Refrigeration unit, refrigeration control device and system

Abstract

The utility model discloses a refrigerating unit, refrigeration control device and system, refrigerating unit includes shell and evaporative unit, and shell is provided with evaporative cavity, and evaporative cavity is located indoor side, and shell is provided with at least two first air inlet face, and first air inlet face is provided with air inlet, and air inlet is used for the intercommunication indoor side and evaporative cavity, evaporative unit sets up in evaporative cavity, and evaporative unit includes evaporimeter, and evaporimeter is located the inboard of first air inlet face, and the air inlet direction of first air inlet face all is to the air inlet side surface of evaporimeter, to make increase evaporimeter's heat transfer area. This layout makes air be able to flow to evaporimeter from multiple directions simultaneously, greatly increased air and evaporimeter's contact area, namely increased evaporimeter's heat transfer area. Compared with the refrigerating unit of traditional only single side air inlet, the utility model can make evaporimeter in the same time with more air heat exchange, thereby accelerated heat exchange speed, improved refrigeration efficiency.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, and in particular to a refrigeration unit, refrigeration control device and system. Background Technology

[0002] A refrigeration unit is a common type of equipment used for refrigeration, typically consisting of a casing, evaporator, compressor, condenser, and fan. It is widely used in commercial, industrial, and residential sectors, and is evolving towards higher efficiency, energy saving, environmental friendliness, and intelligent operation.

[0003] The evaporator is a key component of a refrigeration unit, achieving cooling by absorbing heat from the medium being cooled through a phase change of the refrigerant. A larger evaporation area results in more efficient heat exchange and better cooling; conversely, a smaller evaporation area leads to insufficient heat exchange between the refrigerant and the medium being cooled, significantly reducing the cooling effect. In practical applications, the small evaporation area of ​​existing evaporators causes several problems. Regarding cooling performance, in large refrigeration environments, the evaporator cannot cool the air quickly enough, causing the ambient temperature to rise and affecting refrigeration needs. In terms of energy consumption, to maintain the set temperature, the compressor needs to start and stop frequently and run for extended periods, accelerating wear and increasing energy consumption. Temperature stability is also poor; in refrigeration environments requiring frequent switching on and off, the evaporator struggles to quickly adjust its cooling capacity, resulting in large temperature fluctuations that may damage temperature-sensitive items.

[0004] However, while the industry is currently taking measures such as increasing the length or number of coils to expand the evaporation area, this increases the volume and weight of the evaporator, affecting the installation and operation of the refrigeration unit; some improved designs have increased heat exchange efficiency, but have also significantly increased manufacturing costs. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a refrigeration unit that can increase the heat exchange area of ​​the evaporator, thereby improving the refrigeration effect.

[0006] This utility model also proposes a refrigeration control device and a refrigeration control system.

[0007] According to an embodiment of the first aspect of the present invention, the refrigeration unit includes: An outer casing, wherein the outer casing is provided with an evaporation chamber located on the indoor side, and the outer casing is provided with at least two first air inlet surfaces, each first air inlet surface being provided with an air inlet for connecting the indoor side and the evaporation chamber; and An evaporator unit is disposed in the evaporation chamber. The evaporator unit includes an evaporator located inside the first air inlet surface. The air inlet direction of the first air inlet surface is directed toward the air inlet side of the evaporator to increase the heat exchange area of ​​the evaporator.

[0008] The refrigeration unit according to the embodiments of this utility model has at least the following beneficial effects: the outer casing is provided with at least two first air inlet surfaces, and each first air inlet surface is provided with an air inlet, which introduces indoor air into the evaporation chamber. The evaporator is located inside the first air inlet surfaces, and the air inlet direction of all the first air inlet surfaces is towards the air inlet side of the evaporator. This arrangement allows air to flow to the evaporator from multiple directions simultaneously, greatly increasing the contact area between the air and the evaporator, that is, increasing the heat exchange area of ​​the evaporator. Compared with traditional refrigeration units with only one side air inlet, this utility model enables the evaporator to exchange heat with more air in the same amount of time, thereby accelerating the heat exchange speed and improving the refrigeration efficiency. At the same time, due to the improved heat exchange efficiency, the refrigeration unit of this utility model requires less operating time and consumes less energy to achieve the same refrigeration effect, effectively reducing operating costs and conforming to the development trend of energy conservation and environmental protection.

[0009] According to some embodiments of the present invention, the first air inlet surface is distributed on two or more sides of the outer casing, the evaporator has two or more air inlet sides, and the air inlet sides are arranged in a one-to-one correspondence with the first air inlet surface.

[0010] According to some embodiments of the present invention, the air inlet side of the evaporator is inclined relative to the air inlet side of one of the first air inlet surfaces, so that the air inlet side of the evaporator simultaneously covers multiple first air inlet surfaces.

