JP2018145823A5 - - Google Patents
Download PDFInfo
- Publication number
- JP2018145823A5 JP2018145823A5 JP2017039254A JP2017039254A JP2018145823A5 JP 2018145823 A5 JP2018145823 A5 JP 2018145823A5 JP 2017039254 A JP2017039254 A JP 2017039254A JP 2017039254 A JP2017039254 A JP 2017039254A JP 2018145823 A5 JP2018145823 A5 JP 2018145823A5
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- ejector
- stop condition
- nozzle
- compressor
- 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.)
- Granted
Links
- 239000003507 refrigerant Substances 0.000 claims description 123
- 238000005057 refrigeration Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims 7
- 239000002826 coolant Substances 0.000 claims 1
- 230000002093 peripheral Effects 0.000 claims 1
- 230000000630 rising Effects 0.000 claims 1
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 210000003800 Pharynx Anatomy 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Description
従って、可変ノズル部を有するエジェクタ(15)と可変絞り機構(16)とを一体化させることができる。この際、ノズル部(15a)の通路断面積および減圧部(20b)の絞り開度を、共通する1つの駆動機構部(24)によって調整するので、複数の駆動機構部を備えるものに対して、大型化を招くことなく、可変ノズル部を有するエジェクタ(15)および可変絞り機構(16)を一体化させることができる。 Therefore, the ejector (15) having the variable nozzle portion and the variable throttle mechanism (16) can be integrated. At this time, since the passage sectional area of the nozzle portion (15a) and the throttle opening degree of the pressure reducing portion ( 20b ) are adjusted by one common drive mechanism portion (24), a plurality of drive mechanism portions are provided. The ejector (15) having the variable nozzle portion and the variable throttling mechanism (16) can be integrated without causing an increase in size.
さらに、駆動機構部(24)が、ノズル部(15a)および減圧部(20b)を閉塞させる際には、減圧部(20b)よりも先にノズル部(15a)を閉塞させ、ノズル部(15a)および減圧部(20b)を開く際には、ノズル部(15a)よりも先に減圧部(20b)を開く。 Furthermore, when the drive mechanism (24) closes the nozzle (15a) and the pressure reducing portion ( 20b ), the nozzle (15a) is closed before the pressure reducing portion ( 20b ), and the nozzle (15a) is closed. ) and when opening vacuum portion (20b) is previously reduced pressure section than the nozzle portion (15a) opening a (20b).
また、請求項5に記載の発明は、冷媒を圧縮して吐出する圧縮機(11)と、圧縮機から吐出された冷媒を放熱させる放熱器(12)と、放熱器(12)から流出した冷媒の流れを分岐する分岐部(14)と、分岐部にて分岐された一方の冷媒を減圧させる可変ノズル部から噴射される噴射冷媒の吸引作用によって冷媒吸引口(21b)から冷媒を吸引し、噴射冷媒と冷媒吸引口から吸引された吸引冷媒との混合冷媒を昇圧させるエジェクタ(15)と、分岐部にて分岐された他方の冷媒を減圧させる可変絞り機構(16)と、可変絞り機構にて減圧された冷媒を蒸発させて冷媒吸引口側へ流出させる第1蒸発器(17)と、エジェクタ(15)から流出した冷媒を蒸発させて圧縮機の吸入側へ流出させる第2蒸発器(18)と、可変ノズル部の通路断面積を制御するエジェクタ制御部(40b)と、予め定めたエジェクタ停止条件が成立したことを判定する停止条件判定部(S1)と、第1蒸発器の複数の部位の温度を検出する蒸発器温度検出部(47)と、を備え、
エジェクタ制御部は、停止条件判定部によってエジェクタ停止条件が成立したと判定された際に、可変ノズル部を閉塞させるものであり、
停止条件判定部は、蒸発器温度検出部が検出した最高温度から最低温度を減算した温度差(ΔT)が予め定めた基準温度差(KΔT)以上となった際に、エジェクタ停止条件が成立したと判定するものであるエジェクタ式冷凍サイクルである。
