Triple-working-condition anti-condensation control system and method

Abstract

The invention relates to the technical field of air conditioning, and particularly provides a triple-working-condition anti-condensation control system and method.The control system comprises a controller, an intelligent screen, a door and window sensor, a temperature and humidity sensor, a heat pump, a direct-expansion fresh air ventilator and a water valve, and the intelligent screen, the door and window sensor, the temperature and humidity sensor, the heat pump, the direct-expansion fresh air ventilator and the water valve are electrically connected with the controller; the control method comprises the steps that S1, the environment temperature in a room is obtained in real time; s2, room door and window opening and closing states are obtained in real time; s3, the maximum value of the dew point temperature of each room is screened out, the controller outputs an outlet water temperature adjusting signal to the heat pump according to the maximum value of the dew point temperature and a preset first temperature difference value, and issuing time I is set for execution; the indoor environment state is accurately collected through the temperature and humidity sensor 4, the door and window opening and closing state is detected through the door and window sensor, triple anti-condensation working conditions are designed corresponding to the environment state and the door and window state, the heat pump, the direct expansion fresh air ventilator and the water valve are adaptively adjusted in the different anti-condensation working conditions correspondingly, and the anti-condensation effect is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a triple working condition anti-condensation control system and method. Background Art

[0002] In a room equipped with radiant air conditioning, condensation is likely to occur when the indoor radiant surface temperature is lower than the indoor dew point.

[0003] The published Chinese patent, with publication number CN202166137U, discloses a radiation air conditioning system that can prevent condensation by changing water temperature, including: a radiation air conditioning system installed indoors; a heat pump for providing cold water or hot water to the radiation air conditioning system; a fresh air supply system for supplying fresh air to the room; the system also includes several dehumidifiers installed indoors and a central controller, wherein the central controller is provided with a sensor device for receiving indoor temperature and humidity changes, the central controller is connected to the heat pump for controlling the water temperature output by the heat pump; and is connected to the dehumidifier for controlling the opening and closing of the dehumidifier. This patent controls the dehumidifier to start dehumidification through the central controller, and at the same time increases the outlet water temperature of the heat pump, so that condensation will not occur in the room within a short period of time when the doors and windows are opened, and the dehumidifier reduces the humidity in the room and then reduces the outlet water temperature of the heat pump through the central controller, thereby ultimately avoiding condensation in the pipes in the room.

[0004] The radiation air conditioning system disclosed in the above patent has the following shortcomings:

[0005] 1. No door and window sensors are used, only temperature and humidity sensors are used, which cannot remind users to avoid condensation before the risk of condensation occurs when opening doors and windows. The risk of condensation cannot be avoided when high temperature and high humidity air enters the room;

[0006] 2. The operation of fresh air and dehumidification relies on the heat pump to provide cooling water. It is not possible to dehumidify independently when the heat pump provides high-temperature water. In this case, the heat pump still needs to output low-temperature water, and the anti-condensation effect is not good. Summary of the invention

[0007] In view of the shortcomings of the prior art mentioned above, an object of the present invention is to provide a triple working condition anti-condensation control system and method, which is used to solve the problem that the radiation air-conditioning system used in the prior art fails to detect the switch status of doors and windows to avoid condensation hazards and the fresh air dehumidification function cannot operate independently.

[0008] To achieve the above-mentioned and other related purposes, the present invention provides a triple-condition anti-condensation control system, which is installed indoors and is suitable for radiant air conditioning;

[0009] The control system includes a controller and a smart screen electrically connected to the controller, a door and window sensor, a temperature and humidity sensor, a heat pump, a direct expansion fresh air fan, and a water valve;

[0010] The controller is used to collect indoor environmental information and output corresponding control signals;

[0011] The smart screen is used for human-computer interaction, data transmission, and output of alarm signals;

[0012] The door and window sensor is used to collect room door and window switch signals;

[0013] The temperature and humidity sensor is used to collect temperature and humidity information, dew point temperature information, and radiation surface temperature information of the indoor environment;

[0014] The heat pump is used to provide cold water or hot water to the control system and change the water temperature at the radiation end according to the control signal output by the controller;

[0015] The direct expansion fresh air fan is used to reduce the indoor air dew point according to the control signal output by the controller;

[0016] The water valve is arranged at the radiation end of the room and is used to control the on / off state of the water circulation in the room.

