Air conditioning and refrigeration apparatus

Abstract

The application discloses a kind of air conditioner refrigeration equipment, it is related to refrigeration technical field.The present vertical compact refrigeration equipment exists condensate splashing and streaming and the problems such as the fatigue fracture of pipeline caused by compressor vibration, the equipment mainly includes vertical multi-cavity frame, heat exchanger system, compression cycle system and pipeline system.Heat exchanger system is vertically arrayed in two layers, including condenser, evaporator and evaporator sump transversely arranged between the two, corrugated bottom plate is laid in sump, for receiving and directional flow condensate, completely block water spray downward splashing.In addition, the bottom of compressor is supported and connected with pure mechanical floating base, and is flexibly suspended by a plurality of linearly arranged damping spring groups.The application physically isolates the fluid crosstalk of heat exchange space, greatly attenuates mechanical vibration, effectively avoids pipeline stress concentration, and significantly improves the overall operation life of equipment.

Description

Technical Field

[0001] This invention relates to the field of refrigeration technology, and in particular to an air conditioning refrigeration device. Background Technology

[0002] Air conditioning and refrigeration equipment plays a crucial role in specialized industrial manufacturing, enclosed machine rooms, and localized heat dissipation for large mechanical equipment. In these applications, due to the limited installation space, refrigeration equipment often cannot adopt the traditional separate or large-area flat design, but must pursue the ultimate space utilization. Therefore, compact equipment that highly integrates the condenser, evaporator, compressor, and complex piping and valve system into a vertical metal frame has emerged. This type of equipment is characterized by a high-density mechanical layout with dense piping and stacked layers, in order to achieve stable operation of refrigerant circulation and heat exchange with minimal physical footprint.

[0003] To address the structural integration challenges of high-density layouts, existing technologies include purely physical spatial arrangement designs. In some existing refrigeration equipment, the integrated frame structure divides the rack into different areas, and core components such as compressors, condensers, and evaporators are fixed inside the rack using bolts and supports. This solution primarily relies on profile beams to support heavy refrigeration components, with a standard drip tray at the bottom for collecting dripping water. Simultaneously, the connecting copper pipes between components follow the frame's orientation, rigidly anchored to the skeleton via foundation clamps or welding.

[0004] However, the aforementioned existing technologies reveal significant mechanical and fluid management deficiencies when faced with high-density vertical stacked layouts. First, in the stacked heat exchanger architecture, the large amount of condensate generated on the surface of the upper heat exchange components during operation lacks effective physical isolation and anti-splash guiding design. This makes it highly susceptible to splashing under fan negative pressure or equipment micro-vibration, directly dripping onto the lower heat exchangers or core valves, causing "water crossflow" and accelerating corrosion of metal components. Second, for narrow and tall vertical frames, the continuous mechanical vibration generated by heavy-duty compressors during operation, due to the lack of multi-dimensional suspension damping modules and linked stress relief mechanisms, will be directly transmitted to the entire frame through the rigid base, causing equipment resonance. This long-term mechanical fatigue stress has nowhere to be released, which can easily lead to fatigue fracture of the rigidly fixed dense copper pipes at welds or bend roots, causing irreversible physical damage and refrigerant leakage. Summary of the Invention

[0005] Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an air conditioning refrigeration device that aims to solve the technical problems of existing vertical compact refrigeration devices, such as the physical splashing and crossflow of condensate in high-density stacked layouts that easily damages the lower heat exchange components, and the lack of multi-dimensional mechanical vibration damping that causes fatigue stress concentration in pipelines and frame resonance due to the vibration of heavy compressors.

[0006] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: An air conditioning refrigeration device, comprising: The frame has a vertical, multi-cavity structure; The heat exchanger system is fixedly installed in a cavity on one side of the frame. The heat exchanger system is arranged in a vertical array of two layers, including a condenser in the upper layer, an evaporator in the lower layer, and an evaporator water collection tank horizontally placed between the bottom of the condenser and the top of the evaporator. A compression circulation system is installed in the cavity on the other side of the frame. The compression circulation system includes a compressor, and the bottom of the compressor is supported by a purely mechanical floating base to physically isolate high-frequency vibration. The piping system connects the heat exchanger system and the compression circulation system through physical pipes and mechanical valves, forming a closed fluid circulation loop.

