A complete set of container-type cold energy refrigerated transport box

Abstract

The present invention relates to a complete set of container-type cold energy refrigerated transport boxes, comprising a refrigerated transport box, wherein a first heat exchange unit and a second heat exchange unit are arranged on the outside of the refrigerated transport box; the first heat exchange unit and the second heat exchange unit are connected to the compressor through a first bypass and a second bypass respectively; the compressor is connected to the condenser; the condenser is connected to the first heat exchange unit and the second heat exchange unit through a first flow path and a second flow path respectively; the first bypass and the second bypass have different lengths; the first flow path and the second flow path have different lengths; a three-way valve is arranged between the condenser and the first flow path and the second flow path. The second heat exchange unit and the first heat exchange unit are arranged on the top and side of the refrigerated transport box, and bypasses and flow paths of different lengths are connected to the compressor and the condenser; so that the refrigerant circulation time is different, thereby making the cooling time of the second heat exchange unit and the first heat exchange unit different. This design can realize multi-mode operation, so that the heat source is in the best working condition and remains stable.

Description

Technical Field

[0001] The present invention relates to a complete set of transport boxes, in particular to a complete set of container-type cold energy refrigerated transport boxes, belonging to the technical field of refrigerated transport equipment. Background Art

[0002] In the refrigerated transportation process of food in the existing technology, refrigerated containers or refrigerated trucks are usually used for transshipment. For food that needs to be refrigerated, how to reduce the dry loss of food is a major difficulty that needs to be overcome in this field. Excessive dry loss means that the food will lose its fresh and plump appearance and appear to wilt significantly; and for frozen fish, it will oxidatively decay, the surface will turn yellow-brown, and the nutritional value will be reduced. Generally speaking, the reasons for dry loss are as follows: first, the freezing or cooling time is too long, that is, after the food enters, the temperature cannot be lowered to the set temperature in a short time, resulting in uneven temperature and humidity in the warehouse, and large fluctuations; second, due to the first defect, personnel need to frequently enter and exit the warehouse to stack the food, coat the food with ice, etc., resulting in a large heat flow; third, the external heat pump equipment will generate heat when it works and transfer it to the warehouse, causing the temperature in the warehouse to rise, and the cooling effect of the heat pump equipment itself cannot be well balanced with this point, resulting in a large temperature fluctuation in the warehouse. To address this issue, existing technologies typically use temperature sensors and fan speed control to adjust the incoming airflow and thus adaptively adjust the temperature. However, this approach has the drawback that simply changing the air speed does not change the cooling temperature of the heat exchanger, resulting in still high energy consumption for the heat pump. The heat pump itself generates heat, affecting the internal temperature, causing a significant temperature rise, and still failing to address the problem of excessive dry power consumption. Therefore, it is necessary to design a transport device that can reasonably control the rate and magnitude of temperature change. Summary of the Invention

[0003] In view of this, the present invention provides a complete set of container-type cold energy refrigerated transport boxes to overcome the defects in the prior art. The temperature change has a gradient, which reduces the temperature fluctuation amplitude in the warehouse, reasonably controls the temperature rise and fall range, reasonably controls the heat source working mode, and reduces the frequency of manual warehousing operations.

[0004] A complete set of container-type cold energy refrigerated transport box devices includes a refrigerated transport box, wherein a first heat exchange unit and a second heat exchange unit are disposed on the outside of the refrigerated transport box; the first heat exchange unit and the second heat exchange unit are connected to a compressor through a first bypass and a second bypass respectively; the compressor is connected to a condenser; the condenser is connected to the first heat exchange unit and the second heat exchange unit through a first flow path and a second flow path respectively; the first bypass and the second bypass are of different lengths; the first flow path and the second flow path are of different lengths; a three-way valve is disposed between the condenser and the first flow path and the second flow path;

[0005] A water collecting pan is provided at the bottom of the first heat exchange unit and the second heat exchange unit; a water collecting chamber is provided on the outside of the refrigerated transport box; a pump body is provided in the water collecting box; a plurality of stacks are arranged in the refrigerated transport box; a water distribution pipe is provided on the stack; the water distribution pipe is connected to the pump body; a temperature detection unit is provided inside the water collecting chamber and outside the compressor and / or condenser respectively; the temperature detection unit is connected to the on-off valve.

