Portable air conditioner energy efficiency evaluation box

Abstract

The utility model discloses a portable air conditioner energy efficiency evaluation box comprising a box body, and a lower layer installation cavity and an upper layer installation cavity are formed in the box body; a power supply module, an on-site acquisition module, an energy efficiency calculation module, a first communication module and a second communication module are arranged in the lower-layer mounting cavity of the box body; a human-computer interface unit is arranged in the upper mounting cavity of the box body; the electric quantity acquisition unit, the flow acquisition unit, the temperature acquisition unit, the temperature and humidity acquisition unit and the pressure acquisition unit are arranged outside the box body and are connected with the field acquisition module; the energy efficiency calculation module calculates an air conditioner energy efficiency value according to the air conditioner operation data acquired by the field acquisition module, and the human-computer interface unit is used for displaying the air conditioner energy efficiency value; the first communication module is used for providing an internet access function, and the second communication module is used for transmitting data to a cloud. The energy efficiency evaluation box has the advantages that the integration level is improved, the whole energy efficiency evaluation box is light and easy to carry, and the host and the pipeline cannot be damaged in the installation and measurement processes.

Description

Technical Field

[0001] The utility model relates to the field of energy efficiency evaluation for the energy-saving transformation of central air conditioners, and particularly relates to a portable air conditioner energy efficiency evaluation box. Background Art

[0002] Under general air-conditioning conditions, the rated energy efficiency of water-cooled chillers is between 0.60 and 0.8 kW / TON, but the actual operation of water-cooled chillers fluctuates within a large energy efficiency range of 0.25 - 1.0 kW / TON. The operating power consumption = cumulative cooling capacity × average energy efficiency. Under the condition of the same cumulative required cooling capacity, the level of average energy efficiency determines the level of equipment operating costs. However, the actual operating performance of the equipment generally has a low operating energy efficiency, and the energy efficiency fluctuates and deviates greatly under different operating conditions and equipment maintenance states, indicating a large energy-saving space. Therefore, the development of an energy efficiency evaluation box provides great reference significance for the energy-saving transformation, optimized operation, and energy efficiency improvement of central air conditioners.

[0003] Currently, most of the energy efficiency detection methods for chillers on-site are to use different measuring instruments to detect and record various parameters: water flow rate, water temperature value, equipment power consumption, etc., and then summarize the data through manual operation and with the help of a computer for calculation. There is no dedicated device or independent unit to diagnose the energy efficiency performance of chillers in real time and make judgments.

[0004] Currently, the typical methods for energy efficiency diagnosis and analysis of chillers are as follows:

[0005] 1. Experienced professional engineers analyze and evaluate the operating parameters of the equipment to obtain rough empirical analysis results;

[0006] Some building automation integration systems detect cooling capacity and power consumption online through sensors and other detection boxes and meters. Although they can also obtain the results of monitoring the energy efficiency of the equipment, they do not perform real-time energy efficiency diagnosis on chillers. At the same time, because there are very few building automation systems with this function on the market that are in normal use, and because the building automation system is huge and costly, it belongs to a system integration project.

[0007] There is an urgent need to provide a solution for energy efficiency performance evaluation, diagnosis, and discrimination, which has the characteristics of convenient data source, intuitive and reliable evaluation results. Content of the Utility Model

[0008] In order to overcome the deficiencies of the prior art, the purpose of the present utility model is to provide a portable air conditioner energy efficiency evaluation box, which can measure the energy efficiency values of central air conditioner chilled water hosts of various general brands and diagnose and discriminate the energy efficiency performance, and has additional functions such as local energy efficiency box process interface display, real-time data query, historical data query, and direct USB port export, cloud process interface display, real-time display of energy efficiency data, real-time viewing of the real-time values of each instrument, curve display, historical query, historical data export, and printing; further improve the integration degree, and the entire energy efficiency evaluation box is lightweight, easy to carry, and the installation and measurement processes will not damage the host and pipelines.

