Locker

Abstract

The utility model discloses a locker, which comprises a locker body, a controller and a refrigerating system, the locker body is provided with a plurality of thermal insulation storage cells with opening and closing doors, the refrigerating system comprises a compression refrigerating unit and an evaporator unit, the evaporator unit comprises a plurality of second evaporators mounted in the storage cells, and the second evaporators are connected with the controller. The compression refrigeration unit is connected with the second evaporator through a pipeline, the evaporator unit further comprises a first evaporator, a heat preservation box is installed in the cabinet body, the first evaporator is installed in the heat preservation box, the first evaporator is connected with the compression refrigeration unit through a pipeline, and the heat preservation box is communicated with the storage cells through circulating pipelines. And a control air valve corresponding to each storage grid is arranged on the circulating pipeline. When articles are placed in the corresponding storage grids, cold air is conveyed into the storage grids through the heat preservation boxes and the circulating pipelines, and therefore the temperature in the storage grids is rapidly reduced.

Description

Technical Field

[0001] This utility model relates to the field of item storage lockers, and in particular to a type of storage locker. Background Technology

[0002] Currently, most lockers in public places or areas lack refrigeration and preservation functions, such as common parcel lockers. This makes it easy for fresh food to spoil or rot in these lockers, causing great inconvenience. Therefore, the inventor has proposed a new type of locker.

[0003] A search revealed Chinese patent document CN209960827U, published on January 17, 2020, which discloses a refrigerated express delivery locker. The locker includes a refrigeration system, a locker box, and a locker box roof; it is used for auxiliary lockers; the refrigeration system is located in a refrigeration system box on the top of the locker box, and includes a refrigeration control module and a refrigeration module; the refrigeration control module controls the refrigeration of each locker box, and the refrigeration module is used for refrigerating each locker box. Its features include: the refrigeration system refrigerates the interior of the locker box; a digital thermostat is installed inside the box to control the temperature; an air-cooled circulation system is installed inside the box; an airflow vent is also provided; and a condenser is used to generate heat to evaporate condensed water droplets, ensuring the interior of the box is dry. Its drawback is that: the refrigeration module refrigerates each storage compartment, resulting in energy waste when no items are stored in the compartments.

[0004] Furthermore, Chinese patent document CN113053037B, published on July 9, 2024, discloses an intelligent express cabinet with a refrigeration function. The refrigeration system includes a refrigeration system and a freezing system, ensuring that when couriers cannot deliver fresh produce or fruit immediately, placing them in the cabinet prevents spoilage. The invention allows the controller to select between the refrigeration and freezing systems for refrigerating fresh produce. A gravity sensor is installed inside the cabinet; the refrigeration and freezing systems only activate when items are stored inside, saving energy. An infrared sensor sends data to the controller when a user approaches, activating the display. The cabinet door is automatically controlled; the controller can control a drive mechanism to close the door. While this document discloses that the controller can control the opening and closing of a solenoid valve to close the pipes corresponding to the first and second branch pipes connected to storage boxes without items, thus effectively saving energy... However, its drawback is that it takes a while for the evaporator to cool the storage compartment to a certain temperature, and it cannot cool the storage compartment quickly. Utility Model Content

[0005] The purpose of this utility model is to provide a storage cabinet, which installs an insulated box inside the cabinet, and a first evaporator inside the insulated box. The insulated box is connected to the storage compartments through circulation pipes. A control valve is installed on the circulation pipes for each storage compartment. When items are placed in the corresponding storage compartment, cold air is delivered to the storage compartment through the insulated box and circulation pipes, thereby rapidly cooling the storage compartment.

[0006] To achieve the above objectives, this utility model provides a storage cabinet, including a cabinet body with multiple storage compartments equipped with openable and closable doors and heat preservation, and also including a controller and a refrigeration system. The refrigeration system includes a compression refrigeration unit and an evaporator unit. The compression refrigeration unit is electrically connected to the controller. The evaporator unit includes multiple second evaporators installed in the storage compartments. The compression refrigeration unit is connected to the second evaporators by pipes. The evaporator unit also includes a first evaporator. An insulation box is installed inside the cabinet. The first evaporator is installed inside the insulation box and is connected to the compression refrigeration unit by pipes. The insulation box is connected to the storage compartments by circulation pipes, and a control valve is installed on the circulation pipes corresponding to each storage compartment.

[0007] The circulation duct includes a return air duct and a supply air duct. The control air valve includes a first air valve and a second air valve. The return air duct and the supply air duct are respectively installed and connected to both sides of the insulation box. The first air valve and the second air valve are respectively installed on both sides of each storage compartment. The supply air duct is connected to each of the first air valves, and the return air duct is connected to each of the second air valves. A blower is installed on the return air duct at the end closest to the insulation box. The first air valve, the second air valve, and the blower are electrically connected to the controller.