[0011] According to some embodiments of the present invention, the evaporator unit further includes a blower, the outer casing is provided with a first air outlet surface, the first air outlet surface is provided with an air outlet, the air supply end of the blower is located inside the first air outlet surface, and the air outlet is used to connect the indoor side and the air supply end of the blower.

[0012] According to some embodiments of this utility model, it also includes a condensing unit. The outer casing is provided with a condensing cavity, and the condensing unit is disposed in the condensing cavity. The condensing unit includes a compressor, a four-way valve, and a condenser. The condenser and the compressor are disposed in the condensing cavity. The four-way valve is disposed between the evaporator and the condenser. Two connection ports of the four-way valve are connected to the air inlet and air outlet of the compressor, and the other two connection ports of the four-way valve are connected to one end of the evaporator and one end of the condenser.

[0013] According to some embodiments of the present invention, the outer casing is further provided with a second air inlet surface and a second air outlet surface, the condenser is located between the second air inlet surface and the second air outlet surface, and the second air inlet surface is provided on at least one side of the outer casing.

[0014] According to some embodiments of the present invention, the condensing unit further includes an axial flow fan unit, which is disposed between the condenser and the second air outlet surface.

[0015] According to some embodiments of the present invention, a partition is provided in the outer shell to separate the evaporation chamber and the condensation chamber.

[0016] According to a second aspect of the present invention, the refrigeration control device includes at least one control processor, wherein the at least one control processor is used in the refrigeration unit described in any of the first aspects of the present invention.

[0017] The refrigeration control device according to the embodiments of the present utility model has at least the following beneficial effects: the refrigeration control device has all the beneficial effects brought about by the above-mentioned refrigeration unit, which will not be repeated here.

[0018] According to a third aspect of the present invention, the refrigeration control system includes the refrigeration control device described in the second aspect of the present invention.

[0019] The refrigeration control system according to the embodiments of the present utility model has at least the following beneficial effects: the refrigeration control system has all the beneficial effects brought about by the above-mentioned refrigeration control device, which will not be repeated here.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the main structure of the refrigeration unit according to the first aspect of the present invention; Figure 2 for Figure 1 The diagram shown is a top view of the refrigeration unit. Figure 3 This is a top view of the refrigeration unit according to another embodiment of the present invention; Figure 4 This is a schematic diagram of the refrigeration control system according to a third aspect embodiment of the present invention.

[0022] Icon labels: 1. Liquid storage tank; 2. Electronic expansion valve; 3. Filter; 4. Inner ring temperature sensor; 5. Outer ring temperature sensor; Outer shell 10; Evaporation chamber 11; First air inlet surface 12; First air outlet surface 13; Condensation chamber 14; Second air inlet surface 15; Second air outlet surface 16; Partition plate 17; Evaporator unit 20; Evaporator 21; Air inlet side 211; Blower 22; 30. Condensing unit; 31. Compressor; 32. Four-way valve; 33. Condenser; 34. Axial flow fan unit. Detailed Implementation

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Reference Figures 1 to 3 According to an embodiment of the first aspect of the present invention, the refrigeration unit includes a housing 10 and an evaporator 20. The housing 10 is provided with an evaporation chamber 11 located on the indoor side. The housing 10 is provided with at least two first air inlet surfaces 12, each with an air inlet (not shown in the figure) for connecting the indoor side and the evaporator 11. The evaporator 20 is disposed in the evaporation chamber 11 and includes an evaporator 21 located inside the first air inlet surfaces 12. The air inlet direction of the first air inlet surfaces 12 is directed toward the air inlet side 211 of the evaporator 21 to increase the heat exchange area of ​​the evaporator 21.

[0027] Specifically, in this embodiment, the outer casing 10 of the refrigeration unit is made of a high-strength, heat-insulating metal material to reduce the impact of the external environment on the unit's interior. The outer casing 10 is generally rectangular in shape, and an evaporation chamber 11 is disposed inside it. This evaporation chamber 11 is located on the indoor side and is used to install core components such as the evaporator unit 20. The outer casing 10 can be installed on the wall of the cold storage. The outer casing 10 has two or more first air inlet surfaces 12. The sides of the outer casing 10 can be either curved or rectangular, and each first air inlet surface 12 can be a rectangular plane evenly distributed on the side of the outer casing 10. Multiple air inlets are evenly distributed on the first air inlet surface 12, and the shape of the air inlets can be circular or rectangular, etc. The size of the holes is designed according to actual needs to ensure sufficient airflow. These air inlets introduce indoor air into the evaporation chamber 11, providing a sufficient air source for the evaporator 21.

[0028] The evaporator unit 20 is housed within the evaporation chamber 11 and mainly includes components such as the evaporator 21 and the blower 22. The evaporator 21 employs a copper tube and aluminum fin structure, providing excellent thermal conductivity and corrosion resistance. The evaporator 21 is located inside the first air inlet surface 12, and its installation position is carefully designed so that the airflow direction of all three first air inlet surfaces 12 faces the air inlet side 211 of the evaporator 21. Specifically, the air inlet side 211 of the evaporator 21 is opposite to each of the first air inlet surfaces 12, maintaining a certain distance to ensure smooth airflow to the evaporator 21 and sufficient heat exchange.