In the invention according to claim 5 , the compressor (11) for compressing and discharging the refrigerant, the radiator (12) for radiating the refrigerant discharged from the compressor, and the radiator (12) flowed out The refrigerant is drawn from the refrigerant suction port (21b) by the suction action of the injected refrigerant which is injected from the branch portion (14) for branching the flow of the refrigerant and the variable nozzle portion for depressurizing one of the refrigerant branched at the branch portion. An ejector (15) for pressurizing the mixed refrigerant of the injected refrigerant and the suction refrigerant sucked from the refrigerant suction port; a variable throttle mechanism (16) for decompressing the other refrigerant branched at the branch portion; and a variable throttle mechanism The first evaporator (17) which evaporates the refrigerant decompressed in the above and flows out to the refrigerant suction port side, and the second evaporator which evaporates the refrigerant flowing out from the ejector (15) and flows out to the suction side of the compressor (18) and the variable nozzle The ejector controller for controlling the cross-sectional area (40b), determines the stop condition determining section that predetermined ejector stop condition is satisfied and (S1), for detecting the temperature of a plurality of portions of the first evaporator An evaporator temperature detection unit (47) ;
Ejector controller state, and are not to be closed when the ejector stop condition is determined to be satisfied by the stop condition determination unit, a variable nozzle part,
The stop condition determination unit satisfies the ejector stop condition when the temperature difference (ΔT) obtained by subtracting the lowest temperature from the highest temperature detected by the evaporator temperature detection unit becomes equal to or greater than a predetermined reference temperature difference (KΔT). It is an ejector-type refrigeration cycle which is determined as
すなわち、本請求項に記載の発明によれば、負荷変動が生じた場合や、起動時において、適切に作動するエジェクタ式冷凍サイクルを提供することができる。
また、請求項7に記載の発明は、冷媒を圧縮して吐出する圧縮機(11)と、圧縮機から吐出された冷媒を放熱させる放熱器(12)と、放熱器から流出した冷媒の流れを分岐する分岐部(14)と、分岐部にて分岐された一方の冷媒を減圧させる可変ノズル部から噴射される噴射冷媒の吸引作用によって冷媒吸引口(21b)から冷媒を吸引し、噴射冷媒と冷媒吸引口から吸引された吸引冷媒との混合冷媒を昇圧させるエジェクタ(15)と、分岐部にて分岐された他方の冷媒を減圧させる可変絞り機構(16)と、可変絞り機構にて減圧された冷媒を蒸発させて冷媒吸引口側へ流出させる第1蒸発器(17)と、エジェクタから流出した冷媒を蒸発させて圧縮機の吸入側へ流出させる第2蒸発器(18)と、可変ノズル部の通路断面積を制御するエジェクタ制御部(40b)と、予め定めたエジェクタ停止条件が成立したことを判定する停止条件判定部(S1)と、を備え、
エジェクタ制御部は、停止条件判定部によってエジェクタ停止条件が成立したと判定された際に、可変ノズル部を閉塞させるものであり、
停止条件判定部は、圧縮機が起動してから予め定めた基準時間が経過する迄は、エジェクタ停止条件が成立したと判定するものであるエジェクタ式冷凍サイクルである。
これによれば、請求項5に記載の発明と同様の効果を得ることができる。
また、請求項9に記載の発明は、冷媒を圧縮して吐出する圧縮機(11)と、圧縮機から吐出された冷媒を放熱させる放熱器(12)と、放熱器から流出した冷媒の流れを分岐する分岐部(14)と、分岐部にて分岐された一方の冷媒を減圧させる可変ノズル部から噴射される噴射冷媒の吸引作用によって冷媒吸引口(21b)から冷媒を吸引し、噴射冷媒と冷媒吸引口から吸引された吸引冷媒との混合冷媒を昇圧させるエジェクタ(15)と、分岐部にて分岐された他方の冷媒を減圧させる可変絞り機構(16)と、可変絞り機構にて減圧された冷媒を蒸発させて冷媒吸引口側へ流出させる第1蒸発器(17)と、エジェクタから流出した冷媒を蒸発させて圧縮機の吸入側へ流出させる第2蒸発器(18)と、可変ノズル部の通路断面積を制御するエジェクタ制御部(40b)と、予め定めたエジェクタ停止条件が成立したことを判定する停止条件判定部(S1)と、を備え、
エジェクタ制御部は、停止条件判定部によってエジェクタ停止条件が成立したと判定された際に、可変ノズル部を閉塞させるものであり、停止条件判定部は、圧縮機の冷媒吐出能力が予め定めた基準吐出能力以下となっている際は、エジェクタ停止条件が成立したと判定するものであるエジェクタ式冷凍サイクルである。
これによれば、請求項5に記載の発明と同様の効果を得ることができる。
That is, according to the invention described in the claims, it is possible to provide an ejector-type refrigeration cycle that operates properly when load fluctuation occurs or at start-up.