[0008] The insulation box is also equipped with a third air valve and a fourth air valve on both sides. The air supply pipe is connected to the third air valve, and the air return pipe is connected to the fourth air valve. The third air valve and the fourth air valve are electrically connected to the controller.

[0009] The insulated box also contains a cold storage unit.

[0010] The cold storage unit includes an ice crystal box or an ice pack.

[0011] A first temperature sensor is installed inside the storage compartment, and the first temperature sensor is electrically connected to the controller.

[0012] A second temperature sensor is installed inside the insulated box, and the second temperature sensor is electrically connected to the controller.

[0013] The compression refrigeration unit includes a compressor, a condenser, a dryer filter, and a capillary tube connected in series via pipes. One end of the pipe located on the compressor is connected to a first tap, and one end of the pipe located on the capillary tube is connected to a second tap. The first evaporator and the second evaporator are respectively connected to the first tap via a first refrigerant pipe and to the second tap via a second refrigerant pipe. An electronic expansion valve is installed on the first refrigerant pipe, and a solenoid valve is installed on the second refrigerant pipe. The electronic expansion valve and the solenoid valve are electrically connected to the controller.

[0014] Compared with the prior art, this utility model has the following technical effects:

[0015] 1. This utility model involves installing an insulated box inside a cabinet, with a first evaporator installed inside the insulated box. The insulated box is connected to the storage compartments via circulation pipes, and a control valve is installed on each storage compartment via the circulation pipes. When items are placed in the corresponding storage compartment, cold air is supplied to the storage compartment through the insulated box and circulation pipes, thereby rapidly cooling the storage compartment.

[0016] 2. The insulated box of this utility model is also equipped with a cold storage unit to store cold within the insulated box. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

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

[0019] Figure 2 This is a schematic diagram of the refrigeration system of this utility model.

[0020] Figure 3 This is a schematic diagram of the control principle of this utility model.

[0021] Figure label:

[0022] Cabinet 10, storage compartment 11, first temperature sensor 111;

[0023] Controller 20;

[0024] Compression refrigeration unit 30, compressor 31, condenser 32, dryer filter 33, capillary tube 34, first tap 35, second tap 36, first refrigerant pipe 37, electronic expansion valve 371, second refrigerant pipe 38, solenoid valve 381;

[0025] Evaporator unit 40, first evaporator 41, second evaporator 42;

[0026] Insulation box 50, second temperature sensor 51;

[0027] Return air duct 60, air supply fan 61, fourth air valve 62, second air valve 63;

[0028] Air supply duct 70, third air valve 71, first air valve 72;

[0029] Cold storage unit 80; Detailed Implementation

[0030] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0031] Example 1:

[0032] See Figure 1-3 A storage locker includes a locker body 10 with multiple insulated storage compartments 11 equipped with doors, a controller 20, and a refrigeration system. The refrigeration system includes a compression refrigeration unit 30 and an evaporator unit 40. The compression refrigeration unit 30 is electrically connected to the controller 20. The evaporator unit 40 includes multiple second evaporators 42 installed in the storage compartments 11. The compression refrigeration unit 30 is connected to the second evaporators 42 by pipes. The evaporator unit 40 also includes a first evaporator 41. An insulated box 50 is installed inside the locker body 10. The first evaporator 41 is installed inside the insulated box 50 and is connected to the compression refrigeration unit 30 by pipes. The insulated box 50 is connected to the storage compartments 11 by circulation pipes, and a control valve is installed on each storage compartment 11 on the circulation pipes.

[0033] By installing an insulation box 50 inside the cabinet 10, and installing a first evaporator 41 inside the insulation box 50, the insulation box 50 is connected to the storage compartments 11 through circulation pipes. Each storage compartment is equipped with a control air valve on the circulation pipe. When items are placed in the corresponding storage compartment 11, cold air is delivered to the storage compartment 11 through the insulation box 50 and the circulation pipes, thereby rapidly cooling the storage compartment.

