Heating and ventilation equipment system for fault order sending

Abstract

The utility model provides a heating and ventilation equipment system for fault order sending, which comprises a water chilling unit, heat dissipation equipment and tail end air conditioning equipment, the heat dissipation equipment is connected with the water chilling unit, and the water chilling unit is connected with the tail end air conditioning equipment; the system further comprises a data acquisition terminal, a storage medium, an MCU, a wireless communication module, an IoT server and a fault order sending system. The water chilling unit, the heat dissipation equipment and the tail end air conditioning equipment are all in signal connection with the data acquisition terminal, the MCU is used for processing acquired data and communicating with the IoT server through the wireless communication module, and then the IoT server sends fault information to the fault order sending system. The data acquisition terminal collects the data of the heating and ventilation equipment in real time, provides a data basis for fault analysis and processing, is helpful for subsequent maintenance personnel to quickly respond to the faults of the heating and ventilation equipment, reduces the operation and maintenance cost, and solves the problem of low efficiency caused by traditional manual troubleshooting and order sending.

Description

Technical Field

[0001] The utility model relates to the technical field of HVAC, and more specifically, to a HVAC equipment system for fault dispatching. Background Art

[0002] HVAC equipment systems are widely used in public buildings, such as hospitals, airports, subways, shopping malls, etc. The system is usually composed of multiple sub-equipment such as water pumps, main units, cooling towers, air-cooled units, etc., which provide a comfortable environment by adjusting the temperature of indoor space. However, due to the complexity of the system itself, the failure of any sub-equipment may cause the entire system to stop operating. These sub-equipment often come from different brands and manufacturers. Equipment produced by different brands and manufacturers may be installed in different locations of the building. Once these sub-equipment fail, maintenance personnel need to check which sub-equipment in the system has failed and determine the equipment brand involved, and then contact the manufacturer of the corresponding brand for on-site maintenance. This processing method is not only cumbersome and time-consuming, but also has a slow fault response and low fault handling efficiency, making it difficult for the HVAC equipment system to be maintained in a timely manner. Utility Model Content

[0003] The utility model aims to overcome at least one defect (shortcoming) of the above-mentioned prior art and provide a HVAC equipment system for fault dispatching, which is used to solve the problem that when a HVAC equipment system fails, maintenance personnel need to manually check the faulty equipment and contact the corresponding manufacturer for on-site repairs, resulting in low maintenance efficiency.

[0004] The technical solution adopted by the utility model is to provide a HVAC equipment system for fault dispatching, including a chiller, a heat dissipation device and a terminal air-conditioning device, the heat dissipation device is connected to the chiller, the chiller is connected to the terminal air-conditioning device, and also includes a data acquisition terminal, a storage medium, an MCU, a wireless communication module, an IoT server, and a fault dispatching system; the chiller, the heat dissipation device and the terminal air-conditioning device are all signal-connected to the data acquisition terminal, the data acquisition terminal is communicatively connected to the MCU, the MCU is communicatively connected to the storage medium and the wireless communication module, the wireless communication module is communicatively connected to the IoT server, and the IoT server is connected to the fault dispatching system.

[0005] The data acquisition terminal monitors and collects the working status, operating parameters and other data of the chiller, cooling equipment and terminal air-conditioning equipment in real time, providing a data basis for the MCU and IoT server to analyze and handle faults. Among them, the MCU processes the data collected by the data acquisition terminal and stores it in the storage medium for subsequent use or processing. The IoT server is connected to the MCU through a wireless communication module, and the IoT server obtains data from the MCU and analyzes and processes the data. The IoT server is connected to the fault dispatching system. When the system detects a specific equipment failure, the IoT server can send the fault information to the fault dispatching system, which will be further distributed and processed by the fault dispatching system, greatly improving the response speed of fault handling, reducing the time cost of manual troubleshooting, and reducing the operation and maintenance cost of the system.

[0006] Furthermore, the chiller includes a compressor, a condenser, an electronic expansion valve and an evaporator which are connected in sequence to form a refrigeration cycle; the condenser is connected to the heat dissipation device, and the evaporator is connected to the terminal air-conditioning device.

