Marine air-conditioning refrigeration and fresh-keeping device and ship

Abstract

The invention provides a marine air-conditioning refrigeration and fresh-keeping device and a ship. The marine air-conditioning refrigeration and fresh-keeping device comprises a fresh-keeping storehouse, and a refrigeration air cooler, an ozone generator, a temperature sensor, a humidity sensor, an air pressure sensor and an oxygen concentration sensor are arranged in the fresh-keeping storehouse; the gas conditioning machine is connected with the fresh-keeping storehouse through a pipeline and is used for adjusting the gas concentration and gas components in the fresh-keeping storehouse; the temperature sensor is electrically connected with the refrigeration air cooler; the humidity sensor is electrically connected with the humidifier, and the humidifier is used for adjusting the air humidity in the fresh-keeping storehouse; the oxygen concentration sensor is electrically connected with the deaerator, and the deaerator is used for discharging oxygen in the fresh-keeping storehouse; the air pressure sensor is connected with the air supply device, and the air supply device is used for supplementing air into the fresh-keeping storehouse; and the ozone generator is used for providing ozone for the fresh-keeping storehouse to achieve a sterilization effect. The fresh-keeping effect of fruits and vegetables in the warehouse is effectively improved by adjusting the temperature and humidity in the warehouse and the content of oxygen and air and assisting ozone sterilization.

Description

Technical Field

[0001] The invention belongs to the technical field of ship refrigeration and fresh-keeping, and in particular relates to a ship atmosphere-controlled refrigeration and fresh-keeping device and a ship. Background Art

[0002] There are two types of refrigeration devices on existing ships. One is a cold storage enclosed by six sides of insulated cold storage panels, and the other is a container as a cold storage carrier, with thermal insulation installed inside the container. The cold air blower for refrigeration and the ozone generator for disinfection are installed in the warehouse. The temperature in the warehouse is maintained between 2℃ and 4℃, and it is used to store vegetables, fruits, eggs, etc., extending the storage time of items in the warehouse.

[0003] The existing refrigeration equipment on ships is only equipped with air coolers and ozone generators in the warehouse, and is not equipped with facilities to control oxygen concentration, air humidity in the warehouse, precise temperature control, and uniform temperature in the warehouse. It cannot control oxygen concentration and precisely control the temperature and humidity in the warehouse, etc., and can only meet ordinary storage and refrigeration functions. The preservation time of vegetables, fruits, etc. is short and the preservation effect is poor, generally not exceeding 25 days. Summary of the invention

[0004] The object of the present invention is to provide a marine gas-controlled refrigeration and fresh-keeping device and a ship with good fresh-keeping effect.

[0005] The first aspect of the present invention provides a marine controlled atmosphere refrigeration and fresh-keeping device, comprising:

[0006] Fresh-keeping warehouse, which is equipped with a refrigeration air cooler, an ozone generator, a temperature sensor, a humidity sensor, an air pressure sensor and an oxygen concentration sensor;

[0007] The gas conditioner is connected to the fresh-keeping warehouse pipeline and is used to adjust the gas concentration and gas composition in the fresh-keeping warehouse;

[0008] The temperature sensor is electrically connected to the refrigeration air cooler;

[0009] The humidity sensor is electrically connected to the humidifier, and the humidifier is used to adjust the air humidity in the fresh-keeping warehouse;

[0010] The oxygen concentration sensor is electrically connected to the deoxygenator, which is used to discharge oxygen in the fresh-keeping warehouse;

[0011] The air pressure sensor is connected to the air supply device, and the air supply device is used to add air to the fresh-keeping warehouse;

[0012] The ozone generator is used to provide ozone in the fresh-keeping room to kill bacteria.

[0013] Optionally, the marine gas-controlled refrigeration and preservation device further includes a PLC, a limit switch and an exhaust fan;

[0014] The PLC is electrically connected to the refrigeration air cooler, the exhaust fan and the limit switch respectively;

[0015] The limit switch is set on the door of the fresh-keeping warehouse. When the limit switch detects that the door is open, the limit switch transmits a signal to the PLC. The PLC controls the refrigeration air cooler to stop working, starts the exhaust fan to discharge the gas in the fresh-keeping warehouse, and controls the air supply device to replenish fresh air in the fresh-keeping warehouse.

[0016] Optionally, the humidifier, deaerator and air supply device are all integrated in the gas conditioner.

[0017] Optionally, the refrigeration air cooler is a precise temperature control air cooler. When the temperature in the fresh-keeping room deviates from the set temperature by +0.5°C, the temperature sensor inputs a signal to the precise temperature control air cooler to start the precise temperature control air cooler in the room to cool the fresh-keeping room. When the temperature in the room reaches the set temperature, the precise temperature control air cooler stops.

