Cold water drainage device of refrigerator van
By combining a layered design with a heated air box heating system and vibration-absorbing guide components, the blockage problem caused by icing and vibration in the condensate drainage system of the refrigerated compartment was solved, achieving efficient collection and directional discharge of condensate, ensuring stable operation of the refrigerated compartment and the quality of goods.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUZHOU XINGCHEN CARRIAGE MANUFACTURING CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-05-15
AI Technical Summary
The existing condensate drainage system in refrigerated trucks is prone to blockage due to icing and vibration, preventing condensate from flowing properly into the collection tank, which affects transportation efficiency, increases humidity inside the truck, and endangers the quality of goods.
The refrigerated interior compartment features a layered design, incorporating a manifold, water inlet, heating box, and ventilation duct system. Vibration is absorbed by vibration-absorbing guide components, heating rods prevent icing, and condensate is efficiently collected and directed through a drainage trough and drain valve.
It enables timely drainage of condensate, prevents frost and ice buildup on the inner walls of the refrigerated compartment, reduces the impact of vibration, ensures stable operation of the refrigerated compartment and the quality of goods, and improves transportation efficiency.
Smart Images

Figure CN224241122U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of cold water drainage equipment for refrigerated truck compartments, and in particular to a cold water drainage device for refrigerated truck compartments. Background Technology
[0002] As specialized equipment for transporting perishable foods, medicines, and other items requiring high temperature control, the stability and reliability of the internal temperature control system of refrigerated trucks are of great importance to ensuring the quality of the goods. In actual use, due to the large temperature difference between the inside and outside of refrigerated trucks, a large amount of condensation often forms on the inner walls of the truck.
[0003] Existing refrigerated truck compartments typically employ a simple water collection structure, with a collection trough and drainage pipes installed at the bottom of the compartment for drainage. However, this traditional structure has several shortcomings in practical applications: First, the interior of a refrigerated truck compartment is constantly in a low-temperature environment, easily leading to the formation of frost and ice layers on the inner walls. This icing can block the water inlets and drainage channels, preventing condensate from flowing properly into the collection trough. Second, vibrations during vehicle operation can exacerbate icing, accelerating blockages in the drainage system. Third, traditional drainage devices lack effective anti-icing measures; once icing occurs, operation must be stopped for manual de-icing, severely impacting transportation efficiency. Finally, poor condensate drainage can increase humidity inside the compartment, affecting cargo quality and potentially causing damage. Therefore, this application designs a cold water drainage device for refrigerated truck compartments to address the aforementioned problems. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a cold water diversion device for refrigerated truck compartments.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cold water diversion device for a refrigerated truck compartment, comprising a refrigerated inner compartment, the refrigerated inner compartment being fixedly installed inside the refrigerated truck compartment, the refrigerated inner compartment being divided into an outer shell and an inner shell, the lower end of the outer shell of the refrigerated inner compartment being provided with a vibration-absorbing and guiding component, the lower end of the inner wall of the inner shell being provided with a converging groove, water diversion holes being spaced apart on the converging groove, a flow-gathering component being provided between the lower end of the inner shell and the outer shell of the refrigerated inner compartment, a heating box being installed on the outer layer of the outer shell of the refrigerated inner compartment, and a ventilation duct communicating with the heating box being provided on the inner layer of the outer shell of the refrigerated inner compartment.
[0006] Preferably, the vibration-absorbing guide assembly consists of two sway limiting seats and a connecting shaft. One end of the connecting shaft is fixed to one sway limiting seat, and the other end of the connecting shaft passes through the other sway limiting seat. A vibration spring is sleeved on the connecting shaft between the two sway limiting seats.
[0007] Preferably, the flow-gathering component consists of a water-draining and collecting trough and a drain valve. The water-draining and collecting trough is located at the lower end of the outer shell of the refrigerated inner compartment. The water-draining and collecting trough is connected to a water inlet. The drain valve is installed on the side of the water-draining and collecting trough and is connected to it.
[0008] Preferably, multiple heating rods are evenly installed in the heating box, and a storage box for supplying power to the heating rods is installed on the inner wall of the heating box.
[0009] Preferably, a blower is installed on the warm air box at the end of the ventilation duct, and the ventilation duct is equidistantly wrapped around the outer wall of the inner shell.