[0029] In actual operation, after the refrigeration unit starts, the blower 22 begins to work, and indoor air enters the evaporator chamber 11 through the air inlets of multiple first air inlets 12 on the outer casing 10. Since the air intake direction is all towards the air intake side 211 of the evaporator 21, the air can simultaneously impact the surface of the evaporator 21 from different directions, exchanging heat with the evaporator 21. The refrigerant in the evaporator 21 absorbs heat from the air and evaporates, lowering the air temperature and thus achieving a cooling effect. The cooled air after heat exchange is then discharged into the room through other components of the unit, achieving the purpose of regulating the indoor temperature.

[0030] Through the above structural design, the refrigeration unit of this embodiment achieves multi-directional air intake, effectively increases the heat exchange area of ​​the evaporator 21, improves refrigeration efficiency and energy saving effect, and at the same time ensures the stable operation and long service life of the unit, which has significant economic and social benefits.

[0031] Therefore, it is understood that the refrigeration unit according to the embodiments of this utility model has at least the following beneficial effects: the outer casing 10 is provided with at least two first air inlet surfaces 12, and each first air inlet surface 12 is provided with an air inlet, which introduces indoor air into the evaporation chamber 11. The evaporator 21 is located inside the first air inlet surface 12, and the air inlet direction of all the first air inlet surfaces 12 is towards the air inlet side 211 of the evaporator 21. This arrangement allows air to flow to the evaporator 21 from multiple directions simultaneously, greatly increasing the contact area between the air and the evaporator 21, that is, increasing the heat exchange area of ​​the evaporator 21. Compared with traditional refrigeration units with only one side air inlet, this utility model enables the evaporator 21 to exchange heat with more air in the same amount of time, thereby accelerating the heat exchange speed and improving the refrigeration efficiency. At the same time, due to the improvement in heat exchange efficiency, the refrigeration unit of this utility model requires less operating time and consumes less energy to achieve the same refrigeration effect, effectively reducing the operating cost and conforming to the development trend of energy conservation and environmental protection.

[0032] Furthermore, referring to Figures 1 to 2 In some embodiments of this utility model, the first air inlet surface 12 is distributed on two or more sides of the outer shell 10, and the evaporator 21 has two or more air inlet sides 211, with the air inlet sides 211 and the first air inlet surface 12 being arranged in a one-to-one correspondence.

[0033] In this embodiment, the outer casing 10 of the refrigeration unit is still made of a robust material with excellent thermal insulation properties, and its overall shape is designed as a relatively regular cuboid (as shown in the figure) for easy installation and layout. Three first air inlet surfaces 12 are provided on the outer casing 10, and these three first air inlet surfaces 12 are distributed on three sequentially connected sides of the outer casing 10, specifically the rear side, left side, and right side. This distribution method can fully utilize space in different directions, introducing indoor air from multiple angles. Each first air inlet surface 12 is rectangular, and its area is rationally planned according to the overall size of the unit and the designed air intake volume. Multiple air inlets are evenly opened on the first air inlet surfaces 12 to ensure that air can smoothly and evenly enter the evaporation chamber 11.

[0034] The evaporator 21 employs a high-efficiency copper tube and aluminum fin structure, exhibiting excellent heat transfer performance and durability. The evaporator 21 has three air inlet sides 211, each corresponding to a first air inlet surface 12, resulting in a roughly U-shaped cross-section extending horizontally. Specifically, air introduced by the first air inlet surface 12 on the rear side is directly blown onto the rear air inlet side 211 of the evaporator 21; air introduced by the first air inlet surface 12 on the left side is blown onto the left air inlet side 211; and air introduced by the first air inlet surface 12 on the right side is blown onto the right air inlet side 211. This one-to-one correspondence allows air to flow precisely to each air inlet side 211 of the evaporator 21, maximizing the contact area between the air and the evaporator 21 and significantly improving the heat exchange efficiency of the evaporator 21.

[0035] In actual operation, after the refrigeration unit starts, the blower 22 begins to work, and indoor air enters the evaporator chamber 11 through the air inlets of the first air inlet surfaces 12 on three different sides of the outer casing 10. Due to the one-to-one correspondence between the air inlet surfaces 211 and the first air inlet surfaces 12, the air can flow unobstructed and evenly to each air inlet surface 211 of the evaporator 21, and fully exchange heat with the refrigerant inside the evaporator 21. After absorbing heat from the air, the refrigerant evaporates, lowering the air temperature. The cooled air, after heat exchange, is then discharged into the room through other components of the unit, achieving a highly efficient cooling effect.