The invention according to claim 7 is a compressor (11) for compressing and discharging a refrigerant, a radiator (12) for radiating the refrigerant discharged from the compressor, and a flow of refrigerant flowing out of the radiator The refrigerant is sucked from the refrigerant suction port (21b) by the suction action of the injection refrigerant injected from the branch part (14) for branching the refrigerant and the variable nozzle part for reducing the pressure of one refrigerant branched in the branch part. Ejector (15) which pressurizes mixed refrigerant of refrigerant and suction refrigerant sucked from the refrigerant suction port, variable throttling mechanism (16) which decompresses the other refrigerant branched at the branch part, and pressure reduction by the variable throttling mechanism First evaporator (17) which evaporates the refrigerated refrigerant to flow out to the refrigerant suction port side, and a second evaporator (18) which evaporates the refrigerant flowing out from the ejector and flow out to the suction side of the compressor The passage cross-sectional area of the nozzle Comprising Gosuru ejector controller and (40b), with a predetermined ejector determines stop condition determining section that the stop condition is satisfied (S1), a
The ejector control unit closes the variable nozzle unit when it is determined by the stop condition determination unit that the ejector stop condition is satisfied.
The stop condition determination unit is an ejector-type refrigeration cycle that determines that an ejector stop condition is satisfied until a predetermined reference time elapses after the compressor is started.
According to this, the same effect as that of the invention described in claim 5 can be obtained.
In the invention according to claim 9, a compressor (11) for compressing and discharging the refrigerant, a radiator (12) for radiating the refrigerant discharged from the compressor, and a flow of the refrigerant flowing out from the radiator The refrigerant is sucked from the refrigerant suction port (21b) by the suction action of the injection refrigerant injected from the branch part (14) for branching the refrigerant and the variable nozzle part for reducing the pressure of one refrigerant branched in the branch part. Ejector (15) which pressurizes mixed refrigerant of refrigerant and suction refrigerant sucked from the refrigerant suction port, variable throttling mechanism (16) which decompresses the other refrigerant branched at the branch part, and pressure reduction by the variable throttling mechanism First evaporator (17) which evaporates the refrigerated refrigerant to flow out to the refrigerant suction port side, and a second evaporator (18) which evaporates the refrigerant flowing out from the ejector and flow out to the suction side of the compressor The passage cross-sectional area of the nozzle Comprising Gosuru ejector controller and (40b), with a predetermined ejector determines stop condition determining section that the stop condition is satisfied (S1), a
The ejector control unit is configured to close the variable nozzle unit when it is determined by the stop condition determination unit that the ejector stop condition is satisfied, and the stop condition determination unit is a standard that the refrigerant discharge capacity of the compressor is predetermined. When the discharge capacity is equal to or less than the discharge capacity, it is an ejector-type refrigeration cycle that determines that the ejector stop condition is satisfied.
According to this, the same effect as that of the invention described in claim 5 can be obtained.
