A novel drainage self-evaporation device with adaptive capacity

By designing an adaptive drainage and self-evaporation device in the refrigerated display case, using a guide hood to concentrate high-temperature exhaust air to accelerate evaporation, and combining a liquid level sensor and a liquid level controller to monitor the water level, and using a PTC heating plate for adaptive adjustment, the heating components do not directly contact the water body. An overflow outlet and a drain tank are set up for redundant protection, which solves the problems of low evaporation efficiency, easy corrosion of heating and unstable water level control of existing devices, and achieves efficient and reliable condensate treatment.

CN224381894UActive Publication Date: 2026-06-19BOKE COLD CHAIN TECH SUZHOU CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BOKE COLD CHAIN TECH SUZHOU CO LTD
Filing Date
2025-07-17
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing self-evaporating drainage devices in commercial refrigerated display cases suffer from limited evaporation efficiency, easy corrosion of heating components, low reliability of water level control, and easy overflow when the device fails, making it difficult to meet the demand for large drainage volumes.

Method used

A novel self-evaporating drainage device with adaptive capability was designed. It utilizes a wind guide hood to concentrate high-temperature exhaust air to accelerate evaporation, combines multi-point liquid level sensors and a liquid level controller to monitor the water level, adopts a PTC heating plate to adaptively adjust heating, and sets up an overflow outlet and a drainage tank for redundant protection.

Benefits of technology

It improves evaporation efficiency, prevents corrosion of heating components, enhances the reliability of water level control, reduces energy waste, and prevents overflow in case of failure, thereby improving the stability and ease of use of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to drainage self -evaporation device technical field discloses a novel drainage self -evaporation device with self -adaptation ability, including refrigerator, the bottom of refrigerator is equipped with mounting seat, is equipped with compression condensing unit in mounting seat, compression condensing unit includes compressor, condenser, condenser and compressor are arranged in mounting seat and are distributed before and after, and the self -evaporation device is equipped between compressor and condenser in mounting seat, and condenser is equipped with wind scooper on the side close to self -evaporation device, the symmetrical fan of wind scooper is equipped with, and the front end of mounting seat is equipped with condenser cabin cover, the self -evaporation device includes base, and base fixed mounting is in mounting seat, and the top of base is equipped with water tank, and water tank is located behind wind scooper, and a plurality of evaporation paper are equipped in water tank, the utility model discloses through wind scooper heat gathering exhaust, PTC heating plate is external, and multi -point liquid level sensing control, and self -evaporation device can draw out and set overflow drain and drain tank, and the efficiency is promoted, and the energy consumption and the fault are reduced, and the maintenance is convenient.
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Description

Technical Field

[0001] This utility model relates to the technical field of drainage self-evaporation devices, and in particular to a novel drainage self-evaporation device with adaptive capabilities. Background Technology

[0002] Currently, there are three main methods for drainage in refrigerated display cases: First, condensate is directly discharged from the freezer via an external drain pipe; second, a water pump is installed inside the freezer to force the condensate to a designated location for discharge; and third, a self-evaporating drainage device is used, which increases the evaporation area by heating the water or using absorbent materials, combined with forced airflow to evaporate the water into the air. Among these, the self-evaporating drainage device is widely used in various types of refrigerated display cases because it requires no external piping or additional power supply.

[0003] However, existing self-evaporating drainage devices have significant shortcomings in practical use: some devices rely on additional fans for airflow, but the air temperature is at room temperature, resulting in limited evaporation efficiency; if relying solely on natural convection, the evaporation capacity is even less able to meet the large drainage requirements of commercial freezers; in terms of heating methods, heating using the compressor exhaust pipe results in limited temperature and complex piping that is prone to corrosion, while direct heating with heating elements also carries the same risk of corrosion; water level control largely relies on float switches, which are prone to malfunction due to the dirty drainage from freezers; more importantly, when the device's function weakens or malfunctions, condensate is prone to overflow, especially for open freezers and other equipment with large drainage volumes, causing great inconvenience to users and becoming a technical challenge and a common pain point reported by users in the refrigeration and freezing equipment industry. Utility Model Content

[0004] In view of the problems of the existing drainage self-evaporation device, such as limited evaporation efficiency, easy corrosion of heating components, low reliability of water level control, and easy overflow when the function fails, it is difficult to meet the drainage needs of commercial refrigerated display cabinets. Therefore, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a novel drainage self-evaporation device with adaptive capability, including a freezer, wherein the bottom of the freezer is provided with a mounting base, and a compression condenser unit is provided inside the mounting base;

[0006] The compressor-condenser unit includes a compressor and a condenser. The condenser and the compressor are arranged front and rear in a mounting base. A self-evaporation device is provided in the mounting base between the compressor and the condenser. An air guide shroud is provided on the side of the condenser near the self-evaporation device. Fans are symmetrically arranged in the air guide shroud. A condenser compartment cover is provided at the front end of the mounting base.

