Cabinet air conditioner

Abstract

The cabinet air conditioner comprises a mounting frame, an electric control box and a refrigeration mechanism, the mounting frame is provided with a first mounting cavity, a first air inlet and a first air outlet, the electric control box is arranged in the first mounting cavity, the refrigeration mechanism is arranged on the mounting frame, the refrigeration mechanism is electrically connected with the electric control box, and the first air inlet and the first air outlet are formed in the mounting frame. The refrigeration mechanism comprises a frequency converter with a fan, and the frequency converter with the fan is arranged in the first installation cavity and used for enabling air to flow into the first installation cavity from the first air inlet and flow out of the first air outlet after flowing through the electric control box. The electric control box, the electric reactor and the frequency converter with the fan are installed in the first installation cavity, airflow circulation power is provided for the first installation cavity through the automatic fan of the frequency converter, cooling of the electric control box and the electric reactor is achieved, the structure is simple, and cost is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioning units, in particular to a cabinet air conditioner. BACKGROUND

[0002] The cabinet air conditioner is a device capable of adjusting the temperature, relative humidity and flow speed of air in an electrical control cabinet.

[0003] In the related art, the heat dissipation mode of the electric control box of the cabinet air conditioner can increase a heat dissipation aluminum plate on the electrical element that needs to be cooled, for example, a heat dissipation aluminum plate can be added to the electric control board, and a liquid cooling pipe is connected from the refrigeration system to the lower side of the heat dissipation aluminum plate, and a heat-conducting silicone grease is applied on the contact surface between the liquid cooling pipe and the heat dissipation aluminum plate, so that the heat generated by the electrical element is taken away by using the refrigerant as a medium.

[0004] In the process of implementing the present application, the inventors have found that the prior art at least has the following problems:

[0005] After increasing the heat dissipation aluminum plate on the electrical element, the cost is correspondingly increased, the connection of the liquid cooling pipe will affect the distribution of the pipeline, the structure is complex, and for small air conditioning units, due to limited space, it is difficult to use this way. CONTENT OF THE UTILITY MODEL

[0006] In order to overcome the problems existing in the related art, the main purpose of the present application is to provide a cabinet air conditioner with simple structure and low cost.

[0007] In order to achieve the above purpose, the following technical solutions are specifically adopted in the present application:

[0008] The present application provides a cabinet air conditioner, wherein the air conditioner cabinet comprises:

[0009] A mounting frame is provided with a first mounting cavity, a first air inlet and a first air outlet;

[0010] An electric control box is arranged in the first mounting cavity;

[0011] A refrigeration mechanism is arranged in the mounting frame, and the refrigeration mechanism is electrically connected with the electric control box;

[0012] The refrigeration mechanism comprises a fan variable frequency device, which is arranged in the first mounting cavity, and is used for making air flow into the first mounting cavity from the first air inlet, and then flow out from the first air outlet after flowing through the electric control box.

[0013] In some embodiments, the cabinet air conditioner further includes a reactor disposed in the first mounting cavity, and the frequency converter with fan is also used to allow air to flow into the first mounting cavity from the first air inlet, and flow out from the first air outlet after passing through the reactor.

[0014] In some embodiments, the electrical control box is mounted on the side wall of the first mounting cavity, and the first air inlet and the first air outlet are located on opposite sides of the electrical control box.

[0015] In some embodiments, the electrical control box is provided with an air inlet and an air outlet, the air inlet and the first air inlet being located on the same side of the electrical control box, and the air outlet and the first air outlet being located on the same side of the electrical control box.

[0016] In some embodiments, the first air inlet is provided in multiple ways, and the multiple first air inlets are respectively opened on the bottom wall of the first mounting cavity and located on both sides of the reactor, and the first air outlet is opened on the side wall of the first mounting cavity.

[0017] In some embodiments, the sidewall of the first mounting cavity is provided with a first opening, and the mounting frame further includes a first protective net, which is installed at the first opening and has a plurality of first ventilation holes, which together form the first air outlet.

[0018] In some embodiments, the mounting bracket includes a first frame, a second frame, and a partition. The partition is connected to the first frame to divide the first frame into a first mounting cavity and a second mounting cavity. The second frame is connected to the first frame and has a third mounting cavity.

