Dual-condensation refrigeration equipment

Abstract

The utility model discloses double-condensation refrigeration equipment, which relates to the technical field of machine room refrigeration, and comprises a box body, a water storage tank and an air handling unit, and an indoor air duct and an outdoor air duct are arranged in the box body; the water storage tank is arranged in the box body, and cooling water is filled in the water storage tank; the air handling unit comprises an air-cooled condenser, a water-cooled condenser, a throttle valve, an evaporator and a compressor which are sequentially connected end to end through pipelines, and the air-cooled condenser is arranged at the air outlet end of the outdoor air duct and exchanges heat with air in the outdoor air duct; the water-cooling condenser is arranged in the water storage tank and exchanges heat with cooling water; the evaporator is arranged at the air outlet end of the indoor air duct. Compared with the prior art, the air-cooled condensing effect and the water-cooled condensing effect are achieved through the air-cooled condenser and the water-cooled condenser respectively, the refrigerating effect can be greatly improved, the refrigerating capacity of equipment is increased, overload of the compressor is prevented, and the safety of a refrigerating system is improved.

Description

Technical Field

[0001] This utility model relates to the field of computer room refrigeration technology, and more specifically, to a dual condensation refrigeration device. Background Technology

[0002] Traditional air conditioning systems typically use single air-cooled or water-cooled condensers. However, in recent years, as the requirements for cooling energy efficiency have increased year by year, such as users having increasingly higher requirements for the PUE (Power Usage Effectiveness) of data centers, there is an urgent need for more efficient cooling systems, increased equipment cooling capacity, and improved cooling safety.

[0003] Currently, the application of indirect evaporation AHU (Air Handling Unit) as a highly efficient new type of distributed refrigeration unit is increasing year by year. The condenser of indirect evaporation AHU is usually an air-cooled condenser. How to improve the refrigeration effect of indirect evaporation AHU, increase the cooling capacity of the equipment, and improve the safety of the refrigeration system are the technical problems that need to be solved. Utility Model Content

[0004] The purpose of this invention is to provide a dual-condensation refrigeration device that can adopt a dual-condensation scheme to combine air-cooled condensation and water-cooled condensation, which can significantly improve the refrigeration effect of the refrigeration system, increase the cooling capacity of the device, and enhance the safety of the refrigeration system.

[0005] The embodiments of this utility model are implemented as follows:

[0006] In one aspect, this utility model provides a dual-condensation refrigeration device, comprising:

[0007] The enclosure contains an indoor air duct and an outdoor air duct.

[0008] A water storage tank is installed inside the box, and the water storage tank is filled with cooling water;

[0009] The air handling unit housed within the enclosure includes an air-cooled condenser, a water-cooled condenser, a throttling valve, an evaporator, and a compressor. These components are connected sequentially via pipes, forming a circulation loop. The air-cooled condenser is located at the outlet of the outdoor duct and is configured to exchange heat with the air within the duct. The water-cooled condenser is located within a water storage tank and is configured to exchange heat with the cooling water in the tank. The evaporator is located at the outlet of the indoor duct and is configured to exchange heat with the air within the indoor duct.

[0010] In an optional embodiment, the air handling unit further includes an air-to-air heat exchange core having a first heat exchange channel and a second heat exchange channel, the first heat exchange channel being connected to the indoor air duct and the second heat exchange channel being connected to the outdoor air duct, the air-to-air heat exchange core being configured to exchange heat between the air in the indoor air duct and the air in the outdoor air duct.

[0011] In an optional embodiment, the end of the air-cooled condenser is provided with a rotating shaft, which is rotatably disposed in the outdoor air duct so that the air-cooled condenser can adjust the angle between itself and the air outlet direction of the outdoor air duct, and adjust the windward area.

[0012] In an optional embodiment, the angle between the air-cooled condenser and the air outlet direction of the outdoor air duct is between 0° and 90°.

[0013] In an optional embodiment, an indoor fan is also provided at the air outlet of the indoor air duct, the evaporator is provided on the air inlet side of the indoor fan, an outdoor fan is also provided at the air outlet of the outdoor air duct, and the air-cooled condenser is provided on the air inlet side of the outdoor fan.

