Container refrigerator capable of preventing evaporator from frosting and blocking

Abstract

The invention discloses a container refrigerator capable of preventing an evaporator from frosting and blocking, which comprises a container main body, the container main body is provided with a refrigerator main body, the refrigerator main body comprises an evaporator component and an air supply component, the refrigerator main body is of a closed shell structure, and a refrigeration cavity for placing the evaporator component is formed in the refrigerator main body. Laminar flow is converted into turbulent flow through the airflow disturbance pieces formed by arranging long-strip-shaped straight plates in a staggered mode, local frosting can be reduced, an initial frost layer is loosened, the design that the evaporator is integrally inclined towards a frost collecting groove is matched, the frost layer is guided to naturally slide down through gravity component force, and the problem that the frost layer is difficult to completely fall off through pure airflow is solved. Meanwhile, the frost collecting groove and the defrosting plate driven by the electric sliding rail form an automatic defrosting component, automatic collection and discharging of the frost layer are achieved, manual intervention is not needed, and energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of container transportation, in particular to a container freezer capable of preventing frosting of evaporator. BACKGROUND

[0002] In the container cold chain transportation, the freezer is the core equipment for maintaining the low temperature in the box, and the evaporator thereof realizes refrigeration by absorbing heat through evaporation of refrigerant. However, in actual use, when the humid hot air in the container contacts the low-temperature evaporator, water vapor is easy to condense into frost on the surface of the evaporator. If the frost layer is accumulated too thick, it will block the heat exchange gap of the evaporator, resulting in a sharp drop in heat exchange efficiency, and even affect the normal operation of the freezer. Meanwhile, the removal of the frost layer depends on manual work, which consumes a lot of time cost and human resources. SUMMARY

[0003] The present application aims at solving the defects in the prior art that "when the humid hot air in the container contacts the low-temperature evaporator, water vapor is easy to condense into frost on the surface of the evaporator. If the frost layer is accumulated too thick, it will block the heat exchange gap of the evaporator, resulting in a sharp drop in heat exchange efficiency, and even affect the normal operation of the freezer. Meanwhile, the removal of the frost layer depends on manual work, which consumes a lot of time cost and human resources", and proposes a container freezer capable of preventing frosting of evaporator.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: A container freezer capable of preventing frosting of evaporator, comprising: a container main body, a freezer main body is installed on the container main body, the freezer main body comprises an evaporator assembly and a air supply component, the freezer main body is a closed shell structure, and a refrigeration cavity for placing the evaporator component is formed in the inside of the freezer main body.

[0005] As a preferred scheme of the container freezer capable of preventing frosting of evaporator, the freezer main body is provided with an air supply port and an air return port which are in communication with the inside of the container main body, the air supply port and the air return port are in communication with the refrigeration cavity, and the evaporator component is arranged in the refrigeration cavity and located between the air supply port and the air supply component.

[0006] As a preferred scheme of the container freezer capable of preventing frosting of evaporator, the evaporator component comprises a mounting rack fixedly arranged in the refrigeration cavity, a plurality of heat exchange pipes are arranged on the mounting rack, and heat dissipation fins are arranged on the heat exchange pipes and spaced apart along the length direction of the heat exchange pipes.

[0007] As a preferred scheme of the container freezer for preventing the evaporator from being blocked by frost, wherein: the air supply component comprises an air inlet arranged on one side of the freezer body, an air supply channel, and an air deflector, and a plurality of air flow disturbance components are arranged in the air supply channel.

[0008] As a preferred scheme of the container freezer for preventing the evaporator from being blocked by frost, wherein: the air flow disturbance component is a long straight plate structure, the length direction of which is parallel to the air flow direction of the air supply channel, one end of the air flow disturbance component is fixed to the inner wall of the air supply channel by a bolt, the other end extends towards the evaporator component, and a plurality of air flow disturbance components are arranged in an interlaced and spaced manner along the length direction of the air supply channel.

[0009] As a preferred scheme of the container freezer for preventing the evaporator from being blocked by frost, wherein: the air deflector is an arc-shaped plate structure on the side close to the evaporator component, and one side edge of the air deflector is connected by a hinge, so that the air deflector can rotate towards or away from the evaporator component to adjust the angle range of the air flow blowing towards the evaporator component.

