Vacuum precooling device working under assistance of wind energy

Abstract

The utility model belongs to the field of vacuum fresh-keeping, and relates to a vacuum precooling device with wind-energy-assisted work. The vacuum precooling device is used for performing vacuum precooling on food, fruits and vegetables and comprises a vacuum system, a phase change material, an ultraviolet emitter, a refrigerating system, an automatic control system and a fan assembly, the vacuum system is provided with a vacuum chamber, a vacuum pump, a water catcher, a circulating water pump and a water storage chamber which are sequentially connected through a vacuum pipeline, the vacuum chamber is used for storing food and fruits, the water catcher is used for cooling high-temperature gas coming out of the vacuum chamber and cooling water vapor into water, and the vacuum pump is used for vacuumizing the vacuum chamber. The refrigerating system can directly work under the driving of wind energy, energy is saved, and energy consumption is reduced; according to the vacuum pre-cooling device, an automatic control system is adopted, the pre-cooling effect can be monitored in real time and automatically adjusted, pre-cooling is stable, and reliability is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of vacuum preservation, and relates to a vacuum precooling device assisted by wind energy. BACKGROUND

[0002] Vacuum precooling refers to that under normal atmospheric pressure (101.325 kPa), water evaporates at 100 DEG C, and if the atmospheric pressure is 610 Pa, water evaporates at 0 DEG C, and the boiling point of water decreases with the decrease of the ambient atmospheric pressure. Boiling is rapid evaporation, which can rapidly absorb heat. Fresh fruits and vegetables are placed in a sealed container, and air and water vapor are rapidly extracted, and with the continuous decrease of the pressure, the fruits and vegetables continuously and rapidly evaporate water to cool.

[0003] At present, vacuum precooling is widely applied in the storage and preservation of food and fruits and vegetables. As for the existing vacuum precooling devices, they have the problems of poor cooling effect, low operation reliability, slow precooling speed, high energy consumption, and the phase change material cannot be used quickly and efficiently in a short time. Therefore, it is necessary to design a vacuum precooling device for food and fruits and vegetables, which has low energy consumption, high reliability and good effect SUMMARY

[0004] OBJECTIVE

[0005] The utility model aims at overcoming the defects of the prior art, and designs an energy-saving vacuum precooling device for food and fruits and vegetables, which can quickly precool food and fruits and vegetables and sterilize the vacuum chamber, and has an automatic control system, thereby effectively avoiding the problems of poor cooling effect, low operation reliability, slow precooling speed, high energy consumption and short-time high-efficiency use of the phase change material of the existing device. The scheme combines the mature technology, and is energy-saving, efficient, safe and reliable.

[0006] TECHNICAL SCHEME

[0007] A vacuum precooling device assisted by wind energy is used for vacuum precooling of food and fruits and vegetables, which comprises a vacuum system, a phase change material, an ultraviolet emitter, a refrigeration system, an automatic control system and a fan assembly. The vacuum system has a vacuum chamber, a vacuum pump, a water trap, a circulating water pump and a water storage chamber connected in sequence through a vacuum pipeline. The vacuum chamber is used for storing food and fruits. The water trap is used for cooling high-temperature gas from the vacuum chamber and cooling water vapor into water. The vacuum pump is used for vacuumizing the vacuum chamber. The vacuum chamber is provided with a water tank above and an atomizing nozzle connected with the water tank. The rear wall of the vacuum chamber is provided with an ultraviolet emitter. The left and right sides and the rear wall of the vacuum chamber are provided with phase change materials.

[0008] The first compressor, the condenser and the throttle valve are sequentially connected by pipelines in the refrigeration system, two branches are formed at the outlet of the throttle valve, the first branch flows through the phase change material back to the compressor through the electromagnetic valve, and the second branch flows through the water storage chamber and then returns to the compressor, the first compressor is connected with the second compressor in parallel, and the electromagnetic valve and the electromagnetic valve control the on-off of the two parallel circuits, in the fan assembly, the second compressor, the transmission and the fan blades are sequentially connected, and the automatic control system is composed of a temperature sensor, a temperature sensor, a pressure sensor, a PAC controller and a frequency converter.