[0014] In an optional embodiment, the volume of the water-cooled condenser is smaller than that of the air-cooled condenser.

[0015] In an optional embodiment, the air-cooled condenser includes a finned coil heat exchanger, and the water-cooled condenser includes a heat exchange coil or a shell-and-tube heat exchanger.

[0016] In an optional embodiment, the dual condensation refrigeration equipment further includes a wet film cooling component disposed within the housing and partially disposed at the air inlet of the outdoor air duct. The wet film cooling component is connected to the water storage tank and is configured to cool the air within the outdoor air duct.

[0017] In an optional embodiment, the wet film cooling assembly includes a cooling wet film, a water supply pipe, and a water supply pump. The cooling wet film is disposed in the outdoor air duct. One end of the water supply pipe is connected to the top of the cooling wet film, and the other end is connected to the water storage tank. The water supply pump is disposed on the water supply pipe.

[0018] In an optional embodiment, the wet film cooling assembly further includes a return water pipe, one end of which is connected to the bottom end of the cooling wet film and the other end of which is connected to the water storage tank. The return water pipe is configured to collect the cooling water left on the cooling wet film and return it to the water storage tank.

[0019] In an optional embodiment, the water storage tank is further provided with a water inlet, and a liquid level sensor is provided inside the water storage tank. The liquid level sensor is configured to detect the liquid level height in the water storage tank, and the water inlet is configured to selectively replenish cooling water into the water storage tank according to the liquid level height.

[0020] The beneficial effects of this utility model embodiment are:

[0021] The dual-condensation refrigeration equipment provided in this embodiment of the invention features an indoor and outdoor air duct within a housing. A water storage tank filled with cooling water is also located within the housing. The air-cooled condenser, water-cooled condenser, expansion valve, evaporator, and compressor of the air handling unit are connected sequentially via pipes, forming a circulation loop. The air-cooled condenser is located at the outlet of the outdoor air duct, configured to exchange heat with the air in the outdoor duct, achieving air-cooled condensation. The water-cooled condenser is located in the water storage tank, configured to exchange heat with the cooling water in the tank, achieving water-cooled condensation. The evaporator is located at the outlet of the indoor air duct, configured to exchange heat with the air in the indoor air duct, thereby cooling the air entering the room. Compared to existing technologies, this invention achieves air-cooled and water-cooled condensation effects through the separate use of air-cooled and water-cooled condensers, significantly improving the cooling effect, increasing the cooling capacity of the equipment, preventing compressor overload, and enhancing the safety of the refrigeration system. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the overall dual-condensation refrigeration equipment provided in this embodiment of the utility model;

[0024] Figure 2 for Figure 1 Schematic diagram of the distribution structure of the air handling unit;

[0025] Figure 3 for Figure 1 Schematic diagram of the distribution structure of the medium-humidity film cooling assembly.

[0026] icon:

[0027] 100 - Dual-condensation refrigeration equipment; 110 - Cabinet; 111 - Indoor air duct; 112 - Outdoor air duct; 113 - Outdoor air inlet; 114 - Outdoor air outlet; 115 - Indoor air inlet; 116 - Indoor air outlet; 130 - Water storage tank; 131 - Water inlet; 133 - Liquid level sensor; 150 - Air handling unit; 151 - Air-cooled condenser; 152 - Water-cooled condenser; 153 - Throttling valve; 154 - Evaporator; 155 - Compressor; 156 - Air-to-air heat exchange core; 157 - Shaft; 160 - Indoor fan; 170 - Outdoor fan; 180 - Wet film cooling assembly; 181 - Cooling wet film; 182 - Water supply pipe; 183 - Water supply pump; 184 - Return water pipe. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. 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. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] As disclosed in the background section, in recent years, with the increasing use of indirect evaporation AHU refrigeration equipment, the demand for optimization and upgrading has been growing, aiming to improve its refrigeration efficiency and capacity, save energy, and achieve more efficient condensation. Currently, the condensers of indirect evaporation AHUs (Air Handling Units) are typically air-cooled condensers, meaning that condensation is achieved through a single air-cooled heat exchange, which is insufficient to meet the increasing refrigeration demands.

