Constant-temperature and constant-humidity air conditioning system and temperature and humidity control method

Abstract

The invention discloses a constant-temperature and constant-humidity air conditioning system and a temperature and humidity control method. The current first actual dry-bulb temperature and first actual dew-point temperature of an indoor space are obtained; determining a first dry-bulb temperature difference between the first actual dry-bulb temperature and a target dry-bulb temperature and a first dew-point temperature difference between the first actual dew-point temperature and a target dew-point temperature; based on the positive and negative values of the first actual dry-bulb temperature and the first actual dew-point temperature, the temperature and humidity of the constant-temperature and constant-humidity air conditioning system are preliminarily adjusted; determining a second dry-bulb temperature difference between the second actual dry-bulb temperature and the target dry-bulb temperature and a second dew-point temperature difference between the second actual dew-point temperature and the target dew-point temperature, and the temperature and humidity of the constant-temperature and constant-humidity air conditioning system are adjusted again based on the absolute value of the second dry-bulb temperature difference and the second dew-point temperature difference and the quadrant where the reference coordinate point is located, so that the indoor space roughly reaches the constant-temperature and constant-humidity state.

Description

Technical Field

[0001] The present invention relates to the technical field of constant temperature and humidity air conditioning systems, and in particular to a constant temperature and humidity air conditioning system and a temperature and humidity control method. Background Art

[0002] In the process of regulating the constant temperature and pressure of the indoor space, if the humidity of the indoor space does not meet the requirements, a humidifier is usually used to compensate; when the temperature of the indoor space does not meet the requirements, an electric heater is usually used to compensate.

[0003] However, electric heaters and humidifiers are used to control the constant temperature and constant pressure of the indoor space. The electric heaters and humidifiers require a large margin, which results in a large amount of energy consumption. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a constant temperature and humidity air conditioning system and a temperature and humidity control method, which can reduce the energy consumption during constant temperature and humidity control.

[0005] In a first aspect, an embodiment of the present application provides a temperature and humidity control method, the temperature and humidity control method comprising:

[0006] Acquire a current first actual dry-bulb temperature and a first actual dew-point temperature of the indoor space, and determine a first dry-bulb temperature difference between the first actual dry-bulb temperature and a target dry-bulb temperature and a first dew-point temperature difference between the first actual dew-point temperature and the target dew-point temperature;

[0007] Based on the positive and negative values ​​of the first actual dry-bulb temperature and the first actual dew-point temperature, preliminarily adjust the temperature and humidity of the constant temperature and humidity air-conditioning system, and obtain the current second actual dry-bulb temperature and second actual dew-point temperature of the indoor space;

[0008] Determine a second dry-bulb temperature difference between the second actual dry-bulb temperature and the target dry-bulb temperature and a second dew-point temperature difference between the second actual dew-point temperature and the target dew-point temperature, and adjust the temperature and humidity of the constant temperature and humidity air-conditioning system again based on the absolute values ​​of the second dry-bulb temperature difference and the second dew-point temperature difference.

[0009] According to some embodiments of the present invention, preliminarily adjusting the temperature and humidity of the constant temperature and humidity air conditioning system based on the positive and negative values ​​of the first actual dry-bulb temperature and the first actual dew point temperature includes:

[0010] The first dew point temperature difference and the first dry bulb temperature difference are respectively set as X and Y coordinates as reference coordinate points, and the quadrant of the reference coordinate point in the two-dimensional coordinate system is determined;

[0011] Based on the quadrant where the reference coordinate point is located, the temperature and humidity of the constant temperature and humidity air-conditioning system are preliminarily adjusted.

[0012] According to some embodiments of the present invention, the constant temperature and humidity air conditioning system includes an air circuit system and a water circuit system, and a humidifier and an electric heater are provided on the air flow channel of the air circuit system; a fan coil unit, a regulating valve and a water pump are provided on the water flow channel of the water circuit system, and the fan coil unit is located on the air flow channel of the air circuit system;

[0013] The preliminarily adjusting the temperature and humidity of the constant temperature and humidity air conditioning system based on the quadrant where the reference coordinate point is located includes:

[0014] If the reference coordinate point is in the first quadrant, the fan of the fan coil unit, the regulating valve and the water pump are controlled to open and adjust, and the humidifier and the electric heater are turned off;

[0015] If the reference coordinate point is in the second quadrant, the fan of the fan coil unit, the regulating valve, the water pump and the humidifier are controlled to open and adjust, and the electric heater is turned off;

[0016] If the reference coordinate point is in the third quadrant, the fan of the fan coil unit, the electric heater and the humidifier are controlled to be turned on and adjusted, and the regulating valve and the water pump are turned off;

[0017] If the reference coordinate point is in the fourth quadrant, the fan of the fan coil unit, the regulating valve, the water pump and the electric heater are controlled to open and adjust, and the humidifier is turned off.

[0018] According to some embodiments of the present invention, if the reference coordinate point is in the first quadrant, re-adjusting the temperature and humidity of the constant temperature and humidity air-conditioning system based on the absolute value of the second dry-bulb temperature difference and the second dew-point temperature difference and the quadrant where the reference coordinate point is located includes:

[0019] Determining that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference;

[0020] Control the fan of the fan coil unit to accelerate, the opening of the regulating valve to increase, and the speed of the water pump to decrease, and keep the electric heater and the humidifier closed; or,

[0021] Determining that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is less than a preset first set dew-point temperature difference;

[0022] Control the fan of the fan coil unit to accelerate, the opening of the regulating valve to increase, and the speed of the water pump to increase, and keep the electric heater and the humidifier closed; or,

[0023] Determining that the absolute value of the second dry-bulb temperature difference is less than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference;

[0024] The fan of the fan coil unit is controlled to slow down, the opening of the regulating valve is increased, and the speed of the water pump is reduced, and the electric heater and the humidifier are kept closed.

[0025] According to some embodiments of the present invention, if the reference coordinate point is in the second quadrant, re-adjusting the temperature and humidity of the constant temperature and humidity air-conditioning system based on the absolute value of the second dry-bulb temperature difference and the second dew-point temperature difference and the quadrant where the reference coordinate point is located includes:

[0026] Determining that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference;

[0027] Control the fan of the fan coil unit to accelerate, the opening of the regulating valve to increase, the speed of the water pump to increase, and the opening of the humidifier to increase, and keep the electric heater off; or,

[0028] Determining that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is less than a preset first set dew-point temperature difference;

[0029] Control the fan of the fan coil unit to accelerate, the opening of the regulating valve to increase, the speed of the water pump to increase, and the opening of the humidifier to decrease, and keep the electric heater off; or,

[0030] Determining that the absolute value of the second dry-bulb temperature difference is less than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference;

[0031] The fan of the fan coil unit is controlled to decrease, the opening of the regulating valve is increased, the speed of the water pump is reduced, the humidifier is turned off, and the electric heater is kept turned off.

