Defrosting device for cold chain transportation
By introducing a motor-driven spray pipe for position adjustment and a heating block to prevent freezing into the cold chain transportation device, combined with a scraper to remove the frost layer, the problems of the existing device's single spray defrosting method and limited range are solved, thus improving the defrosting effect and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU DONGXUAN AGRICULTURAL PRODUCTS CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-05-01
AI Technical Summary
Existing cold chain transport equipment cannot simultaneously scrape during spray defrosting, resulting in a single defrosting function with poor effectiveness, and the spraying range cannot be expanded.
A defrosting device for cold chain transportation was designed, comprising a cleaning assembly consisting of a spray pipe, a motor-driven threaded rod, a heating block, and a scraper. The position of the spray pipe is adjusted by the motor, the heating block prevents the spray holes from freezing, and the scraper removes the frost layer.
It expands the range and improves the effect of spray defrosting, ensures the stability and continuity of defrosting work, and solves the problem of decreased defrosting effect after scraper wear.
Smart Images

Figure CN224184252U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of defrosting devices, and more specifically, it relates to a defrosting device for cold chain transportation. Background Technology
[0002] Refrigerated trucks play a core role in cold chain logistics, primarily ensuring food safety and the quality of fresh food. Frost often forms or thick layers of frost inside the transport compartment of refrigerated trucks, which melt slowly and affect the use of the transport compartment. Therefore, defrosting devices are needed to remove the frost.
[0003] Although the existing device can perform spray defrosting, it cannot perform scraping defrosting at the same time as spray defrosting, resulting in a single defrosting function and poor defrosting effect; the existing device cannot be improved to achieve multiple expansions of the spray range during spray defrosting. Utility Model Content
[0004] To address the aforementioned technical problems, this utility model provides a defrosting device for cold chain transportation, which solves the problem that although existing devices can perform spray defrosting, they cannot perform scraping defrosting at the same time, resulting in a single defrosting function and poor defrosting effect; and that existing devices cannot achieve multiple expansions of the spray range during spray defrosting through improvements.
[0005] The purpose and effect of this utility model's defrosting device for cold chain transportation are achieved through the following specific technical means:
[0006] A defrosting device for cold chain transportation includes a carriage; inside the carriage is a shelf for placing items, two guide rods are fixed inside the carriage, a seat slides on the two guide rods, a spray pipe is fixed on the seat, a motor is fixed on the right end face of the inner wall of the carriage, the motor is electrically connected to the vehicle's battery, and a No. 1 threaded rod is fixed on the output shaft of the motor, the No. 1 threaded rod is threaded to the seat.
[0007] The vehicle body has a water tank fixed on the top of the compartment, a cover plate fixed on the top of the water tank, a water pump installed inside the water tank, and the water pump's drain pipe connected to the spray pipe; a heating pipe is fixed inside the water tank, and the heating pipe is electrically connected to the vehicle's battery, and the heating pipe has a corrugated structure.
[0008] The spray pipe is a cylindrical tubular structure, and spray holes are arranged in a fan-shaped array on the lower part of the outer wall of the spray pipe.
[0009] A heating block is fixed on the seat and is electrically connected to the vehicle battery. The heating block has an arc-shaped structure and its inner wall is in contact with the outer wall of the top of the spray pipe.
[0010] The defrosting assembly consists of the guide rod, base, spray pipe, motor, first threaded rod, water tank, heating pipe, cover plate, heating block, and spray hole. The base is equipped with a cleaning assembly, which consists of a sliding seat, a second threaded rod, and a scraper. A sliding seat slides on the base, and a scraper is fixed to the bottom surface of the sliding seat. The scraper contacts the top surface of the placement frame. A second threaded rod is threadedly connected to the base, and the lower end of the second threaded rod rotates on the sliding seat.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] The motor in this device drives the No. 1 threaded rod to rotate, which can flexibly adjust the position of the spray pipe. Combined with the fan-shaped array of spray holes below the spray pipe, it greatly expands the range and effect of spray defrosting. The corrugated heating tube in the water tank increases the contact area with the liquid, significantly improving the heating efficiency of the liquid and providing liquid at a suitable temperature for defrosting.