[0035] To address the aforementioned problems, this utility model provides a novel dual-condensation refrigeration device. The dual-condensation refrigeration device will be described in detail below. It is worth noting that, unless otherwise specified, the features in this utility model embodiment can be combined with each other.

[0036] See Figures 1 to 3 This utility model provides a dual-condensation refrigeration device 100, which can adopt a dual-condensation scheme to combine air-cooled condensation and water-cooled condensation, which can significantly improve the refrigeration effect of the refrigeration system, increase the refrigeration capacity of the device, and improve the safety of the refrigeration system.

[0037] The dual-condensation refrigeration equipment 100 provided in this embodiment of the utility model includes a housing 110, a water storage tank 130, and an air handling unit 150. The housing 110 is provided with an indoor air duct 111 and an outdoor air duct 112. The water storage tank 130 is disposed inside the housing 110 and contains cooling water. The air handling unit 150 is disposed inside the housing 110 and includes an air-cooled condenser 151, a water-cooled condenser 152, a throttle valve 153, an evaporator 154, and a compressor 155. 1. The water-cooled condenser 152, the expansion valve 153, the evaporator 154, and the compressor 155 are connected end to end by pipes to form a circulation loop. The air-cooled condenser 151 is located at the air outlet of the outdoor air duct 112 and is configured to exchange heat with the air in the outdoor air duct 112. The water-cooled condenser 152 is located in the water storage tank 130 and is configured to exchange heat with the cooling water in the water storage tank 130. The evaporator 154 is located at the air outlet of the indoor air duct 111 and is configured to exchange heat with the air in the indoor air duct 111.

[0038] In actual cooling, the indoor air duct 111 is connected to the indoor space, and the outdoor air duct 112 is connected to the outdoor space. The indoor air duct 111 and the outdoor air duct 112 are mutually isolated. The air in the indoor air duct 111 can be cooled by the evaporator 154, while the air-cooled condenser 151 can be cooled by the air in the outdoor air duct 112. The water-cooled condenser 152 can be cooled by the cooling water in the water storage tank 130. Therefore, the condensing pressure and the discharge pressure of the compressor 155 are effectively reduced, the cooling capacity of the compressor 155 is greatly increased, and the cooling effect is greatly improved. This increases the cooling capacity of the equipment, effectively prevents the compressor 155 from overloading, and improves the safety of the refrigeration system.

[0039] In some embodiments, the air handling unit 150 further includes an air-to-air heat exchange core 156, which has a first heat exchange channel and a second heat exchange channel. The first heat exchange channel is connected to the indoor air duct 111, and the second heat exchange channel is connected to the outdoor air duct 112. The air-to-air heat exchange core 156 is configured to exchange heat between the air in the indoor air duct 111 and the air in the outdoor air duct 112. Specifically, the air-to-air heat exchange core 156 is an air-to-air heat exchanger, and heat exchange can be achieved between the first heat exchange channel and the second heat exchange channel, thereby realizing heat exchange between the air in the indoor air duct 111 and the air in the outdoor air duct 112. For computer room usage scenarios, by setting up the air-to-air heat exchange core 156, the air in the indoor air duct 111 can be cooled in one step, reducing the temperature of the air in the indoor air duct 111. The evaporator 154 can then cool the air in the indoor air duct 111 in two steps, further reducing the temperature of the air returning to the room, thus achieving cooling of the computer room.

[0040] The pipes in the circulation loop can be filled with refrigerant, such as R12, R22, R134a, R407c, R410a, R290, or R32, preferably Freon. Compressor 155 is the refrigeration compressor 155 of the Freon system. Air-cooled condenser 151 allows heat exchange between the refrigerant in the circulation loop and the air, while water-cooled condenser 152 allows heat exchange between the refrigerant in the circulation loop and the cooling water. Throttling valve 153 can be an electronic expansion valve or a thermostatic expansion valve, etc.