[0007] The self-evaporating device includes a base, which is fixedly installed in a mounting bracket. A water tank is provided on the top of the base and is located behind the air guide hood. Several evaporation papers are provided in the water tank.

[0008] As a preferred embodiment, the self-evaporating device further includes a liquid level sensor module, which is disposed on one side of the water tank. An overflow port is provided on the side wall of the water tank near the liquid level sensor module. A mounting bracket is provided on the side of the water tank near the liquid level sensor module, and a drain tank is slidably installed in the mounting bracket. One end of the overflow port is connected to a water guide pipe for supplying condensate to the drain tank. A water inlet is provided on the top of the drain tank. A box is provided above the mounting bracket, and a liquid level controller is provided inside the box. A heating component is provided on the inner side of the base.

[0009] As a preferred embodiment, the heating assembly includes a bracket, which is fixedly installed in the base. A PTC heating plate is provided on the top of the bracket, and the PTC heating plate is electrically connected to the liquid level controller.

[0010] As a preferred embodiment, the mounting bracket is provided with a fixing bracket on one side of the top, the fixing bracket is fixedly connected to the box body, the top of the fixing bracket is fixedly connected to the water pipe, and a baffle is detachably installed at the symmetrical mounting bracket on one side of the front end of the mounting base.

[0011] As a preferred embodiment, the top of the drainage tank is provided with a flow guide groove, and the flow guide groove corresponds to the water guide pipe, with one end of the flow guide groove connected to the water inlet.

[0012] As a preferred embodiment, the liquid level sensor module is equipped with three liquid level sensors, and the multiple liquid level sensors in the liquid level sensor module are arranged in descending order of height. The liquid level sensor module is electrically connected to the liquid level controller.

[0013] As a preferred embodiment, the mounting base is provided with mesh plates on both sides, and the mesh plates are detachably connected to the mounting base by screws.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] 1. This utility model gathers the high-temperature exhaust air from the condenser through the air guide hood and blows it directly onto the evaporation paper, using its high air temperature to accelerate evaporation without the need for an additional fan, thus reducing energy consumption; at the same time, the PTC heating plate is placed at the bottom of the water tank, which not only avoids the problem of corrosion in the water immersion environment, but also can adaptively adjust the power according to temperature changes, improving heating efficiency while reducing energy waste, effectively meeting the large drainage requirements of commercial freezers.

[0016] 2. This utility model uses a multi-point liquid level sensor in conjunction with a liquid level controller to realize water level monitoring, replacing the float switch that is prone to dirt and malfunction, reducing failures caused by drainage impurities; the self-evaporation device is designed as a structure that can be pulled out as a whole, which facilitates the maintenance and replacement of evaporation paper and equipment maintenance, reducing the difficulty of daily inspection and repair.

[0017] 3. By adding an overflow outlet and a drain tank, this utility model allows condensate to be directed into the drain tank through the overflow outlet when the device's function is weakened or malfunctions, avoiding the inconvenience caused by direct overflow. Furthermore, the detachable baffle allows for easy removal of the drain tank for temporary drainage, providing users with time for reporting and handling repairs. This is especially suitable for scenarios with large drainage volumes, such as open-type freezers, improving the stability of equipment operation and user convenience. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a top view of the internal structure of the mounting base of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure between the condenser, the air guide shroud, and the self-evaporating device of this utility model;

[0021] Figure 4 This is a schematic diagram of the self-evaporation device of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the water tank and box body of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure between the water tank and the liquid level sensor module of this utility model;

[0024] Figure 7 This is a schematic diagram of the structure between the bracket and the PTC heating plate of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Freezer; 2. Mounting bracket; 3. Compressor; 4. Condenser; 5. Self-evaporating device; 6. Air guide hood; 7. Condenser compartment cover; 8. Mesh plate; 9. Fan; 10. Water tank; 11. Evaporation paper; 12. Liquid level sensor module; 13. Overflow outlet; 14. Mounting bracket; 15. Fixing bracket; 16. Water guide pipe; 17. Box body; 18. Liquid level controller; 19. Drain tank; 20. Flow guide channel; 21. Water inlet; 22. Bracket; 23. PTC heating plate; 24. Base; 25. Baffle. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Reference Figure 1 - Figure 7As shown, a novel self-evaporating drainage device with adaptive capabilities is provided, including a freezer 1, a mounting base 2 at the bottom of the freezer 1, and a compressor-condenser unit inside the mounting base 2; the compressor-condenser unit includes a compressor 3 and a condenser 4, which are arranged front and rear within the mounting base 2; a self-evaporating device 5 is provided between the compressor 3 and the condenser 4 inside the mounting base 2; an air guide 6 is provided on the side of the condenser 4 near the self-evaporating device 5; fans 9 are symmetrically arranged inside the air guide 6; and a condenser compartment cover 7 is provided at the front end of the mounting base 2; by distributing the condenser 4 and compressor 3 front and rear and placing the self-evaporating device 5 between them, combined with the air guide 6, the exhaust air from the condenser 4 can be efficiently concentrated, and the airflow can be enhanced by the fans 9, thereby improving the heat dissipation and evaporation support for the self-evaporating device 5, optimizing the spatial layout, and improving the efficiency of condensate treatment;