[0018] Optionally, when the oxygen concentration of the air in the fresh-keeping room exceeds a set value, the oxygen concentration sensor will start the deoxygenator to remove the oxygen in the fresh-keeping room, reducing the oxygen content in the fresh-keeping room to the set value and increasing the nitrogen content, thereby reducing the metabolism of fruits and vegetables in the fresh-keeping room and extending the storage time of fruits and vegetables.

[0019] Optionally, while the deaerator is working, the air supply device is started synchronously to replenish air into the fresh-keeping warehouse.

[0020] Optionally, the air supply device includes a blower, and the blower supplies compressed air into the fresh-keeping warehouse.

[0021] Optionally, the fresh-keeping store is further provided with a natural wind inlet, and an electric control valve is provided on the natural wind inlet.

[0022] Optionally, the fresh-keeping store is also connected to a condensed water drain pipe.

[0023] A second aspect of the present invention provides a ship, on which is provided any one of the marine controlled atmosphere refrigeration and fresh-keeping devices of the first aspect of the present invention.

[0024] The beneficial effects brought by the present invention are as follows:

[0025] The present invention is provided with a refrigeration air cooler, an ozone generator, a temperature sensor, a humidity sensor, an air pressure sensor and an oxygen concentration sensor in the fresh-keeping warehouse; the temperature sensor and the humidity sensor are used to detect the temperature and humidity in the fresh-keeping warehouse and adjust the temperature in the fresh-keeping warehouse through the refrigeration air cooler, and adjust the humidity in the fresh-keeping warehouse through the humidifier. The fruits and vegetables stored in the fresh-keeping warehouse are disinfected by the ozone generator, the oxygen concentration in the fresh-keeping warehouse is detected by the oxygen concentration sensor, and the deoxygenator appropriately discharges the oxygen in the fresh-keeping warehouse according to the detection result to reduce the metabolism of fruits and vegetables; because the air in the warehouse will be reduced during the deoxygenation process, the air pressure sensor controls the air supply device to supplement the air in the warehouse when it detects that the pressure in the warehouse drops, so as to ensure the air balance in the warehouse. It can be seen that the present invention effectively improves the preservation effect of fruits and vegetables in the warehouse by adjusting the temperature and humidity in the warehouse and the oxygen and air content and supplementing with ozone sterilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of a marine controlled atmosphere refrigeration and fresh-keeping device according to an embodiment of the present invention is shown.

[0027] In the figure, 1. air pressure sensor; 2. precise temperature control air cooler; 3. fresh-keeping room; 4. temperature sensor; 5. humidity sensor; 6. oxygen concentration sensor; 7. room door; 8. limit switch; 9. PLC; 10. air conditioner; 11. condensate drain pipe; 12. natural wind pipeline; 13. exhaust fan; 14. electric control valve. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The first aspect of the present invention provides a marine atmosphere-controlled refrigeration and preservation device. The device consists of an integrated machine, an ice-temperature preservation room, a refrigeration air cooler, and related controllers and sensors. The atmosphere-controlled integrated machine integrates the functions of oxygen-enriched removal (controlling the oxygen concentration in the cold storage), humidification (controlling the humidity in the cold storage), pressure balance in the cold storage, precise temperature control in the cold storage, and oxygen replenishment for the cold storage before personnel enter the cold storage, and these functions are automatically controlled by the PLC integrated in the atmosphere-controlled machine. The cold storage is arranged with a refrigeration air cooler, an ozone generator for sterilization, and a temperature sensor, a pressure sensor, and an oxygen concentration sensor for controlling relevant conditions in the cold storage.

[0030] Specifically, the marine gas-conditioned refrigerated fresh-keeping device comprises: a fresh-keeping storehouse 3, in which a refrigerating air cooler, an ozone generator, a temperature sensor 4, a humidity sensor 5, an air pressure sensor 1 and an oxygen concentration sensor are arranged; an air conditioner 10 connected to the pipeline of the fresh-keeping storehouse 3, used to adjust the gas concentration and gas composition in the fresh-keeping storehouse 3; the temperature sensor 4 is electrically connected to the refrigerating air cooler; the humidity sensor 5 is electrically connected to the humidifier, and the humidifier is used to adjust the air humidity in the fresh-keeping storehouse 3; the gas concentration sensor is electrically connected to the deoxygenator, and the deoxygenator is used to discharge the oxygen in the fresh-keeping storehouse 3; the air pressure sensor 1 is connected to the air supply device, and the air supply device is used to supplement air in the fresh-keeping storehouse 3; and the ozone generator is used to provide ozone in the fresh-keeping storehouse 3 to play a sterilizing role. The humidifier, the deoxygenator and the air supply device are all integrated in the gas conditioner 10.

