Ejector

A technology of ejector and diffuser, applied in the direction of ejector pump, subcooler, machine/engine, etc., can solve the problems of adjusting refrigerant flow, unstable operation of refrigeration cycle, difficulty in obtaining ejector, etc. Effect

CN105452676AInactive Publication Date: 2016-03-30DENSO CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-03-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

An ejector having formed therein a rotation space (221) that rotates a high-pressure coolant that has flowed in from a coolant inlet port (211) inside a body (200) and guides same to a depressurization space (222) that causes the rotating high-pressure coolant to depressurize and expand. A passage-forming member (240) that forms a nozzle passage (224) and a diffuser passage (232a) has a shape having an increasing cross-sectional area the further the passage extends away from the depressurization space (222). A temperature-sensing section (252) in a drive device (250) that displaces the passage-forming member (240) is housed inside the body (200) and the temperature-sensing section (252) and a diaphragm (251) are formed in an annular shape so as to encircle at least an axis (X) of the passage-forming member (240). As a result, size increase is suppressed and operation that matches the load of a refrigeration cycle can be achieved.
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Description

[0001] Cross-references to related related applications

[0002] This application is based on Japanese Patent Application No. 2013-160510 filed on August 1, 2013 and Japanese Patent Application No. 2013-258342 filed on December 13, 2013, and the content of the invention is incorporated into this application by reference. technical field

[0003] The present invention relates to an ejector which is a kinetic energy delivery pump that depressurizes a fluid and performs fluid delivery by suction of an operating fluid ejected at high speed. Background technique

[0004] As conventional injectors, for example, structures shown in Patent Documents 1 and 2 are known. This ejector is equipped with: a nozzle part that depressurizes the refrigerant that is compressed to a high pressure by the compressor and then condensed and liquefied by the refrigerant condenser when it is applied to a refrigeration cycle; The refrigerant on the low-pressure side that flows out; and the diffuser pa...

Examples

no. 1 Embodiment approach

[0052] In the first embodiment, an example in which the ejector 100 of the present disclosure is applied to the vapor compression refrigeration cycle 10 constituting the vehicle air conditioner will be described. Such as figure 1 As shown, the refrigeration cycle 10 of this embodiment includes: a compressor 11; a condenser 12; an ejector 100; and an evaporator 13, and these are connected by refrigerant piping.

[0053] The compressor 11 is a fluid machine that sucks in refrigerant, compresses the sucked refrigerant, and discharges it. The compressor 11 of the present embodiment is rotationally driven by a vehicle running engine via an electromagnetic clutch and a belt (not shown). The compressor 11 is constituted by, for example, a variable displacement compressor that changes the discharge displacement by inputting a control signal from a control device (not shown) to an electromagnetic displacement control valve. In addition, the compressor 11 may be constituted by an elec...

no. 2 Embodiment approach

[0168] Next, a second embodiment will be described. In this embodiment, an example in which part of the configuration of the drive device 250 described in the first embodiment is changed will be described. In addition, in this embodiment, the description of the same or equivalent parts as those of the first embodiment is omitted or the description is omitted.

[0169] In this embodiment, if Figure 11 , Figure 12 As shown, an annular notch is provided between the outer peripheral portion and the inner peripheral portion of the diaphragm 251 of the driving device 250, and the diaphragm 251 is divided into two. In addition, in the present embodiment, the diaphragm 251 is sandwiched between a pair of plate members 254b and 254c.

[0170] The respective plate members 254 b and 254 c are connected via a connection portion 254 d provided in the notch portion of the diaphragm 251 . The connecting portion 254d of the present embodiment is provided on the plate member 254b dispose...

no. 3 Embodiment approach

[0176] Next, a third embodiment will be described. In this embodiment, an example in which the configuration of the driving device 250 of the first embodiment is changed will be described. In addition, in this embodiment, the description of the same or equivalent parts as those of the first and second embodiments is omitted or simplified.

[0177] In this embodiment, if Figure 12 As shown, the driving device 250 is accommodated in the groove portion 220c formed in the main body portion 220a of the nozzle main body 220 defining the suction space 231a together with the diffuser main body 230 .

[0178] In addition, the driving device 250 of the present embodiment is entirely accommodated in the groove portion 220c of the nozzle body 220 so as not to interfere with the suction refrigerant flowing in the suction portion 231 .

[0179] Specifically, the driving device 250 is arranged as follows: the temperature sensing part 252 is positioned on the bottom side of the groove 220 ...