A smart IoT control system for a variable frequency energy-saving swimming pool dehumidifying heat pump

Abstract

This utility model relates to a smart IoT control system for a variable frequency energy-saving dehumidifying heat pump for swimming pools. It includes a dehumidifying heat pump, a controller, and a mobile device. The variable frequency return air fan, return / supply air temperature and humidity sensors, variable frequency supply air fan, variable frequency compressor, fresh / exhaust air electrically controlled valve, and auxiliary cold / heat source equipment within the dehumidifying heat pump are all connected to the controller. The controller and the mobile device are communicatively connected. This utility model uses a variable frequency fan, variable frequency compressor, and electric air valve, in conjunction with the controller, to achieve variable frequency control of cooling and heating effects and fresh / exhaust air control, reducing unit operating energy consumption and achieving energy savings. The mobile device runs a smart IoT APP, communicating with the controller via the network to control equipment operation, monitor equipment status, and view indoor temperature and humidity data, realizing smart IoT control. The controller can push fault information to the mobile device, enabling users and manufacturers to understand the cause of the fault and dispatch personnel for timely repair.

Description

Technical Field

[0001] This utility model belongs to the field of intelligent air purification, sterilization and disinfection technology for constant temperature and humidity in swimming pools, specifically involving an intelligent IoT control system for a variable frequency energy-saving swimming pool-specific dehumidifying heat pump. Background Technology

[0002] Swimming pools are characterized by high humidity, high temperature, high corrosion (containing chlorine), and high energy consumption. Air and water treatment equipment for swimming pools has become increasingly sophisticated. Currently, commonly used swimming pool-specific dehumidifying heat pumps integrate dehumidification, pool water heating, and air conditioning. They recover energy from the humid and hot air within the pool to heat the pool water and air, achieving dehumidification, temperature control, and air conditioning. However, most components use fixed-frequency compressors and fans, making it impossible to adjust component operation according to operating conditions to reduce power consumption. They focus on heat recovery and temperature and humidity control within the swimming pool, and the controllers are relatively simple, requiring manual operation on-site. Summary of the Invention

[0003] Therefore, this utility model provides a smart IoT control system for a variable frequency energy-saving swimming pool dehumidifying heat pump to solve the energy waste problem caused by the fixed frequency control of traditional dehumidifying heat pumps mentioned in the background art.

[0004] The technical solution of this utility model is as follows: a smart IoT control system for a variable frequency energy-saving swimming pool dehumidifying heat pump, comprising: a dehumidifying heat pump, a controller and a mobile device, wherein the controller is installed in the main unit section of the dehumidifying heat pump;

[0005] The dehumidification heat pump includes: a variable frequency return air fan installed in the return air section; a return air temperature and humidity sensor installed in the purified exhaust air section; a variable frequency supply air fan and a supply air temperature and humidity sensor installed in the supply air section; a variable frequency compressor installed in the main unit section; auxiliary cold and heat source equipment connected to the inlet and outlet of the surface cooler in the evaporation surface cooling section; and an outdoor condenser connected to the variable frequency compressor, with a variable frequency fan installed inside the outdoor condenser.

[0006] The variable frequency return air fan, supply air temperature and humidity sensor, return air temperature and humidity sensor, variable frequency supply air fan, variable frequency compressor, auxiliary cold and heat source equipment, and variable frequency fan are all connected to the controller, and the controller is communicatively connected to the mobile device;

[0007] The controller is used to perform frequency conversion control on the variable frequency return air fan, variable frequency air fan, variable frequency compressor and outdoor condenser based on the detection parameters of the return air temperature and humidity sensor and the supply air temperature and humidity sensor, and to perform start and stop control on the auxiliary cold and heat source equipment.

[0008] Furthermore, the dehumidifying heat pump also includes: a fresh air electrically controlled valve, a fresh air temperature and humidity sensor, and an air quality sensor installed in the return air section; and an exhaust electrically controlled valve installed in the purified exhaust air section.

