Compact air cooler for ship

Abstract

The invention relates to a marine compact air cooler which comprises an air cooler body and a goods shelf, the air cooler body is integrated at the bottom of the goods shelf and connected with the goods shelf through a hanging rod, the wall-leaning side of the goods shelf fixed by leaning against a wall is made into a hollow interlayer, and the hollow interlayer serves as a supporting stand column of the goods shelf and also serves as an air supply channel of the air cooler; the air cooler sends cold air into the air supply interlayer of the adjustable air port through the goods shelf air supply interlayer, the cold air is diffused to the goods shelf area through the adjustable air port and returns to the air cooler again through the bottom air return port, and air flow circulation with upper air supply and lower air return is formed. The marine compact air cooler integrates the functions of the valve plate, has the main functions of throttling, heat exchange, air supply, defrosting and the like, and can meet the requirements of refrigeration, air supply and defrosting in a refrigeration house. Compared with a conventional air cooler, the air cooler is smaller in size and integrated with a goods shelf in a refrigeration house, and the storage capacity rate of the refrigeration house is greatly increased. Air is supplied into the refrigeration house through the goods shelf stand column air supply interlayer, the air supply mode is optimized, and the storage capacity rate of the refrigeration house is increased.

Description

Technical Field

[0001] The invention relates to a marine refrigeration device, in particular to a marine compact air cooler. Background Art

[0002] In the existing marine refrigeration technology, the air cooler is generally suspended and equipped with a separate valve plate to control the refrigerant flow in the air cooler. The air outlet of the air cooler is front air outlet and back air return, which requires a large installation space in the warehouse to ensure the normal operation of the air cooler, resulting in a waste of cold storage volume.

[0003] Since the cold storage capacity rate of fruit and vegetable warehouses is required to be no less than 50%, if traditional air coolers are used, a large amount of space in the cold storage will be occupied. Therefore, it is necessary to propose a mobile shelf solution, which uses a marine compact air cooler and shelf to integrate with each other to increase the cold storage capacity rate. Summary of the invention

[0004] The present invention proposes a compact marine air cooler, which is smaller in size than a general air cooler, can effectively increase the storage capacity in the cold storage, and can cooperate with a precise temperature control refrigeration device to achieve uniform air supply and precise temperature control in the entire storage.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is: a compact marine air cooler, which has an integrated valve plate and integrates throttling, heat exchange, air supply and defrosting functions. It includes an air cooler and a shelf. The air cooler is integrated at the bottom of the shelf and connected to the shelf through a hanger. The wall side of the shelf fixed against the wall is made into a hollow interlayer, which serves as a supporting column of the shelf and also as an air supply channel of the air cooler. The air cooler sends cold air to the air supply interlayer of the adjustable air outlet through the air supply interlayer of the shelf, diffuses it to the shelf area through the adjustable air outlet, and returns to the air cooler again at the bottom return air outlet, forming an upward and downward air flow circulation.

[0006] Furthermore, the return air surface of the air cooler is arranged at the bottom of the air cooler, and the bottom of the frame of the air cooler is separated from the ground by a certain distance for return air; the air outlet of the air cooler is arranged at the back of the air cooler, and the air is directly sent to the air supply interlayer when the air cooler is running.

[0007] Furthermore, the air cooler is composed of a frame, a centrifugal fan, an evaporating coil, an electronic expansion valve, a thermal expansion valve, a liquid supply solenoid valve, and a junction box. The evaporating coil is installed at the bottom of the frame of the air cooler, and the centrifugal fan is installed on the upper part of the evaporating coil, forming an angle of 30° with the air outlet.

[0008] Furthermore, the electronic expansion valve, the liquid supply solenoid valve and the thermal expansion valve are used to realize the throttling function of the air cooler, wherein the electronic expansion valve automatically adjusts the opening according to the temperature in the cold storage to maintain the temperature of the cold storage, while the liquid supply solenoid valve and the thermal expansion valve serve as backup branches of the electronic expansion valve, and the electronic expansion valve is interlocked with the centrifugal fan for control.

[0009] Furthermore, the evaporator coil is used to realize the heat exchange function. The air in the storage and the refrigerant complete heat exchange on the evaporator coil, and the heat exchange efficiency of the evaporator coil can meet the load requirements in the cold storage.

[0010] Furthermore, the centrifugal fan is used to realize the air supply function. The centrifugal fan draws the gas in the cold storage into the fan through the return air panel, exchanges heat on the evaporating coil, and then sends it to the top of the cold storage through the shelf interlayer, and then supplies air through the adjustable air outlet.

[0011] Furthermore, the evaporator coil is also connected to the defrost system, which is used in cold storages with a storage temperature below ℃ and requires the evaporator coil to be defrosted.

[0012] Furthermore, the defrost system is a hot air defrost system or an electric defrost system.