[0007] Preferably, the edge of the evaporator water collection tank is fixedly connected to the crossbeam in the middle of the frame; the evaporator water collection tank includes a rectangular outer frame edge and a corrugated bottom plate laid inside the outer frame edge, the corrugated bottom plate is used to physically receive and guide the condensate dripping from the condenser to prevent it from splashing onto the evaporator below.

[0008] Preferably, the floating base is disposed on the load-bearing horizontal plate in the middle of the frame; the floating base includes a shelf rigidly attached to the horizontal plate, multiple sets of damping springs linearly and uniformly arranged above the shelf, and a support seat fixed to the top of the damping spring sets; the compressor is directly bolted to the top surface of the support seat through a compressor bracket.

[0009] Preferably, the compression circulation system further includes a liquid storage tank and a circulation pump; the liquid storage tank is vertically mounted in the form of a column on the bottom plate of the frame and located directly below the compressor; the circulation pump is horizontally mounted on the bottom plate on one side of the liquid storage tank.

[0010] As a further supplement to the technical solution of the present invention, two or more sight glasses are embedded at intervals along the vertical direction on the outer cylindrical surface of the liquid storage tank for physical and intuitive observation of the liquid level of the refrigerant in the tank.

[0011] Preferably, the heat exchanger system further includes plate heat exchangers; at least two plate heat exchangers are provided, vertically suspended on the column profile in the middle of the frame, and located in the narrow cavity between the compressor and the condenser.

[0012] Preferably, the piping system includes piping assemblies distributed within the frame, and ball valves, expansion valves, dryer filters, and couplings installed in series on the piping assemblies; the dryer filter is vertically installed on the piping assembly on the side of the compressor, and the expansion valve is located on the piping assembly entering the front end of the plate heat exchanger.

[0013] Preferably, it also includes an electrical control system, which is integrally sealed and integrated into a cuboid control box. The control box is fixedly installed on the top outer wall of the frame on the side away from the heat exchanger system by a mechanical mounting plate, and is connected to the internal actuators of the equipment through external wiring.

[0014] Compared with the prior art, the beneficial effects of the present invention are: To address the fluid crosstalk and corrosion issues that easily arise in existing equipment with high-density stacked architectures, this application adds an evaporator water collection tank with a corrugated base plate between the upper and lower stacked condensers and evaporators. This centrally located water collection mechanism utilizes a thickened outer frame to construct a robust physical isolation layer, completely preventing direct opening between the upper and lower heat exchange spaces. Simultaneously, its internal corrugated base plate precisely collects condensate dripping from the upper condenser and uses physical corrugated grooves for forced directional flow guidance, effectively overcoming water splashing caused by negative pressure suction from the fan or equipment micro-vibrations. This purely physical flow guidance and interception structure fundamentally eliminates the potential for "water crosstalk" caused by condensate dripping down to the lower evaporator or densely packed valve components, preventing accelerated corrosion of the lower metal components due to long-term moisture exposure, and significantly improving the service life of the lower heat exchange system under harsh operating conditions.

[0015] To address the risks of resonance and pipe breakage associated with narrow and tall vertical compressor racks, this application utilizes a base structure with bottom shelves and multiple linearly arranged damping springs to flexibly suspend and physically isolate the compressor from the load-bearing crossbar of the frame. During operation, the springs adaptively absorb and significantly attenuate the intense, high-frequency mechanical vibrations generated by the compressor, directly cutting off the physical path of low-frequency and high-frequency vibration waves transmitted to the main frame of the equipment, thus completely solving the technical problem of vertical racks being prone to resonance. This physical vibration damping and stress absorption mechanism provides ample mechanical stress buffer margin for the densely distributed rigid copper pipes, effectively preventing fatigue fractures at weld seams or bend roots due to long-term stress concentration, ensuring the ultimate sealing performance of the entire closed-loop piping system, and eliminating the fatal failure of refrigerant leakage at its source. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a front perspective view of the present invention; Figure 2 This is a rear perspective view of the present invention; Figure 3 This is a front perspective view of the piping system of the present invention; Figure 4 This is a rear perspective view of the piping system of the present invention; Figure 5 This is a front view of the piping system of the present invention; Figure 6 This is a front view of the present invention; Figure 7 This is a structural diagram of the evaporator water collection tank of the present invention; Figure 8 This is a cross-sectional view of the shelf structure of the present invention.