[0031] Furthermore, the marine atmosphere-controlled refrigeration and preservation device also includes a PLC9, a limit switch 8 and an exhaust fan 13; the PLC9 is electrically connected to the refrigeration fan, the exhaust fan 13 and the limit switch 8 respectively; the limit switch 8 is arranged on the door 7 of the fresh-keeping store 3, and when the limit switch 8 detects that the door 7 is opened, the limit switch 8 transmits a signal to the PLC9, and the PLC9 controls the refrigeration fan to stop working, and at the same time starts the exhaust fan 13 to discharge the gas in the fresh-keeping store 3, and controls the air supply device to replenish fresh air into the fresh-keeping store 3.

[0032] Furthermore, the refrigeration air cooler is a precise temperature-controlled air cooler 2. When the temperature in the fresh-keeping warehouse 3 deviates from the set temperature by +0.5°C, the temperature sensor 4 inputs a signal to the precise temperature-controlled air cooler 2 to start the precise temperature-controlled air cooler 2 in the warehouse to cool the fresh-keeping warehouse 3. When the temperature in the warehouse reaches the set temperature, the precise temperature-controlled air cooler 2 stops.

[0033] Furthermore, when the oxygen content concentration of the air in the fresh-keeping warehouse 3 exceeds the set value, the oxygen concentration sensor will start the deoxygenator to remove the oxygen in the fresh-keeping warehouse 3, so that the oxygen content in the fresh-keeping warehouse 3 is reduced to the set value and the nitrogen content is increased, thereby reducing the metabolism of fruits and vegetables in the fresh-keeping warehouse 3 and extending the storage time of fruits and vegetables.

[0034] Furthermore, while the deaerator is working, the air supply device is started synchronously to replenish air into the fresh-keeping warehouse 3. The air supply device includes a blower, which supplies compressed air into the fresh-keeping warehouse 3.

[0035] Furthermore, the fresh-keeping store 3 is also provided with a natural wind inlet and a condensed water drain pipe 12. The natural wind inlet is provided with a natural wind pipeline. The natural wind pipeline is provided with an electric control valve 14. The electric control valve 14 on the natural wind pipeline can be opened to allow natural wind to flow into the fresh-keeping store 3. The condensed water drain pipe 12 is used to discharge the condensed water generated in the fresh-keeping store 3.

[0036] Working principle:

[0037] 1. Temperature control in cold storage: The refrigeration air cooler of this device is a precise temperature control air cooler 2. When the temperature in the cold storage deviates from the set temperature by +0.5°C, the high-precision temperature sensor 4 inputs a signal to the precise temperature control air cooler 2, and the precise temperature control air cooler 2 in the cold storage is started to cool the cold storage. When the temperature in the cold storage reaches the set temperature, the precise temperature control air cooler 2 stops.

[0038] 2. Control of humidity in cold storage: In order to extend the storage time of vegetables and fruits in cold storage, there are also requirements for humidity. The humidity required in the cold storage can be set according to the types of vegetables and fruits stored in the cold storage each time. If the humidity in the cold storage is too low, the moisture of the vegetables and fruits will be lost quickly, causing the vegetables and fruits to wilt. The humidifier of this device is integrated in the air conditioner 10. When the humidity sensor 5 detects that the humidity in the cold storage is too low, it will give a signal to start the humidifier until the humidity in the cold storage reaches the set humidity and stops.

[0039] 3. Control of oxygen concentration in cold storage: Reducing the oxygen concentration in the cold storage can reduce the respiration intensity of fruits and vegetables, thereby slowing down the metabolism of fruits and vegetables and the loss of nutrients, and delaying the decay of fruits and vegetables. When the oxygen concentration in the cold storage is set, when the oxygen content of the air in the cold storage exceeds the set value, the oxygen concentration sensor 6 will start the deoxygenator integrated in the gas conditioner 10 to remove the oxygen in the cold storage, so that the oxygen content in the cold storage is reduced to the set value, and the nitrogen content is increased, thereby reducing the metabolism of fruits and vegetables in the cold storage, and prolonging the storage time of fruits and vegetables.

[0040] 4. Control of the pressure in the cold storage: During the deoxygenation process, the air in the cold storage will be reduced and can be supplemented through the compressed air inlet. The air pressure sensor 1 controls the small blower in the air conditioner 10 to start supplementary air. The third and fourth control points are carried out simultaneously until a balance is reached.

[0041] 5. Control of air replenishment when the cold storage door 7 is opened: Due to the low oxygen content in the warehouse, personnel will feel uncomfortable when entering the warehouse to take materials. In this case, fresh air needs to be replenished in the warehouse. The control principle is to install a limit switch 8 on the cold storage door 7. When the cold storage door 7 is opened, the limit switch 8 outputs a signal to the air conditioner 10 PLC9, and the PLC9 gives a signal to stop the cold air and the air conditioner 10, and at the same time start the exhaust fan 13 to exhaust the gas in the warehouse, and replenish fresh air into the warehouse from the air inlet.

