Regulating device and fan coil

Abstract

The application discloses a regulating device and a fan coil, which comprises a shunt pipe, a total water inlet is arranged on the shunt pipe, a plurality of water outlets are arranged on both sides of the total water inlet, and each water outlet is connected with a water inlet of a surface cooler; a piston is movably arranged in the shunt pipe and located on both sides of the total water inlet; a traction assembly drives the piston to slide in the shunt pipe and changes the number of the water outlets communicated with the total water inlet. The application sets the total water inlet and the plurality of water outlets on the shunt pipe, controls the position of the piston in the shunt pipe through the traction assembly, changes the number of the water outlets communicated with the total water inlet, and solves the technical problem that the prior art can only adjust the refrigerating capacity of the fan coil by adjusting the rotating speed of the fan.

Description

Technical Field

[0001] This invention relates to the field of air conditioning equipment, and in particular to a regulating device and a fan coil unit. Background Technology

[0002] With the gradual improvement of living standards, central air conditioning systems are being used more and more widely. Currently, the fan coil units in central air conditioning systems require manual control of the thermostat to adjust the fan speed in order to regulate the air volume. In public places such as stations, banks, hotels, and cinemas, there is a large flow of people and frequent climate changes. Existing technology generally changes the cooling capacity by adjusting the fan speed, but directly adjusting the fan speed can easily lead to problems such as the fan coil units becoming too cold or too hot. Summary of the Invention

[0003] In order to solve the technical problem in the prior art that changing the cooling capacity requires adjusting the fan speed, which can easily lead to the fan coil unit being overcooled or overheated, the present invention proposes an adjustment device and a fan coil unit.

[0004] The technical solution adopted in this invention is:

[0005] This invention proposes an adjustment device, comprising:

[0006] A distribution pipe is provided with a main water inlet, and multiple water inlets are provided on both sides of the main water inlet. Each water inlet is connected to one water inlet of the surface cooler.

[0007] The piston is movably installed inside the diversion pipe and located on both sides of the main inlet;

[0008] The traction assembly drives the piston to slide inside the diversion pipe, changing the number of diversion ports connected to the main inlet.

[0009] Furthermore, the traction assembly includes: an electric valve fixed at both ends of the diversion pipe, a spring supported between the electric valve and the piston, the electric valve being connected to the piston via a traction line with controllable extension length, the spring being compressed and the piston moving toward the end of the diversion pipe when the electric valve shortens the traction line, and the piston being connected to the diversion port between the main inlet and the diversion port.

[0010] Furthermore, it also includes: an ambient temperature sensor for detecting the ambient temperature of the fan coil unit, a people sensor for detecting the number of people in the environment where the fan coil unit is located, and a controller for adjusting the number of connected water outlets and the fan speed of the fan coil unit based on the number of people and the difference between the ambient temperature and the target temperature.

[0011] Furthermore, when the detected number of people is 0, the controller controls the traction assembly to close all water outlets and stops the fan coil unit.

[0012] Furthermore, the more people detected and the greater the difference between the ambient temperature and the target temperature, the more water outlets the controller controls the traction component to connect.

[0013] Furthermore, after adjusting the speed of the traction component and the fan coil unit, the controller checks at preset intervals whether the ambient temperature is lower than the target temperature. If so, the fan speed is reduced by a preset speed; otherwise, the fan speed is increased by a preset speed.

[0014] Furthermore, the controller records the fan speed after each fan speed adjustment, as well as the corresponding number of people and the difference between the ambient temperature and the target temperature. During operation, if the number of people and the difference between the ambient temperature and the target temperature are consistent with the records, the speed of the currently running fan is adjusted to the fan speed corresponding to the difference between the number of people and the ambient temperature and the target temperature recorded in the records.

[0015] Furthermore, the regulating device also includes: a water temperature sensor for detecting the inlet and outlet water temperatures of the fan coil unit, and a controller for adjusting the number of connected water outlets of the traction assembly based on the temperature difference between the inlet and outlet water temperatures.

[0016] This invention proposes a fan coil unit, including the aforementioned regulating device.

[0017] Furthermore, the fan coil unit includes: a surface cooler with multiple water inlets and outlets, a water receiving tray located below the surface cooler, and a fan corresponding to the surface cooler.

