Dual evaporator refrigeration device and vending machine

Abstract

The utility model discloses a double evaporator refrigeration plant and vending machine, including compressor, first control part, first evaporator, first throttings, second control part, second evaporator, second throttings and condenser, the first end of compressor is connected with first pipeline and second pipeline, the first control part, first evaporator and first throttings are equipped in proper order on first pipeline, second control part, second evaporator and second throttings are equipped in proper order on second pipeline, first throttings with second throttings are connected with the first end of condenser through pipeline respectively, the second end of condenser is connected with the second end of compressor through pipeline.

Description

Technical Field

[0001] This utility model relates to the field of vending machine technology, and in particular to a dual evaporator refrigeration device and a vending machine. Background Technology

[0002] Vending machines are commonly used equipment in commercial automation. They are not limited by time or location, save manpower, and facilitate transactions, representing a new form of retail, often referred to as 24-hour mini-supermarkets. Furthermore, with market changes, vending machines have evolved into various styles, including those with refrigeration units.

[0003] When the refrigeration unit is cooling, the evaporator will frost up. Generally, after the refrigeration unit has been cooling continuously for a certain period of time, it needs to stop cooling and defrost the evaporator. However, during defrosting, the internal temperature of the vending machine rises because the refrigeration unit stops cooling. Then, when the refrigeration unit is restarted, the internal temperature of the vending machine drops. This results in a large temperature difference between before and after the defrosting process, which affects the quality of the products sold in the vending machine. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a dual evaporator refrigeration device and a vending machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the first aspect of this utility model provides a dual-evaporator refrigeration device including a compressor, a first control component, a first evaporator, a first throttling component, a second control component, a second evaporator, a second throttling component, and a condenser;

[0006] The compressor is connected to a first pipeline and a second pipeline at its first end;

[0007] The first pipeline is sequentially provided with the first control component, the first evaporator, and the first throttling component;

[0008] The second pipeline is sequentially equipped with the second control component, the second evaporator, and the second throttling component;

[0009] The first throttling element and the second throttling element are respectively connected to the first end of the condenser through pipelines;

[0010] The second end of the condenser is connected to the second end of the compressor via a pipeline.

[0011] Furthermore, a first heat dissipation component is provided on one side of the first evaporator, and the first heat dissipation component is used to dissipate heat from the first evaporator;

[0012] A second heat dissipation component is provided on one side of the second evaporator, which is used to dissipate heat from the second evaporator.

[0013] Furthermore, both the first heat sink and the second heat sink are cooling fans.

[0014] Furthermore, the first control element is a first solenoid valve; the first solenoid valve is used to control the opening and closing of the first pipeline;

[0015] The second control component is a second solenoid valve; the second solenoid valve is used to control the opening and closing of the second pipeline.

[0016] Furthermore, both the first throttling device and the second throttling device are selected from capillary tubes, electronic expansion valves, or throttling valves.

[0017] Furthermore, the refrigeration device also includes a support frame; the support frame is provided with an insulation chamber, and both the first evaporator and the second evaporator are located inside the insulation chamber.

[0018] Furthermore, the insulated chamber is equipped with an insulated partition, which divides the insulated chamber into a first insulated chamber and a second insulated chamber; the first evaporator is located in the first insulated chamber, and the second evaporator is located in the second insulated chamber.

[0019] Furthermore, the insulation chamber is provided with multiple pipe passage holes for pipelines to pass through.

[0020] Furthermore, the bracket is provided with a support member, and the first control member and the second control member are respectively installed on the support member.

[0021] The second aspect of this utility model provides a vending machine, including a dual-evaporator refrigeration device.

[0022] Compared with the prior art, this utility model brings the following technical effects:

[0023] This utility model's dual-evaporator refrigeration device starts working after the vending machine is powered on. Once operational, it first opens one pipe and closes the other, for example, opening the first pipe and closing the second. At this point, the first evaporator begins refrigeration. After the first pipe has been running for a period, it is closed and the second pipe is opened. The first evaporator on the first pipe then defrosts, while the second evaporator on the second pipe begins refrigeration. After the second pipe has been running for a period, it is closed and the first pipe is opened. The first evaporator on the first pipe then refrigerates, while the second evaporator on the second pipe defrosts. This cycle repeats, ensuring that at least one evaporator is refrigerating while the other is defrosting when refrigeration is needed, thus maintaining a controllable temperature within the vending machine. It should be noted that to prevent the temperature inside the vending machine from becoming too low, the entire cooling system needs to be shut down periodically. This can be controlled by a time period and / or a minimum preset temperature. That is, after the entire cooling system has been running for a period, it will stop operating for a period to prevent the temperature inside the vending machine from becoming too low; and / or when the temperature sensor inside the vending machine detects that the temperature has reached the minimum preset temperature, the entire cooling system will stop operating for a period to prevent the temperature inside the vending machine from becoming too low; when the temperature inside the vending machine reaches the maximum preset temperature, the cooling system will start again to prevent the temperature inside the vending machine from becoming too high. Therefore, during operation, the vending machine must ensure that the temperature inside the vending machine is always between the minimum preset temperature value and the maximum preset temperature value. It should be noted that if only one evaporator is used, the temperature inside the vending machine may exceed the maximum preset temperature value at certain times, which may affect the quality of the products sold in the vending machine. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the dual evaporator refrigeration device of this utility model.