[0041] It is worth noting that in this embodiment, the housing 110 is provided with multiple ventilation openings, and an indoor air duct 111 and an outdoor air duct 112 are provided inside the housing 110. The indoor air duct 111 and the outdoor air duct 112 are separated from each other. The housing 110 is divided into an upper chamber and a lower chamber. The upper chamber can form the outdoor air duct 112, and the upper and lower chambers can form the indoor air duct 111. The left and right ends of the upper chamber are the outdoor air inlet 113 and the outdoor air outlet 114 of the outdoor air duct 112, respectively. The upper end of the upper chamber is the indoor air inlet 115, and one end of the lower chamber is the indoor air outlet 116. At the same time, the indoor air duct 111 extends from the upper chamber to the lower chamber, and the space between the upper and lower chambers is the internal ventilation opening. Furthermore, in order to avoid excessive pressure expansion in the indoor air duct 111, a partition can be provided on the side of the internal ventilation opening away from the indoor air outlet 116. This partition can guide the flow of indoor air.

[0042] It should be noted that, in this embodiment, the air outlet of the indoor air duct 111 refers to the area between the air-to-air heat exchange core 156 and the indoor air outlet 116; the air inlet of the outdoor air duct 112 refers to the area between the air-to-air heat exchange core 156 and the outdoor air inlet 113; and the air outlet of the outdoor air duct 112 refers to the area between the air-to-air heat exchange core 156 and the outdoor air outlet 114.

[0043] In some embodiments, a rotating shaft 157 is provided at the end of the air-cooled condenser 151. The rotating shaft 157 is rotatably disposed within the outdoor air duct 112, allowing the air-cooled condenser 151 to adjust the angle between itself and the air outlet direction of the outdoor air duct 112, and to adjust its frontal area. Specifically, a mounting block can be provided at the end of the air-cooled condenser 151, on which the rotating shaft 157 is mounted. The rotating shaft 157 is rotatably connected to the side wall of the outdoor air duct 112, and is perpendicular to the air outlet direction of the outdoor air duct 112. Simultaneously, the rotating shaft 157 can be connected to a drive motor, which rotates the rotating shaft 157, thereby driving the air-cooled condenser 151 to rotate. By rotating the air-cooled condenser 151, the frontal area can be adjusted, thereby appropriately adjusting the wind resistance, thus appropriately reducing energy consumption and achieving energy saving. Of course, in other preferred embodiments of this invention, the rotating shaft 157 can also be rotated manually, i.e., the air-cooled condenser 151 can be rotated manually.

[0044] Furthermore, the angle between the air-cooled condenser 151 and the air outlet direction of the outdoor air duct 112 is between 0° and 90°. Specifically, the air-cooled condenser 151 can be configured to rotate 90°, that is, the air-cooled condenser 151 can switch between a horizontal placement state and a vertical placement state. Preferably, when the compressor 155 is turned off, the air-cooled condenser 151 can be rotated to a horizontal placement, thereby further reducing the air resistance of the outdoor air duct 112.

[0045] It should be noted that the air-cooled condenser 151 here is disc-shaped, and the angle between the air-cooled condenser 151 and the air outlet direction of the outdoor air duct 112 refers to the angle between the disc surface (i.e. the surface through which the airflow passes) of the air-cooled condenser 151 and the horizontal direction.

[0046] In some embodiments, an indoor fan 160 is also provided at the air outlet of the indoor duct 111, and an evaporator 154 is provided on the air inlet side of the indoor fan 160. An outdoor fan 170 is also provided at the air outlet of the outdoor duct 112, and an air-cooled condenser 151 is provided on the air inlet side of the outdoor fan 170. Specifically, the indoor fan 160 is the power device for circulating air in the indoor duct 111, which can blow the cooled air in the indoor duct 111 back into the indoor side, thereby providing cold air to the room to achieve cooling. The outdoor fan 170 is the power device for airflow in the outdoor duct 112, which can maintain outdoor airflow, thereby achieving air-to-air heat exchange and air-cooled condensation.