[0009] The fresh air electrically controlled valve, the fresh air temperature and humidity sensor, the air quality sensor, and the exhaust electrically controlled valve are all connected to the controller;

[0010] The controller is used to control the opening range of the fresh air electrically controlled valve according to the detection parameters of the fresh air temperature and humidity sensor, and to control the opening range of the exhaust electrically controlled valve according to the detection parameters of the air quality sensor.

[0011] Furthermore, the auxiliary cold and heat source equipment and the inlet and outlet of the surface cooler are connected by pipes, and each pipe is equipped with an electric regulating water valve, which is connected to the controller.

[0012] Furthermore, the controller is communicatively connected to the HMI (Human Machine Interface) control screen.

[0013] Furthermore, the controller is a PLC controller.

[0014] The beneficial effects of this utility model are as follows: This utility model uses a variable frequency fan and a variable frequency compressor, combined with a controller to achieve variable frequency control of the cooling effect, resulting in low unit operating energy consumption and energy saving. This utility model employs a fresh air electrically controlled valve and an exhaust electrically controlled valve. By detecting the temperature and humidity of the fresh air, the opening range of the fresh air electrically controlled valve is adjusted as needed to introduce fresh air from the outside, thus achieving energy saving. Simultaneously, by detecting the air quality in the return air section, the opening range of the exhaust electrically controlled valve is adjusted to improve the overall indoor air quality. The mobile device of this utility model runs a smart IoT APP, communicating with the controller via the network to achieve functions such as controlling equipment operation, monitoring equipment operation status, and viewing indoor temperature and humidity data on the mobile device, thereby realizing smart IoT control. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the segmented structure of the dehumidifying heat pump in this utility model.

[0016] Figure 2 This is a schematic diagram of the dehumidifying heat pump in this utility model.

[0017] Figure 3 This is a structural block diagram of the controller in this utility model. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] In the technical solution of this utility model, Figure 1 , Figure 2 and Figure 3 This is a schematic diagram illustrating the overall structure of a smart IoT control system for a variable frequency energy-saving swimming pool dehumidifying heat pump, as shown below. Figure 1 , Figure 2 and Figure 3 As shown, this utility model includes:

[0020] The system includes a dehumidifying heat pump, a controller D1, and a mobile device D2. The controller D1 is located in the main unit section A1 of the dehumidifying heat pump, specifically in the control cabinet C1.

[0021] The dehumidifying heat pump is configured sequentially as follows: main unit section A1, air supply section A2, evaporator cooling section A3, purified exhaust section A4, and return air section A5. Return air section A5 is equipped with return air inlet B1 and fresh air inlet, with a fresh air electrically controlled valve B2 installed at the fresh air inlet. Purified exhaust section A4 is equipped with an exhaust outlet, with an exhaust electrically controlled valve B3 installed at the outlet. The purified exhaust section also includes sequentially installed purification and filtration devices such as a pre-filter, a PM2.5 electrostatic adsorption device, and an activated carbon adsorption device. Evaporator cooling section A3 consists of an evaporator, a condenser, and a cooling surface arranged in series.

[0022] The dehumidifying heat pump includes: a variable frequency return air fan C5 installed in the return air section A5; a return air temperature and humidity sensor K1 installed in the purified exhaust air section A4; a variable frequency supply air fan C4 and a supply air temperature and humidity sensor K2 installed in the supply air section A2; a variable frequency compressor C3 installed in the main unit section A1; an auxiliary cold and heat source device A8 connected to the inlet and outlet of the surface cooler in the evaporator cooling section A3; and an outdoor condenser A6 connected to the variable frequency compressor C3, wherein a variable frequency fan is installed inside the outdoor condenser.