[0009] The purpose of the present utility model is achieved by adopting the following technical solutions:

[0010] A portable air conditioner energy efficiency evaluation box, characterized in that it includes a box body, and a lower-layer installation cavity and an upper-layer installation cavity are formed inside the box body;

[0011] A power module, a field acquisition module, an energy efficiency calculation module, a first communication module, and a second communication module are arranged in the lower-layer installation cavity of the box body; a human-machine interface unit is arranged in the upper-layer installation cavity of the box body; an electric quantity acquisition unit, a flow acquisition unit, a temperature acquisition unit, a temperature and humidity acquisition unit, and a pressure acquisition unit externally arranged on the box body are also included;

[0012] The electric quantity acquisition unit, the flow acquisition unit, the temperature acquisition unit, the temperature and humidity acquisition unit, and the pressure acquisition unit are respectively connected to the field acquisition module in a detachable manner; the field acquisition module and the energy efficiency calculation module are connected by a signal line;

[0013] The energy efficiency calculation module calculates the air conditioner energy efficiency value through the air conditioner operation data obtained by the field acquisition module, and the human-machine interface unit is used to display the air conditioner energy efficiency value; the first communication module is used to provide an Internet access function, and the second communication module is used to transmit data to the cloud.

[0014] In an optional implementation manner, the electric quantity acquisition unit, the flow acquisition unit, the temperature acquisition unit, the temperature and humidity acquisition unit, and the pressure acquisition unit are respectively detachably connected to the field acquisition module through a 485 bus and an aviation plug-in component;

[0015] The aviation plug-in component includes an aviation quick connector and an aviation quick plug; one side of the aviation quick connector is fixed on the surface of the box body, and the other side extends into the lower-layer installation cavity and is connected to the field acquisition module;

[0016] The electric quantity acquisition unit, the flow acquisition unit, the temperature acquisition unit, the temperature and humidity acquisition unit, and the pressure acquisition unit are respectively connected to the aviation quick plug in a daisy-chain manner through a 485 bus.

[0017] In an alternative embodiment, the power acquisition unit acquires current through a Rogowski coil current transformer or a clamp-on current transformer;

[0018] The power acquisition unit directly adsorbs on the three-phase power supply of the circuit breaker through a magnetic steel wire, or clamps on the three-phase power supply through alligator clips to acquire voltage.

[0019] In an alternative embodiment, there are also several tensioners;

[0020] The flow rate acquisition unit has a flow rate detection probe and a temperature detection probe, and both the flow rate detection probe and the temperature detection probe are external-mounted detection probes; the flow rate detection probe and the temperature detection probe are respectively attached to the pipeline to be measured through tensioners.

[0021] In an alternative embodiment, the temperature acquisition unit is a temperature transmitter, the temperature transmitter is designed with digital display integrated, the temperature acquisition unit has an external-mounted probe, and the external-mounted probe of the temperature acquisition unit is attached to the pipeline to be measured through a tensioner.

[0022] In an alternative embodiment, the temperature and humidity acquisition unit is a temperature and humidity transmitter, and the temperature and humidity transmitter is an outdoor waterproof temperature and humidity transmitter; the temperature and humidity transmitter has a probe and a waterproof cover, and the probe of the temperature and humidity transmitter is arranged inside the waterproof cover.

[0023] In an alternative embodiment, the box body includes a box cover and a box body, and the lower installation cavity and the upper installation cavity are formed inside the box body; one side of the box cover is hinged to the box body, so that the box cover can be turned relative to the box body to cover or open; a lock assembly is arranged outside the connection between the box cover and the box body, and the lock assembly is used to lock the box cover and the box body in the closed state.

[0024] In an alternative embodiment, a handle is installed on the outside of the box body, so that the box body can be used as a suitcase in the closed state, which is convenient for carrying and moving; casters are installed on the outside of the box body, and the casters and the handle are arranged on opposite sides of the box body; a telescopic handle is arranged at the bottom of the box body, and the telescopic handle can be retracted into the bottom of the box body or extended to the opposite side of the casters.

