A refrigeration system and electrical equipment

Abstract

This utility model relates to the technical field of ice cream machines, and proposes a refrigeration system and electrical equipment. The refrigeration system includes a compressor, and a condenser and an evaporator connected to the output end of the compressor. There are two or more evaporators, and each evaporator has a first input end and a second input end arranged independently at intervals. The first input end of each evaporator is connected to the output end of the condenser, and the output end of each evaporator is connected to the input end of the compressor. The refrigerant enters the evaporator through the compressor and condenser and flows back into the compressor to form a first refrigeration path. The output end of the compressor is also provided with a high-pressure bypass pipeline with an on / off state. The second input end of each evaporator is connected to the high-pressure bypass pipeline. When the high-pressure bypass pipeline is in the on state, the high-pressure gas output by the compressor enters the evaporator through the high-pressure bypass pipeline to form a second defrosting path, which is used to ensure that the high-pressure gas discharged by the compressor is evenly distributed to each evaporator.

Description

Technical Field

[0001] This utility model relates to the technical field of ice cream machines, specifically to a refrigeration system and electrical equipment. Background Technology

[0002] In traditional refrigeration systems, evaporators are typically connected in series, meaning the refrigerant flows through multiple evaporators sequentially before returning to the compressor. While this series system is simple in structure, it suffers from significant uneven cooling during actual operation.

[0003] Specifically, in a series system, the refrigerant partially evaporates and absorbs heat as it flows through the first evaporator, causing its pressure and temperature to decrease. The refrigerant in subsequent evaporators further degrades. Therefore, the evaporators closer to the compressor discharge side have a stronger cooling effect, while the cooling capacity of subsequent evaporators gradually weakens, resulting in uneven temperature distribution among the evaporators. Utility Model Content

[0004] This utility model proposes a refrigeration system and electrical equipment, which has two or more evaporators and the capillary tubes are connected in parallel and are identical. This ensures that the high-pressure gas discharged from the compressor is evenly distributed to each evaporator. Compared with a series system, this method effectively ensures that each evaporator receives high-pressure gas simultaneously and evenly, and avoids the problem of high-pressure gas being delivered sequentially by evaporators in a series system.

[0005] A refrigeration system designed for this purpose includes a compressor, and a condenser and an evaporator connected to the output of the compressor. The number of evaporators is two or more, and each evaporator has a first input terminal and a second input terminal that are independently spaced apart.

[0006] Each evaporator's first input terminal is independently connected to the condenser's output terminal, and each evaporator's output terminal is independently connected to the compressor's input terminal. The refrigerant passes through the compressor and condenser, enters each evaporator, and then flows back into the compressor to form the first refrigeration path.

[0007] The condenser output end is provided with several spaced capillary tubes, which form a group of capillary tubes arranged side by side. The first input end of each evaporator is connected to the condenser output end through an independent capillary tube.

[0008] The capillary tube is equipped with a throttling valve.

[0009] The compressor output end is also provided with a high-pressure bypass pipeline with on and off states. The second input end of each evaporator is connected to the high-pressure bypass pipeline. When the high-pressure bypass pipeline is in the on state, the high-pressure gas output by the compressor enters each evaporator through the high-pressure bypass pipeline to form a second defrosting path.

[0010] The high-pressure bypass line is equipped with a solenoid valve for switching the on / off state of the high-pressure bypass line. When the solenoid valve is open, the high-pressure gas discharged from the compressor directly enters each evaporator through the high-pressure bypass line. By directly introducing the high-pressure gas from the compressor into the evaporator through the solenoid valve without passing through the condenser, the evaporator changes from a cold state to a hot state, thereby de-icing.

[0011] The high-pressure bypass pipeline is provided with several spaced input pipes, which together form a group of input pipes arranged side by side. Each evaporator's second input end is connected to the high-pressure bypass pipeline through an independent input pipe.

[0012] The condenser is equipped with a cooling fan to assist in heat dissipation and improve refrigerant liquefaction efficiency.

[0013] The first input terminal and the second input terminal of the evaporator are both located on the same side of the evaporator, and the first input terminal and the second input terminal are arranged vertically or horizontally.

[0014] Alternatively, the first and second input terminals of the evaporator can be located on different sides of the evaporator.

[0015] The evaporator has a meandering flow path for the refrigerant to flow.

[0016] The condenser is a finned tube condenser or a plate condenser.

[0017] An electrical device designed for this purpose includes a body, the body housing the aforementioned refrigeration system, and the body housing a mounting cavity for mounting a compressor, a condenser, and an evaporator.