[0010] Preferably, the outer shell of the refrigerated inner compartment is attached to the inner wall of the refrigerated compartment, one of the sway limiting seats is fixed to the inner shell, and the other sway limiting seat is fixed to the lower end of the inner wall of the refrigerated compartment.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, through the layered design of the inner and outer shells, combined with the ingenious layout of the confluence channel and the water inlet, efficient collection and directional guidance of condensate are achieved. Furthermore, through the coordinated operation of the water collection channel and the drain valve, condensate is ensured to be discharged from the outside of the compartment in a timely manner, preventing moisture damage to the goods. Additionally, the equidistantly installed heating rods inside the heater box and the ventilation duct system surrounding the outer wall of the inner shell, combined with the forced circulation effect of the blower, effectively prevent frost and ice formation on the inner walls of the compartment due to low temperatures. Simultaneously, the sway limiting seat and vibration spring in the vibration-absorbing guide assembly significantly reduce the impact of driving vibrations on the drainage system, ensuring stable operation of the device. Ultimately, this solves the problem of ice formation on the inner walls of existing refrigerated truck compartments affecting the operation of the drainage device. Attached Figure Description
[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this utility model;
[0014] Figure 2 This is a three-dimensional structural diagram of the ventilation duct proposed in this utility model;
[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the water diversion and collection trough proposed in this utility model;
[0016] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the heater box proposed in this utility model.
[0017] The numbers in the diagram are: 1. Refrigerated inner compartment; 2. Inner shell; 3. Manifold; 4. Heater box; 5. Drainage and water collection tank; 6. Shaking restraint seat; 7. Vibration spring; 8. Ventilation duct; 9. Drain valve; 10. Blower; 11. Heating rod; 12. Water inlet. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0019] Example: See Figure 1-4 This utility model discloses a cold water diversion device for a refrigerated truck compartment, comprising a refrigerated inner compartment 1, which is fixedly installed inside the refrigerated truck compartment. The refrigerated inner compartment 1 is divided into an outer shell and an inner shell 2. The lower end of the outer shell of the refrigerated inner compartment 1 is provided with a vibration-absorbing and guiding component. The lower end of the inner wall of the inner shell 2 is provided with a converging groove 3, and water diversion holes 12 are spaced apart on the converging groove 3. A flow-gathering component is provided between the lower end of the inner shell 2 and the outer shell of the refrigerated inner compartment 1. A heater box 4 is installed on the outer layer of the outer shell of the refrigerated inner compartment 1. The inner layer of the outer shell of the carriage 1 is equipped with a ventilation duct 8 that connects to the heater box 4. The design of the refrigerated inner carriage 1 divides the carriage into an outer shell and an inner shell 2, and is equipped with structures such as vibration-absorbing guide components, a manifold 3, and a water inlet 12, which effectively realizes the automatic collection and drainage of condensate, avoiding potential damage to goods due to moisture accumulation. At the same time, the setting of the heater box 4 and the ventilation duct 8 ensures the balanced control of the carriage's icing temperature. The vibration-absorbing guide component consists of two sway limiting seats 6 and a connecting shaft, connecting... One end of the connecting shaft is fixed to a sway limiting seat 6, and the other end of the connecting shaft passes through another sway limiting seat 6. A vibration spring 7 is sleeved on the connecting shaft between the two sway limiting seats 6. The structural design of the vibration-absorbing and guiding assembly, through the frame formed by the two sway limiting seats 6 and the connecting shaft, in conjunction with the vibration spring 7, effectively absorbs the vibration during vehicle operation, thereby allowing the refrigerated inner compartment 1 to sway stably up and down, making it easier for ice to fall off during de-icing. The flow-gathering assembly consists of a water-draining and collecting trough 5 and a drain valve 9. The water-draining and collecting trough 5 is located at the lower end of the outer shell of the refrigerated inner compartment 1 and is connected to the water inlet 12. The drain valve 9 is connected to the side end of the water-draining and collecting trough 5. The design of the flow-gathering assembly, through the cooperation of the water-draining and collecting trough 5 and the drain valve 9, achieves effective collection and directional discharge of condensate, preventing condensate from accumulating inside the compartment, reducing humidity, and improving the quality of the refrigerated environment.
[0020] In this invention, multiple heating rods 11 are evenly spaced in the heater box 4, and a power storage box for supplying power to the heating rods 11 is installed on the inner wall of the heater box 4. The equidistant installation of the multiple heating rods 11 in the heater box 4 and the configuration of the power storage box ensure the uniformity of the heating system and independent power supply capability, effectively preventing frost and ice formation on the inner wall of the carriage, and improving the reliability and efficiency of the temperature control system. A blower 10 is installed on the heater box 4 at the end of the ventilation duct 8, and the ventilation duct 8 is equidistantly wrapped around the outer wall of the inner shell 2. The blower 10 is installed at the end of the ventilation duct 8, and the ventilation duct 8 wraps around the outer wall of the inner shell 2. The wall design enables all-round circulation of warm air, ensuring uniform temperature distribution inside the compartment and preventing condensation and icing caused by excessively low local temperatures. The outer shell of the refrigerated inner compartment 1 is attached to the inner wall of the refrigerated compartment, with one sway limiting seat 6 fixed to the inner shell 2 and another sway limiting seat 6 fixed to the lower end of the inner wall of the refrigerated compartment. The close fit between the outer shell of the refrigerated inner compartment 1 and the inner wall of the refrigerated compartment, as well as the fixing method of the sway limiting seat 6, improves the overall structural stability, ensures the effective operation of the vibration absorption system, reduces structural damage during long-distance transportation, and extends the service life of the device.
