WO2022228570A1

WO2022228570A1 - Unit distribution box and cold chain system having same

Info

Publication number: WO2022228570A1
Application number: PCT/CN2022/090555
Authority: WO
Inventors: 陈金红; 李北军
Original assignee: 浙江雪波蓝科技有限公司
Priority date: 2021-04-30
Filing date: 2022-04-29
Publication date: 2022-11-03

Abstract

A unit distribution box and a cold chain system having same, the unit distribution box comprising: a storage room; a cold storage assembly, the cold storage assembly comprising a cold storage box and a cold storage agent which is located in the cold storage box; a cold supply assembly, the cold supply assembly comprising a cold supply pipe that communicates with the cold storage box, and a cold supply pump that drives the cold storage agent to circulate and flow in the cold storage box and the cold supply pipe, a part of the cold supply pipe being located at the top of the storage room; and an electronic control unit, which is communicatively connected with the cold supply pump. In the present invention, the cold supply pump drives the cold storage agent in a liquid state to circulate and flow to the storage room for supplying cold, and the cold supply pump only needs to work for a short time, so that the storage room may be kept at a set temperature for a long time.

Description

Unit distribution box and cold chain system having the same

technical field

The invention relates to the technical field of logistics distribution, in particular to a unit distribution box and a cold chain system having the same.

Background technique

The transportation of fresh agricultural products accounts for an increasing proportion in logistics and distribution. Because of the need for refrigeration or freezing during transportation, it is generally referred to as cold chain logistics.

In the prior art, the refrigerated truck is cooled by the refrigeration unit, and the fan blows the cold air to the storage room. As the cold storage box is bumped during transportation, the reliability of the fan is poor, and the temperature control is unreliable, which may damage the transported products; During the process, the fan consumes a lot of power and charges the battery slowly; and the fan is installed in the air duct, which generates heat and consumes cooling capacity during operation.

SUMMARY OF THE INVENTION

For solving one of the above-mentioned technical problems, the present invention adopts the following technical solutions:

A unit distribution box includes: a storage room; a cool storage assembly, the cool storage assembly including a cool storage tank and a cool storage agent located in the cool storage tank; A cooling supply pipe, a cooling supply pump that drives the cooling storage medium to circulate in the cooling storage tank and the cooling supplying pipe; part of the cooling supply pipe is located on the top of the storage room; an electric control unit, which is connected with the cooling supply Cold pump communication connection.

A cool storage assembly, comprising: a cool storage tank; a cool storage agent located in the cool storage tank; a cool storage pipe pierced in the cool storage agent and passing through a cool storage device, and an inlet and an outlet of the cool storage pipe are exposed outside the cool storage box; A temperature measurement assembly, the temperature measurement assembly includes at least one temperature sensor disposed along the radial direction of the cold storage tube and spaced from the cold storage tube, or the temperature measurement assembly includes a temperature sensor disposed around any of the cold storage devices and connected to the cold storage device at least one temperature sensor at intervals; an electronic control unit, connected in communication with the temperature sensor, and at least one temperature threshold value To corresponding to each of the temperature sensors is set in the electronic control unit.

A cold storage assembly, which is different from the above cold storage assembly in that the temperature measurement assembly includes at least two temperature sensors, and the distances from the at least two temperature sensors to the cold storage pipe along the radial direction of the cold storage pipe are different, or along the The distance between two adjacent temperature sensors in the extending direction of the regenerator tube is not less than the first distance threshold.

A cold storage assembly is different from the above cold storage assembly in that it further includes a cold storage device immersed in the cold storage agent, a cold storage pipe is penetrated in the cold storage agent and passes through the cold storage device, and at least two temperature sensors are connected to the cold storage device. The distances are different; the electronic control unit is connected in communication with the temperature sensor. Or, at least two cold storage devices are included, and at least two temperature sensors are respectively arranged around different cold storage devices; and an electronic control unit is connected in communication with the temperature sensors.

Description of drawings

1 is a schematic diagram of a cold storage assembly according to a preferred embodiment of the present invention;

2 is a schematic diagram of a cold storage assembly according to another preferred embodiment of the present invention;

3 is a schematic diagram of a cold storage assembly according to another preferred embodiment of the present invention;

Fig. 4 is the perspective view of the cold storage device in Fig. 3;

FIG. 5 is a schematic view of FIG. 4 after being cut along the axial direction perpendicular to the inner tube 53;

Fig. 6 is a schematic diagram of the phase transition sequence of each point in the cold storage device of Fig. 5;

7 is a cross-sectional view of FIG. 5 along the A-A direction;

FIG. 8 is a schematic view of the cold storage device according to another embodiment of the present invention from the perspective of FIG. 6;

9 is a schematic diagram of a cold storage assembly according to another preferred embodiment of the present invention;

Figure 10 is an enlarged view of part B in Figure 9;

11 is a schematic diagram of the positional relationship between a temperature sensor and a cold storage device in an embodiment in another embodiment of the present invention;

12 is a schematic diagram of the positional relationship between a temperature sensor and a cold storage device in another embodiment of the present invention;

13 is a schematic diagram of a cold storage assembly according to another preferred embodiment of the present invention;

14 is a schematic diagram of a cold storage assembly according to another preferred embodiment of the present invention;

Fig. 15 is a schematic diagram of a cooling machine in a preferred embodiment of the present invention;

Figure 16 is an enlarged view of part C in Figure 15;

17 is a schematic diagram of a unit distribution box in a preferred embodiment of the present invention;

Figure 18 is a schematic diagram of the internal cold storage pipe fittings shown in dashed lines in Figure 17;

FIG. 19 is a cross-sectional view of FIG. 18 along the D-D direction;

20 is a flow chart of a cold storage method according to a preferred embodiment of the present invention;

21 is a perspective view of a cold chain box of a preferred embodiment of the present invention;

Figure 22 is a schematic diagram of the cold chain box in Figure 21 after removing the thermal insulation door;

23 is a schematic diagram of a leak-proof cooling structure according to a preferred embodiment of the present invention;

Fig. 24 is a partial enlarged view of region A in Fig. 23;

Fig. 25 is a partial enlarged view of region B in Fig. 23;

Figure 26 is the exploded view method of Figure 23;

27 is a schematic diagram of a leak-proof cooling structure according to another embodiment of the present invention;

28 is a perspective view of a cold chain box according to another embodiment of the present invention;

FIG. 29 is a schematic diagram of the anti-leakage cooling structure in a contracted state according to another embodiment of the present invention;

FIG. 30 is a schematic view of the anti-leakage cooling structure shown in FIG. 29 in a deployed state.

Detailed ways

The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. In each figure, some dimensions of structures or parts are exaggerated relative to other structures or parts for convenience of illustration, and thus, are only used to illustrate the basic structure of the subject matter of the present invention. For the convenience of description, below and above are defined according to the orientation of the product in actual use.

As shown in FIGS. 1 to 14 , the cool storage assembly 100 of the present invention includes a cool storage tank 1 with a thermal insulation function, a cool storage agent 11 located in the cool storage tank 1 , and a cool storage pipe 3 penetrated in the cool storage agent 11 , The inlet 31 and the outlet 32 of the regenerator tube 3 are exposed to the outside of the regenerator 1 . Specifically, the inlet 31 and the outlet 32 are arranged on the regenerator 1 or protrude out of the regenerator 1 . , which is convenient for docking with the cooling unit or the cooling unit from the outside.

When the cooling medium flows through the cooling storage tube 3, the cooling medium having a lower temperature than the cooling medium 11 provides cooling capacity to the cooling storage medium 11, and stores the cooling capacity in the cooling storage medium 11. This process is called cooling storage. The cooling medium may be the cooling medium of the refrigeration unit 22, or may be the cooling medium provided by another cooling storage assembly 100 with higher power. Preferably, a plurality of cooling fins are provided on the outside of the cold storage tube 3, which increases the contact area with the cold storage agent 11 and can shorten the cold storage time.

Further, the cool storage assembly 100 further includes at least one cool storage device 5 immersed in the cool storage agent 11 , the cool storage device 5 is sealed with a cool storage material, the cool storage material is different from the cool storage agent 11 , and the two are Both can store cold energy. Preferably, the freezing point of the cool storage material can be higher or lower than the cool storage agent 11, and two-stage cool storage can be achieved.

In addition, the cool storage tube 3 may or may not pass through the cool storage device 5 .

In one type of embodiment, the cool storage device 5 includes a housing, a cool storage material sealed in the housing, and the cool storage pipe 3 is passed through the housing.

The housing has a cool storage cavity 52 , and the cool storage material is stored in the cool storage cavity 52 . The cool storage material of the present invention is preferably a phase change material. The added amount of the cool storage material is: when the cool storage material is liquid, the volume is not greater than 80% of the volume of the cool storage cavity 52, so as to ensure that the cool storage device 5 will not be deformed or deformed due to the increase in volume when the cool storage material undergoes a phase change. rupture.

The cooling medium flows in from the inlet 31 of the cool storage tube 3 , and then flows out from the outlet 32 of the cool storage tube 3 , and exchanges heat with the cool storage material and the cool storage agent 11 during the flow. Preferably, the inlet 31 of the cool storage tube 3 is connected to the bottom of the cool storage device 5, the outlet 32 of the cool storage tube 3 is connected to the top of the cool storage device 5, and the cooling capacity is supplied from bottom to top, so that the cool storage material at the bottom first obtains the cooling capacity generation phase Change, the liquid cold storage material is located above the solid cold storage material to avoid deformation or rupture of the cold storage device 5 . More preferably, the cold storage tube 3 is arranged in a spiral or serpentine shape from bottom to top, which enlarges its heat exchange area.

In another type of embodiment, the cold storage device 5 includes a casing 51 , a cold storage cavity 52 surrounded by the casing 51 , and an inner tube 53 passing through the casing 51 and passing through the cold storage cavity 52 , and the cold storage material is located in the cold storage cavity 52 . The cold storage pipe 3 is inserted in the inner pipe, and the cold storage pipe 3 is not in direct contact with the cold storage material at this time, which can prevent corrosion by the cold storage material and expand the selection range of the cold storage material. Preferably, the regenerator tube 3 is in close contact with the inner tube 53, so that the cold energy of the cooling medium is directly transferred to the inner tube through the regenerator tube 3, and then transferred from the inner tube to the regenerator material, and the heat is transferred through the liquid-solid-solid-solid- Solid-liquid transfer, small thermal resistance, small heat loss, and fast heat exchange.