[0025] In an alternative embodiment, the energy efficiency calculation module can automatically eliminate data that does not meet the requirements by setting thresholds for flow rate, temperature and power.

[0026] In an alternative embodiment, the human-machine interface unit has functions such as air-conditioning energy efficiency value unit conversion, curve viewing, historical record query and auxiliary parameter viewing.

[0027] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0028] 1. The portable air conditioner energy efficiency evaluation box of the present utility model adopts a suitcase-type structure, with a double-layer layout inside. The human-machine interface unit is embedded in the front panel of the upper layer of the box body, and the power module, on-site acquisition module, energy efficiency calculation module, first communication module and second communication module are fixed on the lower layer, making full use of the internal space of the box body; the on-site acquisition module simultaneously has the functions of power measurement, flow measurement, temperature measurement, temperature and humidity measurement and pressure measurement, with high integration, convenient wiring and further optimization of the internal space of the box body. The 4G Internet access function and the function of packing and uploading on-site data and air conditioner energy efficiency data to the cloud are realized through the first communication module and the second communication module, which is convenient for systematic storage and management of data. Rubber handles are installed on the upper part and both side surfaces of the outer side of the box body, which can be used as a suitcase when not in use, facilitating carrying and moving. Telescopic handles and casters are installed on the side surface of the box body, facilitating pulling and moving. The air conditioner energy efficiency detection box of the present utility model is highly integrated, the whole energy efficiency evaluation box is light and easy to carry, and the installation and measurement processes will not damage the host and pipelines.

[0029] 2. When installing the flow measurement unit and the inlet and outlet water temperature measurement unit during the measurement process of the portable air conditioner energy efficiency evaluation box of the present utility model, there is no need to stop the machine. After the measurement is completed, it can be quickly removed. The whole process is convenient and fast, and has no impact on the operation of the host.

[0030] 3. The energy efficiency calculation module of the portable air conditioner energy efficiency evaluation box of the present utility model uses data processing means to filter out too low and too high energy efficiency measurement value noises, eliminate interference and the interference of the start-up and shutdown stages on the energy efficiency value to the greatest extent, and reflect the average energy efficiency value of the host as accurately as possible.

[0031] 4. The portable air conditioner energy efficiency evaluation box of the present utility model is applicable to different chilled water hosts used on the market. The measurement process is simple and fast, and the energy efficiency value and energy efficiency evaluation result of the chilled water host can be directly obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a perspective view of the portable air conditioner energy efficiency evaluation box of Embodiment 1;

[0033] Figure 2 It is a schematic internal structure diagram of the lower accommodation cavity of the portable air conditioner energy efficiency evaluation box of Embodiment 1;

[0034] Figure 3 It is a schematic internal structure diagram of the upper accommodation cavity of the portable air conditioner energy efficiency evaluation box of Embodiment 1;

[0035] Figure 4 It is a schematic diagram of the principle of the portable air conditioner energy efficiency evaluation box of Embodiment 1;

[0036] Figure 5 Field test layout block diagram of the portable air conditioner energy efficiency evaluation box in Embodiment 1;

[0037] Figure 6 Schematic diagram of the cloud display page of the evaluation system of the portable air conditioner energy efficiency evaluation box in Embodiment 1;

[0038] Figure 7 Schematic diagram of the cloud energy efficiency record page of the evaluation system of the portable air conditioner energy efficiency evaluation box in Embodiment 1;

[0039] Figure 8 Schematic diagram of exporting energy efficiency record data of the evaluation system of the portable air conditioner energy efficiency evaluation box in Embodiment 1.