[0029] The self-evaporating device 5 includes a base 24, which is fixedly installed in the mounting base 2. A water tank 10 is provided on the top of the base 24, and the water tank 10 is located behind the air guide 6. Several evaporation papers 11 are provided in the water tank 10. The water tank 10 is located behind the air guide 6 and can directly receive the hot air discharged from the condenser 4. The evaporation paper 11 can increase the evaporation area through its water absorption characteristics, improve the contact efficiency between the condensate and the hot air, enhance the natural evaporation capacity, and reduce additional energy consumption.

[0030] In this example, the self-evaporating device 5 also includes a liquid level sensor module 12, which is located on one side of the water tank 10. An overflow port 13 is provided on the side wall of the water tank 10 near the liquid level sensor module 12. A mounting bracket 14 is provided on the side of the water tank 10 near the liquid level sensor module 12. A drain tank 19 is slidably installed in the mounting bracket 14. One end of the overflow port 13 is connected to a water guide pipe 16 for supplying condensate to the drain tank 19. A water inlet 21 is provided on the top of the drain tank 19. A box 17 is provided above the mounting bracket 14. A liquid level controller 18 is provided in the box 17. A heating component is provided inside the base 24. The liquid level sensor module 12 and the liquid level controller 18 work together to accurately monitor the water level and link the heating component. The overflow port 13, the water guide pipe 16 and the drain tank 19 form redundant protection to prevent condensate from overflowing when the device fails. The slidably installed drain tank 19 is easy to remove and empty, improving ease of use and equipment reliability.

[0031] In this example, the heating component includes a bracket 22, which is fixedly installed inside the base 24. A PTC heating plate 23 is provided on the top of the bracket 22, and the PTC heating plate 23 is electrically connected to the liquid level controller 18. The PTC heating plate 23 is installed inside the base 24 through the bracket 22, and does not directly contact the water body to avoid corrosion. Its electrical connection with the liquid level controller 18 can realize adaptive start and stop of heating according to the water level, which not only ensures heating efficiency but also saves energy consumption, improving the durability and energy efficiency of the device.

[0032] In this example, a fixing frame 15 is provided on one side of the top of the mounting frame 14. The fixing frame 15 is fixedly connected to the box body 17. The top of the fixing frame 15 is fixedly connected to the water guide pipe 16. A baffle 25 is detachably installed on the symmetrical mounting frame 14 on one side of the front end of the mounting base 2. The fixing frame 15 can stably support the box body 17 and the water guide pipe 16 to ensure reliable structural connection. The detachable baffle 25 facilitates the maintenance and replacement of the drainage tank 19 inside the mounting frame 14, improving the convenience of equipment maintenance.

[0033] In this example, a guide channel 20 is provided on the top of the drain tank 19, and the guide channel 20 corresponds to the water pipe 16. One end of the guide channel 20 is connected to the water inlet 21. The guide channel 20 and the water pipe 16 are set to guide the condensate water to flow accurately into the water inlet 21, avoiding water overflow and waste or pollution, and improving the water receiving efficiency and cleanliness of the drain tank 19.

[0034] In this example, the liquid level sensor module 12 is equipped with three liquid level sensors, and the multiple liquid level sensors in the liquid level sensor module 12 are arranged in descending order of height. In this example, the three sensors are referred to as A, B, and C from high to low, with C being the common point. The liquid level sensor module 12 is electrically connected to the liquid level controller 18. The arrangement of the multi-point liquid level sensors from high to low can realize accurate monitoring of different water levels, provide multi-level signal feedback to the liquid level controller 18, make the start and stop control of the heating component more precise, avoid dry burning or insufficient heating, and improve the reliability of water level control.

[0035] In this example, both sides of the mounting base 2 are provided with mesh plates 8, and the mesh plates 8 are detachably connected to the mounting base 2 by screws; the mesh plates 8 can enhance the air circulation inside and outside the mounting base 2, assist the cooling of the compressor condenser unit, and the detachable design facilitates the cleaning and maintenance of internal components, ensuring the long-term stable operation of the equipment.