この状態から、駆動機構部24が絞り弁23を絞り通路20bの通路断面積を縮小させる側へ変位させると、コイルバネ22cの作用によって、ニードル弁22もノズル部15aの通路断面積を縮小させる側へ変位する。そして、ニードル弁22がノズル部15aの喉部に当接すると、ノズル部15aが閉塞される(図6のC2)。この際、絞り弁23は、絞り通路20bの出口に当接しておらず、絞り通路20bは開いている。 From this state, when the drive mechanism portion 24 displaces the throttle valve 23 to the side of reducing the cross-sectional area of the throttle passage 20b , the needle valve 22 also reduces the cross-sectional area of the nozzle portion 15a by the action of the coil spring 22c. To When the needle valve 22 abuts on the throat of the nozzle 15a, the nozzle 15a is closed (C2 in FIG. 6). At this time, the throttle valve 23 is not in contact with the outlet of the throttle passage 20b, and the throttle passage 20b is open.
送風機18aは、空調制御装置40から出力される制御電圧によって回転数(送風空気量)が制御される電動送風機である。第2蒸発器18の冷媒出口には、圧縮機11の吸入口側が接続されている。 The blower 18a is an electric blower whose number of rotations (the amount of blowing air) is controlled by a control voltage output from the air conditioning control device 40. The suction port side of the compressor 11 is connected to the refrigerant outlet of the second evaporator 18.
より具体的には、第1蒸発器17および第2蒸発器18にて冷却される送風空気の温度分布の拡大を抑制することができる。また、サイクルの起動直後等に、エジェクタ15のノズル部15aを閉塞させることができるので、ノズル部15aを通過する冷媒通過音が耳障りな音になってしまうことがない。 More specifically, the expansion of the temperature distribution of the blast air cooled by the first evaporator 17 and the second evaporator 18 can be suppressed. In addition, since the nozzle portion 15a of the ejector 15 can be closed immediately after the start of the cycle, etc., the refrigerant passing sound passing through the nozzle portion 15a will not be an offensive noise.
また、エジェクタ式冷凍サイクル10bにおいて、合流部33の冷媒出口を圧縮機11の吸入側へ直接接続し、第1蒸発器17の冷媒出口を冷媒吸引口21b側へ接続してもよい。 Further, in the refrigerant cycle 10b, and the refrigerant outlet of the junction unit 33 directly connected to the suction side of the compressor 11, the refrigerant outlet of the first evaporator 17 may be connected to the refrigerant suction port 21b side.
Claims (9)
冷媒を減圧させて噴射するノズル部(15a)と、
冷媒を減圧させる減圧部(20b)と、
前記ノズル部から噴射された噴射冷媒の吸引作用によって外部から冷媒を吸引する冷媒吸引口(21b)、および前記噴射冷媒と前記冷媒吸引口から吸引された吸引冷媒との混合冷媒を昇圧させる昇圧部(15b)が形成されたボデー部(21)と、
前記ノズル部の通路断面積を変化させるノズル側弁体部(22)と、
前記減圧部の通路断面積を変化させる減圧側弁体部(23)と、
前記ノズル側弁体部および前記減圧側弁体部を変位させる駆動機構部(24)と、を備え、
前記駆動機構部は、前記ノズル部および前記減圧部を開いた状態から閉塞させる際には、前記減圧部よりも先に前記ノズル部を閉塞させ、さらに、前記ノズル部および前記減圧部を閉塞させた状態から開く際には、前記ノズル部よりも先に前記減圧部を開くものであるエジェクタモジュール。 An ejector module applied to an ejector refrigeration cycle (10, 10b), comprising:
A nozzle portion (15a) for decompressing and injecting a refrigerant;
A decompression unit (20b) that decompresses the refrigerant;
A refrigerant suction port (21b) for suctioning the refrigerant from the outside by the suction action of the jetted refrigerant injected from the nozzle unit, and a pressure-boosting section for pressurizing mixed refrigerant of the jetted refrigerant and the suctioned refrigerant sucked from the refrigerant suction port A body portion (21) in which (15b) is formed;
A nozzle-side valve body portion (22) for changing a passage cross-sectional area of the nozzle portion;
A pressure reducing side valve body (23) for changing the passage cross sectional area of the pressure reducing portion;
And a drive mechanism (24) for displacing the nozzle side valve body and the pressure reducing side valve body.