As shown in FIGS. 3 to 8 , the housing 51 includes an outer tube 511 and end caps 512 closing both ends of the outer tube 511 . The end cover 512 is provided with a through hole 5121 through which the inner tube 53 passes. At the same time, the end cover 512 and/or the outer tube 511 are provided with an injection port (not shown) for injecting the cold storage material into the cold storage cavity 52. After the cold storage material is injected, the injection port is blocked and sealed by the sealing member 5122. . In the cold storage device 5 of the present invention, the end cover 512 can also be removed, and the remaining part constitutes a heat conduction structure.

Further, the cold storage device 5 further includes a heat conducting sheet 54 located in the cold storage cavity 52 , and the heat conducting sheet 54 is in contact with at least one of the outer casing 51 or the inner tube 53 . The heat transfer sheet 54 includes a heat transfer sheet 541 that is in contact with the inner tube 53 and the outer casing 51 . Rapid heat exchange is performed, so that the inner tube 53 and the outer shell 51 perform heat exchange with the cold storage material in the cold storage chamber 52 from the inner and outer sides, respectively.

The thickness of the heat transfer sheet 541 is not less than 1.5mm, preferably between 1.5mm and 2mm, the heat transfer sheet 541 has sufficient strength to support and fix the inner tube 53, and the heat transfer sheet 54 with this thickness has a small thermal resistance.

The outer tube 511 has a first end and a second end located on opposite sides of its central axis, and the heat conducting sheet 54 includes two heat conducting sheets 541 extending toward the first end and the second end respectively. The heat fins 541 divide the cool storage chamber 52 into two symmetrically arranged sub cool storage chambers 521 . The cold storage device 5 also includes a connecting channel 55 that communicates with at least two of the sub-cold storage chambers 521; so that the sub-cold storage chambers 521 are connected, and the cold storage material can pass through when the cold storage material undergoes a phase change and expands in volume. The connecting passages 55 flow in the adjacent sub-cool storage chambers 521 to release the pressure of a single sub-cool storage space 521 and prevent the cool storage device 5 from being deformed or bursting. Preferably, the connecting channel 55 is provided at the port of the heat transfer sheet 541 along the axial direction of the outer tube 511 .

Further, the heat-conducting fins 54 further include cooling fins 542 located in the sub-cool storage cavity 521 . The cooling fins 542 are connected to the inner tube 53 but are arranged at intervals from the outer tube 511 . In the direction from one heat transfer fin 541 to another heat transfer fin 541 disposed adjacent thereto, the arrangement density of a plurality of the heat dissipation fins 542 decreases, and/or the length of the heat dissipation fins 542 decreases. Therefore, the heat-dissipating fins 542 in the area with high density or long length have a large sum of heat transfer area, and the area with a large heat transfer area changes phase first, and the area with a small heat transfer area changes phase later; so that The cool storage material gradually undergoes a phase change along the direction of the arrow shown in FIG. 6 to avoid deformation or rupture of the cool storage device 5 . In addition, along the circumferential direction of the inner tube 53, the thickness of the thermally conductive sheet 54 gradually decreases. The above technical effects can be achieved. Among them, "reduction" means that there is a decreasing trend in the unit volume, which may be continuous reduction, or may be intermittent reduction such as equal difference reduction or stepwise reduction.

Preferably, the cooling fins 542 located in the two sub-cool storage chambers 521 are symmetrically arranged relative to the heat transfer fins 541 . Therefore, from the first end to the second end, the phase transition speeds of the cool storage liquid in the two sub cool storage chambers 52 are the same, that is, the phase transition speeds of the cool storage liquid on both sides of the two heat transfer fins 541 are basically the same, which can avoid the above The heat transfer sheet 541 is deformed or broken.

Please refer to FIG. 5 and FIG. 6 , the cool storage material at each point in the cool storage cavity 52 obtains cold or heat from the inner tube 53 , the heat conducting sheet 54 , and the outer tube 511 adjacent to it. The arrows in FIG. 6 indicate The order of magnitude of energy obtained at different points. In the process of use, when the cold storage device 5 is installed, the side with the higher density of the heat-conducting sheet 54 should be placed at the bottom, and the side with the lower density of the heat-conducting sheet 54 should be placed at the top, so that the liquid or gaseous The cold storage material flows upward to avoid tube expansion.

4-7, the central axis of the inner tube 53 coincides with the central axis of the outer tube 511, and the entire cold storage device 5 is relatively balanced, easy to manufacture and has a long service life. Referring to FIG. 8 , the central axis of the inner tube 53 deviates from the central axis of the outer tube 511 and deviates toward the first end, and the heat exchange rate ratio between the regenerator material at the first end and the inner tube 53 is at the second The heat exchange rate between the cold storage material on the side where the end is located and the inner pipe 53 is fast. In the specific use process, the first end of the cold storage chamber 52 is placed below, and the second end is placed above, so that the liquid or gaseous cold storage material flows upward to avoid tube expansion. Further, the outer wall of the casing 51 has a mark indicating the first end and/or the second end; it serves as a reminder when the cold storage device 5 is installed.

The cooling medium flows in from the inlet 31 of the cool storage tube 3 and then flows out from the outlet 32 of the cool storage tube 3 , exchanging heat with several cool storage devices 5 pierced on the cool storage tube 3 during the flow. Preferably, a plurality of cold storage devices 5 are arranged in several layers along the up-down direction, the cold storage pipes 3 are connected in series with each layer of cold storage devices 5 in sequence from bottom to top, and the inlets 31 of the cold storage pipes 3 are connected to the bottom row. on the inner tube of the cold storage device 5 .

Further, the cool storage assembly 100 further includes a cool storage temperature sensor connected in communication with the electronic control unit 7 to detect the temperature of the cool storage device 5 , and the cool storage temperature sensor is connected in communication with the electronic control unit 7 . Specifically, the cool storage temperature sensor is used to directly or indirectly measure the temperature of the cool storage material, so as to facilitate the judgment of the state of the cool storage material.

The cool storage temperature sensor is fixed on the outside of the cool storage device 5, and the temperature of the internal cool storage material is indirectly judged through the temperature correction on the outside; or the cool storage temperature sensor is fixed on the inside of the cool storage device 5, and directly measures the temperature of the cool storage material, Measurements are more precise.

Further, the cold storage assembly 100 further includes a temperature measuring assembly that is connected to the electronic control unit 7 in communication to detect the temperature of the cold storage medium 11, so as to judge the temperature and state of the cold storage medium 11, and the temperature measuring assembly can be fixed. on the cool storage tube 3 , the cool storage device 5 or the cool storage tank 1 .

The cool storage method of the cool storage module 100 will be described below, including controlling the points at which the cool storage starts and ends.

In the embodiment without the cold storage device 5, the cold storage can be started at any time. In the embodiment with the cool storage device 5, the inventor found that when the cool storage material in the cool storage device 5 is in a solid-liquid mixed state; the solid cool storage material is usually located in the upper part of the cool storage chamber 52 due to its low density, or because the cool storage chamber 52 In the setting of the internal structure, the solid cold storage material may also be located in the middle position of the cold storage cavity 52; if the cold storage device 5 is charged in this state, the solid cold storage material acts as a crystallization nucleus, and the phase transition occurs first around it, which is easy to Deformation or rupture of the cold storage device 5 is caused.

Referring to FIG. 20, the cold storage method of the present invention includes the following steps: before cold storage, first obtain the temperature T of the cold storage material in the cold storage device 5; determine that the temperature T is higher than the freezing point temperature T0 of the cold storage material, and if so, start the cold storage ; If not, periodically obtain the temperature T of the cool storage material. The method can ensure that the cold storage material is all liquid before the cold storage starts, so the phase transition can be carried out according to the preset phase transition direction, and the phenomenon of pipe cracking and pipe expansion can be avoided.

Specifically, the temperature T1 of the cool storage device 5 is obtained through the cool storage temperature sensor fixed on the outside of the cool storage device 5, and the temperature deviation ΔT between the outside of the cool storage device 5 and the internal cool storage material is calculated and corrected according to a large number of experiments, the temperature of the cool storage material T=temperature T1+ Temperature deviation ΔT. In general, the larger the thermal conductivity of the housing of the cold storage device 5, the smaller the temperature deviation ΔT. When the shell is made of aluminum, aluminum alloy and other metal materials, the temperature deviation ΔT is small. Under the operating conditions that do not require very strict temperature requirements, the temperature T1 can be regarded as the temperature of the cold storage material in the cold storage device 5 . The temperature T of the cool storage material can also be obtained directly through the cool storage temperature sensor fixed in the cool storage device 5, and the measured value is more accurate.

Further, in order to avoid inaccurate temperature measurement due to uneven temperature of the cold storage material, when the temperature T is higher than the freezing point temperature T0 of the cold storage material by the first temperature threshold, the cold storage is turned on again to ensure that all the cold storage materials are in liquid state. In a preferred embodiment, the first temperature threshold is 0.5°C to 5°C, preferably 2°C to 3°C, such as 3°C.

Further, if the temperature T is not higher than the freezing point temperature T0 of the cold storage material, the step of releasing cold energy is started until the temperature T is higher than the freezing point temperature T0 of the cold storage material, so as to ensure that all the solid cold storage materials are converted into liquid cold storage materials.

The amount of cold storage is subject to demand, and the methods for judging to stop cold storage include but are not limited to:

In the first embodiment, whether to stop the cold storage is determined based on the cold storage time, which can be applied to the situation with or without the cold storage device 5 . As shown in FIG. 20 , after the cool storage is started, the cool storage time is accumulated, and the cool storage is terminated when the time threshold value t0 is reached. Preferably, the time threshold t0 is between 1 hour and 3 hours, and the cold energy stored by the cold storage assembly 100 can maintain the temperature of the storage compartment 41 within the set temperature range for between 6 hours and 100 hours.

In the second embodiment, whether to stop the cold storage is determined based on the temperature of the cold storage material, which is applicable to the case where the above-mentioned cold storage device 5 is present.

As shown in Figure 20, after starting the cold storage, the temperature T of the cold storage material is obtained, and it is judged whether the temperature T is lower than the freezing point temperature T0 of the cold storage material. The method ensures that the cold storage material is completely changed from a liquid state to a solid state, and a large amount of cold energy is accumulated through the phase change process.