[0007] By forming a refrigeration cycle with a compressor, condenser, electronic expansion valve and evaporator, and connecting the condenser to the heat dissipation equipment and the evaporator to the terminal air-conditioning equipment, the chiller achieves stable and efficient refrigeration performance.

[0008] Furthermore, the HVAC equipment system also includes a first water pump, the terminal air-conditioning equipment includes a fan coil unit, and the evaporator, the fan coil unit, and the first water pump are connected in sequence to form a chilled water cycle.

[0009] By sequentially connecting the first water pump, the evaporator, and the fan coil, a chilled water cycle is formed, thereby achieving efficient cooling of the terminal air-conditioning equipment.

[0010] Furthermore, the fan coil unit includes at least one group of a first fan and a heat exchanger, wherein the first fan is used for forced convection to perform heat exchange with the heat exchanger.

[0011] The fan coil unit may be one or more sets of first fans and heat exchangers, and can be flexibly adjusted according to different needs, thereby improving the flexibility and adaptability of the system.

[0012] Furthermore, the heat dissipation device includes a second water pump, a cooling tower and a second fan. The condenser, the cooling tower and the second water pump are connected in sequence to form a cooling water cycle. The second fan is used to dissipate heat from the cooling tower.

[0013] The cooling water circulation can quickly take away the heat generated by the condenser, and the heat dissipation capacity of the cooling tower can be further improved by setting up a second fan.

[0014] Furthermore, the data acquisition terminal includes a first pressure sensor, a first voltage sensor, a first rotation speed sensor and a first temperature sensor for respectively acquiring pressure, voltage, rotation speed and temperature of the compressor.

[0015] Furthermore, the data acquisition terminal also includes a second temperature sensor and a third temperature sensor installed at the air inlet and outlet of the terminal air-conditioning equipment, which are used to collect the inlet temperature and outlet temperature respectively; the first fan is equipped with a second speed sensor for collecting the speed of the first fan.

[0016] Furthermore, the data acquisition terminal also includes a first flow rate sensor, a fourth temperature sensor and a water pressure sensor installed between the terminal air-conditioning equipment and the first water pump, which are respectively used to collect the chilled water flow rate, temperature and water pressure parameter values ​​between the terminal air-conditioning equipment and the first water pump.

[0017] Furthermore, the data acquisition terminal also includes a fifth temperature sensor and a sixth temperature sensor installed at the water outlet and return water outlet of the evaporator, which are respectively used to collect the evaporator water outlet temperature and return water temperature; and includes a second pressure sensor installed on the evaporator, which is used to collect the pressure parameter value of the evaporator.

[0018] Furthermore, the data acquisition terminal also includes a seventh temperature sensor, a second flow rate sensor, a third pressure sensor and a second voltage sensor installed on the second water pump, which are respectively used to collect the temperature, flow rate, pressure and voltage parameter values ​​of the second water pump; an eighth temperature sensor installed between the condenser and the cooling tower, which is used to collect the outlet water temperature of the condenser; and a third speed sensor installed on the cooling tower, which is used to collect the speed of the second fan.

[0019] Compared with the prior art, the beneficial effects of the utility model are: real-time collection of HVAC equipment data through the data acquisition terminal, providing data basis for the analysis and processing of faults by the MCU and IoT servers, and providing data support for the system to quickly identify which specific equipment is in danger of failure, thereby avoiding long-term manual diagnosis and troubleshooting of faulty equipment. At the same time, the fault dispatching system is also connected to user terminals such as mobile phones and tablets. The user terminals are used by maintenance personnel, and the work order information is sent to the user terminals of the maintenance personnel in a timely manner, achieving a rapid response to fault processing and reducing the operation and maintenance costs of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 1 is a system block diagram of an embodiment of the present utility model. DETAILED DESCRIPTION

[0021] The drawings of the present invention are only used for illustrative purposes and cannot be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0022] Example 1

[0023] like Figure 1 As shown, this embodiment provides a HVAC equipment system for fault dispatching, including a chiller, a heat dissipation device and a terminal air conditioning device. The heat dissipation device is connected to the chiller for heat exchange with the chiller. The terminal air conditioning device is connected to the chiller for heat exchange with the chiller.

