A dual-temperature-zone independent refrigeration drawer-type storage device

Abstract

This application discloses a dual-temperature zone independent refrigeration drawer-type storage device, including a cabinet with an upper refrigeration chamber and a lower refrigeration chamber that are isolated from each other. The upper and lower drawers are respectively pulled out and installed in their respective chambers, and each has a drawer circulation vent. A compressor and a condenser are installed at the bottom of the cabinet, and an evaporator is independently configured in the upper and lower refrigeration chambers, thereby forming a physically isolated dual refrigeration circuit. This completely solves the temperature zone coupling problem caused by the shared cold source in traditional single evaporator systems. With the help of the drawer circulation vent and the independent evaporator, the cold air circulation between the chamber and the drawer can be quickly established, which significantly improves the temperature recovery speed after the door is opened and the overall temperature control accuracy.

Description

Technical Field

[0001] This application relates to the field of refrigeration equipment technology, specifically to a dual-temperature zone independent refrigeration drawer-type storage device. Background Technology

[0002] Currently, most common small-scale constant-temperature storage devices on the market (such as wine cabinets and cigar cabinets) adopt a single refrigeration space design, meaning the entire unit uses a single evaporator and air duct system. Upper and lower zones are physically separated by dampers or baffles, and temperature control algorithms adjust the airflow ratio to achieve zoned temperature control. While this approach is simple in structure and low in cost, it is essentially still a temperature simulation zoning system under a single refrigeration loop.

[0003] However, when the set temperatures of the two zones differ significantly (for example, the upper zone is set to 12°C for red wine and the lower zone to 6°C for white wine), the distribution of cooling capacity becomes difficult to dynamically balance. The lower-temperature zone requires continuous cooling, while the higher-temperature zone, sharing the same evaporator surface temperature, is easily over-cooled, leading to frequent compressor starts and stops or the actual temperature of the higher-temperature zone being far below the set value. Furthermore, a large amount of cold air leaks out when the door is opened, and the single-evaporator system recovers to steady state slowly, further exacerbating temperature zone coupling disturbances.

[0004] Therefore, there is an urgent need for a refrigeration system that can completely isolate the two temperature zones at the physical level in order to achieve truly independent and stable dual-temperature storage. Summary of the Invention

[0005] This application proposes a dual-temperature zone independent cooling drawer-type storage device, which fundamentally eliminates thermal coupling between temperature zones by configuring independent evaporators and air duct systems for the upper and lower storage units, thereby achieving truly independent and stable dual-temperature storage.

[0006] To achieve the above objectives, the present application adopts the following technical solution: This application proposes a dual-temperature zone independent cooling drawer-type storage device, including a cabinet, wherein the cabinet is provided with an upper cooling chamber and a lower cooling chamber that are isolated from each other; An upper drawer and a lower drawer, wherein the upper drawer is removably disposed within the upper refrigeration chamber, and the lower drawer is removably disposed within the lower refrigeration chamber; The upper and lower drawers are each equipped with a drawer air circulation vent. A compressor and a condenser, wherein the compressor and the condenser are located at the bottom of the housing; Two sets of evaporators, one set of which is located in the upper refrigeration chamber and the other set of which is located in the lower refrigeration chamber.

[0007] Thus, this application, by setting up mutually isolated upper and lower refrigeration chambers within the cabinet and independently configuring evaporators in each chamber, creates a physically isolated dual refrigeration loop between the upper and lower temperature zones, completely avoiding the temperature zone coupling problem caused by sharing a cold source in traditional single-evaporator systems. Simultaneously, each of the upper and lower drawers is equipped with a drawer circulation vent, which, together with the independent evaporator, allows for rapid establishment of cold air circulation between the chambers and the drawers, improving the temperature recovery speed after opening the door and enhancing the overall temperature control accuracy.

[0008] In some possible implementations, the bottom front end of the housing is provided with a heat dissipation vent, the bottom rear end is provided with a support plate for supporting the compressor, and the condenser is disposed between the heat dissipation vent and the support plate.

[0009] In some possible implementations, a baffle plate and a condenser cooling fan are also included, the baffle plate being disposed at the lower end of the condenser and the condenser cooling fan being disposed at the end of the condenser away from the heat dissipation vent.