Preferably, it is judged that the temperature T is lower than the freezing point temperature T0 of the cold storage material by a second temperature threshold, if so, the cold storage is ended; otherwise, the cold storage is continued; Judgment errors caused by measurement errors, etc.

In the third embodiment, whether to stop the cool storage is determined by the crystal thickness of the cool storage agent 11 on the surface of the cool storage tube 3 or the cool storage device 5 , which is applicable to the situation with or without the cool storage device 5 .

In the embodiment without the cool storage device 5, during the cool storage process, the cool storage agent 11 close to the cool storage pipe 3 obtains the cooling capacity before the cool storage agent 11 far away from the cool storage pipe 3, and when the temperature of the cool storage agent 11 decreases When the freezing point is reached, the phase transition begins to occur at the regenerator tube 3 . When the thickness of the solid regenerator 11 reaches a certain level, the transfer of the cooling capacity of the regenerator tubes 3 to the external liquid regenerator 11 will be hindered to a certain extent, so the external regenerator 11 will not quickly become solid. A stirring device may also be provided in the regenerator tank 1 to drive the regenerator 11 to flow, so as to rapidly exchange heat with the regenerator tubes 3 .

The cold storage method includes the following steps: storing cold for the cold storage medium 11 through a cold storage tube 3 pierced in the cold storage medium 11 ; obtaining the thickness d1 of the solid cold storage medium 11 crystallized on the surface of the cold storage tube 3 ; judging the solid cold storage medium Whether the thickness d1 of the 11 reaches the thickness threshold d0, if so, stop the cold storage; if not, periodically obtain the thickness d1 of the solid cold storage agent 11. .

The setting of the thickness threshold d0 is determined by at least the following factors: the amount of the remaining liquid cooling agent 11, the cooling agent 11 is partially crystallized, and has accumulated enough cooling capacity, but a part of the cooling storage agent 11 is still in liquid state, which is convenient for reducing the cooling capacity. It is transmitted to the cooling unit; the influence of the solid cooling agent 11 on the heat transfer of the outer cooling agent 11 is determined.

In one embodiment, the thickness threshold is 1 cm to 4 cm, preferably 2 cm. The solid cooling agent 11 of this thickness affects the cooling capacity of the cooling storage tube 3 to transfer outward, and the speed at which the external cooling storage agent 11 continues to obtain cooling capacity is significantly reduced. trend.

In another embodiment, when the cold storage tubes 3 are arranged in a broken line, a serpentine shape or a spiral shape, the thickness threshold d0 is not greater than half of the distance between two adjacent cold storage tubes 3 in the radial direction of the cold storage tubes 3. If it exceeds one half, the crystallization of the cold storage agent 11 will be affected by the other adjacent three sections of the cold storage tube. Preferably, the thickness threshold d0 is between 0.2 and 0.4 of the distance between two adjacent cold storage tubes 3 sections. After the thickness of the cold storage medium 11 reaches the thickness threshold d0, the cold storage is not continued, so as to retain a sufficient amount of liquid cold storage. Agent 11.

In the embodiment with the cool storage device 5 , the cooling capacity of the cool storage pipe 3 is first transferred to the cool storage device 5 , and then transferred to the external cool storage agent 11 through the cool storage device 5 , and the cool storage agent 11 is crystallized on the surface of the cool storage device 5 at this time. .

The cold storage method includes the following steps: storing cold for the cold storage device 5 and the cold storage medium 11 soaking the cold storage device 5 through the cold storage pipe 3 passing through the cold storage device 5; For the thickness d1, it is judged whether the thickness d1 of the solid cool storage agent 11 reaches the thickness threshold d0, and if so, the cool storage is stopped; if not, the thickness d1 of the solid cool storage agent 11 is periodically obtained. At this time, the cold storage agent 11 also accumulates a part of the cooling capacity, but a part is still in liquid state, which can circulate and flow to charge the cold charging tank.

The setting of the thickness threshold d0 is the same as that in the above-mentioned embodiment. Specifically, the thickness threshold d0 is not greater than half of the distance between two radially adjacent cold storage devices 5 , preferably between 0.2 and 0.4.

In the above method, the thickness d1 of the solid cool storage medium 11 is obtained by a thickness sensor located in the cool storage tank 1, the thickness sensor is fixed on the cool storage tank 1 and the cool storage tube 3, and in the embodiment with the cool storage device 5, the thickness d1 is also It can be installed on the cold storage device 5 . The thickness sensor includes, but is not limited to: a sound wave sensor, an infrared sensor, and a pressure sensor.

In the fourth embodiment, whether to stop the cold storage is judged based on the crystallization amount of the cool storage agent 11 , which is applicable to the case where the cool storage device 5 is present or not.

The cold storage method includes the following steps: storing cold for the cold storage agent 11 through the cold storage pipe 3 penetrated in the cold storage agent 11, or for the cold storage device 5 and the soaking place through the cold storage pipe 3 passing through the cold storage device 5. The cool storage agent 11 of the cool storage device 5 stores cool; obtains the amount n1 of the solid cool storage agent 11 formed by crystallization; judges whether the amount n1 of the solid cool storage agent 11 reaches the crystallization amount threshold n0, if so, stop cool storage; if not, periodically Obtain the amount n1 of the solid coolant 11 .

The setting of the crystallization amount threshold n0: the cooling storage agent 11 is partially crystallized and has accumulated enough cooling capacity, but a part of the cooling storage agent 11 is still in liquid state, which is convenient for transferring the cooling capacity to the cooling unit. For example, the crystallized amount of the cool storage agent 11 is not more than 30 to 50% of the total amount thereof. Of course, it is also possible to refer to the setting of the thickness threshold d0 in the third embodiment, and convert it into a threshold value of crystallization amount according to the surface area of the cool storage tube 3 and the cool storage device 5 .

In a specific embodiment, the volume V0 of the cool storage agent 11 before starting cool storage is obtained; the volume V1 of the cool storage agent 11 during the cool storage process is obtained in real time; the amount n1 of the solid cool storage agent 11 is calculated according to the volume difference V1-V0.

Specifically, the cold storage device further includes a liquid level gauge communicated with the cold storage tank 1. On the one hand, the liquid level gauge can be used to detect the loss of the cold storage medium 11 and replenish the cold storage medium 11 in time; The liquid level gauge obtains the liquid level H0 before the cold storage and the liquid level H1 during the cold storage; the volume difference V1-V0 is calculated by the liquid level difference H1-H0.

In order to simplify the judgment, when the liquid level difference H1-H0 reaches the liquid level difference threshold, the cold storage is stopped. Or, before starting the cold storage, fill the cold storage tank 1 with the cold storage agent 11 to the first predetermined level, that is, make up for the cold storage agent 11; When the liquid level is reached, the cool storage agent 11 reaches the maximum allowable crystallization amount, and the cool storage is stopped.

When the multi-component compound cold storage agent 11 is selected, it is in the state of ice slurry after crystallization, and there is no clear boundary between the solid cold storage agent 11 and the liquid cold storage agent 11. Therefore, it is more appropriate to judge the end point of cold storage by judging the amount of crystallization. Of course, this method is also applicable to the single-component cooling agent 11 .

In the fifth embodiment, the temperature of the cool storage agent 11 is used to determine whether to stop the cool storage, which is applicable to the presence or absence of the cool storage device 5 .

In the embodiment without the cold storage device 5 , as shown in FIGS. 1 to 2 , the temperature measurement assembly includes at least a A temperature sensor; at least one temperature threshold value To corresponding to each of the temperature sensors is set in the electronic control unit 7 .

"The temperature sensor is arranged at intervals from the regenerator tube 3", which means that the temperature sensing element of the temperature sensor is arranged at a distance from the regenerator tube 3 to measure the temperature of the regenerator 11 at a distance from the regenerator tube 3 , and then determine the crystallization state of the cool storage agent 11 and the temperature after crystallization, so as to determine the amount of cold stored in the cool storage assembly 100 , so as to precisely control the cool storage process. The temperature sensor is fixed on the cool storage tube 3 or on the cool storage tank 1 .

Preferably, the regenerator tubes 3 are arranged in a zigzag, serpentine or spiral shape, and the distance between the temperature sensor and the regenerator tubes 3 is not greater than two adjacent regenerators along the radial direction of the regenerator tubes 3 One-half of the distance between the 3 sections of the tube. If it exceeds 1/2, the cool storage agent 11 will be influenced by the other adjacent three sections of the cool storage pipe. Preferably, the distance between the temperature sensor and the cool storage tube 3 is between 0.2 and 0.4 of the distance between two adjacent cool storage tubes 3 in the radial direction of the cool storage tube 3 . After the refrigerating agent 11 at the location is crystallized, the refrigerating agent 11 will not continue to be stored, so as to retain a sufficient amount of liquid refrigerating agent 11 to supply cooling to the cooling tank or the storage room 41 . Preferably, the distance between the temperature sensor and the cool storage tube 3 is not greater than one-fifth of the distance between two adjacent cool storage tube sections 3 in the radial direction of the cool storage tube 3 .

The temperature sensor is arranged near the outlet 32, for example, the distance between the temperature sensor and the outlet 32 along the extending direction of the regenerator tube 3 is not greater than a distance threshold, preferably the distance threshold is not greater than 20cm. The cooling medium flows from the inlet 31 to the outlet 32, and the temperature of the cooling medium is higher as it is closer to the outlet 32. Therefore, when the temperature of the cooling medium 11 near the outlet 32 decreases to the target value, the cooling medium 11 at other locations The temperature is also reduced to the target value.

In the embodiment with the cold storage device 5 , as shown in FIGS. 3 to 12 , the only difference from the embodiment without the cold storage device 5 is that the temperature measurement component includes at least one temperature measurement component disposed around any of the cold storage devices 5 and arranged at intervals therefrom. Temperature Sensor. In addition, the temperature sensor is fixed to the cool storage device 5 or to the cool storage tank 1 .

Preferably, the temperature sensor is located around the cool storage device 5 closest to the outlet 32 in the extending direction of the cool storage tube 3, and measures the temperature of the cool storage agent 11 in the area where the temperature drop is the slowest.

Please refer to FIGS. 9 to 12 , the distance between the temperature sensor and the cool storage device 5 is not greater than half of the distance between the cool storage device 5 and its adjacent cool storage device 5 , preferably 0.2 ~0.4.