[0036] It is also understood that the outer casing 10 may also be provided with two first air inlet surfaces 12, which are distributed on two consecutively connected sides of the outer casing 10 or on two opposite sides. This distribution method can make full use of the space in different directions and introduce indoor air from multiple angles. Each first air inlet surface 12 is rectangular, and its area is reasonably planned according to the overall size of the unit and the designed air intake volume. Multiple air inlets are evenly opened on the first air inlet surface 12 to ensure that air can enter the evaporation chamber 11 smoothly and evenly. Therefore, in this embodiment, the distribution of the first air inlet surface 12 and the air inlet side surface 211 of the evaporator 21 is not specifically limited. Similarly, when the outer casing 10 is in the shape of a polygonal prism, a first air inlet surface 12 can be provided on each side to expand the air intake area, and correspondingly, the evaporator 21 can also be provided with multiple air inlet side surfaces 211 that are arranged in a one-to-one correspondence.

[0037] Reference Figure 3 In some other embodiments of the present invention, the air inlet side 211 of the evaporator 21 is inclined relative to the air inlet side of one of the first air inlet surfaces 12, so that the air inlet side 211 of the evaporator 21 simultaneously covers multiple first air inlet surfaces 12.

[0038] In this embodiment, the outer casing 10 of the refrigeration unit is generally in a relatively regular cuboid or polygonal prism shape to adapt to different installation environments and ensure the stable operation of internal components. When the outer casing 10 is cuboid, it can be provided with two first air inlet surfaces 12, located on the rear and right sides of the casing 10, respectively. Each first air inlet surface 12 is rectangular, and its size is reasonably determined according to the overall specifications of the unit and the designed air intake volume. Multiple circular air inlets are evenly distributed on the first air inlet surfaces 12 to ensure that air can enter the evaporation chamber 11 smoothly and evenly. The air inlet side 211 of the evaporator 21 is inclined at a certain angle relative to the air inlet surface 12 of the rear side, and the inclination angle is determined according to the space of the evaporation chamber 11. Through this inclined arrangement, the air inlet side 211 of the evaporator 21 can simultaneously cover both the rear and right side first air inlet surfaces 12. It is conceivable that when the outer casing 10 is a polygonal prism (not shown in the figure), the outer casing 10 can be provided with three first air inlet surfaces 12, located on the rear side, the right side, and the oblique side between the rear side and the right side (which can be parallel to the air inlet surface 211 of the evaporator 21). At this time, the air inlet surface 211 of the evaporator 21 is inclined at a certain angle relative to the air inlet surface of the first air inlet surface 12 on the rear side. Through this inclined setting, the air inlet surface 211 of the evaporator 21 can simultaneously cover the three first air inlet surfaces 12: the rear side, the right side, and the oblique side between the rear side and the right side.

[0039] In actual operation, after the refrigeration unit starts, the blower 22 begins to work, and indoor air enters the evaporator chamber 11 through the air inlets of two or three first air inlet surfaces 12 on the outer casing 10. Because the air inlet side 211 of the evaporator 21 is inclined and covers multiple first air inlet surfaces 12, air entering from the rear side, right side, and oblique side (not shown in the figure) can simultaneously contact the air inlet side 211 of the evaporator 21 and exchange heat. This design breaks the limitation of traditional evaporators 21 only contacting air from a single direction, greatly increasing the contact area and contact time between air and the evaporator 21, thereby significantly improving the heat exchange efficiency of the evaporator 21.

[0040] Reference Figures 1 to 4 In some embodiments of this utility model, the evaporator unit 20 further includes a blower 22, the outer casing 10 is provided with a first air outlet surface 13, the first air outlet surface 13 is provided with an air outlet, the air supply end of the blower 22 is located inside the first air outlet surface 13, and the air outlet is used to connect the indoor side and the air supply end of the blower 22.

[0041] In this embodiment, the evaporator unit 20 is located inside the evaporation chamber 11. Besides the evaporator 21, it is also equipped with a blower 22. The blower 22 is a centrifugal fan, specifically a volute-less centrifugal fan, which features large air volume and stable air pressure, meeting the air supply requirements of the refrigeration unit under different operating conditions. A first air outlet surface 13 is also provided on the outer casing 10. This first air outlet surface 13 is located on the rear side of the outer casing 10 and has a rectangular structure. Multiple rectangular air outlets are provided on the first air outlet surface 13. The size of the air outlets is designed according to the air volume and velocity requirements to ensure smooth air discharge. The air supply end of the blower 22 is precisely installed inside the first air outlet surface 13, corresponding to the air outlet, so that the air blown by the blower 22 can be directly discharged into the indoor side through the air outlet. During actual operation, after the refrigeration unit starts, indoor air enters the evaporator chamber 11 through the air inlets of the first air inlet surface 12 on the rear, left, and / or right sides of the outer casing 10. The air exchanges heat with the evaporator 21 within the evaporator chamber 11, where the refrigerant absorbs heat from the air, lowering its temperature. After cooling, the air is accelerated and blown towards the air outlet on the inner side of the first air outlet surface 13 by the blower 22, and then discharged into the room through the air outlet on the rear side, thus achieving cooling of the indoor environment.