[0023] The evaporator and condenser need to be connected to the variable frequency compressor C3 to achieve cooling and heating, thereby changing the temperature of the return air. The variable frequency compressor C3 is connected to the outdoor condenser A6 and also to the constant temperature water unit A7. The heat generated by the compressor enters the heat exchanger to circulate and exchange heat with the pool water in the swimming pool. At the same time, a pool water temperature sensor K5 is installed on the outlet pipe of the constant temperature water unit A7, and the pool water temperature sensor K5 is connected to the controller D1.

[0024] The return air temperature and humidity sensor K1 is used to detect the temperature and humidity of the air discharged from the variable frequency return air fan C5. The supply air temperature and humidity sensor K2 is used to detect the temperature and humidity of the air passing through the evaporator cooling section A3.

[0025] The variable frequency return air fan C5, the supply air temperature and humidity sensor K2, the return air temperature and humidity sensor K1, the variable frequency supply air fan C4, the variable frequency compressor C3, the auxiliary cold and heat source equipment A8, and the variable frequency fan are all connected to the controller D1, and the controller D1 is communicatively connected to the mobile device D2.

[0026] The mobile device D2 is a remote device such as a mobile phone or computer, which can meet the needs of remote intelligent control during use. The controller is a PLC controller, which connects to the Internet through a corresponding network module, such as a switch, router, or Wi-Fi. The mobile device D2 has a smart IoT APP installed. The smart IoT APP is software for controlling the operation of the device and viewing corresponding parameters. This software is a conventional technology in this field, so it will not be described in detail here. The mobile device D2 can also connect to a server through the network. The server is used for data storage, viewing, push, and control signal transmission. At the same time, the server communicates with the controller through the Internet. In this case, the server is equivalent to a cloud platform, integrating all the data. This platform is a smart interconnection platform, which is a conventional technology in this field, so it will not be described in detail here.

[0027] The D2 mobile device runs a smart IoT app and communicates with the controller via the network to control device operation, monitor device status, and view data such as indoor temperature and humidity. The controller can also push fault information to the mobile device, enabling users and manufacturers to understand the cause of the fault and dispatch personnel for timely repair.

[0028] The controller D1 is used to perform frequency conversion control on the variable frequency return air fan C5, variable frequency air supply fan C4, variable frequency compressor C3 and variable frequency fan, and to perform start-stop control on the auxiliary cold and heat source equipment A8, based on the detection parameters of the return air temperature and humidity sensor K1 and the supply air temperature and humidity sensor K2.

[0029] In one embodiment of this technical solution, the dehumidifying heat pump further includes: a fresh air electrically controlled valve B2, a fresh air temperature and humidity sensor K3, and an air quality sensor K4 installed in the return air section A5; and an exhaust electrically controlled valve B3 installed in the purified exhaust air section A4.

[0030] Among them, the fresh air temperature and humidity sensor K3 is installed at the fresh air inlet to detect the temperature and humidity of the fresh air drawn into the return air section A5, and the air quality sensor K4 is used to detect the air quality in the return air section A5, mainly detecting parameters such as CO2, PM2.5, and chlorine concentration.

[0031] The fresh air electrically controlled valve B2, the fresh air temperature and humidity sensor K3, the air quality sensor K4, and the exhaust electrically controlled valve B3 are all connected to the controller D1.

[0032] The controller D1 is used to control the opening range of the fresh air electrically controlled valve B2 according to the detection parameters of the fresh air temperature and humidity sensor K3, and to control the opening range of the exhaust electrically controlled valve B3 according to the detection parameters of the air quality sensor K4.

[0033] In one embodiment of this technical solution, the inlet and outlet of the auxiliary heat source device A8 are connected to the surface cooler via pipelines. Each pipeline is equipped with an electrically adjustable water valve, which is connected to the controller. When the controller starts the auxiliary heat source device A8, it opens the electrically adjustable water valve to allow the cooling / heating medium from the auxiliary heat source device to flow into the surface cooler, thereby achieving cooling or heating. The electrically adjustable water valve can close or open the pipeline between the auxiliary heat source device A8 and the surface cooler.