[0024] The HVAC equipment system of this embodiment also includes a data acquisition terminal, a storage medium, an MCU, a wireless communication module, an IoT server, and a fault dispatching system. The chiller, the heat dissipation device, and the terminal air conditioning device are all connected to the data acquisition terminal by signal, the data acquisition terminal is connected to the MCU by communication, the MCU is connected to the storage medium and the wireless communication module by communication, the wireless communication module is connected to the IoT server by communication, and the IoT server is connected to the fault dispatching system.

[0025] The data acquisition terminal is used to collect the operating parameter information of each sub-device in the HVAC equipment system in real time and transmit the data to the MCU. After receiving the data, the MCU will process it accordingly and store the processed data in the storage medium for subsequent use or further processing. The IoT server is connected to the MCU through a wireless communication module to achieve two-way data transmission. After the IoT server obtains data from the MCU, it analyzes and processes the data to provide data support for the subsequent work order distribution system.

[0026] The chiller includes a compressor, a condenser, an electronic expansion valve and an evaporator connected in sequence to form a refrigeration cycle. The condenser is connected to the heat dissipation device, and the evaporator is connected to the terminal air conditioning device. When the chilled water of the terminal air conditioning device passes through the evaporator, the refrigerant in the chiller absorbs the heat of the chilled water, lowering the temperature of the chilled water, thereby achieving refrigeration and heat dissipation of the terminal air conditioning device.

[0027] The HVAC equipment system of this embodiment also includes a first water pump, which can be a chilled water pump. The terminal air conditioning equipment includes a fan coil unit, and the evaporator, the fan coil unit, and the first water pump are connected in sequence to form a chilled water cycle. Specifically, the inlet of the first water pump is connected to the fan coil unit, and the outlet of the first water pump is connected to the evaporator. During operation, the low-temperature refrigerant in the evaporator vaporizes and absorbs the heat of the chilled water to reduce the temperature of the chilled water. Subsequently, driven by the first water pump, the cooled chilled water flows into the fan coil unit and exchanges heat with the air in the environment where the fan coil unit is located, thereby reducing the air temperature in the environment. After the heat exchange is completed, the chilled water passes through the first water pump and then passes through the evaporator again to form a refrigeration cycle, which effectively adjusts the air temperature of the environment where the terminal air conditioning equipment is installed.

[0028] The fan coil unit includes at least one fan coil unit consisting of a first fan and a heat exchanger. The first fan of each fan coil unit is used to generate forced convection and blow air to the heat exchanger, thereby realizing heat exchange between the air and the heat exchanger. Each fan coil unit may include one or more heat exchangers, and the multiple heat exchangers are arranged downstream of the first fan blowing port. The air is blown to multiple heat exchangers at the same time by the first fan, thereby improving the efficiency of heat exchange between the air and the heat exchanger. In the specific implementation process, the fan coil unit can be provided with multiple fan coil units according to actual needs. Multiple fan coil units can simultaneously perform heat exchange with the air to meet a variety of different heat exchange requirements. The heat exchanger can be a plate heat exchanger, a copper tube aluminum sheet heat exchanger, etc., which can be selected according to specific actual needs.

[0029] In this embodiment, the heat dissipation device includes a second water pump, a cooling tower and a second fan, and the condenser, the cooling tower and the second water pump are connected in sequence to form a cooling water cycle. Driven by the second water pump, the cooling water flows out of the condenser, flows to the cooling tower after passing through the second water pump for heat dissipation, and then flows into the condenser for a new round of cooling water circulation after the heat dissipation is completed. The second water pump is a cooling water pump, which is used to drive the cooling water to flow in the cooling water cycle. The second fan is used to dissipate heat from the cooling tower. When the cooling water flows through the cooling tower, the second fan and the air force convection cause the cooling water in the cooling tower to exchange heat with the air and accelerate the evaporation of water in the cooling tower, thereby reducing the temperature of the cooling water and improving the heat dissipation efficiency of the heat dissipation device.