[0042] Reference Figures 1 to 4 In some embodiments of this utility model, the refrigeration unit further includes a condensing unit 30. The outer casing 10 is provided with a condensing cavity 14, and the condensing unit 30 is disposed in the condensing cavity 14. The condensing unit 30 includes a compressor 31, a four-way valve 32, and a condenser 33. The condenser 33 and the compressor 31 are disposed in the condensing cavity 14. The four-way valve 32 is disposed between the evaporator 21 and the condenser 33. Two connection ports of the four-way valve 32 are connected to the air inlet and air outlet of the compressor 31, and the other two connection ports of the four-way valve 32 are connected to one end of the evaporator 21 and one end of the condenser 33.

[0043] In this embodiment, the interior of the outer casing 10 is divided into two independent spaces: an evaporation chamber 11 and a condensation chamber 14, which are used to install the evaporator unit 20 and the condenser unit 30, respectively. The evaporator chamber 11 is located on the indoor side and its structure is similar to that of the previous embodiment. It is provided with three first air inlet surfaces 12, located on the rear, left, and right sides of the outer casing 10, respectively. Each first air inlet surface 12 is rectangular and has multiple evenly distributed circular air inlets for introducing indoor air into the evaporator chamber 11. The evaporator unit 20 is disposed in the evaporator chamber 11 and includes an evaporator 21. The evaporator 21 adopts a high-efficiency copper tube and aluminum fin structure, which has good heat exchange performance.

[0044] The condenser chamber 14 is located on the outdoor side, and its outer shell 10 is equipped with a heat dissipation grille to enhance heat dissipation. The condenser unit 30 is installed in the condenser chamber 14 and mainly includes a compressor 31, a four-way valve 32, and a condenser 33. The compressor 31 is a high-performance scroll compressor 31, which has the advantages of stable operation, low noise, and high efficiency. The condenser 33 adopts a finned tube structure, which can increase the heat exchange area and improve the heat exchange efficiency. The four-way valve 32 is located between the evaporator 21 and the condenser 33. Its two connection ports are connected to the air inlet and outlet of the compressor 31, respectively, and the other two connection ports are connected to one end of the evaporator 21 and one end of the condenser 33, respectively. The switching of the four-way valve 32 can realize the conversion between cooling and defrosting functions.

[0045] In actual operation, the refrigeration unit has two working modes: refrigeration and defrosting.

[0046] In cooling mode, the refrigerant flow path is as follows: Starting from compressor 31, the refrigerant is compressed into a high-temperature, high-pressure gas, which then enters condenser 33 through four-way valve 32. In condenser 33, the high-temperature, high-pressure gas exchanges heat with the outdoor air, releasing heat and condensing into a high-pressure liquid. The high-pressure liquid then enters receiver 1 for storage and buffering, and is filtered by filter 3 to remove impurities. Next, it passes through electronic expansion valve 2 for throttling and pressure reduction, becoming a low-temperature, low-pressure liquid. This low-temperature, low-pressure liquid enters evaporator 21, absorbs heat from the indoor air, and evaporates into a low-temperature, low-pressure gas. Finally, it returns to compressor 31 through four-way valve 32, completing the refrigeration cycle and thus achieving the cooling function and lowering the indoor temperature.

[0047] When defrosting is required, the four-way valve 32 switches its operating state. At this time, the refrigerant flow path becomes: the refrigerant starts from the compressor 31, is compressed into a high-temperature, high-pressure gas, and directly enters the evaporator 21 through the four-way valve 32. The high-temperature, high-pressure gas releases heat in the evaporator 21, melting the frost on its surface, thus achieving the defrosting function. The melted refrigerant becomes a low-temperature, low-pressure liquid, passing sequentially through the electronic expansion valve 2, filter 3, and liquid receiver 1 before entering the condenser 33. In the condenser 33, it absorbs heat and becomes a low-temperature, low-pressure gas again, returning to the compressor 31 through the four-way valve 32, completing the defrosting flow cycle.

[0048] In this embodiment, hot gas reversal is achieved through a four-way valve 32. Compared to the traditional method of defrosting with electric auxiliary heating, this avoids the high energy consumption problem of electric auxiliary heating defrosting and reduces the safety risks associated with the use of electrical components, thereby improving the safety and energy efficiency of the refrigeration unit. For example, in a cold winter, when the refrigeration unit is used for heating indoors, frost will form on the surface of the evaporator 21 after a period of operation, affecting the heating effect. At this time, switching to defrosting mode via the four-way valve 32 can quickly and effectively remove the frost layer on the surface of the evaporator 21, restoring the heating performance of the refrigeration unit. Moreover, the entire defrosting process has low energy consumption, saving users operating costs.