[0006] Preferably, a first air-conditioning chassis and a second air-conditioning chassis are provided on the upper side of the refrigerated transport box; the first heat exchange unit and the second heat exchange unit are respectively arranged in the first air-conditioning chassis and the second air-conditioning chassis; the first heat exchange unit and the second heat exchange unit are both evaporators.

[0007] Preferably, the first air-conditioning case is arranged on the side of the refrigerated transport box; the second air-conditioning case is arranged on the top of the refrigerated transport box; the compressor and the condenser are arranged on one side of the refrigerated transport box and are inside the first air-conditioning case; the first bypass and the second bypass are refrigerant return pipes; the first bypass is connected to the side of the first heat release unit close to the compressor; the second bypass is connected to the side of the second heat release unit close to the compressor; the first flow path is connected to the side of the first air-conditioning case close to the condenser; the second flow path is connected to the side of the second air-conditioning case close to the condenser.

[0008] Preferably, the total length of the heat exchange tubes in the second heat exchange unit is greater than the total length of the heat exchange tubes in the first heat exchange unit; the side of the first air-conditioning case and the side of the second air-conditioning case are provided with a first air outlet and a second air outlet; a first blower is provided on one side of the first heat exchange unit, and is facing the first air outlet; a second blower is provided on the other side opposite to the second air outlet.

[0009] Preferably, the blower is connected to a frequency converter; the frequency converter is connected to a temperature detection unit; and the temperature detection unit is a temperature sensor.

[0010] Preferably, the water receiving tray includes a first water receiving tray and a second water receiving tray, and is respectively arranged at the bottom of the first air-conditioning case and the second air-conditioning case; the first water receiving tray is connected to the water collecting chamber through a water inlet pipe; the first water receiving tray is located at the bottom of the first air-conditioning case; the second water receiving tray is located on the inner side of the second air outlet.

[0011] Preferably, the second water receiving tray is located between the second blower and the second air outlet; the second air outlet is provided with an air inlet pipe and is connected to the refrigerated transport box; the second water receiving tray is connected to the water collecting tank through a water inlet pipe.

[0012] Preferably, the water collecting tank is arranged at the bottom of the first water receiving tray; the second water receiving tray is connected to the water collecting tank through a pipeline; the water distribution pipe is relatively inclined and arranged on the upper side of each stack; a liquid level sensor is provided in the water collecting tank; the water collecting tank is connected to the water storage container; the water collecting tank is connected to a water outlet main pipe; the water outlet main pipe is horizontally distributed in the refrigerated transport box; the water outlet main pipe is connected to a vertically arranged water outlet branch pipe; the water outlet branch pipe is provided with water outlet holes; the water outlet holes correspond one-to-one to the water distribution pipes.

[0013] Preferably, the water storage container is arranged on a mobile vehicle; a pump body is arranged in the water storage container; end covers are arranged on the top and sides of the refrigerated transport box; and the edges of the refrigerated transport box extend vertically and horizontally to form end cover supports.

[0014] Preferably, the end cover covers the surface of the first heat exchange unit and the second heat exchange unit; the support is provided with a receiving seat for receiving the refrigerated transport box on the upper side or the side; the refrigerated transport box is a container body or a vehicle-mounted refrigerated box.