[0017] Reference numerals: 1. Heat exchanger system; 11. Condenser; 12. Evaporator; 13. Evaporator water collection tank; 14. Plate heat exchanger; 2. Compression circulation system; 21. Compressor; 22. Compressor bracket; 23. Liquid receiver; 24. Circulation pump; 25. Sight glass; 3. Piping system; 31. Piping assembly; 32. Ball valve; 33. Expansion valve; 34. Dryer filter; 35. Coupling; 4. Electrical control system; 5. Frame; 6. Floating base; 61. Shelf; 62. Damping spring assembly; 63. Bearing seat. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example 1:

[0019] Please see Figures 1-7 This invention provides a technical solution: an air conditioning refrigeration device, including a frame 5 with a vertical multi-cavity structure; due to the limited installation space in industrial sites or enclosed machine rooms, the frame 5 is welded from high-strength metal square tubes, and is physically divided into two main cavities on the left and right by the load-bearing columns and horizontal plates in the middle; wherein, the heat exchanger system 1 is centrally installed in one cavity, and the compression circulation system 2 is centrally arranged in the other cavity; through this physically isolated partition design, not only is the spatial integration improved, but large-scale heat crosstalk between different systems is also effectively avoided.

[0020] In detail, the heat exchanger system 1 is arranged in a vertical array of two layers on one side of the frame 5; a condenser 11 for dissipating heat is installed at the top, and an evaporator 12 located directly below the condenser 11 is installed at the bottom; an evaporator water collection tank 13 is horizontally placed between the bottom of the condenser 11 and the top of the evaporator 12; the edge of the evaporator water collection tank 13 is directly fixed to the crossbeam in the middle of the frame 5 by bolts, forming a physical partition.

[0021] Combination Figure 7 As shown, in order to address the problem of condensate splashing caused by the high-density stacked layout, the evaporator water collection tank 13 adopts a special flow guiding structure, which is mainly composed of a rectangular outer frame edge 131 and a corrugated base plate 132 laid inside the outer frame edge 131. The thickened outer frame edge 131 can enhance the torsional rigidity of the middle of the entire frame 5. The corrugated base plate 132 uses its physically undulating groove cross section to accurately receive the condensate dripping from the fins of the condenser 11. When the water droplets fall into the corrugated groove, they will be forced to converge and flow in a directional direction along the physical slope to the main drain outlet. Thus, by using the mechanical labyrinth-like blocking effect, the water splashing caused by the negative pressure suction generated when the fan starts or the micro-vibration of the equipment as a whole is completely overcome, preventing the condensate from "crossing over" and dripping onto the evaporator 12 below.

[0022] To establish a closed-loop heat exchange circuit, a dense piping system 3 is arranged between the heat exchanger system 1 and the compression circulation system 2. The piping system 3 includes a pipe assembly 31 that runs along the inner wall of the frame 5, and ball valves 32, expansion valves 33, dryer filters 34 and couplings 35 that are installed in series at each node of the pipe assembly 31. The pipe assembly 31 is mostly made of hard copper pipes and is anchored to the frame 5 by mechanical welding and special pipe clamps to form a stable fluid transport channel. Example 2:

[0023] Based on the basic structure of Example 1, please refer to Figure 3 , Figure 4 and Figure 8 This embodiment further discloses a deep protection design for mechanical vibration and fatigue stress inside the compression cycle system 2.