[0026] Figure 2 This is a schematic diagram of the structure of the dual evaporator refrigeration device of this utility model after removing some of its components.

[0027] Figure 3 This is a schematic diagram of the connection pipeline of the dual evaporator refrigeration device of this utility model.

[0028] Explanation of key component symbols:

[0029] 1-Compressor, 2-First control unit, 3-First evaporator, 4-First throttling element, 5-Second control unit, 6-Second evaporator, 7-Second throttling element, 8-Condenser, 9-First pipeline, 10-Second pipeline, 11-First heat dissipation element, 12-Second heat dissipation element, 13-Bracket, 1301-Insulation partition, 1302-First insulation chamber, 1303-Second insulation chamber, 1304-Through hole, 1305-Supporting element. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] The descriptions of "specific examples" or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] Example 1

[0037] A dual-evaporator refrigeration unit includes a compressor 1, a first control unit 2, a first evaporator 3, a first throttling element 4 (not shown in the structural diagram), a second control unit 5, a second evaporator 6, a second throttling element 7 (not shown in the structural diagram), and a condenser 8.

[0038] The first end of the compressor 1 is connected to a first pipe 9 and a second pipe 10;

[0039] The first control component 2, the first evaporator 3, and the first throttling component 4 are sequentially provided on the first pipeline 9;

[0040] The second pipeline 10 is sequentially provided with the second control component 5, the second evaporator 6, and the second throttling component 7;

[0041] The first throttling element 4 and the second throttling element 7 are respectively connected to the first end of the condenser 8 through pipelines;

[0042] The second end of the condenser 8 is connected to the second end of the compressor 1 via a pipeline.

[0043] In this embodiment, when the vending machine is powered on and started, the refrigeration unit begins to work. Once the refrigeration unit is working, it first opens one pipe and closes the other. For example, it first opens pipe 9 and closes pipe 10. At this time, the first evaporator 3 begins refrigeration. After pipe 9 has been running for a period of time, it closes and opens pipe 10. At this time, the first evaporator 3 on pipe 9 begins defrosting, and the second evaporator 6 on pipe 10 begins refrigeration. After pipe 10 has been running for a period of time, it closes and opens pipe 9. At this time, the first evaporator 3 on pipe 9 begins refrigeration, and the second evaporator 6 on pipe 10 begins defrosting. This cycle repeats, so when the vending machine needs refrigeration, at least one evaporator is in refrigeration mode, while the other evaporator is defrosting. This ensures that the temperature inside the vending machine remains within a controllable range. It should be noted that to prevent the temperature inside the vending machine from becoming too low, the entire cooling system needs to be shut down periodically. This can be controlled by a time period and / or a minimum preset temperature. That is, after the entire cooling system has been running for a period, it will stop operating for a period to prevent the temperature inside the vending machine from becoming too low; and / or when the temperature sensor inside the vending machine detects that the temperature has reached the minimum preset temperature, the entire cooling system will stop operating for a period to prevent the temperature inside the vending machine from becoming too low; when the temperature inside the vending machine reaches the maximum preset temperature, the cooling system will start again to prevent the temperature inside the vending machine from becoming too high. Therefore, during operation, the vending machine must ensure that the temperature inside the vending machine is always between the minimum preset temperature value and the maximum preset temperature value. It should be noted that if only one evaporator is used, the temperature inside the vending machine may exceed the maximum preset temperature value at certain times, which may affect the quality of the products sold in the vending machine.

[0044] Furthermore, a first heat dissipation component 11 is provided on one side of the first evaporator 3, and the first heat dissipation component 11 is used to dissipate heat from the first evaporator 3.

[0045] A second heat dissipation component 12 is provided on one side of the second evaporator 6, and the second heat dissipation component 12 is used to dissipate heat from the second evaporator 6.

[0046] Furthermore, both the first heat sink 11 and the second heat sink 12 are cooling fans.

[0047] In this embodiment, both the first heat sink 11 and the second heat sink 12 are cooling fans. Cooling fans are low in cost and have a stable and reliable structure. The first heat sink 11 and the second heat sink 12 not only serve to defrost the first evaporator 3 and the second evaporator 6, but also deliver the cold air generated by the first evaporator 3 and the second evaporator 6 to the vending machine.

[0048] Furthermore, the first control element 2 is a first solenoid valve; the first solenoid valve is used to control the opening and closing of the first pipeline 9;

[0049] The second control component 5 is a second solenoid valve; the second solenoid valve is used to control the opening and closing of the second pipeline 10.

[0050] Furthermore, both the first throttling element 4 and the second throttling element 7 are selected from capillary tubes, electronic expansion valves, or throttling valves.

[0051] In this embodiment, both the first throttling element 4 and the second throttling element 7 are capillary tubes. Capillary tubes are not only low in cost, but also have a stable structure. After installation, the parameters of the capillary tubes can be adjusted.

