A fan coil unit energy-saving performance testing system and fan coil unit

Abstract

The utility model provides a fan coil unit energy-saving performance test system and a fan coil unit. The shell of the fan coil unit is provided with a return air port and an air supply port, and the shell is provided with a surface cooler, and the surface cooler is connected with a water supply pipe and a return water pipe. The test system includes an electric two-way valve, an intelligent energy-saving integrated valve and a cooling meter connected in series on the return water pipe. The intelligent energy-saving integrated valve includes a stop valve, a motor, a first temperature sensor and a second temperature sensor. The motor is used to control the opening of the stop valve. The first temperature sensor is arranged at the air supply port, and the second temperature sensor is arranged at the return air port. The test system also includes a control device. The test system can control the fan coil unit through the intelligent energy-saving integrated valve and the electric two-way valve respectively, and compare the performance indicators and energy-saving effects of the fan coil unit under the control of different valves, provide data support for the precise control of the fan coil unit, and help save the energy consumption of the fan coil unit.

Description

Technical Field

[0001] The utility model relates to the technical field of fan coil units, in particular to a fan coil unit energy-saving performance testing system and a fan coil unit. Background Art

[0002] With the continuous development of modern building technology and the improvement of people's living standards, air conditioning systems have become an indispensable and important facility in commercial and residential buildings. As an important part of the air conditioning system, the energy consumption of fan coil units directly affects the operation effect of the air conditioning system. Therefore, it is particularly important to accurately test the energy-saving performance of fan coil units. However, so far, almost all valves on the outlet pipes of fan coil units are controlled by electric two-way valves, which leads to low energy conversion efficiency of fan coil units and large amount of cooling (heating) required indoors. With the increasing global energy shortage and environmental pollution problems, energy conservation and emission reduction have become an important issue for social development. As one of the main sources of building energy consumption, the energy consumption and emission issues of air conditioning systems have attracted much attention.

[0003] Therefore, how to accurately test and control the energy-saving performance of fan coil units and achieve precise control of the cooling (heating) capacity of fan coil units, thereby promoting the green and sustainable development of air-conditioning systems, has important practical significance and broad market prospects. Utility Model Content

[0004] In order to overcome the problems existing in the related technology, one of the purposes of the utility model is to provide a fan coil unit energy-saving performance testing system, which can control the fan coil unit through the intelligent energy-saving integrated valve and the electric two-way valve respectively, and compare the performance indicators and energy-saving effects of the fan coil unit under the control of different valves, provide data support for the precise control of the fan coil unit, and help save the energy consumption of the fan coil unit.

[0005] A fan coil unit energy-saving performance test system, wherein a return air port and an air supply port are arranged in a shell of the fan coil unit, a surface cooler is arranged in the shell, and a smart energy-saving integrated valve is arranged on the return water pipe of the surface cooler. The test system comprises a smart energy-saving integrated valve arranged in series on the return water pipe, an electric two-way valve and a cooling meter, the smart energy-saving integrated valve comprises a stop valve, a motor, a first temperature sensor and a second temperature sensor, the motor is used to control the opening of the stop valve, the first temperature sensor is arranged at the air supply port, and the second temperature sensor is arranged at the return air port;

[0006] The test system also includes a control device, and the intelligent energy-saving integrated valve, the first temperature sensor, the second temperature sensor and the cooling meter are all electrically connected to the control device.

[0007] In a preferred technical solution of the utility model, the intelligent energy-saving integrated valve also includes an adaptive control unit, the input end of the adaptive control unit is electrically connected to the control device, and the output end of the adaptive control unit is electrically connected to the motor.

[0008] In a preferred technical solution of the utility model, the cooling meter is an ultrasonic flow meter, and along the flow direction of the water flow, the cooling meter is arranged downstream of the intelligent energy-saving integrated valve.

[0009] In a preferred technical solution of the utility model, the stop valve is provided with a water inlet end and a water outlet end, and the water inlet end and the water outlet end are both provided with quick-release connectors.

[0010] In a preferred technical solution of the utility model, the quick-release connector includes a first connecting end and a second connecting end which are interconnected, and a locking ring is disposed outside the first connecting end and the second connecting end.

[0011] The second object of the utility model is to provide a fan coil unit, including the fan coil unit energy-saving performance testing system as described above;

[0012] The fan coil unit comprises a shell, in which a surface cooler and a blower are arranged, and the blower is arranged on one side of the surface cooler; an air supply port and an air return port are arranged in the shell.

[0013] In a preferred technical solution of the utility model, a water receiving pan is arranged below the surface cooler, a drain pipe is arranged on one side of the water receiving pan, and one end of the drain pipe passes through the shell and is exposed outside the shell.