[0040] In the figure: 10, the box body; 11, the upper installation cavity; 111, the human-machine interface unit; 12, the lower installation cavity; 121, the power module; 122, the on-site acquisition module; 123, the energy efficiency calculation module; 124, the first communication module; 125, the second communication module; 126, the aviation plug-in component; 13, the box cover; 14, the box body; 15, the lock component; 16, the telescopic handle; 20, the power consumption acquisition unit; 30, the flow rate acquisition unit; 40, the temperature acquisition unit; 50, the temperature and humidity acquisition unit. Specific implementation manners

[0041] Next, in combination with the drawings and specific implementation manners, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment can be purchased from the market. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation to the present application.

[0042] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined precisely.

[0043] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "communicated", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or can be connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0044] The terms "first", "second", etc. in the description, claims, and the above drawings of the present application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0045] Embodiment 1:

[0046] Please refer to Figure 1-8 , this embodiment provides a portable air conditioner energy efficiency evaluation box including a box body 10. The box body 10 adopts a suitcase-type structure, and a lower-layer installation cavity 12 and an upper-layer installation cavity 11 are formed inside the box body 10;

[0047] The upper-layer installation cavity 11 of the box body 10 is embedded with a human-machine interface unit 111; the human-machine interface unit 111 has a display panel, and the display panel is used to display digital content; a power module 121, a field acquisition module 122, an energy efficiency calculation module 123, a first communication module 124, and a second communication module 125 are arranged in the lower-layer installation cavity 12 of the box body 10; the upper and lower layers are arranged to make full use of the internal space of the chassis. A support frame can be arranged in the box body 10 to fix each module part. The support frame can be made of a composite material with pressure-bearing and shock-absorbing properties to prevent the plug joints from loosening due to the shaking of the air conditioner energy efficiency evaluation box during the moving process.

[0048] It also includes a power consumption acquisition unit 20, a flow acquisition unit 30, a temperature acquisition unit 40, a temperature and humidity acquisition unit 50, and a pressure acquisition unit externally arranged on the box body 10; measurement devices such as the power consumption acquisition unit 20, the flow acquisition unit 30, the temperature acquisition unit 40, the temperature and humidity acquisition unit 50, and the pressure acquisition unit are placed on-site and led back to the evaluation box through a centralized power supply and acquisition method.

[0049] The power collection unit 20, flow rate collection unit 30, temperature collection unit 40, temperature and humidity collection unit 50, and pressure collection unit are respectively connected to the on-site collection module 122 in a detachable manner through a 485 bus using an aviation connector assembly 126; the on-site collection module 122 is connected to the energy efficiency calculation module 123 through a signal line;

[0050] The on-site collection module 122 of this embodiment simultaneously has the functions of power measurement, flow rate measurement, temperature measurement, temperature and humidity measurement, and pressure measurement, with high integration, convenient wiring, and further optimized the internal space of the cabinet 10. The energy efficiency calculation module 123 calculates the air conditioner energy efficiency value from the operation data obtained by the on-site collection module 122, and the air conditioner energy efficiency value is displayed through the human-machine interface unit 111; the first communication module 124 is a router with 4G Internet access function, and is used for Internet access through the first communication module 124; the second communication module 125 is a data cloud WEB gateway, and the on-site data and air conditioner energy efficiency data are packaged and uploaded to the cloud through the gateway.

[0051] Specifically, the aviation connector assembly 126 includes an aviation quick connector and an aviation quick plug; one side of the aviation quick connector is fixed on the surface of the cabinet 10, and the other side extends into the lower installation cavity 12 and is connected to the on-site collection module 122; the power collection unit 20, flow rate collection unit 30, temperature collection unit 40, temperature and humidity collection unit 50, and pressure collection unit are respectively connected to the aviation quick plug in a daisy-chain manner through a 485 bus, so as to ensure the reliability and stability of the communication line.