[0024] The core power source of the compression cycle system 2 is the compressor 21. Since the compressor 21 will generate severe mechanical vibration when it is running, if it is directly and rigidly fixed to the frame, it is very easy to cause the frame 5 to resonate and the pipeline assembly 31 to break. Therefore, a purely mechanical floating base 6 is innovatively connected to the bottom support of the compressor 21.

[0025] Specifically, the floating base 6 is stably mounted on the load-bearing horizontal plate in the middle of the frame 5. The floating base 6 includes, from bottom to top: a shelf 61 rigidly attached to the horizontal plate, multiple sets of damping springs 62 linearly and evenly arranged in the groove above the shelf 61, and a bearing seat 63 directly pressed and supported on the top of the damping springs 62. The compressor 21 is directly fastened to the top surface of the bearing seat 63 by high-strength bolts through the compressor bracket 22 at its bottom. This multi-dimensional mechanical suspension structure allows the damping springs 62 to absorb and significantly attenuate vibration energy through their own physical elastic deformation when the compressor 21 experiences starting torque impact or high-frequency operation vibration, thus cutting off the path of mechanical fatigue stress to the weld of the pipeline assembly 31.

[0026] In addition, the compression cycle system 2 also includes a liquid storage tank 23 and a circulation pump 24; the liquid storage tank 23 is vertically mounted in the form of a column on the bottom plate of the frame 5, and is located in the empty space directly below the compressor 21; the circulation pump 24 is horizontally mounted on the bottom plate on one side of the liquid storage tank 23; two or more sight glasses 25 are embedded at intervals along the vertical direction on the outer cylindrical surface of the liquid storage tank 23; the sight glasses 25 use transparent glass windows to allow maintenance personnel to physically and intuitively observe the liquid level of the refrigerant in the tank and the gas-liquid mixing state, without relying on any electronic liquid level sensor.

[0027] To further improve the heat exchange efficiency of the system, the heat exchanger system 1 is also equipped with at least two plate heat exchangers 14. These plate heat exchangers 14 are vertically suspended on the column profile in the middle of the frame 5 and cleverly placed in the narrow cavity between the compressor 21 and the condenser 11. The dryer filter 34 is vertically installed on the pipe assembly 31 near the side of the compressor 21 to physically remove impurities and moisture from the circulating fluid. The expansion valve 33 is set at the pipe assembly 31 at the front end of the plate heat exchanger 14 and uses the principle of fluid cross-section change to achieve throttling and pressure reduction. The electrical control system 4 is fully sealed and integrated in a cuboid control box. The control box is fixedly installed on the top outer wall of the frame 5 away from the heat exchanger system 1 by a mechanical mounting plate and centrally manages the power supply and mechanical relays.

[0028] Working principle: After the equipment is started, the electrical control system 4 drives the compressor 21 to do work; the gaseous refrigerant is drawn into the compressor 21 and compressed into a high-temperature and high-pressure gas, and then pumped to the top condenser 11 through the pipeline group 31; in the condenser 11, the refrigerant releases heat to the outside air and changes phase to a high-pressure liquid; then, the liquid refrigerant flows through the dryer filter 34 for physical purification, and enters the liquid storage tank 23 for gas-liquid separation and storage.

[0029] Next, the high-pressure liquid refrigerant flows out from the liquid storage tank 23 and passes through the expansion valve 33. Under the mechanical throttling action of the expansion valve 33, the refrigerant pressure drops sharply and instantly transforms into a low-temperature, low-pressure gas-liquid two-phase mixture, which then enters the evaporator 12 or plate heat exchanger 14 at the bottom. In the evaporator 12, the low-temperature refrigerant absorbs a large amount of heat from the air flowing through the heat exchange fins, completes the refrigeration process, re-vaporizes into low-pressure gas, and is finally drawn back into the compressor 21, completing a physical cycle.

