる。すなわち、暖房運
転開始時に四方切換弁２を暖房モード状態、二方弁１０
を閉状態で、ある−定時間運転を行ない、室外側熱交換
器３内に滞留している冷媒を暖房回路中に戻した後に、
二方弁１０を開き、バーナ１２を点火することによって
、暖房能力のある実質的な暖房運転が開始される。Here, at the start of heating operation, the outdoor heat exchanger 3
Since the refrigerant has condensed during heating, a refrigerant recovery operation is performed to return the refrigerant to the heating circuit. That is, at the start of heating operation, the four-way switching valve 2 is placed in the heating mode, and the two-way valve 10 is placed in the heating mode.
After operating for a certain period of time in the closed state and returning the refrigerant remaining in the outdoor heat exchanger 3 to the heating circuit,
By opening the two-way valve 10 and igniting the burner 12, a substantial heating operation with heating capability is started.
（発明が解決しようとする課題）
ところが、暖房運転開始時には、暖房能力のない冷媒回
収運転が行なわれるために、暖房運転の立上がり特性が
悪いといった問題点がある。(Problems to be Solved by the Invention) However, at the start of the heating operation, a refrigerant recovery operation without heating capacity is performed, so there is a problem that the start-up characteristics of the heating operation are poor.
本発明は上述のような問題点に鑑みてなされたものであ
り、暖房運転の立上がり特性がよい冷媒加熱サイクルを
提供することを目的とする。The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a refrigerant heating cycle with good start-up characteristics in heating operation.
（課題を解決するための手段）
本発明は、圧縮機に四方切換弁を介して室外側熱交換器
、第一減圧装置、逆止弁、第二減圧装置および室内側熱
交換器を順次環状に接続し、二方弁および冷媒加熱器を
設けた暖房管路を逆止弁と第二減圧装置の間から分岐し
、上記圧縮機の吸込側に接続した冷媒加熱サイクルにお
いて、冷媒加熱器の上流にエジェクタを設け、このエジ
ェクタの吸込側に室外側熱交換器を連絡したことを特徴
とする。(Means for Solving the Problem) The present invention sequentially connects an outdoor heat exchanger, a first pressure reducing device, a check valve, a second pressure reducing device, and an indoor heat exchanger to a compressor via a four-way switching valve. In the refrigerant heating cycle, a heating pipe line equipped with a two-way valve and a refrigerant heater is connected to the refrigerant heater, and is branched from between the check valve and the second pressure reducing device, and connected to the suction side of the compressor. It is characterized in that an ejector is provided upstream, and an outdoor heat exchanger is connected to the suction side of the ejector.
（作 用）
暖房運転を開始すると冷媒加熱器の上流側に設けられた
エジェクタによって室外側熱交換器内に滞留していた冷
媒が冷媒加熱器に吸出されるとともに、この冷媒が冷媒
加熱器において加熱され、圧縮機を経て室内側熱交換器
に供給される。したがって、暖房運転開始と同時に暖房
能力のある暖房運転を行なうことができる。(Function) When heating operation is started, the refrigerant that has accumulated in the outdoor heat exchanger is sucked out to the refrigerant heater by the ejector installed upstream of the refrigerant heater, and this refrigerant is also transferred to the refrigerant heater. It is heated and supplied to the indoor heat exchanger via a compressor. Therefore, heating operation with heating capacity can be performed simultaneously with the start of heating operation.
（実施例）
以下、添附図面を参照して本発明の一実施例について説
明する。(Example) Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.
第１図は本発明における一実施例の冷媒加熱サイクルを
示す図であって、圧縮機１には四方切換弁２を介して室
外側熱交換器３、減圧装置４、逆止弁５、膨張弁６およ
び室内側熱交換器７が順次環状に接続されている。なお
、逆止弁５は冷房時の冷媒の流れ方向が順方向となるよ
うに設けられている。さらに、四方切換弁２と圧縮機１
の吸込側との間には圧縮機１の吸込側にのみ冷媒の流通
を許す逆止弁８が設けられている。また、逆止弁５と膨
張弁６との間から暖房管路９が分岐され、その先端が上
記逆止弁８の下流側に接続されている。この暖房管路９
には二方弁１０、エジェクタ１３および冷媒加熱器１１
がこの順に設けられており、この冷媒加熱器１１の近傍
にバーナ１２が設けられている。また、エジェクタ１３
の吸込側には四方切換弁２の吐出側と逆止弁８との間か
ら分岐した冷媒回収管路１４が接続されており、この冷
媒回収管路１４にはエジェクタ１３の吸込方向を順方向
とする逆止弁１５および二方弁１６が設けられている。FIG. 1 is a diagram showing a refrigerant heating cycle of an embodiment of the present invention, in which a compressor 1 is connected to an outdoor heat exchanger 3, a pressure reducing device 4, a check valve 5, an expansion A valve 6 and an indoor heat exchanger 7 are sequentially connected in an annular manner. Note that the check valve 5 is provided so that the flow direction of the refrigerant during cooling is the forward direction. Furthermore, the four-way switching valve 2 and the compressor 1
A check valve 8 that allows refrigerant to flow only to the suction side of the compressor 1 is provided between the compressor 1 and the suction side of the compressor 1 . Further, a heating pipe line 9 is branched from between the check valve 5 and the expansion valve 6, and its tip is connected to the downstream side of the check valve 8. This heating pipe 9
includes a two-way valve 10, an ejector 13 and a refrigerant heater 11.