[0052] In other embodiments, the throttling device can also be an electronic expansion valve, which is better suited to high-pressure, high-flow fluid throttling and can handle a wider range of working conditions compared to a capillary tube. At the same time, the electronic expansion valve has higher precision and can adjust the flow rate. However, compared to a capillary tube, the electronic expansion valve is more expensive and less durable.

[0053] In other embodiments, the throttling element can also be a throttling valve, the cost of which is between that of a capillary tube and an electronic expansion valve, while the capillary tube can also regulate the flow rate.

[0054] Furthermore, the refrigeration device also includes a support frame 13; the support frame 13 is provided with an insulation chamber, and the first evaporator 3 and the second evaporator 6 are both located in the insulation chamber.

[0055] Furthermore, the insulation chamber is provided with an insulation partition 1301, which divides the insulation chamber into a first insulation chamber 1302 and a second insulation chamber 1303; the first evaporator 3 is located in the first insulation chamber 1302, and the second evaporator 6 is located in the second insulation chamber 1303.

[0056] Furthermore, the insulation chamber is provided with multiple pipe passage holes 1304, which are used for pipes to pass through.

[0057] In this embodiment, the first evaporator 3 and the second evaporator 6 are respectively installed in the first insulation chamber 1302 and the second insulation chamber 1303, which can effectively prevent the loss of cold air from the first evaporator 3 and the second evaporator 6. At the same time, a through-hole 1304 is provided on the insulation chamber to facilitate the connection of the first evaporator 3 and the second evaporator 6 with other components and pipelines of the refrigeration device. It should also be noted that the first insulation chamber 1302 and the second insulation chamber 1303 are both connected to the storage chamber inside the vending machine, so that the cold air generated in the first insulation chamber 1302 and the second insulation chamber 1303 can enter the storage chamber inside the vending machine.

[0058] Furthermore, the bracket 13 is provided with a support member 1305, and the first control member 2 and the second control member 5 are respectively installed on the support member 1305.

[0059] Example 2

[0060] The vending machine includes a dual-evaporator refrigeration unit. The vending machine of this embodiment includes all the technical features and effects of Embodiment 1, and therefore will not be repeated here.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments, as long as they meet the purpose of the present invention, and all such changes should be within the scope of protection claimed by the present invention. For example, different combinations of specific embodiments and different combinations of distinguishing technical features.

Claims

1. A dual-evaporator refrigeration device, characterized in that: It includes a compressor (1), a first control unit (2), a first evaporator (3), a first throttling device (4), a second control unit (5), a second evaporator (6), a second throttling device (7), and a condenser (8); The compressor (1) is connected to a first pipeline (9) and a second pipeline (10) at its first end; The first pipeline (9) is sequentially provided with the first control component (2), the first evaporator (3) and the first throttling component (4); The second pipeline (10) is provided with the second control component (5), the second evaporator (6) and the second throttling component (7) in sequence; The first throttling element (4) and the second throttling element (7) are respectively connected to the first end of the condenser (8) through pipelines; The second end of the condenser (8) is connected to the second end of the compressor (1) via a pipeline.

2. The dual-evaporator refrigeration device according to claim 1, characterized in that: The first evaporator (3) is provided with a first heat dissipation component (11) on one side, and the first heat dissipation component (11) is used to dissipate heat from the first evaporator (3); A second heat dissipation component (12) is provided on one side of the second evaporator (6), and the second heat dissipation component (12) is used to dissipate heat from the second evaporator (6).

3. The dual-evaporator refrigeration device according to claim 2, characterized in that: Both the first heat sink (11) and the second heat sink (12) are cooling fans.

4. The dual-evaporator refrigeration device according to claim 1, characterized in that: The first control element (2) is a first solenoid valve; the first solenoid valve is used to control the opening and closing of the first pipeline (9); The second control component (5) is a second solenoid valve; the second solenoid valve is used to control the opening and closing of the second pipeline (10).

5. The dual-evaporator refrigeration device according to claim 1, characterized in that: Both the first throttling device (4) and the second throttling device (7) are selected from capillary tubes, electronic expansion valves or throttling valves.

6. The dual-evaporator refrigeration device according to claim 1, characterized in that: The refrigeration device also includes a support (13); the support (13) is provided with an insulation chamber, and the first evaporator (3) and the second evaporator (6) are both located in the insulation chamber.

7. The dual-evaporator refrigeration device according to claim 6, characterized in that: The insulated chamber is provided with an insulated partition (1301), which divides the insulated chamber into a first insulated chamber (1302) and a second insulated chamber (1303); the first evaporator (3) is located in the first insulated chamber (1302), and the second evaporator (6) is located in the second insulated chamber (1303).

8. The dual-evaporator refrigeration device according to claim 6, characterized in that: The insulation chamber is provided with multiple pipe passage holes (1304), which are used for pipelines to pass through.

9. The dual-evaporator refrigeration device according to claim 6, characterized in that: The bracket (13) is provided with a support member (1305), and the first control member (2) and the second control member (5) are respectively installed on the support member (1305).

10. A vending machine, characterized in that: Includes the dual evaporator refrigeration device as described in any one of claims 1-9.

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