[0010] In some possible implementations, the flow guide plate is provided with flow-cutting ribs, and the housing is provided with a main controller outside the flow-cutting ribs.

[0011] In some possible implementations, the upper refrigeration chamber and the lower refrigeration chamber are each provided with an evaporation circulation fan, which is located at the upper end of the corresponding evaporator.

[0012] In some possible implementations, an upper cavity mounting plate and a lower cavity mounting plate are respectively disposed in the upper refrigeration chamber and the lower refrigeration chamber, and the evaporator and the evaporation circulation fan are both mounted on the corresponding mounting plates.

[0013] In some possible implementations, the upper refrigeration chamber is provided with one evaporation circulation fan, and the lower refrigeration chamber is provided with two evaporation circulation fans.

[0014] In some possible implementations, the lower refrigeration chamber is provided with a clearance portion at the location corresponding to the compressor.

[0015] In some possible implementations, the upper and lower refrigeration chambers are provided with condensate drainage channels at the lower end of the corresponding evaporators.

[0016] In some possible implementations, a condensate collection box is also provided at the rear end of the housing. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of the drawer-type refrigeration device of this application; Figure 2 yes Figure 1A diagram showing the drawer in the middle with the drawer open; Figure 3 This is a bottom view of the air deflector in its disassembled state; Figure 4 This is a rear interior view of a drawer-type refrigeration unit; Figure 5 This is a top view of a drawer-type refrigeration unit and a cross-sectional view at point A. Figure 6 This is an interior view of the upper drawer; Figure 7 This is an interior view of the lower drawer; Figure 8 yes Figure 1 A diagram showing the state of the drawer being removed from the middle; Figure 9 yes Figure 8 An internal view of the mounting plate in its detached state. Detailed Implementation

[0018] The following examples further illustrate the features of this application and other related features in detail, so as to facilitate understanding by those skilled in the art: It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions in the attached diagrams, while the terms “bottom surface,” “top surface,” “inner,” and “outer” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0019] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this case based on the specific circumstances.

[0020] This application relates to a dual-temperature zone independent cooling drawer-type storage device, suitable for small-scale constant-temperature storage scenarios requiring high temperature accuracy and zone independence, such as wine cabinets for storing red and white wine separately, or constant-humidity and temperature cabinets for storing cigars and tea separately. In typical usage scenarios, users often need to set the upper layer to 12°C to suit the aging environment of red wine, while setting the lower layer to 6°C to meet the refrigeration needs of white wine. However, most existing products use a single evaporator combined with damper adjustment to achieve zoning. When the temperature difference between the two zones is large, the continuous cooling of the lower zone leads to passive overcooling of the higher zone, frequent compressor start-stop, and poor temperature control stability; moreover, a large amount of cold air escapes after opening the door to remove items, the system recovers slowly, and temperature zone disturbances are significant.

[0021] To address the aforementioned problems, this application proposes a drawer-type storage device with physical isolation and dual-circuit independent cooling. Please refer to... Figures 1 to 4 Specifically, the drawer-type storage device includes a housing 1, whose interior is thermally insulated into an upper refrigeration chamber 201 and a lower refrigeration chamber 301 by partitions or independent chamber walls. The upper drawer 2 is slidably installed within the upper refrigeration chamber 201, and the lower drawer 3 is slidably installed within the lower refrigeration chamber 301. Both are smoothly pushed and pulled by a slide rail assembly 103. The slide rail assembly 103 is fixed between the corresponding refrigeration chamber sidewall and the outside of the drawer, ensuring smooth drawer operation while maintaining chamber sealing and reducing cold air loss when the door is opened.

[0022] Furthermore, in conjunction with references Figure 6 and Figure 7 The upper drawer 2 and the lower drawer 3 are respectively provided with drawer air circulation vents 101 on the back panel, side wall or bottom, so that cold air in the cavity can enter and exit the drawer through the vents to form internal circulation, improve the temperature uniformity around the items, and quickly restore the set temperature after the door is closed.