[0018] Compared with existing technologies, this invention sets a main inlet and multiple branch inlets on the distribution pipe. A traction component controls the position of the piston within the distribution pipe, changing the number of connections between the main inlet and the branch inlets. This solves the technical problem of existing technologies, which can only adjust the cooling capacity of the fan coil unit by adjusting the fan speed, easily leading to excessively high or low temperatures. This invention uses a controller to detect real-time data from a people sensor and an ambient temperature sensor to adjust the fan speed, making the ambient temperature around the fan coil unit closer to the preset temperature. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the first working position according to an embodiment of the present invention;

[0021] Figure 2This is a schematic diagram of the second working position according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the third working position according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the fourth working position according to an embodiment of the present invention;

[0024] Figure 5 This is a flowchart of an embodiment of the present invention;

[0025] 1. Electric valve; 2. Traction line; 3. Diverter pipe; 4. Spring; 5. Main inlet; 6. Diverter outlet; 7. Piston. Detailed Implementation

[0026] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0027] The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0028] With the gradual improvement of living standards, central air conditioning systems are becoming increasingly widely used. Currently, the fan coil units in central air conditioning systems require manual control of the thermostat to adjust the fan speed and thus regulate the airflow. In public places such as stations, banks, hotels, and cinemas, where there is high population flow and frequent climate changes, existing technologies generally adjust the cooling capacity by changing the fan speed. However, directly adjusting the fan speed can easily lead to overcooling or overheating of the fan coil units. This invention proposes an adjustment device with a main inlet and multiple branch inlets on a distribution pipe, located on both sides of the main inlet. A piston is installed inside the distribution pipe, located on both sides of the main inlet. Traction components are installed on both sides of the distribution pipe. By adjusting the position of the pistons through the traction components, some branch inlets can be opened or closed, changing the number of branch inlets connected to the main inlet.

[0029] like Figure 1As shown, this invention proposes an adjustment device, comprising: a diversion pipe 3, pistons 7, and traction components. A main inlet 5 is located above the middle of the diversion pipe 3, and multiple branch inlets 6 are located below the diversion pipe 3. The branch inlets 6 are located on both sides of the main inlet 5, and each branch inlet 6 is connected to one inlet of a surface cooler. Two pistons 7 are installed inside the diversion pipe 3, located on both sides of the main inlet 5. Traction components are located at both ends of the diversion pipe 3, with each traction component controlling one piston 7. The traction components drive the pistons 7 to slide within the diversion pipe 3, changing the number of branch inlets 6 connected to the main inlet 5. The branch inlet 6 located between two pistons 7 is connected to the main inlet 5.

[0030] In a specific embodiment, a main inlet 5 and multiple branch inlets 6 are located at the upper center of the diversion pipe 3. The multiple branch inlets 6 are located below the diversion pipe 3 and are spaced apart on both sides of the main inlet 5. The multiple branch inlets 6 are connected to multiple inlets of the surface cooler (the number of branch inlets 6 is the same as the number of inlets of the surface cooler, which can be selected according to requirements). Two pistons 7 are provided inside the diversion pipe 3, on both sides of the main inlet 5. Traction components are provided at both ends of the diversion pipe 3. Each traction component controls one piston 7. The traction components can drive the pistons 7 to slide inside the diversion pipe 3, thereby changing the number of branch inlets 6 connected to the main inlet 5. The branch inlet 6 between the two pistons 7 is connected to the main inlet 5. The water flow to the other branch inlets 6 is blocked by the pistons 7.

[0031] Specifically, a main inlet 5 is located above the middle of the distribution pipe 3. Seven branch inlets 6 are located below the main inlet 5, respectively on both sides of the main inlet 5. Three branch inlets 6 are spaced apart on the lower left side of the main inlet 5, and four branch inlets 6 are located on the right side of the main inlet 5. The main inlet 5 and the multiple branch inlets 6 are interconnected. Each branch inlet 6 is connected to the inlet of the surface cooler. Water enters from the main inlet 5 and flows into each branch inlet 6, and then into the surface cooler. The main inlet 5 extends partially into the distribution pipe 3 (without affecting the water flow), so that the two pistons 7 are located on both sides of the main inlet 5, preventing the pistons 7 from being on the right or left side of the main inlet 5. The piston 7 on the left side of the main inlet 5 controls the branch inlet 6 on the left side of the main inlet 5, and the piston 7 on the right side of the main inlet 5 controls the piston 7 on the right side of the main inlet 5.