[0018] The electrical equipment includes a slush machine, an ice maker, an ice cream maker, or a refrigerator.

[0019] The beneficial technical effects of this utility model are as follows:

[0020] The number of evaporators is greater than or equal to two, and the capillary tubes are connected in parallel and are identical to ensure that the high-pressure gas discharged from the compressor is evenly distributed to each evaporator. Compared with the series system, this method effectively ensures that each evaporator receives high-pressure gas simultaneously and evenly, and avoids the problem of high-pressure gas being delivered sequentially to the evaporators in the series system. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a schematic diagram of the refrigeration system structure according to an embodiment of the present invention. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. In order to make the above-mentioned objects, features and advantages of the present application more apparent and understandable, many specific details are set forth in the following description in order to provide a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0024] See Figure 1 A refrigeration system, mainly for household use, includes a compressor 1, a condenser 2 and an evaporator 3 connected to the output end of the compressor 1, wherein there are two or more evaporators 3, and each evaporator 3 is provided with a first input end and a second input end that are independently spaced apart.

[0025] Each evaporator 3 has its first input terminal independently connected to the output terminal of the condenser 2, and each evaporator 3 has its output terminal independently connected to the input terminal of the compressor 1. The refrigerant passes through the compressor 1 and the condenser 2 and enters each evaporator 3 respectively, and then flows back into the compressor 1 to form the first refrigeration path.

[0026] The condenser 2 has several spaced-apart capillary tubes 6 at its output end, forming a capillary tube group arranged side-by-side. Each evaporator 3's first input end is connected to the condenser 2's output end via an independent capillary tube 6. This design optimizes the refrigerant distribution process. In traditional systems, the refrigerant flows through the evaporators in series, resulting in uneven flow and pressure distribution and significant differences in cooling performance. In this design, each evaporator 3 has an independent capillary tube 6, allowing independent control of the refrigerant flow and pressure, resulting in a more even distribution of refrigerant among the evaporators 3. Different evaporators 3 can obtain appropriate flow and pressure of refrigerant through independent capillary tubes 6 according to actual needs, avoiding situations where some evaporators 3 experience excessively strong or weak cooling due to uneven refrigerant distribution.

[0027] The capillary tube 6 is equipped with a throttling valve 7. The throttling valve 7 precisely throttles the refrigerant flowing through the capillary tube 6, regulating the refrigerant flow rate and pressure. Under different operating conditions, such as changes in ambient temperature or varying loads on the ice cream machine, adjusting the throttling valve 7 allows for precise control of the refrigerant flow rate into the evaporator 3, ensuring that the evaporator 3's cooling capacity matches actual demand. When the ambient temperature is high or there is a large amount of material inside the ice cream machine, the opening of the throttling valve 7 can be appropriately increased to increase the refrigerant flow rate and enhance the evaporator 3's cooling capacity; conversely, when demand is low, the opening of the throttling valve 7 can be decreased to reduce the refrigerant flow rate, avoiding over-cooling and energy waste. This precise flow and pressure regulation helps maintain stable cooling performance of the evaporator 3, further improving the refrigeration efficiency and energy-saving effect of the refrigeration system, ensuring the ice cream machine operates efficiently and stably under various conditions.

[0028] The compressor 1 is also provided with a high-pressure bypass pipeline 4 with an on / off state at the output end. The second input end of each evaporator 3 is connected to the high-pressure bypass pipeline 4. When the high-pressure bypass pipeline 4 is in the on state, the high-pressure gas output by the compressor 1 enters each evaporator 3 through the high-pressure bypass pipeline 4 to form a second defrosting path, so that the compressor 1 can individually input high-pressure gas for defrosting to each evaporator 3.

[0029] This household refrigeration system achieves independent operation of both cooling and defrosting paths by incorporating a high-pressure bypass pipeline and dual-input evaporators. In cooling mode, the refrigerant circulates through compressor 1, condenser 2, and evaporator 3. In defrosting mode, the high-temperature, high-pressure gas output from compressor 1 directly enters evaporator 3 through bypass pipeline 4 for rapid defrosting, without interrupting cooling or requiring an external heat source. The system supports multi-evaporator defrosting and features a simple structure, low energy consumption, and high temperature stability, making it particularly suitable for multi-compartment refrigerators, ice cream makers, and other household appliances.

[0030] The high-pressure bypass pipeline 4 is equipped with a solenoid valve 5 for switching the on / off state of the high-pressure bypass pipeline 4. When the solenoid valve 5 is open, the high-pressure gas discharged from the compressor 1 directly enters each evaporator 3 through the high-pressure bypass pipeline 4.