are provided in this order, and a burner 12 is provided near the refrigerant heater 11. In addition, the ejector 13
A refrigerant recovery pipe 14 branched from between the discharge side of the four-way switching valve 2 and the check valve 8 is connected to the suction side of the ejector 13. A check valve 15 and a two-way valve 16 are provided.
しかして、冷房運転の際には、暖房管路９に設けられた
二方弁１０および冷媒回収管路１４に設けられた二方弁
１６を閉じた状態で、四方切換弁２を冷房運転にセット
すると、圧縮機１から吐出された冷媒が四方切換弁２を
経て、室外側熱交換器３に送られ、そこで凝縮せしめら
れた後、減圧装置４および膨張弁６で減圧され室内側熱
交換器７に流入し、そこで膨張して室内の冷房作用を行
ない、その後、圧縮機１に還流する。Therefore, during cooling operation, the four-way switching valve 2 is switched to cooling operation with the two-way valve 10 provided in the heating pipe 9 and the two-way valve 16 provided in the refrigerant recovery pipe 14 closed. When set, the refrigerant discharged from the compressor 1 passes through the four-way switching valve 2 and is sent to the outdoor heat exchanger 3, where it is condensed and then depressurized by the pressure reducing device 4 and expansion valve 6, and is then transferred to the indoor heat exchanger. The air flows into the compressor 7, expands there and performs a cooling effect in the room, and then returns to the compressor 1.
また、暖房運転時においては、上記二方弁１０および二
方弁１６を開とするとともに、四方切換弁２を暖房運転
にセットし、圧縮機ｌおよびバーナ１２をＯＮすると、
圧縮機１から吐出された冷媒が四方切換弁２を経て、室
内側熱交換器７に送られ、そこで放熱作用を行なった後
、二方弁１０およびエジェクタ１３を経て冷媒加熱器１
１に送られ、そこで加熱された後圧縮機１に還流され、
通常の暖房が行なわれる。一方、これと同時に上記エジ
ェクタ１３によって室外側熱交換器３内に滞留していた
冷媒が暖房回路中に吸引回収され、サイクル内のほとん
ど全ての冷媒が暖房運転に供されるようになる。In addition, during heating operation, the two-way valve 10 and the two-way valve 16 are opened, the four-way switching valve 2 is set to heating operation, and the compressor l and burner 12 are turned on.
The refrigerant discharged from the compressor 1 passes through the four-way switching valve 2 and is sent to the indoor heat exchanger 7, where it radiates heat, and then passes through the two-way valve 10 and the ejector 13 to the refrigerant heater 1.
1, where it is heated and then refluxed to the compressor 1,
Normal heating takes place. Meanwhile, at the same time, the ejector 13 suctions and recovers the refrigerant that has remained in the outdoor heat exchanger 3 into the heating circuit, so that almost all of the refrigerant in the cycle is used for heating operation.
しかして、暖房運転開始と同時に室外側熱交換器３内の
冷媒が暖房回路中に回収され、暖房運転に先だって冷媒
回収運転を行なう必要がない。Therefore, the refrigerant in the outdoor heat exchanger 3 is recovered into the heating circuit at the same time as the heating operation starts, and there is no need to perform the refrigerant recovery operation prior to the heating operation.
第２図は本発明における他の実施例であって、暖房管路
９に設けられたエジェクタ１３をバイパスするバイパス
管路１７が接続されており、このバイパス管路１７には
二方弁１８が設けられている。FIG. 2 shows another embodiment of the present invention, in which a bypass pipe 17 is connected to bypass the ejector 13 provided in the heating pipe 9, and a two-way valve 18 is connected to the bypass pipe 17. It is provided.
しかして、暖房運転を行なう際、開始時においては二方
弁１０を開、二方弁１６を開、二方弁１８を閉の状態で
運転を開始することにより、室外側熱交換器３内に滞留
している冷媒がエジェクタ１３により暖房回路中に回収
され、この回収した冷媒を回収と同時に冷媒加熱器１１
で加熱することにより、暖房運転の効率を向上させる。Therefore, when heating operation is started, the two-way valve 10 is opened, the two-way valve 16 is opened, and the two-way valve 18 is closed. The refrigerant stagnant in the heating circuit is recovered by the ejector 13, and the recovered refrigerant is simultaneously transferred to the refrigerant heater 11.
improves the efficiency of heating operation.
