CN201407176Y

CN201407176Y - Scroll refrigeration compressor for freezing

Info

Publication number: CN201407176Y
Application number: CN2009200248603U
Authority: CN
Inventors: 唐威力
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-12
Filing date: 2009-05-12
Publication date: 2010-02-17
Anticipated expiration: 2019-05-12

Abstract

The utility model discloses a scroll refrigeration compressor for freezing, which is used under freezing conditions and comprises a compressor shell, a fixed scroll and an orbiting scroll, wherein thefixed scroll and the orbiting scroll are arranged in the compressor shell. The utility model is characterized in that a built-in liquid spray cooling device is arranged; a round liquid inlet hole isarranged at the upper part of the external side of the fixed scroll close to the top of the fixed scroll; a small liquid spray hole A and a small liquid spray hole B are arranged perpendicularly to the internal end surface of the fixed scroll; and a steel interface board is arranged at the external port of the round liquid inlet hole of the fixed scroll, a metal adapter tube is welded at the center hole of the interface board, the metal nozzle is connected with a capillary assembly, the capillary assembly is connected with an liquid inlet pipe and the liquid inlet pipe is connected to the outside of the compressor shell. Since the liquid spray cooling device is arranged in the refrigeration compressor, the utility model has the advantages that the defects of the configuration outside the compressor are overcome, the volume of the scroll refrigeration compressor is small, the weight is light, the coefficient of capacity is high, the adiabatic efficiency is high and the manufacturing cost is low.

Description

The freezing swirl type cold compressor of using

(1) technical field

The utility model relates to a kind of freezing swirl type cold compressor of using that is applied to freezing operating mode.

(2) background technique

Refrigeration compressor is the core technology equipment in the refrigeration system, and its using scope, working life, manufacture cost directly influence service behaviour, manufacture cost and the user cost of refrigeration system.The swirl type cold compressor that grows up the eighties in 20th century belongs to refrigeration compressor of new generation.For refrigeration compressor is in when producing worst cold case in the safe working temperature scope, existing this type compressor takes to install additional the temperature control devices such as liquid injection valve of quantitative hydrojet reduction compressor operating temperature in machine outside casing.But such liquid-jet device complex structure needs with expensive liquid supply valve and temperature controlling device, thereby its manufacture cost is higher and take the machine external space, causes the job insecurity key element to increase because of former device increases simultaneously.

(3) summary of the invention

The utility model remedies the deficiencies in the prior art with the brand-new built-in hydrojet cooling device that is installed in the refrigeration compressor, and a kind of low cost of manufacture, refrigerating efficiency height, the freezing swirl type cold compressor of using of stable and reliable operation are provided.

The utility model is achieved by the following technical solution:

A kind of freezing swirl type cold compressor of using comprises casing and is positioned at its fixed scroll, moving scroll that its special way is: be provided with built-in hydrojet cooling device; Described built-in hydrojet cooling device: be provided with a tangential feed liquor circular hole that is parallel to the fixed scroll interior edge face near the Pan Ding place on fixed scroll outer side surface top; Perpendicular to the fixed scroll interior edge face 2 the hydrojet aperture A that are communicated with the feed liquor circular hole respectively, hydrojet aperture B are arranged; The feed liquor circular hole collar extension of fixed scroll has the steel interface board that is fastened on the fixed scroll, and the interface board center hole is welded with metal and takes over, and metal is taken over and connected capillary module, and capillary module connects liquid inlet pipe, and liquid inlet pipe is connected to outside the casing.

The freezing swirl type cold compressor of using of the present utility model, described hydrojet aperture B are near inwall place, vortex filament outer ring, and hydrojet aperture A is near the vortex filament second ring outer wall place (promptly be in two that are formed respectively by moving scroll and fixed scroll and press in the chamber); Its centre distance for when hydrojet aperture A in the chamber during hydrojet the passive scroll top end of hydrojet aperture B seal not hydrojet, hydrojet aperture B in the chamber during hydrojet the passive scroll top end of hydrojet aperture A seal not hydrojet.

The freezing swirl type cold compressor of using of the present utility model, its center, hole of feed liquor circular hole are 1/2 of fixed scroll dish top thickness degree, and feed liquor circular hole end face is between the fixed scroll vortex filament outer ring and second circle.

