CN202530811U

CN202530811U - Spontaneous air-conditioned cold store for fresh keeping of fruits and vegetables

Info

Publication number: CN202530811U
Application number: CN2012201082024U
Authority: CN
Inventors: 王娟; 王相友; 韩鑫; 黄淼; 夏妮
Original assignee: Shandong University of Technology
Current assignee: Shandong University of Technology
Priority date: 2012-03-21
Filing date: 2012-03-21
Publication date: 2012-11-14
Anticipated expiration: 2022-03-21

Abstract

The utility model relates to a fresh-keeping device and particularly relates to a spontaneous air-conditioned cold store for fresh keeping of fruits and vegetables. The air-conditioned cold store is mainly composed of an air-conditioned cold store body, a volume regulation device and a control device. The volume is regulated through lateral movement of a moving partition wall, so that the free volume of gases in a closed space is small when materials of different quantities are stored, and appropriate gas conditions can be achieved quickly through the material respiration; and when the concentration of oxygen is lower than a set value, air is charged into the air-conditioned cold store to regulate the gas concentration through coordination of the moving partition wall and an air pressure check valve. By the aid of the technical scheme, the air-conditioned cold store eliminates the defects that traditional air-conditioned cold stores are high in building and operation cost and not applicable to short-term storage of materials, and the air-conditioning effect is achieved mainly through the respiration action of materials and the regulation of the volume.

Description

A kind of preserving fruit and vegetable utilizing is used the self start type air-conditioned cold store

Technical field

The utility model relates to a kind of freshness preserving equipment, and especially a kind of preserving fruit and vegetable utilizing is used the self start type air-conditioned cold store.

Background technology

Thereby modified atmosphere storage technology is meant through the relative scale that changes the gas componant in air-conditioned cold store or the packaging bag and reaches the purpose that prolongs storage period and shelf life and keep fruit quality.The fruit and vegetable air-conditioning storage technique roughly is divided into two types, i.e. the spontaneous adjusting storage of gas (Modified atmosphere) is called for short MA, and gas control storage (Controlled atmosphere), is called for short CA.It is the simple air conditioning storage that utilizes blister-pack that MA preserves, and promptly utilizes the suitable blister-pack fruits and vegetables of water-permeable and air permeable property, in packing container, forms relatively more suitable gas composition, to reach inhibition or to slow down fruits and vegetables respiratory intensity and metabolic purpose.

The CA storage is meant a kind of cold preserving method through gas component ratio and composition in the effect adjusting storage environment of machinery, generally is to reduce O in the environment ₂Concentration, raising CO ₂Concentration keeps being suitable for the optimal gas composition of fruit vegetables storing, and CA is the development of the spontaneous adjusting storage of gas (MA), compares it with MA and has multiple advantages such as the long and storage effect of storage time is good.CA storage can initiatively obtain the gas of the required best proportioning of fruits and vegetables through various regulative modes, with this activity that suppresses to cause the physiological and biochemical procedure of the bad change of fruits and vegetables and fruits and vegetables are had dysgenic microorganism.

Air-conditioned cold store is a kind of equipment that can realize the CA storage.Mostly existing air-conditioned cold store is through nitrogen making machine production of high purity in next life nitrogen, behind the injection air-conditioned cold store, cooperates O ₂Remove equipment, set up the controlled atmosphere environment of a hypoxemia.This makes the construction of air-conditioned cold store and running cost higher.On the other hand, the volume of existing air-conditioned cold store can't be adjusted, when the shared cumulative volume of fruits and vegetables hour because the gas free volume is bigger, make to reach low O in the air-conditioned cold store ₂The time of controlled atmosphere environment is longer, is inappropriate for the fruits and vegetables of short-term storage especially.Above reason has caused the promotion and application well of fruit and vegetable air-conditioning storehouse.Therefore, need a kind of high purity N of can realizing not feeding at present ₂The controlled atmosphere effect can be reached, the air-conditioned cold store of short-term storage fruits and vegetables can be suitable for again.

The utility model content

The utility model provides a kind of can realize above-mentioned purpose, and can volume adjusted size, the air-conditioned cold store of spontaneous adjustments of gas concentration.

Its technical scheme is: comprise air-conditioned cold store main body, volume adjusting means and control device; It is characterized in that: the air-conditioned cold store main body comprises storehouse body, hermatic door, air pressure one way valve I and air pressure one way valve II; The storehouse body is by i iron; The cuboid storehouse body that material such as angle steel, insulating board is formed, hermatic door is located on the side walls of storehouse body, and air pressure one way valve I and air pressure one way valve II are installed on the body of storehouse; Volume adjusting means comprises stepper motor, reducer, shaft coupling, screw thick stick, screwed hole and moving partition; It is inner that moving partition is installed in the storehouse body; The screwed hole that the screw thick stick passes on the moving partition is connected with reducer through shaft coupling, and reducer provides power by stepper motor; Control device comprises that humiture detects adjusting device, O ₂And CO ₂Concentration detects adjusting device, single-chip microcomputer, keyboard and LCD; Humiture detects adjusting device and comprises digital hygro sensor, air compressor, humidifier, relay; Digital hygro sensor and air compressor be installed in the storehouse body inner and with the wall of hermatic door homonymy on, and link to each other with single-chip microcomputer respectively, humidifier also be installed in body inside, storehouse and with the wall of hermatic door homonymy on; And link to each other O with single-chip microcomputer through relay ₂And CO ₂Concentration detects adjusting device and comprises O ₂Sensor and CO ₂Sensor, O ₂Sensor, CO ₂Sensor be installed in the body of storehouse with hermatic door homonymy inwall on, and link to each other with single-chip microcomputer.