[0019] The refrigeration mechanism further includes a refrigeration unit and a coil assembly. The refrigeration unit is disposed in the second mounting cavity, and the coil assembly is disposed in the third mounting cavity. The refrigeration unit is connected to the frequency converter with fan and the coil assembly, respectively.

[0020] In some embodiments, the coil assembly includes a water coil and a refrigerant coil, and the refrigerator assembly includes a compressor, a plate heat exchanger, and a throttling element. The compressor, the plate heat exchanger, the throttling element, and the refrigerant coil are connected through a first pipeline to form a refrigerant cooling circulation loop. The plate heat exchanger is also connected to an external cooling water supply device through a second pipeline, and the water coil is connected to an external cooling water supply device through a third pipeline. The frequency converter with a fan is connected to the compressor and is used to control the speed of the compressor.

[0021] In some embodiments, the second mounting cavity is provided with a second opening, and the mounting frame further includes a second protective net, which is installed at the second opening and has a plurality of second ventilation holes.

[0022] In some embodiments, the third mounting cavity is provided with a second air inlet and a second air outlet;

[0023] The refrigeration mechanism further includes an evaporator fan, which is located at the second air outlet and is used to allow air to flow from the second air inlet into the third mounting cavity and out from the second air outlet.

[0024] Compared to existing technologies, the rack air conditioner of this application includes a mounting frame, an electrical control box, and a refrigeration mechanism. The mounting frame has a first mounting cavity, a first air inlet, and a first air outlet. The electrical control box is disposed in the first mounting cavity, and the refrigeration mechanism is disposed in the mounting frame and electrically connected to the electrical control box. The refrigeration mechanism includes a frequency converter with a fan, which is disposed in the first mounting cavity to allow air to flow into the first mounting cavity from the first air inlet, pass through the electrical control box, and then flow out from the first air outlet, thereby achieving heat dissipation for the electrical control box. Its structure is simple and its cost is low. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of the cabinet air conditioner provided in an embodiment of this application.

[0026] Figure 2 for Figure 1 A close-up view of the central cabinet air conditioner.

[0027] Figure 3 This is a structural schematic diagram of the cabinet air conditioner provided in an embodiment of this application from another angle.

[0028] Figure 4 for Figure 3 A magnified view of a section AA in the middle.

[0029] Attached image labels:

[0030] 1. Mounting bracket; 11. First frame; 111. First mounting cavity; 112. Second mounting cavity; 113. First air inlet; 114. First opening; 115. Second opening; 12. Second frame; 13. Partition; 14. Second protective mesh; 2. Electrical control box; 21. Box body; 3. Reactor; 4. Frequency converter with fan; 5. Refrigeration unit; 51. Plate heat exchanger; 6. Display screen. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0032] In the description of this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more; the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] In the description of this specification, it should be understood that the directional terms such as "upper" and "lower" used in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should also be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0034] A server rack air conditioner typically consists of a cabinet, a refrigeration unit, an electrical control box, and a reactor. The refrigeration unit and the electrical control box are installed inside the cabinet. The refrigeration unit cools the environment to be cooled, such as a server room. The electrical control box is electrically connected to the refrigeration unit to control its operation. The reactor is electrically connected to the electrical control box to optimize circuit performance and ensure stable operation. However, the electrical control box and reactor generate a significant amount of heat during operation, requiring heat dissipation and cooling. This can be achieved through external ventilation, allowing the heat to be carried away by airflow. The reactor, also called an inductor, is widely used in circuits. Due to the effect of electromagnetic induction, it possesses a certain degree of inductance. The reactor's function is to prevent changes in current.

[0035] In related technologies, the heat dissipation methods for the electrical control box of existing cabinet air conditioners typically include: The first method involves installing the control box on the air inlet or outlet side of the evaporator, housing the electrical components inside the box, and creating ventilation holes to allow heat generated by the components to dissipate through airflow. However, if the control box is installed on the return air side of the evaporator, sufficient space is required, which is often insufficient. If installed on the outlet air side, the lower supply air temperature below the dew point can cause condensation on the electrical components and aluminum fins (some components have aluminum fins for heat dissipation), posing a significant risk. The second method involves adding openings to the control box and an additional drive fan for heat dissipation. However, this increases costs, and the additional drive fan has limited integration with the refrigeration system, making it difficult to accurately control the control box within the appropriate temperature range.