[0013] Furthermore, the hot gas defrost system uses superheated steam to throttle and then enter the evaporator coil for defrosting, and controls the gas after defrosting to remain in the superheated area, and directly enters the compressor inlet for compression again. An electronic expansion valve is installed on the hot gas defrost pipeline on the compression condensing unit side to control the gas flow of hot gas defrost, so as to more accurately control the temperature and time of hot gas defrost.

[0014] Furthermore, the electric defrost system uses an electric heating tube for defrosting, with a timed defrost setting, and sets temperature protection and time protection; the electric heating tube is interlocked with the liquid supply solenoid valve, the electronic expansion valve and the air cooler.

[0015] The beneficial effects of the present invention are:

[0016] (1) The marine compact air cooler of the present invention integrates the valve plate function and has the main functions of throttling, heat exchange, air supply, defrosting, etc., and can meet the refrigeration, air supply and defrosting needs in the cold storage.

[0017] (2) The marine compact air cooler of the present invention is smaller in size than conventional air coolers and can be integrated with the shelves in the cold storage, greatly increasing the storage capacity of the cold storage.

[0018] (3) The marine compact air cooler of the present invention supplies air to the cold storage through the air supply interlayer of the shelf columns, thereby optimizing the air supply method and increasing the cold storage capacity.

[0019] (4) The marine compact air cooler of the present invention delivers air to the top of the cold storage through the air supply interlayer of the shelf column, and then achieves uniform air supply in the cold storage through the adjustable air outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the air supply to the shelf column and the mezzanine;

[0021] Figure 2 It is a cooling fan indication Figure 1 ;

[0022] Figure 3 It is a cooling fan indication Figure 2 ;

[0023] In the figure: 1. frame, 2. centrifugal fan, 3. evaporating coil, 4. electronic expansion valve, 5. thermal expansion valve, 6. liquid supply solenoid valve, 7. junction box, 10. air cooler, 11. shelf air supply mezzanine, 12. adjustable air outlet, 13. warehouse board, 14. top air supply mezzanine. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] like Figure 1 As shown, a marine compact air cooler of the present invention is proposed. Since the cold storage capacity rate of the fruit and vegetable storage is required to be no less than 50%, if a traditional air cooler is used, a large amount of space in the cold storage will be occupied. A mobile shelf solution is proposed, in which a marine compact air cooler is integrated with the shelf to improve the cold storage capacity rate.

[0026] The fixing method of the air cooler 10 can refer to the installation form of the hanging air cooler in the cold storage, and the air cooler 10 is integrated at the bottom of the shelf and connected to the shelf through a hanging rod. A new air supply method for the air cooler is proposed, and the wall side of the wall-fixed shelf is made into a hollow interlayer, which can be used as a supporting column of the shelf and an air supply channel for the air cooler. The air cooler 10 can send cold air to the air supply interlayer of the adjustable air outlet 12 through the shelf air supply interlayer 11, diffuse to the shelf area through the adjustable air outlet, and return to the air cooler again at the bottom return air outlet, forming an air flow cycle of sending up and returning down.

[0027] like Figure 2 As shown, the fruit and vegetable warehouse air cooler integrates the valve plate function and is composed of a frame 1, a centrifugal fan 2, an evaporating coil 3, an electronic expansion valve 4, a thermal expansion valve 5, a liquid supply solenoid valve 6, a junction box 7 and other components. The return air surface of the air cooler is designed at the bottom of the air cooler, and the bottom of the air cooler frame is separated from the ground by a certain distance for return air.

[0028] The evaporating coil 3 is installed at the bottom of the cooling fan frame 1, and the centrifugal fan 2 is installed on the top of the evaporating coil 3, forming an angle of 30° with the air outlet. Figure 3 shown.

[0029] according to Figure 1The air supply form in the warehouse is that the air outlet of the air cooler is designed on the back of the air cooler, and the air is directly sent to the air supply interlayer when the air cooler is running.

[0030] The air cooler mainly completes four main functions: throttling, heat exchange, air supply, and defrosting:

[0031] a.Throttling function

[0032] The main components that complete the throttling function include the electronic expansion valve 4, the liquid supply solenoid valve 6, and the thermal expansion valve 5. The electronic expansion valve 4 automatically adjusts the opening according to the temperature in the cold storage to maintain the temperature of the cold storage. The liquid supply solenoid valve 6 and the thermal expansion valve 5 are backup branches of the electronic expansion valve 7 and have similar functions. The electronic expansion valve 4 is interlocked with the centrifugal fan 2 for control.

[0033] b. Heat exchange function

[0034] The main components for completing the heat exchange function include the evaporator coil 3. The air in the storage and the refrigerant complete the heat exchange on the coil. The design of the coil must have a high heat exchange efficiency and meet the load requirements in the cold storage.

