CN209027131U - A kind of dedicated refrigeration unit of freezer - Google Patents

Abstract

The utility model relates to a kind of dedicated refrigeration units of freezer, including compressor, the outlet of compressor is connect with oil eliminator, oil eliminator is connect with condenser inlet, the outlet of condenser is connect with high pressure liquid storage bottle, high pressure liquid storage bottle is connect by device for drying and filtering and expansion valve with evaporator, the outlet of evaporator is connected with gas-liquid separator, the outlet end of gas-liquid separator is connected with low pressure receiver bottle, outlet side is connected to heat exchanger, the secondary entrance of heat exchanger and secondary outlet are connect with cooling water circulating pipe, pressurized liquid injection pipeline is connected between low pressure receiver bottle and high pressure liquid storage bottle, pressurized liquid injection pipeline is equipped with force (forcing) pump.The utility model accelerates refrigerating speed by the way that the air of freezer other positions to be sent into inside evaporator by blower；The cold air come out in evaporator is used for cooling water, improves the conversion ratio of resource；Refrigerant in low pressure receiver bottle is injected into high pressure liquid storage bottle, reduces the consumption of refrigerant, reduces the expense of plant maintenance operation.

Description

A kind of dedicated refrigeration unit of freezer

Technical field

The utility model relates to technical field of refrigeration equipment more particularly to a kind of dedicated refrigeration units of freezer.

Background technique

Refrigeration equipment is vital equipment in freezer, and facility of the freezer as a large amount of storage cargos, area is larger, At runtime, the position refrigeration effect close to evaporator is preferable for refrigeration equipment, and the temperature adjusting in freezer is generally followed by air Ring or natural diffuseness, cause in freezer that the temperature difference is big everywhere, and temperature adjusts unbalanced, and adjustment speed is slow.

Existing refrigeration equipment energy consumption is larger, energy conversion rate is low and plant maintenance operation it is costly, made to user At certain financial burden, needs to further decrease energy consumption or improve energy conversion rate.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of freezer that good refrigeration effect energy conversion rate is high is special Use refrigeration unit.

In order to solve the above technical problems, the technical solution of the utility model is: a kind of dedicated refrigeration unit of freezer, including pressure Contracting machine, oil eliminator, condenser, high pressure liquid storage bottle and evaporator, the outlet of the compressor are connect with oil eliminator, the oil Separator is connect with condenser inlet, and the outlet of the condenser is connect with high pressure liquid storage bottle, and the high pressure liquid storage bottle goes out liquid Mouth is connected by the entrance of device for drying and filtering and expansion valve and evaporator, and the outlet of the evaporator is connected with gas-liquid separator, The outlet end of the gas-liquid separator is connected with low pressure receiver bottle, and outlet side is connected to an entrance of heat exchanger, the heat exchange The primary outlet of device is connect with the air entry of the compressor, and the secondary entrance of the heat exchanger and secondary outlet are followed with cooling water The connection of endless tube road, connects pressurized liquid injection pipe between the liquid outlet of the low pressure receiver bottle and the inlet of the high pressure liquid storage bottle Road, the pressurized liquid injection pipeline are equipped with force (forcing) pump.

The evaporator includes shell as a preferred technical solution, and two groups of steam-generating banks are equipped in the shell, described Two groups of steam-generating banks are arranged in parallel, and shell is equipped with the air inlet being connected to respectively with the entrance and exit of two groups of steam-generating banks And gas outlet, the air inlet are connect with the expansion valve, the gas outlet is connect with the gas-liquid separator.

The enclosure interior is additionally provided with two groups of " u "-shaped support tubes being set side by side, two groups of steamings as a preferred technical solution, Disk is located on the " u "-shaped support tube respectively for hair tube bank, and the opening of two groups of " u "-shaped support tubes is disposed opposite to each other, the " u "-shaped Support tube includes air inlet mouth of pipe and outlet mouth of pipe, and the air inlet mouth of pipe and outlet mouth of pipe are connect with air inlet duct and exhaust passage respectively； The outer tube wall of the air inlet mouth of pipe and outlet mouth of pipe is equipped with several ring fins, and the steam-generating bank includes several annulars Evaporation tube, the annular evaporation tube are looped around on the outside of the air inlet mouth of pipe and outlet mouth of pipe, and between two neighboring ring fin One annular evaporation tube is installed, is respectively equipped with entrance and exit, the " u "-shaped branch above and below the annular evaporation tube The isocon and collecting pipe being connected to the entrance and exit of the annular evaporation tube are respectively equipped with above and below stay tube, it is described Isocon and collecting pipe are connected with the air inlet and air outlet of corresponding steam-generating bank respectively.

