Phase change cold storage device and refrigerator compartment only using phase change cold storage device for refrigeration

Abstract

The utility model relates to a phase change cold storage device and a refrigerated van only using the phase change cold storage device for refrigeration, which comprises a mounting frame and a cold storage plate group arranged in the mounting frame, the cold storage plate group comprises a fixing rod and a plurality of cold storage plates, a phase change cold storage agent is packaged in each cold storage plate, the cold storage plates are arranged on the fixing rod in a penetrating manner, and the phase change cold storage plates are fixed on the fixing rod. The multiple cold storage plates are fixed to the fixing rods at intervals, multiple sliding ways in the horizontal direction are arranged on the installation frame, and the two ends of the fixing rods are supported in the sliding ways respectively.

Description

Technical Field

[0001] This utility model relates to the technical field of refrigerated transport equipment, specifically to a phase change cold storage device and a refrigerated truck that uses only the phase change cold storage device for cooling. Background Technology

[0002] Refrigerated transport vehicles are special vehicles used to transport low-temperature and fresh goods, and are widely used in the food, pharmaceutical, and chemical industries.

[0003] Currently, refrigeration of refrigerated transport vehicles is mainly achieved through on-board refrigeration units, which include structures such as compressors, condensers, evaporators, and expansion valves. These units can maintain a low-temperature environment inside the vehicle for extended periods and are typically driven by the vehicle's engine or an independent diesel engine. However, during long-term operation or in high-temperature environments, on-board refrigeration units significantly increase fuel consumption, leading to a substantial increase in operating costs. Furthermore, on-board refrigeration units require regular maintenance, including refrigerant replacement, condenser cleaning, and compressor inspection, resulting in high overall maintenance costs. Utility Model Content

[0004] In view of the deficiencies of the prior art described above, the technical problem to be solved by this utility model is to provide a phase change cold storage device and a refrigerated truck compartment that uses only the phase change cold storage device for cooling, which can accurately control the temperature inside the refrigerated truck compartment and has low energy consumption.

[0005] To achieve the above objectives, this utility model provides a phase change cold storage device, including an installation frame and a cold storage plate assembly disposed in the installation frame. The cold storage plate assembly includes a fixed rod and multiple cold storage plates, each of which is encapsulated with a phase change cold storage agent. The cold storage plates pass through the fixed rod, and the multiple cold storage plates are fixed to the fixed rod at intervals. The installation frame is provided with multiple horizontal slides, and the two ends of the fixed rod are respectively supported in the slides.

[0006] Furthermore, the slide rail is provided with a limiting ring to restrict the sliding of the fixed rod.

[0007] Furthermore, the mounting frame is provided with mounting and dismounting holes.

[0008] Furthermore, a load-bearing square tube is provided on the top of the mounting frame, the length extension direction of the load-bearing square tube is perpendicular to the length extension direction of the slide, and the loading and unloading hole communicates with the inner cavity of the load-bearing square tube.

[0009] This utility model also provides a refrigerated compartment, including the phase change cold storage device as described above, and a compartment body. The interior of the compartment body is divided into a cargo compartment and a cold storage compartment by a baffle. The phase change cold storage device is installed in the cold storage compartment. The baffle is provided with an air supply outlet and an air return outlet that connect the cold storage compartment and the cargo compartment. A blower is provided at the air supply outlet.

[0010] Furthermore, it also includes a temperature control device, which includes a temperature sensor and a fan controller. The temperature sensor is installed in the cargo compartment and connected to the fan controller, which is electrically connected to the air supply fan.

[0011] Furthermore, the cold storage chamber is equipped with a mounting frame for fixing the phase change cold storage device.

[0012] Furthermore, it also includes a drainage structure, which includes a water receiving tray and a drain pipe disposed on the water receiving tray. The water receiving tray is disposed at the bottom of the fixed frame, and one end of the drain pipe is connected to the water receiving tray, while the other end passes through the wall panel of the compartment and extends to the outside of the compartment.

[0013] Furthermore, the cargo compartment is equipped with a first insulated door, and the cold storage compartment is equipped with a second insulated door.

[0014] Furthermore, both the first and second insulated doors are equipped with sealing components.