[0034] In one embodiment of this technical solution, the controller is communicatively connected to the HMI human-machine interface control screen C2, and the human-machine interaction control screen C2 realizes human-machine interaction on site.

[0035] In one embodiment of this technical solution, the controller D1 is a PLC controller. The controller can implement fault alarms: inverter fault alarm, refrigerant leakage alarm; compressor high / low pressure protection, compressor overload protection, blower overload protection, return air fan overload protection, condenser fan overload protection, water flow protection, water pump overload protection, etc. These alarms and overload protections can be pushed to the user and manufacturer via a smart IoT APP.

[0036] The specific operation process of this utility model is as follows:

[0037] High temperature (low temperature) and high humidity air in the swimming pool enters the return air section A5 through the return air inlet B1. When the return air temperature and humidity sensor K1 detects a large temperature difference (the difference between the detected return air temperature and the set return air temperature) and a large humidity difference (the difference between the detected return air humidity and the set return air humidity), the unit controller prioritizes the start of the auxiliary cold and heat source equipment A8 to pre-treat the air in the swimming pool.

[0038] After the auxiliary cold and heat source equipment A8 has been running for a period of time, the temperature and humidity difference is still relatively large. The controller then controls the variable frequency compressor C3 to start and work synchronously. The variable frequency compressor C3 adjusts the compressor frequency according to the demand: by changing the working frequency of the variable frequency compressor C3, the displacement of the variable frequency compressor C3 is adjusted, thereby controlling the cooling and heating capacity. The adjustment is carried out step by step from low frequency to high frequency, thereby achieving the effects of high efficiency, energy saving and high comfort.

[0039] When the return air temperature and humidity sensor K1 detects a small difference in the temperature and humidity of the return air in the venue, the controller adjusts the variable frequency compressor C3 by changing its operating frequency. This adjusts the displacement of the variable frequency compressor C3, thereby controlling its cooling and heating capacity. The adjustment is performed step by step from high frequency to low frequency, achieving high efficiency, energy saving, and high comfort.

[0040] When the return air temperature and humidity sensor K1 detects a very small difference in temperature and humidity in the return air of the venue, the variable frequency compressor C3 stops working, and the auxiliary cold and heat source equipment A8 continues to work to achieve the effect of heat preservation and humidity control of the air in the swimming pool.

[0041] When the return air temperature and humidity sensor K1 detects that the return air temperature and humidity value in the venue reaches the set temperature and humidity requirements, the unit compressor and auxiliary cold and heat source equipment A8 both enter standby mode.

[0042] After the unit starts, the variable frequency supply fan C4 and variable frequency return fan C5 start working. The high temperature (low temperature) and high humidity air in the swimming pool enters the return air section A5 through the return air inlet B1. When the return air temperature and humidity sensor K1 detects a large temperature difference (the difference between the detected return air temperature and the set return air temperature) and humidity difference (the difference between the detected return air humidity and the set return air humidity), the controller controls the supply fan C4 and return fan C5 to perform variable frequency adjustment: by changing the operating frequency of the variable frequency supply fan C4 and the variable frequency return fan C5, the speed of the variable frequency supply fan C4 and the variable frequency return fan C5 is adjusted, thereby realizing the adjustment of the air volume and pressure of the variable frequency supply fan C4 and the variable frequency return fan C5. The adjustment is carried out step by step from low frequency to high frequency, so as to achieve the effects of high efficiency, energy saving and high comfort.

[0043] When the return air temperature and humidity sensor K1 detects a small difference in the temperature and humidity of the return air in the venue, the controller adjusts the frequency of the variable frequency supply fan C4 and the variable frequency return fan C5 by changing their operating frequency. This reduces the speed of the variable frequency supply fan C4 and the variable frequency return fan C5, thereby adjusting the air volume and pressure of the variable frequency supply fan C4 and the variable frequency return fan C5 step by step from high frequency to low frequency, achieving high efficiency, energy saving and high comfort.