[0017] A triple working condition anti-condensation control method, applied to the triple working condition anti-condensation control system, comprises the following steps:

[0018] S1, responding to the temperature and humidity information, dew point temperature information, and radiation surface temperature information in the room collected by the temperature and humidity sensor to obtain the ambient temperature in the room in real time;

[0019] S2, responding to the door and window switch information collected by the door and window sensor to obtain the door and window switch status of the room in real time;

[0020] S3. When the number of rooms is greater than 1, the maximum value of the dew point temperature of each room is screened out. The controller outputs an outlet water temperature adjustment signal to the heat pump according to the maximum dew point temperature + a preset first temperature difference and sets a sending time to execute. The heat pump supplies cold water or hot water according to the outlet water temperature adjustment signal.

[0021] In one embodiment of the present invention, the door and window sensor detects that the door and window that affects the dew point of the air in the room is in an open state;

[0022] When the room dew point temperature + the set dead zone temperature is higher than the radiation surface temperature, after t1 time, it enters the anti-condensation condition one; under this condition, the fresh air fan increases the air volume, the water valve of the room is closed, and the smart screen issues a door and window opening alarm to remind users to close the doors and windows in time.

[0023] In one embodiment of the present invention, when the room dew point temperature + the set dead zone temperature is greater than or equal to the radiation surface temperature, after t2 time, the anti-condensation condition two is entered; under this condition, the fresh air fan increases the air volume and lowers the evaporation temperature; the water valve of the room is opened, and the water valves of other rooms that have not entered the anti-condensation condition are closed; the controller outputs an outlet water temperature adjustment signal to the heat pump based on the maximum dew point temperature + the preset second temperature difference and sets the sending time two to execute, and the heat pump increases the cold water temperature based on the outlet water temperature adjustment signal.

[0024] In one embodiment of the present invention, when the room dew point temperature + the set dead zone temperature is greater than or equal to the radiation surface temperature, after t3 time, the anti-condensation condition three is entered; under this condition, the fresh air fan increases the air volume and lowers the evaporation temperature; the water valve of the room is opened, and the water valves of other rooms that have not entered the anti-condensation condition are closed; the heat pump switches to the heating mode, and its outlet water temperature is immediately issued and executed according to the first set temperature preset by the controller.

[0025] In one embodiment of the present invention, the door and window sensor detects that the door and window that affects the dew point of the air in the room is in a closed state;

[0026] When the room dew point temperature + the set dead zone temperature is greater than or equal to the radiation surface temperature, after t1 time, the anti-condensation condition 1 is entered; under this condition, the fresh air fan increases the air volume and the water valve of the room is closed.

[0027] In one embodiment of the present invention, when the room dew point temperature + the set dead zone temperature is greater than or equal to the radiation surface temperature, after t2 time, the anti-condensation condition 2 is entered; under this condition, the fresh air fan increases the air volume and lowers the evaporation temperature; the water valve of the room is opened, and the water valves of other rooms that have not entered the anti-condensation condition are closed; the heat pump outlet water temperature is immediately issued and executed according to the maximum dew point temperature + the second preset difference.

[0028] In one embodiment of the present invention, when the room dew point temperature + the set dead zone temperature is greater than or equal to the radiation surface temperature, after t3 time, the anti-condensation condition three is entered; under this condition, the fresh air fan increases the air volume and lowers the evaporation temperature; the water valve of the room is opened, and the water valves of other rooms that have not entered the anti-condensation condition are closed; the heat pump switches to the heating mode, and its outlet water temperature is immediately issued and executed according to the first set temperature set by the controller.

[0029] In one embodiment of the present invention, when there are multiple anti-condensation conditions in each room, the operation settings of the heat pump and the fresh air fan are set according to the maximum anti-condensation condition in each room, where anti-condensation condition one < anti-condensation condition two < anti-condensation condition three.

[0030] In one embodiment of the present invention, when the condensation working conditions of each room are not met, the normal working condition is entered after t4 time.