[0015] The present invention has the following beneficial effects: by arranging the second heat exchange unit and the first heat exchange unit on the top and side of the refrigerated transport box, and connecting them to the compressor and condenser through bypasses and flow paths of different lengths, the refrigerant circulation time is different, thereby making the cooling time of the second heat exchange unit and the first heat exchange unit different. This design can achieve the following modes:

[0016] 1) Before transportation, when the temperature inside the cabinet needs to be quickly lowered, the circulation bypass and flow path of the second heat exchange unit and the first heat exchange unit can be opened simultaneously. The condenser and compressor simultaneously compress and cool the refrigerant in the two bypass and flow paths, and then return the refrigerant to the first and second heat exchange units. After the goods are placed in the cabinet, the temperature inside the cabinet can be quickly lowered to the predetermined temperature, avoiding the problem of food drying out due to a low cooling rate;

[0017] 2) During transportation, since the cabinet is kept at a low temperature, if the dual bypass and flow paths are kept open at the same time, the cabinet temperature will easily drop too low and energy consumption will be extremely high. At this time, the operating temperature of the condensing end and the compression end (condenser and compressor) is obtained through temperature sensors. The preset parameters are used to determine the heat flow impact at the current temperature. One of the bypass and flow paths is selectively closed to reduce the workload of the condensing end and the compression end. While the temperature is being lowered, the single bypass and flow path is still operating, but the cooling range is reduced due to the reduction in refrigerant. This can prevent the cabinet temperature from being too low. It also avoids the problem of a large temperature difference between the inside and outside of the cabinet.

[0018] 3) Also during the transportation process, since the two bypasses and the flow path have different lengths, the refrigerant's running cycle in the two bypasses and the flow path is of different lengths. That is to say, the cooling rates of the first heat exchange unit and the second heat exchange unit are different. The first heat exchange unit and the second heat exchange unit can be flexibly selected to be combined and operated or to be operated separately according to the temperature conditions in the cabinet. When operating separately, the two heat exchange units can provide different cooling gradients, which can be adjusted, cross-used or integrated according to parameters such as the operating temperature of the condensing end and the compression end, the outdoor temperature, the insulation capacity of the refrigerated transport box, and the energy consumption requirements.

[0019] For example, when the external ambient temperature is low, the refrigerant circuit of the second heat exchange unit is much longer than that of the first heat exchange unit; therefore, the cooling effect of the first heat exchange unit is stronger. At this time, due to the low external ambient temperature, the internal cooling capacity requirement is lower, so the second heat exchange unit can be turned on alone. At this time, the condensing end and the compression end only work for the second heat exchange unit, which greatly reduces the load.

[0020] When the external ambient temperature is high, in order to maintain the temperature environment inside the warehouse, while avoiding the condensing end and the compression end working in dual flow paths and generating a large amount of heat, the first heat exchange unit with stronger cooling capacity is turned on alone. This can meet the requirement of maintaining the temperature inside the warehouse while the condensing end and the compression end are not working at full load and the temperature is lower. In this way, there is no need to arrange complex refrigerant flow control valves in the heat source to control the circulation of refrigerant, and a more reasonable temperature gradient can be obtained, making the adjustment process more reliable, stable and energy-saving.

[0021] 4) A water receiving tray is arranged on the lower side of the first heat exchange unit and the second heat exchange unit, and the water receiving tray is connected to the water collecting tank; the water collecting tank can not only utilize the water source inside the water storage tank, but also receive the condensed water generated at the heat exchange unit position, and transport it to the water distribution pipe through the pump body. The water distribution pipe is evenly sprinkled on the surface of each stacked food, and then enters the low-temperature cooling to form ice. In this way, there is no need for manual entry to sprinkle water, which reduces heat flow fluctuations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 It is a front view of the present invention.

[0024] Figure 3 Schematic diagram of the internal structure of the first heat exchange unit.

[0025] Figure 4 It is a schematic diagram of the principle of the present invention.

[0026] Figure 5 Schematic diagram of the internal structure of a refrigerated transport box.

[0027] Figure 6 This is a structural diagram of the refrigerated transport box from another perspective.