[0023] Further, please refer to Figures 3 to 5 In terms of the refrigeration system, the compressor 4 and condenser 5 are centrally located in the rear bottom area of ​​the housing 1. Specifically, a heat dissipation vent 11 is provided at the front end of the bottom of the housing 1, and a support plate 12 is provided at the rear end of the bottom to support the compressor 4; the condenser 5 is horizontally arranged in the space between the heat dissipation vent 11 and the support plate 12, forming a compact bottom-mounted heat dissipation layout. This structure makes full use of the redundant space at the bottom of the housing, avoids occupying storage volume, and facilitates the inflow of external air from the heat dissipation vent 11, which is then discharged through the condenser 5 via natural convection or forced exhaust.

[0024] To enhance condensation and heat dissipation efficiency, a guide plate 13 is provided at the lower end of the condenser 5, extending in the same direction as the airflow path to guide the cooling airflow evenly through the condenser fins. A condenser cooling fan 51 is provided at the end of the condenser 5 furthest from the heat dissipation vent 11 (i.e., the rear end) to actively drive airflow and improve heat exchange efficiency. It should be noted that the guide plate 13 has an integrally formed flow-blocking rib 131, which protrudes longitudinally to prevent hot air backflow or water vapor diffusion to specific areas. The main controller 8 is installed on the outer side of the flow-blocking rib 131 (i.e., relative to the side of the condenser 5) of the housing 1. The flow-blocking rib 131 acts as a physical isolation to prevent the high-temperature and high-humidity airflow in the condenser area from directly impacting the main controller 8, thereby improving the reliability of the electrical control system.

[0025] The control panel 21 is located on the front top surface of the upper drawer 2, allowing users to easily view the real-time temperature, setpoints, and operating status of the upper and lower temperature zones when the drawer is open or closed, and to make independent adjustments. This location avoids placing the operating interface on the side wall or rear of the cabinet, improving the convenience of human-machine interaction and the overall simplicity of the appearance.

[0026] Furthermore, the upper refrigeration chamber 201 and the lower refrigeration chamber 301 are each equipped with an independent evaporator 6, forming two completely separate refrigeration circuits. Each evaporator 6 is equipped with an evaporation circulation fan 61 above it, which forces air from the chamber to flow across the surface of the evaporator 6, and then into the drawer through the drawer circulation vent 101, forming a highly efficient closed-loop airflow. In this case, the rear vent of the drawer circulation vent 101 becomes the supply air vent, while the sides and bottom become the return air vents.

[0027] Please refer to the reference. Figure 8 and Figure 9 To facilitate assembly and maintenance, an upper cavity mounting plate 202 is provided in the upper refrigeration chamber 201, and a lower cavity mounting plate 302 is provided in the lower refrigeration chamber 301. The evaporator 6 and the corresponding evaporation circulation fan 61 are fixedly mounted on their respective mounting plates. Specifically, one evaporation circulation fan 61 is configured in the upper refrigeration chamber 201, while two evaporation circulation fans 61 are configured in the lower refrigeration chamber 301 to accommodate the stronger airflow disturbance and faster cooling response required for the lower temperature setting in the lower chamber.

[0028] Considering that the compressor 4 is located at the rear center of the bottom of the housing 1, the lower refrigeration chamber 301 has a clearance part 104 in the area directly above the compressor 4 to avoid interference between the mounting plate and the compressor housing, ensuring structural compactness and assembly feasibility. It should be noted that the clearance part 104 is a bent notch, and the corresponding lower drawer 3 also has a corresponding bent notch.

[0029] Furthermore, both the upper refrigeration chamber 201 and the lower installation chamber 301 are equipped with condensate drainage channels 102 at the lower ends of the corresponding evaporators 6. When condensation or defrosting water is generated on the surface of the evaporator 6 due to refrigeration, the water drips down the fins into the drainage channels 102 and is guided to the rear end of the housing 1 for collection. A condensate collection box 7 is provided at the bottom of the rear end of the housing 1 to collect condensate from the upper and lower chambers, facilitating regular cleaning and preventing water accumulation, corrosion, or mold growth. The condensate collection box 7 is also located on the upper end of the support plate 12, on one side of the compressor 4.