For the two embodiments, the cold storage method includes the following steps: storing the cold storage medium 11 through the cold storage tube 3 passing through the cold storage medium 11 , and obtaining the cold storage through a temperature sensor arranged radially spaced from the cold storage tube 3 . or the cold storage device 5 and the cold storage agent 11 soaked in the cold storage device 5 are stored cold through the cold storage pipe 3 penetrated in the cold storage device 5, and the cold storage is obtained through a temperature sensor arranged at an interval from the cold storage device 5. The temperature Ta of the agent 11 is determined; whether the temperature Ta reaches at least one of the multiple temperature thresholds To corresponding to the temperature sensor is determined, if so, the cold storage is stopped; if not, the temperature Ta is obtained periodically.

During the cool storage process, the temperature of the cool storage agent 11 first gradually drops to its freezing point, and after the cool storage agent 11 is crystallized, the temperature of the solid cool storage agent 11 will continue to drop. Therefore, the temperature of the cool storage agent 11 drops to different degrees, which means that the stored cooling capacity is different, and the lower the temperature, the greater the stored cooling capacity.

Preferably, the plurality of temperature thresholds To are different, and at least one temperature threshold To is lower than the freezing point of the cool storage agent 11. When the temperature of the cool storage agent 11 drops to the temperature threshold value, the cool storage agent 11 has all been crystallized, and a large amount of the cool storage agent 11 is accumulated through the phase transition process. Cooling capacity.

In the sixth embodiment, the temperature of the cold storage agent 11 is used to determine whether to stop the cold storage. or without the cold storage device 5 .

As shown in FIGS. 1 to 2 , in the embodiment without the cool storage device 5 , the temperature measuring component includes at least two temperature sensors, and the at least two temperature sensors extend from the cool storage tube 3 to the The distances of the cold storage pipes 3 are different.

During the cool storage process, the cool storage agent 11 begins to crystallize outwards gradually from the cool storage tube 3. During the cool storage process, the temperature of the cool storage agent 11 at a position with a smaller distance from the cool storage tube 3 than at a position with a greater distance from the cool storage tube 3 is the temperature of the cool storage agent 11. Falling fast. Therefore, when the temperature of the cool storage medium 11 at different locations drops to the corresponding temperature threshold value To, it indicates that the stored cooling capacity is different.

Along the extension direction of the cold storage tube 3, the distance between two adjacent temperature sensors is not greater than the first distance threshold; the sequence of obtaining the cooling capacity of the cold storage agent 11 along the extension direction of the cold storage tube 3 can be slowed down or avoided. The influence of different speed and speed on the temperature detection of the coolant 11.

Preferably, the first distance threshold is not greater than 15 cm, and most preferably, as shown in FIG. 1 , the at least two temperature sensors are located at the same point in the extending direction of the cold storage tube 3 .

The distance difference between the at least two temperature sensors along the radial direction of the cold storage tube 3 to the cold storage tube 3 can be an arithmetic sequence or a non-arithmetic sequence. The gap is adjusted adaptively.

In addition, along the radial and axial directions of the regenerator tube 3, the positional relationship between the temperature sensor and the regenerator tube 3 is the same as that of the fifth embodiment, which will not be repeated here. In the embodiment with the cold storage device 5 , the temperature measurement assembly includes at least two of the temperature sensors arranged around any of the cold storage devices 5 , and the distances from the at least two temperature sensors to the cold storage device 5 are different. The difference from the above embodiment is that the temperature sensor is located on the outer peripheral side of the cold storage device 5 .

The distance between the temperature sensor and the cold storage device is not greater than half of the distance between the cold storage device 5 and its adjacent cold storage device 5, preferably between 0.2 and 0.4, more preferably not greater than five minutes one.

The temperature sensor is preferably located around the cold storage device 5 closest to the outlet 32 .

The distance difference between the at least two temperature sensors and the cold storage tube 3 or the cold storage device 5 may be an arithmetic sequence or an unequal sequence.

As shown in FIG. 10 , at least two temperature sensors are arranged at intervals along the radial direction of the regenerator tube 3 . Specifically, with the axis of the cold storage tube 3 as the center, the temperature sensors are arranged at multiple points A, B, C, etc., with different distances from the center. Among them, the distances between point C and two adjacent cold storage devices 5 are both L, and point A is faster than point B than point C in terms of crystallization speed.

In addition, the regenerator tubes 3 and the regenerators 5 have the same axis, respectively take the axes of the three adjacent regenerators 5 as the center of the circle, and take the half of the distance between the axes of the two adjacent regenerators 5 as the radii. The tangent circle encloses a center area similar to a triangle, and at least one temperature sensor can be arranged in the center area, for example, at the center point D of the center area. When the cool storage agent 11 at point D is crystallized, the crystallized amount of the cool storage agent 11 reaches the maximum value.

Of course, as shown in FIG. 11 , at least two temperature sensors may be arranged along different radial directions of the cold storage tube 3, such as multiple points such as A', B', and C' in the figure. Among them, the distance between point C' and the cold storage device 5 is the same as the distance between point D and the cold storage device 5 in Fig. 10, and point A' is faster than point B' than point C' in terms of crystallization speed.

Viewed from the axial direction of the cold storage device 5, at least two temperature sensors may be located at the same position, or may be distributed at multiple positions such as A", B", and C" along the axial direction as shown in Figure 12, These points are located on the same cold storage device 5 and are less affected by the temperature change of the cooling medium along the extension direction of the cold storage tube 3 .

Based on the two embodiments, the cold storage method includes the following steps:

The cool storage agent 11 is stored cold through the cool storage tube 3 penetrated in the cool storage medium 11 , and the cool storage is obtained by any one of at least two temperature sensors with different distances from the cool storage tube 3 to the cool storage tube 3 along the radial direction of the cool storage tube 3 . The temperature Ta of the agent 11; or, through the regenerator tube 3 penetrated in the regenerator 5 to store the regenerator 5 and the regenerator 11 soaked in the regenerator 5, and pass the regenerator along the radial direction of the regenerator 3 to The temperature Ta of the cool storage medium 11 is acquired by any one of the at least two temperature sensors with different distances from the cool storage device 5 pierced on the cool storage tube 3; it is judged whether the temperature Ta reaches the temperature threshold value To corresponding to the temperature sensor , if yes, stop cold storage; if no, obtain temperature Ta periodically.

The temperature of the cool storage medium 11 is acquired by at least two temperature sensors with different distances from the cool storage tube 3 along the radial direction of the cool storage tube 3 . Select a suitable temperature sensor to measure the temperature, and judge the crystallization state of the cooling storage agent 11 and the temperature after crystallization through the temperature, so as to judge the cooling capacity of the cooling storage component 100, so as to accurately control the cooling storage process; on the other hand, set at least two temperatures Sensor, when there is an error in one temperature sensor, it can be judged by other sensors to stop the loss in time.

The temperature threshold value To corresponding to the temperature sensors with different distances to the cold storage tube 3 is the same, and the amount of the stored cold amount is different when the coolant 11 at the different distance from the cold storage tube 3 reaches the temperature threshold value To. For example, when point A is closer to the regenerator tube 3 than point B, and the temperatures of points A and B reach the same temperature threshold value To, the cooling capacity stored by the cooling agent 11 is the first cooling capacity and the second cooling capacity, respectively; The cooling capacity is less than the second cooling capacity. The user can select the temperature sensor at the appropriate location to obtain the temperature of the corresponding location point according to the cooling capacity. Of course, the temperature thresholds To corresponding to temperature sensors with different distances to the cool storage tube 3 may also be different. When the cool storage agent 11 at the location of each temperature sensor reaches its corresponding temperature threshold To, it represents a cool storage gear .

Or, the temperature threshold value To corresponding to the temperature sensor far away from the regenerator tube 3 is higher than the temperature threshold value To corresponding to the temperature sensor near the regenerator tube 3 , which is set in accordance with the cooling law of the regenerator 11 .

Preferably, at least two of the at least two temperature sensors with different distances along the radial direction of the cool storage tube 3 to the cool storage tube 3 are used to obtain the temperature Ta of the cool storage agent 11 after the cool storage time at one end; Whether the temperature Ta obtained by the temperature sensor reaches the temperature threshold value To corresponding to the temperature sensor, if so, stop the cold storage; if not, periodically obtain the temperature Ta through at least two temperature sensors. The temperatures obtained by at least two temperature sensors with different distances from the cold storage tube 3 all reach their respective temperature thresholds To, and through the simultaneous judgment of multiple temperature sensors, it is possible to avoid excessive or insufficient cold storage caused by abnormal operation of a certain temperature sensor. Phenomenon.

Preferably, as in the fifth embodiment, each temperature sensor may have multiple temperature thresholds To, and when the temperature detected by one temperature sensor reaches a corresponding temperature threshold To, the temperature detected by another temperature sensor will also be Reaching a corresponding temperature threshold To, that is, when the cold storage period reaches a preset required cooling capacity, the temperature obtained by at least two temperature sensors just reaches its corresponding temperature threshold To; multiple levels and multiple judgments can be used to avoid error. For example, when the temperature acquired by the temperature sensor at point A reaches one of its temperature thresholds To, the temperature acquired by the temperature sensor at point B also happens to reach one of its temperature thresholds To.

The difference between the seventh embodiment and the fifth embodiment is that the cold storage capacity of the cold storage medium 11 is determined by at least two temperature sensors arranged at intervals along the extending direction of the cold storage tube 3 , which is applicable to the situation with or without the cold storage device 5 .

As shown in FIGS. 13 and 14 , the temperature measurement assembly includes at least two temperature sensors, and the at least two temperature sensors are respectively arranged around different cold storage pipe 3 sections arranged at intervals along the extending direction of the cold storage pipe 3 ; And the distance between two adjacent temperature sensors is not less than the first distance threshold.