As a preferred technical solution, the enclosure interior be additionally provided with by two groups of " u "-shaped support tubes separate every Plate, the two sides of the " u "-shaped support tube are equipped with the hold-down support being fixedly mounted on the case inside and the partition.

Tube bank is additionally provided between the air inlet mouth of pipe and outlet mouth of pipe of the " u "-shaped support tube as a preferred technical solution, Support base, the tube bundle support seat include two and are oppositely arranged and the support platform in conjunction with the annular evaporation tube, and described two Several cooling fins are equipped between a support platform, the both ends of the cooling fin extend out to and the air inlet mouth of pipe and outlet The tube wall of nozzle combines.

The support platform is equipped with several slots for being used to accommodate the annular evaporation tube as a preferred technical solution, Body.

The annular evaporation tube includes two bend pipes in conjunction with the " u "-shaped support tube as a preferred technical solution, And the straight tube between described two bend pipes is set, the junction between the bend pipe and straight tube is equipped with sealing element.

It is connect on the pressurized liquid injection pipeline and with the liquid outlet of the high pressure liquid storage bottle as a preferred technical solution, Pipeline on be mounted on solenoid valve.

By adopting the above-described technical solution, the beneficial effects of the utility model are: the utility model passes through in evaporator The air inlet mouth of pipe and outlet mouth of pipe of " u "-shaped support tube and the air inlet duct of blower and exhaust passage connection, by the sky of freezer other positions Gas is sent into inside evaporator by blower, is accelerated air circulation, is accelerated refrigerating speed；Pass through going out for heat exchanger and evaporator Mouth connection, is used for cooling water for the cold air come out in evaporator, improves the conversion ratio of resource；Low pressure receiver bottle passes through force (forcing) pump It is connect with high pressure liquid storage bottle, the refrigerant in low pressure receiver bottle is injected into high pressure liquid storage bottle, the consumption of refrigerant is reduced, subtracts The expense for having lacked plant maintenance operation, alleviates the financial burden of user.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, is also possible to obtain other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of the utility model embodiment；

Fig. 2 is the structural schematic diagram of evaporator in Fig. 1；

Fig. 3 is the structural schematic diagram of annular evaporation tube in Fig. 2；

In figure: 1- compressor；2- oil eliminator；3- condenser；41- high pressure liquid storage bottle；42- low pressure receiver bottle；5- evaporation Device；6- device for drying and filtering；7- expansion valve；8- gas-liquid separator；9- heat exchanger；11- cools down water circulating pipe；12- pressurized liquid injection Pipeline；13- force (forcing) pump；14- solenoid valve；15- air inlet duct；The exhaust passage 16-；51- shell；52- steam-generating bank；The evaporation of 521- annular Pipe；521a- bend pipe；521b- straight tube；521c- sealing element；522- isocon；523- collecting pipe；53- " u "-shaped support tube；531- Air inlet mouth of pipe；532- outlet mouth of pipe；533- ring fin；54- partition；55- hold-down support；56- tube bundle support seat；561- support Platform；562- cooling fin.

Specific embodiment

As Fig. 1 to Fig. 3 jointly shown in, a kind of dedicated refrigeration unit of freezer, including compressor 1, oil eliminator 2, condenser 3, the outlet of high pressure liquid storage bottle 41 and evaporator 5, compressor 1 is connect with oil eliminator 2, and oil eliminator 2 and 3 entrance of condenser connect It connects, the outlet of condenser 3 is connect with high pressure liquid storage bottle 4, and the liquid outlet of high pressure liquid storage bottle 41 passes through device for drying and filtering 6 and expansion valve 7 connect with the entrance of evaporator 5, and the outlet of evaporator 5 is connected with gas-liquid separator 8, and the outlet end of gas-liquid separator 8 is connected with Low pressure receiver bottle 42, outlet side are connected to an entrance of heat exchanger 9, the air entry of the primary outlet and compressor 1 of heat exchanger 9 Connection, the secondary entrance of heat exchanger 9 and secondary outlet are connect with cooling water circulating pipe 11, the liquid outlet of low pressure receiver bottle 42 and Pressurized liquid injection pipeline 12 (see dotted line in Fig. 1) is connected between the inlet of high pressure liquid storage bottle 41, pressurized liquid injection pipeline 12 is equipped with Force (forcing) pump 13.