[0052] The flow rate collection unit 30 has a flow rate detection probe and a temperature detection probe, and both the flow rate detection probe and the temperature detection probe are externally attached detection probes; the flow rate detection probe and the temperature detection probe are respectively attached to the measured pipeline through a tensioner. The flow rate collection unit 30 of this embodiment uses a patch-type flow sensor. During use, there is no need for fire welding, no need to damage the pipeline waterway, and even no need to stop the host. Only need to set parameters such as the pipeline material, inner and outer diameters, and fluid medium on the ultrasonic energy meter, and it will automatically calculate the installation distance. According to this distance, the upstream and downstream induction patches of the ultrasonic flow sensor are attached to the pipeline, and then tightened with a cloth belt or a tensioner.

[0053] The temperature acquisition unit 40 is a temperature transmitter, which is designed with digital display integrated. The temperature acquisition unit 40 has an external probe, and the external probe of the temperature acquisition unit 40 is attached to the pipeline to be measured through a tensioner. Specifically, the temperature acquisition unit 40 uses a patch-type platinum resistance temperature sensor. Apply the randomly attached coupling agent with a thickness of 2-3 mm on the signal generating body of the sensor, and then stick the sensor tightly on the pipe wall. There should be no air or gravel between the sensor and the pipe wall. After the sensor is positioned, fasten it with a cloth belt or a tensioner. The whole installation process can be completed without using fire or welding.

[0054] The power acquisition unit 20 uses a dedicated clamp-on current transformer or Rogowski coil current transformer to collect current. For voltage acquisition, it can be directly adsorbed on the three-phase power supply of the loop switch with a magnetic steel wire, or it can be clamped on the three-phase power supply in the way of alligator clips.

[0055] Since most power inlet switches are fixed and installed with hexagonal screws, it is the most convenient to directly adsorb the magnetic steel wire on the three-phase power supply of the loop switch. If the space is not conducive to operation, the alligator clip method can also be used to clamp on the three-phase power supply. The current can be collected at the upper or lower end of the switch, depending on the on-site space. For a clamp-on current transformer, only need to open the opening of the current transformer and clamp the power inlet wire. For a Rogowski coil, only need to open the opening of the Rogowski coil, wind it around the power inlet wire for one circle, and then lock it. The whole process is easy and simple, without the need to remove screws and without the need to stop the main machine.

[0056] Attention should be paid to the phase sequence of the three-phase voltage and current during voltage and current acquisition. The ABC three phases should correspond one by one. Attention should also be paid to the direction of the current during current acquisition, P1 in and P2 out or the direction of the arrow on the Rogowski coil, and install it in the arrow direction from top to bottom.

[0057] The other parts of this energy efficiency detection box are mainly movable measurement sensor probe devices, whose cable lengths are relatively long and need to be installed on relevant equipment of the on-site air-conditioning main unit during measurement, such as the three-phase current and power transformer, the upstream and downstream induction probe parts of the ultrasonic flow sensor, and the chilled water inlet and outlet temperature probe parts. These parts are separated from the energy efficiency detection instrument when not in use and need to be connected to the energy efficiency detection box when in use. All connection parts between these probe devices and the energy efficiency detection box use fast aviation plugs. The connection of the whole sensor does not require tools such as screwdrivers and wrenches, and the plug-type connection is adopted throughout the process to achieve fast disassembly and assembly, greatly improving the work efficiency.

[0058] The energy efficiency detection box of the portable central air-conditioning chilled water host in this embodiment adopts a box design. The box body 10 includes a box cover 13 and a box body 14. The lower installation cavity 12 and the upper installation cavity 11 are formed inside the box body 14. One side of the box cover 13 is hinged to the box body 14, so that the box cover 13 can be turned relative to the box body 14 to cover or open. A lock assembly 15 is arranged outside the connection between the box cover 13 and the box body 14, and the box cover 13 and the box body 14 can be locked in the closed state through the lock assembly 15.