[0044] When the return air temperature and humidity sensor K1 detects a small difference in temperature and humidity in the return air of the venue, the variable frequency compressor C3 stops working while the auxiliary cold and heat source equipment continues to work to achieve the effect of heat preservation and humidity control for the air in the swimming pool. At the same time, the variable frequency supply fan C4 and the variable frequency return air fan C5 maintain low frequency operation to constantly monitor the air in the swimming pool.

[0045] When the return air temperature and humidity sensor K1 detects that the return air temperature and humidity value in the venue reaches the set temperature and humidity requirements, the unit compressor and auxiliary cold and heat source equipment enter standby mode; the variable frequency supply fan C4 and variable frequency return air fan C5 operate at the lowest frequency to ensure air circulation and real-time monitoring in the venue.

[0046] The air supply temperature and humidity sensor K2 detects the temperature and humidity in the air supply section A2. Based on the temperature and humidity in the air supply section A2, the controller determines whether to adjust the operating frequency of the variable frequency compressor C3, variable frequency air supply fan C4, and variable frequency return air fan C5. When the detected temperature is much lower than the set air supply temperature, the frequency is increased; when it is higher than the set air supply temperature, the frequency is decreased.

[0047] When the swimming pool air enters the return air section A5 through the return air inlet B1, and the return air temperature and humidity sensor K1 detects that the temperature has reached the upper limit of the set value, and at the same time the pool water temperature sensor K5 detects that the pool water temperature has reached the upper limit of the set value, but the return air humidity detected by the return air temperature and humidity sensor K1 has not reached the set return air humidity value, the outdoor condenser starts to work, and the excess heat generated during the operation of the equipment is discharged to the outside through the outdoor unit.

[0048] When the unit starts cooling mode, the controller starts the inverter compressor C3 according to the demand, and the outdoor condenser A6 starts working, and its working frequency is synchronized with the working frequency of the inverter compressor C3. When the return air temperature and humidity sensor K1 in the unit detects a large difference in temperature and humidity in the return air in the venue, the demand of the inverter compressor C3 is large. The inverter compressor C3 gradually increases its frequency from low frequency to high frequency, and at the same time, the inverter fan of the outdoor condenser A6 also gradually increases its frequency from low frequency to high frequency.

[0049] When the return air temperature and humidity sensor K1 detects a small difference in return air temperature and humidity in the venue, the demand for variable frequency compressor C3 is small. Variable frequency compressor C3 gradually reduces its frequency from high to low. At the same time, the variable frequency fan of outdoor condenser A6 also gradually reduces its frequency from high to low.

[0050] When the return air temperature and humidity sensor K1 detects a very small difference in the return air temperature and humidity inside the venue, the auxiliary cold and heat source equipment is sufficient to meet the needs for air insulation and humidification. At this time, there is no need for the variable frequency compressor C3, so the variable frequency compressor C3 stops working, and the outdoor condenser A6 also stops working.

[0051] During normal operation, the fresh air control valve B2 is partially open, with a preset opening range to introduce some fresh air. When the fresh air temperature and humidity sensor K3 detects a large temperature difference (the difference between the detected fresh air temperature and the set fresh air temperature) and a large humidity difference (the difference between the detected fresh air humidity and the set fresh air humidity), the unit controller will completely close the fresh air control valve B2. When the fresh air temperature and humidity sensor K3 detects a temperature difference (the difference between the detected fresh air temperature and the set fresh air temperature) and a large humidity difference (the difference between the detected fresh air humidity and the set fresh air humidity) within the set range, the unit controller will open the fresh air control valve B2 more fully to achieve the desired temperature and humidity control in the swimming pool, reducing the compressor's operating frequency and achieving energy savings.