In the present embodiment, compressor 1 is at least two parallel connections, wherein an operation, another spare.

To pacify on the pipeline that convenient for control, connect on pressurized liquid injection pipeline 12 and with the liquid outlet of high pressure liquid storage bottle 41 Equipped with solenoid valve 14.

Evaporator 5 includes shell 51, is equipped with two groups of steam-generating banks 52 in shell 51, and two groups of steam-generating banks 52 are arranged in parallel, Shell is equipped with the air inlet and air outlet being connected to respectively with the entrance and exit of two groups of steam-generating banks 52, air inlet and expansion valve 7 connections, gas outlet is connect with the gas-liquid separator 8.

Two groups of " u "-shaped support tubes 53 being set side by side are additionally provided with inside shell 51, disk is located at respectively for two groups of steam-generating banks 52 On " u "-shaped support tube 53, the opening of two groups of " u "-shaped support tubes 53 is disposed opposite to each other, and " u "-shaped support tube includes 531 He of air inlet mouth of pipe Outlet mouth of pipe 532, air inlet mouth of pipe 531 and outlet mouth of pipe 532 are connect with air inlet duct 15 and exhaust passage 16 respectively.Two " u "-shaped branch Stay tube 53 is separately connected a blower, is respectively used to for the air of different location in freezer being blown into evaporator 5.

The outer tube wall of air inlet mouth of pipe 531 and outlet mouth of pipe 532 is equipped with several ring fins 533, and steam-generating bank 52 is wrapped Several annular evaporation tubes 521 are included, annular evaporation tube 522 is looped around 532 outside of air inlet mouth of pipe 531 and outlet mouth of pipe, and adjacent One annular evaporation tube 521 is installed between two ring fins 533, is respectively equipped with above and below annular evaporation tube 521 Entrance and exit is respectively equipped with above and below " u "-shaped support tube 53 and is connected to the entrance and exit of annular evaporation tube 521 Isocon 522 and collecting pipe 523, isocon 522 and collecting pipe 523 respectively with the air inlet and outlet of corresponding steam-generating bank 52 Mouth connection.

The partition 54 for separating two groups of " u "-shaped support tubes 53, the two sides of " u "-shaped support tube 53 are additionally provided with inside shell 51 Equipped with the hold-down support 55 being fixedly mounted on 51 inside of shell and partition 54.

Tube bundle support seat 56, tube bank branch are additionally provided between the air inlet mouth of pipe 531 and outlet mouth of pipe 532 of " u "-shaped support tube 53 Supportting seat 56 includes two support platforms 561 for being oppositely arranged and being combined with annular evaporation tube 521, between two support platforms 561 Equipped with several cooling fins 562, the both ends of cooling fin 562 extend out to the tube wall with air inlet mouth of pipe 531 and outlet mouth of pipe 532 In conjunction with.

Preferably, to increase contact area, support platform 561 is equipped with several for accommodating annular evaporation tube 521 Groove body (not shown).

Annular evaporation tube 521 includes two bend pipe 521a in conjunction with " u "-shaped support tube, and is arranged in two bend pipes Straight tube 521b between 521a, the junction between bend pipe 521a and straight tube 521b are equipped with sealing element 521c.

When equipment is run, refrigerant exports to oil eliminator 2 by compressor 1, is condensed into entering condenser 3 Liquid is stored in high pressure liquid storage bottle 41, and the liquid in high pressure liquid storage bottle 41 arrives expansion valve 7 by device for drying and filtering 6, passes through section It is flow gasification, into evaporator 5, the heat of air is absorbed, freezer is made to cool down, while the blower in freezer passes through 15 He of air inlet duct Air in freezer is blown into evaporator 5 by exhaust passage 16, is accelerated cooling rate, is passed through gas-liquid by the gas that evaporator 5 comes out Separator 8 shunts, and liquid is stored in low pressure receiver bottle 42, and gas cools down to cooling circulating water by heat exchanger 9, by exchanging heat The air entry that the gas that device 9 comes out enters compressor 1 completes one cycle.

When the liquid capacity in low pressure receiver bottle 42 be more than limitation, open pressurized liquid injection pipeline 12 on solenoid valve 14 and plus Liquid pressing is injected high pressure liquid storage bottle 41, to reduce the consumption of refrigerant by press pump 13.