[0030] Finally, it should be noted that in this embodiment, the specific arrangement of the capillary tube and filter regarding the refrigerant piping is not limited. In one embodiment, the capillary tube and filter can be integrated near the compressor 4 and connected to the upper and lower evaporators 6 respectively via a branch valve; in another embodiment, each evaporator 6 can be equipped with an independent capillary tube and filter, installed near the inlet of the corresponding chamber, to further enhance the independence and adjustment flexibility of the two circuits. Regardless of the form, it is a reasonable extension of the technical concept of this application.

[0031] In summary, the dual-temperature zone independent refrigeration drawer-type storage device of this application fundamentally eliminates thermal coupling between temperature zones through physically isolated dual chambers, dual evaporators, and an independent air duct system, achieving truly independent and stable dual-temperature control. The overall solution significantly improves temperature control accuracy, system response speed, and operational reliability.

[0032] As stated above, this case protects a dual-temperature zone independent cooling drawer-type storage device, and all technical solutions that are the same as or similar to this case should be considered to fall within the protection scope of this case.

Claims

1. A dual-temperature zone independently refrigerated drawer-type storage device, characterized in that, Includes a housing (1), which has an upper refrigeration chamber (201) and a lower refrigeration chamber (301) that are isolated from each other. The upper drawer (2) and the lower drawer (3) are respectively removably disposed in the upper refrigeration chamber (201) and the lower refrigeration chamber (301); The upper drawer (2) and the lower drawer (3) are respectively provided with drawer air circulation vents (101); A compressor (4) and a condenser (5) are provided at the bottom of the housing (1); Two sets of evaporators (6), one set of evaporators (6) is located in the upper refrigeration chamber (201), and the other set of evaporators (6) is located in the lower refrigeration chamber (301).

2. The dual-temperature zone independent cooling drawer-type storage device as described in claim 1, characterized in that, The bottom front end of the housing (1) is provided with a heat dissipation vent (11), and the bottom rear end is provided with a support plate (12) for supporting the compressor (4). The condenser (5) is located between the heat dissipation vent (11) and the support plate (12).

3. The dual-temperature zone independent cooling drawer-type storage device as described in claim 2, characterized in that, It also includes a guide plate (13) and a condenser cooling fan (51). The guide plate (13) is located at the lower end of the condenser (5), and the condenser cooling fan (51) is located at the end of the condenser (5) away from the heat dissipation vent (11).

4. A dual-temperature zone independent cooling drawer-type storage device as described in claim 3, characterized in that, The guide plate (13) is provided with a flow-cutting rib (131), and the box (1) is provided with a main controller (8) on the outside of the flow-cutting rib (131).

5. A dual-temperature zone independent cooling drawer-type storage device as described in claim 1, characterized in that, The upper refrigeration chamber (201) and the lower refrigeration chamber (301) are respectively provided with evaporation circulation fans (61), which are located at the upper end of the corresponding evaporator (6).

6. A dual-temperature zone independent cooling drawer-type storage device as described in claim 5, characterized in that, It also includes an upper cavity mounting plate (202) and a lower cavity mounting plate (302) respectively disposed in the upper refrigeration chamber (201) and the lower refrigeration chamber (301), and the evaporator (6) and the evaporation circulation fan (61) are both mounted on the corresponding upper cavity mounting plate (202) and lower cavity mounting plate (302).

7. A dual-temperature zone independent cooling drawer-type storage device as described in claim 5, characterized in that, The upper refrigeration chamber (201) is equipped with one evaporation circulation fan (61), and the lower refrigeration chamber (301) is equipped with two evaporation circulation fans (61).

8. A dual-temperature zone independent cooling drawer-type storage device as described in claim 1, characterized in that, The lower refrigeration chamber (301) is provided with a clearance part (104) at the position corresponding to the compressor (4).

9. A dual-temperature zone independent cooling drawer-type storage device as described in claim 1, characterized in that, The upper refrigeration chamber (201) and the lower refrigeration chamber (301) are provided with condensate guide grooves (102) at the lower end of the corresponding evaporator (6).

10. A dual-temperature zone independent cooling drawer-type storage device as described in claim 1, characterized in that, The rear end of the box (1) is also provided with a condensate collection box (7).

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