[0059] Rubber handles are installed above and on both side surfaces of the outer side of the box body 14. When not in use, in the closed state, the box body 10 can be used as a suitcase, which is convenient for carrying and moving. When measurement is required, only the plug of the probe needs to be inserted into the corresponding connector at the lower part of the box body 10, and each sensor probe part is installed at the corresponding position, such as Figure 5 All the on-site detection layout block diagrams shown are acceptable.

[0060] Caster wheels are installed on the outer side of the box body 14. The caster wheels and the handles are arranged on opposite sides of the box body 14. A telescopic handle 16 is arranged at the bottom of the box body 14. The telescopic handle 16 can be retracted into the bottom of the box body 14 or extended to the opposite side of the caster wheels, which is convenient for pulling and moving. Measuring equipment, cable tools, etc. are uniformly placed through a separate trolley case. It is equivalent to going out for measurement, and only this energy efficiency detection box and the measurement equipment toolbox need to be brought.

[0061] In some preferred embodiments, in addition to having the function of measuring the energy efficiency of the central air-conditioning host, this energy efficiency detection box also has several other auxiliary functions. The operator can operate or view on the man-machine interface unit 111, such as functions of real-time operation page, curve viewing, historical record query, and viewing other auxiliary parameters.

[0062] Among them, the curve viewing function is to view the trends of energy efficiency value, cooling capacity, power consumption, temperature, and flow rate in the form of curves, which more intuitively and vividly shows the change status and trends of these parameters during the measurement period.

[0063] For historical record query, it can support inputting the start and end times to query the measurement historical records within this time period, or it can also trace back from the current time to query the recent several historical records. And it supports exporting in formats such as xls, cvs, etc. The exported files can be stored in a USB flash drive for archiving or printing output.

[0064] Viewing of other auxiliary parameters includes measured inlet / outlet water temperature, flow rate, three-phase current / voltage, frequency, active power, reactive power, power factor, cooling capacity, etc. The operator can have a more comprehensive understanding of the host status through these parameters.

[0065] Please refer to Figure 5 the on-site detection layout block diagram shown in the figure. The operation process of the energy efficiency detection box in this embodiment is as follows:

[0066] First, connect each sensor to the energy efficiency detection box. It uses quick plugs. Just connect them one by one according to the text prompts on the energy efficiency evaluation box. Before starting to detect the host, it is necessary to perform metrological calibration on the energy efficiency detection box. Specifically:

[0067] (1) Calibrate the temperature sensors of the temperature acquisition unit 40. Press the two temperature sensors closely against the pipe wall, apply thermal conductive silicone on the contact surface between the sensor and the pipe wall, and observe whether the temperature readings of the two temperature sensors are the same on the portable energy efficiency detection box. Compare whether this temperature reading is the same as the data on the panel of the human-machine interface unit 111. If they are all the same, it proves that the temperature sensors are working properly.

[0068] (2) Press the flow induction probe of the ultrasonic flow sensor of the flow acquisition unit 30 against the pipe wall. There is water flowing in the pipe. Adjust the position of the induction probe so that the two probes are on the same horizontal plane and are separated by a distance of 5-8 cm. Observe the instrument panel of the ultrasonic flow sensor. If there is a value, it means that the ultrasonic sensor is working properly.

[0069] (3) Clamp the three-phase clamp-on current transformers of the power acquisition unit 20 on the three power supply inlets of the host respectively, and observe whether there is current display on the human-machine interface unit 111 of the energy efficiency detection box or on the instrument locally. If there is a display, compare it with the working current of the host to see if the values are the same. If they are not the same, check whether the current transformation ratio is not set correctly according to the actual situation. If they are the same, it proves that the power detection module is normal.

[0070] If all of these are normal, the next step of the detection work can be started. If a certain item still cannot work properly after adjustment, then it is necessary to replace or repair the detection unit and repeat the above calibration work until all these detection sensors are working properly.