[0031] As described above, the triple working condition anti-condensation control system and method of the present invention has the following beneficial effects:

[0032] The present invention adopts door and window sensors, and the control system can obtain the opening and closing status of doors and windows in real time, and remind users to close the doors and windows before condensation is formed, so as to prevent high-temperature and high-humidity air from entering the room and eliminate the hidden danger of condensation; the present invention also adopts a direct expansion fresh air fan, which can be decoupled from the heat pump. While the direct expansion fresh air fan independently performs high-intensity dehumidification, the heat pump can output high-temperature cold water and low-temperature hot water, and the outlet water temperature is between 15-40°C. The direct expansion fresh air fan is not subject to the use conditions of the fresh air fan, and can independently operate the fresh air and dehumidification functions in various condensation conditions, thereby improving the anti-condensation effect of the control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Shown is a block diagram of the triple-condition anti-condensation control system disclosed in the present invention.

[0034] Component number description

[0035] Controller 1; smart screen 2; door and window sensor 3; temperature and humidity sensor 4; heat pump 5; direct expansion fresh air fan 6; water valve 7. DETAILED DESCRIPTION

[0036] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0037] See also Figure 1 It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0038] Example 1, please refer to Figure 1 This embodiment provides a triple working condition anti-condensation control system, which is installed indoors and is suitable for radiant air conditioning; the control system includes a controller 1 and a smart screen 2 electrically connected to the controller 1, a door and window sensor 3, a temperature and humidity sensor 4, a heat pump 5, a direct expansion fresh air fan 6, and a water valve 7;

[0039] The controller 1 is used to collect indoor environmental information and output corresponding control signals;

[0040] The smart screen 2 is used for human-computer interaction, data transmission, and output of alarm signals;

[0041] The door and window sensor 4 is used to collect room door and window switch signals;

[0042] The temperature and humidity sensor is used to collect temperature and humidity information, dew point temperature information, and radiation surface temperature information of the indoor environment;

[0043] The heat pump 5 is used to provide cold water or hot water to the control system and change the water temperature at the radiation end according to the control signal output by the controller 1;

[0044] The direct expansion fresh air fan 6 is used to reduce the indoor air dew point according to the control signal output by the controller 1;

[0045] The water valve 7 is arranged at the radiation end of the room and is used to control the on / off state of the water circulation in the room.

[0046] The present invention adopts door and window sensors 4, and the control system can obtain the opening and closing status of doors and windows in real time, and remind users to close doors and windows before condensation is formed, so as to prevent high-temperature and high-humidity air from entering the room and eliminate the hidden danger of condensation; the present invention also adopts a direct expansion fresh air fan 6, and the direct expansion fresh air fan 6 can be decoupled from the heat pump 5. While the direct expansion fresh air fan 6 independently performs high-intensity dehumidification, the heat pump 5 can output high-temperature cold water and low-temperature hot water, and the outlet water temperature is between 15-40°C. The direct expansion fresh air fan 6 is not subject to the use conditions of the fresh air fan, and can independently operate the fresh air and dehumidification functions in various condensation conditions, thereby improving the anti-condensation effect of the control system.

[0047] Embodiment 2: This embodiment provides a triple working condition anti-condensation control method, which is applied to the triple working condition anti-condensation control system described in Embodiment 1, and includes the following steps:

[0048] S1, responding to the temperature and humidity information, dew point temperature information, and radiation surface temperature information in the room collected by the temperature and humidity sensor to obtain the ambient temperature in the room in real time;

[0049] S2, responding to the door and window switch information collected by the door and window sensor 4 to obtain the door and window switch status of the room in real time;

[0050] S3. When the number of rooms is greater than 1, the maximum value of the dew point temperature of each room is screened out. The controller 1 outputs an outlet water temperature adjustment signal to the heat pump 5 according to the maximum dew point temperature + the preset first temperature difference and sets the execution time. The heat pump 5 supplies cold water or hot water according to the outlet water temperature adjustment signal.

[0051] Embodiment 3, based on Embodiment 2, in this embodiment, the door and window sensor 4 detects that the door and window that affects the air dew point in the room are in an open state.

[0052] When the room dew point temperature + the set dead zone temperature is lower than the radiation surface temperature, after t1 time, it enters the anti-condensation condition 1; under this condition, the fresh air fan increases the air volume, the water valve 7 of the room is closed, and the smart screen 2 issues a door and window opening alarm to remind the user to close the doors and windows in time.