Bare bones of the present utility model is to utilize the hydrojet cool principle to settle the hydrojet cooling device in refrigeration compressor.This device can quantitatively spray into liquid refrigerant after cold according to compressor operating temperature height in refrigeration compressor, liquid refrigerant in spraying in the machine in the pressure chamber evaporates rapidly and has absorbed part heat in the machine, thereby reduced the refrigeration compressor operating temperature, it is remained in the reliable and stable operating temperature range.(＜126 ℃) spray into by continuous quantitatively (minute quantity) liquid refrigerant of this device and determine the position in the refrigeration compressor, through evaporative cooling, make refrigeration compressor stablize, work reliably, efficiently, thereby are applicable to the cooling condition of producing freezing low temperature fully.Packing into, this interior device volume of machine is little, in light weight, simple for structure, working stability is reliable, overcome and had configuration structure complexity outside machine, take that the machine external space is big, price is high, the outer liquid injection valve of machine of dangerous (easily break and malfunctioning) and many defectives of temperature controlling device thereof, kept that the swirl type cold compressor volume is little, in light weight simultaneously again, gas transmission coefficient height, adiabatic efficiency height, advantage of low manufacturing cost.The freezing swirl type cold compressor of using of a kind of ideal, safe, reliable, brand-new built-in hydrojet cooling device is provided for the refrigeration circle.

(4) description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the structural configuration schematic representation of the utility model in compressor;

Fig. 2 is the position view of feed liquor circular hole and hydrojet aperture A, hydrojet aperture B on the utility model fixed scroll;

Fig. 3 is that A-A shown in Figure 2 is to cross-sectional view;

Fig. 4 is the utility model fixed scroll structure schematic representation;

Fig. 5 is the utility model working principle, working state schematic representation.

Among the figure: 1, fixed scroll, 2, moving scroll, 3, casing, 4, liquid inlet pipe, 5, capillary module, 6, the hydrojet aperture, 6-1, hydrojet aperture A, 6-2, hydrojet aperture B, 7, bent axle, 8, motor stator, 9, rotor, 10, intakeport takes over, 11, the feed liquor circular hole, 12, metal is taken over, and 13, interface board.

(5) embodiment

Accompanying drawing is a kind of specific embodiment of the present utility model.This embodiment comprises casing 3 and is positioned at its fixed scroll 1, moving scroll 2, motor stator 8, rotor 9, moving scroll 2 is fixed on the bent axle 7, the bottom of casing 3 is provided with intakeport and takes over 10, fixed scroll 1 built-in capillary module formula hydrojet cooling device; Be provided with a tangential feed liquor circular hole 11 that is parallel to fixed scroll 1 interior edge face on fixed scroll 1 outer side surface top near the Pan Ding place; Perpendicular to fixed scroll 1 interior edge face 2 the hydrojet aperture A6-1 that are communicated with feed liquor circular hole 11 respectively, hydrojet aperture B6-2 are arranged; Feed liquor circular hole 11 collar extensions of fixed scroll 1 have the steel interface board 13 that is fastened on the fixed scroll 1, and interface board 13 center holes are welded with metal and take over 12, and metal is taken over 12 and connected capillary module 5, and capillary module 5 connects liquid inlet pipe 4, and liquid inlet pipe 4 is connected to outside the casing 3; Hydrojet aperture B6-2 is near inwall place, vortex filament outer ring, and hydrojet aperture A6-1 is near the vortex filament second ring outer wall place; Feed liquor circular hole 11 its centers, hole are 1/2 of fixed scroll 1 dish top thickness degree, and feed liquor circular hole 11 end faces are between the fixed scroll 1 vortex filament outer ring and second circle.

This hydrojet cooling device structure is as follows: in fixed scroll 1 outer side surface top (near the dish top end) tangential fixed scroll 1 an interior edge face diameter that is parallel to is arranged is the feed liquor circular hole 11 of Ф 4, its endface position is (promptly moving scroll moves to herein in the middle pressure chamber with fixed scroll formation) (accompanying drawing 2) in the middle of vortex filament outer ring and second circle; Between the fixed scroll 1 interior edge face vortex filament outer ring and second circle (on the Ф 4 hole end surface positions), there is the spray hole (hydrojet aperture A6-1, hydrojet aperture B6-2) of 2 Ф 0.75 to be communicated with (accompanying drawing 2) respectively with feed liquor circular hole 11 perpendicular to the fixed scroll interior edge face; Fixed scroll 1 outer side surface feed liquor circular hole 11 is outer to have a usefulness screw to be fastened on the fixed scroll and there is the steel interface board 13 in a Ф 4 holes at the center; Steel interface board 13 outer side surfaces are welded with the metal adapter 12 that the diameter that penetrates in Ф 4 holes, its center is 4mm; It is 2.25mm that the other end of metal adapter 12 is welded with an external diameter that inserts in it, and internal diameter is the copper capillary tube assembly 5 of the spiral fixed length of 0.75mm; The other end of capillary module 5 is solded in the liquid inlet pipe 4 that a diameter is 4mm; Liquid inlet pipe 4 is drawn and is taken over sidewall from intakeport from the compressor air suction mouth and passes, and liquid inlet pipe 4 is welded on intakeport and takes on the sidewall, and liquid inlet pipe 4 outer ends are connected the liquid refrigerant supply and take over; Each part joint (mouth) must be airtight, and any seepage must not be arranged (liquid refrigerant by intakeport time can further by cold excessively).

