Vehicle-mounted refrigerator structure capable of improving temperature uniformity

Abstract

The utility model belongs to the technical field of vehicle-mounted refrigerators, and particularly relates to a vehicle-mounted refrigerator structure capable of improving temperature uniformity. An air duct assembly is arranged on the inner side of the vehicle-mounted refrigerator inner container body. An evaporator is arranged in a groove in the rear end of the lower surface of the air duct assembly. The front end of the upper surface of the air duct assembly is vertically connected with an auxiliary air duct, and the rear end of the inner side of the vehicle-mounted refrigerator inner container body is vertically connected with an air return baffle. The air duct assembly and the auxiliary air duct blow air into the inner container body of the vehicle-mounted refrigerator, and air flows back downwards to pass through the evaporator after being guided by the air return baffle and then flows back to an air inlet in the bottom of the air duct assembly to form an air cooling circulation structure. The flowing uniformity of cold air is ensured through the size difference of the air return ports at the bottom; through the auxiliary air duct with the air door, refrigeration in places such as a blind area is guaranteed; opening of the air door is controlled through feedback of the temperature sensor, and temperature uniformity in the space is guaranteed as much as possible.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle-mounted refrigerators, and in particular relates to a vehicle-mounted refrigerator structure capable of improving temperature uniformity. Background Art

[0002] At present, most of the front-mounted vehicle refrigerators are direct cooling refrigerators, which have two problems: one is that the surface is easy to frost, and the other is that the temperature uniformity is not good. In view of the above problems, a vehicle refrigerator structure is proposed to improve the temperature uniformity. Utility Model Content

[0003] In order to solve the defects and shortcomings of the prior art, the purpose of the utility model is to provide a vehicle-mounted refrigerator structure with simple structure, reasonable design, easy use and improved temperature uniformity. It redesigns the refrigeration system so that the air outlet and return air outlet of the air path form a closed loop circulation, thereby achieving temperature uniformity in the box.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: it includes a vehicle refrigerator inner tank body, a temperature sensor, an air duct assembly, an auxiliary air duct, an evaporator, and a return air baffle; a plurality of temperature sensors are fixed on the left and right and upper side walls of the vehicle refrigerator inner tank body respectively; and an air duct assembly is arranged on the inner side of the vehicle refrigerator inner tank body, and an evaporator is arranged in the groove at the rear end of the lower surface of the air duct assembly, and is supported by aluminum foil foam; an auxiliary air duct is vertically connected to the front end of the upper surface of the air duct assembly, and a return air baffle is vertically connected to the inner rear end of the vehicle refrigerator inner tank body; the air duct assembly and the auxiliary air duct blow air to the inside of the vehicle refrigerator inner tank body, and the gas is guided by the return air baffle and then flows downward and returns to the air inlet at the bottom of the air duct assembly after passing through the evaporator to form an air cooling circulation structure.

[0005] Preferably, the air duct assembly consists of a circulation cavity and a support plate, the upper surface of the circulation cavity is provided with a main air outlet and an auxiliary air outlet at the front and rear ends; a circulation fan is provided at the bottom of the circulation cavity; and a return air outlet is provided at the tail of the air duct assembly.

[0006] Preferably, the auxiliary air duct is an inverted hollow U-shaped square tube structure, and one end of the auxiliary air duct is connected to the circulation cavity for air intake, and a control damper is provided at the connection.

[0007] Preferably, three groups of blowing slots are arranged on the inner side of the auxiliary air duct, and the blowing slots include a first-level blowing slot, a second-level blowing slot, and a third-level blowing slot. The first-level blowing slot is arranged on the vertical beam at the air inlet end of the auxiliary air duct, the second-level blowing slot is arranged in the middle of the middle cross beam of the auxiliary air duct, and the third-level blowing slot is arranged in the middle of the end vertical beam.

[0008] Preferably, the size of the secondary blowing slot corresponds to that of the main air outlet, and the slot widths of the primary blowing slot, the secondary blowing slot, and the tertiary blowing slot are proportionally reduced.

[0009] Preferably, the return air baffle is supported by supporting feet on the back to form a return air cavity between the return air baffle and the inner tank body of the vehicle refrigerator.

[0010] Preferably, the surface of the return air baffle is provided with a plurality of return air holes distributed in a matrix, and the apertures of the return air holes increase layer by layer from bottom to top.

[0011] Preferably, a plurality of hemispherical protrusions for preventing blockage are staggeredly arranged on the outer side of the return air hole.

[0012] Preferably, a pair of heating tubes are provided at the tail of the evaporator, and a water receiving tray is sleeved at the rear end of the heating tubes. The middle of the heating tubes is connected to the drain pipe in the middle of the water receiving tray 8 through a heat-conducting aluminum sheet.