[0036] The working principle of this new type of drainage self-evaporation device is as follows: the condensate produced by the freezer 1 flows into the water tank 10 of the self-evaporation device 5 through the drain outlet of the freezer 1. The evaporation paper 11 in the water tank 10 absorbs moisture due to its strong water absorption, increasing the contact area with the air.

[0037] When the compressor-condenser unit is running, the high-temperature and high-pressure gaseous refrigerant generated by the compressor 3 enters the condenser 4. The condenser 4 draws in ambient air from the front condenser compartment cover 7. The high-temperature exhaust air formed after heat exchange is gathered by the air guide shroud 6 and blown directly onto the evaporation paper 11. The high temperature of the exhaust air accelerates the evaporation of moisture on the surface of the evaporation paper 11.

[0038] When the ambient humidity is high and the amount of condensate produced exceeds the natural evaporation capacity, the water level in the water tank 10 rises. The level sensor 11 detects that the water level has risen to position A and transmits the signal to the level controller 18. The controller then activates the PTC heating plate 23 located at the bottom of the water tank 10 to heat the water in the water tank 10, further increasing the evaporation rate. When the water level drops to position B, the level controller 18 controls the PTC heating plate 23 to stop working, realizing adaptive heating control and avoiding energy waste.

[0039] If the device's function weakens or malfunctions, such as aging of the evaporation paper or failure of the heating plate, and the water level continues to rise to the overflow outlet 13, the condensate will flow into the drain tank 19 through the overflow outlet 13 for temporary storage and processing, thus avoiding overflow and inconvenience and forming a redundant protection mechanism.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A new type of drainage self-evaporation device with adaptive capacity, comprising a refrigerator (1), characterized in that: The freezer (1) is provided with a mounting base (2) at the bottom, and a compressor condenser unit is provided inside the mounting base (2); The compressor-condenser unit includes a compressor (3) and a condenser (4). The condenser (4) and the compressor (3) are arranged in a mounting base (2) in a front-to-back manner. A self-evaporating device (5) is provided in the mounting base (2) between the compressor (3) and the condenser (4). A wind guide shroud (6) is provided on the side of the condenser (4) near the self-evaporating device (5). Fans (9) are symmetrically arranged in the wind guide shroud (6). A condenser nacelle cover (7) is provided at the front end of the mounting base (2). The self-evaporation device (5) includes a base (24), and the base (24) is fixedly installed in the mounting base (2). The top of the base (24) is provided with a water tank (10), and the water tank (10) is located behind the air guide hood (6). The water tank (10) is provided with a number of evaporation papers (11).

2. The novel self-evaporating drainage device with adaptive capability according to claim 1, characterized in that: The self-evaporation device (5) also includes a liquid level sensor module (12), and the liquid level sensor module (12) is located on one side of the water tank (10). An overflow port (13) is provided on the side wall of the water tank (10) near the liquid level sensor module (12). A mounting bracket (14) is provided on the side of the water tank (10) near the liquid level sensor module (12). A drain tank (19) is slidably installed in the mounting bracket (14). One end of the overflow port (13) is connected to a water pipe (16) for conveying condensate to the drain tank (19). A water inlet (21) is provided on the top of the drain tank (19). A box (17) is provided above the mounting bracket (14). A liquid level controller (18) is provided in the box (17). A heating component is provided on the inner side of the base (24).

3. A novel self-evaporating drainage device with adaptive capability according to claim 2, characterized in that: The heating assembly includes a bracket (22), which is fixedly installed in the base (24). The top of the bracket (22) is provided with a PTC heating plate (23), and the PTC heating plate (23) is electrically connected to the liquid level controller (18).

4. A novel self-evaporating drainage device with adaptive capability according to claim 3, characterized in that: The mounting bracket (14) has a fixed bracket (15) on one side of its top. The fixed bracket (15) is fixedly connected to the box body (17). The top of the fixed bracket (15) is fixedly connected to the water pipe (16). A baffle (25) is detachably installed at the symmetrical mounting bracket (14) on one side of the front end of the mounting base (2).

5. A novel self-evaporating drainage device with adaptive capability according to claim 4, characterized in that: The top of the drainage tank (19) is provided with a guide groove (20), and the guide groove (20) corresponds to the water pipe (16). One end of the guide groove (20) is connected to the water inlet (21).

6. A novel self-evaporating drainage device with adaptive capability according to claim 5, characterized in that: The liquid level sensor module (12) is equipped with three liquid level sensors, and the multiple liquid level sensors in the liquid level sensor module (12) are arranged in order from high to low. The liquid level sensor module (12) is electrically connected to the liquid level controller (18).

7. A novel self-evaporating drainage device with adaptive capability according to claim 2, characterized in that: The mounting base (2) is provided with mesh plates (8) on both sides, and the mesh plates (8) are detachably connected to the mounting base (2) by screws.