[0014] In a preferred technical solution of the utility model, a filter screen is arranged at the return air outlet, and the filter screen includes multiple filter layers stacked together.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a fan coil energy-saving performance test system, the test system includes an electric two-way valve, an intelligent energy-saving integrated valve and a cooling meter arranged on a return pipe, the intelligent energy-saving integrated valve includes a stop valve, a motor, a first temperature sensor and a second temperature sensor, the motor is used to control the opening of the stop valve, the first temperature sensor is arranged at the air supply port, and the second temperature sensor is arranged at the return air port. The test system also includes a control device, and the control device is electrically connected to the first temperature sensor, the second temperature sensor, the electric two-way valve, the intelligent energy-saving integrated valve and the cooling meter. During use, the test system can first use the electric two-way valve to control the chilled water of the fan coil, and then use the intelligent energy-saving integrated valve to control the chilled water. The cooling meter is used to collect the supply and return water temperature and flow of the fan coil, so that the control device can compare the performance and energy consumption of the fan coil under different valve control, and provide data support for the precise control of the fan coil. The test system can be used in different fan coils, has a wide range of applications, and can also be used to actually control the fan coil. By adjusting the chilled water flow in real time through the smart energy-saving integrated valve, the temperature of the space can be more effectively controlled, large temperature fluctuations can be avoided, and comfort can be improved. At the same time, since chilled water can be supplied accurately on demand, energy waste can be avoided, achieving energy-saving effects.

[0017] The present application also provides a fan coil unit, which can accurately adjust the chilled water flow in real time through the above-mentioned testing system, can more effectively control the temperature of the space, avoid large temperature fluctuations, and thus improve comfort; and also avoid energy waste, achieving energy-saving effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the cooperation between the fan coil unit energy-saving performance test system and the fan coil unit provided in the embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the intelligent energy-saving integrated valve provided in the embodiment of the utility model;

[0020] Figure 3 is a schematic diagram of a quick-release connector provided in an embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of the fan coil unit provided in Example 2 of the present utility model.

[0022] Reference numerals:

[0023] 1. Shell; 11. Return air outlet; 12. Supply air outlet; 13. Inner shell; 14. Supply air fan; 15. Electric two-way valve; 2. Surface cooler; 21. Water supply pipe; 22. Return water pipe; 23. Water receiving tray; 3. Intelligent energy-saving integrated valve; 31. Stop valve; 32. Motor; 4. Cooling meter; 41. Drain outlet; 5. First temperature sensor; 6. Second temperature sensor; 61. Second air outlet; 7. Control device; 8. Filter; 9. Quick-release connector; 91. First connecting end; 92. Second connecting end; 93. Locking ring. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0025] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0026] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0027] As an important part of the air-conditioning system, the energy consumption of the fan coil unit directly affects the operation effect of the air-conditioning system. Therefore, it is particularly important to accurately test the energy-saving performance of the fan coil unit. However, so far, almost all valves on the outlet pipes of the fan coil unit are controlled by electric two-way valves, which leads to low energy conversion efficiency of the fan coil unit and large amount of cooling (heating) required indoors. With the increasing global energy shortage and environmental pollution problems, energy conservation and emission reduction have become an important issue for social development. As one of the main sources of building energy consumption, the energy consumption and emission issues of the air-conditioning system have attracted much attention. Therefore, how to accurately test and control the energy-saving performance of the fan coil unit and achieve accurate control of the cooling (heating) capacity of the fan coil unit, thereby promoting the green development and sustainable development of the air-conditioning system, has important practical significance and broad market prospects.

[0028] Based on this, the present application provides a fan coil unit energy-saving performance testing system.

[0029] Example

[0030] like Figure 1-Figure 3 As shown, this embodiment provides a fan coil energy-saving performance test system, wherein a return air port 11 and a supply air port 12 are provided in the shell 1 of the fan coil, and a surface cooler 2 is provided in the shell 1, and a water supply pipe 21 and a return water pipe 22 are connected to the surface cooler 2. The test system includes an intelligent energy-saving integrated valve 3 connected in series to the return water pipe 22, the intelligent energy-saving integrated valve 3 includes a stop valve 31 and a motor 32, and the motor 32 is used to control the opening of the stop valve 31. The intelligent energy-saving integrated valve 3 includes a stop valve 31, a motor 32, a first temperature sensor 5 and a second temperature sensor 6, and the motor 32 is used to control the opening of the stop valve 31. The first temperature sensor 5 is arranged at the supply air port 12, and the second temperature sensor 6 is arranged at the return air port 11. The first temperature sensor 5 is used to collect the supply air temperature, and the second temperature sensor 6 is used to collect the return air temperature. The cold meter is used to collect the flow and temperature of the chilled water. Specifically, the cold meter can be implemented by an ultrasonic flowmeter. Along the flow direction of the water flow, the cold meter 4 is arranged downstream of the intelligent energy-saving integrated valve 3. The test system also includes a control device 7 , which is electrically connected to the intelligent energy-saving integrated valve 3 , the electric two-way valve 15 and the cooling meter 4 .