[0047] In some embodiments, the volume of the water-cooled condenser 152 is smaller than that of the air-cooled condenser 151. Specifically, the heat exchange effect of the water-cooled condenser 152 is better than that of the air-cooled condenser 151, so the water-cooled condenser 152 can be made smaller and easier to place in the water storage tank 130, effectively reducing the condensing pressure and the discharge pressure of the compressor 155.

[0048] In some embodiments, the air-cooled condenser 151 includes a finned coil heat exchanger or a microchannel heat exchanger, and the water-cooled condenser 152 includes a heat exchange coil or a shell-and-tube heat exchanger. Of course, the specific structural forms of the air-cooled condenser 151 and the water-cooled condenser 152 are not specifically limited herein.

[0049] In some embodiments, the dual-condensation refrigeration device 100 further includes a wet film cooling assembly 180, which is disposed within the housing 110 and partially disposed at the air inlet of the outdoor air duct 112. The wet film cooling assembly 180 is connected to a water storage tank 130 and is configured to cool the air within the outdoor air duct 112. Specifically, the wet film cooling assembly 180 can utilize the cooling water in the water storage tank 130 to cool the air entering the outdoor air duct 112, thereby enabling the air entering the air-to-air heat exchange core 156 to be pre-humidified and cooled, ensuring the heat exchange effect of the air-to-air heat exchange core 156.

[0050] The wet film cooling assembly 180 includes a cooling wet film 181, a water supply pipe 182, and a water supply pump 183. The cooling wet film 181 is installed inside the outdoor air duct 112. One end of the water supply pipe 182 is connected to the top of the cooling wet film 181, and the other end is connected to a water storage tank 130. The water supply pump 183 is installed on the water supply pipe 182. Specifically, the cooling wet film 181 is perpendicular to the air intake direction of the outdoor air duct 112, ensuring that most of the air entering the outdoor air duct 112 can pass through the cooling wet film 181. When no water is supplied, the cooling wet film 181 is in a dry state and does not participate in cooling. When water is supplied, the cooling water can flow along the cooling wet film 181 and be cooled by evaporation, thereby humidifying and cooling the air that passes through it, ensuring that the air temperature entering the air-to-air heat exchange core 156 is low enough, and improving the heat exchange effect of the air-to-air heat exchange core 156. The water supply pipe 182 can spray cooling water onto the cooling wet film 181 by spraying, thereby expanding the cooling range. By setting up the cooling wet film 181, the fresh air in the outdoor air duct 112 can be humidified (water evaporation cooling) through the cooling wet film 181 and reduced to close to the wet bulb temperature before exchanging heat with the circulating air in the indoor air duct 111, thus cooling the indoor side.

[0051] It should be noted that the water supply pump 183 here is an electrically controlled pump, which can be turned on or off according to the actual environment. For example, in winter, because the outdoor temperature is low enough, the air in the indoor air duct 111 can be cooled simply by using the air-to-air heat exchange core 156. At this time, the water supply pump 183, compressor 155, etc., can be turned off, and the water storage tank 130 can be emptied to prevent freezing. In spring and autumn, the water supply pump 183 can be turned on. For specific mode control, please refer to the following text.

[0052] Furthermore, the wet film cooling assembly 180 also includes a return water pipe 184. One end of the return water pipe 184 is connected to the bottom end of the cooling wet film 181, and the other end is connected to the water storage tank 130. It is configured to collect the cooling water left on the cooling wet film 181 and return it to the water storage tank 130. Specifically, by setting up the return water pipe 184, water circulation can be realized, enabling the reuse of cooling water and saving costs. It should be noted that the cooling water mentioned in this embodiment can all be softened water, which can effectively prevent clogging caused by scale formation.

[0053] It should be noted that in this embodiment, the water supply pipe 182 is connected to the bottom of the water storage tank 130 to ensure the water supply effect, while the return water pipe 184 is connected to the top of the water storage tank 130 to prevent the cooling water in the water storage tank 130 from causing untimely return.

[0054] It is worth noting that the present invention can effectively reduce the condensing pressure and the discharge pressure of the compressor 155 by utilizing the water-cooled condenser 152, while the heat dissipation required for the increased cooling capacity at the water-cooled condenser 152 is compensated by the cooling water of the spray circulation through evaporative heat absorption.