[0042] A second aspect of the present invention provides a ship, on which is provided any one of the marine controlled atmosphere refrigeration and fresh-keeping devices of the first aspect of the present invention.

[0043] The present invention solves the problem of short preservation time of vegetable storage on ships, meets the requirements of many special ships, and reduces the difficulty of shipyard construction. The specific beneficial effects include the following:

[0044] 1. The storage time of vegetables and fruits in existing ship cold storage is too short. This device can extend the preservation time of vegetables and fruits from about 25 days to about 75 days;

[0045] 2. This device can reduce the frequency of replenishing vegetables and fruits on board ships;

[0046] 3. Solve the problem that some special ships cannot dock for resupply for a long time. Once resupply, the food can be kept fresh for a long time;

[0047] 4. This equipment can be integrated with a compressor unit according to different requirements and installed in the open area of ​​the shipowner as an independent device, and can be removed if not applicable.

[0048] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A marine atmosphere-controlled refrigeration and fresh-keeping device, characterized in that: include: A fresh-keeping store, wherein a refrigeration air cooler, an ozone generator, a temperature sensor, a humidity sensor, an air pressure sensor and an oxygen concentration sensor are arranged in the fresh-keeping store; An air conditioner connected to the fresh-keeping store pipeline and used to adjust the gas concentration and gas composition in the fresh-keeping store; The temperature sensor is electrically connected to the refrigeration air cooler; The humidity sensor is electrically connected to a humidifier, and the humidifier is used to adjust the air humidity in the fresh-keeping store; The oxygen concentration sensor is electrically connected to a deoxygenator, and the deoxygenator is used to discharge oxygen in the fresh-keeping store; The air pressure sensor is connected to an air supply device, and the air supply device is used to add air to the fresh-keeping store; The ozone generator is used to provide ozone in the fresh-keeping store to sterilize.

2. The marine controlled atmosphere refrigeration and fresh-keeping device according to claim 1, characterized in that: The marine gas-controlled refrigeration and fresh-keeping device also includes a PLC, a limit switch and an exhaust fan; The PLC is electrically connected to the refrigeration air cooler, the exhaust fan and the limit switch respectively; The limit switch is arranged on the door of the fresh-keeping storage. When the limit switch detects that the door is opened, the limit switch transmits a signal to the PLC. The PLC controls the refrigeration air cooler to stop working, starts the exhaust fan to discharge the gas in the fresh-keeping storage, and controls the air supply device to replenish fresh air into the fresh-keeping storage.

3. The marine controlled atmosphere refrigeration and fresh-keeping device according to claim 1 or 2, characterized in that: The humidifier, the deoxygenator and the air supply device are all integrated in the air conditioner.

4. The marine controlled atmosphere refrigeration and fresh-keeping device according to claim 1 or 2, characterized in that: The refrigeration air cooler is a precise temperature-controlled air cooler. When the temperature in the fresh-keeping room deviates from the set temperature by +0.5°C, the temperature sensor inputs a signal to the precise temperature-controlled air cooler to start the precise temperature-controlled air cooler in the room to cool the fresh-keeping room. When the temperature in the room reaches the set temperature, the precise temperature-controlled air cooler stops.

5. The marine controlled atmosphere refrigeration and fresh-keeping device according to claim 1 or 2, characterized in that: When the oxygen content concentration of the air in the fresh-keeping store exceeds a set value, the oxygen concentration sensor will start the deoxygenator to remove the oxygen in the fresh-keeping store, so that the oxygen content in the fresh-keeping store is reduced to the set value and the nitrogen content is increased, thereby reducing the metabolism of fruits and vegetables in the fresh-keeping store and extending the storage time of fruits and vegetables.

6. The marine controlled atmosphere refrigeration and fresh-keeping device according to claim 5, characterized in that: When the deaerator is working, the air supply device is started synchronously to replenish air into the fresh-keeping store.

7. The marine gas-controlled refrigeration and fresh-keeping device according to claim 6, characterized in that: The air supply device includes a blower, and the blower supplies compressed air into the fresh-keeping store.

8. The marine controlled atmosphere refrigeration and fresh-keeping device according to claim 1 or 2, characterized in that: The fresh-keeping store is also provided with a natural wind inlet, and an electric control valve is provided on the natural wind inlet.

9. The marine controlled atmosphere refrigeration and fresh-keeping device according to claim 1 or 2, characterized in that: The fresh-keeping store is also connected with a condensed water drain pipe.

10. A ship, characterized in that: The ship is provided with a marine controlled atmosphere refrigeration and fresh-keeping device as described in any one of claims 1 to 9.

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