[0031] Specifically, the motor 32 of the present application is implemented by a brushless motor to improve the service life ratio of the equipment and reduce maintenance costs. Furthermore, the smart energy-saving integrated valve 3 also includes an adaptive control unit, the input end of the adaptive control unit is electrically connected to the control device 7, and the output end of the adaptive control unit is electrically connected to the motor 32. The adaptive control unit uses an adaptive PID algorithm to calculate and process, automatically output a control signal to the motor 32, and adjust the opening of the stop valve 31.

[0032] In actual applications, during the test process, the control device 7 receives data from the first temperature sensor, the second temperature sensor and the cooling meter 4, and uses an adaptive PID algorithm to calculate and process the data, and adjusts the opening of the smart energy-saving integrated valve 3 through the motor 32 to achieve the purpose of accurately controlling the chilled water flow rate.

[0033] The control device of the present application may be a computer, which is used to automatically control the entire system.

[0034] The above-mentioned fan coil unit energy-saving performance test system introduces the intelligent energy-saving integrated valve 3.

[0035] In addition, the system can be used not only for testing, but also for actual control of fan coil units. By adjusting the chilled water flow in real time, the temperature of the space can be more effectively controlled, large temperature fluctuations can be avoided, and comfort can be improved. At the same time, since chilled water can be accurately supplied on demand, energy waste is avoided, achieving energy-saving effects. Moreover, the test system realizes automated and intelligent control through the control device 7, which greatly reduces the intensity and complexity of manual operation and improves efficiency. At the same time, since the system status can be monitored and adjusted in real time, the stability and safety of the system are also enhanced.

[0036] In a more preferred embodiment, the number of the first temperature sensors 5 and the second temperature sensors 6 are both greater than or equal to 2; and the first temperature sensors 5 and the second temperature sensors 6 are both electrically connected to the control device 7 .

[0037] In order to ensure the accuracy and stability of the data, at least two temperature sensors are respectively provided at the air supply port 12 and the return air port 11. These temperature sensors are electrically connected to the control device 7, and transmit the collected temperature data to the control device 7 for processing in real time. After receiving the data, the control device 7 performs comprehensive analysis and processing, and evaluates the performance of the fan coil unit by comparing the temperature difference between the air supply port 12 and the return air port 11, as well as the data consistency between the sensors. If abnormal temperature or inconsistent data is found, the control device 7 will promptly adjust the opening of the intelligent energy-saving integrated valve 3 to optimize the flow of chilled water, thereby ensuring the stable operation of the fan coil unit.

[0038] Multiple temperature sensors can obtain more comprehensive and accurate temperature data, reduce the impact of errors or failures that may exist in a single sensor on the overall data, and thus improve the accuracy and reliability of data collection. The data of multiple temperature sensors can be verified with each other. When a sensor fails or is abnormal, the control device 7 can detect and process it in time to avoid system misjudgment or instability caused by a single sensor failure.

[0039] In another embodiment, two cooling meters 4 may be provided, and the two cooling meters 4 are provided on the water supply pipe 21 and the water return pipe 22 respectively.

[0040] By installing cooling meters 4 on the water supply pipe 21 and the return pipe 22, the water flow and temperature entering and flowing out of the surface cooler 2 can be monitored in real time and accurately. These data are crucial for evaluating the performance and heat exchange efficiency of the fan coil unit. It also helps to more accurately evaluate the performance of the fan coil unit, including heat exchange efficiency, water flow resistance, etc. This helps to detect potential performance problems in a timely manner and optimize the flow of chilled water by adjusting the opening of the smart energy-saving integrated valve 3, thereby improving the performance of the fan coil unit.

[0041] In a more preferred embodiment, the stop valve 31 is provided with a water inlet and a water outlet, and the water inlet and the water outlet are both provided with a quick-release connector 9. Furthermore, the quick-release connector 9 includes a first connecting end 91 and a second connecting end 92 that are interconnected, and a locking ring 93 is provided outside the first connecting end 91 and the second connecting end 92.

[0042] The first connection end 91 and the second connection end 92 of the quick-release connector 9 are used to achieve quick connection with other pipelines. In order to ensure the stability and sealing of the connection, a locking ring 93 is provided outside the first connection end 91 and the second connection end 92. The locking ring 93 can not only effectively lock the connection, but also prevent liquid leakage, thereby ensuring the safety and stability of the entire system.

[0043] In actual application, the staff can quickly connect and disassemble the stop valve 31 and the pipeline through simple operations without using complicated tools, which helps to save time and labor costs. At the same time, the design of the lock ring 93 also enhances the reliability of the connection and reduces the safety risks caused by loose connection or leakage.