The set value of the first distance threshold is determined by the speed at which the cold storage agent 11 at the positions of the two adjacent temperature sensors accumulates the cooling capacity, and the state and/or temperature of the cold storage agent 11 at the two positions have obvious differences. difference. The temperature of the cold storage agent 11 at the position of the temperature sensor near the inlet 31 along the length direction of the cold storage pipe 3 is lower than the temperature of the cold storage agent 11 at the position of the other temperature sensor by a first temperature difference threshold, and the first temperature difference threshold A temperature difference threshold is not less than 5°C; or when the regenerator 11 at the location of the temperature sensor located near the inlet 31 along the length direction of the regenerator tube 3 enters the crystallization process, the other temperature sensor is located at the location of the regenerator when the regenerator 11 is located. The temperature of the refrigerant 11 is higher than the freezing point temperature of the refrigerant 11 by a second temperature difference threshold, the second temperature difference threshold is not less than 1°C, preferably not less than 3°C; When the temperature of the coolant 11 at the location of the temperature sensor 31 is lower than the freezing point of the coolant 11 , the temperature of the coolant 11 at the location of the other temperature sensor is the freezing point temperature of the coolant 11 .

The cold storage device 5 comprehensively considers the influence of the temperature change of the cooling medium flowing through the cold storage tube 3 on the cooling capacity obtained by the cooling storage agent 11, so that the cooling storage gears of the cooling storage assembly 100 are diversified, so that the cooling capacity can be selected according to the required cooling capacity. Appropriate temperature sensors are used to measure the temperature to accurately control the cold storage process; at least two temperature sensors are set at the same time. When there is an error in one temperature sensor, other sensors can be used to assist judgment and stop losses in time.

Specifically, the first distance threshold is not less than 30%, preferably not less than 50% of the length of the cold storage tube 3 passing through the cold storage medium 11; preferably, the first distance threshold is not less than 150cm.

The regenerator tubes 3 are arranged in a zigzag, serpentine or spiral shape, and there are 3 segments of regenerator tubes without a temperature sensor around them between the 3 segments of the regenerator tubes that are provided with temperature sensors. Therefore, from the perspective of spatial position, There is a certain distance between the two temperature sensors, and the temperature and/or state of the cooling medium 11 is greatly different, which can represent two gears with different cooling demands.

The cooling medium flows from the inlet 31 to the outlet 32, and the cooling medium 11 near the inlet 31 acquires the cooling capacity at the slowest speed. Therefore, when the temperature of the cooling medium 11 near the outlet 32 decreases to the target value, other locations The temperature of the cool storage agent 11 is also lowered to the target value. Therefore, if the distance between one of the temperature sensors and the outlet 32 along the extending direction of the regenerator tube 3 is not greater than the second distance threshold, it can be determined whether the maximum cooling capacity of the regenerator 11 has been reached. Preferably, the second spacing threshold is not greater than 150 cm, preferably not greater than 100 cm, preferably not greater than 50 cm, preferably not greater than 20 cm.

The distances from the at least two temperature sensors to the cool storage tube 3 along the radial direction of the cool storage tube 3 are the same or different, and both can be used to judge the cool storage state. The regenerator tubes 3 are arranged in a zigzag, serpentine or spiral shape, and the distance between the temperature sensor and the regenerator tubes 3 is not greater than two adjacent 3rd segments of the regenerator tubes along the radial direction of the regenerator tubes 3 . One-half of the distance between them is preferably between 0.2 and 0.4 of the distance between two adjacent three sections of cold storage tubes.

In the embodiment with the cold storage device 5 , the difference from the above-mentioned embodiment is that the temperature sensor is arranged around the cold storage device 5 . The temperature measuring assembly includes at least two temperature sensors, and the at least two temperature sensors are respectively disposed around different cold storage devices 5 .

Specifically, along the extending direction of the cold storage tube 3, the two cold storage devices 5 with temperature sensors are arranged at intervals around them, and the separation distance is not less than a third distance threshold, preferably, the third distance threshold is not less than 50% of the length of the cold storage tube 3 in the cold storage medium 11, or the third distance threshold is not less than 150cm; or, along the extension direction of the cold storage tube 3, two of the cold storage devices with temperature sensors are arranged around Between 5 there is at least one cold storage device 5 without a surrounding temperature sensor. The interval between two adjacent temperature sensors is large, so that the temperature of the cool storage agent 11 at different parts can be acquired.

The distances from the at least two temperature sensors to the closest cold storage device 5 are the same or different. For the positional relationship between the temperature sensor and the cold storage device 5 closest to it, reference may be made to the fifth embodiment, which will not be repeated here.

Preferably, one of the temperature sensors is located around the cold storage device 5 closest to the outlet 32 .

The cold storage method includes the following steps: supplying cooling to the cold storage medium 11 through a cold storage pipe 3 pierced in the cold storage medium 11 , and passing at least two cold storage pipe 3 sections arranged at intervals along the extending direction of the cold storage pipe 3 . Any one of the surrounding temperature sensors can obtain the temperature Ta of the cool storage agent 11; or supply cooling to the cool storage device 5 and the cool storage agent 11 soaked in the cool storage device 5 through the cool storage pipe 3 passing through the cool storage device 5, along the Any one of the temperature sensors around the at least two cool storage devices 5 arranged at intervals in the extending direction of the cool storage tube 3 acquires the temperature Ta of the cool storage medium 11; it is judged whether the temperature Ta reaches the temperature threshold value To corresponding to the temperature sensor , if yes, stop cold storage; if no, obtain temperature Ta periodically.

The temperature thresholds To corresponding to the temperature sensors located around the at least two cold storage tube 3 sections are the same or different, and various gears representing different cold storage capacities can be combined through different temperature thresholds T0. Along the extension direction of the cold storage tube 3, the temperature threshold To corresponding to the temperature sensor with a short distance to the outlet 32 is higher than the temperature threshold To corresponding to the temperature sensor farther from the outlet 32, which is consistent with the cold storage. The temperature distribution of the coolant 11 in the tank 1 is regular, and the two temperature sensors can be calibrated with each other.

Preferably, the temperature Ta of the regenerator 11 is obtained through at least two of the temperature sensors around the at least two 3 sections of the regenerator arranged at intervals along the extending direction of the regenerator 3; it is judged whether the temperature Ta obtained by each temperature sensor reaches the same The temperature threshold value To corresponding to the temperature sensor, if yes, stops the cold storage; if not, periodically obtains the temperature Ta through at least two temperature sensors. The temperatures obtained by at least two temperature sensors all reach their respective temperature thresholds To, and the simultaneous judgment by multiple temperature sensors can avoid the phenomenon of excessive or insufficient cold storage caused by abnormal operation of a certain temperature sensor.

Each temperature sensor can have multiple temperature thresholds To, and when the temperature detected by one temperature sensor reaches a corresponding temperature threshold To, the temperature detected by another temperature sensor also reaches a corresponding temperature threshold To, that is, When the cold storage period reaches a preset required cooling capacity, the temperatures obtained by at least two temperature sensors just reach their corresponding temperature thresholds To; multiple judgments can be made in multiple gears to avoid errors.

The present invention also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the above-mentioned cold storage method is implemented. A computer device includes a memory, a processor, and a computer program stored on the memory and running on the processor. When the processor executes the computer program, the above-mentioned cold storage method is implemented.

The above-mentioned cold storage assembly 100 and cold storage method of the present invention are applicable to a cold storage device having the cold storage assembly 100 , and the cold storage device may be a cold charging machine 200 or a unit distribution box 400 of a cold chain system.

In one embodiment, as shown in FIGS. 1 to 16 , the cold storage device is a cold charging machine 200 for charging the unit distribution box 400 with cold. The cooler 200 includes a box 21 , a refrigeration unit 22 , any of the above-mentioned cold storage components 100 , a cooling component 23 and an electronic control unit 7 , and the box 21 is used to accommodate and protect other components.

The cold storage assembly 100 adopts any one of the above. The cool storage agent 11 is a heat transfer medium that transfers the stored cold energy to the unit distribution box 400 . Preferably, in the embodiment with the cool storage device 5, the freezing point of the cool storage agent 11 is not higher than the freezing point of the cool storage material, and when the cool storage material changes into a solid state, all or a part of the cool storage agent 11 Still in a liquid state, it is convenient to charge the unit distribution box 400 with cold.

In addition, the temperature of the cold storage material is set to T2, the temperature of the cold storage agent 11 is T3, and the set temperature of the unit distribution box 400 is T4. In order to ensure rapid and effective cold energy transfer, T3-T2≥10℃, preferably between 10 Between °C and 20 °C, more preferably between 15 °C and 20 °C; T4-T3≥3 °C, preferably between 3 °C and 15 °C, more preferably between 5 °C and 15 °C.

The refrigeration unit 22 includes a compressor, a condenser, a throttling element and an evaporating tube which are connected to form a refrigerating circuit. The evaporating tube is inserted into the cold storage liquid, or provides cooling capacity to the cold storage liquid through a heat transfer medium. .

During the valley power at night, the refrigeration unit 22 works and transfers the cooling capacity to the cold storage assembly 100 to store a large amount of cold capacity; during the day, the cold storage assembly 100 provides the cooling capacity to the unit distribution box 400 through the cooling charging assembly 23, which is equivalent to Due to peak shift and valley power consumption, the electricity cost of cooling is reduced. In addition, the power of the refrigeration unit 22 is limited, and the maximum cooling capacity that can be provided is also limited, so it cannot charge multiple unit distribution boxes 400 at the same time; and the cooling storage assembly 100 stores a large amount of cooling capacity, which can exceed all the cooling capacity when needed. The total output power of the refrigeration unit 22 is used to charge the multiple unit distribution boxes 400 for cooling. Or, in order to charge multiple unit distribution boxes 400 at the same time, it is necessary to increase the power of the refrigeration unit 22 or set up several more refrigeration units 22, and the cost is high; and the present invention reduces the power of the refrigeration unit 22 through the cold storage assembly 100 or quantity, reducing costs.

The cold charging assembly 23 includes a liquid outlet pipe 231 communicated with the cold storage tank 1 , a liquid return pipe 232 communicated with the cold storage tank 1 , and a cold charging pump 233 . Wherein, in order to facilitate docking with the unit distribution box 400 , the cooling assembly 23 further includes a liquid outlet joint 2311 connected with the liquid outlet pipe 231 and a liquid return joint 2321 connected with the liquid return pipe 232 .

