CN211552137U

CN211552137U - Self-cleaning mechanism of ultra-low temperature refrigerator

Info

Publication number: CN211552137U
Application number: CN201922336997.9U
Authority: CN
Inventors: 羊亚平
Original assignee: Jiangsu Connecticut Biological Technology Co ltd
Current assignee: Jiangsu Connecticut Biological Technology Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-09-22
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses a self-cleaning mechanism of an ultra-low temperature refrigerator, belonging to the technical field of refrigeration equipment, comprising a capillary tube, wherein the front end and the rear end of the capillary tube are both provided with electromagnetic valves, a flushing branch is connected in parallel on the capillary tube, and a flushing pump is arranged in the flushing branch; the flushing branch is respectively led out through the tee joints at the front end and the rear end of the capillary tube; a filter screen is arranged in the cleaning branch. The utility model discloses a parallelly connected washing branch road in the capillary both ends of ultra-low temperature refrigerator to set up the washer pump, when the capillary takes place to block up, start the washer pump, utilize the refrigerant in the capillary self-loopa after the pressurization, reached abluent purpose, need not to open the capillary that blocks up, alleviateed maintenance work volume greatly. The cleaning branch is provided with a filter screen, so that the cleaning branch can be kept in a good state.

Description

Self-cleaning mechanism of ultra-low temperature refrigerator

Technical Field

The utility model relates to a refrigeration plant technical field specifically is a self-cleaning mechanism of ultra-low temperature refrigerator.

Background

The ultra-low temperature refrigerator is an apparatus for storing and preserving biological samples or medicines at low temperature, and has wide application in the fields of biological research, clinical treatment, medicine, industry and the like. The ultra-low temperature refrigerator has the characteristics of large capacity, simple operation, independent temperature controller, monitoring alarm system and the like. The method is widely applied to units such as hospitals, blood stations, bioengineering, epidemic prevention systems, laboratories and the like.

Ultra-low temperature refrigerators generally employ single stage compression or two stage cascade technology. In the refrigerating system of ultra-low temperature refrigerator, the refrigeration pipeline is generally longer, and the pipe diameter is great, and throttle capillary pipe diameter is thinner, and lubricating oil is very easily condensed at the capillary import department under this operational environment, and impurity and moisture content that exist in the pipeline in addition mix together and probably block up the capillary, lead to ultra-low temperature refrigerator after working a period, the fault machine halt or refrigeration performance variation.

The problem of clogging of capillaries is generally solved by the following methods: before welding the pipeline, cleaning the pipeline to remove impurities possibly remaining in the pipeline; the freezing oil mass that the minimize got into low temperature pipeline and optimization set up the pipeline trend etc. and in case take place the capillary blocking, only open the pipeline and handle, passive solution strategy had both influenced the customer and used like this, led to cost of maintenance to increase by a wide margin again, wasted time and energy, was unfavorable for refrigerating system's maintenance and normal work.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

To prior art not enough, the utility model discloses a parallelly connected washing branch road on refrigerating system's capillary way to set up the washer pump in washing the branch road, take place to block up the back when capillary way, reach the purpose of wasing the capillary for the refrigerant pressurization self-loopa in the capillary through the washer pump.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a self-cleaning mechanism of an ultra-low temperature refrigerator comprises a capillary tube, wherein electromagnetic valves are arranged at the front end and the rear end of the capillary tube, a flushing branch is connected on the capillary tube in parallel, and a flushing pump is arranged in the flushing branch;

preferably, the flushing branch is respectively led out through three-way joints at the front end and the rear end of the capillary tube;

preferably, a filter screen is arranged in the flushing branch.

(III) advantageous effects

The utility model discloses a parallelly connected washing branch road in the capillary both ends of ultra-low temperature refrigerator to set up the washer pump, when the capillary takes place to block up, start the washer pump, utilize the refrigerant in the capillary self-loopa after the pressurization, reached abluent purpose, need not to open the capillary that blocks up, alleviateed maintenance work volume greatly.

The cleaning branch is provided with a filter screen, so that the cleaning branch can be kept in a good state.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the washing branch of the present invention with a filter net;

in the figure: 1-filter, 2-capillary front electromagnetic valve, 3-capillary front tee, 4-capillary, 5-capillary rear electromagnetic valve, 6-capillary rear tee, 7-heater, 8-flushing pump and 9-filter screen.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a self-cleaning mechanism of ultra-low temperature refrigerator, includes capillary 4, capillary 4 is usually between refrigerating system's filter 1 and heater 7, before capillary solenoid valve 2 and capillary back solenoid valve 5 are set up respectively to the front end and the rear end of capillary 4 to set up tee bend 3 before capillary 3 and behind capillary between solenoid valve 2 and capillary back solenoid valve 5 and capillary respectively and tee bend 6 behind capillary, through tee bend 3 before capillary and tee bend 6 behind capillary in parallel connection wash the branch road in capillary 4 both ends, wash and be provided with flush pump 8 in the branch road.

A filter screen 9 can be arranged in the flushing branch to clean impurities accumulated on the filter screen.

When the capillary tube is blocked, the front electromagnetic valve 2 of the capillary tube and the rear electromagnetic valve 5 of the capillary tube are closed, the flushing pump 8 is started, the refrigerant in the capillary tube is pressurized and then circulates automatically, the cleaning purpose is achieved, and the blocked capillary tube does not need to be opened. After washing, the filter net 9 is taken out for cleaning.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A self-cleaning mechanism of an ultra-low temperature refrigerator comprises a capillary tube and is characterized in that electromagnetic valves are arranged at the front end and the rear end of the capillary tube, a flushing branch is connected on the capillary tube in parallel, and a flushing pump is arranged in the flushing branch;

a filter screen is arranged in the flushing branch.

2. The self-cleaning mechanism for the ultra-low temperature refrigerator according to claim 1, wherein the flushing branches are respectively led out through three-way joints at the front end and the rear end of the capillary tube.