[0015] As described above, the phase change cold storage device and the refrigerated truck using only the phase change cold storage device for refrigeration involved in this utility model have the following beneficial effects:

[0016] 1. The installed cold storage plate group can complete independent cooling without the installation cost and fuel consumption of vehicle-mounted refrigeration unit. In addition, the cold storage plate group can use off-peak electricity for centralized charging and cooling, resulting in low operating costs.

[0017] 2. The entire mounting frame and cold storage plate assembly can be quickly replaced using a forklift, resulting in short replacement time and low labor requirements;

[0018] 3. The cold storage plates are set in the installation frame by sliding rails. The number of cold storage plate groups in the installation frame can be flexibly adjusted according to the actual situation such as the cooling requirements of the transported goods and the transportation distance, so as to meet the needs of different transport vehicles and different goods. They can also be quickly replaced and are easy to use.

[0019] 4. The temperature control device can control the speed of the air supply fan, enabling precise temperature control inside the refrigerated compartment;

[0020] 5. The cold storage plate assembly is installed at one end of the refrigerated truck compartment, which solves the problem of water dripping from the cold storage device installed on the roof of the refrigerated truck compartment. Moreover, the number of cold storage plate assemblies that can be installed is much greater than the number of those traditionally installed on the roof of the refrigerated truck compartment, resulting in a larger cooling capacity. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the phase change cold storage device in this utility model.

[0022] Figure 2This is a side view of the phase change cold storage device in this utility model.

[0023] Figure 3 This is a schematic diagram of the cold storage plate assembly in this utility model.

[0024] Figure 4 for Figure 1 Enlarged view of point a in the middle.

[0025] Figure 5 This is a schematic diagram of the structure of the refrigerated compartment in this utility model.

[0026] Figure 6 for Figure 5 Cross-sectional view at point AA along the middle.

[0027] Figure 7 for Figure 6 Enlarged view of point b in the middle.

[0028] Figure 8 for Figure 5 Cross-sectional view at the middle edge BB.

[0029] Figure 9 for Figure 5 Cross-sectional view at the center CC.

[0030] Figure 10 for Figure 9 A magnified view of point c in the middle.

[0031] Figure 11 for Figure 5 The D-direction view in the image.

[0032] Explanation of icon numbers

[0033] 1. Installation frame, 101. Slide rail, 102. Limiting ring, 103. Loading and unloading hole, 104. Loading and unloading square tube, 2. Cold storage plate assembly, 201. Fixing rod, 202. Cold storage plate, 3. Body, 301. Cargo compartment, 302. Cold storage compartment, 303. Baffle, 304. Air outlet, 305. Return air outlet, 306. Air supply fan, 307. Fixing bracket, 308. Support leg, 4. Temperature sensor, 5. Drainage structure, 501. Water receiving tray, 502. Drain pipe, 6. First insulation door, 7. Second insulation door. Detailed Implementation

[0034] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.

[0035] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0038] See Figures 1 to 4 This utility model provides a phase change cold storage device, including an installation frame 1 and a cold storage plate group 2 disposed in the installation frame 1. The cold storage plate group 2 includes a fixing rod 201 and multiple cold storage plates 202. Each cold storage plate 202 is encapsulated with a phase change cold storage agent. The cold storage plates 202 pass through the fixing rod 201, and the multiple cold storage plates 202 are fixed to the fixing rod 201 at intervals. Preferably, there are two fixing rods 201, which can improve the stability of the overall structure of the cold storage plate group 2. The installation frame 1 is provided with multiple horizontal slide rails 101. The two ends of the fixing rod 201 are respectively supported in the slide rails 101. Preferably, the installation frame 1 is a straight quadrangular prism frame structure, including twelve side edges. Slide rails 101 are provided on any two adjacent parallel side edges of the installation frame 1.

[0039] The basic working principle of the phase change cold storage device involved in this utility model is as follows: When the phase change cold storage device is needed for refrigeration, according to the actual situation such as the cold demand of the transported goods and the transport distance, the cold storage plate group 2 can be quickly installed into the mounting frame 1 or removed from the mounting frame 1 through the slide 101 and the fixing rod 201, and the number of cold storage plate groups 2 in the mounting frame 1 can be flexibly adjusted; When the phase change cold storage device is charged, on the one hand, the mounting frame 1 and the cold storage plate group can be placed in the quick-freezing room as a whole to charge the cold storage plate, and centralized charging can be carried out during off-peak electricity hours, which has a low operating cost; on the other hand, the cold storage plate group 2 can also be removed from the mounting frame 1 for individual charging according to the actual situation.