[0034] For details, see Figure 1The circulation duct includes a return air duct 60 and a supply air duct 70. The control valves include a first air valve 72 and a second air valve 63. The return air duct 60 and the supply air duct 70 are respectively installed and connected to both sides of the insulation box 50. The first air valve 72 and the second air valve 63 are respectively installed on both sides of each storage compartment 11. The supply air duct 70 is connected to each first air valve 72, and the return air duct 60 is connected to each second air valve 63. A blower 61 is installed on the return air duct 60 at the end closest to the insulation box 50. The first air valve 72, the second air valve 63 and the blower 61 are electrically connected to the controller 20. With the above structure and the control method in CN113053037B, when the solenoid valve on the first diversion pipe in CN113053037B is opened, the first air valve 72 and the second air valve 63 on both sides of the corresponding storage compartment 11, as well as the blower 61, are simultaneously opened. This sends cold air from the insulation box 50 into the corresponding storage compartment 11, rapidly cooling the compartment. After a period of time, the first air valve 72, the second air valve 63, and the blower 61 are closed.

[0035] Of course, the first air valve 72, the second air valve 63 and the blower 61 can also be opened before the solenoid valve is opened on the first diversion pipe.

[0036] In this embodiment, the first air valve 72 and the second air valve 63 are existing technologies, such as the air valves disclosed in CN210717971U.

[0037] Furthermore, in order to make the insulation box 50 more sealed, a third air valve 71 and a fourth air valve 62 are installed on both sides of the insulation box 50. The air supply pipe 70 is connected to the third air valve 71, and the return air pipe 60 is connected to the fourth air valve 62. The third air valve 71 and the fourth air valve 62 are electrically connected to the controller 20 respectively.

[0038] Similarly, the third air valve 71 and the fourth air valve 62 are existing technologies. When the first air valve 72 and the second air valve 63 are opened, the third air valve 71 and the fourth air valve 62 also open simultaneously.

[0039] Example 2:

[0040] Based on the embodiment, in order to store cold in the insulation box 50, a cold storage unit 80 is also placed inside the insulation box 50.

[0041] Specifically, the cold storage unit 80 includes an ice crystal box or ice pack.

[0042] Example 3:

[0043] Based on Embodiment 1 or Embodiment 2, a first temperature sensor 111 is installed in the storage compartment 11. The first temperature sensor 111 is electrically connected to the controller 20, and the temperature inside the storage compartment 11 is detected by the first temperature sensor 111.

[0044] Furthermore, a second temperature sensor 51 is installed inside the insulated box 50. The second temperature sensor 51 is electrically connected to the controller 20, and the temperature inside the insulated box 50 is detected by the second temperature sensor 51.

[0045] The first temperature sensor 111 and the second temperature sensor 51 are PT100 temperature sensors.

[0046] Example 4:

[0047] Based on Example 1, Example 2, or Example 3, see [link to example]. Figure 2 The compression refrigeration unit 30 includes a compressor 31, a condenser 32, a dryer filter 33, and a capillary tube 34 connected in series via pipes. One end of the pipe located at the compressor 31 is connected to the first tap 35, and one end of the pipe located at the capillary tube 34 is connected to the second tap 36. The first evaporator 41 and the second evaporator 42 are respectively connected to the first tap 35 via the first refrigerant pipe 37 and to the second tap 36 via the second refrigerant pipe 38. An electronic expansion valve 371 is installed on the first refrigerant pipe 37, and a solenoid valve 381 is installed on the second refrigerant pipe 38. The electronic expansion valve 371 and the solenoid valve 381 are electrically connected to the controller 20.

[0048] By controlling the corresponding electronic expansion valve 371 and solenoid valve 381, the corresponding first evaporator 41 and second evaporator 42 are opened and closed.

[0049] In this embodiment, the electronic expansion valve 371 and solenoid valve 381 corresponding to the first evaporator 41 are open. Since the insulation box 50 has a closed space, when no storage compartment 11 is opened, the electronic expansion valve 371 corresponding to the first evaporator 41 can be adjusted according to temperature control to keep the compression refrigeration unit 30 in an energy-saving state. The electronic expansion valve 371 and solenoid valve 381 corresponding to the second evaporator 42 are opened as needed.

[0050] The working principle of this utility model:

[0051] See Figure 2 During refrigeration, the refrigerant is compressed in the compressor 31, turning the originally low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure hot vapor, which is then discharged from the exhaust port of the compressor 31.

[0052] High-temperature, high-pressure gaseous refrigerant is discharged from the discharge port of compressor 31 and sent into condenser 32. An axial fan cools condenser 32, and the refrigerant in the condenser 32 pipes is then cooled and sent out as low-temperature, high-pressure liquid refrigerant.

[0053] The low-temperature, high-pressure liquid refrigerant is discharged from the condenser 32, then passes through the dryer filter 33 to remove excess moisture, and then undergoes throttling and pressure reduction through the capillary tube 34, becoming a low-temperature, low-pressure liquid refrigerant. This liquid is then distributed into the respective evaporator lines via the first tap 35. Once in each evaporator line, the low-temperature, low-pressure liquid refrigerant absorbs heat and vaporizes, cooling the outer surface of the evaporator and the surrounding air.

