A control method based on EVI sky fluorine ground water self-adaptive target water temperature output

Abstract

The application discloses a control method based on EVI sky fluorine ground water self-adapting target water temperature output, wherein when only ground heating is started, a heat pump carries out self-adapting control operation. The application can automatically output target water temperature according to indoor temperature and heat of floor heat storage, according to interval time of unit operation to temperature stop, and does not need customers to set complicatedly, and the automatically output water temperature can realize energy saving and consumption reduction and comfort.

Description

Technical Field

[0001] This invention relates to a control method based on EVI (Electronic Water Quality) adaptive target water temperature output. Background Technology

[0002] As economic levels rise and consumers' purchasing power increases, coupled with the impact of the COVID-19 pandemic, public health awareness has also improved. People are increasingly interested in creating comfortable homes (characteristics of comfortable homes: ecological, efficient, healthy, and energy-saving), and more and more homeowners have joined the ranks of comfortable homeowners, making their homes more comfortable and providing their families with a better quality of life.

[0003] As a result, the heat pump dual-supply system, which can closely link the cooling and heating functions of the home, has also attracted much attention. In recent years, the market for heat pump dual-supply systems has been booming because dual-supply systems can improve the comfort of the home to a certain extent, while also being highly efficient and energy-saving, and are more in line with the trends and requirements of the times.

[0004] In 2021, heat pump dual-supply units maintained their position as the fastest-growing product among the nine product categories, with the "natural gas, natural gas, and natural water" dual-supply system standing out. This further illustrates the great market potential and space for heat pump dual-supply systems, and it is believed that everyone's pursuit of quality will continue to increase.

[0005] A combined air conditioning and underfloor heating system is a dual-supply system. The central air conditioning system at the top uses a refrigerant system for cooling or heating, while the underfloor heating system uses a water system for heating. However, the air conditioning and underfloor heating systems are actually independent and can be switched freely using valves. In summer, the air conditioning system is activated for cooling, and in winter, both systems can be activated simultaneously for heating, achieving efficient temperature increases.

[0006] Because it uses a "fluorine system" air conditioning system with cold air blowing, the refrigerant directly exchanges heat with the air, which quickly achieves a cooling effect; the heating effect is also very fast because the dual system can heat at the same time.

[0007] Currently, EVI multi-split air conditioning systems generally output a constant water temperature when using underfloor heating in winter. The unit stops when the outlet or return water temperature meets the set requirements. However, outputting a constant outlet or return water temperature is not necessarily the most energy-efficient method. Especially in northern winters, it is common to see some people with windows open at the same time, indicating that the water temperature is set relatively high, thus wasting energy. On the other hand, when the customer sets the water temperature relatively low, the underfloor heating effect is poor. Therefore, an adaptive water temperature output method is needed to solve this problem, achieving both the desired effect and energy saving. Summary of the Invention

[0008] To address the aforementioned problems, this invention provides a control method based on EVI (Electronic Water Quality) adaptive target water temperature output, which effectively solves the problems mentioned in the background art.

[0009] The technical solution adopted in this invention is:

[0010] A control method based on EVI (Electronic Water Refrigeration) adaptive target water temperature output for heat pumps, wherein the heat pump performs adaptive control operation when only underfloor heating is turned on;

[0011] Step 1) If the interval between all indoor heating units reaching the desired temperature and restarting is ≤ t, then adjust the inner loop of T for all indoor heating units to T setting - T1.

[0012] Step 2) Lower the target condensing temperature by one level, record the interval between restarting at the target temperature, and make a judgment.

[0013] Step 3): If the interval time is ≤ t, execute Step 2) until the target condensing temperature drops to the lowest level. If the interval time is > t, then during the next restart operation after reaching the temperature, adjust the inner loop of the T-set to T-T2, T21 for the restart operation of the floor heating indoor unit, and raise the target condensing temperature by one level. At the same time, record the interval time for the next restart operation after reaching the temperature, and repeat Step 3).

[0014] Preferably, when performing steps 1), 2), and 3), if the heat pump meets the exit condition for adaptive control operation, the heat pump exits the adaptive control operation.

[0015] Preferably, the adaptive control operation exit conditions include power failure, fault, mode switch, and exiting energy-saving mode.

[0016] Preferably, t is 60 min, T1 is 2℃, and T2 is 1℃.

[0017] This invention can automatically output the target water temperature based on the indoor temperature and the heat stored in the floor, according to the interval between the unit's operation and shutdown. This eliminates the need for customers to make complicated settings themselves. Moreover, the automatic output of water temperature can achieve energy saving and consumption reduction, as well as comfort. Detailed Implementation

[0018] The present invention will be further described in detail below through specific embodiments.

[0019] This invention discloses a control method based on EVI (Electric Fluorine-Induced Water) adaptive target water temperature output, in which the heat pump performs adaptive control operation when only the underfloor heating is turned on.

[0020] Step 1) If the interval between all indoor heating units reaching the desired temperature and restarting is ≤60 minutes, then adjust the inner loop of the T setting for all indoor heating units to T set -2℃.

[0021] Step 2) Lower the target condensing temperature by one level, record the interval between restarting at the target temperature, and make a judgment.

[0022] Step 3): If the interval is ≤60min, execute Step 2) until the target condensing temperature drops to the lowest level. If the interval is >60min, then during the next restart operation after reaching the desired temperature, adjust the inner loop of the floor heating indoor unit to T setting -1℃ and increase the target condensing temperature by one level. Record the interval of the next restart operation after reaching the desired temperature, and repeat Step 3).

[0023] When executing steps 1), 2), and 3), if the heat pump meets the exit conditions for adaptive control operation, the heat pump exits the adaptive control operation.

[0024] The adaptive control operation exit conditions include power failure, fault, mode switch, and exiting energy-saving mode.

[0025] The table below shows the target condensing temperatures for four levels: 1, 2, 3, and 4. The lower the level, the lower the target condensing temperature.

[0026]

[0027] Finally, it should be noted that the above examples are merely specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this invention should be considered within the scope of protection of this invention.

Claims

1. A control method based on EVI (Electronic Water Quality Index) adaptive target water temperature output, characterized in that, When only the underfloor heating is turned on, the heat pump operates in an adaptive control mode; Step 1) If the interval between all indoor heating units reaching the desired temperature and then restarting is ≤ t, then the interval T between all indoor heating units reaching the desired temperature and then restarting is... 内环 Adjusted to T 设定 -T1; Step 2) Lower the target condensing temperature by one level, record the interval between restarting the operation after reaching the target condensing temperature, and make a judgment. Step 3) If the interval time is ≤ t, execute step 2) until the target condensing temperature drops to the lowest level. If the interval time is > t, then during the next restart operation after reaching the desired temperature, the T value for the floor heating indoor unit to restart after reaching the desired temperature will be adjusted. 内环 Adjusted to T 设定 -T2, T2 < T1, and increase the target condensing temperature by one level, while recording the interval between the next temperature reach and restart operation, and repeat step 3).

2. The control method based on EVI (Electro-Volume Identifier) ​​adaptive target water temperature output according to claim 1, characterized in that, When executing steps 1), 2), and 3), if the heat pump meets the exit conditions for adaptive control operation, the heat pump exits the adaptive control operation.

3. The control method based on EVI (Electro-Volume Identifier) ​​adaptive target water temperature output according to claim 2, characterized in that, The adaptive control operation exit conditions include power failure, fault, mode switch, and exiting energy-saving mode.

4. The control method based on EVI (Electro-Volume Identifier) ​​adaptive target water temperature output according to claim 1, characterized in that, The t is 60 min, T1 is 2℃, and T2 is 1℃.

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