[0040] See Figures 1 to 4 The present invention will be further described below with reference to a specific embodiment:

[0041] In this embodiment, see Figure 1 , Figure 2 and Figure 4 As a preferred design, the slide rail 101 is provided with a limiting ring 102 to restrict the sliding of the fixing rod 201. The limiting ring 102 can facilitate the fixing of the cold storage plate group 2 in the slide rail 101. Preferably, each fixing rod 201 in the slide rail 101 is provided with a limiting ring 102. When part of the cold storage plate group 2 in the slide rail 101 is removed, it can prevent the remaining cold storage plate group 2 from shifting during transportation, prevent the cold storage plate group 2 from colliding with each other due to accidents, and improve the safety of the phase change cold storage device. In other embodiments, the limiting ring 102 can also be provided only on the outermost fixing rod 201 in the slide rail 101, which is more convenient for the quick installation of the cold storage plate group 2.

[0042] In this embodiment, see Figure 2 As a preferred design, the mounting frame 1 is provided with loading and unloading holes 103 to facilitate the handling of the phase change cold storage device using forklifts or other means.

[0043] In this embodiment, see Figure 1 and Figure 2 As a preferred design, a load-bearing square tube 104 is provided on the top of the mounting frame 1. The length extension direction of the load-bearing square tube 104 is perpendicular to the length extension direction of the slide 101. The loading and unloading hole 103 communicates with the inner cavity of the load-bearing square tube 104. When using forklifts or other means to transport the phase change cold storage device, the load-bearing square tube 104 can ensure the strength of the load.

[0044] See Figures 5 to 11This utility model also provides a refrigerated truck compartment that uses only a phase change cold storage device for cooling, including the phase change cold storage device as described above, and a compartment body 3. The interior of the compartment body 3 is divided into a cargo compartment 301 and a cold storage compartment 302 by a baffle 303. The phase change cold storage device is installed in the cold storage compartment 302. The baffle 303 is provided with an air supply vent 304 and a return air vent 305 that connect the cold storage compartment 302 and the cargo compartment 301. An air supply fan 306 is provided at the air supply vent 304. Preferably, the air supply vent 304 and the return air vent 305 are respectively located at the upper and lower parts of the baffle 303. Preferably, a filter screen is provided at the return air vent 305, which can effectively filter dust and other impurities in the interior of the compartment body 3 and keep the interior of the refrigerated truck compartment clean.

[0045] The basic working principle of the refrigerated truck compartment using only a phase change cold storage device for cooling, as disclosed in this utility model, is as follows: When transporting goods using this refrigerated truck compartment, the air supply fan 306 at the air outlet 304 is turned on. On the one hand, the air supply fan 306 can deliver the cold energy generated by the cold storage plate group 2 from the cold storage chamber 302 to the cargo chamber 301. Furthermore, the air volume can be adjusted by changing the rotation speed of the air supply fan 306, thereby adjusting the cold release rate of the phase change cold storage plate group and thus precisely controlling the temperature inside the compartment. On the other hand, the rotation speed of the air supply fan 306 can also affect the amount of cold energy that the goods can access, further improving the cooling effect. By placing the entire phase change cold storage device in a quick-freezing warehouse and charging it during off-peak electricity hours, it features low investment, fast replacement of phase change cold storage materials, low operating costs, high temperature control accuracy inside the compartment, and reduced carbon emissions. Through the cooling capacity provided by the phase change cold storage device, the refrigerated truck compartment can continuously provide more cooling capacity at low cost during long-distance transportation or in high-temperature environments, avoiding the cost surge caused by long-term operation.

[0046] See Figures 5 to 11 The present invention will be further described below with reference to a specific embodiment:

[0047] In this embodiment, see Figure 5 , Figure 8 ,and Figure 9As a preferred design, a temperature control device is also included. The temperature control device includes a temperature sensor 4 and a fan controller. The temperature sensor 4 is installed in the cargo compartment 301 and connected to the fan controller. The fan controller is electrically connected to the air supply fan 306. The temperature sensor 4 monitors the temperature of the cargo, and the fan controller controls the speed of the air supply fan 306 according to the temperature of the cargo, thereby achieving precise control of the temperature inside the cargo compartment 301. Specifically, when the temperature inside the cargo compartment 301 is higher than the set temperature, the fan controller controls the air supply fan 306 to automatically increase the speed, thereby increasing the air volume, increasing the cold release rate of the cold storage plate group 2, increasing the cooling capacity, and the temperature inside the cargo compartment 301 begins to decrease. When the temperature inside the cargo compartment 301 is lower than the set temperature, the fan controller controls the air supply fan 306 to automatically decrease the speed, thereby decreasing the air volume, decreasing the cold release rate of the cold storage plate group 2, decreasing the cooling capacity, and the temperature inside the cargo compartment 301 begins to rise.