[0032] According to some embodiments of the present invention, if the reference coordinate point is in the third quadrant, re-adjusting the temperature and humidity of the constant temperature and humidity air-conditioning system based on the absolute value of the second dry-bulb temperature difference and the second dew-point temperature difference and the quadrant where the reference coordinate point is located includes:

[0033] Determining that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference;

[0034] Control the fan of the fan coil unit to accelerate, the electric heater to increase its opening, and the humidifier to increase its opening, and keep the regulating valve and the water pump closed; or,

[0035] Determining that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is less than a preset first set dew-point temperature difference;

[0036] Control the fan of the fan coil unit to accelerate, the electric heater to increase the opening, and the humidifier to decrease the opening, and keep the regulating valve and the water pump closed; or,

[0037] Determining that the absolute value of the second dry-bulb temperature difference is less than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference;

[0038] The fan of the fan coil unit is controlled to accelerate, the opening of the electric heater is controlled to decrease, and the opening of the humidifier is controlled to increase, and the regulating valve and the water pump are kept closed.

[0039] According to some embodiments of the present invention, if the reference coordinate point is in the fourth quadrant, the temperature and humidity of the constant temperature and humidity air conditioning system are adjusted again based on the absolute value of the second dry-bulb temperature difference and the second dew point temperature difference and the quadrant where the reference coordinate point is located, including:

[0040] Determining that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference;

[0041] Control the fan of the fan coil unit to slow down, the opening of the regulating valve to increase, the speed of the water pump to decrease, and the opening of the electric heater to increase, and keep the humidifier closed; or,

[0042] Determining that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is less than a preset first set dew-point temperature difference;

[0043] Control the fan of the fan coil unit to accelerate, the opening of the regulating valve to decrease, the speed of the water pump to decrease, and the opening of the electric heater to increase, and keep the humidifier closed; or,

[0044] Determining that the absolute value of the second dry-bulb temperature difference is less than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference;

[0045] The fan of the fan coil unit is controlled to slow down, the opening of the regulating valve is increased, the speed of the water pump is reduced, and the opening of the electric heater is reduced, and the humidifier is kept closed.

[0046] According to some embodiments of the present invention, after re-adjusting the temperature and humidity of the constant temperature and humidity air-conditioning system based on the absolute value of the second dry-bulb temperature difference and the second dew-point temperature difference and the quadrant where the reference coordinate point is located, the temperature and humidity control method further includes:

[0047] Acquire a third actual dry-bulb temperature and a third actual dew-point temperature of the indoor space, and determine a third dry-bulb temperature difference between the third actual dry-bulb temperature and the target dry-bulb temperature and a third dew-point temperature difference between the third actual dew-point temperature and the target dew-point temperature;

[0048] Determining whether the absolute value of the third dry-bulb temperature difference is less than a preset second set dry-bulb temperature difference, and determining whether the absolute value of the third dew-point temperature difference is less than a preset second set dew-point temperature difference;

[0049] If the absolute value of the third dry-bulb temperature difference is less than the preset second set dry-bulb temperature difference and the absolute value of the third dew-point temperature difference is less than the preset second set dew-point temperature difference, stop adjusting the temperature and humidity of the constant temperature and humidity air-conditioning system.

[0050] According to some embodiments of the present invention, the temperature and humidity control method further includes:

[0051] If the absolute value of the third dry-bulb temperature difference is greater than the preset second set dry-bulb temperature difference and / or the absolute value of the third dew-point temperature difference is greater than the preset second set dew-point temperature difference, return to execute the acquisition of the current first actual dry-bulb temperature and the first actual dew-point temperature of the indoor space, and determine the first dry-bulb temperature difference between the first actual dry-bulb temperature and the target dry-bulb temperature and the first dew-point temperature difference between the first actual dew-point temperature and the target dew-point temperature.

[0052] In a second aspect, an embodiment of the present application provides a constant temperature and humidity air conditioning system, wherein the constant temperature and humidity air conditioning system comprises:

[0053] The air duct system is provided with an air flow channel, and a humidifier and an electric heater are provided on the air flow channel;

[0054] A water system, provided with a water flow channel, on which a fan coil unit, a regulating valve and a water pump are provided, wherein the fan coil unit is located on the air flow channel of the air system and is used to control the temperature and humidity of the air flow in the air flow channel;

[0055] The temperature and humidity control method is used to control the fan coil unit, the regulating valve, the water pump, the humidifier and the electric heater to control the temperature and humidity of the indoor space.

[0056] According to some embodiments of the present invention, the water flow channel includes a first channel, a second channel and a third channel, one end of the first channel is a water inlet, and the other end is connected to the water inlet of the fan coil unit, one end of the second channel is connected to the water outlet of the fan coil unit, and the other end is a water outlet, and the third channel is connected between the first channel and the second channel; wherein the connection position between the first channel and the third channel is a first transfer position, and the connection position between the second channel and the third channel is a second transfer position;

[0057] Wherein, the water pump is arranged in the first channel and is located between the first transfer position and the fan coil unit, and the regulating valve is arranged in the second transfer position; or, the water pump is arranged in the third channel, the regulating valve is arranged in the second channel and is located between the fan coil unit and the second transfer position; or, the water pump is arranged in the third channel, the regulating valve is arranged in the second channel and is located between the second transfer position and the water outlet.