[0009] Further, the left and right sides of the vacuum chamber have phase change materials, which are used for storing refrigeration capacity when the pre-cooling device is idle at night, and releasing latent refrigeration capacity before the pre-cooling machine works during the day.

[0010] Further, the rear wall of the vacuum chamber has an ultraviolet emitter for emitting ultraviolet rays to sterilize, remove mold and deodorize the vacuum chamber.

[0011] Further, the vacuum pre-cooling device has an automatic control system for real-time monitoring of the pre-cooling effect and automatic adjustment.

[0012] Further, the fan blades can convert wind energy into mechanical energy to be transmitted to the transmission device, and then to the second compressor, so as to drive the refrigeration system to refrigerate.

[0013] Further, the water storage chamber is connected with the water catcher through a circulating water pump, and the water in the water catcher can be collected and recycled.

[0014] The beneficial effects of the present application are:

[0015] The vacuum pre-cooling device disclosed by the utility model adopts phase change material 4 to pre-cool food and fruits and vegetables in the vacuum chamber, greatly shortens the pre-cooling time, and adopts a refrigeration system to continuously cool the food and fruits and vegetables, solves the problem that the performance is reduced after the food and fruits and vegetables are warmed up and cannot be quickly recycled in a short time, the vacuum pre-cooling device disclosed by the utility model adopts an ultraviolet emitter 6 to sterilize the vacuum chamber, and also has the functions of removing mold and deodorizing, the vacuum pre-cooling device disclosed by the utility model can directly work under the drive of wind energy, saves energy and reduces energy consumption, the vacuum pre-cooling device disclosed by the utility model adopts an automatic control system, can real-time monitor the pre-cooling effect and automatically adjust, and is pre-cooled stably and has high reliability. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the vacuum pre-cooling device of the utility model for wind power and electricity

[0017] Reference numerals:

[0018] 11: water tank; 2: vacuum chamber; 3, 21: temperature sensor; 4: phase change material; 5: pressure sensor; 6: ultraviolet emitter; 7: PAC controller; 8: atomizing nozzle; 9: frequency converter; 10: water trap; 11: vacuum pump; 12: water storage chamber; 13: throttle valve; 14: condenser; 15: first compressor; 16: second compressor; 17: first electromagnetic valve; 18: second electromagnetic valve; 19: transmission; 20: fan blade; 22: circulating water pump; 23: third electromagnetic valve. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the utility model embodiment will be described in more detail below in combination with the utility model embodiments. In the examples, the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The described embodiments are part of the embodiments of the utility model, not all. The described examples below are exemplary and are intended to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model. The utility model embodiments will be described in detail below.

[0020] A vacuum pre-cooling device assisted by wind energy is used for vacuum pre-cooling food and fruits and vegetables, which comprises a vacuum system, phase change material, an ultraviolet emitter, a refrigeration system, an automatic control system and a fan assembly; the vacuum system has a vacuum chamber 2, a vacuum pump 11, a water trap 10, a circulating water pump 22 and a water storage chamber 12 connected in sequence through vacuum pipelines, the vacuum chamber 2 is used for storing food and fruits, the water trap 10 is used for cooling high-temperature gas coming out of the vacuum chamber and cooling water vapor into water, the vacuum pump 11 is used for vacuumizing the vacuum chamber 10, the vacuum chamber 10 is provided with a water tank 1 and an atomizing nozzle 8 connected with the water tank on the top, the vacuum chamber is provided with an ultraviolet emitter 6 on the back wall, and the vacuum chamber is provided with phase change material 4 on the left and right sides and the back wall;

[0021] In the refrigeration system, a first compressor 15, a condenser 14 and a throttle valve 13 are connected in sequence by pipelines, there are two branches at the outlet of the throttle valve 13, a first branch flows through the phase change material 4 back to the compressor through an electromagnetic valve 23, and a second branch flows through the water storage chamber 12 back to the compressor; the first compressor 15 is connected in parallel with a second compressor 16, and the two parallel circuits are controlled by an electromagnetic valve 17 and an electromagnetic valve 18;

[0022] In the fan assembly, the second compressor 16, a transmission 19 and a fan blade 20 are connected in sequence.