[0031] By installing a solenoid valve 5 on the high-pressure bypass line 4, precise switching between cooling and defrosting modes is achieved. When the solenoid valve 5 is open, the high-temperature, high-pressure gas discharged from the compressor 1 directly enters the evaporator 3 for rapid defrosting, avoiding the high energy consumption and low efficiency problems of traditional electric heating or reverse cycle defrosting. Simultaneously, the rapid response of the solenoid valve 5 ensures flexible switching between cooling and defrosting modes, reducing cooling loss and improving temperature stability. Furthermore, this structure simplifies the system control logic; only the on / off state of the solenoid valve 5 needs to be controlled to achieve synchronous defrosting of multiple evaporators, ensuring that the high-pressure gas output from the compressor 1 enters each evaporator 3 more evenly.

[0032] The high-pressure bypass pipeline 4 is equipped with several spaced-apart input pipes 8, which form a group of input pipes arranged side by side. The second input end of each evaporator 3 is connected to the high-pressure bypass pipeline 4 through an independent input pipe 8. Each evaporator 3 can obtain high-pressure gas from the high-pressure bypass pipeline 4 through an independent input pipe 8, ensuring that each evaporator 3 can receive high-pressure gas uniformly and stably during the operation of the second defrosting path.

[0033] The condenser 2 is equipped with a cooling fan 9 to assist in heat dissipation and improve refrigerant liquefaction efficiency. During refrigeration system operation, the condenser 2 cools and liquefies the high-temperature, high-pressure gaseous refrigerant, and its heat dissipation directly affects liquefaction efficiency. In traditional systems, relying solely on natural heat dissipation often results in poor condenser 2 cooling performance under high ambient temperatures or heavy system loads, leading to insufficient refrigerant liquefaction and affecting the normal operation of the refrigeration cycle. In this design, the cooling fan 9 forces airflow, accelerating heat dissipation from the condenser 2 surface and improving heat dissipation efficiency. Even under high-temperature environments or high-load operation, the cooling fan 9 ensures that the condenser 2 quickly and effectively cools and liquefies the refrigerant, allowing it to enter the subsequent evaporator 3 in a good liquid state, ensuring smooth refrigeration cycle operation. This not only improves the overall cooling capacity of the refrigeration system but also reduces the workload of the compressor 1, extends the service life of the compressor 1 and other equipment, and enhances the stability and reliability of the refrigeration system.

[0034] The first input terminal and the second input terminal of the evaporator 3 are both located on the same side of the evaporator 3, and the first input terminal and the second input terminal are arranged vertically or horizontally.

[0035] Alternatively, the first and second input terminals of evaporator 3 can be positioned on different sides of evaporator 3. Whether the first and second input terminals are both positioned on the same side of evaporator 3 and spaced vertically or horizontally, or on different sides, both options fully consider practical installation and usage requirements. Spacing them on the same side facilitates pipe connection and layout, allowing for a more compact installation of evaporator 3 within a limited space, reducing pipe crossings and tangles, lowering installation difficulty and cost, and also facilitating later maintenance and repair. Positioning them on different sides allows for optimization of refrigerant flow paths and evaporator 3 heat dissipation based on the internal spatial structure and airflow direction of the ice cream machine. A reasonable input terminal arrangement ensures more even distribution of refrigerant within evaporator 3, improving heat exchange efficiency and enhancing cooling performance. Furthermore, this flexible arrangement provides more possibilities for the overall structural design of the ice cream machine, contributing to its miniaturization and high efficiency, and meeting the needs of different users and usage scenarios.

[0036] The evaporator 3 is equipped with a tortuous flow path 10 for refrigerant flow. This design greatly optimizes the flow and heat exchange process of the refrigerant within the evaporator 3. The tortuous flow path 10 extends the flow path and residence time of the refrigerant within the evaporator 3, increasing the heat exchange area between the refrigerant and the evaporator 3, enabling more efficient absorption of surrounding heat and improving the cooling capacity of the evaporator 3.

[0037] The condenser 2 is a finned tube condenser or a plate condenser.

[0038] Finned tube condensers increase the heat dissipation area by adding fins, improving heat transfer efficiency and enabling rapid dissipation of heat from the refrigerant within a limited space, thus quickly cooling and liquefying the refrigerant. During ice cream machine operation, even under heavy cooling loads, finned tube condensers, with their large heat dissipation area and high efficiency, ensure normal refrigerant liquefaction and maintain a stable refrigeration cycle. Plate condensers, on the other hand, feature a compact structure and high heat exchange efficiency. Their unique plate structure allows for ample heat exchange between the refrigerant and cooling medium within a smaller space, resulting in significant heat dissipation.