Helical copper capillary tube assembly 5, one terminations that external diameter, internal diameter, length are determined are gone in the metal liquid inlet pipe 4, and the other end inserts metal and takes in 12, and being fixed is placed in the space of fixed scroll 1 side top; The other end of copper connecting tube 12 is solded in the hole at steel interface board 13 centers, and interface board 13 usefulness screws are fastened on the fixed scroll 1 and the feed liquor circular hole 11 on its central aperture fixed scroll; The other end of liquid inlet pipe 4 is by the air-breathing oral pore on the compressor case, in casing, be drawn out to outside the casing and pass intakeport adapter sidewall and be drawn out to about 30mm outside the tube wall, this leans out liquid refrigerant behind part port and the refrigeration system high pressure end device for drying and filtering and goes out pipe and is connected, and (or this inlet side connection liquid refrigerant activity) liquid refrigerant from then on port enters.

Hydrojet aperture 6-1 on fixed scroll 1 interior edge face be positioned at the second vortex filament outer wall place and be communicated with feed liquor circular hole 11, hydrojet aperture 6-2 is positioned near the first vortex filament inwall place and be communicated with feed liquor circular hole 11, in the middle pressure chamber that this 2 hole is in when moving scroll 2 motions respectively and the position of fixed scroll 1 formation is inequality, this position is for having sealed suction port, do not communicate again and be in gas intermediateness by compression with relief opening, cavity pressure is less than exhaust pressure at this moment, and (also less than system's liquid refrigerant outlet place pressure) is higher than pressure of inspiration(Pi) again; In middle pressure chamber during pressure condition, liquid refrigerant has enough pressure reduction trace to spray into, and promptly can not appear at the low pressure area straying quatity and cause greatly and eject the compressor air inlet, can not appear at the zone of high pressure again and cause no pressure reduction or back-pressure difference to cause liquid can not spray into or be ejected to regurgitate; Motion along with moving scroll 2, when hydrojet aperture A6-1 hydrojet, then passive scroll 2 top closure of hydrojet aperture B6-2 are hydrojet not, and moving scroll 2 continues motion, when hydrojet aperture B6-2 hydrojet, then passive scroll 2 top closure of hydrojet aperture A6-1 are hydrojet not; In different 2, press in the chamber alternately hydrojet by 2 hydrojet apertures, realize continuously to hydrojet evaporative cooling in the compressor.

Be used for the capillary inner diameter of throttling, the selection of length, determined evaporating pressure, evaporating temperature and liquid refrigerant flow, its parameter capillaceous of the refrigeration compressor of different capacity and model is also inequality.

Claims

1. the freezing swirl type cold compressor of using comprises casing (3) and is positioned at its fixed scroll (1), moving scroll (2), it is characterized in that: be provided with built-in hydrojet cooling device; Described built-in hydrojet cooling device: be provided with a tangential feed liquor circular hole (11) that is parallel to fixed scroll (1) interior edge face near the Pan Ding place on fixed scroll (1) outer side surface top; Perpendicular to fixed scroll (1) interior edge face 2 the hydrojet aperture A (6-1) that are communicated with feed liquor circular hole (11) respectively, hydrojet aperture B (6-2) are arranged; Feed liquor circular hole (11) collar extension of fixed scroll (1) has the steel interface board (13) that is fastened on the fixed scroll (1), interface board (13) center hole is welded with metal and takes over (12), metal is taken over (12) and is connected capillary module (5), capillary module (5) connects liquid inlet pipe (4), and liquid inlet pipe (4) is connected to outside the casing (3).

2. the freezing swirl type cold compressor of using according to claim 1 is characterized in that: described hydrojet aperture B (6-2) is near inwall place, vortex filament outer ring, and hydrojet aperture A (6-1) is near the vortex filament second ring outer wall place.

3. the freezing swirl type cold compressor of using according to claim 1 and 2, it is characterized in that: its center, hole of feed liquor circular hole (11) is 1/2 of fixed scroll (a 1) dish top thickness degree, and feed liquor circular hole (11) endface position is positioned between fixed scroll (1) the vortex filament outer ring and second circle.