[0028] Figure 7 Schematic diagram of the internal structure of the second thermal unit

[0029] In the figure: 1 is a refrigerated transport box, 2 is a first heat exchange unit, 3 is a second heat exchange unit, 4 is a first bypass, 5 is a second bypass, 6 is a compressor, 7 is a condenser, 8 is a first flow path, 9 is a second flow path, 10 is a three-way valve, 11 is a water collecting tank, 12 is a pump body, 13 is a palletizer, 14 is a water distribution pipe, 15 is a first air outlet, 16 is a second air outlet, 17 is a first blower, 18 is a second blower, 19 is a first water receiving tray, 20 is a second water receiving tray, 21 is an air inlet pipe, 22 is a liquid level sensor, 23 is a water outlet main pipe, 24 is a water outlet branch pipe, 25 is an end cover, 26 is an end cover support, and 27 is a receiving seat. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] The terms used herein, including technical and scientific terms, have the same meaning as those commonly understood by those skilled in the art, unless otherwise defined. It should be understood that the terms defined in commonly used dictionaries have the same meaning as those in the prior art.

[0032] See also Figures 1-6

[0033] A complete set of container-type cold energy refrigerated transport boxes includes a refrigerated transport box 1, wherein a first heat exchange unit 2 and a second heat exchange unit 3 are provided on the outside of the refrigerated transport box 1; the first heat exchange unit 2 and the second heat exchange unit 3 are connected to a compressor 6 through a first bypass 4 and a second bypass 5, respectively; the compressor 6 is connected to a condenser 7; the condenser 7 is connected to the first heat exchange unit 2 and the second heat exchange unit 3 through a first flow path 8 and a second flow path 9, respectively; the first bypass 8 and the second bypass 9 have different lengths; the first flow path 8 and the second flow path 9 have different lengths; a three-way valve 10 is provided between the condenser 7 and the first flow path 8 and the second flow path 9;

[0034] The first heat exchange unit 2 and the second heat exchange unit 3 are provided with a water receiving pan at the bottom; a water collecting chamber 11 is provided on the outside of the refrigerated transport box 1; a pump body 12 is provided in the water collecting box 11; a plurality of stacks 13 are provided in the refrigerated transport box 1; a water distribution pipe 14 is provided on the stack 13; the water distribution pipe 14 is connected to the pump body 12; temperature detection units are respectively provided inside the water collecting chamber and outside the compressor and / or condenser; the temperature detection unit is connected to the three-way valve 10.

[0035] Furthermore, the refrigerated transport box 1 is provided with a first air-conditioning box and a second air-conditioning box; the first heat exchange unit and the second heat exchange unit are respectively arranged in the first air-conditioning box and the second air-conditioning box; the first heat exchange unit 2 and the second heat exchange unit 3 are both evaporators.

[0036] In this embodiment: two bypasses and flow paths are used to form the refrigerant circulation of the first heat exchange unit and the second heat exchange unit; the first heat exchange unit and the second heat exchange unit are connected by a common compressor 6 and a condenser 7 to perform refrigerant compression and condensation work; in the prior art, the compressor 6 and the condenser 7 with dual working areas are known mature products. Taking the condenser as an example, it is only necessary to set up two condensers inside and provide condensing fins to exchange heat with the refrigerant and liquefy it.

[0037] The two bypass and flow paths allow the first and second heat exchange units to achieve different cooling effects and rates. The compressor and condenser can process refrigerant for both bypass and flow paths simultaneously, or for a single bypass and flow path, depending on the needs, thereby optimally managing the controller workload.

[0038] Furthermore, the first air-conditioning chassis is arranged on the side of the refrigerated transport box 1; the second air-conditioning chassis is arranged on the top of the refrigerated transport box 1; the compressor 6 and the condenser 7 are arranged on the side of the refrigerated transport box 1 and are in the first air-conditioning chassis; the first bypass and the second bypass are refrigerant return pipes; the first bypass is connected to the side of the first heat release unit close to the compressor; the second bypass is connected to the side of the second heat release unit close to the compressor; the first flow path is connected to the side of the first air-conditioning chassis close to the condenser; the second flow path is connected to the side of the second air-conditioning chassis close to the condenser.

[0039] Furthermore, the total length of the heat exchange tubes in the second heat exchange unit is greater than the total length of the heat exchange tubes in the first heat exchange unit; the side of the first air-conditioning case and the side of the second air-conditioning case are provided with a first air outlet 15 and a second air outlet 16; a first blower 17 is provided on one side of the first heat exchange unit, and is opposite to the first air outlet 15; a second blower 18 is provided on the other side of the second air outlet 16.