The liquid outlet pipe 231 is used to output the cold storage medium 11 in the cold storage tank 1 to the unit distribution box 400, and the liquid return pipe 232 is used to return the cold storage medium 11 in the unit distribution box 400 to the cold storage tank. 1 inside. In the present invention, the liquid outlet pipe 231 is connected to the bottom of the cool storage tank 1 , and the connection between the liquid return pipe 232 and the cool storage tank 1 is not lower than the liquid outlet pipe 231 and the cool storage tank 1 The connection point of the cooling storage device 5 is preferably not lower than the top of the cooling storage device 5, so that the returned cooling storage agent 11 can fully exchange heat with the cooling storage agent 11 and the cooling storage device 5, so as to ensure that the output cooling storage agent 11 has a lower temperature. Preferably, the connection between the liquid return pipe 232 and the cold storage tank 1 and the connection between the liquid outlet pipe 231 and the cold storage tank 1 are arranged diagonally in space, so that the cooling medium 11 can be stored in the cold storage tank 1 longer. flow path.

The cooling charging pump 233 drives the cooling storage medium 11 to circulate in the cooling storage tank 1 and the unit distribution box 400 , and transfers the cold energy stored in the cooling storage device 5 to the unit distribution box 400 . Specifically, the charging and cooling pump 233 is connected to the liquid outlet pipe 231 and the connection with the cold storage tank 1 , or is connected to the liquid outlet pipe 231 , and actively drives the cooling storage medium 11 to flow to the unit distribution box 400 . Alternatively, the charging and cooling pump 233 is connected to the connection between the liquid return pipe 232 and the cold storage tank 1 , or is connected to the liquid return pipe 232 , and is suitable for driving the coolant 11 to flow in a closed circulation loop.

Further, the charging and cooling assembly 23 also includes a ball valve 234. When there is a problem with the liquid outlet pipe 231, the liquid return pipe 232, and the charging and cooling pump 233, the ball valve 234 is used to close the cold storage equipment for maintenance.

In another embodiment, as shown in FIGS. 1 to 14 and FIGS. 17 to 19 , the cold storage device is a unit distribution box 400 , and the unit distribution box 400 includes a storage room 41 , a cold storage assembly 100 , and a cooling assembly. 42 and electronic control unit 7. Preferably, the cool storage assembly 100 is located below the storage chamber 41 , and there is a thermal insulation board 43 between the cool storage assembly 100 and the storage chamber 41 .

The cold storage assembly 100 is any one of the above, and preferably, further includes a first joint 33 and a second joint 34 respectively connected to the inlet 31 and the outlet 32 of the cold storage tube 3 ; For example, the first joint 33 can be quickly connected with the liquid outlet joint 2311 ; the second joint 34 can be quickly connected with the liquid return joint 2321 .

In addition, the cooling storage agent 11 is usually selected according to the set temperature of the unit distribution box 400 , and the freezing point of the cooling storage agent 11 is not higher than the temperature required by the unit distribution box 400 . For example, when the unit distribution box 400 is a refrigerated box, and the temperature is required to be around 8° C., all cooling storage agents 11 whose freezing point is not higher than 0° C., such as water, can be used. When the unit distribution box 400 is a freezer box and the temperature is required to be -18°C, an antifreeze liquid whose freezing point is not higher than -25°C can be used as the cooling storage agent 11 .

The cooling assembly 42 is used for transferring the energy stored in the cooling storage assembly 100 to the storage compartment 41 to preserve the freshness of the products located therein. Specifically, the cooling assembly 42 includes a cooling supply pipe 421 communicating with the cooling storage tank 1 , a cooling supplying pump 422 for driving the cooling storage medium 11 to circulate in the cooling storage tank 1 and the cooling supplying pipe 421 , and part of the cooling supplying pipe 422 . A tube is located within the storage compartment.

Compared with the traditional solution of cooling the storage room 41 by circulating air, the present invention drives the liquid coolant 11 to circulate and flow to the storage room 41 through the cooling pump 422 to supply cooling to the storage room 41 , and the cooling capacity carried by the liquid coolant 11 is proportional to The air is large, and after the cooling pump 422 stops running, the refrigerant 11 in the cooling pipe 421 in the storage room 41 can still maintain a low temperature for a long time, and continue to supply cooling to the storage room 41. The pump 422 only needs to work for a short time, so that the storage chamber 41 can be maintained within the set temperature for a long time. For example, in a period of 0.5 hours to 3 hours, the cooling pump 422 only needs to operate for 1 to 3 minutes, which generates less heat, and the cooling pump 422 needs less electricity, and only needs an ordinary battery. Maintenance, the capacity of the battery is greatly reduced, and the charging time is shorter.

Preferably, part of the cooling pipes 421 are located at the top of the storage room 41, to drain the cooling agent 11 from the cold storage tank 1 to the top of the storage room 41, which conforms to the principle of cold air sinking, and when refrigeration/ When there are few products to be frozen, the top of the storage compartment 41 is left idle to avoid partial freezing of products. Specifically, the storage compartment 41 is surrounded by a top wall, a side wall and a bottom wall, and part of the cooling pipes are located on the top wall and/or the upper half of the side wall.

In the present invention, the cooling pipe 421 extends through the heat insulating plate 43 into the storage room 41 . Specifically, the cooling pipe 421 includes a first cooling pipe 423 extending upward from the cold storage tank 1 , a radiating pipe 424 communicating with the first cooling pipe 423 , a radiating pipe 424 communicating with the radiating pipe 424 and extending toward the The second cooling pipe 425 extends downward to the cold storage tank 1 , and the cooling pipe 424 is located on the top of the storage room 41 . Specifically, the heat dissipation pipes 424 are distributed on the top wall as evenly as possible, for example, in a serpentine or corrugated or mosquito coil shape, or the heat dissipation pipes 424 include a liquid distribution pipe, a liquid collection pipe, and a liquid distribution pipe and a liquid collection pipe. Several communicating pipes between the liquid pipes, wherein the liquid dividing pipes and the liquid collecting pipes are located on the same side of the several communicating pipes or are separately arranged on both sides of the several communicating pipes; and/or, the cooling pipes 424 are arranged on the The upper half of the side wall, for example, is located in the, and/or, the heat pipe 424 is arranged on the upper half of the side wall, for example, in the upper third area or the upper quarter of the side wall in one of the areas.

The first cooling pipe 423 and the second cooling pipe 425 are located at the side edge of the thermal insulation box 40 or on the side wall of the thermal insulation box 40 and do not occupy the storage space of the storage room 41 , which is convenient for stacking goods.

Preferably, the cooling assembly further comprises a water catch bar located under the cooling pipe at the top; it can prevent the condensed water from dripping onto the cargo. Further, the first end of the water receiving strip in the length direction is lower than the oppositely arranged second end; that is, the water receiving strip is arranged obliquely or stepped, and the condensed water flows to one side and falls along the wall.

The cooling assembly also includes a water guide groove arranged at the first end of all the water-saving bars, the water guide groove is provided with a discharge port for discharging condensed water to the outside; the condensed water of all the water-saving bars is collected to all the water saving bars. The aqueduct is discharged outwards.

Or, the cooling assembly further includes a water receiving tray located at the top of the storage compartment 41, and the water receiving tray includes a water receiving portion located below the cooling pipe for receiving condensed water, connecting adjacent The connecting parts between the water receiving parts, preferably, the connecting parts are provided with holes to transmit the cold downward. Preferably, the first end in the longitudinal direction of the water receiving portion is lower than the oppositely arranged second end. That is, the water receiving tray is arranged in an inclined or stepped manner, and the condensed water flows to one side and falls along the wall surface.

The cooling assembly further includes a water guide groove arranged at the first end of all the water receiving parts, and the water guide groove is provided with a discharge port for discharging condensed water to the outside; the condensed water of all the water receiving parts is collected to the The aqueduct is discharged outwards.

Further, the cooling assembly further includes an indoor temperature sensor (not shown) for detecting the temperature in the storage chamber 41 , and the indoor temperature sensor is located in the storage chamber 41 . The indoor temperature sensor and the cooling pump 422 are all connected in communication with the electronic control unit 7 . According to the temperature in the storage chamber 41 , the working state of the cooling pump 422 is controlled, and heat or cold is supplied to the storage chamber 41 to maintain its temperature within a small range.

In addition, the cold storage assembly 100 , the refrigerant 200 , and the unit distribution box 400 all further include a rechargeable battery assembly 9 for supplying power to power-demanding components. Or, the above-mentioned components that require electricity are all components with their own batteries.

Preferably, a receiving cavity 401 is provided on the outside of the box body of the cooling machine 200 and the unit distribution box 400 , and the motor part of the cooling pump 422 , the electronic control unit 7 and the battery assembly 9 are arranged in The storage cavity 401 is convenient for charging, control and maintenance, and the heat generated by these components when they work is directly diffused outward, so that the cold energy stored in the energy storage assembly will not be consumed.

In addition, the charging assembly 9 in the charger/cooler 200 includes a power input terminal and a power output terminal for supplying power to each power-demanding unit. The power input terminal is connected to 220V or 380V commercial power, and the power output terminal provides DC power to the components of the chiller 200 or the unit distribution box 400, and the output voltage includes but is not limited to 12V, 24V, 36V, 48V, 72V.

Further, the electronic control unit further includes a signal connection terminal for transmitting signals with the unit distribution box 400 . For example, during cooling, the unit distribution box transmits the cooling information to the electronic control unit through the signal connection terminal, which flows into the cooling progress and the cooling end signal. In addition, the sensors and the like involved in this article can also be classified as a part of the electronic control unit.

In addition, please refer to FIG. 21 to FIG. 26 , which is a unit distribution box 400 according to a preferred embodiment of the present invention, which can be used at any stage in the cold chain transportation process, such as: the collection place, the first kilometer, the transportation, the last One kilometer; even the staging and sale stage of the goods after delivery to the destination.

The unit distribution box 400 includes a thermal insulation box 40 having an opening 44 for loading and unloading goods, and a leak-proof cooling structure 6 that opens the opening 44 in multiple stages from top to bottom. “Opening the opening 44 in multiple stages from top to bottom” includes two meanings: i) opening the opening 44 from top to bottom through the anti-leakage cooling structure 6, so that the cargo can be unloaded from top to bottom; When the cargo is full, unfold the anti-leakage cold structure 6 from bottom to top, and close the opening 44; ii) "multi-stage opening" means: opening the opening 44 from top to bottom at least twice; multi-stage opening also includes : Stepless opening, the adjustment range of opening is small, and the size of the opening area can be adjusted arbitrarily; and step-by-step opening, the adjustment range of opening is large, usually the height of one cargo box is used as the adjustment unit.