[0030] The cooling tower of this embodiment can be an open cooling tower or a closed cooling tower. The open cooling tower adopts an open structure and uses circulating water and air to directly contact for heat exchange, which has a high heat dissipation efficiency and can reduce energy consumption. The water in the closed cooling tower does not directly contact the external environment, so it will not evaporate, which saves more water resources, but has a lower heat dissipation efficiency than the open cooling tower.

[0031] In this embodiment, the data acquisition terminal includes a first pressure sensor, a first voltage sensor, a first rotation speed sensor and a first temperature sensor for respectively acquiring pressure, voltage, rotation speed and temperature of the compressor.

[0032] Specifically, the data acquisition terminal also includes a second temperature sensor and a third temperature sensor installed at the air inlet and outlet of the terminal air-conditioning equipment, which are used to collect the inlet temperature and outlet temperature respectively; the first fan is equipped with a second speed sensor for collecting the speed of the first fan.

[0033] In some embodiments, the data acquisition terminal also includes a first flow rate sensor, a fourth temperature sensor and a water pressure sensor installed between the terminal air conditioning equipment and the first water pump, which are respectively used to collect the chilled water flow rate, temperature and water pressure parameter values ​​between the terminal air conditioning equipment and the first water pump.

[0034] In some embodiments, the data acquisition terminal also includes: a fifth temperature sensor and a sixth temperature sensor installed at the water outlet and return water outlet of the evaporator, respectively used to collect the evaporator water outlet temperature and return water temperature; a second pressure sensor installed at the evaporator, used to collect the pressure parameter value of the evaporator.

[0035] According to some embodiments, the data acquisition terminal also includes a seventh temperature sensor, a second flow rate sensor, a third pressure sensor and a second voltage sensor installed on the second water pump, which are respectively used to collect the temperature, flow rate, pressure and voltage parameter values ​​of the second water pump; an eighth temperature sensor installed between the condenser and the cooling tower, which is used to collect the outlet water temperature of the condenser; and a third speed sensor installed on the cooling tower, which is used to collect the speed of the second fan.

[0036] After each sensor collects the operating parameters of the HVAC equipment, the data acquisition terminal transmits the collected data to the MCU through the bus for further processing.

[0037] In this embodiment, the wireless communication module is a 4G module. The 4G module has the advantages of fast data transmission, stable transmission signal, and high reliability.

[0038] In some optional embodiments, the storage medium may be a local storage device, a remote storage device, or a combination of the two. Local storage devices have fast access speeds and high security, but poor stability. When a local storage device fails, data reliability is low. Remote storage devices have low access speeds and lower security than local storage devices, but are more reliable and stable.

[0039] In this embodiment, the fault dispatching system is connected to a user terminal. Based on the data provided by the IoT server, the fault dispatching system efficiently and accurately dispatches work orders to different user terminals. Maintenance engineers receive corresponding work orders dispatched by the fault dispatching system through user terminals, thereby helping maintenance engineers to quickly respond to and handle specific HVAC equipment failures. In specific implementation, the user terminal can be a terminal device such as a mobile phone or a tablet computer.

[0040] In actual application, the data acquisition terminal collects the specific operating parameters of each sub-device in the HVAC equipment in real time through sensors, and transmits them to the MCU through the bus. After receiving the data, the MCU processes the data accordingly and stores the processed data in the storage medium for subsequent use or further processing. The IoT server is connected to the MCU through a wireless communication module to achieve two-way data transmission. After the IoT server obtains the data from the MCU, it analyzes and processes the data to provide data support for the subsequent work order distribution system. Based on the data provided by the IoT server, the subsequent work order distribution system distributes the fault work order to the user terminal used by different maintenance personnel through a preset algorithm, which helps the maintenance personnel to respond quickly and deal with the HVAC equipment failure accordingly.