[0032] In a further embodiment, two pistons 7 are provided inside the diversion pipe 3, located on both sides of the main inlet 5. The piston 7 on the left side of the main inlet 5 controls the diversion outlet 6 on the left side of the main inlet 5, and the piston 7 on the right side of the main inlet 5 controls the piston 7 on the right side of the main inlet 5. Traction assemblies are provided at both ends of the diversion pipe 3, which can drive the pistons 7 to slide within the diversion pipe 3. The traction assembly specifically includes: an electric valve 1, a spring 4, and a traction cable 2. The electric valve 1 is installed at both ends outside the diversion pipe 3. One end of the traction cable 2 is connected to the piston 7, and the other end passes through the end of the diversion pipe 3 and is connected to the electric valve 1. Rotating the electric valve 1 can shorten or lengthen the traction cable. A spring 4 is also connected between the end of the diversion pipe and the piston 7 inside the diversion pipe. The spring 4 is elastic, and the position of the piston 7 within the diversion pipe 3 can be changed by the traction assembly. When the electric valve 1 rotates forward, shortening the traction rope, the piston 7 slides towards the end of the diversion pipe 3. The spring 4 between the end of the diversion pipe and the piston 7 maintains the distance between the piston 7 and the end of the diversion pipe 3, preventing the piston 7 from changing position due to water flow impact. When the electric valve 1 rotates in the reverse direction, lengthening the traction line 2, the spring 4 between the end of the diversion pipe and the piston 7 maintains the distance between the piston 7 and the diversion pipe 3, and the piston 7 slides towards the main inlet 5.

[0033] Specifically, the electric valve 1 can be a combination of a motor and a winding drum, with the winding drum mounted on the motor shaft, and the length of the traction line adjusted by the motor rotating forward or backward.

[0034] In a further embodiment, the regulating device of the present invention further includes: an ambient temperature sensor, a number of people sensor, and a controller. The ambient temperature sensor is used to detect the temperature in the environment where the fan coil unit is located. The number of people sensor is used to detect the number of people in the environment where the fan coil unit is located. The controller controls the traction component to adjust the number of water outlets 6 connected to the main water inlet 5 and the fan speed of the fan coil unit according to the difference between the number of people detected by the number of people sensor and the temperature detected by the ambient temperature sensor.

[0035] In a further embodiment, when the number of people detected by the people sensor is 0 in the environment where the fan coil unit is located, the controller controls the traction assembly to close all the water outlets 6 and stop the fan. Specifically, when the number of people detected by the people sensor is 0 in the environment where the fan coil unit is located, it proves that the environment where the fan coil unit is located does not need cooling or heating. In order to avoid the fan coil unit continuing to run when no one is there, resulting in ineffective energy consumption, the controller controls the electric valve 1 of the traction assembly to rotate in the opposite direction, so that the two pistons 7 at the left and right ends of the diversion pipe 3 slide toward the main water inlet 5 until they are blocked by part of the main water inlet 5 in the diversion pipe 3. At this time, there are no water outlets 6 between the two pistons 7 in the left and right ends of the diversion pipe 3, and no water outlet 6 is connected to the main water inlet 5.

[0036] In a further embodiment, the more people detected by the occupancy sensor in the environment where the fan coil unit is located, and the greater the difference between the ambient temperature and the target temperature detected by the ambient temperature sensor, the more water outlets 6 the controller controls the traction assembly to adjust. The controller controls the electric valve 1 of the traction assembly to rotate forward, the traction rope gradually shortens, and the piston 7 is driven by the traction rope to gradually slide towards the end of the diversion pipe 3. The more water outlets 6 between the two pistons 7 in the diversion pipe 3, the more water outlets 6 are connected to the main water inlet 5, thereby increasing the number of water inlet paths for the surface cooler connected to the water outlets 6.