[0058] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages: after determining the first dew point temperature difference and the first dry bulb temperature difference, the temperature and humidity of the indoor space can be preliminarily controlled based on the positive and negative values ​​of the first dew point temperature difference and the first dry bulb temperature difference, so that the temperature and humidity of the indoor space can be adjusted more consistently; then, based on the preliminary temperature and humidity control, the gap between the actual temperature and humidity of the indoor space and the target temperature and humidity is further narrowed according to the size of the second dew point temperature difference and the second dry bulb temperature difference, so that the temperature and humidity of the indoor space are roughly close to the target temperature and humidity, so as to meet the user's temperature and humidity requirements for the indoor space. It can be understood that the above method is used to adjust the temperature and humidity of the indoor space twice, which effectively avoids the energy waste caused by a large adjustment of the temperature and humidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 It is a schematic diagram of the overall process of the temperature and humidity control method according to an embodiment of the present invention;

[0060] Figure 2 A partial flow chart of a temperature and humidity control method according to an embodiment of the present invention;

[0061] Figure 3 A first structural schematic diagram of a constant humidity and constant temperature air conditioning system according to an embodiment of the present invention;

[0062] Figure 4 A second structural schematic diagram of a constant humidity and constant temperature air conditioning system according to an embodiment of the present invention;

[0063] Figure 5 Schematic diagram of the third structure of the constant humidity and constant temperature air-conditioning system according to an embodiment of the present invention.

[0064] The meanings of the reference numerals are as follows:

[0065] 100. Constant humidity and constant temperature air conditioning system; 110. Air path system; 111. Air flow channel; 112. Humidifier; 113. Electric heater; 114. Indoor space; 120. Water path system; 121. Water flow channel; 1211. First channel; 1212. Second channel; 1213. Third channel; 122. Fan coil unit; 123. Regulating valve; 124. Water pump. DETAILED DESCRIPTION

[0066] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0067] In the description of the present invention, it is necessary to understand that descriptions involving orientations, such as up, down, front, back, upper, lower, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0068] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first", "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0069] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0070] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0071] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0072] See also Figure 1 and Figure 3 , a temperature and humidity control method provided by an embodiment of the present invention is applied to a constant temperature and humidity air conditioning system, and the temperature and humidity control method includes:

[0073] S100 obtains a current first actual dry-bulb temperature and a first actual dew-point temperature of the indoor space 114, and determines a first dry-bulb temperature difference between the first actual dry-bulb temperature and a target dry-bulb temperature and a first dew-point temperature difference between the first actual dew-point temperature and a target dew-point temperature.

[0074] The indoor space 114 is provided with a thermometer and a dew point meter. The thermometer monitors the dry bulb temperature of the indoor space 114 in real time, that is, the current first actual dry bulb temperature. The dew point meter monitors the dew point temperature of the indoor space 114 in real time, that is, the current first actual dew point temperature. In other possible implementations, the indoor space 114 may also be provided with a humidifier for real-time monitoring of the actual humidity of the indoor space 114. The first actual dry bulb temperature and the actual humidity may also be used to calculate the required first actual dew point temperature.

[0075] And, the target dry bulb temperature is preset by the control system and is set specifically according to the needs of the user. Similarly, the target dew point temperature is also preset by the control system and is set specifically according to the needs of the user. It should be noted that, compared with judging the moisture content state of the air in the indoor space 114 by humidity, the dew point temperature can better reflect the moisture content state of the air.

[0076] Specifically, the first dry-bulb temperature difference is the difference between the first actual dry-bulb temperature and the target dry-bulb temperature; and the first dew-point temperature difference is the difference between the first actual dew-point temperature and the target dew-point temperature.

[0077] S200 preliminarily adjusts the temperature and humidity of the constant temperature and humidity air-conditioning system based on the positive and negative values ​​of the first actual dry-bulb temperature and the first actual dew-point temperature, and obtains the current second actual dry-bulb temperature and second actual dew-point temperature of the indoor space.

[0078] The constant temperature and humidity air conditioning system is provided with devices for controlling the temperature and humidity of the indoor space 114, such as a fan, a regulating valve 123, a water pump 124, an electric heater 113, a humidifier 112, and the like.

[0079] Specifically, the control system preliminarily adjusts the temperature and humidity of the constant temperature and humidity air-conditioning system based on the positive and negative values ​​of the first actual dry-bulb temperature and the first actual dew point temperature, such as controlling the fan, regulating valve 123, water pump 124, electric heater 113, humidifier 112 and other components, thereby controlling the temperature and humidity of the constant temperature and humidity air-conditioning system.

[0080] S300 determines a second dry-bulb temperature difference between the second actual dry-bulb temperature and the target dry-bulb temperature and a second dew-point temperature difference between the second actual dew-point temperature and the target dew-point temperature, and adjusts the temperature and humidity of the constant temperature and humidity air-conditioning system again based on the absolute values ​​of the second dry-bulb temperature difference and the second dew-point temperature difference.

[0081] After the temperature and humidity of the constant temperature and humidity air conditioning system are preliminarily adjusted, the thermometer also monitors the dry bulb temperature of the indoor space 114 in real time, that is, the current second actual dry bulb temperature, and the dew point meter monitors the dew point temperature of the indoor space 114 in real time, that is, the current second actual dew point temperature. In other possible implementations, a humidifier may also be provided in the indoor space 114 to monitor the actual humidity of the indoor space 114 in real time, and the second actual dry bulb temperature and the actual humidity may also be used to calculate the required second actual dew point temperature.

[0082] And, the second dry-bulb temperature difference is the difference between the second actual dry-bulb temperature and the target dry-bulb temperature; and the second dew-point temperature difference is the difference between the second actual dew-point temperature and the target dew-point temperature.

[0083] Specifically, after initially adjusting the temperature and humidity of the constant temperature and humidity air conditioning system, the control system further adjusts the temperature and humidity of the constant temperature and humidity air conditioning system based on the absolute value of the second dry-bulb temperature difference and the second dew point temperature difference, or more specifically, adjusts the components of the constant temperature and humidity air conditioning system, so that the indoor space 114 roughly reaches a constant temperature and constant pressure environment. For example, the control system makes the difference between the actual humidity in the indoor space 114 and the target humidity only between 0% and 7%, and makes the difference between the actual temperature in the indoor space 114 and the target temperature only between 0 and 5 degrees.

[0084] In summary, in steps S100 to S300, after determining the first dew point temperature difference and the first dry bulb temperature difference, the temperature and humidity of the indoor space 114 can be preliminarily controlled based on the positive and negative values ​​of the first dew point temperature difference and the first dry bulb temperature difference. More specifically, the constant temperature and humidity device is preliminarily adjusted so that the temperature and humidity of the indoor space 114 are adjusted more consistently; then, based on the preliminary temperature and humidity control, the gap between the actual temperature and humidity of the indoor space 114 and the target temperature and humidity is further reduced according to the size of the second dew point temperature difference and the second dry bulb temperature difference, so that the temperature and humidity of the indoor space 114 are roughly close to the target temperature and humidity, so as to meet the user's temperature and humidity requirements for the indoor space 114. It can be understood that the temperature and humidity of the indoor space 114 are adjusted twice in the above manner, which effectively avoids the energy waste caused by the large adjustment of the temperature and humidity.

