Low-noise dual-system ultralow-temperature preservation box

Abstract

The utility model provides a low-noise dual-system ultralow-temperature preservation box, and belongs to the technical field of low-temperature preservation boxes. The low-noise dual-system ultralow-temperature preservation box comprises a box body, a cabin, a refrigerating system and an electric control box, a door body is arranged on the front side face of the box body, and the cabin is arranged at the bottom of the box body; an electric cabinet and two groups of refrigerating systems are arranged in the cabin, each group of refrigerating system comprises a compressor, a compressor frequency converter and a variable-frequency condensing fan, the electric cabinet is connected with the compressor frequency converter and the variable-frequency condensing fan, and the compressor is connected with the compressor frequency converter; the cabin is composed of a cabin cover, a cabin protection plate and a bottom plate, and four universal wheels are arranged at the bottom of the bottom plate. The low-noise dual-system ultralow-temperature preservation box is provided with the two completely independent refrigerating systems, and the problem that an existing ultralow-temperature preservation box with the dual refrigerating systems is too large in noise can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-temperature preservation boxes, and in particular relates to a low-noise dual-system ultra-low-temperature preservation box. Background Art

[0002] As people pay more and more attention to the medical industry, ultra-low temperature preservation boxes are becoming more and more well-known, especially in the storage of biological samples, low-temperature testing of electronic devices and special materials. The application of multiple scenarios and multiple frequencies has greatly increased the demand for ultra-low temperature preservation boxes, and also put forward higher requirements on the performance of ultra-low temperature preservation boxes. At present, there are many kinds of ultra-low temperature preservation boxes on the market, but with the development of the industry and technology, people have put forward higher requirements on the safety of ultra-low temperature preservation boxes. Ultra-low temperature preservation boxes with dual refrigeration systems have emerged and gradually increased; however, no matter what technology is used for ultra-low temperature preservation boxes, due to the ultra-low temperature environment of -80℃, the required compressor cooling capacity and heat dissipation are also large, resulting in the overall noise of common ultra-low temperature preservation boxes on the market. It is also significantly loud, which greatly affects the user experience and excessive noise will also affect the health of people around. Utility Model Content

[0003] In order to solve the deficiencies in the prior art, the utility model provides a low-noise dual-system ultra-low temperature preservation box, which solves the problem of excessive noise in the existing ultra-low temperature preservation boxes with dual refrigeration systems and provides users with a better use experience.

[0004] The utility model adopts the following technical solutions.

[0005] A low-noise dual-system ultra-low temperature storage box, comprising a box body, a cabin, a refrigeration system and an electric control box.

[0006] The front side of the box body is provided with a door body, and the bottom of the box body is provided with a cabin;

[0007] The cabin is equipped with an electrical control box and two refrigeration systems. Each refrigeration system includes a compressor, a compressor inverter and a variable frequency condensing fan. The electrical control box is connected to the compressor inverter and the variable frequency condensing fan, and the compressor is connected to the compressor inverter. The cabin consists of a cabin cover, a cabin guard plate and a bottom plate. Four universal wheels are provided at the bottom of the bottom plate.

[0008] Furthermore, the cabin guard plate includes a first cabin guard plate and a second cabin guard plate, the first cabin guard plate is arranged on a first side of the cabin, and the second cabin guard plate is arranged on a second side of the cabin.

[0009] Furthermore, the nacelle cover includes a first nacelle cover and a second nacelle cover, the first nacelle cover is arranged on a third side of the nacelle, and the second nacelle cover is arranged on a fourth side of the nacelle.

[0010] Furthermore, a magnetic dust cover is provided on the first cabin cover, and a plurality of ventilation holes are provided at the top and bottom ends of the first cabin cover; and a plurality of ventilation holes are provided on the second cabin cover.

[0011] Furthermore, the variable frequency condensing fan is located on the inner side of the first nacelle cover.

[0012] Furthermore, the low-noise dual-system ultra-low temperature preservation box also includes corrugated sound-absorbing cotton, and the corrugated sound-absorbing cotton is connected to the inner side of the first cabin guard plate, the second cabin guard plate and the first cabin cover.

[0013] Further, the variable frequency condensing fan comprises a condensing fan motor, a fan blade and a rolling bearing;

[0014] The electric control box is connected to the condensing fan motor, and the condensing fan motor is connected to the fan blades through a rolling bearing.

[0015] Furthermore, the electric control box includes a main control board, and the low-noise dual-system ultra-low temperature preservation box also includes a temperature sensor, which is arranged in the box body and connected to the main control board.

[0016] Furthermore, the low-noise dual-system ultra-low temperature preservation box also includes a human-machine interactive display screen, which is arranged on the door body and connected to the main control board.

[0017] Furthermore, the electric control box also includes a power supply, one end of the electric control box is attached to the second engine compartment cover, and the second engine compartment cover is provided with an outlet for a power line.