[0013] This application utilizes a heating block to heat the spray pipe, effectively preventing the spray nozzles from freezing and ensuring the continuous and stable operation of the defrosting process.
[0014] This application provides dual protection for defrosting work through the setting of the cleaning assembly. When the base moves, the scraper can scrape off the top surface of the placement frame to remove frost, and by rotating the No. 2 threaded rod, the scraper can be fed, effectively solving the problem of reduced defrosting effect after scraper wear. Attached Figure Description
[0015] Figure 1 This is an axial view structural schematic diagram of the defrosting device for cold chain transportation according to this utility model.
[0016] Figure 2 This is a split-axis view of the defrosting device for cold chain transportation according to this utility model.
[0017] Figure 3 This is a schematic diagram of the left side of the defrosting device for cold chain transportation according to this utility model.
[0018] Figure 4 This is a utility model Figure 2 A schematic diagram of the rotated axial view structure.
[0019] Figure 5 This is a utility model Figure 4 A magnified structural diagram at point A.
[0020] In the diagram, the correspondence between component names and drawing numbers is as follows:
[0021] 1. Carriage; 101. Placement rack; 2. Defrosting assembly; 201. Guide rod; 202. Seat; 203. Spray pipe; 204. Motor; 205. Threaded rod No. 1; 206. Water tank; 207. Heating tube; 208. Cover plate; 209. Heating block; 210. Spray hole; 3. Cleaning assembly; 301. Sliding seat; 302. Threaded rod No. 2; 303. Scraper. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0023] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The use of terms such as "a," "an," or "the" in this utility model patent application specification and claims does not indicate a quantity limitation, but rather indicates the presence of at least one. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.
[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.
[0025] Example 1: As shown in the attached document Figure 1 To be continued Figure 5 As shown:
[0026] This utility model provides a defrosting device for cold chain transportation, including a carriage 1; a shelf 101 for placing items is placed inside the carriage 1, two guide rods 201 are fixed inside the carriage 1, a seat 202 slides on the two guide rods 201, a spray pipe 203 is fixed on the seat 202, a motor 204 is fixed on the right end face of the inner wall of the carriage 1, the motor 204 is electrically connected to the vehicle's battery, a first threaded rod 205 is fixed on the output shaft of the motor 204, the first threaded rod 205 is threaded to the seat 202, when the position of the spray pipe 203 is adjusted, the motor 204 is driven to rotate, the motor 204 drives the first threaded rod 205 to rotate, under the thread drive of the first threaded rod 205, the position of the seat 202 and the spray pipe 203 can be adjusted, thus expanding the spray defrosting effect.
[0027] The vehicle body 1 has a water tank 206 fixed on the top, a cover plate 208 fixed on the top of the water tank 206, a water pump installed inside the water tank 206, and the water pump's drain pipe connected to the spray pipe 203. A heating pipe 207 is fixed inside the water tank 206 and is electrically connected to the vehicle's battery. The heating pipe 207 has a corrugated structure. When heating the liquid in the water tank 206, the power to the heating pipe 207 can be turned on. The corrugated structure of the heating pipe 207 can improve the heating effect of the liquid in the water tank 206.
[0028] The spray pipe 203 is a cylindrical tubular structure. Spray holes 210 are arranged in a fan-shaped array on the lower part of the outer wall of the spray pipe 203. During use, the defrosting range can be expanded through the fan-shaped array of spray holes 210.
[0029] The defrosting assembly 2 consists of a guide rod 201, a base 202, a spray pipe 203, a motor 204, a first threaded rod 205, a water tank 206, a heating pipe 207, a cover plate 208, a heating block 209, and a spray hole 210. A cleaning assembly 3 is installed on the base 202. The cleaning assembly 3 consists of a sliding seat 301, a second threaded rod 302, and a scraper 303. A sliding seat 301 slides on the base 202. A scraper 303 is fixed to the bottom surface of the 01. The scraper 303 contacts the top surface of the placement frame 101. A second threaded rod 302 is threadedly connected to the seat 202. The lower end of the second threaded rod 302 rotates on the sliding seat 301. When the seat 202 moves, the scraper 303 can scrape and defrost the top surface of the placement frame 101. When the scraper 303 is worn, rotating the second threaded rod 302 can feed the scraper 303.