[0085] In some embodiments, preliminarily adjusting the temperature and humidity of the constant temperature and humidity air conditioning system based on the positive and negative values ​​of the first actual dry-bulb temperature and the first actual dew point temperature includes steps S201-S202.

[0086] S201 sets the first dew point temperature difference and the first dry bulb temperature difference as X and Y coordinates as reference coordinate points, and determines the quadrant of the reference coordinate point in a two-dimensional coordinate system.

[0087] Specifically, the first dew point temperature difference is used as the X-axis coordinate, and the first dry-bulb temperature difference is used as the Y-axis coordinate. Therefore, the first dew point temperature difference and the first dry-bulb temperature difference are set as reference coordinate points, and this is used as an example to illustrate the present application scheme. Of course, the first dry-bulb temperature difference can also be used as the X-axis coordinate, and the first dew point temperature difference can be used as the Y-axis coordinate, which is not described in detail. Then, based on the values ​​of the first dew point temperature difference and the first dry-bulb temperature difference, the quadrant of the reference coordinate point in the two-dimensional coordinate system is determined, for example, the reference coordinate point is located in the first quadrant, the second quadrant, the third quadrant, or the fourth quadrant.

[0088] S202 preliminarily adjusts the temperature and humidity of the constant temperature and humidity air conditioning system based on the quadrant where the reference coordinate point is located.

[0089] In the integrated steps S201-S202, the first dew point temperature difference and the first dry bulb temperature difference are the X and Y coordinates of the reference coordinate point, the quadrants of the first dew point temperature difference and the first dry bulb temperature difference in the two-dimensional coordinate system are determined, and the temperature and humidity of the indoor space 114 are preliminarily controlled based on the quadrants, so that the temperature and humidity of the indoor space 114 are adjusted more consistently; then, based on the preliminary temperature and humidity control, the gap between the actual temperature and humidity of the indoor space 114 and the target temperature and humidity is further narrowed according to the size of the second dew point temperature difference and the second dry bulb temperature difference, so that the temperature and humidity of the indoor space 114 are roughly close to the target temperature and humidity, so as to meet the user's temperature and humidity requirements for the indoor space 114. It can be understood that the temperature and humidity of the indoor space 114 are adjusted twice in the above manner, which effectively avoids the energy waste caused by the large adjustment of the temperature and humidity.

[0090] In a further embodiment, the temperature and humidity of the constant temperature and humidity air-conditioning system are preliminarily adjusted, more precisely, the components of the constant temperature and humidity air-conditioning system are preliminarily opened and closed for adjustment; accordingly, the opening and closing states of the components of the constant temperature and humidity air-conditioning system are kept unchanged, and the temperature and humidity of the constant temperature and humidity air-conditioning system are adjusted based on the absolute value of the second dry-bulb temperature difference and the second dew point temperature difference.

[0091] Specifically, in step S300, the temperature and humidity of the constant temperature and humidity air conditioning system are adjusted based on the quadrant where the reference coordinate point is located. Specifically, on the basis of retaining the preliminary adjustment of step S200, the components of the constant temperature and humidity air conditioning system are further adjusted, rather than adjusting step S300 without S200. For example, in step S200, the electric heater 113 and the humidifier 112 are in the off state, and accordingly, in step S300, the electric heater 113 and the humidifier 112 are still kept in the off state, and the control system only controls the components turned on in step S200.

[0092] In some embodiments, see Figure 1 and Figure 3 The constant temperature and humidity air conditioning system includes an air circuit system 110 and a water circuit system 120. A humidifier 112 and an electric heater 113 are provided on the air flow channel 111 of the air circuit system 110; a fan coil 122, a regulating valve 123 and a water pump 124 are provided on the water flow channel 121 of the water circuit system 120. The fan coil 122 is located on the air flow channel 111 of the air circuit system 110.

[0093] The step of preliminarily adjusting the temperature and humidity of the constant temperature and humidity air conditioning system based on the quadrant where the reference coordinate point is located includes the following steps S301 to S304. Among them, S301 to S304 are parallel steps.

[0094] S301: If the reference coordinate point is in the first quadrant, the fan of the fan coil unit 122, the regulating valve 123 and the water pump 124 are controlled to open and adjust, and the humidifier 112 and the electric heater 113 are turned off.

[0095] Among them, the reference coordinate point is in the first quadrant, that is, the first actual dry-bulb temperature is greater than the target dry-bulb temperature, and the first actual dew-point temperature is greater than the target dew-point temperature. Therefore, the humidifier 112 and the electric heater 113 are turned off, and the control system controls the fan of the fan coil 122, the regulating valve 123 and the water pump 124 to open and adjust. More specifically, by controlling the water system 120, the dry-bulb temperature and dew-point temperature of the indoor space 114 are preliminarily reduced.

[0096] S302: If the reference coordinate point is in the second quadrant, the fan of the fan coil unit 122, the regulating valve 123, the water pump 124 and the humidifier 112 are controlled to open and adjust, and the electric heater 113 is turned off.

[0097] Among them, the reference coordinate point is in the second quadrant, that is, the first actual dry-bulb temperature is greater than the target dry-bulb temperature, and the first actual dew-point temperature is less than the target dew-point temperature. Therefore, the electric heater 113 is turned off, and the control system controls the fan of the fan coil 122, the regulating valve 123, the water pump 124 and the humidifier 112 to open and adjust. More specifically, by controlling the water system 120, the dry-bulb temperature and dew-point temperature of the indoor space 114 are preliminarily controlled, and by opening the humidifier 112, the humidity of the indoor space 114 is preliminarily compensated.

[0098] S303: If the reference coordinate point is in the third quadrant, the fan of the fan coil unit 122, the electric heater 113 and the humidifier 112 are controlled to be turned on and regulated, and the regulating valve 123 and the water pump 124 are closed.