[0030] During this process, water droplets generated by condensation on the outer wall of the condenser 11 due to temperature difference drip down under the action of gravity; the corrugated bottom plate 132 of the evaporator water collection tank 13 steadily receives these water droplets, and uses mechanical grooves to gather and discharge the water flow, protecting the evaporator 12 below from corrosion; at the same time, the high-frequency physical vibration generated by the compressor 21 is completely absorbed by the damping spring group 62 at its bottom, and converted into the heat energy of spring compression and tension dissipation, ensuring the quietness and rigidity of the entire frame 5, and completely releasing the physical seizing stress at the rigid copper pipe connection.

[0031] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An air conditioning refrigeration device, characterized in that, include: The frame (5) has a vertical multi-cavity structure; The heat exchanger system (1) is fixedly installed in one side cavity inside the frame (5). The heat exchanger system (1) is arranged in a vertical array of two layers, including a condenser (11) in the upper layer, an evaporator (12) in the lower layer, and an evaporator water collection tank (13) horizontally placed between the bottom of the condenser (11) and the top of the evaporator (12). The compression circulation system (2) is installed in the cavity on the other side of the frame (5). The compression circulation system (2) includes a compressor (21), and the bottom of the compressor (21) is supported by a purely mechanical floating base (6) to physically isolate high-frequency vibration. The piping system (3) connects the heat exchanger system (1) and the compression circulation system (2) through physical pipe fittings and mechanical valves to form a closed fluid circulation loop.

2. An air conditioning refrigeration device according to claim 1, characterized in that, The edge of the evaporator water collection tank (13) is fixedly connected to the crossbeam in the middle of the frame (5); the evaporator water collection tank (13) includes a rectangular outer frame edge (131) and a corrugated bottom plate (132) laid inside the outer frame edge (131). The corrugated bottom plate (132) is used to physically receive and guide the condensate dripping from the condenser (11) to prevent it from splashing onto the evaporator (12) below.

3. An air conditioning refrigeration device according to claim 1, characterized in that, The floating base (6) is set on the load-bearing horizontal plate in the middle of the frame (5); the floating base (6) includes a shelf (61) rigidly attached to the horizontal plate, multiple sets of damping springs (62) arranged linearly and uniformly above the shelf (61), and a support seat (63) fixed to the top of the damping springs (62); the compressor (21) is directly bolted to the top surface of the support seat (63) through the compressor bracket (22).

4. An air conditioning refrigeration device according to claim 3, characterized in that, The compression circulation system (2) also includes a liquid storage tank (23) and a circulation pump (24); the liquid storage tank (23) is vertically mounted in the shape of a column on the bottom plate of the frame (5) and located directly below the compressor (21); the circulation pump (24) is horizontally mounted on the bottom plate on one side of the liquid storage tank (23).

5. An air conditioning refrigeration device according to claim 4, characterized in that, Two or more sight glasses (25) are embedded at intervals along the vertical direction on the outer cylindrical surface of the liquid storage tank (23) for physical and intuitive observation of the liquid level of the refrigerant in the tank.

6. An air conditioning refrigeration device according to claim 1, characterized in that, The heat exchanger system (1) also includes a plate heat exchanger (14); at least two plate heat exchangers (14) are provided, which are vertically suspended on the column profile in the middle of the frame (5) and located in the narrow cavity between the compressor (21) and the condenser (11).

7. An air conditioning refrigeration device according to claim 6, characterized in that, The piping system (3) includes a piping group (31) distributed within the frame, and a ball valve (32), an expansion valve (33), a dryer filter (34), and a coupling (35) installed in series on the piping group (31); the dryer filter (34) is vertically installed on the piping group (31) on the side of the compressor (21), and the expansion valve (33) is located on the piping group (31) that enters the front end of the plate heat exchanger (14).

8. An air conditioning refrigeration device according to claim 1, characterized in that, It also includes an electrical control system (4), which is fully sealed and integrated in the control box. The control box is fixedly installed on the top outer wall of the frame (5) away from the heat exchanger system (1) by a mechanical mounting plate, and is connected to the internal actuators of the equipment through external wiring pipes.

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