[0039] Using plate condensers allows for a more compact structure in ice cream machines, saving space. Simultaneously, their efficient heat dissipation helps improve refrigerant liquefaction efficiency, enhancing the overall performance of the refrigeration system. Whether finned tube or plate condensers, they effectively meet the heat dissipation requirements of the refrigeration system, improving its reliability and stability, and ensuring the efficient operation of the ice cream machine.

[0040] An electrical device includes a body, the body of which is provided with the aforementioned refrigeration system, and the body is provided with a mounting cavity for installing a compressor 1, a condenser 2 and an evaporator 3.

[0041] The electrical equipment includes a slush machine, an ice maker, an ice cream maker, or a refrigerator.

[0042] When the electrical equipment is an ice cream machine, the evaporator 3 is made of two layers of stainless steel. The upper layer of stainless steel is used as a container for holding ice cream ingredients, and the lower layer of stainless steel is a fixing component. The gap between the container and the fixing component forms a flow path 10 for the refrigerant to flow. The fixing component has a first input end and a second input end on one side; and an output end on the other side of the fixing component. The refrigerant directly cools the container through the flow path 10, causing the ice cream to form.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A refrigeration system comprising a compressor (1), and a condenser (2) and an evaporator (3) connected to the output end of the compressor (1), characterized in that: The number of evaporators (3) is two or more, and each evaporator (3) is provided with a first input terminal and a second input terminal that are independently spaced apart; Each evaporator (3) has its first input terminal independently connected to the output terminal of the condenser (2), and each evaporator (3) has its output terminal independently connected to the input terminal of the compressor (1). The refrigerant passes through the compressor (1) and the condenser (2) and enters each evaporator (3) respectively, and then flows back to the compressor (1) to form the first refrigeration path.

2. The refrigeration system according to claim 1, characterized in that: The condenser (2) has several spaced capillary tubes (6) at its output end. The spaced capillary tubes (6) form a capillary tube group arranged side by side. The first input end of each evaporator (3) is connected to the output end of the condenser (2) through an independent capillary tube (6). The capillary tube (6) is equipped with a throttle valve (7).

3. The refrigeration system according to claim 1, characterized in that: The compressor (1) is also provided with a high-pressure bypass pipeline (4) with an on / off state at the output end. Each evaporator (3) is independently connected to the high-pressure bypass pipeline (4) at the second input end. When the high-pressure bypass pipeline (4) is in the on state, the high-pressure gas output by the compressor (1) enters each evaporator (3) through the high-pressure bypass pipeline (4) to form a second defrosting path, so that the compressor (1) can individually input high-pressure gas for defrosting to each evaporator (3).

4. The refrigeration system according to claim 3, characterized in that: The high-pressure bypass pipeline (4) is equipped with a solenoid valve (5) for switching the on / off state of the high-pressure bypass pipeline (4). When the solenoid valve (5) is open, the high-pressure gas discharged by the compressor (1) directly enters each evaporator (3) through the high-pressure bypass pipeline (4).

5. The refrigeration system according to claim 3, characterized in that: The high-pressure bypass pipeline (4) is provided with several spaced input pipes (8), and the spaced input pipes (8) form a group of input pipes arranged side by side. The second input end of each evaporator (3) is connected to the high-pressure bypass pipeline (4) through an independent input pipe (8).

6. The refrigeration system according to claim 1, characterized in that: The condenser (2) is equipped with a cooling fan (9) to assist the condenser (2) in dissipating heat and improve the refrigerant liquefaction efficiency.

7. The refrigeration system according to claim 1, characterized in that: The first input end and the second input end of the evaporator (3) are both located on the same side of the evaporator (3), and the first input end and the second input end are arranged vertically or horizontally. Alternatively, the first input end and the second input end of the evaporator (3) are located on different sides of the evaporator (3).

8. The refrigeration system according to claim 1, characterized in that: The evaporator (3) has a meandering flow path (10) for the refrigerant to flow.

9. The refrigeration system according to claim 1, characterized in that: The condenser (2) is a finned tube condenser or a plate condenser.

10. An electrical device, comprising a body, characterized in that: The machine body is provided with a refrigeration system as described in any one of claims 1-9, and the machine body is provided with an installation cavity for installing a compressor (1), a condenser (2) and an evaporator (3); The electrical equipment includes a slush machine, an ice maker, an ice cream maker, or a refrigerator.

Images