[0010] As a preferred scheme of the container freezer for preventing the evaporator from being blocked by frost, wherein: a defrost component for collecting and removing the falling frost layer and a drainage groove for drainage are arranged below the evaporator component.

[0011] As a preferred scheme of the container freezer for preventing the evaporator from being blocked by frost, wherein: the defrost component comprises a frost collecting groove arranged below the evaporator component, the frost collecting groove is a groove structure with an inclined bottom, the groove opening faces upwards and is opposite to the heat dissipation fins, and the length of the frost collecting groove is slightly longer than the transverse length of the plurality of fins.

[0012] As a preferred scheme of the container freezer for preventing the evaporator from being blocked by frost, wherein: the defrost component further comprises an electric sliding rail arranged in the freezer body, an electric sliding block is slidably arranged on the electric sliding rail, a connecting rod is connected to the electric sliding block, and a defrost plate is arranged at the upper end of the connecting rod and cooperates with the frost collecting groove.

[0013] As a preferred scheme of the container freezer for preventing the evaporator from being blocked by frost, wherein: the evaporator component is arranged in an inclined manner, and the inclination direction is towards the frost collecting groove, so that the frost layer on the surface of the heat dissipation fin can naturally slide down to the frost collecting groove along the inclined surface.

[0014] Compared with the prior art, the present application has the following advantages: The air flow disturbance member arranged in long strip straight plate in staggered manner converts laminar flow into turbulent flow, which can reduce local frost and loosen initial frost layer, and the whole evaporator is designed to be inclined to the frost collecting groove, the frost layer is guided to slide naturally by using gravity component force, the problem that the frost layer cannot be completely removed by air flow alone is solved; meanwhile, the frost collecting groove and the defrosting plate driven by the electric slide rail form an automatic defrosting component, the frost layer is automatically collected and discharged without manual intervention, and the energy consumption is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A perspective view of a container refrigerator for preventing frosting and blocking of an evaporator is provided in the present application; Figure 2 A schematic diagram of a refrigerator main body structure of a container refrigerator for preventing frosting and blocking of an evaporator is provided in the present application; Figure 3 A schematic diagram of a refrigerator internal structure of a container refrigerator for preventing frosting and blocking of an evaporator is provided in the present application; Figure 4 A schematic diagram of a refrigerator evaporator assembly structure of a container refrigerator for preventing frosting and blocking of an evaporator is provided in the present application; Figure 5 A schematic diagram of a refrigerator frost collecting groove structure of a container refrigerator for preventing frosting and blocking of an evaporator is provided in the present application; Figure 6 A schematic diagram of a refrigerator defrosting component structure of a container refrigerator for preventing frosting and blocking of an evaporator is provided in the present application.

[0016] In the figure: 101, container main body; 102, refrigerator main body; 201, air supply port; 202, return air port; 203, evaporator component; 2031, mounting bracket; 2032, heat exchange pipe; 2033, heat dissipation fin; 204, air supply component; 2041, air inlet; 2042, air supply channel; 2043, air deflector; 205, refrigeration cavity; 206, defrosting component; 2061, frost collecting groove; 2062, electric slide rail; 2063, electric slide block; 2064, connecting rod; 2065, defrosting plate; 207, drain groove. DETAILED DESCRIPTION

[0017] The embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0018] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "set", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0019] Referring to Figures 1-6 A container freezer for preventing the evaporator from frosting and blocking, the container body 101, the freezer body 102 is installed on the container body 101, the freezer body 102 includes, evaporator assembly and air supply part 204, the freezer body 102 is a closed shell structure, the inside is provided with a refrigeration cavity 205 for placing evaporator part 203, in order to ensure that the air in the box is continuously cooled, the freezer body 102 side is provided with air supply port 201 and return air port 202 which are communicated with the inside of the container body 101, air supply port 201 and return air port 202 are communicated with refrigeration cavity 205, evaporator part 203 is arranged in refrigeration cavity 205 and located between air supply port 201 and air supply part 204, so that the airflow can fully contact the evaporator before entering the container, maximizing the heat exchange efficiency.

[0020] Among them, the evaporator part 203, including the mounting frame 2031 fixedly arranged in the refrigeration cavity 205, a plurality of heat exchange pipes 2032 are arranged on the mounting frame 2031, the heat exchange pipes 2032 are sleeved with heat dissipation fins 2033 which are distributed along the length direction of the heat exchange pipes 2032, the heat dissipation fins 2033 can improve the heat exchange efficiency by increasing the contact area with the air.