[0035] c. Air supply function

[0036] The main components for completing the air supply function include the centrifugal fan 2. The centrifugal fan 2 draws the air in the cold storage into the fan through the return air panel, exchanges heat on the evaporating coil 3, and then sends it to the top of the cold storage through the shelf interlayer, and then supplies air through the adjustable air outlet.

[0037] d. Defrost function

[0038] Cold storage with a temperature below 0℃ needs to defrost the air cooler coil. Defrosting can be divided into hot air defrosting and electric defrosting. For the fruit and vegetable storage air cooler, hot air defrosting and electric defrosting are used.

[0039] a) Hot air defrosting

[0040] The superheated steam is throttled and then enters the coil for defrosting. The gas after defrosting is controlled to remain in the superheated area and can directly enter the compressor inlet for compression again. An electronic expansion valve is installed on the hot gas defrost pipeline on the compression condensing unit side to control the gas flow of hot gas defrosting, which can more accurately control the temperature and time of hot gas defrosting.

[0041] The defrost solenoid valve is interlocked with the electronic expansion valve and the air cooler.

[0042] b) Electric defrosting

[0043] Electric defrost mainly uses electric heating tubes to defrost, set timed defrost, and set temperature protection and time protection.

[0044] The defrost electric heater is interlocked with the liquid supply solenoid valve 7, the electronic expansion valve 4 and the air cooler.

Claims

1. A marine compact air cooler, characterized in that: The compact air cooler integrates valve plate, throttling, heat exchange, air supply and defrost functions into one, including an air cooler and a shelf. The air cooler is integrated at the bottom of the shelf and connected to the shelf through a hanger. The wall side of the shelf fixed to the wall is made into a hollow interlayer, which serves as a supporting column of the shelf and also as an air supply channel for the air cooler. The air cooler sends cold air to the air supply interlayer of the adjustable air outlet through the air supply interlayer of the shelf, diffuses it to the shelf area through the adjustable air outlet, and returns to the air cooler again at the bottom return air outlet, forming an upward and downward air flow circulation.

2. The marine compact air cooler according to claim 1, characterized in that: The return air surface of the air cooler is arranged at the bottom of the air cooler, and the bottom of the frame of the air cooler is separated from the ground by a certain distance for return air; the air outlet of the air cooler is arranged at the back of the air cooler, and the air is directly sent to the supply air interlayer when the air cooler is running.

3. The marine compact air cooler according to claim 1, characterized in that: The air cooler consists of a frame, a centrifugal fan, an evaporating coil, an electronic expansion valve, a thermal expansion valve, a liquid supply solenoid valve, and a junction box. The evaporating coil is installed at the bottom of the air cooler frame, and the centrifugal fan is installed on the top of the evaporating coil, forming an angle of 30° with the air outlet.

4. The marine compact air cooler according to claim 3, characterized in that: The electronic expansion valve, liquid supply solenoid valve and thermal expansion valve are used to realize the throttling function of the air cooler. The electronic expansion valve automatically adjusts its opening according to the temperature in the cold storage to maintain the temperature of the cold storage, while the liquid supply solenoid valve and thermal expansion valve serve as backup branches of the electronic expansion valve. The electronic expansion valve is interlocked with the centrifugal fan for control.

5. The marine compact air cooler according to claim 3, characterized in that: The evaporator coil is used to realize the heat exchange function. The air in the storage and the refrigerant complete the heat exchange on the evaporator coil, and the heat exchange efficiency of the evaporator coil can meet the load requirements in the cold storage.

6. The marine compact air cooler according to claim 3, characterized in that: The centrifugal fan is used to realize the air supply function. The centrifugal fan draws the gas in the cold storage into the fan through the return air panel, exchanges heat on the evaporating coil, and then sends it to the top of the cold storage through the shelf interlayer, and then supplies air through the adjustable air outlet.

7. The marine compact air cooler according to claim 3, characterized in that: The evaporator coil is also connected to the defrost system. The defrost system is used in cold storage where the storage temperature is below ℃ and the evaporator coil needs to be defrosted.

8. The marine compact air cooler according to claim 7, characterized in that: The defrost system is a hot gas defrost system or an electric defrost system.

9. The marine compact air cooler according to claim 8, characterized in that: The hot gas defrost system uses superheated steam to throttle and then enter the evaporator coil for defrosting. The gas after defrosting is controlled to remain in the superheated area and directly enter the compressor inlet for re-compression. An electronic expansion valve is installed on the hot gas defrost pipeline on the compression condensing unit side to control the gas flow of hot gas defrosting, so as to more accurately control the temperature and time of hot gas defrosting.

10. The marine compact air cooler according to claim 8, characterized in that: The electric defrost system uses electric heating tubes for defrosting, with timed defrost settings, temperature protection and time protection settings; the electric heating tubes are interlocked with the liquid supply solenoid valve, electronic expansion valve and air cooler.

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