JPS61192265U

JPS61192265U -

Info

Publication number: JPS61192265U
Application number: JP7504685U
Authority: JP
Priority date: 1985-05-22
Filing date: 1985-05-22
Publication date: 1986-11-29

Description

[Brief explanation of drawings]

第１図は本考案の蒸気噴射式冷凍装置の回路図
、第２図はエジエクタ部分の略断面図、第３図は
従来の蒸気噴射式冷凍装置の回路図、第４図はエ
ジエクタノズル部分の流速と冷凍能力との関係を
示す線図、第５図はエジエクタ部分の断面図であ
る。１：冷媒、２：加熱器、３：熱交換チユーブ、
４：コンデンサ、５：蒸気出口、６：第一の接続
管、７：吸入口、８：エジエクタ、９：エバポレ
ータ、１０：第二の接続管、１１：第三の接続管
、１２：液状冷媒入口、１３：分岐管、１４：受
液器、１５：膨張弁、１６：送液ポンプ、１７：
ノズル、１８：喉部、１９：ニードル、２０：駆
動機構、２１：制御器、２２：流量センサ、２３
：圧力センサ、２４，２５：逆止弁、２６：膨張
手段。 Figure 1 is a circuit diagram of the steam injection refrigeration system of the present invention, Figure 2 is a schematic cross-sectional view of the ejector section, Figure 3 is a circuit diagram of a conventional steam injection refrigeration system, and Figure 4 is the flow velocity at the ejector nozzle. FIG. 5 is a diagram showing the relationship between the temperature and the refrigerating capacity, and FIG. 5 is a cross-sectional view of the ejector portion. 1: Refrigerant, 2: Heater, 3: Heat exchange tube,
4: Condenser, 5: Steam outlet, 6: First connecting pipe, 7: Suction port, 8: Ejector, 9: Evaporator, 10: Second connecting pipe, 11: Third connecting pipe, 12: Liquid refrigerant Inlet, 13: Branch pipe, 14: Liquid receiver, 15: Expansion valve, 16: Liquid pump, 17:
Nozzle, 18: Throat, 19: Needle, 20: Drive mechanism, 21: Controller, 22: Flow rate sensor, 23
: Pressure sensor, 24, 25: Check valve, 26: Expansion means.

Claims

[Scope of utility model registration request]

The refrigerant is heated and evaporated using engine heat,
a heater that produces high-pressure steam; a condenser that condenses and liquefies refrigerant vapor; a first connecting pipe that has one end connected to the steam outlet of the heater and the other end connected to the steam inlet of the condenser; One end is connected to the ejector, which is installed in the middle of one connecting pipe and spouts the steam sent from the heater toward the condenser, and sucks the fluid from the suction port installed on the side, and the outlet of the liquid refrigerant of the condenser. a second connecting pipe whose other end was connected to the inlet side of the evaporator for evaporating this liquid refrigerant, and a third connecting pipe whose one end was connected to the outlet side of this evaporator and the other end was connected to the suction port of the ejector. In a steam injection type refrigeration system comprising a connecting pipe and a branch pipe branching from the middle of the second connecting pipe and leading to the liquid refrigerant inlet of the heater, a pipe is provided inside the nozzle of the ejector at the tip thereof. A needle that becomes thinner toward the nozzle is provided concentrically with the nozzle and movable in the central axis direction, and a drive mechanism that moves this needle and a controller that controls the movement of this drive mechanism are provided. sending a signal to the drive mechanism based on at least one of the flow rate of high-pressure steam sent from the vessel to the nozzle of the ejector and the pressure of the refrigerant sent to the evaporator;
This drive mechanism moves the needle inside the nozzle based on this signal, adjusts the area of the throttle channel for steam formed between the inner circumferential surface of the nozzle and the outer circumferential surface of the needle, and the steam is ejected from the throttle channel. A steam injection type refrigeration device characterized in that the flow velocity of steam is at or near the sonic velocity.