[0048] In this embodiment, see Figure 5 , Figure 6 , Figure 7 and Figure 10 As a preferred design, the cold storage chamber 302 is provided with a mounting frame 307 for fixing the phase change cold storage device. Preferably, the bottom of the mounting frame 307 is provided with a support leg 308, which can provide support for the mounting frame 307.

[0049] In this embodiment, see Figure 5 , Figure 6 , Figure 7 and Figure 10 As a preferred design, it also includes a drainage structure 5, which includes a water receiving tray 501 and a drain pipe 502 disposed on the water receiving tray. The water receiving tray 501 is disposed at the bottom of the fixing frame 307. One end of the drain pipe 502 is connected to the water receiving tray 501, and the other end passes through the wall panel of the compartment 3 and extends to the outside of the compartment 3. The water receiving tray 501 can store the condensate generated by the cold storage plate group 2 and discharge it to the outside of the compartment 3 through the drain pipe 502 to avoid the condensate from contaminating the goods.

[0050] In this embodiment, see Figure 5 and Figure 11 As a preferred design, the cargo compartment 301 is equipped with a first insulated door 6, and the cold storage compartment 302 is equipped with a second insulated door 7. The first insulated door 6 facilitates the handling of goods into the cargo compartment 301, and the second insulated door 7 facilitates the handling of the cold storage plate assembly 2 and the mounting frame 1 into the cold storage compartment 302 and placing them on the fixed frame 307.

[0051] In this embodiment, see Figure 5 and Figure 11As a preferred design, both the first insulation door 6 and the second insulation door 7 are equipped with sealing components, which can reduce the entry of high-temperature external gas into the inner cavity of the compartment 3 through the gaps between the first insulation door 6 and the second insulation door 7, thereby further improving the insulation effect.

[0052] In this embodiment, the number of cold storage plate groups 2 required in the phase change cold storage device can be calculated based on all the heat load generated by the refrigerated compartment during the transportation of goods. That is, the mass of the cold storage plate 202 required by the refrigerated compartment during transportation is M=Q×T×3600×δ / q.

[0053] Where Q represents all the heat load generated during transportation, and further, Q = Q1 + Q2 + Q3 + Q4;

[0054] Wherein, Q1 is the heat transferred from the outside to the refrigerated compartment through the body 3 of the refrigerated compartment, in kW; Q2 is the heat entering the refrigerated compartment through the gaps of the first insulated door 6 and the second insulated door 7, in kW; Q3 is the heat of the goods themselves, that is, the cooling capacity required to cool down and maintain the low temperature of the goods, in kW; Q4 is the heat generated by the blower 306, in kW.

[0055] Where T represents the transit time of refrigerated trucks, in hours (h).

[0056] Wherein, δ represents the congestion safety factor, which is selected based on the congestion situation on the road, and is usually δ≥1.2;

[0057] Where q is the calorific value of the cold storage plate 202;

[0058] Specifically, taking the transportation of live seafood in refrigerated trucks as an example:

[0059] The temperature of live seafood is taken as 0℃; the temperature inside cargo compartment 301 is taken as -5℃, which is the temperature inside cargo compartment 301 when live seafood is being cooled and kept at a low temperature; the transit time T of the refrigerated compartment is taken as 15h; the congestion safety factor δ is taken as 1.2; the outside temperature is taken as 40℃; the calorific value q of the cold storage plate 202 is 226kJ / Kg; the dimensions of the refrigerated compartment body 3 are 4m long × 2.1m wide × 2.2m high. Through calculation, Q1 is 0.64kW, Q2 is 0.2kW, Q3 is 0.1kW, and Q4 is 0.3kW; substituting the above into the formula M=Q×T×3600×δ / q, then M=355.5Kg; therefore, the weight of the cold storage plate 202 should not be less than 355.5Kg.