[0013] After adopting the above structure, the beneficial effects of the utility model are as follows: it redesigns the refrigeration system to ensure the uniformity of cold air flow by the size difference of the bottom return air outlet; it ensures the cooling of blind spots and other places through the auxiliary air duct with air door; it controls the opening of the air door through the feedback of the temperature sensor to ensure the temperature uniformity in the space as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model is described in detail through the following specific implementations and drawings.

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the air outlet distribution of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the air duct assembly 3 of the utility model;

[0018] Figure 4 It is a cross-sectional schematic diagram of the air duct assembly 3 of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the auxiliary air duct 4 of the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the return air baffle 6 of the utility model;

[0021] Figure 7 This is a schematic diagram of the air circulation of the utility model;

[0022] Explanation of the accompanying drawings: vehicle refrigerator inner tank body 1, temperature sensor 2, air duct assembly 3, auxiliary air duct 4, evaporator 5, return air baffle 6, circulation fan 30, main air outlet 31, auxiliary air outlet 32, return air outlet 33, circulation cavity 34, support plate 35, blowing groove 41, first-level blowing groove 411, second-level blowing groove 412, third-level blowing groove 413, return air hole 61, hemispherical protrusion 62, support foot 63. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described below by specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0024] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0025] See Figure 1-7 As shown, this specific embodiment adopts the following technical scheme: it includes a vehicle refrigerator inner tank body 1, a temperature sensor 2, an air duct assembly 3, an auxiliary air duct 4, an evaporator 5, and a return air baffle 6; several temperature sensors 2 are fixed on the left and right and upper side walls of the vehicle refrigerator inner tank body 1; and an air duct assembly 3 is arranged on the inner side of the vehicle refrigerator inner tank body 1, and an evaporator 5 is arranged in the groove at the rear end of the lower surface of the air duct assembly 3; the front end of the upper surface of the air duct assembly 3 is vertically connected with the auxiliary air duct 4, and the inner rear end of the vehicle refrigerator inner tank body 1 is vertically connected with the return air baffle 6; the air duct assembly 3 and the auxiliary air duct 4 blow air to the inside of the vehicle refrigerator inner tank body 1, and the gas is guided by the return air baffle 6 and then flows downward and passes through the evaporator 5, and then flows back to the air inlet at the bottom of the air duct assembly 3 to form an air-cooled circulation structure.

[0026] Among them, the air duct component 3 is composed of a circulation cavity 34 and a support plate 35. The front and rear ends of the upper surface of the circulation cavity 34 are provided with a main air outlet 31 and an auxiliary air outlet 32; and a circulation fan 30 is provided at the bottom of the circulation cavity 34; a return air outlet 33 is provided at the tail of the air duct component 3; the bottom return air outlet design is adopted to make the air volume distribution more uniform, and the size of the return air outlet 33 is designed according to that the farther away from the air duct component, the larger the opening is, so as to avoid the cold air from returning quickly from the front end.

[0027] Further, the auxiliary air duct 4 is an inverted hollow U-shaped square tube structure, and one end of the auxiliary air duct 4 is connected to the circulation cavity 34 for air intake. Three groups of blowing slots 41 are arranged inside the auxiliary air duct 4, and the blowing slots 41 include a primary blowing slot 411, a secondary blowing slot 412, and a tertiary blowing slot 413. The primary blowing slot 411 is arranged on the vertical beam at the air inlet end of the auxiliary air duct 4, the secondary blowing slot 412 is arranged in the middle of the middle crossbeam of the auxiliary air duct 4, and the tertiary blowing slot 413 is arranged in the middle of the terminal vertical beam; the size specification of the secondary blowing slot 412 is kept corresponding to the main air outlet 31, and the slot widths of the primary blowing slot 411, the secondary blowing slot 412, and the tertiary blowing slot 413 are proportionally reduced.

[0028] In addition, the return air baffle 6 is supported by the support feet 63 on the back to form a return air cavity with the vehicle refrigerator inner tank body 1; the surface of the return air baffle 6 is provided with a plurality of return air holes 61 distributed in a matrix, and the aperture of the return air holes 61 increases layer by layer from bottom to top; the outer side of the return air holes 61 is provided with a plurality of hemispherical protrusions 62 for preventing blocking; the hemispherical protrusions 62 are higher than the return air port surface to ensure that the refrigeration air outlet and return air cycle can still be completed normally when placing items. A pair of heating tubes 7 are provided at the tail of the evaporator 5, and a water receiving tray 8 is sleeved at the rear end of the heating tubes 7, and the middle of the heating tubes 7 is connected to the drainage pipe 81 in the middle of the water receiving tray 8 through a heat-conducting aluminum sheet 71.