[0099] The reference coordinate point is in the third quadrant, that is, the first actual dry bulb temperature is less than the target dry bulb temperature, and the first actual dew point temperature is less than the target dew point temperature, so the control system controls the fan of the fan coil unit 122, the electric heater 113, and the humidifier 112 to turn on and adjust. The fan of the fan coil unit 122 is turned on to speed up the airflow in the airflow channel 111, thereby increasing the dry bulb temperature and dew point temperature of the indoor space 114. At the same time, the electric heater 113 is turned on to increase the temperature of the airflow, thereby increasing the temperature of the indoor space 114. The humidifier 112 is turned on to increase the humidity of the airflow in the airflow channel 111, thereby increasing the humidity of the indoor space 114.

[0100] S304: If the reference coordinate point is in the fourth quadrant, the fan of the fan coil unit 122, the regulating valve 123, the water pump 124 and the electric heater 113 are controlled to open and adjust, and the humidifier 112 is closed.

[0101] Among them, the reference coordinate point is in the fourth quadrant, that is, the first actual dry-bulb temperature is less than the target dry-bulb temperature, and the first actual dew-point temperature is greater than the target dew-point temperature. Therefore, the humidifier 112 is turned off, and the control system controls the fan of the fan coil 122, the regulating valve 123, the water pump 124 and the electric heater 113 to open and adjust. More specifically, by controlling the water system 120, the dry-bulb temperature and dew-point temperature of the indoor space 114 are preliminarily controlled, and by turning on the electric heater 113, the temperature of the indoor space 114 is preliminarily compensated.

[0102] It should be noted that in steps S301 to S304, if the initial state of the fan coil 122, the regulating valve 123, the water pump 124, the electric heater 113 and the humidifier 112 is a state that needs to be adjusted, then there is no need to adjust the device. For example, in step S301, when it is determined that the reference coordinate point is in the first quadrant, the fan, regulating valve 123, and water pump 124 of the fan coil 122 are initially in an open state, and the control system automatically defaults to turning on the fan, regulating valve 123, and water pump 124 of the fan coil 122, and only controls the electric heater 113 and the humidifier 112 to be turned off. Of course, if the initial state of the electric heater 113 and the humidifier 112 is in an off state, the control system automatically defaults to turning off the electric heater 113 and the humidifier 112, which will not be explained one by one.

[0103] It can be seen from the above that in order to control the temperature and humidity of the indoor space 114, the temperature and humidity of the indoor space 114 are mainly controlled by controlling the water system 120. More specifically, the fan coil 122 can directly control the temperature and humidity of the indoor space 114 in most cases. In a few cases, only a small amount of electric heating heat and the humidification amount of the humidifier 112 are needed for compensation, thereby avoiding the problem of easy oscillation caused by multi-target control and achieving the reduction of electric heating and humidifier 112, while avoiding the disorder of the control functions of dehumidification, cooling, heating and humidification functions.

[0104] In addition, in steps S301 to S304, when specifically controlling the device in the open state, the temperature and humidity of the indoor space 114 are controlled. Specifically, method 1 can be implemented using a PID algorithm plus a fuzzy algorithm; method 2 can be implemented using a genetic algorithm. Among them, the implementation of method 1 requires the definition of the adjustable range of the independent variable parameters, and the expert data needs to be modified as necessary according to different application scenarios. The advantage is that compared with the traditional PID algorithm, the Kp, Ki, and Kd parameters can be self-tuned. This is not described in detail. Method 2 can generate the optimal parameter domain for the specific project site through crossover, mutation and fitness functions based on the selected sample space, with a high degree of automation, which is not described in detail.

[0105] In some embodiments, see Figure 1 and Figure 2 If the reference coordinate point is in the first quadrant, the temperature and humidity of the constant temperature and humidity air-conditioning system are adjusted again based on the absolute values ​​of the second dry-bulb temperature difference and the second dew-point temperature difference and the quadrant where the reference coordinate point is located, including steps A1-A2; or, B1-B2; or, C1-C2.

[0106] A1 determines that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determines that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference.

[0107] A2 controls the fan of the fan coil unit 122 to accelerate, the opening of the regulating valve 123 to increase, and the speed of the water pump 124 to decrease, and keeps the electric heater 113 and the humidifier 112 closed.

[0108] Among them, in step A1, it is determined that the second actual dry-bulb temperature is greatly different from the target dry-bulb temperature, and the second actual dew-point temperature is greatly different from the target dew-point temperature; in step A2, the control system controls the fan of the fan coil 122 to accelerate, the opening of the regulating valve 123 to increase, and the speed of the water pump 124 to decrease, and keeps the electric heater 113 and the humidifier 112 closed, thereby reducing the difference between the second actual dry-bulb temperature and the target dry-bulb temperature, and reducing the difference between the second actual dew-point temperature and the target dew-point temperature, so that the actual temperature of the indoor space 114 is close to the target temperature, and the actual humidity of the indoor space 114 is close to the target humidity.

[0109] or,

[0110] B1 determines that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determines that the absolute value of the second dew-point temperature difference is less than a preset first set dew-point temperature difference.

[0111] B2 controls the fan of the fan coil unit 122 to accelerate, the opening of the regulating valve 123 to increase, and the speed of the water pump 124 to increase, and keeps the electric heater 113 and the humidifier 112 closed.

[0112] Among them, in step B1, it is determined that the second actual dry-bulb temperature is greatly different from the target dry-bulb temperature, and the second actual dew-point temperature is less different from the target dew-point temperature; in step B2, the control system controls the fan of the fan coil 122 to accelerate, the opening of the regulating valve 123 to increase, and the speed of the water pump 124 to decrease, and keeps the electric heater 113 and the humidifier 112 closed, which is mainly used to reduce the difference between the second actual dry-bulb temperature and the target dry-bulb temperature, and of course also reduces the difference between the second actual dew-point temperature and the target dew-point temperature, so that the actual temperature of the indoor space 114 is close to the target temperature, and the actual humidity of the indoor space 114 is close to the target humidity.

[0113] or,

[0114] C1 determines that the absolute value of the second dry-bulb temperature difference is smaller than a preset first set dry-bulb temperature difference, and determines that the absolute value of the second dew-point temperature difference is larger than a preset first set dew-point temperature difference.

[0115] C2 controls the fan of the fan coil unit 122 to slow down, the opening of the regulating valve 123 to increase, and the speed of the water pump 124 to decrease, and keeps the electric heater 113 and the humidifier 112 closed.

