SU881472A1

SU881472A1 - Refrigeration unit

Info

Publication number: SU881472A1
Application number: SU802878028A
Authority: SU
Inventors: Юрий Васильевич Захаров; Александр Афанасьевич Лехмус; Николай Иванович Радченко
Original assignee: Николаевский Ордена Трудового Красного Знамени Кораблестроительный Институт Им.Адмирала С.О.Макарова
Priority date: 1980-02-05
Filing date: 1980-02-05
Publication date: 1981-11-15

Description

(54; ХОЛОДИЛЬНАЯ УСТАНОВКА(54; REFRIGERATING INSTALLATION

1one

Изобретение относитс к холодильной технике, а точнее к холодильным устройствам, снабженным испарителем с внутритрубным кипением хлад- . агента.The invention relates to refrigeration, and more specifically to refrigeration devices equipped with an evaporator with in-tube boiling refrigerant. agent.

Известны холодильные установки, содержащие циркул ционный контур, в котором последовательно установлены винтовой компрессор с промежуточной полостью сжати , конденсатор , два последовательно установленных эжектора, испаритель с внутритрубным кипением хладагента и отделитель жидкости, причем приемна камера первого эжектора подключена к промежуточной полос-15 ти сжати винтового компрессора, а приемна камера второго эжектора подсоединена к отделителю жидкости I J.Refrigeration units are known that contain a circulation circuit in which a screw compressor with an intermediate compression cavity, a condenser, two successively installed ejector, an evaporator with in-line boiling of the refrigerant and a liquid separator are installed in series, and the receiving chamber of the first ejector is connected to an intermediate compression band of 15 compressor, and the receiving chamber of the second ejector is connected to a liquid separator I J.

Недостатком известных установок вл етс их мала экономичность, 20 св занна с высокой температурой жидкого хладагента, поступающего в первый эжектор.A disadvantage of the known installations is their low efficiency, 20 associated with the high temperature of the liquid refrigerant entering the first ejector.

Цель изобретени - повышение экономичности.The purpose of the invention is to increase efficiency.

Указанна цель достигаетс тем, что в Циркул ционный контур между конденсатором и первым эжектором вк.шочен переохладйтель, охлаждающа полость которого на входе, после кон 30This goal is achieved by the fact that in the Circulation Circuit between the condenser and the first ejector a supercooler is inserted, the cooling cavity of which is at the inlet after 30

денсатора, через дроссельный вентиль также подключена к контуру, а на выxojae - к линии св зи промежуточной полости сжати винтового компрессора с первым эжектором.sensor, through the throttle valve is also connected to the circuit, and at the outlet, to the communication line of the intermediate compression cavity of the screw compressor with the first ejector.

tfa чертеже схематически представлена предлагаема установка.The tfa drawing shows schematically the proposed installation.

Установка содержит винтовой комгпрессор 1, конденсатор 2, эжектор 3, эжектор 4, испаритель 5, отделитель 6 ЖИДКОСТИ, переохладитель 7, дроссельный вентиль 8, линию св зи 9 винтового компрессора 1 и эжектора 3.The installation contains a screw compressor 1, a condenser 2, an ejector 3, an ejector 4, an evaporator 5, a separator 6 LIQUIDS, a subcooler 7, a throttle valve 8, a communication line 9 of a screw compressor 1 and an ejector 3.

Установка работает следующим образом .The installation works as follows.

Claims

Refrigerant vapor is sucked off comg; the press 1 from the separator 6 is liquid and is injected into the condenser 2, in which it is turned into a liquid state. Most of the liquid refrigerant lowers its temperature in cooler 7 by cooling it with a part of the fluid that is throttled in the throttle valve 8 and boils in cooler 7 at intermediate pressure, and the resulting vapors are sucked in line 9 into the intermediate compression cavity of the screw compressor 1. Supercooled fluid flow from subcooler 7 enters the ejector 3 and then into the ejector .4, while in the ejector 3 the fluid flow sucks the intermediate pressure vapors from line 9, and in the ejector 4 it separates the separator ram liquid from separator b liquid. After the ejector 4, the vapor-liquid mixture enters the evaporator 5, in which it boils at low pressure, producing a cooling effect. The steam content boiling in the evaporator 5, the liquid-vapor mixture is chosen such as to ensure that the evaporator pipes 5 receive the maximum heat transfer coefficient, which simultaneously ensures the production of maximum cooling capacity by the installation. The economic efficiency of the invention is expressed in a decrease in the metal intensity of the evaporator and the entire installation as a whole due to the intensification of the heat transfer process in the evaporator. Claims: Refrigeration unit comprising a circulation loop in which a screw compressor with an intermediate compression cavity, a condenser, two successively installed ejector, an in-tube boil refrigerant and a liquid separator are installed in series, the first ejector receiving chamber is connected to the intermediate compression cavity of a screw compressor, and the receiving chamber of the second ejector is connected to a liquid separator, in order to increase efficiency, in The cooking circuit between the condenser and the first ejector is connected to a subcooler, whose cooling cavity at the inlet, after the condenser, is also connected to the contour through the throttle valve, and at the outlet to the communication line of the intermediate compression cavity of the screw compressor with the first ejector. Sources of information taken into account in the examination 1. USSR author's certificate in accordance with application 2878029, cl. F 25 B 1/06, 05.02.80.