[0030] Example 2: Based on Example 1, a heating block 209 is fixed on the base 202. The heating block 209 is electrically connected to the vehicle battery. The heating block 209 has an arc-shaped structure. The inner wall of the heating block 209 contacts the outer wall of the top of the spray pipe 203. During use, when the power supply to the heating block 209 is turned on, the heat generated by the heating block 209 can heat the spray pipe 203. Heating the spray pipe 203 can prevent the subsequent spray holes 210 from freezing and affecting defrosting.
[0031] Working principle: During defrosting, the power supply to the heating block 209 and the heating tube 207 is turned on simultaneously. The heat emitted by the heating block 209 heats the spray pipe 203 for defrosting, and the heat emitted by the heating tube 207 heats the water in the water tank 206. After heating is completed, the water pump in the water tank 206 is started. The water pump delivers the heated liquid to the spray pipe 203 and sprays it out from the spray hole 210 for defrosting. At the same time, the drive motor 204 can be rotated. The motor 204 drives the first threaded rod 205 to rotate. Under the thread drive of the first threaded rod 205, the position of the seat 202 and the spray pipe 203 can be adjusted. When the seat 202 moves, the scraper 303 can scrape the top surface of the placement frame 101 for defrosting. When the scraper 303 is worn, rotating the second threaded rod 302 can feed the scraper 303.
[0032] Although this application has been described with reference to the foregoing embodiments, those skilled in the art will understand that various changes can be made without departing from the spirit and scope of this application as defined by the appended claims. While this specification contains details of many specific implementations, these should not be construed as limiting the scope of the claims, but rather as descriptions of features specific to particular embodiments. The scope of this application is defined by the appended claims and their equivalents, and is not limited to the embodiments described above.
Claims
1. A defrosting device for cold chain transportation, characterized in that: The vehicle includes a carriage (1); inside the carriage (1) is a shelf (101) for placing items. Two guide rods (201) are fixed inside the carriage (1). A seat (202) slides on the two guide rods (201). A spray pipe (203) is fixed on the seat (202). A motor (204) is fixed on the right end of the inner wall of the carriage (1). The motor (204) is electrically connected to the vehicle's battery. A threaded rod (205) is fixed on the output shaft of the motor (204). The threaded rod (205) is threaded onto the seat (202).
2. The defrosting device for cold chain transportation as described in claim 1, characterized in that: A water tank (206) is fixed on the top of the compartment (1), and a cover plate (208) is fixed on the top of the water tank (206). A water pump is installed inside the water tank (206), and the drain pipe of the water pump is connected to the spray pipe (203). A heating pipe (207) is fixed inside the water tank (206), and the heating pipe (207) is electrically connected to the vehicle's battery. The heating pipe (207) has a wavy structure.
3. The defrosting device for cold chain transportation as described in claim 2, characterized in that: The spray pipe (203) is a cylindrical tubular structure, and spray holes (210) are arranged in a fan-shaped array on the lower part of the outer wall of the spray pipe (203).
4. The defrosting device for cold chain transportation as described in claim 3, characterized in that: A heating block (209) is fixed on the seat (202). The heating block (209) is electrically connected to the vehicle battery. The heating block (209) has an arc-shaped structure. The inner wall of the heating block (209) is in contact with the outer wall of the top of the spray pipe (203).
5. The defrosting device for cold chain transportation as described in claim 4, characterized in that: The guide rod (201), seat (202), spray pipe (203), motor (204), first threaded rod (205), water tank (206), heating pipe (207), cover plate (208), heating block (209) and spray hole (210) together form the defrosting assembly (2). The seat (202) is equipped with a cleaning assembly (3). The cleaning assembly (3) consists of a sliding seat (301), a second threaded rod (302) and a scraper (303). A sliding seat (301) slides on the seat (202).
6. The defrosting device for cold chain transportation as claimed in claim 5, wherein: A scraper (303) is fixed on the bottom surface of the sliding seat (301). The scraper (303) is in contact with the top surface of the placement frame (101). A second threaded rod (302) is threadedly connected to the seat body (202). The lower end of the second threaded rod (302) rotates on the sliding seat (301).