[0037] For example, taking a movie theater as an example, the entrance and exit of the screening room where the fan coil units are located are equipped with people sensors to count the number of people in the screening room. The number of people can be divided into several gradients: 1-51 people in the first gradient, 51-100 people in the second gradient, 101-150 people in the third gradient, and 151-200 people in the fourth gradient. For movie theaters with high personnel flow, the gradient with no change in the number of people for 1 minute is used as the standard. The screening room is also equipped with an ambient temperature sensor, which can be divided into three temperature differences based on the difference between the ambient temperature and the set target temperature: the first temperature difference is 1℃, the second temperature difference is 2℃, and the third temperature difference is 3℃. The people sensors and ambient temperature sensors collect data in real time and send it to a centralized computing controller. The controller estimates the required cooling capacity based on the received people data, ambient temperature, and target temperature (required cooling capacity = number of people × temperature difference × 500W), and then selects the appropriate number of cooling circuits and fan system speed (the initial fan speed is 1500 rpm) based on the required cooling capacity. There are seven water inlets 6, three spaced apart on the left side of the main water inlet 5, and four spaced apart on the right side of the main water inlet 5, from left to right, which are the first to the seventh water inlets. The piston of the regulating device can be in different working positions, such as the first working position, the second working position, the third working position, etc. The cooling capacity is calculated based on the number of people and the temperature difference, and the branch that can achieve this cooling capacity is selected. For example, the maximum cooling capacity of the second working position is 25,000W, and the maximum cooling capacity of the third working position is 50,000W. When there are 40 people and the temperature difference is 1, the required cooling capacity is 500 × 40 × 1 = 20,000W, and the second working position is selected to meet the required cooling capacity. When there are 40 people and the temperature difference is 2, the required cooling capacity is 500 × 40 × 2 = 40,000W, and the third working position is selected to meet the required cooling capacity.

[0038] like Figure 1-4 As shown, when there are no people in the room, the fan is turned off and the piston 7 is in the first working position. Specifically, the two pistons 7 in the diversion pipe 3 are both between the third and fourth water diversion pipes, and all water diversion ports 6 are not flowing.

[0039] When the number of people is at the first gradient and the temperature difference is at the first temperature difference, the piston 7 is in the second working position. Specifically, the left piston 7 in the diversion pipe 3 is between the third and fourth water outlets, and the right piston 7 is between the fourth and fifth water outlets. At this time, the fourth water outlet is connected to the main water inlet 5.

[0040] When the number of people is at the first gradient and the temperature difference is at the second temperature difference, the piston 7 is in the third working position. Specifically, the left piston 7 in the diversion pipe 3 is between the third and fourth water outlets, and the right piston 7 is between the fifth and sixth water outlets. At this time, the fourth and fifth water outlets are connected to the main water inlet 5.

[0041] When the number of people is at the second gradient and the temperature difference is at the first temperature difference, the piston 7 is in the third working position. Specifically, the left piston 7 in the diversion pipe 3 is between the third and fourth water outlets, and the right piston 7 is between the fifth and sixth water outlets. At this time, the fourth and fifth water outlets are connected to the main water inlet 5.

[0042] When the number of people is at the third gradient and the temperature difference is at the second temperature difference, the piston 7 is in the fourth working position. Specifically, the left piston 7 in the diversion pipe 3 is between the second and third water outlets, and the right piston 7 is between the fifth and sixth water outlets. At this time, the third, fourth, and fifth water outlets are connected to the main water inlet 5.

[0043] Similarly, based on the number of people and the temperature difference, the piston 7 is in different working positions, so that its main inlet 5 is connected to a different number of branch inlets 6.

[0044] In a further embodiment, after adjusting the traction component, the controller checks at preset time intervals whether the ambient temperature is lower than the target temperature. If the ambient temperature is lower than the target temperature, the fan speed is reduced by a preset speed; if the ambient temperature is higher than the target temperature, the fan speed is increased by a preset speed to bring the ambient temperature closer to the target temperature. The preset time can be 5 minutes, or can be set according to the time situation.

[0045] Specifically, after adjusting the connection of the fan coil unit to the water outlet 6, check the ambient temperature every 5 minutes to see if it is lower than the target temperature. If the ambient temperature is lower than the target temperature, reduce the fan speed by 10 revolutions each time to bring the ambient temperature closer to the target temperature. (This is in cooling mode.) If the ambient temperature is higher than the target temperature, increase the fan speed by 10 revolutions each time to bring the ambient temperature closer to the target temperature.

[0046] In a further embodiment, the controller adjusts the fan speed based on the difference between the adjusted temperature and the target temperature, and records the result. The next time the same number of people and the same temperature difference are used, the finely adjusted fan speed is used directly.

[0047] The present invention also proposes a fan coil unit, including an adjustment device.

[0048] Specifically, the fan coil unit includes: a surface cooler, a condensate tray, and a fan. The surface cooler has multiple inlets and outlets, and the condensate tray is located below the surface cooler to collect the condensate. The fan is positioned corresponding to the surface cooler. The multiple inlets of the surface cooler are connected one-to-one with the multiple outlets of the regulating device. The number of water inlets to the surface cooler is changed by the regulating device, and the multiple outlets of the surface cooler are ultimately connected to the main outlet.