また、室外側熱交換器３内に滞留していた冷媒を回収し
終えた後には、二方弁１０を開、二方弁１６を閉、二方
弁１８を開の状態に切換えることによって、通常の暖房
運転を行なうことができる。Furthermore, after the refrigerant remaining in the outdoor heat exchanger 3 has been recovered, the two-way valve 10 is opened, the two-way valve 16 is closed, and the two-way valve 18 is opened. Normal heating operation can be performed.
なお、上記実施例においては、圧縮機１と同時に冷媒加
熱器１１を作動させるようにしたが、圧縮機１の作動後
ある一定時間経過後に冷媒加熱器１１が作動するように
してもよい。In the above embodiment, the refrigerant heater 11 is operated at the same time as the compressor 1, but the refrigerant heater 11 may be operated after a certain period of time has passed after the compressor 1 is operated.
本発明は上述のように構成したので、暖房運転開始によ
って室外側熱交換器内に滞留していた冷媒をエジェクタ
により暖房回路中に回収することができ、暖房運転に先
立って冷媒回収運転を行なう必要がなく、暖房運転の立
上がり特性を向上させることができる等の効果を奏する
。Since the present invention is configured as described above, the refrigerant accumulated in the outdoor heat exchanger can be recovered into the heating circuit by the ejector when the heating operation is started, and the refrigerant recovery operation is performed prior to the heating operation. There is no need for this, and there are effects such as being able to improve the start-up characteristics of heating operation.
第１図は本発明における一実施例の冷媒加熱サイクルを
示す図、第２図は他の実施例での要部説明図、第３図は
従来の冷媒加熱サイクルを示す図である。
１・・・圧縮機、２・・・四方切換弁、３・・・室外側
熱交換器、４・・・減圧装置、５・・・逆止弁、６・・
・膨張弁、７・・・室内側熱交換器、８・・・逆止弁、
９・・・暖房管路、１０・・・二方弁、１１・・・冷媒
加熱器、１２・・・バーナ、１３・・・エジェクタ、１
４・・・冷媒回収管路、１５・・・逆止弁、１６・・・
二方弁、１７・・・バイパス管路、１８・・・二方弁。
出願人代理人 佐 藤 −雄
／ｉ！７３ 図FIG. 1 is a diagram showing a refrigerant heating cycle according to one embodiment of the present invention, FIG. 2 is an explanatory diagram of main parts in another embodiment, and FIG. 3 is a diagram showing a conventional refrigerant heating cycle. DESCRIPTION OF SYMBOLS 1... Compressor, 2... Four-way switching valve, 3... Outdoor heat exchanger, 4... Pressure reducing device, 5... Check valve, 6...
・Expansion valve, 7... Indoor heat exchanger, 8... Check valve,
9... Heating pipe line, 10... Two-way valve, 11... Refrigerant heater, 12... Burner, 13... Ejector, 1
4... Refrigerant recovery pipe, 15... Check valve, 16...
Two-way valve, 17... Bypass pipeline, 18... Two-way valve. Applicant's agent: Sato-O/i! 73 Figure
Claims (1)
圧装置、逆止弁、第二減圧装置および室内側熱交換器を
順次環状に接続し、二方弁および冷媒加熱器を設けた暖
房管路を上記逆止弁と上記第二減圧装置の間から分岐し
、上記圧縮機の吸込側に接続した冷媒加熱サイクルにお
いて、冷媒加熱器の上流にエジェクタを設け、このエジ
ェクタの吸込側に室外側熱交換器を連絡したことを特徴
とする冷媒加熱サイクル。An outdoor heat exchanger, a first pressure reducing device, a check valve, a second pressure reducing device, and an indoor heat exchanger are sequentially connected to the compressor in an annular manner via a four-way switching valve, and a two-way valve and a refrigerant heater are provided. In a refrigerant heating cycle in which a heating pipe is branched from between the check valve and the second pressure reducing device and connected to the suction side of the compressor, an ejector is provided upstream of the refrigerant heater, and the ejector is connected to the suction side of the ejector. A refrigerant heating cycle characterized in that an outdoor heat exchanger is connected to the outside heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12806088A JPH01300167A (en) | 1988-05-25 | 1988-05-25 | Refrigerant heating cycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12806088A JPH01300167A (en) | 1988-05-25 | 1988-05-25 | Refrigerant heating cycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01300167A true JPH01300167A (en) | 1989-12-04 |
Family
ID=14975485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12806088A Pending JPH01300167A (en) | 1988-05-25 | 1988-05-25 | Refrigerant heating cycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01300167A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5430667B2 (en) * | 2009-10-20 | 2014-03-05 | 三菱電機株式会社 | Heat pump equipment |
-
1988
- 1988-05-25 JP JP12806088A patent/JPH01300167A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5430667B2 (en) * | 2009-10-20 | 2014-03-05 | 三菱電機株式会社 | Heat pump equipment |
| US9200820B2 (en) | 2009-10-20 | 2015-12-01 | Mitsubishi Electric Corporation | Heat pump apparatus with ejector cycle |
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