[0029] The working principle of this specific embodiment is as follows: A. During the normal refrigeration process, the refrigerator discharges air through the main air outlet 31, the auxiliary air outlet 32 ​​and the auxiliary air duct 4, and returns air through the return air outlet 33, completing the air circulation;

[0030] B. In the early stage of the refrigerator starting to refrigerate, the damper between the auxiliary air duct 4 and the circulation cavity 34 is closed, and the refrigerator discharges air through the main air outlet 31 and the auxiliary air outlet 32. At the same time, the three groups of temperature sensors 2 start to read the temperature. When the temperature difference between any two sensors in the three groups of temperature sensors 2 is greater than 2°C, the damper of the auxiliary air duct 4 is opened, and part of the air is discharged through the auxiliary air duct 4 through the first-level blowing slot 411, the second-level blowing slot 412, and the third-level blowing slot 413 to ensure the temperature uniformity of the entire inner tank;

[0031] C. The return air needs to first pass through the return air damper 6, then enter the evaporator 5 through the return air port 33, and finally be driven by the circulation fan 30 for circulation.

[0032] After adopting the above structure, the beneficial effects of the utility model are as follows: it ensures the uniformity of cold air flow by redesigning the refrigeration system and the size difference of the bottom return air outlet; ensures the cooling of blind spots and other places through the auxiliary air duct with air door; controls the opening of the air door through the feedback of the temperature sensor to ensure the temperature uniformity in the space as much as possible.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A vehicle refrigerator structure for improving temperature uniformity, characterized in that: It comprises a vehicle refrigerator inner tank body, a temperature sensor, an air duct assembly, an auxiliary air duct, an evaporator, and a return air baffle; a plurality of temperature sensors are respectively fixed on the left and right side walls and the upper end side walls of the vehicle refrigerator inner tank body; an air duct assembly is arranged on the inner side of the vehicle refrigerator inner tank body, an evaporator is arranged in the groove at the rear end of the lower surface of the air duct assembly, and is supported by aluminum foil foam; an auxiliary air duct is vertically connected to the front end of the upper surface of the air duct assembly, and a return air baffle is vertically connected to the inner rear end of the vehicle refrigerator inner tank body; the air duct assembly and the auxiliary air duct blow air to the inside of the vehicle refrigerator inner tank body, and the gas is guided by the return air baffle and then flows downward, passes through the evaporator, and then flows back to the air inlet at the bottom of the air duct assembly to form an air-cooled circulation structure.

2. The vehicle refrigerator structure for improving temperature uniformity according to claim 1, characterized in that: The air duct assembly consists of a circulation cavity and a support plate. The upper surface of the circulation cavity is provided with a main air outlet and an auxiliary air outlet at the front and rear ends; a circulation fan is provided at the bottom of the circulation cavity; and a return air outlet is provided at the tail of the air duct assembly.

3. The vehicle refrigerator structure for improving temperature uniformity according to claim 1, characterized in that: The auxiliary air duct is an inverted hollow U-shaped square tube structure, and one end of the auxiliary air duct is connected to the circulation cavity for air intake, and a control damper is provided at the connection.

4. The vehicle refrigerator structure for improving temperature uniformity according to claim 3, characterized in that: Three groups of blowing slots are arranged on the inner side of the auxiliary air duct, and the blowing slots include a primary blowing slot, a secondary blowing slot, and a tertiary blowing slot. The primary blowing slot is arranged on the vertical beam at the air inlet end of the auxiliary air duct, the secondary blowing slot is arranged in the middle of the middle cross beam of the auxiliary air duct, and the tertiary blowing slot is arranged in the middle of the end vertical beam.

5. The vehicle refrigerator structure for improving temperature uniformity according to claim 4, characterized in that: The size of the secondary blowing slot corresponds to that of the main air outlet, and the slot widths of the primary blowing slot, the secondary blowing slot, and the tertiary blowing slot are proportionally reduced.

6. The vehicle refrigerator structure for improving temperature uniformity according to claim 1, characterized in that: The return air baffle is supported by the supporting feet at the back to form a return air cavity between the return air baffle and the inner tank body of the vehicle refrigerator.

7. The vehicle refrigerator structure for improving temperature uniformity according to claim 6, characterized in that: The surface of the return air baffle is provided with a plurality of return air holes distributed in a matrix, and the apertures of the return air holes increase layer by layer from bottom to top.

8. The vehicle refrigerator structure for improving temperature uniformity according to claim 7, characterized in that: The outer side of the return air hole is staggered with a plurality of hemispherical protrusions for preventing blocking.

9. The vehicle refrigerator structure for improving temperature uniformity according to claim 1, characterized in that: A pair of heating tubes are arranged at the tail of the evaporator, and a water receiving tray is sleeved at the rear end of the heating tubes. The middle of the heating tubes is connected to the drainage pipe in the middle of the water receiving tray through a heat-conducting aluminum sheet.

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