[0023] The automatic control system is composed of the temperature sensor 3, the temperature sensor 21, the pressure sensor 5, the PAC controller 7 and the frequency converter 9;

[0024] According to the utility model: the vacuum chamber left and right sides have phase change material 4, be used for storing refrigeration capacity when night precooling device is idle, and release latent heat refrigeration before daytime precooling machine works.

[0025] According to the utility model: the vacuum chamber rear wall has ultraviolet emitter 6, be used for emitting ultraviolet to carry out sterilization, mould removal and deodorization to the vacuum chamber.

[0026] According to the utility model: the vacuum precooling device has automatic control system, is used for real-time monitoring precooling effect and automatically adjusting.

[0027] According to the utility model: the fan blade 20 can convert wind energy into mechanical energy and transmit to transmission device 17, further transmit to second compressor 16, drive refrigeration system to carry out refrigeration. When the mechanical energy converted from wind energy can not satisfy refrigeration requirement, PAC controller 7 closes electromagnetic valve 18 and opens electromagnetic valve 17, simultaneously opens first compressor 15 and carries out refrigeration.

[0028] According to the utility model: the water storage chamber 12 is connected with the water catcher 10 through circulating water pump 22, can collect the water in water catcher and circulate use.

[0029] The vacuum precooling device of wind power dual -purpose, including by through vacuum pipeline sequentially connected vacuum chamber 2, vacuum pump 11, water catcher 10 and circulating water pump 22 of the vacuum system that forms,

[0030] The refrigeration system that is connected by pipeline sequentially first compressor 15, condenser 14, throttling valve 13 and water storage chamber 12,

[0031] First compressor 15 and second compressor 16 are connected in parallel to form compressor assembly, and are controlled by first electromagnetic valve 17 and second electromagnetic valve 18 respectively to open and close two parallel circuits;

[0032] The automatic control system that is composed of temperature sensor 3, pressure sensor 5, PAC controller 7 and frequency converter 9;

[0033] The use process of the vacuum pre-cooling device of the embodiment is as follows: the final pre-cooling temperature of the vacuum chamber 2 and the temperature of the water storage chamber are set, and the temperature of the water storage chamber is slightly lower than the temperature of the vacuum chamber; the latent heat of the phase change material 4 is released, the mechanical energy converted by the fan blade 20 drives the second compressor 16 to work through the transmission 19, and the refrigeration system starts to refrigerate, and in this state, the refrigeration system is completely driven by wind energy; the food or fruit and vegetable is placed in the vacuum chamber 2, the vacuum chamber 2 is closed, the vacuum pump 11 is opened to perform vacuumization, the water trap 10 cools the high-temperature gas pumped out by the vacuum pump and traps water vapor, the condensed water vapor is mixed with the low-temperature water from the water storage chamber 12, and after cooling, is transported to the water storage chamber 12 for recycling, the temperature sensor 3 and the pressure sensor 5 are opened to detect the pre-cooling effect and feed back to the PAC controller 7, the PAC controller 7 controls the working state of the vacuum pump 11 through the frequency converter 9, when the temperature reaches the final temperature, the vacuum pump 11 stops working, the ultraviolet emitter 6 is opened to sterilize and deodorize the vacuum chamber 2, and the atomizing nozzle 8 is opened to supplement water to the material, and the pre-cooling and sterilization process is completed.

[0034] When the temperature of the water in the water storage chamber 12 does not reach the preset value, it indicates that the mechanical energy provided by the fan blade cannot meet the refrigeration requirement, the temperature sensor 21 transmits a signal to the PAC controller 7, at this time, the PAC controller 7 closes the second compressor 15, opens the first compressor 16, and at the same time, opens the first electromagnetic valve 17 and closes the second electromagnetic valve 18, and in this state, the refrigeration system is completely driven by electric energy.