[0021] If the airflow enters the evaporator in a laminar state, it is easy to form dead corners between the fins, leading to serious local frosting. The staggered arrangement of the airflow disturbance members in the form of long straight plates can convert laminar flow into turbulent flow, causing the airflow to uniformly impact every area of the heat dissipation fins 2033, reducing local frosting. At the same time, the impact of turbulent flow can loosen the initial frost layer, preparing for subsequent sliding. The air supply component 204 includes an air inlet 2041, an air supply channel 2042, and a deflector 2043 arranged on one side of the freezer body 102. The air supply channel 2042 is provided with multiple groups of airflow disturbance members for disturbing the airflow. The airflow disturbance members are long straight plates with their length direction parallel to the airflow direction of the air supply channel 2042. One end of the airflow disturbance member is fixed to the inner wall of the air supply channel 2042 by a bolt, and the other end extends towards the evaporator component 203. The airflow disturbance members are arranged in a staggered manner along the length direction of the air supply channel 2042. The deflector 2043 is an arc-shaped plate structure on the side close to the evaporator component 203. The side edge of the deflector 2043 is connected by a hinge, allowing the deflector 2043 to rotate towards or away from the evaporator component 203 to adjust the angle range of the airflow blowing towards the evaporator component 203.

[0022] Considering that the frost layer needs to be collected and discharged in time after falling off to avoid secondary accumulation, a defrosting component 206 for collecting and removing the falling frost layer and a drain groove 207 for discharge are arranged below the evaporator component 203. The defrosting component 206 includes a frost collection groove 2061 arranged below the evaporator assembly. The frost collection groove 2061 is a groove structure with the bottom inclined downward. The groove opening faces upward and directly opposite to the heat dissipation fins 2033. The length of the frost collection groove 2061 is slightly longer than the transverse length of the multiple groups of fins. The defrosting component 206 also includes an electric sliding rail 2062 arranged in the freezer body 102. An electric sliding block 2063 is slidably arranged on the electric sliding rail 2062. A connecting rod 2064 is connected to the electric sliding block 2063. A defrosting plate 2065 is arranged on the upper end of the connecting rod 2064 and cooperates with the frost collection groove 2061. The frost layer has adhesion force with the surface of the heat dissipation fins 2033, and it is difficult to completely fall off relying on airflow alone. After the evaporator is inclined, the frost layer will be subjected to the downward gravitational component force along the inclined surface, which can overcome the adhesion force and guide the frost layer to naturally slide along the fin surface to the frost collection groove 2061. In combination with the loosening effect of airflow disturbance, the defrosting efficiency is greatly improved. The evaporator component 203 is inclined as a whole, with the inclination direction towards the frost collection groove 2061, so that the frost layer on the surface of the heat dissipation fins 2033 can naturally slide down to the frost collection groove 2061 along the inclined surface.

[0023] In summary, the working process of the present scheme is as follows: The refrigerator main body 102 starts, the refrigerant circulates in the heat exchange pipe 2032 to evaporate and absorb heat, so that the evaporator assembly maintains low temperature, the air supply part 204 works, the wet hot air in the container main body 101 enters the refrigeration cavity 205 through the return air inlet 202, then enters the air supply channel 2042, the airflow disturbance part in the air supply channel 2042 converts the airflow into turbulent flow, the turbulent flow is adjusted by the angle of the air deflector 2043, and then uniformly impacts the heat dissipation fins 2033 of the evaporator assembly; the wet hot air contacts the low temperature fins and the heat exchange pipe 2032, the water vapor condenses into frost, and at the same time the air is cooled, and is sent back to the container main body 101 through the air supply inlet 201, to complete the refrigeration cycle; the evaporator assembly is arranged obliquely, under the combined action of the gravity component force and the turbulent flow impact, the frost layer on the fin surface slides downward along the inclined surface, and finally falls into the frost collecting groove 2061 below; the bottom of the frost collecting groove 2061 is inclined, and the frost layer converges to the drain groove 207; when the frost layer in the frost collecting groove 2061 accumulates to a certain degree, the electric slide rail 2062 drives the electric sliding block 2063 to move, drives the connecting rod 2064 and the defrosting plate 2065 to slide along the groove body, pushes the frost layer to the drain groove 207 to discharge, and ensures that the frost collecting groove 2061 is not blocked.