[0049] like Figure 1 and 5 As shown, in another specific embodiment, temperature sensors are installed at the main inlet 5 of the regulating device and the main outlet of the surface cooler to detect the inlet and outlet water temperatures. The temperature difference between the inlet and outlet water can be divided into a first temperature gradient, a second temperature gradient, and a third temperature gradient. The temperature difference of the first temperature gradient is small, the temperature difference of the third temperature gradient is large, and the temperature difference of the second temperature gradient is between the first and third gradients. When the temperature difference is at the third temperature gradient, less water flow is required, the regulating device is in the third working position, and only two water outlets 6 are open. When the temperature difference is at the second temperature gradient, the left piston 7 is between the first and second water outlets, and the right piston 7 is between the fifth and sixth water outlets. At this time, four water outlets 6 are connected to the main inlet 5. When the temperature difference is at the first temperature gradient, the water distribution valves on the left and right sides are respectively located at the left and right ends of the diversion pipe 3, so that all water outlets 6 are connected to the main inlet 5.

[0050] Compared with existing technologies, this invention sets a main inlet 5 and multiple branch inlets 6 on the distribution pipe 3. By controlling the position of the piston 7 within the distribution pipe 3 through a traction assembly, it changes the number of connections between the main inlet 5 and the branch inlets 6, thus solving the technical problem of existing technologies that can only adjust the cooling capacity of the fan coil unit by adjusting the fan speed. This invention also uses a controller to detect real-time data from a people sensor and an ambient temperature sensor to adjust the fan speed, making the ambient temperature around the fan coil unit closer to the preset temperature.

[0051] It should be noted that the terminology used above is for describing particular embodiments only and is not intended to limit the exemplary embodiments of the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form as well. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0052] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0053] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0054] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0055] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An adjusting device, characterized in that, include: A distribution pipe is provided with a main water inlet, and multiple water inlets are provided on both sides of the main water inlet. Each water inlet is connected to one water inlet of the surface cooler. Two pistons are respectively movably installed inside the diversion pipe and located on both sides of the main inlet; Two traction components are connected to the two pistons one-to-one, and each drives the corresponding piston to slide in the diversion pipe, changing the number of diversion ports connected to the main inlet. The traction components include: electric valves fixed at both ends of the diversion pipe and springs supported between the electric valves and the pistons. The electric valves are connected to the pistons through traction lines with controllable extension lengths. When the electric valves shorten the traction lines, the springs are compressed and the pistons move toward the end of the diversion pipe, and the pistons are connected to the diversion ports between the main inlet and the main inlet.

2. The adjusting device as described in claim 1, characterized in that, Also includes: An ambient temperature sensor detects the ambient temperature of the fan coil unit, a people sensor detects the number of people in the environment where the fan coil unit is located, and a controller adjusts the number of connected water outlets and the fan speed of the fan coil unit based on the number of people and the difference between the ambient temperature and the target temperature.

3. The adjusting device as described in claim 2, characterized in that, When the number of people detected is 0, the controller controls the traction assembly to close all water outlets and stops the fan coil unit.

4. The adjusting device as described in claim 2, characterized in that, The more people detected and the greater the difference between the ambient temperature and the target temperature, the more water outlets are connected by the controller.

5. The adjusting device as described in claim 2, characterized in that, After adjusting the speed of the traction component and the fan coil unit, the controller checks at preset intervals whether the ambient temperature is lower than the target temperature. If so, the fan speed is reduced by a preset speed; otherwise, the fan speed is increased by a preset speed.

6. The adjusting device as described in claim 2, characterized in that, The controller records the fan speed after each fan speed adjustment, as well as the number of people and the difference between the ambient temperature and the target temperature. During operation, if the number of people and the difference between the ambient temperature and the target temperature are consistent with the records, the speed of the currently running fan is adjusted to the fan speed corresponding to the difference between the number of people and the ambient temperature and the target temperature recorded in the records.

7. The adjusting device as described in claim 1, characterized in that, Also includes: A water temperature sensor detects the inlet and outlet water temperatures of the fan coil unit, and a controller adjusts the number of connected water outlets of the traction assembly based on the temperature difference between the inlet and outlet water temperatures.

8. A fan coil unit, characterized in that, Includes the adjustment device as described in any one of claims 1-7.

9. The fan coil unit as described in claim 8, characterized in that, The fan coil unit includes: a surface cooler with multiple water inlets and outlets, a water receiving tray located below the surface cooler, and a fan corresponding to the surface cooler.

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