[0018] The beneficial effect of the utility model is that, compared with the prior art, the utility model provides a low-noise dual-system ultra-low temperature preservation box, which has two completely independent refrigeration systems, each of which can maintain a low-temperature environment of -80°C, making it safer and more reliable to use; the ultra-low temperature preservation box provided by the utility model has two modes, normal mode and low-noise mode, and the user can select the working mode through the human-computer interactive display screen according to the needs, and the setting of the wavy sound-absorbing cotton can further enhance the noise reduction effect of the preservation box. At the same time, a temperature sensor is provided, which monitors the temperature in the ultra-low temperature preservation box in real time, and the main control board keeps the temperature in the preservation box within the set temperature range by controlling the speed of the compressor and the variable frequency condensing fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a low-noise dual-system ultra-low temperature storage box provided by the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the cabin in a low-noise dual-system ultra-low temperature storage box provided by the utility model. Figure 1 ;

[0021] Figure 3 This is a schematic diagram of the internal structure of the cabin in a low-noise dual-system ultra-low temperature storage box provided by the utility model. Figure 2 ;

[0022] Figure 4 This is a schematic diagram of the internal structure of the cabin in a low-noise dual-system ultra-low temperature storage box provided by the utility model. Figure 3 ;

[0023] Figure 5 This is a schematic diagram of the cabin structure of a low-noise dual-system ultra-low temperature storage box provided by the utility model. Figure 1 ;

[0024] Figure 6 This is a schematic diagram of the cabin in a low-noise dual-system ultra-low temperature storage box structure provided by the utility model. Figure 2 .

[0025] In the figure:

[0026] 1-electric control box; 2-compressor; 3-compressor inverter; 4-variable frequency condensing fan; 5-first cabin guard plate; 6-second cabin guard plate; 7-first cabin cover; 8-second cabin cover; 9-magnetic dust cover; 10-box; 11-cabin; 12-door body. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The embodiments described in this application are only embodiments of a part of the utility model, not all embodiments. Based on the spirit of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the utility model.

[0028] like Figure 1-6 A low-noise dual-system ultra-low temperature preservation box includes a box body 10, a cabin 11, a refrigeration system and an electric control box. The front side of the box body 10 is provided with a door body 12, and the bottom of the box body 10 is provided with a cabin 11; the cabin 11 is provided with an electric control box 1 and two refrigeration systems, each refrigeration system includes a compressor 2, a compressor inverter 3 and a variable frequency condensing fan 4, the electric control box 1 is connected to the compressor inverter 3 and the variable frequency condensing fan 4, the compressor 2 is connected to the compressor inverter 3, the cabin 11 is composed of a cabin cover, a cabin guard plate and a bottom plate, and the bottom of the bottom plate is provided with four universal wheels.

[0029] The nacelle guard plate includes a first nacelle guard plate 5 and a second nacelle guard plate 6 . The first nacelle guard plate 5 is arranged on a first side of the nacelle 11 , and the second nacelle guard plate 6 is arranged on a second side of the nacelle 11 .

[0030] The nacelle cover includes a first nacelle cover 7 and a second nacelle cover 8 . The first nacelle cover 7 is arranged on a third side of the nacelle 11 , and the second nacelle cover 8 is arranged on a fourth side of the nacelle 11 .

[0031] A magnetic dust cover 9 is provided on the first nacelle cover 7 , and a plurality of ventilation holes are provided at the top and bottom ends of the first nacelle cover 7 ; a plurality of ventilation holes are provided on the second nacelle cover 8 .

[0032] The variable frequency condensing fan 4 is located on the inner side of the first nacelle cover 7 .

[0033] The low-noise dual-system ultra-low temperature preservation box also includes corrugated sound-absorbing cotton, and the inner sides of the first cabin guard plate 5, the second cabin guard plate 6 and the first cabin cover 7 are connected to the corrugated sound-absorbing cotton.

[0034] The variable frequency condensing fan 4 comprises a condensing fan motor, fan blades and rolling bearings;

[0035] The electric control box 1 is connected to the condensing fan motor, and the condensing fan motor is connected to the fan blades through a rolling bearing.

[0036] The electric control box 1 includes a main control board. The low-noise dual-system ultra-low temperature preservation box also includes a temperature sensor. The temperature sensor is arranged in the box body 10 and is connected to the main control board.

[0037] The low-noise dual-system ultra-low temperature preservation box also includes a human-machine interactive display screen, which is arranged on the door body 12 and connected to the main control board.

[0038] The electric control box 1 also includes a power supply. One end of the electric control box 1 is attached to the second nacelle cover 8, and the second nacelle cover 8 is provided with an outlet for a power line.