Described a kind of preserving fruit and vegetable utilizing is used the self start type air-conditioned cold store, and air pressure one way valve I and air pressure one way valve II can be installed on the wall with the hermatic door homonymy, also can be installed in the top of storehouse body, and in the side near hermatic door.

Described a kind of preserving fruit and vegetable utilizing is used the self start type air-conditioned cold store, be elastomeric material around the moving partition, with the assurance moving partition in moving process and the sealing between the body of storehouse.

Described a kind of preserving fruit and vegetable utilizing is used the self start type air-conditioned cold store, and keyboard directly links to each other with single-chip microcomputer, and the operator is through shift position, humiture setting value and the O of keyboard to single-chip microcomputer input moving partition ₂Concentration set point.

Described a kind of preserving fruit and vegetable utilizing is used the self start type air-conditioned cold store, and LCD directly links to each other with single-chip microcomputer, and the O that single-chip microcomputer is received ₂Concentration, CO ₂Data in real time such as concentration, humidity, temperature show.

Its operating principle is: the material that the air-conditioned cold store operator will preserve is sidelong near hermatic door one and is put; And according to how many initial positions through keyboard input moving partition of material; Single-chip microcomputer is directly controlled the work of ULN2003 chip for driving according to the signal of keyboard input; Thereby drive stepping motor, the rotation meeting of stepper motor drives the screw thick stick through reducer and rotates, and screw thick stick rotation meeting moves moving partition through screwed hole to the left or to the right.

Through the setting value of keyboard to single-chip microcomputer input humiture; Temperature and wet sensor import detected humiture data in the single-chip microcomputer into, and single-chip microcomputer sends the temperature and humidity value to LCD and shows; Single-chip microcomputer compares processing with humidity detection value and setting value, if humidity less than setting value with regard to control relay work, thereby the circuit of connecting humidifier makes its work; If the temperature monitoring value is higher than design temperature, single-chip microcomputer is the drive air compressor operating then.

Import O through keyboard to single-chip microcomputer ₂The setting value of concentration; Pass through O ₂Sensor and CO ₂O in the sensor sample air-conditioned cold store ₂Concentration and CO ₂Concentration, and numerical value imported in the single-chip microcomputer, single-chip microcomputer is passed to liquid crystal display displays with the data that collect and is come out, and sampled value is handled; Work as O ₂Concentration is lower than the O that sets ₂During the concentration limit value, single-chip microcomputer just sends signal, and drive stepping motor is rotated; Moving partition is moved right, and the inner pressure of air-conditioned cold store this moment is lower than atmospheric pressure, and air pressure one way valve I will be opened automatically; Air outside is flowed into; When internal pressure was not less than atmospheric pressure, air pressure one way valve I will be closed automatically, works as O ₂Concentration is higher than the O that sets ₂During the upper limit of concentration value, single-chip microcomputer just sends signal, makes moving partition stop to move; When moving partition moved to low order end position (maximum volume place), single-chip microcomputer just sent signal, and drive stepping motor is rotated; Make moving partition be moved to the left initial position; The inner pressure of air-conditioned cold store this moment is higher than atmospheric pressure, and air pressure one way valve II will be opened automatically, and gas inside is flowed out; When internal pressure was not higher than atmospheric pressure, air pressure one way valve II will be closed automatically.

Adopt such scheme compared with prior art to have following beneficial effect: the utility model has adopted by single-chip microcomputer and has controlled automatically, can detect automatically, adjusting and displays temperature, humidity, O ₂Concentration, CO ₂Concentration; And adopted the air pressure one way valve, when the gas pressure intensity in the air-conditioned cold store was lower than atmospheric pressure, air pressure one way valve I will be opened, and in air-conditioned cold store, charged into air (but not nitrogen) and regulated the gas concentration in the air-conditioned cold store; Especially adopted the method for work of volume adjustable; Make the material in the air-conditioned cold store occupy the minimum usefull space; Reduced the free volume of gas; Make material can pass through the interior gas concentration of self respiration adjusting air-conditioned cold store quickly, and regulate the volume of air-conditioned cold store and the gas concentration in the air-conditioned cold store through the move left and right of moving partition.

Description of drawings

Fig. 1 is the structural representation of the utility model.

The specific embodiment

1, storehouse body 2, hermatic door 3, air pressure one way valve I 4, air pressure one way valve II 5, stepper motor 6, reducer

7, shaft coupling 8, screw thick stick 9, screwed hole 10, moving partition 11, single-chip microcomputer 12, keyboard

13, LCD 14, Temperature Humidity Sensor 15, air compressor 16, humidifier 17, relay

18, O ₂Sensor 19, CO ₂Sensor.