[0060] As can be seen from the above, the phase change cold storage device and refrigerated compartment of this utility model have the following beneficial effects:

[0061] 1. The installed cold storage plate group 2 can complete independent cooling without the installation cost and fuel consumption of vehicle-mounted refrigeration units. In addition, the cold storage plate group 2 can use off-peak electricity for centralized charging and cooling, resulting in low operating costs.

[0062] 2. The entire installation frame 1 and cold storage plate assembly 2 can be quickly replaced using a forklift, with short replacement time and low labor requirements;

[0063] 3. The cold storage plate 202 is set in the mounting frame 1 through the slide rail 101. The number of cold storage plate groups 2 in the mounting frame 1 can be flexibly adjusted according to the actual situation such as the cold demand of the transported goods and the transport distance, so as to meet the needs of different transport vehicles and different goods. It can also be quickly replaced and is easy to use.

[0064] 4. The temperature control device can control the speed of the air supply fan 306, enabling precise temperature control inside the refrigerated compartment;

[0065] 5. The cold storage plate group 2 is installed at one end of the refrigerated compartment, which solves the problem of water dripping from the cold storage device installed on the roof of the refrigerated compartment. Moreover, the number of cold storage plate groups that can be installed is much greater than the number of traditional ones installed on the roof of the refrigerated compartment, resulting in a larger cooling capacity.

[0066] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0067] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A phase change cold storage device, characterized in that: The system includes an installation frame (1) and a cold storage plate assembly (2) disposed in the installation frame (1). The cold storage plate assembly (2) includes a fixing rod (201) and multiple cold storage plates (202). Each cold storage plate (202) is encapsulated with a phase change cold storage agent. The cold storage plates (202) pass through the fixing rod (201), and multiple cold storage plates (202) are fixed to the fixing rod (201) at intervals. The installation frame (1) is provided with multiple horizontal slides (101), and the two ends of the fixing rod (201) are respectively supported in the slides (101).

2. The phase change cold storage device according to claim 1, characterized in that: The slide (101) is provided with a limiting ring (102) for restricting the sliding of the fixed rod (201).

3. The phase change cold storage device according to claim 2, characterized in that: The mounting frame (1) is provided with mounting and dismounting holes (103).

4. The phase change cold storage device according to claim 3, characterized in that: The top of the mounting frame (1) is provided with a load-bearing square tube (104), the length extension direction of the load-bearing square tube (104) is perpendicular to the length extension direction of the slide (101), and the loading and unloading hole (103) communicates with the inner cavity of the load-bearing square tube (104).

5. A refrigerated truck compartment that uses only a phase change cold storage device for cooling, characterized in that: The device includes the phase change cold storage device according to any one of claims 1-4, and further includes a compartment (3). The compartment (3) is divided into a cargo compartment (301) and a cold storage compartment (302) by a baffle (303). The phase change cold storage device is installed in the cold storage compartment (302). The baffle (303) is provided with an air supply port (304) and a return air port (305) connecting the cold storage compartment (302) and the cargo compartment (301). A blower (306) is provided at the air supply port (304).

6. The refrigerated compartment according to claim 5, characterized in that: It also includes a temperature control device, which includes a temperature sensor (4) and a fan controller. The temperature sensor (4) is located in the cargo compartment (301) and connected to the fan controller, which is electrically connected to the air supply fan (306).

7. The refrigerated compartment according to claim 5, characterized in that: The cold storage chamber (302) is provided with a mounting bracket (307) for fixing the phase change cold storage device.

8. The refrigerated compartment according to claim 7, characterized in that: It also includes a drainage structure (5), which includes a water receiving tray (501) and a drain pipe (502) disposed on the water receiving tray. The water receiving tray (501) is disposed at the bottom of the fixing frame (307). One end of the drain pipe (502) is connected to the water receiving tray (501), and the other end passes through the wall panel of the compartment (3) and extends to the outside of the compartment (3).

9. The refrigerated compartment according to claim 5, characterized in that: The cargo compartment (301) is provided with a first insulated door (6), and the cold storage compartment (302) is provided with a second insulated door (7).

10. The refrigerated compartment according to claim 9, characterized in that: Both the first heat-insulating door (6) and the second heat-insulating door (7) are equipped with sealing components.

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