[0049] Reference Figures 1 to 3 In some embodiments of this utility model, the outer casing 10 is further provided with a second air inlet surface 15 and a second air outlet surface 16, and the condenser 33 is located between the second air inlet surface 15 and the second air outlet surface 16. The second air inlet surface 15 is provided on at least one side of the outer casing 10.

[0050] In this embodiment, the condenser cavity 14 is located on the outdoor side, and the outer shell 10 is specially provided with a second air inlet surface 15 and a second air outlet surface 16. The second air inlet surface 15 is located on two opposite sides of the outer shell 10, as shown in the figure (left and right sides). This design allows outdoor air to be introduced from different directions, increasing the air intake volume. The second air inlet surface 15 is rectangular, with multiple elongated air inlets evenly distributed on it. The length and width of the air inlets are carefully designed to ensure sufficient air intake while preventing foreign objects from entering the condenser cavity 14. The second air outlet surface 16 is located on the other side of the outer shell 10, also rectangular, and also has multiple elongated air outlets distributed on it, used to exhaust the hot air after heat exchange with the condenser 33 to the outside. The condenser 33 adopts a high-efficiency finned tube structure and is placed between the second air inlet surface 15 and the second air outlet surface 16. This layout allows outdoor air entering the condenser cavity 14 from the second air inlet surface 15 to be directly blown onto the condenser 33, allowing for sufficient heat exchange with the high-temperature, high-pressure refrigerant in the condenser 33. After the refrigerant releases heat in the condenser 33, it changes from a gaseous state to a liquid state, while the air that has absorbed the heat is discharged outdoors from the second air outlet 16, thus completing the condensation process of the refrigerant.

[0051] Furthermore, referring to Figures 1 to 3In some embodiments of this utility model, the condenser unit 30 further includes an axial flow fan unit 34, which is disposed between the condenser 33 and the second air outlet surface 16. In this embodiment, the axial flow fan unit 34 in the condenser unit 30 is one of the key components, and it is disposed between the condenser 33 and the second air outlet surface 16. The axial flow fan unit 34 consists of multiple axial flow fan units 34, which have the characteristics of large air volume and stable air pressure. Their blades adopt a special aerodynamic design, which can efficiently push air along the axial direction. In actual operation, when the refrigeration unit is in cooling mode, the compressor 31 delivers high-temperature and high-pressure gaseous refrigerant to the condenser 33. At this time, the axial flow fan unit 34 starts to work. Driven by the motor, the blades of the axial flow fan rotate at high speed, generating a strong suction force, which quickly draws outdoor air into the condenser cavity 14 from the air inlet of the second air inlet surface 15. As the intake air flows through the condenser 33, it undergoes thorough heat exchange with the high-temperature refrigerant on the surface of the condenser 33, absorbing heat from the refrigerant and causing it to condense from a gaseous state into a liquid state. The air temperature rises after absorbing heat, and under the continuous drive of the axial fan unit 34, it is rapidly exhausted outdoors through the air outlet of the second air outlet 16, forming a good air circulation and ensuring airflow and heat dissipation around the condenser 33.

[0052] Reference Figures 1 to 3 In some embodiments of this utility model, a partition 17 is provided in the outer shell 10 to separate the evaporator chamber 11 and the condenser chamber 14. The outer shell 10 is integrally formed. In actual installation, since the evaporator chamber 11 and the condenser chamber 14 of the refrigeration unit are integrated into one outer shell 10, a large hole can be drilled directly in the cold storage panel to install it on the cold storage. Compared with the traditional method of installing the indoor and outdoor units separately, the amount of installation work is greatly reduced. For example, when installing traditional refrigeration equipment, it is necessary to select suitable locations indoors and outdoors to install the indoor and outdoor units separately, and then carry out complex pipe connections and wiring layouts, which not only has a long construction period, but also requires high professional skills from the construction personnel. However, the integrated refrigeration unit of this embodiment only requires drilling a suitable large hole in the cold storage panel, installing the entire unit, and then performing simple fixing and debugging, which greatly shortens the construction time and reduces the installation cost.

[0053] Meanwhile, the integrated design also reduces the length of the refrigerant connecting pipes between the indoor and outdoor units. In traditional refrigeration equipment, the indoor and outdoor units are connected by long refrigerant connecting pipes. The refrigerant experiences significant pressure and heat losses as it flows through these long pipes, negatively impacting the overall performance and energy efficiency. However, in this embodiment, the integrated refrigeration unit, with its closer proximity between the evaporator chamber 11 and the condenser chamber 14, significantly shortens the refrigerant connecting pipe length, effectively reducing pressure and heat losses during refrigerant flow and improving overall performance and energy efficiency.