[0116] Among them, in step C1, it is determined that the difference between the second actual dry-bulb temperature and the target dry-bulb temperature is small, and the difference between the second actual dew-point temperature and the target dew-point temperature is large; in step C2, the control system controls the fan of the fan coil unit 122 to slow down, the opening of the regulating valve 123 to increase, and the speed of the water pump 124 to decrease, and keeps the electric heater 113 and the humidifier 112 closed, which is mainly used to reduce the difference between the second actual dew-point temperature and the target dew-point temperature, and of course also reduces the difference between the second actual dry-bulb temperature and the target dry-bulb temperature, so that the actual temperature of the indoor space 114 is close to the target temperature, and the actual humidity of the indoor space 114 is close to the target humidity.

[0117] In some embodiments, if the reference coordinate point is in the second quadrant, the temperature and humidity of the constant temperature and humidity air-conditioning system are adjusted again based on the absolute values ​​of the second dry-bulb temperature difference and the second dew point temperature difference and the quadrant where the reference coordinate point is located, including steps D1-D2; or, E1-E2; or, F1-F2.

[0118] D1 determines that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determines that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference.

[0119] D2 controls the fan of the fan coil unit 122 to accelerate, the opening of the regulating valve 123 to increase, the speed of the water pump 124 to increase, and the opening of the humidifier 112 to increase, and keeps the electric heater 113 closed.

[0120] Among them, in step D1, it is determined that the second actual dry-bulb temperature is greatly different from the target dry-bulb temperature, and the second actual dew-point temperature is greatly different from the target dew-point temperature; in step D2, the control system controls the fan of the fan coil 122 to accelerate, the opening of the regulating valve 123 to increase, the speed of the water pump 124 to increase, and the opening of the humidifier 112 to increase, and keeps the electric heater 113 closed, thereby reducing the difference between the second actual dry-bulb temperature and the target dry-bulb temperature, and reducing the difference between the second actual dew-point temperature and the target dew-point temperature, so that the actual temperature of the indoor space 114 is close to the target temperature, and the actual humidity of the indoor space 114 is close to the target humidity.

[0121] or,

[0122] E1 determines that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determines that the absolute value of the second dew-point temperature difference is less than a preset first set dew-point temperature difference.

[0123] E2 controls the fan of the fan coil unit 122 to accelerate, the opening of the regulating valve 123 to increase, the speed of the water pump 124 to increase, the opening of the humidifier 112 to decrease, and keeps the electric heater 113 closed.

[0124] Among them, in step E1, it is determined that the second actual dry-bulb temperature is greatly different from the target dry-bulb temperature, and the second actual dew-point temperature is less different from the target dew-point temperature; in step E2, the control system controls the fan of the fan coil 122 to accelerate, the opening of the regulating valve 123 to increase, the speed of the water pump 124 to increase, and the opening of the humidifier 112 to decrease, and keeps the electric heater 113 closed, which is mainly used to reduce the difference between the second actual dry-bulb temperature and the target dry-bulb temperature, and of course also reduces the difference between the second actual dew-point temperature and the target dew-point temperature, so that the actual temperature of the indoor space 114 is close to the target temperature, and the actual humidity of the indoor space 114 is close to the target humidity.

[0125] or,

[0126] F1 determines that the absolute value of the second dry-bulb temperature difference is less than a preset first set dry-bulb temperature difference, and determines that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference.

[0127] F2 controls the fan of the fan coil unit 122 to decrease, the opening of the regulating valve 123 to increase, the speed of the water pump 124 to decrease, the humidifier 112 to turn off, and keeps the electric heater 113 turned off.

[0128] Among them, in step F1, it is determined that the difference between the second actual dry-bulb temperature and the target dry-bulb temperature is small, and the difference between the second actual dew-point temperature and the target dew-point temperature is large; in step F2, the control system controls the fan of the fan coil 122 to be reduced, the opening of the regulating valve 123 to be increased, the speed of the water pump 124 to be reduced, and the humidifier 112 to be turned off, and the electric heater 113 is kept turned off, which is mainly used to reduce the difference between the second actual leakage temperature and the target dew-point temperature, and of course also reduces the difference between the second actual dry-bulb temperature and the target dry-bulb temperature, so that the actual temperature of the indoor space 114 is close to the target temperature, and the actual humidity of the indoor space 114 is close to the target humidity.

[0129] In some embodiments, if the reference coordinate point is in the third quadrant, the temperature and humidity of the constant temperature and humidity air-conditioning system are adjusted again based on the absolute values ​​of the second dry-bulb temperature difference and the second dew point temperature difference and the quadrant where the reference coordinate point is located, including steps G1-G2; or, H1-H2; or, i 1-i2.

[0130] G1 determines that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determines that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference.

[0131] G2 controls the fan of the fan coil unit 122 to accelerate, the electric heater 113 to increase its opening, and the humidifier 112 to increase its opening, and keeps the regulating valve 123 and the water pump 124 closed.

[0132] Among them, in step G1, it is determined that the second actual dry-bulb temperature is greatly different from the target dry-bulb temperature, and the second actual dew-point temperature is greatly different from the target dew-point temperature; in step G2, the control system controls the fan of the fan coil 122 to accelerate, the opening of the electric heater 113 to increase, and the opening of the humidifier 112 to increase, and keeps the regulating valve 123 and the water pump 124 closed, thereby reducing the difference between the second actual dry-bulb temperature and the target dry-bulb temperature, and reducing the difference between the second actual dew-point temperature and the target dew-point temperature, so that the actual temperature of the indoor space 114 is close to the target temperature, and the actual humidity of the indoor space 114 is close to the target humidity.

[0133] or,

[0134] H1 determines that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determines that the absolute value of the second dew-point temperature difference is less than a preset first set dew-point temperature difference.

[0135] H2 controls the fan of the fan coil unit 122 to accelerate, the opening of the electric heater 113 to increase, and the opening of the humidifier 112 to decrease, and keeps the regulating valve 123 and the water pump 124 closed.

[0136] Among them, in step B1, it is determined that the second actual dry-bulb temperature is greatly different from the target dry-bulb temperature, and the second actual dew-point temperature is less different from the target dew-point temperature; in step B2, the control system controls the fan of the fan coil 122 to accelerate, the electric heater 113 to increase the opening, and the humidifier 112 to decrease the opening, and keeps the regulating valve 123 and the water pump 124 closed, which is mainly used to reduce the difference between the second actual dry-bulb temperature and the target dry-bulb temperature, and of course also reduces the difference between the second actual dew-point temperature and the target dew-point temperature, so that the actual temperature of the indoor space 114 is close to the target temperature, and the actual humidity of the indoor space 114 is close to the target humidity.