When closing the nozzle unit and the pressure reducing unit from the open state, the driving mechanism unit closes the nozzle unit earlier than the pressure reducing unit, and further closes the nozzle unit and the pressure reducing unit. The ejector module which opens the decompression part earlier than the nozzle part when opening from a broken state.
前記ノズル部の入口および前記絞り部の入口は、前記旋回空間に開口しており、
前記絞り部の入口は、前記ノズル部の入口よりも中心軸の外周側に開口している請求項1に記載のエジェクタモジュール。 In the body portion, a swirling space (20a) for swirling the refrigerant around the central axis of the nozzle portion is formed;
The inlet of the nozzle portion and the inlet of the throttling portion are open to the swirling space,
The ejector module according to claim 1, wherein the inlet of the throttling portion is open to the outer peripheral side of the central axis than the inlet of the nozzle portion.
前記駆動機構部は、前記減圧側弁体部に連結されており、
前記ノズル側弁体部には、前記減圧側弁体部が変位する際に当接する当接部(22b)が形成されており、
前記ノズル側弁体部は、前記減圧側弁体部が前記当接部に当接している際に、前記減圧側弁体部と連動して変位する請求項1または2に記載のエジェクタモジュール。 The nozzle-side valve body portion includes an elastic member (22c) that applies a load to the side of the nozzle portion where the refrigerant passage area is reduced.
The drive mechanism unit is connected to the pressure reducing side valve body unit,
The nozzle-side valve body portion is formed with an abutting portion (22b) which is abutted when the pressure-reducing side valve body portion is displaced,
The ejector module according to claim 1 or 2, wherein the nozzle-side valve body portion is displaced in conjunction with the pressure-reducing side valve body portion when the pressure-reducing side valve body portion is in contact with the contact portion.
前記ノズル部および前記減圧部へ冷媒を流入させる高圧入口(21a)には、前記放熱器の出口側が接続され、
前記冷媒吸引口には、前記第1蒸発器の冷媒出口側が接続され、
前記昇圧部から冷媒を流出させるエジェクタ側出口(21c)には、前記第2蒸発器の冷媒入口側が接続され、
前記減圧部から冷媒を流出させる絞り側出口(21d)には、前記第1蒸発器の冷媒入口側が接続されている請求項1ないし3のいずれか1つに記載のエジェクタモジュール。 The ejector-type refrigeration cycle (10) includes a compressor (11) that compresses and discharges a refrigerant, a radiator (12) that dissipates the refrigerant discharged from the compressor, and a first evaporator (17) that evaporates the refrigerant. And a second evaporator (18) for evaporating the refrigerant to flow out to the suction side of the compressor,
The outlet side of the radiator is connected to a high pressure inlet (21a) which causes the refrigerant to flow into the nozzle portion and the pressure reducing portion,
The refrigerant outlet side of the first evaporator is connected to the refrigerant suction port,
The refrigerant inlet side of the second evaporator is connected to the ejector side outlet (21c) which causes the refrigerant to flow out from the pressure rising portion,
The ejector module according to any one of claims 1 to 3, wherein a refrigerant inlet side of the first evaporator is connected to a throttle side outlet (21d) which causes the refrigerant to flow out from the pressure reducing portion.