[0054] Furthermore, the integrated design eliminates the risk of refrigerant leakage caused by the installation of refrigerant connection pipes between the indoor and outdoor units. In traditional refrigeration equipment installation, the refrigerant connection pipe joints require specialized tools and sealing materials for sealing. Improper installation or aging of the sealing materials can easily lead to refrigerant leakage. However, in this integrated refrigeration unit, the refrigerant connection pipes are precisely connected and sealed during factory manufacturing, reducing on-site installation steps and significantly lowering the risk of refrigerant leakage, thus improving the safety and reliability of the refrigeration unit.

[0055] According to a second aspect of the present invention, the refrigeration control device includes at least one control processor, which is used in a refrigeration unit according to any of the first aspects.

[0056] In this embodiment, the refrigeration control device is equipped with at least one control processor. A high-performance microcontroller can be selected, which possesses powerful computing capabilities and a fast response speed, enabling it to accurately process various complex control commands and data. This microcontroller integrates abundant interface resources, facilitating data interaction and communication with other components.

[0057] The refrigeration control unit is connected to the refrigeration unit through a reasonable wiring layout. Taking an integrated refrigeration unit as an example, the refrigeration control unit establishes communication links with various key components of the integrated refrigeration unit. For example, the refrigeration control unit is connected to relevant sensors of the evaporator 21 in the evaporator chamber 11. These sensors include an inner ring temperature sensor 4 and a pressure sensor. The inner ring temperature sensor 4 is used to monitor the temperature of the air around the evaporator 21 in real time, while the pressure sensor is used to detect the pressure of the refrigerant inside the evaporator 21. The sensors transmit the collected temperature and pressure data to the control processor in the form of electrical signals. After receiving this data, the control processor analyzes and processes it according to a preset control algorithm. For example, when the indoor temperature fed back by the inner ring temperature sensor 4 is higher than the set temperature, the control processor will quickly make a judgment and issue a command to control the evaporator unit 20 to increase the cooling power. Specifically, it will adjust the flow rate of the refrigerant in the evaporator 21 by controlling the opening of the electronic expansion valve 2 connected to the evaporator 21. Upon receiving instructions from the control processor, the electronic expansion valve 2 precisely adjusts its opening degree, thereby changing the refrigerant flow rate and enabling the evaporator 21 to absorb heat from the indoor air more quickly, achieving rapid cooling. Simultaneously, the control processor also interacts with the components in the condenser chamber 14. Based on the temperature of the outer ring temperature sensor 5 on the condenser 33, the control processor adjusts the rotation speed of the axial fan unit 34 in real time. When the condenser 33 temperature is high, the control processor increases the rotation speed of the axial fan unit 34, accelerating the flow of outdoor air and enhancing the heat dissipation effect of the condenser 33. The motor in the axial fan unit 34, upon receiving electrical signals of different frequencies from the control processor, correspondingly changes its rotation speed, thereby regulating the airflow.

[0058] The control processor also plays a crucial role in the start-up and shutdown control of the refrigeration unit. When the user issues a command to start the refrigeration unit, the control processor will control the compressor 31, evaporator 20, axial fan unit 34, and other components to start sequentially according to a preset start-up sequence. First, the axial fan unit 34 is started to create a good airflow environment in the condenser chamber 14. Then, the compressor 31 is started to compress the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant, which is then delivered to the condenser 33 for heat dissipation and condensation. Finally, the evaporator 20 is started to achieve the cooling function. When the refrigeration unit stops running, the control processor will shut down each component in reverse order to ensure a safe and smooth shutdown of the equipment.

[0059] According to a third aspect embodiment of the present invention, the refrigeration control system includes the refrigeration control device described in the second aspect embodiment. In this embodiment, the refrigeration control system is based on the refrigeration control device described in the second aspect embodiment. This refrigeration control device is equipped with at least one high-performance control processor, which has powerful computing and data processing capabilities and can accurately execute complex control logic for the refrigeration unit.

[0060] The refrigeration control system is also closely connected to the refrigeration unit described in the first aspect embodiment. Taking an integrated refrigeration unit as an example, various sensors are installed in the evaporator chamber 11 and the condenser chamber 14 of the refrigeration unit. In the evaporator chamber 11, temperature and humidity sensors are arranged in a reasonable manner. The temperature sensor can accurately measure the temperature of the indoor air in real time, while the humidity sensor can accurately sense the humidity of the indoor air. These sensors continuously collect environmental data and transmit the data to the control processor in the refrigeration control device in the form of electrical signals.

