Refrigerating system capable of adjusting refrigerating capacity

Abstract

The utility model discloses a refrigerating system capable of adjusting refrigerating capacity, which comprises a refrigerating unit, and a thermal load reduction component is fixedly connected to the right side wall of the refrigerating unit. The refrigerating unit comprises a bottom plate and a condenser fixedly connected to the front side of the upper surface of the bottom plate. By means of the refrigerating circuit design that the inverter compressor and the capillary copper pipe are connected with all components, cooling fans at the two ends of the condenser and the evaporator are matched, the refrigerating capacity and the fan rotating speed can be dynamically adjusted according to the environment thermal load, and balance of energy consumption and refrigerating efficiency is achieved. In the heat load reducing assembly, an atomizing nozzle converts cooling water into micron-sized water mist to be sprayed to the rear side of an evaporator, the waste heat of equipment is rapidly absorbed through latent heat of vaporization of the water mist, the operation load of the evaporator is remarkably reduced, a water tank liquid level sensor is matched with a water inlet port electromagnetic valve to achieve automatic water supplementing, and the continuous operation stability of the system is guaranteed. The overall structure is high in integration level, modular design is convenient to maintain, and the requirements for efficient refrigeration, energy conservation and consumption reduction are met.

Description

A refrigeration system with adjustable cooling capacity Technical Field

[0001] This utility model relates to the field of variable frequency refrigeration unit technology, and specifically to a refrigeration system with adjustable cooling capacity. Background Technology

[0002] A refrigeration system mainly consists of four core components: a compressor, a condenser, an expansion valve, and an evaporator. In traditional fixed-frequency refrigeration equipment, the compressor operates at a fixed speed, resulting in a constant cooling capacity that cannot be flexibly adjusted according to actual needs. Variable-frequency refrigeration systems, on the other hand, introduce a key component: a frequency converter. By changing the power supply frequency, the compressor speed is adjusted, thereby dynamically regulating the cooling capacity. However, currently available refrigeration units with adjustable cooling capacity primarily rely on passive air convection for condenser and evaporator heat dissipation. In high-temperature or poorly ventilated environments, heat exchange efficiency significantly decreases with increasing air humidity and duct resistance, leading to a substantial reduction in cooling capacity. Therefore, this paper proposes a refrigeration system with adjustable cooling capacity. Summary of the Invention

[0003] The purpose of this utility model is to provide a technical solution for a refrigeration system with adjustable cooling capacity, thereby addressing the shortcomings mentioned in the background art. To overcome the drawbacks and defects described in the background art, this technical solution includes the following:

[0004] It includes a refrigeration unit, and a heat load reduction component is fixedly connected to the right side wall of the refrigeration unit;

[0005] The refrigeration unit includes a base plate, a condenser fixedly connected to the front side of the upper surface of the base plate, and an evaporator fixedly connected to the rear side of the upper surface of the base plate. A variable frequency compressor and an oil separator are fixedly installed in the middle section of the upper surface of the base plate. The variable frequency compressor, evaporator, oil separator and condenser are all connected by capillary copper tubes.

[0006] The heat load reduction component includes a square frame fixed to the rear end face of the evaporator, a water tank fixed to the right side of the square frame, and a water pump fixed to the rear side of the water tank. The pump's suction end is connected to a suction pipe that enters the water tank, and the pump's discharge end is connected to a main pipe. The end of the main pipe is connected to 4-6 branch pipes, and each branch pipe has 6-10 atomizing nozzles installed on its front end face.

[0007] As a preferred embodiment of this utility model: the front end face of the square frame is fixedly connected to the rear end face of the evaporator, and the bottom surface of the square frame is connected to a guide port. The square frame is used to gather the water mist sprayed by the atomizing nozzle.

[0008] As a preferred embodiment of this utility model: the water tank is provided with a water inlet port on the front side and a water outlet port on the rear side.

[0009] As a preferred embodiment of this utility model, a liquid level sensor is installed in the inner cavity of the water tank.

[0010] As a preferred embodiment of this utility model: the end of the water pump that is away from the water pump is connected to the outlet nozzle via a connector.

[0011] As a preferred embodiment of this utility model: the end of the main pipe away from the water pump is connected to the branch pipe through a connector, and the front end face of the branch pipe is provided with multiple nozzles that are connected and installed with the atomizing nozzle.