[0036] Reference Figure 1 and Figure 2 As shown, an embodiment of this application discloses a rack-mounted air conditioner, which includes a mounting frame 1, an electrical control box 2, a reactor 3, and a refrigeration mechanism. The mounting frame 1 includes a first frame 11, a second frame 12, and a partition 13. The partition 13 is disposed on the first frame 11, dividing the first frame 11 into a first mounting cavity 111 and a second mounting cavity 112. The second frame 12 is connected to the first frame 11, and the second frame 12 is provided with a third mounting cavity. The first mounting cavity 111 is provided with a first air inlet 113. Figure 4 As shown in the diagram, the first mounting cavity 111 has a first air outlet, and the third mounting cavity has a second air inlet and a second air outlet. The refrigeration mechanism includes a fan-equipped inverter 4, a cooler assembly 5, and a coil assembly. The cooler assembly 5 is located in the second mounting cavity 112, and the coil assembly is located in the third mounting cavity. The cooler assembly 5 and the coil assembly are connected to form a cooling circulation loop, which can achieve cooling of the environment to be cooled. The electrical control box 2, the reactor 3, and the fan-equipped inverter 4 are respectively located in the first mounting cavity 111. The electrical control box 2 is used to control the operation of the fan-equipped inverter 4 and the cooler assembly 5, and the reactor 3 is used to optimize and stabilize the circuit performance. The frequency converter 4 with fan is connected to the refrigeration assembly 5 to control the refrigeration efficiency of the refrigeration assembly 5. At the same time, the fan on the frequency converter 4 with fan can provide airflow circulation power to the first mounting cavity 111, so that air flows into the first mounting cavity 111 from the first air inlet 113, then flows through the electrical control box 2 and the reactor 3 and flows out from the first air outlet of the first mounting cavity 111, thereby realizing the cooling and heat dissipation of the electrical control box 2 and the reactor 3.

[0037] This application installs the electrical control box 2, reactor 3, and frequency converter 4 with a fan in the first mounting cavity 111. The automatic fan of the frequency converter provides airflow circulation power to the first mounting cavity 111, thereby achieving cooling of the electrical control box 2 and reactor 3. Its structure is simple and low cost. At the same time, the first frame 11 is divided into two cavities by the partition 13. The electrical control box 2 and reactor 3 are installed in one cavity, and the cooler assembly 5 is installed in the other cavity. This can prevent the heat generated by the cooler assembly 5 (e.g., compressor) during operation from being transferred to the cavity where the electrical control box 2 is located, thus affecting the heat dissipation effect of the electrical control box 2 and reactor 3.

[0038] Reference Figure 3 and Figure 4 As shown, in this embodiment, the frequency converter 4 with fan is installed on the side wall of the first mounting cavity 111 near the second mounting cavity 112, and the frequency converter 4 with fan is arranged facing the air inlet. Of course, in other embodiments, the frequency converter 4 with fan can also be installed at the first air outlet. The reactor 3 is disposed on the bottom wall of the first mounting cavity 111. The electrical control box 2 includes a box body 21 and electrical components. The box body 21 is installed on the other side wall of the first mounting cavity 111 away from the second mounting cavity 112, and the side wall on which the box body 21 is installed is opposite to the side wall on which the frequency converter 4 with fan is installed. The electrical components are installed inside the box body 21. At the same time, air inlets and air outlets are respectively provided on opposite sides of the box body 21, so that the first air inlet 113, the first mounting cavity 111, the air inlet of the box body 21, the cavity of the box body 21, the air outlet of the box body 21 and the first air outlet form a first heat dissipation air duct, and the first air inlet 113, the first mounting cavity 111 and the first air outlet form a second heat dissipation air duct. In this embodiment, the inverter's built-in fan is used as the drive fan, forming a circulating air duct in the entire first mounting cavity 111. When the inverter 4 with fan is started, external air can flow into the first mounting cavity 111 from the first air inlet 113, and then flow through the air inlet of the housing 21, the cavity of the housing 21, and the air outlet of the housing 21 before flowing out from the first air outlet, thereby cooling the electrical components inside the control box 2. Alternatively, the air introduced into the first mounting cavity 111 can also flow through the reactor 3 and directly out from the first air outlet, thereby cooling the reactor 3. In addition, in this embodiment, by installing the inverter 4 with fan and the control box 2 on the side wall of the first mounting cavity 111 respectively, the inverter 4 with fan and the control box 2 can be locked to the side wall of the first mounting cavity 111 simply by using locking components, making installation simple and convenient.