[0055] In some embodiments, the water storage tank 130 is further provided with a water inlet 131, and a liquid level sensor 133 is provided inside the water storage tank 130. The liquid level sensor 133 is configured to detect the liquid level height inside the water storage tank 130, and the water inlet 131 is configured to selectively replenish cooling water into the water storage tank 130 according to the liquid level height. Specifically, the water inlet 131 is connected to a water supply pipe, and a water supply electric valve is provided on the water supply pipe. The water supply electric valve is communicatively connected to the liquid level sensor 133, so that it can automatically open according to the liquid level height to realize automatic water replenishment.

[0056] The dual-condensation refrigeration device 100 provided in this embodiment adds a water-cooled condenser 152 to the air-cooled condenser 151 to share some of the condensation heat dissipation. Therefore, it reduces the windward area of ​​the air-cooled condenser 151 in the outdoor air duct 112, thereby reducing the outdoor wind resistance and improving the condensation effect and refrigeration efficiency. Furthermore, this embodiment only requires the additional design of the water-cooled condenser 152; the software operating logic does not need to be upgraded or optimized. It can also be used to upgrade existing refrigeration systems with indirect evaporation AHUs, significantly improving the refrigeration effect, increasing the refrigeration capacity, and enhancing the safety of the refrigeration system.

[0057] The entire cooling system is divided into a wet mode and a dry mode. In wet mode, the water supply pump 183 needs to be turned on, while in dry mode, the water supply pump 183 needs to be turned off. For example, when the outdoor temperature is low (such as in winter), cooling can be achieved solely through the air-to-air heat exchange core 156, with both the compressor 155 and the water supply pump 183 turned off. In winter, when the outdoor temperature is low, the cooling water in the water storage tank 130 is drained to prevent the water from freezing. However, during certain short periods in winter, if the outdoor temperature rises briefly to the point that sufficient cooling cannot be obtained from the outdoor air, the compressor 155 will be turned on, which is the dry mode. When the outdoor temperature is moderate (e.g., spring or autumn), the water supply pump 183 is turned on while the compressor 155 remains off. The fresh air in the outdoor air duct 112 is humidified (water evaporation cooling) through the water supply pipe 182 and the wet film and then cooled to near the wet bulb temperature before exchanging heat with the circulating air in the indoor air duct 111. This is the wet mode. When the outdoor temperature is high (e.g., summer), both the water supply pump 183 and the compressor 155 are turned on at the same time. This is also the wet mode.

[0058] In summary, the dual-condensation refrigeration equipment 100 provided in this embodiment of the present invention has an indoor air duct 111 and an outdoor air duct 112 arranged in the housing 110. At the same time, a water storage tank 130 is arranged in the housing 110, which is filled with cooling water. The air-cooled condenser 151, water-cooled condenser 152, throttle valve 153, evaporator 154 and compressor 155 of the air handling unit 150 are connected end to end by pipes to form a circulation loop. The air-cooled condenser 151 is located at the air outlet of the outdoor air duct 112 and is configured to exchange heat with the air in the outdoor air duct 112 to achieve air-cooled condensation. The water-cooled condenser 152 is located in the water storage tank 130 and is configured to exchange heat with the cooling water in the water storage tank 130 to achieve water-cooled condensation. The evaporator 154 is located at the air outlet of the indoor air duct 111 and is configured to exchange heat with the air in the indoor air duct 111 to cool the air entering the room. Compared with the prior art, this utility model achieves air-cooled condensation and water-cooled condensation effects through air-cooled condenser 151 and water-cooled condenser 152 respectively, which can significantly improve the refrigeration effect, increase the cooling capacity of the equipment, prevent compressor 155 from overload, and improve the safety of the refrigeration system.