[0039] The signal for switching to low noise mode or normal mode is transmitted to the main control board through the human-computer interactive display screen, and the main control board adjusts the speed of the compressor and variable frequency condensing fan according to the signal. The low noise dual system ultra-low temperature preservation box has a normal mode and a low noise mode. In the normal mode, the speed of the compressor is 2000-4500rpm, and the speed of the variable frequency condensing fan is 500-1500rpm; when switching to the low noise mode, the maximum speed of the compressor and the variable frequency condensing fan becomes smaller. In a preferred but non-limiting embodiment, the speed of the compressor in the low noise mode is 2000-2500rpm, and the speed of the variable frequency condensing fan is 500-1000rpm;

[0040] The operator transmits a low-noise mode switching signal to the main control board through the human-machine interactive display screen. The main control board receives the signal and controls the speed of the condensing fan motor according to the signal, and controls the speed of the compressor 2 through the compressor inverter 3, thereby realizing low-noise operation of the ultra-low temperature preservation box; the operator transmits a normal mode switching signal to the main control board through the human-machine interactive display screen. The main control board receives the signal and controls the speed of the condensing fan motor according to the signal, and controls the speed of the compressor 2 through the compressor inverter 3, thereby realizing normal operation of the ultra-low temperature preservation box.

[0041] The low noise dual system ultra-low temperature preservation box also includes a temperature sensor, which is arranged in the box body 10 and connected to the main control board. The temperature sensor is used to collect the temperature in the preservation box in real time and transmit the temperature information to the main control board.

[0042] The beneficial effect of the utility model is that, compared with the prior art, the utility model provides a low-noise dual-system ultra-low temperature preservation box, which has two completely independent refrigeration systems, each of which can maintain a low-temperature environment of -80°C, making it safer and more reliable to use; the ultra-low temperature preservation box provided by the utility model has two modes, normal mode and low-noise mode, and the user can select the working mode through the human-computer interactive display screen according to the needs, and the setting of the wavy sound-absorbing cotton can further enhance the noise reduction effect of the preservation box. At the same time, a temperature sensor is provided, which monitors the temperature in the ultra-low temperature preservation box in real time, and the main control board keeps the temperature in the preservation box within the set temperature range by controlling the speed of the compressor and the variable frequency condensing fan.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A low-noise dual-system ultra-low temperature storage box, comprising a box body (10), a cabin (11), a refrigeration system and an electric control box (1), characterized in that: The front side of the box body (10) is provided with a door body (12), and the bottom of the box body (10) is provided with a cabin (11); An electric control box (1) and two refrigeration systems are arranged in the cabin (11), each refrigeration system comprising a compressor (2), a compressor inverter (3) and a variable frequency condensing fan (4), the electric control box (1) is connected to the compressor inverter (3) and the variable frequency condensing fan (4), and the compressor (2) is connected to the compressor inverter (3); the cabin (11) is composed of a cabin cover, a cabin guard plate and a bottom plate, and four universal wheels are arranged at the bottom of the bottom plate.

2. A low noise dual system ultra-low temperature storage box according to claim 1, characterized in that: The cabin guard plate comprises a first cabin guard plate (5) and a second cabin guard plate (6), wherein the first cabin guard plate (5) is arranged on a first side of the cabin (11), and the second cabin guard plate (6) is arranged on a second side of the cabin (11).

3. A low noise dual system ultra-low temperature storage box according to claim 2, characterized in that: The nacelle cover comprises a first nacelle cover (7) and a second nacelle cover (8), wherein the first nacelle cover (7) is arranged on a third side of the nacelle (11), and the second nacelle cover (8) is arranged on a fourth side of the nacelle (11).

4. A low noise dual system ultra-low temperature storage box according to claim 3, characterized in that: A magnetic dust cover (9) is provided on the first nacelle cover (7), and a plurality of ventilation holes are provided at the top and bottom ends of the first nacelle cover (7); and a plurality of ventilation holes are provided on the second nacelle cover (8).

5. A low noise dual system ultra-low temperature storage box according to claim 4, characterized in that: The variable frequency condensing fan (4) is located on the inner side of the first nacelle cover (7).

6. A low noise dual system ultra-low temperature storage box according to claim 5, characterized in that: The low-noise dual-system ultra-low temperature storage box also includes corrugated sound-absorbing cotton, and the corrugated sound-absorbing cotton is connected to the inner side of the first cabin guard plate (5), the second cabin guard plate (6) and the first cabin cover (7).

7. The low noise dual system ultra-low temperature storage box according to claim 1, characterized in that: The variable frequency condensing fan (4) comprises a condensing fan motor, fan blades and rolling bearings; The electric control box (1) is connected to the condensing fan motor, and the condensing fan motor is connected to the fan blades via a rolling bearing.

8. The low noise dual system ultra-low temperature storage box according to claim 7, characterized in that: The electric control box (1) comprises a main control board, and the low-noise dual-system ultra-low temperature preservation box also comprises a temperature sensor, which is arranged in the box body (10) and connected to the main control board.

9. A low noise dual system ultra-low temperature storage box according to claim 8, characterized in that: The low-noise dual-system ultra-low temperature preservation box also includes a human-machine interactive display screen, which is arranged on the door body (12) and connected to the main control panel.

10. A low noise dual system ultra-low temperature storage box according to claim 9, characterized in that: The electric control box (1) also includes a power supply. One end of the electric control box (1) is attached to the second nacelle cover (8), and the second nacelle cover (8) is provided with a power line outlet.

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