[0137] or,

[0138] i 1 determines that the absolute value of the second dry-bulb temperature difference is smaller than the preset first set dry-bulb temperature difference, and determines that the absolute value of the second dew-point temperature difference is greater than the preset first set dew-point temperature difference.

[0139] i2 controls the fan of the fan coil unit 122 to accelerate, the opening of the electric heater 113 to decrease, and the opening of the humidifier 112 to increase, and keeps the regulating valve 123 and the water pump 124 closed.

[0140] Among them, in step C1, it is determined that the difference between the second actual dry-bulb temperature and the target dry-bulb temperature is small, and the difference between the second actual dew-point temperature and the target dew-point temperature is large; in step C2, the control system controls the fan of the fan coil 122 to accelerate, the opening of the electric heater 113 to decrease, and the opening of the humidifier 112 to increase, and keeps the regulating valve 123 and the water pump 124 closed, which is mainly used to reduce the difference between the second actual dew-point temperature and the target dew-point temperature, and of course also reduces the difference between the second actual dry-bulb temperature and the target dry-bulb temperature, so that the actual temperature of the indoor space 114 is close to the target temperature, and the actual humidity of the indoor space 114 is close to the target humidity.

[0141] In some embodiments, if the reference coordinate point is in the fourth quadrant, the temperature and humidity of the constant temperature and humidity air-conditioning system are adjusted again based on the absolute values ​​of the second dry-bulb temperature difference and the second dew point temperature difference and the quadrant where the reference coordinate point is located, including steps J1-J2; or, K1-K2; or, L1-L2.

[0142] J1 determines that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determines that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference.

[0143] J2 controls the fan of the fan coil unit 122 to slow down, the opening of the regulating valve 123 to increase, the speed of the water pump 124 to decrease, and the opening of the electric heater 113 to increase, and keeps the humidifier 112 closed.

[0144] Among them, in step J1, it is determined that the second actual dry-bulb temperature is greatly different from the target dry-bulb temperature, and the second actual dew-point temperature is greatly different from the target dew-point temperature; in step J2, the control system controls the fan of the fan coil 122 to slow down, the opening of the regulating valve 123 to increase, the speed of the water pump 124 to decrease, and the opening of the electric heater 113 to increase, and keeps the humidifier 112 closed, thereby reducing the difference between the second actual dry-bulb temperature and the target dry-bulb temperature, and reducing the difference between the second actual dew-point temperature and the target dew-point temperature, so that the actual temperature of the indoor space 114 is close to the target temperature, and the actual humidity of the indoor space 114 is close to the target humidity.

[0145] or,

[0146] K1 determines that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determines that the absolute value of the second dew-point temperature difference is less than a preset first set dew-point temperature difference.

[0147] K2 controls the fan of the fan coil unit 122 to accelerate, the opening of the regulating valve 123 to decrease, the speed of the water pump 124 to decrease, the opening of the electric heater 113 to increase, and keeps the humidifier 112 closed.

[0148] Among them, in step K1, it is determined that the second actual dry-bulb temperature is greatly different from the target dry-bulb temperature, and the second actual dew-point temperature is less different from the target dew-point temperature; in step K2, the control system controls the fan of the fan coil 122 to accelerate, the opening of the regulating valve 123 to decrease, the speed of the water pump 124 to decrease, and the opening of the electric heater 113 to increase, and keeps the humidifier 112 closed, which is mainly used to reduce the difference between the second actual dry-bulb temperature and the target dry-bulb temperature, and of course also reduces the difference between the second actual dew-point temperature and the target dew-point temperature, so that the actual temperature of the indoor space 114 is close to the target temperature, and the actual humidity of the indoor space 114 is close to the target humidity.

[0149] or,

[0150] L1 determines that the absolute value of the second dry-bulb temperature difference is smaller than the preset first set dry-bulb temperature difference, and determines that the absolute value of the second dew-point temperature difference is greater than the preset first set dew-point temperature difference.

[0151] L2 controls the fan of the fan coil unit 122 to slow down, the opening of the regulating valve 123 to increase, the speed of the water pump 124 to decrease, and the opening of the electric heater 113 to decrease, and keeps the humidifier 112 closed.

[0152] Among them, in step L1, it is determined that the difference between the second actual dry-bulb temperature and the target dry-bulb temperature is small, and the difference between the second actual dew-point temperature and the target dew-point temperature is large; in step L2, the control system controls the fan of the fan coil 122 to slow down, the opening of the regulating valve 123 to increase, the speed of the water pump 124 to decrease, and the opening of the electric heater 113 to decrease, and keeps the humidifier 112 closed, which is mainly used to reduce the difference between the second actual dew-point temperature and the target dew-point temperature, and of course also reduces the difference between the second actual dry-bulb temperature and the target dry-bulb temperature, so that the actual temperature of the indoor space 114 is close to the target temperature, and the actual humidity of the indoor space 114 is close to the target humidity.

[0153] It should be noted that in steps A1 to L1, when specifically controlling the device in the open state, the temperature and humidity of the indoor space 114 are controlled. Specifically, method 1 can be implemented using a PID algorithm plus a fuzzy algorithm; method 2 can be implemented using a genetic algorithm. Among them, the implementation of method 1 requires the definition of the adjustable range of the independent variable parameters, and the expert data needs to be modified as necessary according to different application scenarios. The advantage is that compared with the traditional PID algorithm, the Kp, Ki, and Kd parameters can be self-tuned, which is not described in detail. Method 2 can generate the optimal parameter domain for the specific project site based on the selected sample space through crossover, mutation and fitness functions, with a high degree of automation, which is not described in detail.

[0154] In some embodiments, reference Figures 1 to 3 After the temperature and humidity of the constant temperature and humidity air-conditioning system are adjusted again based on the absolute values ​​of the second dry-bulb temperature difference and the second dew-point temperature difference and the quadrant where the reference coordinate point is located, the temperature and humidity control method further includes steps S501-S504.

[0155] S501 obtains a third actual dry-bulb temperature and a third actual dew-point temperature of the indoor space 114, and determines a third dry-bulb temperature difference between the third actual dry-bulb temperature and a target dry-bulb temperature and a third dew-point temperature difference between the third actual dew-point temperature and the target dew-point temperature.