[0039] In this embodiment, the first air inlet 113 and the first air outlet are located on opposite sides of the electrical control box 2, and the air inlet hole and the first air inlet 113 of the electrical control box 2 are located on the same side of the electrical control box 2, and the air outlet hole and the first air outlet of the electrical control box 2 are located on the same side of the electrical control box 2, so that the air flows more smoothly under the action of the fan inverter 4, and the heat dissipation effect on the electrical control box is enhanced.

[0040] To further improve heat dissipation efficiency, multiple first air inlets 113 are provided. These multiple first air inlets 113 are respectively opened on the bottom wall of the first mounting cavity 111 and located on both sides of the reactor 3. In this embodiment, two first air inlets 113 are provided, with the two first air inlets 113 respectively located on both sides of the reactor 3. The first air outlet is opened on the side wall of the first mounting cavity 111. This embodiment, by providing multiple first air inlets 113, can increase the airflow and thus improve heat dissipation efficiency. At the same time, placing the first air inlets 113 on both sides of the reactor 3 improves the heat dissipation effect on the reactor 3.

[0041] In some embodiments, the sidewall of the first mounting cavity 111 is provided with a first opening 114, the second mounting cavity 112 is provided with a second opening 115, and the mounting bracket 1 further includes a first protective net and a second protective net 14. The first protective net is installed at the first opening 114 and is provided with a plurality of first ventilation holes, which together form a first air outlet. The second protective net 14 is installed at the second opening 115 and is provided with a plurality of second ventilation holes, so that the heat generated by the cooler assembly 5 can be dissipated into the outside air through the second protective net 14. This embodiment, through the provision of the first protective net and the second protective net 14, can prevent users from touching the components and causing danger.

[0042] In some embodiments, the third mounting cavity is provided with a second air inlet and a second air outlet. The refrigeration mechanism further includes an evaporator fan and a filter. The filter is disposed at the second air inlet to filter the air entering the second mounting cavity. The evaporator fan is disposed at the second air outlet to allow air to flow from the second air inlet into the third mounting cavity and out of the second air outlet, thereby accelerating the heat exchange between the coil assembly and the air.

[0043] The coil assembly includes a water coil and a refrigerant coil. The refrigeration unit 5 includes a compressor, a plate heat exchanger 51, and a throttling element, which can be an electronic expansion valve. The compressor, plate heat exchanger 51, electronic expansion valve, and refrigerant coil are connected through a first pipeline, and the plate heat exchanger 51 is also connected to an external cooling water supply device through a second pipeline, forming a refrigerant cooling circulation loop. The water coil is connected to an external cooling water supply device through a third pipeline, forming a cooling water circulation loop. A fan-equipped frequency converter 4 is connected to the compressor to control the compressor speed, thereby controlling the refrigeration efficiency.

[0044] In practical applications, when cooling the computer room is required, the refrigeration unit can be activated. The evaporator fan draws air from the computer room into the third mounting cavity through the second air inlet and out through the second air outlet. At this time, the external cooling water supply equipment provides cooling water to the water coils. The cooling water exchanges heat with the air in the water coils, thus cooling the air. Simultaneously, the refrigerant also exchanges heat with the air in the refrigerant coils, further cooling the air, thereby achieving the purpose of cooling the computer room. Afterwards, the cooling water that has undergone heat exchange in the water coil continues to flow back to the external cooling water supply equipment and is cooled, thus forming a cooling water circulation loop; while the refrigerant undergoes heat exchange in the refrigerant coil and becomes gaseous refrigerant, then enters the compressor for compression and flows into the plate heat exchanger 51. After heat exchange with the cooling water supplied by the external cooling water supply equipment in the plate heat exchanger 51, the gaseous refrigerant releases heat and becomes liquid refrigerant. After being throttled by the throttling element, it flows back into the refrigerant coil to continue heat exchange, thus forming a refrigerant cooling circulation loop.

[0045] To facilitate real-time monitoring of the cooling status, the cabinet air conditioner also includes a display screen 6, which is located on the second frame 12 and connected to the cooling mechanism. The display screen 6 can be a touch screen and has an on / off switch. The display screen 6 can be used to display inlet and outlet water temperatures, inlet and outlet air temperatures, etc.