[0012] As a preferred embodiment of this utility model, a cooling fan is installed on both the rear end face of the condenser and the front end face of the evaporator.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] The refrigeration circuit design, which connects the variable frequency compressor and capillary copper tubes to various components, along with the cooling fans at both ends of the condenser and evaporator, allows for dynamic adjustment of the cooling capacity and fan speed based on the ambient heat load, achieving a balance between energy consumption and refrigeration efficiency. In the heat load reduction component, the atomizing nozzle converts cooling water into micron-level water mist and sprays it onto the back of the evaporator. The latent heat of vaporization of the water mist is used to quickly absorb the waste heat of the equipment, significantly reducing the operating load of the evaporator. The water tank level sensor, in conjunction with the inlet solenoid valve, enables automatic water replenishment, ensuring the continuous and stable operation of the system. The overall structure has a high degree of integration and modular design, facilitating maintenance and taking into account both high-efficiency refrigeration and energy-saving requirements. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 is a schematic diagram of the overall structure of the refrigeration unit;

[0017] Figure 2 is a schematic diagram of the refrigeration unit;

[0018] Figure 3 is a schematic diagram of the heat load reduction component;

[0019] Figure 4 is a schematic diagram of an array-type nozzle assembly.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Refrigeration unit; 11. Base plate; 12. Variable frequency compressor; 13. Evaporator; 14. Oil separator; 15. Capillary copper tube; 16. Condenser; 2. Heat load reduction component; 21. Square frame; 22. Water tank; 23. Water inlet port; 24. Water outlet nozzle; 25. Water pump; 26. Main pipe; 27. Branch pipe; 28. Atomizing nozzle; 29. ​​Pumping pipe. Detailed Implementation

[0022] To provide a clearer explanation and description of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below.

[0023] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of each embodiment. Specific details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures. The disclosures of various publications, patents, and published patent specifications cited herein are incorporated herein by reference in their entirety. The technical solutions of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0024] Example 1: In the refrigeration unit 1, the base plate 11 serves as the main load-bearing structure. The condenser 16 is bolted to the front of its upper surface, and the evaporator 13 is fixed to the rear. A variable frequency compressor 12 and an oil separator 14 are sequentially installed in the middle section. All components are connected by capillary copper tubes 15 to form a closed refrigeration cycle. In the heat load reduction component 2, a square frame 21 is welded to the rear end face of the evaporator 13, with a guide port at its bottom to recover water mist. The water tank 22 is fixed to the right side of the square frame 21 by a bracket. A water inlet port 23 is provided at the front for water replenishment, and a water outlet nozzle 24 is provided at the rear, connected to a suction pipe 29. A water pump 25 is installed at the rear of the water tank 22. Its suction end is connected to the water outlet nozzle 24 via the suction pipe 29, and its discharge end is connected to a main pipe 26. Five branch pipes 27 are connected to the end of the main pipe 26. Eight atomizing nozzles 28 are installed at the front end of each branch pipe 27, and the nozzles are evenly distributed in the area behind the evaporator 13. Cooling fans are installed at the rear end of the condenser 16 and the front end of the evaporator 13, respectively. During operation, the cooling capacity is adjusted by the variable frequency compressor 12. At the same time, the water pump 25 pressurizes the water in the water tank 22 and delivers it to the atomizing nozzle 28 to form water mist and reduce the heat load.

[0025] Example 2: Based on Example 1, a liquid level sensor is added to the inner cavity of the water tank 22. The sensor is connected to the control module via a signal line. When the liquid level is lower than a preset threshold, the control module triggers an alarm and stops the water pump 25, while simultaneously opening the solenoid valve at the water inlet port 23 to automatically replenish water. The rest of the structure remains unchanged: the square frame 21 is still fixed to the rear end of the evaporator 13 by welding, and the guide port collects water mist to the water tank 22; the main pipe 26 is branched into four branch pipes 27, each branch pipe 27 having six atomizing nozzles 28 at its front end, forming a uniform water mist layer covering the rear side of the evaporator 13. The cooling fans of the condenser 16 and the evaporator 13 have their speed controlled by a frequency converter, and the air volume is dynamically adjusted according to the ambient temperature and heat load to achieve a balance between cooling capacity and energy consumption.

[0026] Example 3: This example optimizes the heat load reduction component 2 for high-power cooling requirements. The square frame 21 is detachably bolted to the rear end of the evaporator 13 for easy maintenance. The water tank 22 has an increased capacity and is connected to an external water source via the inlet port 23. The outlet nozzle 24 is connected to the pumping pipe 29 via a quick connector. The water pump 25 uses a high-pressure pump body, with its main pipe 26 branching into 6 branch pipes 27. Each branch pipe 27 has 10 atomizing nozzles 28 installed at its front end, with the nozzle spacing increased to enhance the water mist coverage density. In the refrigeration unit 1, the variable frequency compressor 12 is upgraded to a two-stage compression structure, and the oil separator 14 is equipped with a bypass pipeline, which switches between different cooling capacity levels via a solenoid valve. The cooling fan adopts a combination design of axial and centrifugal types. An axial fan is installed at the rear end of the condenser 16 to enhance convection, and a centrifugal fan is installed at the front end of the evaporator 13 to increase the air supply pressure.