[0024] It is worth noting that the entire device is controlled by a controller, and since the controller is a commonly used device, it belongs to existing mature technology, and its electrical connection relationship and specific circuit structure will not be described here.

[0025] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. In the description of the present application, it should be noted that the terms "up, down, inside and outside" indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first, second or third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

Claims

1. A container freezer for preventing frosting of an evaporator, comprising: Container body (101), the container body (101) is installed with freezer body (102), characterized by: the freezer body (102) includes, evaporator assembly and air supply part (204), the freezer body (102) is closed shell structure, its inside is opened with the refrigeration cavity (205) for placing evaporator part (203).

2. A container freezer to prevent frosting of an evaporator according to claim 1, characterized in that: The freezer body (102) side is opened with the air supply port (201) and the return air port (202) that container body (101) inside intercommunication, the air supply port (201) and the return air port (202) are all with refrigeration cavity (205) intercommunication, the evaporator part (203) is set in the refrigeration cavity (205) and is located between air supply port (201) and air supply part (204).

3. A container freezer to prevent frosting of an evaporator according to claim 2, characterized in that: The evaporator part (203) includes the mounting bracket (2031) fixedly arranged in the refrigeration cavity (205), a plurality of heat exchange pipes (2032) are penetrated on the mounting bracket (2031), and heat dissipation fins (2033) are sleeved on the heat exchange pipes (2032) and are distributed along the length direction of the heat exchange pipes (2032).

4. A container freezer to prevent frosting of an evaporator according to claim 1, characterized in that: The air supply part (204) includes the air inlet (2041) arranged on one side of the freezer body (102), the air supply channel (2042) and the air deflector (2043), a plurality of air flow disturbance members for disturbing air flow are arranged in the air supply channel (2042).

5. A container freezer to prevent frosting of an evaporator according to claim 4, characterized in that: The air flow disturbance member is a long strip-shaped straight plate structure, the length direction of the air flow disturbance member is parallel to the air flow direction of the air supply channel (2042), one end of the air flow disturbance member is fixed in the inner wall of the air supply channel (2042) through a bolt, the other end extends in the direction of the evaporator part (203), and a plurality of air flow disturbance members are arranged in an interlaced and spaced manner along the length direction of the air supply channel (2042).

6. A container freezer to prevent frosting of an evaporator according to claim 5, characterized in that: The air deflector (2043) is an arc-shaped plate structure on the side close to the evaporator part (203), and one side edge of the air deflector (2043) is connected through a hinge, so that the air deflector (2043) can rotate towards the direction close to or away from the evaporator part (203) to adjust the angle range of the air flow blowing to the evaporator part (203).

7. A container freezer to prevent frosting of an evaporator according to claim 1, characterized in that: The evaporator part (203) is provided below with a defrosting part (206) for collecting and removing the frost layer and a drain groove (207) for drainage.

8. A container freezer to prevent frosting of an evaporator according to claim 7, characterized in that: The defrosting part (206) includes a frost collecting groove (2061) arranged below the evaporator assembly, the frost collecting groove (2061) is a groove structure with the bottom inclined downward, the groove opening faces upward and is opposite to the heat dissipation fins (2033), and the length of the frost collecting groove (2061) is slightly longer than the transverse length of the plurality of fins.

9. A container freezer to prevent frosting of an evaporator according to claim 7, characterized in that: The defrosting part (206) further includes an electric sliding rail (2062) arranged in the freezer body (102), an electric sliding block (2063) is slidably arranged on the electric sliding rail (2062), a connecting rod (2064) is connected to the electric sliding block (2063), and a defrosting plate (2065) is arranged at the upper end of the connecting rod (2064) and cooperates with the frost collecting groove (2061).

10. A container freezer to prevent frosting of an evaporator according to claim 8, characterized in that: The evaporator component (203) is arranged in an inclined manner as a whole, and the inclined direction is towards the frost collecting groove (2061), so that the frost layer on the surface of the heat dissipation fin (2033) can slide naturally along the inclined surface to the frost collecting groove (2061).

Images