前記圧縮機から吐出された冷媒を放熱させる放熱器(12)と、
前記放熱器から流出した冷媒の流れを分岐する分岐部(14)と、
前記分岐部にて分岐された一方の冷媒を減圧させる可変ノズル部から噴射される噴射冷媒の吸引作用によって冷媒吸引口(21b)から冷媒を吸引し、前記噴射冷媒と前記冷媒吸引口から吸引された吸引冷媒との混合冷媒を昇圧させるエジェクタ(15)と、
前記分岐部にて分岐された他方の冷媒を減圧させる可変絞り機構(16)と、
前記可変絞り機構にて減圧された冷媒を蒸発させて前記冷媒吸引口側へ流出させる第1蒸発器(17)と、
前記エジェクタから流出した冷媒を蒸発させて前記圧縮機の吸入側へ流出させる第2蒸発器(18)と、
前記可変ノズル部の通路断面積を制御するエジェクタ制御部(40b)と、
予め定めたエジェクタ停止条件が成立したことを判定する停止条件判定部(S1)と、
前記第1蒸発器の複数の部位の温度を検出する蒸発器温度検出部(47)と、を備え、
前記エジェクタ制御部は、前記停止条件判定部によって前記エジェクタ停止条件が成立したと判定された際に、前記可変ノズル部を閉塞させるものであり、
前記停止条件判定部は、前記蒸発器温度検出部が検出した最高温度から最低温度を減算した温度差(ΔT)が予め定めた基準温度差(KΔT)以上となった際に、前記エジェクタ停止条件が成立したと判定するものであるエジェクタ式冷凍サイクル。 A compressor (11) that compresses and discharges a refrigerant;
A radiator (12) for radiating the refrigerant discharged from the compressor;
A branch portion (14) for branching the flow of the refrigerant flowing out of the radiator;
The refrigerant is sucked from the refrigerant suction port (21b) by the suction action of the jetted refrigerant injected from the variable nozzle portion which decompresses one of the refrigerants branched in the branch portion, and is sucked from the jetted refrigerant and the refrigerant suction port An ejector (15) for boosting the pressure of the mixed refrigerant with the suctioned refrigerant;
A variable throttling mechanism (16) for reducing the pressure of the other refrigerant branched at the branch portion;
A first evaporator (17) for evaporating the refrigerant decompressed by the variable throttle mechanism and flowing it out to the refrigerant suction port side;
A second evaporator (18) for evaporating the refrigerant flowing out of the ejector and flowing it out to the suction side of the compressor;
An ejector control unit (40b) that controls a passage cross-sectional area of the variable nozzle unit;
A stop condition determination unit (S1) that determines that a predetermined ejector stop condition is satisfied ;
An evaporator temperature detection unit (47) for detecting temperatures of a plurality of parts of the first evaporator ;
The ejector controller, when the ejector stop condition by the stop condition determination unit is determined to be satisfied state, and are not to close the variable nozzle part,
The stop condition determination unit is configured to stop the ejector when the temperature difference (ΔT) obtained by subtracting the lowest temperature from the highest temperature detected by the evaporator temperature detection unit becomes equal to or more than a predetermined reference temperature difference (KΔT). An ejector-type refrigeration cycle that is determined to be established .
前記圧縮機から吐出された冷媒を放熱させる放熱器(12)と、
前記放熱器から流出した冷媒の流れを分岐する分岐部(14)と、
前記分岐部にて分岐された一方の冷媒を減圧させる可変ノズル部から噴射される噴射冷媒の吸引作用によって冷媒吸引口(21b)から冷媒を吸引し、前記噴射冷媒と前記冷媒吸引口から吸引された吸引冷媒との混合冷媒を昇圧させるエジェクタ(15)と、
前記分岐部にて分岐された他方の冷媒を減圧させる可変絞り機構(16)と、
前記可変絞り機構にて減圧された冷媒を蒸発させて前記冷媒吸引口側へ流出させる第1蒸発器(17)と、
前記エジェクタから流出した冷媒を蒸発させて前記圧縮機の吸入側へ流出させる第2蒸発器(18)と、
前記可変ノズル部の通路断面積を制御するエジェクタ制御部(40b)と、
予め定めたエジェクタ停止条件が成立したことを判定する停止条件判定部(S1)と、を備え、
前記エジェクタ制御部は、前記停止条件判定部によって前記エジェクタ停止条件が成立したと判定された際に、前記可変ノズル部を閉塞させるものであり、
前記停止条件判定部は、前記圧縮機が起動してから予め定めた基準時間が経過する迄は、前記エジェクタ停止条件が成立したと判定するものであるエジェクタ式冷凍サイクル。 A compressor (11) that compresses and discharges a refrigerant;
A radiator (12) for radiating the refrigerant discharged from the compressor;
A branch portion (14) for branching the flow of the refrigerant flowing out of the radiator;
