Energy efficiency measuring device for central air-conditioning machine room

Abstract

The utility model relates to the technical field of central air-conditioning equipment, in particular to an energy efficiency measuring device for a central air-conditioning machine room, which comprises a control box, and a control unit and a heat meter which are arranged in the control box. The chilled water supply pipe is provided with a water supply temperature sensor and a plurality of sets of ultrasonic sensors used for collecting chilled water flow at intervals. The chilled water return pipe is provided with a return water temperature sensor. The heat meter is electrically connected with the control unit. The heat meter collects data of the multiple sets of ultrasonic sensors on the chilled water supply pipe, the water supply temperature sensor and the return water temperature sensor on the chilled water supply pipe and transmits the collected data to the control unit, and the control unit records and analyzes the collected data. The energy efficiency measuring device for the central air-conditioning machine room can realize rapid and accurate data acquisition and analysis calculation, and is higher in working efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of central air-conditioning equipment, in particular to an energy efficiency measuring device for a central air-conditioning room. Background Art

[0002] The central air conditioning system consists of one or more cold and heat source systems and multiple air conditioning systems. This system is different from traditional refrigerant air conditioning and centrally processes air to achieve comfort requirements. The principle of liquid vaporization refrigeration is used to provide the required cooling capacity for the air conditioning system to offset the heat load of the indoor environment; the heating system provides the required heat for the air conditioning system to offset the cooling and heating loads of the indoor environment.

[0003] Energy efficiency measurement of central air-conditioning rooms is of great significance for energy-saving management and performance evaluation. At present, most energy efficiency measurement devices for central air-conditioning rooms are decentralized, which makes data collection more complicated, the analysis and calculation period is longer, and the work efficiency is lower. Utility Model Content

[0004] In order to solve the technical defects mentioned in the above background technology, the purpose of the utility model is to provide an energy efficiency measuring device for a central air-conditioning room.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A central air-conditioning room energy efficiency measuring device comprises a control box, a control unit arranged in the control box and a heat meter; a water supply temperature sensor and a plurality of groups of ultrasonic sensors for collecting the flow of chilled water are arranged at intervals on a chilled water supply pipe, and the plurality of groups of ultrasonic sensors and the water supply temperature sensor are electrically connected to the heat meter; a return water temperature sensor is arranged on a chilled water return pipe, and the return water temperature sensor is electrically connected to the heat meter; the heat meter is electrically connected to the control unit, and the control unit is used to analyze the collected data.

[0007] By adopting the above technical solution, the heat meter collects data from multiple groups of ultrasonic sensors, water supply temperature sensors and return water temperature sensors on the chilled water supply pipe, and transmits the collected data to the control unit, which records and analyzes the collected data. The energy efficiency measurement device for the central air-conditioning room can realize fast and accurate data collection and analysis calculation, and has higher work efficiency.

[0008] Furthermore, multiple groups of the ultrasonic sensors, the water supply temperature sensors, and the return water temperature sensors are electrically connected to the heat meter through corresponding wires, so that data transmission is more stable and the accuracy of collected data is improved.

[0009] Furthermore, the control unit includes a PLC controller and a touch screen. The PLC controller is electrically connected to the heat meter, and the touch screen is built into the control box. The PLC controller is electrically connected to the touch screen, and the touch screen is used to display the collected data in real time, so as to intuitively reflect the working and operating conditions of the equipment.

[0010] Furthermore, the control unit also includes a cloud gateway server, which is electrically connected to the PLC controller to upload data to the cloud and perform further analysis and calculation to achieve a comprehensive evaluation of the energy efficiency of the central air-conditioning room.

[0011] Furthermore, the control unit also includes a power supply, which is used to supply power to the PLC controller and the touch screen. External power distribution cabinets are connected to the power supply through wires to improve stability and safety and ensure normal operation of the equipment.