[0046] Based on the design of the cabinet air conditioner itself, this application utilizes the actual application scenario and, through the layout of the components and the addition of corresponding opening structures, enables the electrical control box 2, reactor 3, and first mounting cavity 111 to form a circulating air duct under the action of the built-in fans of the electrical components. This achieves the purpose of heat dissipation for reactor 3 and electrical control box 2. At the same time, since reactor 3, electrical control box 2, and first mounting cavity 111 are all hot cavities, condensation will not occur. Compared with the heat dissipation methods of adding heat sinks, heat dissipation plates, or heat dissipation fans in related technologies, the heat dissipation structure of electrical control box 2 and reactor 3 in this application is simpler, lower in cost, and will not cause related problems due to the addition of components.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A rack-mounted air conditioner, characterized in that, include: The mounting bracket is provided with a first mounting cavity, a first air inlet and a first air outlet; An electrical control box is disposed within the first mounting cavity; A refrigeration mechanism is disposed on the mounting frame and is electrically connected to the electrical control box; The refrigeration mechanism includes a frequency converter with a fan, which is disposed in the first mounting cavity to allow air to flow into the first mounting cavity from the first air inlet, and then flow out from the first air outlet after passing through the electrical control box.

2. The cabinet air conditioner according to claim 1, characterized in that, The cabinet air conditioner also includes a reactor, which is disposed in the first mounting cavity. The frequency converter with fan is also used to allow air to flow into the first mounting cavity from the first air inlet, and then flow out from the first air outlet after passing through the reactor.

3. The cabinet air conditioner according to claim 2, characterized in that, The electrical control box is installed on the side wall of the first mounting cavity, and the first air inlet and the first air outlet are located on opposite sides of the electrical control box.

4. The cabinet air conditioner according to claim 3, characterized in that, The electrical control box is provided with an air inlet and an air outlet. The air inlet and the first air inlet are located on the same side of the electrical control box, and the air outlet and the first air outlet are located on the same side of the electrical control box.

5. The cabinet air conditioner according to claim 3, characterized in that, The first air inlet is provided in multiple ways, and the multiple first air inlets are respectively opened on the bottom wall of the first mounting cavity and located on both sides of the reactor. The first air outlet is opened on the side wall of the first mounting cavity.

6. The cabinet air conditioner according to claim 3, characterized in that, The first mounting cavity has a first opening on its side wall. The mounting frame also includes a first protective net. The first protective net is installed at the first opening and has multiple first ventilation holes. The multiple first ventilation holes form the first air outlet.

7. The cabinet air conditioner according to any one of claims 1 to 6, characterized in that, The mounting bracket includes a first frame, a second frame, and a partition. The partition is connected to the first frame to divide the first frame into a first mounting cavity and a second mounting cavity. The second frame is connected to the first frame and has a third mounting cavity. The refrigeration mechanism further includes a refrigeration unit and a coil assembly. The refrigeration unit is disposed in the second mounting cavity, and the coil assembly is disposed in the third mounting cavity. The refrigeration unit is connected to the frequency converter with fan and the coil assembly, respectively.

8. The cabinet air conditioner according to claim 7, characterized in that, The coil assembly includes a water coil and a refrigerant coil. The refrigeration assembly includes a compressor, a plate heat exchanger, and a throttling element. The compressor, the plate heat exchanger, the throttling element, and the refrigerant coil are connected through a first pipeline to form a refrigerant cooling circulation loop. The plate heat exchanger is also connected to an external cooling water supply device through a second pipeline. The water coil is connected to an external cooling water supply device through a third pipeline. The frequency converter with a fan is connected to the compressor and is used to control the speed of the compressor.

9. The cabinet air conditioner according to claim 8, characterized in that, The second mounting cavity is provided with a second opening, and the mounting frame also includes a second protective net, which is installed at the second opening and has a plurality of second ventilation holes.

10. The cabinet air conditioner according to claim 8, characterized in that, The third mounting cavity is provided with a second air inlet and a second air outlet; The refrigeration mechanism further includes an evaporator fan, which is located at the second air outlet and is used to allow air to flow from the second air inlet into the third mounting cavity and out from the second air outlet.

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