[0053] When the room dew point temperature + the set dead zone temperature is greater than or equal to the radiation surface temperature, after t2 time, the anti-condensation condition 2 is entered; under this condition, the fresh air fan increases the air volume and lowers the evaporation temperature; the water valve 7 of the room is opened, and the water valves 7 of other rooms that have not entered the anti-condensation condition are closed; the controller 1 outputs an outlet water temperature adjustment signal to the heat pump 5 according to the maximum dew point temperature + the preset second temperature difference, and sets the sending time 2 for execution, and the heat pump 5 provides hot water or cold water according to the outlet water temperature adjustment signal.

[0054] When the room dew point temperature + the set dead zone temperature is greater than or equal to the radiation surface temperature, after t3 time, the anti-condensation condition three is entered; under this condition, the fresh air fan increases the air volume and lowers the evaporation temperature; the water valve 7 of the room is opened, and the water valves 7 of other rooms that have not entered the anti-condensation condition are closed; the heat pump 5 switches to the heating mode, and its outlet water temperature is immediately issued and executed according to the first set temperature preset by the controller 1.

[0055] When there are multiple anti-condensation working conditions in each room, the operation settings of the heat pump 5 and the fresh air fan are set to operate according to the maximum anti-condensation working condition in each room, where anti-condensation working condition 1 < anti-condensation working condition 2 < anti-condensation working condition 3. When the condensation working conditions in each room are not met, after t4 time, the normal working condition is entered.

[0056] Embodiment 4, based on Embodiment 2, in this embodiment, the door and window sensor 4 detects that the doors and windows that affect the air dew point in the room are in a closed state.

[0057] When the room dew point temperature + the set dead zone temperature is greater than or equal to the radiation surface temperature, after t1 time, the anti-condensation condition 1 is entered; under this condition, the fresh air fan increases the air volume and the water valve 7 of the room is closed.

[0058] When the room dew point temperature + the set dead zone temperature is greater than or equal to the radiation surface temperature, after t2 time, the anti-condensation condition 2 is entered; under this condition, the fresh air fan increases the air volume and lowers the evaporation temperature; the water valve 7 of the room is opened, and the water valves 7 of other rooms that have not entered the anti-condensation condition are closed; the outlet water temperature of the heat pump 5 is immediately issued and executed according to the maximum dew point temperature + the second preset difference.

[0059] When the room dew point temperature + the set dead zone temperature is greater than or equal to the radiation surface temperature, after t3 time, the anti-condensation condition three is entered; under this condition, the fresh air fan increases the air volume and lowers the evaporation temperature; the water valve 7 of the room is opened, and the water valves 7 of other rooms that have not entered the anti-condensation condition are closed; the heat pump 5 switches to the heating mode, and its outlet water temperature is immediately issued and executed according to the first set temperature set by the controller 1.

[0060] When there are multiple anti-condensation working conditions in each room, the operation settings of the heat pump 5 and the fresh air fan are set to operate according to the maximum anti-condensation working condition in each room, where anti-condensation working condition 1 < anti-condensation working condition 2 < anti-condensation working condition 3. When the condensation working conditions in each room are not met, after t4 time, the normal working condition is entered.

[0061] In summary, the present invention uses a combination of door and window sensors 3, temperature and humidity sensors 4, heat pumps 5, direct expansion fresh air blowers 6, and water valves 7. The temperature and humidity sensor 4 is used to accurately collect the indoor environmental state, and the door and window sensors 3 are used to detect the door and window switch states. A triple anti-condensation working condition is designed corresponding to the environmental state and the door and window state. The heat pump 5, direct expansion fresh air blower 6, and water valve 7 are adaptively adjusted in different anti-condensation working conditions, effectively improving the anti-condensation effect. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0062] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. Triple working condition anti-condensation control system, the control system is installed indoors and is suitable for radiant air conditioning; It is characterized in that The control system includes a controller and a smart screen electrically connected to the controller, a door and window sensor, a temperature and humidity sensor, a heat pump, a direct expansion fresh air fan, and a water valve; The controller is used to collect indoor environmental information and output corresponding control signals; The smart screen is used for human-computer interaction, data transmission, and output of alarm signals; The door and window sensor is used to collect room door and window switch signals; The temperature and humidity sensor is used to collect temperature and humidity information, dew point temperature information, and radiation surface temperature information of the indoor environment; The heat pump is used to provide cold water or hot water to the control system and change the water temperature at the radiation end according to the control signal output by the controller; The direct expansion fresh air fan is used to reduce the indoor air dew point according to the control signal output by the controller; The water valve is arranged at the radiation end of the room and is used to control the on / off state of the water circulation in the room.