The unit distribution box 400 combines the principle of cold air sinking and hot air rising and the law of unloading goods from top to bottom. When unloading starts, the leakage-proof cold structure 6 first opens a part of the opening 44 downward, and the unloading is located in the heat preservation area. The topmost goods in the box 40; at this time, the goods at the bottom are still shielded by the anti-leakage cold structure 6, and will not be exposed to the outside high temperature environment of 30 to 40 degrees or even higher, avoiding leakage of cold energy; and the top After the heat exchange between the area and the outside air, the temperature rises, and the impact on the goods below is relatively small. After the top cargo is unloaded, a part of the opening 44 is opened downward through the anti-leakage cooling structure 6, and the cargo is unloaded in multiple stages from top to bottom as a whole. When loading, if it cannot be filled at one time, the anti-leakage cold structure 6 can be pulled up to the position of the current cargo to protect it.

In a large class of embodiments, the anti-leakage cold structure includes: a shielding curtain for shielding the opening, an adjustment structure for adjusting the area of the shielding curtain to cover the opening, and the size of the opening is controlled by the adjustment structure to avoid opening. Excessive cold leakage.

Among them, the shielding curtain 61 is the main body for shielding the opening, which itself may have a certain strength. The shade 61 can be switched between the unfolded state and the stored state, and the length of the shade 61 in the unfolded state is preferably equal to or greater than the height of the opening 44 .

In the first type of embodiment, by controlling the position of the top of the shielding curtain 61, the opening area of the shielding curtain 61 is controlled.

The fixing structure includes a first fixing piece 62 connected to the top of the shade 61 , and a second fixing piece 631 for fixing the first fixing piece 62 at different heights. The second fixing piece 631 is located at the width of the opening 44 . one or both sides of the direction.

The first fixing member 62 is directly or indirectly connected with the top of the shielding curtain 61 to pull up the shielding curtain 61 from the top, and control the opening of the opening by adjusting the position of the top of the shielding curtain 61 . area. When loading goods with a certain height, the first fixing member 62 can be fixed at the corresponding height first to protect the goods loaded first from leaking cold; when unloading from top to bottom, how much is needed to unload , the shielding curtain 61 is pulled to the corresponding height, and the goods that do not need to be unloaded are kept warm; it is very practical.

The second fixing member 631 is directly or indirectly fixed to the opening of the thermal insulation box 40 . The matching manners of the first fixing member 62 and the second fixing member 631 include but are not limited to the following:

In a specific embodiment, the first fixing member 62 is a fixing rod, which is fixed to at least a part of the shade curtain 61 along the width direction of the opening. Both ends of the fixing rod protrude out of the shade curtain 61 , and the second fixing member 631 includes a plurality of fixing grooves capable of accommodating the lengthwise ends of the fixing rod, and the plurality of fixing grooves are located at different heights. When both ends of the fixing rod 231 are fixed to the fixing grooves of different heights, the areas of the openings 44 covered by the shielding curtain 61 are different.

Preferably, a handle 621 is provided on the fixing rod, so that the user can pull up the shade 61 or retract the shade 61 downward. In addition, hooks 641 are also provided on the top of the thermal insulation box 40 or on the top beam 64. When the shielding curtain 61 is pulled up to cover all the openings, the shielding curtain 61 or the first The fixing member 62 is hung on the hook 641, and plays a double fixing function.

Further, the second fixing member also includes an extension groove 632 extending in the up-down direction and communicating with several fixing grooves. The two ends of the fixing rod slide in the up-down direction in the extension groove 632 to facilitate automatic storage. The shade 61.

In another embodiment, the first fixing member is a first suction member, the second fixing member includes a plurality of second suction members that cooperate with the first suction member, and the plurality of second suction members are located at At different heights, the first sticky suction member cooperates with the second sticky suction member at different heights to gradually adjust the area of the shielding curtain 61 to cover the opening. Or, the second fixing piece is a second sticking piece extending in the height direction and capable of sticking with a plurality of the first sticking pieces, and the first fixing piece can be sticking to the second fixing piece Stepless opening is achieved at different positions.

Specifically, the first fixing piece and the second fixing piece are mutually matched magnetic attraction pieces or Velcro.

In another embodiment, the first fixing member is a first hanging member, the second fixing member includes a plurality of second hanging members matched with the first hanging member, and the plurality of second hanging members are located at different heights. Specifically, the first fixing member and the second fixing member are hooks that cooperate with each other. Or, one of the first fixing member and the second fixing member is a hook, the other is a hanging ring, and the hook is hung on the hanging ring, or the hanging ring is hung on the hook, so that the first Fixing of fasteners. Or, one of the first fixing member and the second fixing member is a positioning hole or a positioning ring, and the other is a positioning pin. By inserting the locating pin into the locating hole or the locating ring, the fixing of the first fixing member is realized.

Or, as shown in FIG. 27 , the fixing structure includes: a connecting member 6a connected to the top of the shielding curtain 61 , and a driving member 6b that drives the connecting portion to ascend and descend, and the driving member 6b is fixed to the opening of the opening. top or bottom. The driving member 6b includes a driving source 6b1, and a telescopic member or winding member 6b2 connected to the driving source 6b1.

Specifically, when the driving member 6b is fixed on the top of the opening, the driving member 6b includes a rigid telescopic rod, a telescopic frame, etc. The top of the curtain 61 is shaded, thereby controlling the area of the opening that is opened. When the driving member 6b is fixed to the bottom of the opening, the driving member 6b includes a rigid telescopic rod, a telescopic frame and other telescopic members, and lifts the top of the shielding curtain 61 upward, thereby controlling the opening area of the opening. .

In the second type of embodiment, the adjusting mechanism adjusts the opening area of the opening by adjusting different positions on both sides of the shielding curtain 61 in the width direction.

The adjustment structure includes: a first fixing member connected to both sides of the shade curtain in the width direction, a second fixing member located on both sides of the opening width direction, at least part of the first fixing member and at least part of the The second fixing member cooperates to adjust the area of the shielding curtain to cover the opening. For example, if the first fixing member located at 1/2 of the height direction of the opening is fixed in cooperation with the second fixing member, the upper 1/2 area of the opening is opened and the lower half is blocked.

Specifically, the first fixing member and the second fixing member are zippers that cooperate with each other, and the zipper can be pulled to the corresponding position according to the area to be opened.

Or, the first fixing member and the second fixing member are Velcro stickers that cooperate with each other. Specifically, one of the first fixing member and the second fixing member is a strip-shaped structure extending in the up-down direction, and the other is a plurality of Velcro stickers arranged at intervals in the up-down direction. Or, the first fixing piece and the second fixing piece are a plurality of Velcro stickers arranged at intervals along the up-down direction. Both of the aforementioned two solutions can realize the opening of the opening step by step. Alternatively, the first fixing member and the second fixing member are both strip-shaped structures extending in the up-down direction, which can realize the stepless opening of the opening.

Or, the first fixing member and the second fixing member are mutually matched magnetic attraction members. Specifically, one of the first fixing member and the second fixing member is a strip-shaped structure extending in the up-down direction, and the other is a plurality of magnetic attraction members arranged at intervals in the up-down direction. Or, the first fixing member and the second fixing member are a plurality of magnetic attraction members arranged at intervals along the up-down direction. Both of the aforementioned two solutions can realize the opening of the opening step by step. Or, the first fixing member and the second fixing member are both strip-shaped structures extending in the up-down direction, which can realize the stepless opening of the opening.

Based on any of the above embodiments, the second fixing member 631 is directly or indirectly fixed at the opening of the box body. The fixed relationship between the second fixing member 631 and the thermal insulation box 40 includes but is not limited to:

In one embodiment, the second fixing member 631 is directly fixed on the thermal insulation box 40 .

In another embodiment, the opening of the thermal insulation box 40 is provided with a pair of uprights 63, and the pair of uprights 63 are located on both sides in the width direction of the opening. The second fixing member 631 is fixed on the upright column 63 , so as to be indirectly fixed on the thermal insulation box 40 ; or, the upright column 63 is a part of the thermal insulation box 40 . The second fixing member 631 is directly fixed on the thermal insulation box 40 .

Preferably, the second fixing members 631 on a pair of the uprights 63 are symmetrically arranged. The user can adjust the position of the first fixing member 62 according to the size of the frame body loaded with the goods and the height of the goods to be unloaded, so as to avoid the opening of the opening 44 from being too large, resulting in loss of cooling capacity.

As shown in FIG. 21 , the upright column 63 and the thermal insulation box 40 are provided separately. The anti-leakage cold structure 6 also includes a top beam 64 connected to the top of a pair of the uprights 63 . Fixed part 60 . Or, the anti-leakage cold structure 6 further includes a bottom beam 65 connected to the bottom of a pair of the uprights 63 , and at least one of the bottom beams 65 or the uprights 63 is provided with a bottom beam 65 for connecting with the thermal insulation box 40 . Fixed fixing part 60 . Or, the anti-leakage cooling structure 6 further includes a top beam 64 connected to the top of a pair of the uprights 63 and a bottom beam 65 connected to the bottom of a pair of the uprights 63. The top beam 64, the bottom beam 65 or all the At least one of the uprights 63 is provided with a fixing portion 60 for fixing with the thermal insulation box 40 .

At least one of the top beam 64 , the bottom beam 65 and the upright column 63 form a stable support frame, so the entire anti-leakage cold structure 6 can be directly fixed to the cold chain through the fixing portion 60 . on the box. When the vertical beam 23, the top beam 64 and the bottom beam 65 are all provided with the fixing parts 60, it is only necessary to fix the heat preservation box 40 through the fixing part 60 on one of them, and the other Components The fixing portion 60 is used to connect the aforementioned three components together.

In addition, based on any of the above-mentioned embodiments, the bottom of the shielding curtain 61 is preferably fixed, so air will not leak from the bottom of the opening, and the fixing methods include but are not limited to the following embodiments.

In one embodiment, the anti-leakage cooling structure 6 further includes a reel located at the bottom of the opening 44 and a driving member (not shown) for driving the reel to rotate around its central axis, and the bottom of the shade 61 is fixed to the On the reel, the driving member provides the reel with a force to wind the shade 61 on the reel; when releasing the force on the top and side of the shade 61, for example, the When the first fixing member and the second fixing member are disengaged from each other, the reel rotates under the action of the driving member, and the shade 61 is rolled on the reel to realize automatic storage. In one embodiment, the driving member is a torsion spring, which provides an elastic force to the reel, and drives the reel to rotate in a direction capable of accommodating the shade 61 .