[0061] After receiving this data, the control processor analyzes and processes it according to the preset control algorithm and user-defined parameters. It adjusts the opening of the electronic expansion valve 2 in the evaporator unit 20, increasing the refrigerant flow into the evaporator 21, allowing the evaporator 21 to absorb heat from the indoor air more quickly, thus achieving rapid cooling. Simultaneously, if the humidity sensor detects excessively high indoor humidity, the control processor can also control the refrigeration unit to perform appropriate dehumidification, adjusting the operating parameters of the refrigeration system to bring the indoor humidity to a comfortable range. Regarding the condenser chamber 14, pressure and temperature sensors monitor the refrigerant pressure and temperature inside the condenser 33 in real time. When the pressure sensor detects excessively high refrigerant pressure, the control processor promptly adjusts the speed of the axial fan unit 34. By changing the frequency of the electrical signal supplied to the motor of the axial fan unit 34, the control processor increases the motor speed, thereby increasing the exhaust volume, accelerating the airflow around the condenser 33, enhancing heat dissipation, and reducing refrigerant pressure. Conversely, when the refrigerant pressure is too low, the control processor appropriately reduces the speed of the axial fan unit 34 to save energy.

[0062] The refrigeration control system also features a human-machine interface (HMI) connected to the refrigeration control unit. Users can easily set the refrigeration unit's operating parameters, such as target temperature, target humidity, and operating mode (cooling mode, heating mode, defrosting mode, etc.), through the HMI. Simultaneously, the HMI can display real-time operating status information of the refrigeration unit, such as current indoor and outdoor temperature and humidity, compressor 31 operating status, and axial fan unit 34 speed, allowing users to monitor the refrigeration system's operation at any time.

[0063] In addition, the refrigeration control system also features remote monitoring and control capabilities. By connecting to a network communication module, the refrigeration control unit can upload the refrigeration unit's operating data to a cloud server or the user's mobile terminal. Regardless of their location, users can remotely view the refrigeration unit's operating status and perform remote control operations as needed, simply by logging into the corresponding application on a mobile device such as a smartphone or tablet. For example, if a user forgets to turn off the refrigeration unit when leaving, they can remotely send a shutdown command via their mobile device. Upon receiving the command, the control processor will sequentially shut down each component of the refrigeration unit according to a preset shutdown procedure, achieving remote intelligent management.

[0064] This refrigeration control system, through the coordinated operation of the refrigeration control device and the refrigeration unit, as well as the realization of human-machine interaction and remote monitoring functions, can provide users with efficient, convenient and intelligent refrigeration solutions to meet the refrigeration needs in different scenarios, while ensuring the safe and stable operation of the refrigeration unit.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A refrigeration unit, characterized in that, include: An outer casing, wherein the outer casing is provided with an evaporation chamber located on the indoor side, and the outer casing is provided with at least two first air inlet surfaces, each first air inlet surface being provided with an air inlet for connecting the indoor side and the evaporation chamber; and An evaporator unit is disposed in the evaporation chamber. The evaporator unit includes an evaporator located inside the first air inlet surface. The air inlet direction of the first air inlet surface is directed toward the air inlet side of the evaporator to increase the heat exchange area of ​​the evaporator.

2. A refrigeration unit according to claim 1, characterized in that, The first air inlet surface is distributed on two or more sides of the outer casing. The evaporator has two or more air inlet sides, and the air inlet sides are arranged in a one-to-one correspondence with the first air inlet surface.

3. A refrigeration unit according to claim 1, characterized in that, The air inlet side of the evaporator is inclined relative to one of the first air inlet surfaces, so that the air inlet side of the evaporator simultaneously covers multiple first air inlet surfaces.

4. A refrigeration unit according to claim 1, characterized in that, The evaporator unit also includes a blower. The outer casing is provided with a first air outlet surface, and the first air outlet surface is provided with an air outlet. The air supply end of the blower is located inside the first air outlet surface, and the air outlet is used to connect the indoor side and the air supply end of the blower.

5. A refrigeration unit according to claim 1, characterized in that, It also includes a condensing unit, the outer casing of which is provided with a condensing cavity, the condensing unit being disposed in the condensing cavity, the condensing unit including a compressor, a four-way valve and a condenser, the condenser and the compressor being disposed in the condensing cavity, the four-way valve being disposed between the evaporator and the condenser, two connection ports of the four-way valve connecting to the air inlet and air outlet of the compressor, and the other two connection ports of the four-way valve connecting one end of the evaporator and one end of the condenser.

6. A refrigeration unit according to claim 5, characterized in that, The outer casing is further provided with a second air inlet surface and a second air outlet surface, and the condenser is located between the second air inlet surface and the second air outlet surface. The second air inlet surface is provided on at least one side of the outer casing.

7. A refrigeration unit according to claim 6, characterized in that, The condenser unit also includes an axial flow fan unit, which is disposed between the condenser and the second air outlet surface.

8. A refrigeration unit according to claim 5, characterized in that, The outer casing is provided with a partition to separate the evaporation chamber and the condensation chamber.

9. A refrigeration control device, characterized in that, The refrigeration control device includes at least one control processor, the at least one control processor being used in a refrigeration unit as described in any one of claims 1 to 8.

10. A refrigeration control system, characterized in that, The refrigeration control system includes the refrigeration control device as described in claim 9.

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