[0012] Furthermore, each external power distribution cabinet is provided with an electric power meter, which is electrically connected to the PLC controller. The electric power meter is used to collect electric power data and electric quantity data of the central air-conditioning equipment to improve the accuracy of the comprehensive evaluation.

[0013] In summary, the beneficial effects of the utility model are:

[0014] The utility model collects data from multiple groups of ultrasonic sensors, water supply temperature sensors and return water temperature sensors on the chilled water supply pipe through a heat meter, and transmits the collected data to a control unit, which records and analyzes the collected data. The energy efficiency measuring device for a central air-conditioning room can realize fast and accurate data collection and analysis calculation, and has higher work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic structural diagram of an embodiment of a central air-conditioning room energy efficiency measuring device.

[0016] Description of reference numerals in the figures:

[0017] 1. Energy efficiency measuring device for central air-conditioning room; 2. Control box; 31. PLC controller; 32. Touch screen; 33. Cloud gateway server; 34. Power supply; 4. Heat meter; 5. Chilled water supply pipe; 6. Chilled water return pipe; 7. Ultrasonic sensor; 8. Water supply temperature sensor; 9. Return water temperature sensor; 10. Distribution cabinet; 20. Electric power meter; 30. Electric wires; 40. Wires. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0019] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0020] In the description of the utility model, if there is a word description such as "several", it means one or more, and the meaning of "more" is two or more. Greater than, less than, and more than are understood to exclude the number itself, and above, below, and within are understood to include the number itself. If there is a description of the first, second, and third, it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0021] The following is combined with Figure 1 , the embodiments of the utility model are further described in detail.

[0022] A central air conditioning room energy efficiency measuring device 1, such as Figure 1 As shown, it includes a control box 2, a control unit arranged in the control box 2, and a heat meter 4. A water supply temperature sensor 8 and a plurality of groups of ultrasonic sensors 7 for collecting the flow of chilled water are arranged at intervals on the chilled water supply pipe 5. The plurality of groups of ultrasonic sensors 7 and the water supply temperature sensor 8 are electrically connected to the heat meter 4. A return water temperature sensor 9 is arranged on the chilled water return pipe 6, and the return water temperature sensor 9 is electrically connected to the heat meter 4. The heat meter 4 is electrically connected to the control unit, and the control unit is used to analyze the collected data.

[0023] The heat meter 4 collects data from multiple groups of ultrasonic sensors 7, water supply temperature sensors 8 and return water temperature sensors 9 on the chilled water supply pipe 5, and transmits the collected data to the control unit, which records and analyzes the collected data. The central air-conditioning room energy efficiency measuring device 1 can realize fast and accurate data collection and analysis and calculation, and has higher work efficiency.

[0024] In this embodiment, multiple groups of ultrasonic sensors 7, water supply temperature sensors 8, and return water temperature sensors 9 are electrically connected to the heat meter 4 through corresponding wires 40, which makes data transmission more stable and improves the accuracy of data collection.

[0025] The control unit includes a PLC controller 31 and a touch screen 32. The PLC controller 31 is electrically connected to the heat meter 4, and the touch screen 32 is built into the control box 2. The PLC controller 31 is electrically connected to the touch screen 32, and the touch screen 32 is used to display the collected data in real time, so as to intuitively reflect the working and operating conditions of the equipment.

[0026] Preferably, the control unit also includes a cloud gateway server 33, which is electrically connected to the PLC controller 31 to upload data to the cloud, and further analyze and calculate the data remotely to achieve a comprehensive evaluation of the energy efficiency of the central air-conditioning room.

[0027] The control unit also includes a power supply 34, which is used to supply power to the PLC controller 31 and the touch screen 32. The external power distribution cabinet 10 is connected to the power supply 34 through the wire 30 to improve stability and safety and ensure the normal operation of the equipment. The power supply 34 is equipped with a switch structure to facilitate the control of power supply.