In the embodiment shown in fig. 1: storehouse body 1 is by i iron; The cuboid storehouse body that material such as angle steel, insulating board is formed; Hermatic door 2 is located on the side walls of storehouse body 1; Air pressure one way valve I 3 is installed on the wall with hermatic door 2 homonymies the top that is installed in storehouse body 1 with air pressure one way valve II 4, and in the side near hermatic door 2; Moving partition 10 is installed in storehouse body 1 inside, and the screwed hole 9 that screw thick stick 8 passes on the moving partition 10 is connected with reducer 6 through shaft coupling 7, and reducer 6 provides power by stepper motor 5; Digital hygro sensor 14 and air compressor 15 be installed in storehouse body 1 inner and with the wall of hermatic door 2 homonymies on; And link to each other with single-chip microcomputer 11 respectively; Humidifier 16 also be installed in storehouse body 1 inner and with the wall of hermatic door 2 homonymies on, and link to each other O with single-chip microcomputer 11 through relay 17 ₂ Sensor 18, CO ₂Sensor 19 be installed in the storehouse body 1 with hermatic door 2 homonymy inwalls on, and link to each other with single-chip microcomputer 11.

Around the moving partition 10 be elastomeric material, with assurance moving partition 10 in moving process and the sealing between the storehouse body 1.

Keyboard 12 directly links to each other with single-chip microcomputer 11, and the operator is through shift position, humiture setting value and the O of keyboard 12 to single-chip microcomputer 11 input moving partitions 10 ₂Concentration set point.

LCD 13 directly links to each other with single-chip microcomputer 11, and the O that single-chip microcomputer 11 is received ₂Concentration, CO ₂Data in real time such as concentration, humidity, temperature show.

More than show and described basic principle of the utility model and the advantage of principal character and the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the manual that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.

Claims

1. a preserving fruit and vegetable utilizing is used the self start type air-conditioned cold store; Comprise air-conditioned cold store main body, volume adjusting means and control device; It is characterized in that: the air-conditioned cold store main body comprises storehouse body (1), hermatic door (2), air pressure one way valve I (3) and air pressure one way valve II (4); Storehouse body (1) is by i iron; The cuboid storehouse body that material such as angle steel, insulating board is formed, hermatic door (2) is located on the side walls of storehouse body (1), and air pressure one way valve I (3) is installed on the storehouse body (1) with air pressure one way valve II (4); Volume adjusting means comprises stepper motor (5), reducer (6), shaft coupling (7), screw thick stick (8), screwed hole (9) and moving partition (10); Moving partition (10) is installed in storehouse body (1) inside; The screwed hole (9) that screw thick stick (8) passes on the moving partition (10) is connected with reducer (6) through shaft coupling (7), and reducer (6) provides power by stepper motor (5); Control device comprises that humiture detects adjusting device, O ₂And CO ₂Concentration detects adjusting device, single-chip microcomputer (11), keyboard (12) and LCD (13); Humiture detects adjusting device and comprises digital hygro sensor (14), air compressor (15), humidifier (16), relay (17); Digital hygro sensor (14) and air compressor (15) be installed in storehouse body (1) inner and with the wall of hermatic door (2) homonymy on; And link to each other with single-chip microcomputer (11) respectively; Humidifier (16) also be installed in storehouse body (1) inner and with the wall of hermatic door (2) homonymy on, and link to each other O with single-chip microcomputer (11) through relay (17) ₂And CO ₂Concentration detects adjusting device and comprises O ₂Sensor (18) and CO ₂Sensor (19), O ₂Sensor (18), CO ₂Sensor (19) be installed in the storehouse body (1) with hermatic door (2) homonymy inwall on, and link to each other with single-chip microcomputer (11).

2. a kind of preserving fruit and vegetable utilizing according to claim 1 is used the self start type air-conditioned cold store; It is characterized in that: air pressure one way valve I (3) and air pressure one way valve II (4) can be installed on the wall with hermatic door (2) homonymy; Also can be installed in the top of storehouse body (1), and in the side near hermatic door (2).

3. a kind of preserving fruit and vegetable utilizing according to claim 1 is used the self start type air-conditioned cold store, it is characterized in that: around the moving partition (10) for elastomeric material, to guarantee that moving partition (10) is in moving process and the sealing between the storehouse body (1).

4. a kind of preserving fruit and vegetable utilizing according to claim 1 is used the self start type air-conditioned cold store; It is characterized in that: keyboard (12) directly links to each other with single-chip microcomputer (11), and the operator is through shift position, humiture setting value and the O of keyboard (12) to single-chip microcomputer (11) input moving partition (10) ₂Concentration set point.

5. a kind of preserving fruit and vegetable utilizing according to claim 1 is used the self start type air-conditioned cold store, it is characterized in that: LCD (13) directly links to each other with single-chip microcomputer (11), and the O that single-chip microcomputer (11) is received ₂Concentration, CO ₂Data in real time such as concentration, humidity, temperature show.