[0071] Install the energy meter temperature probe on the pipe walls of the chilled water inlet / outlet of the central air-conditioning chiller respectively. It should be noted that it needs to be closely attached, with thermal conductive silicone applied in the middle, and fastened with a cloth belt or a tensioner. The installation of the temperature sensing part is then completed. Then, input or select the inner and outer diameters of the chilled water pipe, the pipe wall material, the fluid medium, etc. one by one in the menu of the ultrasonic flow sensor. The ultrasonic instrument will automatically calculate an installation distance, which is the installation distance between the upstream probe and the downstream probe of the ultrasonic flow sensor. Install the two probes on the chilled water pipe wall according to this distance. The installation requirements are similar to those of the temperature sensor, and it needs to be closely attached. Apply the matching contact agent to the contact surface between the pipe wall and the sensor. The two probes need to be installed on the same horizontal surface. Select the item of viewing the signal strength in the menu on the instrument. If the signal strength value > 60, the ultrasonic flow sensor can work normally. If it does not reach 60, the installation position needs to be adjusted or the outer wall of the pipe needs to be slightly polished.

[0072] After the installation is completed, the energy efficiency measurement work can be carried out. Generally, according to different hosts, the detection time is generally 0.5 hours - 2 hours. It is recommended not to be less than 0.5 hours, otherwise the sample is too small, which may cause inaccurate detection. Connect the power supply of the energy efficiency box, and the energy efficiency detection box will automatically start running to detect the energy efficiency. During this period, no manual intervention by personnel is required, and all are automatically run by the detection box.

[0073] All parameters during the detection process will be stored in the industrial control computer built into the energy efficiency detection box and transmitted to the cloud system in real time through the second communication module 125. The data can be exported directly by inputting the time node when needed.

[0074] Another problem to be solved by the air-conditioning energy efficiency evaluation box in this embodiment is the precise processing of the actual detected average energy efficiency value. During the actual operation and measurement process, the power consumption and refrigeration of the host are both constantly changing processes. With different conditions such as the cooling demand, load change, and ambient temperature and humidity, the energy efficiency of the chiller is actually in a constantly changing state. This results in the real-time energy efficiency value obtained by measurement being an unstable value that is constantly changing, with limited reference significance and practical use, and also causes inaccuracy of the average energy efficiency value.

[0075] Moreover, during the process of the host being loaded or unloaded, or during the start-up and operation of adjacent host water pumps, it may cause a sudden increase in water volume or a sudden change in electrical load. Since the change in temperature is a relatively gentle process, a sudden change in the state will cause the energy efficiency value calculated by E = P / Q to be too large or too small. If this part of the energy efficiency value is included in the calculation, it will cause a certain degree of distortion compared with the actual average energy efficiency value. In this embodiment, an algorithm is built into the energy efficiency calculation module 123, and thresholds for flow rate, temperature, and power are set. When the change rate of the flow rate, temperature, or power is too fast and exceeds the thresholds of these physical quantities, the calculation module will automatically process these data separately and not include them in the calculation of the average energy efficiency. Only when these measurement parameters return below the thresholds and are in a normal working state will they be included in the measurement of the average energy efficiency. Although some components and embodiments of the present application have been illustrated and described, many modifications and changes can be conceived by those skilled in the art without actually departing from the scope and spirit of the claims (for example, changes in the size, dimensions, structure, shape and proportion, installation arrangement, material use, color, orientation, etc. of each component).