The refrigerant is sucked from the refrigerant suction port (21b) by the suction action of the jetted refrigerant injected from the variable nozzle portion which decompresses one of the refrigerants branched in the branch portion, and is sucked from the jetted refrigerant and the refrigerant suction port An ejector (15) for boosting the pressure of the mixed refrigerant with the suctioned refrigerant;
A variable throttling mechanism (16) for reducing the pressure of the other refrigerant branched at the branch portion;
A first evaporator (17) for evaporating the refrigerant decompressed by the variable throttle mechanism and flowing it out to the refrigerant suction port side;
A second evaporator (18) for evaporating the refrigerant flowing out of the ejector and flowing it out to the suction side of the compressor;
An ejector control unit (40b) that controls a passage cross-sectional area of the variable nozzle unit;
And a stop condition determination unit (S1) that determines that a predetermined ejector stop condition is satisfied,
The ejector controller, when the ejector stop condition by the stop condition determination unit is determined to be satisfied state, and are not to close the variable nozzle part,
The ejector type refrigeration cycle, wherein the stop condition determination unit determines that the ejector stop condition is satisfied until a predetermined reference time elapses after the compressor is started .
前記圧縮機から吐出された冷媒を放熱させる放熱器(12)と、
前記放熱器から流出した冷媒の流れを分岐する分岐部(14)と、
前記分岐部にて分岐された一方の冷媒を減圧させる可変ノズル部から噴射される噴射冷媒の吸引作用によって冷媒吸引口(21b)から冷媒を吸引し、前記噴射冷媒と前記冷媒吸引口から吸引された吸引冷媒との混合冷媒を昇圧させるエジェクタ(15)と、
前記分岐部にて分岐された他方の冷媒を減圧させる可変絞り機構(16)と、
前記可変絞り機構にて減圧された冷媒を蒸発させて前記冷媒吸引口側へ流出させる第1蒸発器(17)と、
前記エジェクタから流出した冷媒を蒸発させて前記圧縮機の吸入側へ流出させる第2蒸発器(18)と、
前記可変ノズル部の通路断面積を制御するエジェクタ制御部(40b)と、
予め定めたエジェクタ停止条件が成立したことを判定する停止条件判定部(S1)と、を備え、
前記エジェクタ制御部は、前記停止条件判定部によって前記エジェクタ停止条件が成立したと判定された際に、前記可変ノズル部を閉塞させるものであり、
前記停止条件判定部は、前記圧縮機の冷媒吐出能力が予め定めた基準吐出能力以下となっている際は、前記エジェクタ停止条件が成立したと判定するものであるエジェクタ式冷凍サイクル。 A compressor (11) that compresses and discharges a refrigerant;
A radiator (12) for radiating the refrigerant discharged from the compressor;
A branch portion (14) for branching the flow of the refrigerant flowing out of the radiator;
The refrigerant is sucked from the refrigerant suction port (21b) by the suction action of the jetted refrigerant injected from the variable nozzle portion which decompresses one of the refrigerants branched in the branch portion, and is sucked from the jetted refrigerant and the refrigerant suction port An ejector (15) for boosting the pressure of the mixed refrigerant with the suctioned refrigerant;
A variable throttling mechanism (16) for reducing the pressure of the other refrigerant branched at the branch portion;
A first evaporator (17) for evaporating the refrigerant decompressed by the variable throttle mechanism and flowing it out to the refrigerant suction port side;
A second evaporator (18) for evaporating the refrigerant flowing out of the ejector and flowing it out to the suction side of the compressor;
An ejector control unit (40b) that controls a passage cross-sectional area of the variable nozzle unit;
And a stop condition determination unit (S1) that determines that a predetermined ejector stop condition is satisfied,
The ejector controller, when the ejector stop condition by the stop condition determination unit is determined to be satisfied state, and are not to close the variable nozzle part,
The ejector type refrigeration cycle in which the stop condition determination unit determines that the ejector stop condition is satisfied when the refrigerant discharge capacity of the compressor is equal to or less than a predetermined reference discharge capacity .