[0040] Furthermore, the first blower 17 and the second blower 18 are connected to a frequency converter; the frequency converter is connected to a temperature detection unit; and the temperature detection unit is a temperature sensor.

[0041] Furthermore, the water receiving tray includes a first water receiving tray 19 and a second water receiving tray 20, which are respectively arranged at the bottom of the first air-conditioning case and the second air-conditioning case; the first water receiving tray 19 is connected to the water collecting chamber through a water inlet pipe; the first water receiving tray 19 is located at the bottom of the first air-conditioning case; the second water receiving tray 20 is located on the inner side of the second air outlet 16.

[0042] Furthermore, the second water receiving tray 20 is located between the second blower 18 and the second air outlet 16; the second air outlet 16 is provided with an air inlet pipe 21 and is connected to the refrigerated transport box 1; the second water receiving tray 20 is connected to the water collecting box 11 through a water inlet pipe.

[0043] In this embodiment, the first heat exchange unit uses the first blower 17 to deliver cold air to the refrigerated transport box 1; and the second heat exchange unit uses the second blower 18 to deliver cold air to the refrigerated transport box 1; during the operation of the second heat exchange unit, cold air will enter the refrigerated transport box 1 through the air inlet pipe 21, and the condensed water will drip vertically downward into the second water receiving tray 20, which can also reduce the water content of the gas and prevent the condensed water from dripping onto the ground of the refrigerated transport box 1 and condensing into ice cubes.

[0044] Furthermore, the water collecting tank 11 is arranged at the bottom of the first water receiving tray 20; the second water receiving tray 20 is connected to the water collecting tank 11 through a pipeline; the water distribution pipe 14 is relatively inclined and arranged on the upper side of each stack 13; a liquid level sensor 22 is arranged in the water collecting tank 11; the water collecting tank 11 is connected to the water storage container; the water collecting tank 11 is connected to a water outlet main pipe 23; the water outlet main pipe 23 is horizontally distributed in the refrigerated transport box 1; the water outlet main pipe 23 is connected to a vertically arranged water outlet branch pipe 24; the water outlet branch pipe 24 is provided with a water outlet hole; the water outlet branch pipe 24 corresponds one to one with the water distribution pipe.

[0045] Due to the presence of the liquid level sensor 22, the background can judge the change of the liquid level in the water collecting tank 11, judge the water output according to the change of the liquid level, and infer the thickness and time of ice formation in turn.

[0046] Furthermore, the water storage container is arranged on a mobile vehicle; a pump body is arranged in the water storage container; end covers 25 are arranged on the top and sides of the refrigerated transport box; and the edges of the refrigerated transport box extend vertically and horizontally to form end cover supports 26.

[0047] Furthermore, the end cover covers the surface of the first heat exchange unit and the second heat exchange unit; the support is provided with a receiving seat 27 for receiving the refrigerated transport box on the upper side or the side; the refrigerated transport box is a container body or a vehicle-mounted refrigerated box.

[0048] Specifically, in this embodiment, the refrigerated transport box can be used as a container; by adding end covers to the first heat exchange unit and the second heat exchange unit, and extending the edges into end cover supports 26 and receiving seats 27, other containers can be received on the upper part or side of the refrigerated transport box; at the same time, due to the protection of the end covers, the first heat exchange unit and the second heat exchange unit will not be squeezed.