In another embodiment, the anti-leakage cooling structure 6 further includes a receiving groove located at the bottom of the opening 44, and the bottom of the shielding curtain 61 is fixed to the receiving groove. When the opening 44 is opened, the shielding curtain 61 is accommodated in the receiving slot. Or, the bottom of the shielding curtain 61 is directly or indirectly fixed on the thermal insulation box 40 , and the shielding curtain 61 is stacked on the thermal insulation box 40 when the opening 44 is opened. Preferably, the reel and the receiving slot are fixed on the bottom of the upright column 63 or the bottom beam 65 , which is convenient for installation as a whole.

Any of the above-mentioned adjustment structures can be used in conjunction with any of the above-mentioned fixing methods of the bottom of the shielding curtain 61 .

In another broad category of embodiments, the leak-proof cold structure closes or opens the opening 44 by being expandable or foldable by itself.

As shown in FIG. 28 , the anti-leakage cold structure 6 includes a plurality of shielding plates 66 arranged in the up-down direction, and a flexible connecting member 67 connecting two adjacent shielding plates 66 . When the opening 44 is opened, the flexible connecting member 67 is bent so that the upper shielding plate 66 is bent and then folded to the inner or outer side of the lower shielding plate 66 . The lowermost piece of the shielding plate 66 is separately connected with the box body or pivotally connected with the box body, so as to facilitate opening of all the openings.

Or, as shown in FIGS. 29 and 30 , the anti-leakage cold structure 6 includes a plurality of shielding plates 66 arranged in the up-down direction, and the shielding plate 66 located below has a receiving cavity 68 for accommodating the shielding plate 66 above, When the opening 44 is closed, the shielding plate 66 is pulled upward; when the opening 44 is opened, the shielding plate 66 is pressed downward and accommodated in the receiving cavity 68 . Or, the upper shielding plate 66 has a accommodating cavity 68 for accommodating the lower shielding plate 66, and the operation direction is opposite to that of the previous embodiment. In the same way, the lowermost piece of the shielding plate 66 is separately connected with the box body or pivotally connected with the box body, so as to facilitate opening of all the openings.

In the above two embodiments, when each shielding plate 66 is opened to shield the opening, it is clamped and fixed with the thermal insulation box 40 by means of a fixing component 69, interference fit or the like. For the fixing component 69, reference may be made to the matching manner of the first fixing member 62 and the second fixing member 631 in the above-mentioned embodiment, and details are not described herein again.

Or, when each shielding plate 66 is in the state of shielding the opening, it is clamped and fixed with the adjacent shielding plate 66 by the holding member, so as to keep the expanded state. The structure of the holding member is not limited, as long as the two adjacent shielding plates 66 can be relatively fixed; Adjacent to the second holding member on the shielding plate 66, when the two adjacent shielding plates 66 are in an open state, the first holding member and the second holding member cooperate to make the two relatively fixed. The first holding member and the second holding member include, but are not limited to, hooks that cooperate with each other, buckles and slots that cooperate with each other, etc. Make adaptive adjustments.

Or, the anti-leakage cold structure includes a plurality of shielding plates arranged in the up-down direction, and the plurality of shielding plates have a first state arranged in the up-down direction to shield the opening, and are sequentially removed from top to bottom to open the opening. the second state. When not in use, several shielding plates can be removed and stacked on the box.

Or, the anti-leakage cold structure includes a folding curtain at the bottom of the opening, and a driving mechanism for driving the folding curtain to unfold or fold in the up-down direction.

In addition, on the basis of the above two types of embodiments, the part that shields the opening 44 in the anti-leakage cooling structure 6 is a transparent shield, which is convenient for observing the condition of the goods and ordering the goods. Specifically, the shielding curtain 61 is a transparent curtain. The shielding plate 66 is a transparent plate.

Depending on the level of anti-leakage cooling, when necessary, the unit distribution box 400 further includes a thermal insulation door 7 located outside the anti-leakage cooling structure 6 to open or close the opening 44, and the thermal insulation door 7 is a side door or a single door. Open the door.

The anti-leakage cold structure 6 and the unit distribution box 400 of the present invention can be loaded and used on cold chain transportation tools, including but not limited to cold chain transportation vehicles, cold chain transportation ships, and cold chain transportation aircraft.

In the present invention, not each embodiment only includes an independent technical solution, and this description in the description is only for the sake of clarity, and those skilled in the art can make structural, method, or functional transformations according to these embodiments. All are included in the protection scope of the present invention, and all equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

A unit distribution box, comprising: a storage room; a cool storage component, wherein the cool storage component includes a cool storage box and a cool storage agent located in the cool storage box; characterized in that, the unit distribution box further includes: a cooling supply component, the The cooling assembly includes a cooling supply pipe that communicates with the cooling storage tank, a cooling supply pump that drives the cooling storage medium to circulate in the cooling storage tank and the cooling supply pipe, and a part of the cooling supply pipe is located in the storage tank. The top of the chamber; an electronic control unit, which is connected in communication with the cooling pump.
The unit distribution box according to claim 1, wherein the storage room is formed by a top wall, a side wall and a bottom wall, and part of the cooling pipes are located on the top wall and/or the side wall the upper part of the wall.
The unit distribution box of claim 1, wherein the cooling assembly further comprises a water catch bar located below the cooling pipe at the top;

Or, the cooling assembly further includes a water receiving tray located at the top of the storage compartment, and the water receiving tray includes a water receiving portion located below the cooling pipe, connecting the adjacent water receiving portions. connection between;

Or, the cooling assembly further includes a water receiving tray located at the top of the storage compartment, and the water receiving tray includes a water receiving portion located below the cooling pipe, connecting the adjacent water receiving portions. The connecting part between the two parts, the connecting part is provided with a hole.
The unit distribution box according to claim 3, wherein the first end in the length direction of the water receiving strip is lower than the oppositely arranged second end; or, the first end in the length direction of the water receiving part is lower than the opposite Set the second end low.
The unit distribution box of claim 4, wherein:

The cooling assembly further includes a water guide groove located at the first end of the water receiving bars and communicated with all the water receiving bars, the water guide grooves are provided with a discharge port for discharging condensate water to the outside; The cooling assembly further includes a water guide groove located at the first end of the water receiving portion and communicated with all the water receiving portions, the water guide groove is provided with a discharge port for discharging condensed water to the outside.
The unit distribution box according to claim 1, wherein a thermal insulation board is provided between the cool storage component and the storage compartment, and the cooling supply pipe extends through the thermal insulation board to the storage room indoor; the cold storage assembly is located below the storage room, and the cooling supply pipe includes a liquid outlet pipe extending upward from the cold storage tank, a radiating pipe communicating with the liquid outlet pipe, and communicating with the radiating pipe and extends downward to the liquid return pipe of the cold storage tank, and the heat dissipation pipe is located at the top of the storage chamber.
The unit distribution box according to claim 6, wherein the storage room comprises a box body defining the storage room, a door body for opening or closing the storage room, the liquid outlet pipe, The liquid return pipe is located at the side edge of the box body or on the side wall of the box body.
The unit distribution box according to claim 7, wherein the storage room is formed by a top wall, a side wall and a bottom wall, and the heat dissipation pipes are serpentine or evenly distributed on the top wall; And/or, the heat dissipation pipe is arranged on the upper half of the side wall.
The unit distribution box according to claim 1, wherein the cooling assembly further comprises an indoor temperature sensor for detecting the temperature in the storage room, and the indoor temperature sensor is connected in communication with the electronic control unit.
The unit distribution box according to claim 1, wherein the cool storage assembly further comprises a cool storage pipe penetrated in the cool storage agent, and the inlet and the outlet of the cool storage pipe are exposed outside the cool storage box; The cold storage assembly further includes a temperature measurement assembly, and the temperature measurement assembly includes at least one temperature sensor disposed along the radial direction of the cold storage tube and spaced from the cold storage tube; or, the temperature measurement assembly includes a temperature sensor disposed on the cold storage tube at least two temperature sensors around the tube, the distances from the at least two temperature sensors to the cool storage tube along the radial direction of the cool storage tube are different; or, the temperature measurement assembly includes at least two temperature sensors arranged around the cool storage tube Two temperature sensors, the at least two temperature sensors are distributed at intervals along the extending direction of the regenerator tube, and the distance between two adjacent temperature sensors is not less than a first distance threshold.
The unit distribution box according to claim 10, characterized in that the cold storage agent is stored cold through a cold storage pipe pierced through the cold storage agent; Any one of the two temperature sensors acquires the temperature Ta of the cool storage agent; judges whether the temperature Ta reaches the temperature threshold To corresponding to the temperature sensor, if so, stops the cool storage; if not, periodically acquires the temperature Ta
The unit distribution box according to claim 10, characterized in that, cooling is supplied to the cold storage medium through a cold storage pipe passing through the cold storage medium; Any one of the at least two temperature sensors acquires the temperature Ta of the cool storage agent; determines whether the temperature Ta reaches the temperature threshold To corresponding to the temperature sensor, if so, stops cooling; if not, periodically acquires the temperature Ta.
The unit distribution box according to claim 10, wherein an electronic control unit is connected in communication with the temperature sensor, and at least one temperature threshold value To corresponding to each temperature sensor is set in the electronic control unit. ; Store cold for the cold storage agent through a cold storage tube that runs through the cold storage agent; obtain the temperature Ta of the cold storage agent through a temperature sensor arranged along the radial direction of the cold storage tube and spaced from the cold storage tube; determine whether the temperature Ta is When at least one of the multiple temperature thresholds To corresponding to the temperature sensor is reached, if so, the cold storage is stopped; if not, the temperature Ta is acquired periodically.
The unit distribution box according to claim 1, wherein the unit distribution box comprises a box body, the storage chamber and the cold storage assembly are located in the box body, and an outer side of the box body is provided with a receiving cavity , the motor of the cooling pump is located in the receiving cavity;

And/or, the unit distribution box further includes a battery assembly, and the battery assembly is electrically connected to the cooling assembly and the electronic control unit.
A cold chain system is characterized by comprising the unit distribution box of claim 1 .