[0035] The vacuum pre-cooling device provided by the embodiment has the advantages that the phase change material 4 is used to pre-cool the food and fruit and vegetable in the vacuum chamber, the pre-cooling time is greatly shortened, and the freshness of the food and fruit and vegetable is further ensured. The ultraviolet emitter 6 sterilizes the vacuum chamber 2, and also has the functions of mold removal and deodorization. The automatic control system can monitor the pre-cooling effect in real time and automatically adjust, the pre-cooling is stable and reliable, the fan blade 20 can directly drive the second compressor 16 to refrigerate, energy is saved, and the cost is reduced.

[0036] As will be understood by one of ordinary skill in the art, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the specification and relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. The specific embodiments described above are illustrative of specific embodiments of the application and are not meant to be limiting of the application. Any modification of the above-described embodiments, which comes within the spirit of the application, is intended to be included in the scope of the application. The above-described embodiments are intended to be illustrative of the application and are not meant to be limiting of the application. Any modification of the above-described embodiments, which comes within the spirit of the application, is intended to be included in the scope of the application. The above-described embodiments are intended to be illustrative of the application and are not meant to be limiting of the application. Any modification of the above-described embodiments, which comes within the spirit of the application, is intended to be included in the scope of the application.

Claims

1. A wind-assisted vacuum precooling device, characterized in that: Used for vacuum pre-cooling food and fruits and vegetables, it includes a vacuum system, phase change material, ultraviolet emitter, refrigeration system, automatic control system and fan assembly; the vacuum system includes a vacuum chamber, a vacuum pump, a water trap, a circulating water pump and a water storage chamber connected in sequence through a vacuum pipe; the vacuum chamber is used to store food and fruits; the water trap is used to cool the high-temperature gas coming out of the vacuum chamber and cool the water vapor into water; the vacuum pump is used to evacuate the vacuum chamber; the vacuum chamber is provided with a water tank and an atomizing nozzle connected to the water tank above the vacuum chamber; the rear wall of the vacuum chamber is provided with an ultraviolet emitter; the left and right sides and the rear wall of the vacuum chamber are provided with phase change material; In the refrigeration system, the first compressor, condenser, and throttle valve are connected in sequence by pipes. There are two branches at the outlet of the throttle valve. The first branch flows through the phase change material through the solenoid valve and returns to the compressor, and the second branch flows through the water storage chamber and returns to the compressor; the first compressor and the second compressor are connected in parallel, and the on and off of the two parallel circuits are controlled by the solenoid valve and the solenoid valve; in the fan assembly, the second compressor, the transmission and the fan blades are connected in sequence; the automatic control system consists of a temperature sensor, a temperature sensor, a pressure sensor, a PAC controller and a frequency converter.

2. The device according to claim 1, wherein Phase change materials are provided on the left and right sides of the vacuum chamber for storing cooling capacity when the pre-cooling device is idle at night, and releasing the potential cooling capacity before the pre-cooling device works during the day.

3. The device according to claim 2, wherein The rear wall of the vacuum chamber is provided with an ultraviolet emitter for emitting ultraviolet rays to sterilize, remove mold and deodorize the vacuum chamber.

4. The device according to claim 3, characterized in that The vacuum precooling device has an automatic control system for real-time monitoring of the precooling effect and automatic adjustment.

5. The device according to claim 4, characterized in that The fan blades can convert wind energy into mechanical energy and transmit it to the transmission device, and then to the second compressor, driving the refrigeration system to perform refrigeration; when the mechanical energy converted from wind energy cannot meet the refrigeration requirements, the PAC controller closes the solenoid valve and opens the solenoid valve, and at the same time starts the first compressor for refrigeration.

6. The device according to claim 5, characterized in that The water storage chamber is connected to the water trap via a circulating water pump and can collect water in the water trap for recycling.

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