[0049] Finally, it should be noted that the above embodiments are only intended to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A complete set of container-type cold energy refrigerated transport boxes, including a refrigerated transport box, characterized in that: A first heat exchange unit and a second heat exchange unit are provided on the outside of the refrigerated transport box; the first heat exchange unit and the second heat exchange unit are connected to the compressor through a first bypass and a second bypass respectively; the compressor is connected to the condenser; the condenser is connected to the first heat exchange unit and the second heat exchange unit through a first flow path and a second flow path respectively; the first bypass and the second bypass have different lengths; the first flow path and the second flow path have different lengths; a three-way valve is provided between the condenser and the first flow path and the second flow path; The first and second heat exchange units are provided with water receiving pans at the bottom; a water collecting chamber is provided on the outside of the refrigerated transport box; a pump body is provided in the water collecting chamber; a plurality of stacks are provided in the refrigerated transport box; a water distribution pipe is provided on the stack; the water distribution pipe is connected to the pump body; a temperature detection unit is provided inside the water collecting chamber and outside the compressor and / or condenser; the temperature detection unit is connected to the three-way valve; The refrigerated transport box is provided with a first air-conditioning box and a second air-conditioning box; the first heat exchange unit and the second heat exchange unit are respectively provided in the first air-conditioning box and the second air-conditioning box; the first heat exchange unit and the second heat exchange unit are both evaporators; The first air-conditioning case is arranged on the side of the refrigerated transport box; the second air-conditioning case is arranged on the top of the refrigerated transport box; the compressor and condenser are arranged on one side of the refrigerated transport box and are located inside the first air-conditioning case; the first bypass and the second bypass are refrigerant return pipes; the first bypass is connected to the side of the first heat release unit close to the compressor; the second bypass is connected to the side of the second heat release unit close to the compressor; the first flow path is connected to the side of the first air-conditioning case close to the condenser; the second flow path is connected to the side of the second air-conditioning case close to the condenser; The total length of the heat exchange tubes in the second heat exchange unit is greater than the total length of the heat exchange tubes in the first heat exchange unit; the side of the first air-conditioning case and the side of the second air-conditioning case are provided with a first air outlet and a second air outlet; a first blower is provided on one side of the first heat exchange unit and is facing the first air outlet; a second blower is provided on the other side opposite to the second air outlet.

2. A complete set of container-type cold energy refrigerated transport box according to claim 1, characterized in that: The blower is connected to the frequency converter; the frequency converter is connected to the temperature detection unit; and the temperature detection unit is a temperature sensor.

3. The complete set of container-type cold energy refrigerated transport box according to claim 2, characterized in that: The water receiving tray includes a first water receiving tray and a second water receiving tray, which are respectively arranged at the bottom of the first air-conditioning case and the second air-conditioning case; the first water receiving tray is connected to the water collection chamber through a water diversion pipe; the first water receiving tray is located at the bottom of the first air-conditioning case; the second water receiving tray is located on the inner side of the second air outlet.

4. A complete set of container-type cold energy refrigerated transport box according to claim 3, characterized in that: The second water receiving tray is located between the second blower and the second air outlet; the second air outlet is provided with an air inlet pipe, which is connected to the refrigerated transport box; the second water receiving tray is connected to the water collecting box through a water inlet pipe.

5. The complete set of container-type cold energy refrigerated transport box according to claim 4, characterized in that: The water collecting tank is arranged at the bottom of the first water receiving tray; the second water receiving tray is connected to the water collecting tank through a pipeline; the water distribution pipe is relatively inclined and arranged on the upper side of each stack; a liquid level sensor is arranged in the water collecting tank; the water collecting tank is connected to the water storage container; the water collecting tank is connected to a water outlet main pipe; the water outlet main pipe is horizontally distributed in the refrigerated transport box; the water outlet main pipe is connected to a vertically arranged water outlet branch pipe; the water outlet branch pipe is provided with a water outlet hole; the water outlet branch pipe corresponds to the water distribution pipe one by one.

6. The complete set of container-type cold energy refrigerated transport box according to claim 5, characterized in that: The water storage container is arranged on a mobile vehicle; a pump body is arranged in the water storage container; end covers are arranged on the top and sides of the refrigerated transport box; the edges of the refrigerated transport box extend vertically and horizontally to form end cover supports.

7. The complete set of container-type cold energy refrigerated transport box according to claim 6, characterized in that: The end cover covers the surface of the first heat exchange unit and the second heat exchange unit; the support is provided with a receiving seat for receiving the refrigerated transport box on the upper side or the side; the refrigerated transport box is a container body or a vehicle-mounted refrigerated box.

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