[0052] During normal operation of the unit, the exhaust valve B3 is partially open (the opening range can be preset) to exhaust some indoor air. When the air quality sensor K4 inside the return air vent B1 detects high concentrations of CO2, PM2.5, and chlorine in the air, the unit controller will open the exhaust valve B3 further. After a period of time, when the K4 air quality sensor detects that the air quality is within the set range, the unit controller will close the exhaust valve B3 to the preset range.

[0053] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A smart IoT control system for a variable frequency energy-saving swimming pool-specific dehumidifying heat pump, characterized in that, include: A dehumidifying heat pump, a controller (D1), and a mobile device (D2), wherein the controller (D1) is located in the main unit section (A1) of the dehumidifying heat pump. The dehumidifying heat pump includes: a variable frequency return air fan (C5) installed in the return air section (A5); a return air temperature and humidity sensor (K1) installed in the purified exhaust air section (A4); a variable frequency supply air fan (C4) and a supply air temperature and humidity sensor (K2) installed in the supply air section (A2); a variable frequency compressor (C3) installed in the main unit section (A1); an auxiliary cold and heat source device (A8) connected to the inlet and outlet of the surface cooler in the evaporator cooling section (A3); and an outdoor condenser (A6) connected to the variable frequency compressor (C3), wherein a variable frequency fan is installed inside the outdoor condenser (A6). The variable frequency return air fan (C5), supply air temperature and humidity sensor (K2), return air temperature and humidity sensor (K1), variable frequency supply air fan (C4), variable frequency compressor (C3), auxiliary cold and heat source equipment (A8) and variable frequency fan are all connected to the controller (D1), and the controller (D1) is communicatively connected to the mobile device (D2). The controller (D1) is used to perform frequency conversion control on the variable frequency return air fan (C5), variable frequency air fan (C4), variable frequency compressor (C3) and variable frequency fan, and to perform start-stop control on the auxiliary cold and heat source equipment (A8) based on the detection parameters of the return air temperature and humidity sensor (K1) and the supply air temperature and humidity sensor (K2).

2. The intelligent IoT control system for the variable frequency energy-saving swimming pool-specific dehumidifying heat pump as described in claim 1, characterized in that, The dehumidifying heat pump also includes: a fresh air electrically controlled valve (B2), a fresh air temperature and humidity sensor (K3), and an air quality sensor (K4) installed in the return air section (A5); and an exhaust electrically controlled valve (B3) installed in the purified exhaust air section (A4). The fresh air electrically controlled valve (B2), the fresh air temperature and humidity sensor (K3), the air quality sensor (K4), and the exhaust electrically controlled valve (B3) are all connected to the controller (D1); The controller (D1) is used to control the opening range of the fresh air electric control valve (B2) according to the detection parameters of the fresh air temperature and humidity sensor (K3), and to control the opening range of the exhaust electric control valve (B3) according to the detection parameters of the air quality sensor (K4).

3. The intelligent IoT control system for the variable frequency energy-saving swimming pool-specific dehumidifying heat pump as described in claim 1, characterized in that, The auxiliary heat source equipment (A8) and the inlet and outlet of the surface cooler are connected by pipes. Each pipe is equipped with an electric regulating water valve, which is connected to the controller.

4. The intelligent IoT control system for the variable frequency energy-saving swimming pool-specific dehumidifying heat pump as described in claim 1, characterized in that, The controller (D1) is communicatively connected to the HMI human-machine interface control screen (C2).

5. The intelligent IoT control system for the variable frequency energy-saving swimming pool-specific dehumidifying heat pump as described in claim 1, characterized in that, The controller (D1) is a PLC controller.

6. The intelligent IoT control system for the variable frequency energy-saving swimming pool-specific dehumidifying heat pump as described in claim 1, characterized in that, The variable frequency compressor (C3) is connected to the constant temperature water unit (A7). The heat generated by the variable frequency compressor (C3) enters the heat exchanger to circulate and exchange heat with the pool water in the swimming pool. A pool water temperature sensor (K5) is installed on the outlet pipe of the constant temperature water unit (A7).

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