[0054] After the low-temperature, low-pressure liquid refrigerant in the evaporator undergoes heat exchange, it becomes a low-temperature, low-pressure gaseous refrigerant. It then flows through the refrigeration pipeline to the second tap 36, enters the compressor 31, and is compressed again. This process repeats continuously to complete the refrigeration cycle.

[0055] When one of the storage compartments 11 is opened, the first air valve 72, the second air valve 63, the third air valve 71, the fourth air valve 62, and the blower 61 of the corresponding storage compartment 11 are simultaneously opened, sending cold air from the insulation box 50 into the corresponding storage compartment 11 to rapidly cool it down. After a period of time, when the second evaporator 42 is able to provide a lower temperature, the first air valve 72, the second air valve 63, the third air valve 71, the fourth air valve 62, and the blower 61 are closed. If another storage compartment 11 is opened while the blower 61 is open, then only the first air valve 72 and the second air valve 63 corresponding to the previous storage compartment 11 are closed; the third air valve 71, the fourth air valve 62, and the blower 61 remain open, while the first air valve 72 and the second air valve 63 corresponding to the next storage compartment 11 are opened.

Claims

1. A locker comprising a locker body (10) having a plurality of storage compartments (11) with opening and closing doors and thermal insulation, a controller (20) and a refrigeration system, the refrigeration system comprising a compression refrigeration unit (30) and an evaporator unit (40), the compression refrigeration unit (30) being electrically connected to the controller (20), the evaporator unit (40) comprising a plurality of second evaporators (42) installed in the storage compartments (11), the compression refrigeration unit (30) being connected to the second evaporators (42) by pipes, characterized in that: The evaporator unit (40) further comprises a first evaporator (41), a heat preservation box (50) is installed in the cabinet (10), the first evaporator (41) is installed in the heat preservation box (50), the first evaporator (41) is connected with the compression refrigeration unit (30) through a pipeline, and the heat preservation box (50) is communicated with the storage compartments (11) through circulating pipelines.

2. A kiosk according to claim 1, wherein: The circulating pipeline comprises a return air pipe (60) and a supply air pipe (70), the control air valve comprises a first air valve (72) and a second air valve (63), the return air pipe (60) and the supply air pipe (70) are respectively installed and connected on the two sides of the heat preservation box (50), the first air valve (72) and the second air valve (63) are respectively installed on the two sides of each storage compartment (11), the supply air pipe (70) is communicated with each first air valve (72), the return air pipe (60) is communicated with each second air valve (63), and a blower (61) is installed on one end of the return air pipe (60) close to the heat preservation box (50).

3. A kiosk according to claim 2, wherein: The first air valve (72), the second air valve (63) and the blower (61) are electrically connected with the controller (20) respectively.

4. A kiosk according to claim 1, wherein: The heat preservation box (50) further comprises a third air valve (71) and a fourth air valve (62) installed on the two sides thereof, the supply air pipe (70) is communicated with the third air valve (71), the return air pipe (60) is communicated with the fourth air valve (62), and the third air valve (71) and the fourth air valve (62) are electrically connected with the controller (20) respectively.

5. A kiosk according to claim 4, wherein: The heat preservation box (50) further comprises a cold storage unit (80).

6. A kiosk according to claim 1, wherein: The cold storage unit (80) comprises an ice crystal box or an ice bag.

7. A kiosk according to claim 1, wherein: The storage compartment (11) is provided with a first temperature sensor (111), and the first temperature sensor (111) is electrically connected with the controller (20).

8. A kiosk according to any one of claims 1 to 7, wherein: The heat preservation box (50) is provided with a second temperature sensor (51), and the second temperature sensor (51) is electrically connected with the controller (20). The compression refrigeration unit (30) comprises a compressor (31), a condenser (32), a drying filter (33) and a capillary tube (34) connected in series through pipelines, one end of the pipeline located at the compressor (31) is communicated with a first tap (35), one end of the pipeline located at the capillary tube (34) is communicated with a second tap (36), the first evaporator (41) and the second evaporator (42) are respectively communicated with the first tap (35) through a first refrigerant pipeline (37) and communicated with the second tap (36) through a second refrigerant pipeline (38), an electronic expansion valve (371) is installed on the first refrigerant pipeline (37), an electromagnetic valve (381) is installed on the second refrigerant pipeline (38), and the electronic expansion valve (371) and the electromagnetic valve (381) are electrically connected with the controller (20) respectively.

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