[0059] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dual-condensation refrigeration device, characterized in that, include: The enclosure (110) is provided with an indoor air duct (111) and an outdoor air duct (112); A water storage tank (130) is provided inside the housing (110), and the water storage tank (130) is filled with cooling water; An air handling unit (150) is installed inside the housing (110). The air handling unit (150) includes an air-cooled condenser (151), a water-cooled condenser (152), a throttle valve (153), an evaporator (154), and a compressor (155). The air-cooled condenser (151), the water-cooled condenser (152), the throttle valve (153), the evaporator (154), and the compressor (155) are connected end to end by pipes to form a circulation loop. The air-cooled condenser (151) is located at the air outlet of the outdoor air duct (112) and is configured to exchange heat with the air in the outdoor air duct (112). The water-cooled condenser (152) is located in the water storage tank (130) and is configured to exchange heat with the cooling water in the water storage tank (130). The evaporator (154) is located at the air outlet of the indoor air duct (111) and is configured to exchange heat with the air in the indoor air duct (111).

2. The dual-condensation refrigeration equipment according to claim 1, characterized in that, The air handling unit (150) further includes an air-to-air heat exchange core (156), which has a first heat exchange channel and a second heat exchange channel. The first heat exchange channel is connected to the indoor air duct (111), and the second heat exchange channel is connected to the outdoor air duct (112). The air-to-air heat exchange core (156) is configured to exchange heat between the air in the indoor air duct (111) and the air in the outdoor air duct (112).

3. The dual-condensation refrigeration equipment according to claim 1 or 2, characterized in that, The air-cooled condenser (151) is provided with a rotating shaft (157) at its end. The rotating shaft (157) is rotatably disposed in the outdoor air duct (112) so that the air-cooled condenser (151) can adjust the angle between itself and the air outlet direction of the outdoor air duct (112) and adjust the windward area.

4. The dual-condensation refrigeration equipment according to claim 3, characterized in that, The angle between the air-cooled condenser (151) and the air outlet direction of the outdoor air duct (112) is between 0° and 90°.

5. The dual-condensation refrigeration equipment according to claim 1 or 2, characterized in that, An indoor fan (160) is also provided at the air outlet of the indoor air duct (111), and an evaporator (154) is provided on the air inlet side of the indoor fan (160). An outdoor fan (170) is also provided at the air outlet of the outdoor air duct (112), and an air-cooled condenser (151) is provided on the air inlet side of the outdoor fan (170).

6. The dual-condensation refrigeration equipment according to claim 1 or 2, characterized in that, The volume of the water-cooled condenser (152) is smaller than that of the air-cooled condenser (151).

7. The dual-condensation refrigeration equipment according to claim 6, characterized in that, The air-cooled condenser (151) includes a finned coil heat exchanger or a microchannel heat exchanger, and the water-cooled condenser (152) includes a heat exchange coil or a shell-and-tube heat exchanger.

8. The dual-condensation refrigeration equipment according to claim 1, characterized in that, The dual condensation refrigeration equipment also includes a wet film cooling component (180), which is disposed inside the housing (110) and partially disposed at the air inlet of the outdoor air duct (112). The wet film cooling component (180) is connected to the water storage tank (130) and is configured to cool the air in the outdoor air duct (112).

9. The dual-condensation refrigeration equipment according to claim 8, characterized in that, The wet film cooling assembly (180) includes a cooling wet film (181), a water supply pipe (182), and a water supply pump (183). The cooling wet film (181) is disposed in the outdoor air duct (112). One end of the water supply pipe (182) is connected to the top of the cooling wet film (181), and the other end is connected to the water storage tank (130). The water supply pump (183) is disposed on the water supply pipe (182).

10. The dual-condensation refrigeration equipment according to claim 9, characterized in that, The wet film cooling assembly (180) also includes a return water pipe (184), one end of which is connected to the bottom end of the cooling wet film (181) and the other end is connected to the water storage tank (130). It is configured to collect the cooling water left on the cooling wet film (181) and return it to the water storage tank (130).

11. The dual-condensation refrigeration equipment according to claim 8, characterized in that, The water storage tank (130) is also provided with a water inlet. A liquid level sensor (133) is provided in the water storage tank (130). The liquid level sensor (133) is configured to detect the liquid level height in the water storage tank (130). The water inlet is configured to selectively replenish cooling water to the water storage tank (130) according to the liquid level height.

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