The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.Current row The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model Claimed range is defined by the appending claims and its equivalent thereof.

Claims (8)

1. a kind of dedicated refrigeration unit of freezer, including compressor, oil eliminator, condenser, high pressure liquid storage bottle and evaporator, special Sign is: the outlet of the compressor is connect with oil eliminator, and the oil eliminator is connect with condenser inlet, the condenser Outlet connect with high pressure liquid storage bottle, the liquid outlet of the high pressure liquid storage bottle passes through device for drying and filtering and expansion valve and evaporator Entrance connection, the outlet of the evaporator are connected with gas-liquid separator, and the outlet end of the gas-liquid separator is connected with low pressure storage Liquid bottle, outlet side are connected to an entrance of heat exchanger, and the primary outlet of the heat exchanger and the air entry of the compressor connect It connects, the secondary entrance of the heat exchanger and secondary outlet are connect with cooling water circulating pipe, the liquid outlet of the low pressure receiver bottle Pressurized liquid injection pipeline is connected between the inlet of the high pressure liquid storage bottle, the pressurized liquid injection pipeline is equipped with force (forcing) pump.

2. a kind of dedicated refrigeration unit of freezer as described in claim 1, it is characterised in that: the evaporator includes shell, institute State and be equipped with two groups of steam-generating banks in shell, two groups of steam-generating banks are arranged in parallel, shell be equipped with respectively with two groups of steamings The air inlet and air outlet of the entrance and exit connection of hair tube bank, the air inlet are connect with the expansion valve, the gas outlet It is connect with the gas-liquid separator.

3. a kind of dedicated refrigeration unit of freezer as claimed in claim 2, it is characterised in that: the enclosure interior is additionally provided with two groups The " u "-shaped support tube being set side by side, disk is located on the " u "-shaped support tube respectively for two groups of steam-generating banks, two groups of " u "-shaped branch The opening of stay tube is disposed opposite to each other, and the " u "-shaped support tube includes air inlet mouth of pipe and outlet mouth of pipe, the air inlet mouth of pipe and escape pipe Mouth is connect with the air inlet duct of blower and exhaust passage respectively；The outer tube wall of the air inlet mouth of pipe and outlet mouth of pipe is equipped with several rings Shape fin, the steam-generating bank include several annular evaporation tubes, and the annular evaporation tube is looped around the air inlet mouth of pipe and goes out On the outside of gas tube orifice, and an annular evaporation tube is installed between two neighboring ring fin, the top of the annular evaporation tube and It is respectively arranged below with entrance and exit, is respectively equipped with above and below the " u "-shaped support tube and the annular evaporation tube The isocon and collecting pipe of entrance and exit connection, the isocon and collecting pipe respectively with the air inlet of corresponding steam-generating bank It is connected with gas outlet.

4. a kind of dedicated refrigeration unit of freezer as claimed in claim 3, it is characterised in that: the enclosure interior is additionally provided with institute The partition that two groups of " u "-shaped support tubes separate is stated, the two sides of the " u "-shaped support tube, which are equipped with, is fixedly mounted on the case inside With the hold-down support on the partition.

5. a kind of dedicated refrigeration unit of freezer as claimed in claim 3, it is characterised in that: the air inlet of the " u "-shaped support tube Be additionally provided with tube bundle support seat between nozzle and outlet mouth of pipe, the tube bundle support seat include two be oppositely arranged and with the annular The support platform that evaporation tube combines, is equipped with several cooling fins between described two support platforms, the both ends of the cooling fin to It extends in conjunction with the tube wall of the air inlet mouth of pipe and outlet mouth of pipe outside.

6. a kind of dedicated refrigeration unit of freezer as claimed in claim 5, it is characterised in that: the support platform is equipped with several A groove body for being used to accommodate the annular evaporation tube.

7. a kind of dedicated refrigeration unit of freezer as claimed in claim 3, it is characterised in that: the annular evaporation tube includes two Bend pipe in conjunction with the " u "-shaped support tube, and the straight tube being arranged between described two bend pipes, the bend pipe and straight tube it Between junction be equipped with sealing element.

8. the dedicated refrigeration unit of a kind of freezer as described in any one of claim 1 to 7, it is characterised in that: the pressurized liquid injection Solenoid valve is mounted on the pipeline connecting on pipeline and with the liquid outlet of the high pressure liquid storage bottle.