[0044] Example 2

[0045] like Figure 4 As shown, this embodiment provides a fan coil unit, including the fan coil unit energy-saving performance testing system as described above;

[0046] The fan coil unit comprises a shell 1 , in which a surface cooler 2 and a blower 14 are arranged. The blower 14 is arranged on one side of the surface cooler 2 ; an air supply port 12 and an air return port 11 are arranged in the shell 1 .

[0047] Furthermore, a water receiving pan 23 is provided below the surface cooler 2. The water receiving pan 23 is used to collect condensed water to prevent water from dripping into the room and keep the environment dry and comfortable. A drain pipe is provided on the water receiving pan 23, and one end of the drain pipe passes through the housing of the fan coil unit to facilitate the discharge of condensed water in the drain pipe.

[0048] Furthermore, a filter 8 is provided at the return air outlet 11, and the filter 8 includes multiple filter layers stacked in layers. The filter 8 can effectively remove dust, particles and other pollutants in the air, ensuring that the quality of the air delivered into the room is excellent, thereby providing users with a fresher and healthier living environment. In actual applications, the multiple filter layers may include a pre-filter 8, a HEPA filter and an activated carbon filter, wherein the pre-filter 8 is used to filter large particles of dust, hair and other pollutants.

[0049] The present application also provides a fan coil unit, which can accurately adjust the chilled water flow in real time through the above-mentioned testing system, can more effectively control the temperature of the space, avoid large temperature fluctuations, and thus improve comfort; and also avoid energy waste, achieving energy-saving effects.

[0050] In summary, the fan coil unit of this embodiment achieves effective filtration of the air entering the fan coil unit by setting the installation cavity and the filter structure 8 at the return air outlet 16 at the bottom of the main body 1, thereby improving the air cleanliness in the use area. At the same time, the design of the installation cavity and the locking structure 7 makes the installation and replacement of the filter structure 8 convenient, reducing the maintenance cost and difficulty. In addition, the fan coil unit also has the advantages of compact structure, beautiful appearance, and complete functions, providing users with a more comfortable and healthy living and working environment.

[0051] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A fan coil unit energy-saving performance test system, wherein a housing (1) of the fan coil unit is provided with a return air port (11) and an air supply port (12), a surface cooler (2) is provided in the housing (1), and a water supply pipe (21) and a water return pipe (22) are connected to the surface cooler (2), characterized in that: The test system comprises an electric two-way valve (15) connected in series on a water return pipe (22), an intelligent energy-saving integrated valve (3) and a cooling meter (4); the intelligent energy-saving integrated valve (3) comprises a stop valve (31), a motor (32), a first temperature sensor (5) and a second temperature sensor (6); the motor (32) is used to control the opening of the stop valve (31); the first temperature sensor (5) is arranged at the air supply port (12); and the second temperature sensor (6) is arranged at the air return port (11); The test system further comprises a control device (7), and the intelligent energy-saving integrated valve (3), the first temperature sensor (5), the second temperature sensor (6) and the cooling meter (4) are all electrically connected to the control device (7).

2. The fan coil unit energy-saving performance testing system according to claim 1, characterized in that: The intelligent energy-saving integrated valve (3) also includes an adaptive control unit, the input end of the adaptive control unit is electrically connected to the control device (7), and the output end of the adaptive control unit is electrically connected to the motor (32).

3. The fan coil unit energy-saving performance testing system according to claim 2, characterized in that: The cooling meter (4) is an ultrasonic flow meter. Along the flow direction of the water flow, the cooling meter (4) is arranged downstream of the intelligent energy-saving integrated valve (3).

4. The fan coil unit energy-saving performance testing system according to any one of claims 1 to 3, characterized in that: The stop valve (31) is provided with a water inlet end and a water outlet end, and both the water inlet end and the water outlet end are provided with a quick-release joint (9).

5. The fan coil unit energy-saving performance testing system according to claim 4, characterized in that: The quick-release connector (9) comprises a first connecting end (91) and a second connecting end (92) which are connected to each other, and a locking ring (93) is disposed outside the first connecting end (91) and the second connecting end (92).

6. A fan coil unit, characterized in that: A fan coil unit energy-saving performance testing system comprising any one of claims 1 to 5; The fan coil unit comprises a shell (1), in which a cooler (2) and a blower (14) are arranged, and the blower (14) is arranged on one side of the cooler (2); and an air supply port (12) and an air return port (11) are arranged in the shell (1).

7. The fan coil unit according to claim 6, characterized in that: A water receiving pan (23) is provided below the surface cooler (2), a drainage pipe is provided on one side of the water receiving pan (23), and one end of the drainage pipe passes through the shell (1) and is exposed outside the shell (1).

8. The fan coil unit according to claim 6, characterized in that: A filter screen (8) is arranged at the return air outlet (11), and the filter screen (8) comprises a plurality of filter layers stacked together.

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