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017039254A JP6776947B2 (en) | 2017-03-02 | 2017-03-02 | Ejector module and ejector refrigeration cycle |
PCT/JP2018/005441 WO2018159322A1 (en) | 2017-03-02 | 2018-02-16 | Ejector module and ejector-type refrigeration cycle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017039254A JP6776947B2 (en) | 2017-03-02 | 2017-03-02 | Ejector module and ejector refrigeration cycle |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2018145823A JP2018145823A (en) | 2018-09-20 |
JP2018145823A5 true JP2018145823A5 (en) | 2019-05-23 |
JP6776947B2 JP6776947B2 (en) | 2020-10-28 |
Family
ID=63370861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017039254A Active JP6776947B2 (en) | 2017-03-02 | 2017-03-02 | Ejector module and ejector refrigeration cycle |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP6776947B2 (en) |
WO (1) | WO2018159322A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6780590B2 (en) | 2017-03-02 | 2020-11-04 | 株式会社デンソー | Ejector module |
CN111692703B (en) | 2019-03-15 | 2023-04-25 | 开利公司 | Fault detection method for air conditioning system |
DE102021213208A1 (en) | 2021-11-24 | 2023-05-25 | Volkswagen Aktiengesellschaft | Air conditioning arrangement with controlled ejector |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2834016B1 (en) * | 2001-12-21 | 2004-03-26 | Marwal Systems | JET PUMP |
JP4572910B2 (en) * | 2007-06-11 | 2010-11-04 | 株式会社デンソー | Two-stage decompression type ejector and ejector type refrigeration cycle |
JP2010019133A (en) * | 2008-07-09 | 2010-01-28 | Denso Corp | Ejector and heat pump cycle device |
-
2017
- 2017-03-02 JP JP2017039254A patent/JP6776947B2/en active Active
-
2018
- 2018-02-16 WO PCT/JP2018/005441 patent/WO2018159322A1/en active Application Filing
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100884804B1 (en) | Refrigerant cycle device | |
CN107850224B (en) | Pile-up valve | |
US6857286B2 (en) | Vapor-compression refrigerant cycle system | |
JP5967022B2 (en) | Refrigeration cycle equipment | |
JP6547781B2 (en) | Refrigeration cycle device | |
US6966199B2 (en) | Ejector with throttle controllable nozzle and ejector cycle using the same | |
JP6011507B2 (en) | Refrigeration cycle equipment | |
JP4254217B2 (en) | Ejector cycle | |
US6945074B2 (en) | Vapor-compression refrigerant cycle system | |
JP2018145823A5 (en) | ||
JP4042637B2 (en) | Ejector cycle | |
CN105579788A (en) | Ejector-type refrigeration cycle | |
JP6102552B2 (en) | Refrigeration cycle equipment | |
US7475557B2 (en) | Refrigerator | |
JP2018185066A5 (en) | ||
KR100555944B1 (en) | Vapor compression refrigerant cycle system | |
JP2003097868A (en) | Ejector cycle | |
JP6776947B2 (en) | Ejector module and ejector refrigeration cycle | |
JP4259092B2 (en) | Ejector cycle, air conditioner, and vehicle air conditioner | |
CN110168295B (en) | Flow path switching device, refrigeration cycle circuit and refrigerator | |
WO2017217142A1 (en) | Refrigeration cycle device | |
JP5012706B2 (en) | Heat pump cycle | |
JP2012052736A (en) | Hot water supply system and method of controlling heat pump device | |
JP2019190794A5 (en) | ||
JP6720932B2 (en) | Ejector type refrigeration cycle |