[0076] Finally, it should be noted that the above embodiments are only the preferred embodiments of the present invention, and the scope of protection of the present invention cannot be limited by this. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. A portable air conditioner energy efficiency evaluation box, characterized in that: It comprises a box body, wherein a lower installation cavity and an upper installation cavity are formed inside the box body; The lower installation cavity of the box body is provided with a power module, a field collection module, an energy efficiency calculation module, a first communication module and a second communication module; the upper installation cavity of the box body is provided with a human-machine interface unit; and also includes an electric quantity collection unit, a flow collection unit, a temperature collection unit, a temperature and humidity collection unit and a pressure collection unit externally disposed in the box body; The power collection unit, flow collection unit, temperature collection unit, temperature and humidity collection unit, and pressure collection unit are respectively connected to the field collection module in a detachable manner; the field collection module is connected to the energy efficiency calculation module through a signal line; The energy efficiency calculation module calculates the air conditioner energy efficiency value through the air conditioner operation data obtained by the on-site collection module, and the human-machine interface unit is used to display the air conditioner energy efficiency value; the first communication module is used to provide Internet access function, and the second communication module is used to transmit data to the cloud.

2. A portable air conditioner energy efficiency evaluation box according to claim 1, characterized in that: The power collection unit, flow collection unit, temperature collection unit, temperature and humidity collection unit, and pressure collection unit are detachably connected to the field collection module through a 485 bus and an aviation connector assembly; The aviation connector assembly includes an aviation quick connector and an aviation quick connector plug; one side of the aviation quick connector is fixed to the surface of the box, and the other side extends into the lower installation cavity to connect with the field acquisition module; The power collection unit, flow collection unit, temperature collection unit, temperature and humidity collection unit, and pressure collection unit are respectively connected to the aviation quick connector in a hand-in-hand manner via a 485 bus.

3. A portable air conditioner energy efficiency evaluation box according to claim 1, characterized in that: The power collection unit collects current through a Rogowski coil current transformer or a clamp current transformer; The power collection unit is directly adsorbed on the three-phase power supply of the loop switch through a magnetic steel wire, or clamped on the three-phase power supply through an alligator clip to collect voltage.

4. A portable air conditioner energy efficiency evaluation box according to claim 1, characterized in that: Also includes a number of tensioners; The flow acquisition unit has a flow detection probe and a temperature detection probe, and both the flow detection probe and the temperature detection probe are external detection probes; the flow detection probe and the temperature detection probe are respectively attached to the measured pipeline through a tensioner.

5. A portable air conditioner energy efficiency evaluation box according to claim 4, characterized in that: The temperature acquisition unit is a temperature transmitter, which is a digital display integrated design. The temperature acquisition unit has an external probe, and the external probe of the temperature acquisition unit is attached to the measured pipeline through a tensioner.

6. A portable air conditioner energy efficiency evaluation box according to claim 1, characterized in that: The temperature and humidity acquisition unit is a temperature and humidity transmitter, and the temperature and humidity transmitter is an outdoor waterproof temperature and humidity transmitter; the temperature and humidity transmitter has a probe and a waterproof cover, and the probe of the temperature and humidity transmitter is arranged inside the waterproof cover.

7. A portable air conditioner energy efficiency evaluation box according to claim 1, characterized in that: The box body includes a box cover and a box body, and the lower installation cavity and the upper installation cavity are formed inside the box body; one side of the box cover is hinged to the box body, so that the box cover can be flipped relative to the box body to be closed or opened; a locking component is provided on the outside of the connection between the box cover and the box body, and the locking component is used to lock the box cover and the box body in a closed state.

8. A portable air conditioner energy efficiency evaluation box according to claim 7, characterized in that: A handle is installed on the outside of the box body, so that the box body can be used as a suitcase when closed, which is convenient to carry and move; casters are installed on the outside of the box body, and the casters and the handle are arranged on opposite sides of the box body; a telescopic handle is arranged at the bottom of the box body, and the telescopic handle can be retracted at the bottom of the box body, or extended to the opposite side of the casters.

9. A portable air conditioner energy efficiency evaluation box according to claim 1, characterized in that: The energy efficiency calculation module can automatically remove data that does not meet the requirements by setting thresholds of flow, temperature and power.

10. A portable air conditioner energy efficiency evaluation box according to claim 1, characterized in that: The human-machine interface unit has the functions of air conditioner energy efficiency value unit conversion, curve viewing, historical record query and auxiliary parameter viewing.

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