[0027] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows: When the system starts, the variable frequency compressor 12 of the refrigeration unit 1 runs first. It automatically adjusts its speed according to the set temperature and the current environmental heat load requirements. Low-temperature, low-pressure refrigerant gas enters the compressor cavity through the suction pipe and is compressed into high-temperature, high-pressure gas. It is then transported to the oil separator 14 through the capillary copper tube 15. Inside the oil separator 14, the lubricating oil mixed with the refrigerant undergoes gas-liquid separation through centrifugal force and gravity settling. The separated lubricating oil returns to the compressor lubrication system through the oil return pipeline, while the high-temperature, high-pressure refrigerant gas... The refrigerant enters the condenser 16 through the capillary copper tube 15. At the same time, the cooling fan at the rear end of the condenser 16 starts synchronously, transferring the heat carried by the refrigerant to the external environment through forced convection, causing the refrigerant to condense into a high-pressure, medium-temperature liquid. This liquid continues to flow along the capillary copper tube 15 to the evaporator 13. The cooling fan at the front end of the evaporator 13 draws in hot indoor air and blows it across the surface of the evaporator 13. The refrigerant absorbs heat from the air in the evaporator 13 and vaporizes into a low-temperature, low-pressure gas, which then returns to the variable frequency compressor 12 through the capillary copper tube 15 to complete the cycle. Meanwhile, the water tank 22 of the heat load reduction component 2 preheats through the water inlet port 23. First, the tank is filled with cooling water. Water pump 25 draws cooling water from the outlet 24 at the rear of the water tank 22 via the suction pipe 29. After being pressurized by water pump 25, the cooling water enters the main pipe 26. The main pipe 26 distributes the water flow to 4-6 branch pipes 27. Each branch pipe 27 has 6-10 atomizing nozzles 28 at its front end that atomize the cooling water into micron-sized droplets. The resulting water mist is sprayed onto the rear area of ​​the evaporator 13. Upon contact with the hot air on the surface of the evaporator 13, the atomized water droplets rapidly vaporize, absorbing a large amount of heat through latent heat of phase change, thus reducing the operating load on the evaporator 13. The incompletely vaporized water mist gathers within the square frame 21 and is then guided through the bottom... The outflow returns to the water tank 22 for recycling; when the water level sensor in the water tank 22 detects that the water level is lower than the set threshold, the system automatically shuts off the water pump 25 and triggers the solenoid valve of the water inlet port 23 to open and replenish water until the water level returns to a safe range; during continuous operation, the cooling fan at the rear end of the condenser 16 runs continuously to discharge condensation heat, while the cooling fan at the front end of the evaporator 13 adjusts the fan speed according to changes in indoor temperature, and the variable frequency compressor 12 adjusts the output power in real time according to the heat load. At the same time, the water pump 25 and the atomizing nozzle 28 work together to control the amount of water mist sprayed and the heat exchange efficiency of the evaporator 13 surface.

[0028] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A refrigeration system with adjustable cooling capacity, comprising a refrigeration unit (1), characterized in that: A heat load reduction component (2) is fixedly connected to the right side wall of the refrigeration unit (1); the refrigeration unit (1) includes a base plate (11), a condenser (16) fixedly connected to the front side of the upper surface of the base plate (11), and an evaporator (13) fixedly connected to the rear side of the upper surface of the base plate (11), and a variable frequency compressor (12) and an oil separator (14) are fixedly connected to the middle section of the upper surface of the base plate (11), wherein the variable frequency compressor (12), evaporator (13), oil separator (14) and condenser (16) are all connected through capillary copper tubes (15). Connection; The heat load reduction component (2) includes a square frame (21) fixed to the rear end face of the evaporator (13), a water tank (22) fixed to the right side of the square frame (21), and a water pump (25) fixed to the rear side of the water tank (22). The pump (25) has a pump pipe (29) connected to the pumping end to enter the water tank (22), and a main pipe (26) connected to the pump (25). The main pipe (26) has 4-6 branch pipes (27) connected to the end of the main pipe (26). Each branch pipe (27) has 6-10 atomizing nozzles (28) installed on the front end face.

2. The refrigeration system with adjustable cooling capacity according to claim 1, characterized in that: The front end face of the square frame (21) is fixedly connected to the rear end face of the evaporator (13), and the bottom surface of the square frame (21) is connected to a guide port. The square frame (21) is used to gather the water mist sprayed by the atomizing nozzle (28).

3. The refrigeration system with adjustable cooling capacity according to claim 1, characterized in that: The water tank (22) has an inlet port (23) on the front side and an outlet port (24) on the rear side.

4. A refrigeration system with adjustable cooling capacity according to claim 1, characterized in that: A liquid level sensor is installed in the inner cavity of the water tank (22).

5. A refrigeration system with adjustable cooling capacity according to claim 1, characterized in that: The end of the pump pipe (29) away from the water pump (25) is connected to the nozzle of the outlet nozzle (24) via a connector.

6. A refrigeration system with adjustable cooling capacity according to claim 1, characterized in that: The end of the main pipe (26) away from the water pump (25) is connected to the branch pipe (27) through a connector, and the front end face of the branch pipe (27) is provided with multiple nozzles that are connected to the atomizing nozzle (28).

7. A refrigeration system with adjustable cooling capacity according to claim 1, characterized in that: Cooling fans are installed on the rear end face of the condenser (16) and the front end face of the evaporator (13).

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