2. A triple working condition anti-condensation control method, applied to the triple working condition anti-condensation control system according to claim 1, characterized in that: The steps include: S1, responding to the temperature and humidity information, dew point temperature information, and radiation surface temperature information in the room collected by the temperature and humidity sensor to obtain the ambient temperature in the room in real time; S2, responding to the door and window switch information collected by the door and window sensor to obtain the door and window switch status of the room in real time; S3. When the number of rooms is greater than 1, the maximum value of the dew point temperature of each room is screened out. The controller outputs an outlet water temperature adjustment signal to the heat pump according to the maximum dew point temperature + a preset first temperature difference and sets a sending time to execute. The heat pump supplies cold water or hot water according to the outlet water temperature adjustment signal.

3. The triple working condition anti-condensation control method according to claim 2, characterized in that: The door and window sensors detect that the doors and windows that affect the air dew point in the room are in an open state; When the room dew point temperature + the set dead zone temperature is lower than the radiation surface temperature, after t1 time, the anti-condensation condition 1 is entered; under this condition, the fresh air fan increases the air volume, the water valve of the room is closed, and the smart screen issues a door and window opening alarm to remind users to close the doors and windows in time.

4. The triple working condition anti-condensation control method according to claim 3, characterized in that: When the room dew point temperature + the set dead zone temperature is greater than or equal to the radiation surface temperature, after t2 time, it enters the anti-condensation condition two; under this condition, the fresh air fan increases the air volume and lowers the evaporation temperature; the water valve of the room is opened, and the water valves of other rooms that have not entered the anti-condensation condition are closed; the controller outputs an outlet water temperature adjustment signal to the heat pump based on the maximum dew point temperature + the preset second temperature difference and sets the sending time two for execution, and the heat pump provides hot water or cold water based on the outlet water temperature adjustment signal.

5. The triple working condition anti-condensation control method according to claim 3, characterized in that: When the room dew point temperature + the set dead zone temperature is greater than or equal to the radiation surface temperature, after t3 time, the anti-condensation condition three is entered; under this condition, the fresh air fan increases the air volume and lowers the evaporation temperature; the water valve of the room is opened, and the water valves of other rooms that have not entered the anti-condensation condition are closed; the heat pump switches to heating mode, and its outlet water temperature is immediately issued and executed according to the first set temperature preset by the controller.

6. The triple working condition anti-condensation control method according to claim 2, characterized in that: The door and window sensors detect that the doors and windows that affect the air dew point in the room are not opened; When the room dew point temperature + the set dead zone temperature is greater than or equal to the radiation surface temperature, after t1 time, the anti-condensation condition 1 is entered; under this condition, the fresh air fan increases the air volume and the water valve of the room is closed.

7. The triple working condition anti-condensation control method according to claim 6, characterized in that: When the room dew point temperature + the set dead zone temperature is greater than or equal to the radiation surface temperature, after t2 time, the anti-condensation condition 2 is entered; under this condition, the fresh air fan increases the air volume and lowers the evaporation temperature; the water valve of the room is opened, and the water valves of other rooms that have not entered the anti-condensation condition are closed; the heat pump outlet water temperature is immediately issued and executed according to the maximum dew point temperature + the second preset difference.

8. The triple working condition anti-condensation control method according to claim 6, characterized in that: When the room dew point temperature + the set dead zone temperature is greater than or equal to the radiation surface temperature, after t3 time, the anti-condensation condition three is entered; under this condition, the fresh air fan increases the air volume and lowers the evaporation temperature; the water valve of the room is opened, and the water valves of other rooms that have not entered the anti-condensation condition are closed; the heat pump switches to heating mode, and its outlet water temperature is immediately issued and executed according to the first set temperature set by the controller.

9. The triple working condition anti-condensation control method according to any one of claims 5 or 8, characterized in that: When there are multiple anti-condensation conditions in each room, the operation settings of the heat pump and the fresh air fan are set according to the maximum anti-condensation condition in each room, where anti-condensation condition one < anti-condensation condition two < anti-condensation condition three.

10. The triple working condition anti-condensation control method according to claim 9, characterized in that: When the condensation working conditions in each room are not met, the normal working conditions will be entered after t4 time.

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