[0021] Working Principle: In the application of this invention, a storage box is first installed in the heater box 4. When the refrigerated compartment is running, the temperature difference between the internal low temperature environment and the external temperature causes water vapor to condense into water droplets on the inner surface of the inner shell 2. Under the action of gravity, this condensate flows downward along the inner wall of the inner shell 2 and eventually collects in the confluence channel 3 opened at the lower end of the inner wall of the inner shell 2. The water inlet holes 12 opened at intervals on the confluence channel 3 allow the water flow to be guided in an orderly manner to the space between the outer shell and the inner shell 2. After passing through the water inlet holes 12, the water flows into the drainage collection tank 5 set at the lower end of the outer shell of the refrigerated inner compartment 1. The drainage collection tank 5, as the main part of the flow collection component, is responsible for collecting all the condensate guided by the water inlet holes 12. When the collected water reaches a certain amount, the water can be discharged outside the compartment through the drain valve 9 to avoid the accumulation of moisture from adversely affecting the goods. To prevent the inner wall of the compartment from frosting and freezing due to low temperature, the heater box 4 is installed on the outer layer of the outer shell of the refrigerated inner compartment 1. Multiple heating rods 11, equidistantly installed inside the heater box 4, generate heat when powered by the battery. This heat is transferred to the area around the inner shell 2 via ventilation ducts 8 connected to the heater box 4. The ventilation ducts 8 are equidistantly arranged around the outer wall of the inner shell 2 to ensure uniform heat distribution. A blower 10 installed on the heater box 4 at the end of the ventilation ducts 8 promotes air circulation and accelerates heat transfer efficiency. During vehicle operation, to reduce the impact of vibration on the refrigeration system, the device is designed with vibration-absorbing guide components. Two sway limiting seats 6 are fixed to the lower ends of the inner shell 2 and the inner wall of the refrigerated compartment, respectively, and connected by a connecting shaft. Vibration springs 7 fitted on the connecting shaft effectively absorb vibrations generated during operation, protecting the stable operation of the refrigeration system. Overall, this refrigerated compartment cold water drainage device, through its rational structural design, achieves effective collection and drainage of condensate, balanced temperature control within the compartment, and effective vibration absorption, improving the stability and reliability of refrigerated transportation. This concludes the device's usage.
[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A cold water diversion device for a refrigerated truck compartment, comprising a refrigerated inner compartment (1), characterized in that: The refrigerated inner compartment (1) is fixedly installed inside the refrigerated compartment. The refrigerated inner compartment (1) is divided into an outer shell and an inner shell (2). The lower end of the outer shell of the refrigerated inner compartment (1) is provided with a vibration-absorbing and guiding component. The lower end of the inner wall of the inner shell (2) is provided with a flow channel (3). Water inlet holes (12) are spaced apart on the flow channel (3). A flow-gathering component is provided between the lower end of the inner shell (2) and the outer shell of the refrigerated inner compartment (1). A heater box (4) is installed on the outer layer of the outer shell of the refrigerated inner compartment (1). A ventilation duct (8) connected to the heater box (4) is provided on the inner layer of the outer shell of the refrigerated inner compartment (1).
2. The cold water diversion device for a refrigerated truck compartment according to claim 1, characterized in that: The vibration-absorbing guide assembly consists of two sway limiting seats (6) and a connecting shaft. One end of the connecting shaft is fixed on one sway limiting seat (6), and the other end of the connecting shaft passes through the other sway limiting seat (6). A vibration spring (7) is sleeved on the connecting shaft between the two sway limiting seats (6).
3. A cold water diversion device for a refrigerated truck compartment according to claim 2, characterized in that: The flow-gathering component consists of a water-collecting trough (5) and a drain valve (9). The water-collecting trough (5) is located at the lower end of the outer shell of the refrigerated inner compartment (1). The water-collecting trough (5) is connected to the water inlet (12). The drain valve (9) is connected to the side of the water-collecting trough (5) and is connected to the water-collecting trough (5).
4. A cold water diversion device for a refrigerated truck compartment according to claim 3, characterized in that: Multiple heating rods (11) are installed at equal intervals in the heating box (4), and an energy storage box for supplying power to the heating rods (11) is installed on the inner side wall of the heating box (4).
5. A cold water diversion device for a refrigerated truck compartment according to claim 4, characterized in that: A blower (10) is installed on the warm air box (4) at the end of the ventilation duct (8), and the ventilation duct (8) is equidistantly wrapped around the outer wall of the inner shell (2).
6. A cold water diversion device for a refrigerated truck compartment according to claim 5, characterized in that: The outer shell of the refrigerated inner compartment (1) is attached to the inner wall of the refrigerated compartment, one of the shaking limiting seats (6) is fixed on the inner shell (2), and the other shaking limiting seat (6) is fixed at the lower end of the inner wall of the refrigerated compartment.