[0041] Obviously, the above embodiments of the utility model are only examples for clearly explaining the technical solution of the utility model, and are not intended to limit the specific implementation methods of the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

1. A HVAC equipment system for fault dispatching, comprising a chiller, a heat dissipation device and a terminal air conditioning device, wherein the heat dissipation device is connected to the chiller, and the chiller is connected to the terminal air conditioning device, characterized in that: It also includes a data acquisition terminal, a storage medium, an MCU, a wireless communication module, an IoT server, and a fault dispatching system; the chiller, the heat dissipation device, and the terminal air-conditioning device are all signal-connected to the data acquisition terminal, the data acquisition terminal is communicatively connected to the MCU, the MCU is communicatively connected to the storage medium and the wireless communication module, the wireless communication module is communicatively connected to the IoT server, and the IoT server is connected to the fault dispatching system.

2. A HVAC equipment system for fault dispatching according to claim 1, characterized in that: The chiller comprises a compressor, a condenser, an electronic expansion valve and an evaporator which are connected in sequence to form a refrigeration cycle; the condenser is connected to the heat dissipation device, and the evaporator is connected to the terminal air conditioning device.

3. A HVAC equipment system for fault dispatching according to claim 2, characterized in that: The HVAC equipment system also includes a first water pump, the terminal air conditioning equipment includes a fan coil unit, and the evaporator, the fan coil unit, and the first water pump are connected in sequence to form a chilled water cycle.

4. A HVAC equipment system for fault dispatching according to claim 3, characterized in that: The fan coil unit includes at least one set of a first fan and a heat exchanger, wherein the first fan is used for forced convection to perform heat exchange with the heat exchanger.

5. A HVAC equipment system for fault dispatching according to any one of claims 2 to 4, characterized in that: The heat dissipation device includes a second water pump, a cooling tower and a second fan. The condenser, the cooling tower and the second water pump are connected in sequence to form a cooling water cycle. The second fan is used to dissipate heat from the cooling tower.

6. A HVAC equipment system for fault dispatching according to any one of claims 2 to 4, characterized in that: The data acquisition terminal includes a first pressure sensor, a first voltage sensor, a first rotation speed sensor and a first temperature sensor for respectively acquiring pressure, voltage, rotation speed and temperature of the compressor.

7. A HVAC equipment system for fault dispatching according to claim 4, characterized in that: The data acquisition terminal also includes a second temperature sensor and a third temperature sensor installed at the air inlet and outlet of the terminal air-conditioning equipment, which are used to collect the inlet temperature and outlet temperature respectively; the first fan is equipped with a second speed sensor for collecting the speed of the first fan.

8. A HVAC equipment system for fault dispatching according to any one of claims 3 to 4, characterized in that: The data acquisition terminal also includes a first flow rate sensor, a fourth temperature sensor and a water pressure sensor installed between the terminal air conditioning equipment and the first water pump, which are respectively used to collect the chilled water flow rate, temperature and water pressure parameter values ​​between the terminal air conditioning equipment and the first water pump.

9. A HVAC equipment system for fault dispatching according to claim 5, characterized in that: The data acquisition terminal also includes: A fifth temperature sensor and a sixth temperature sensor installed at the water outlet and the water return port of the evaporator, respectively used to collect the water outlet temperature and the water return temperature of the evaporator; a second pressure sensor installed at the evaporator, used to collect the pressure parameter value of the evaporator; and / or, a seventh temperature sensor, a second flow rate sensor, a third pressure sensor and a second voltage sensor installed on the second water pump, for respectively collecting temperature, flow rate, pressure and voltage parameter values ​​of the second water pump; and / or, an eighth temperature sensor installed between the condenser and the cooling tower, for collecting the outlet water temperature of the condenser; And / or, a third rotation speed sensor installed in the cooling tower is used to collect the rotation speed of the second fan.

10. A HVAC equipment system for fault dispatching according to any one of claims 1 to 4 and 7, characterized in that: The fault dispatching system is connected to a user terminal.

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