[0028] Each external power distribution cabinet 10 is provided with a corresponding electric power meter 20, and the electric power meter 20 is electrically connected to the PLC controller 31. The electric power meter 20 is used to collect electric power data and electric quantity data of the central air-conditioning equipment to improve the accuracy of the comprehensive evaluation.

[0029] The specific working principle can be referred to as follows.

[0030] Step 1: Install an ultrasonic sensor 7 and a water supply temperature sensor 8 on the chilled water supply pipe 5 to collect chilled water flow and temperature data.

[0031] Step 2: Install an electric power meter 20 in the central air-conditioning refrigeration room equipment distribution cabinet 10 to collect electric power data of the central air-conditioning equipment.

[0032] Step 3: Connect the ultrasonic sensor 7, the water supply temperature sensor 8, and the return water temperature sensor 9 to the heat meter 4 in the control box 2 through the wire 40 to collect heat data.

[0033] Step 4: Connect the electric power meter 20 to the RS485 expansion module of the PLC controller 31 in the control box 2 through the wire 40 to collect the electric power data.

[0034] Step 5: Use the wire 30 to power the equipment in the control box 2 to ensure the normal operation of the equipment.

[0035] Step 6: The central air-conditioning room energy efficiency measuring device 1 starts working to collect data and perform analysis and calculation. The collected data is displayed and recorded in real time through the built-in PLC controller 31 and touch screen 32, and the data is uploaded to the cloud through the 4G cloud gateway server 33 for further analysis and calculation, so as to achieve a comprehensive evaluation of the energy efficiency of the central air-conditioning room.

[0036] The central air-conditioning room energy efficiency measuring device 1 can monitor and evaluate the energy efficiency of the central air-conditioning room in real time, provide a comprehensive energy efficiency analysis and evaluation report, and help users optimize the operating parameters of the central air-conditioning room, improve energy efficiency, and save energy.

[0037] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A central air-conditioning room energy efficiency measuring device (1), characterized in that: The invention comprises a control box (2), a control unit arranged in the control box (2), and a heat meter (4); a water supply temperature sensor (8) and a plurality of groups of ultrasonic sensors (7) for collecting the flow of chilled water are arranged at intervals on a chilled water supply pipe (5); the plurality of groups of ultrasonic sensors (7) and the water supply temperature sensor (8) are electrically connected to the heat meter (4); a chilled water return pipe (6) is provided with a return water temperature sensor (9), the return water temperature sensor (9) is electrically connected to the heat meter (4); the heat meter (4) is electrically connected to the control unit, and the control unit is used to analyze the collected data.

2. The central air-conditioning room energy efficiency measuring device (1) according to claim 1, characterized in that: A plurality of groups of ultrasonic sensors (7), water supply temperature sensors (8), and water return temperature sensors (9) are electrically connected to the heat meter (4) via corresponding wires (40).

3. The central air-conditioning room energy efficiency measuring device (1) according to claim 1, characterized in that: The control unit comprises a PLC controller (31) and a touch screen (32); the PLC controller (31) is electrically connected to the heat meter (4); the touch screen (32) is built into the control box (2); the PLC controller (31) is electrically connected to the touch screen (32); and the touch screen (32) is used to display the collected data in real time.

4. The central air-conditioning room energy efficiency measuring device (1) according to claim 3, characterized in that: The control unit also includes a cloud gateway server (33), and the cloud gateway server (33) is electrically connected to the PLC controller (31) to upload data to the cloud.

5. The central air-conditioning room energy efficiency measuring device (1) according to claim 3, characterized in that: The control unit also includes a power supply (34), and the power supply (34) is used to supply power to the PLC controller (31) and the touch screen (32); the external power distribution cabinet (10) is connected to the power supply (34) via an electric wire (30).

6. The central air-conditioning room energy efficiency measuring device (1) according to claim 5, characterized in that: Each external power distribution cabinet (10) is correspondingly provided with an electric power meter (20), and the electric power meter (20) is electrically connected to the PLC controller (31).

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