[0156] After adjusting the temperature and humidity of the constant temperature and humidity air conditioning system again, the thermometer also monitors the dry bulb temperature of the indoor space 114 in real time, that is, the current third actual dry bulb temperature, and the dew point meter monitors the dew point temperature of the indoor space 114 in real time, that is, the current third actual dew point temperature. In other possible implementations, a humidifier may also be provided in the indoor space 114 to monitor the actual humidity of the indoor space 114 in real time, and the third actual dry bulb temperature and the actual humidity may also be used to calculate the required third actual dew point temperature.

[0157] And, the third dry-bulb temperature difference is the difference between the third actual dry-bulb temperature and the target dry-bulb temperature; and the third dew-point temperature difference is the difference between the third actual dew-point temperature and the target dew-point temperature.

[0158] S502 determines whether the absolute value of the third dry-bulb temperature difference is less than a preset second set dry-bulb temperature difference, and determines whether the absolute value of the third dew-point temperature difference is less than a preset second set dew-point temperature difference.

[0159] Among them, the first set dry-bulb temperature difference and the second set dry-bulb temperature difference are set the same, of course, they can also be set differently, according to actual needs; similarly, the first set dew point temperature difference and the second set dew point temperature difference are set the same, of course, they can also be set differently, according to actual needs.

[0160] S503 If the absolute value of the third dry-bulb temperature difference is less than the preset second set dry-bulb temperature difference and the absolute value of the third dew-point temperature difference is less than the preset second set dew-point temperature difference, stop adjusting the temperature and humidity of the constant temperature and humidity air-conditioning system.

[0161] S504 If the absolute value of the third dry-bulb temperature difference is greater than the preset second set dry-bulb temperature difference and / or the absolute value of the third dew-point temperature difference is greater than the preset second set dew-point temperature difference, return to execute the acquisition of the current first actual dry-bulb temperature and the first actual dew-point temperature of the indoor space 114, and determine the first dry-bulb temperature difference between the first actual dry-bulb temperature and the target dry-bulb temperature and the first dew-point temperature difference between the first actual dew-point temperature and the target dew-point temperature.

[0162] In the comprehensive steps S501 to S504, in step S501, after the temperature and humidity of the constant temperature and humidity air-conditioning system are adjusted again, the control system obtains the current third actual dry-bulb temperature and the third actual dew-point temperature of the indoor space 114 every 20 seconds or so, and calculates the third dry-bulb temperature difference between the third actual dry-bulb temperature and the target dry-bulb temperature and the third dew-point temperature difference between the third actual dew-point temperature and the target dew-point temperature; in step S502, the absolute value of the third dry-bulb temperature difference is compared with the preset second set dry-bulb temperature difference to determine whether the absolute value of the third dry-bulb temperature difference is less than the preset second set dry-bulb temperature difference; at the same time, the absolute value of the third dew-point temperature difference is compared with the preset third set dry-bulb temperature difference to determine whether the absolute value of the third dew-point temperature difference is less than the preset second set dew-point temperature difference. In step S503, if the absolute value of the third dry-bulb temperature difference is less than the preset second set dry-bulb temperature difference and the absolute value of the third dew-point temperature difference is less than the preset second set dew-point temperature difference, the temperature and humidity of the constant temperature and humidity air-conditioning system is stopped from being adjusted, from which it can be inferred that the actual temperature of the indoor space 114 is close to the target temperature, and the actual humidity of the indoor space 114 is close to the target humidity. Therefore, the control system defaults that the temperature and humidity of the indoor space 114 meet the user's requirements, and thus stops adjusting the temperature and humidity of the constant temperature and humidity air-conditioning system. In step S504, if the absolute value of the third dry-bulb temperature difference is greater than the preset second set dry-bulb temperature difference and / or the absolute value of the third dew-point temperature difference is greater than the preset second set dew-point temperature difference, from which it can be inferred that the temperature and humidity of the indoor space 114 do not meet the user's requirements, and the control system returns to execute step S100 to readjust the temperature and humidity of the indoor space 114.

[0163] The present application also discloses a constant temperature and humidity air conditioning system, including an air circuit system 110 and a water circuit system 120. The air circuit system 110 is provided with an air flow channel 111, on which a humidifier 112 and an electric heater 113 are provided; the water circuit system 120 is provided with a water flow channel 121, on which a fan coil 122, a regulating valve 123 and a water pump 124 are provided; the fan coil 122 is located on the air flow channel 111 of the air circuit system 110, and is used to control the temperature and humidity of the air flow in the air flow channel 111; the temperature and humidity control method is used to control the fan coil 122, the regulating valve 123, the water pump 124, the humidifier 112 and the electric heater 113, so as to control the temperature and humidity of the indoor space 114.

[0164] Specifically, the temperature and humidity control method mainly controls the fan of the fan coil unit 122 on the water path, the regulating valve 123, and the water pump 124 to control the temperature and humidity of the indoor space 114; in a few cases, the temperature and humidity control method requires a small amount of electric heating heat and the humidification amount of the humidifier 112 for compensation, thereby avoiding the problem of easy oscillation caused by multi-target control and achieving the reduction of electric heating and humidifier 112, while avoiding the disorder of the control functions of dehumidification, cooling, heating, and humidification functions.

[0165] In some embodiments, reference Figure 3 The water flow channel 121 includes a first channel 1211, a second channel 1212 and a third channel 1213, wherein one end of the first channel 1211 is a water inlet, and the other end is connected to the water inlet of the fan coil unit 122, one end of the second channel 1212 is connected to the water outlet of the fan coil unit 122, and the other end is a water outlet, and the third channel 1213 is connected between the first channel 1211 and the second channel 1212; wherein the connection position between the first channel 1211 and the third channel 1213 is a first transfer position, and the connection position between the second channel 1212 and the third channel 1213 is a second transfer position, wherein the water pump 124 is arranged in the first channel 1211 and is located between the first transfer position and the fan coil unit 122, and the regulating valve 123 is arranged at the second transfer position.

[0166] Specifically, in the air path system 110, the air flow passes through the fan coil 122, the humidifier 112 and the electric heater 113 in sequence along the air flow channel 111, and then flows to the indoor space 114, thereby replacing the air in the indoor space 114, and then adjusting the temperature and humidity of the indoor space 114. In the water path system 120, in one embodiment, liquid water enters the first channel 1211 from the water inlet, and the liquid water flows to the fan coil 122 after passing through the water pump 124. The liquid water adjusts the temperature of the air flow in the air flow channel 111 when passing through the fan coil 122, thereby adjusting the temperature and humidity of the air flow in the air flow channel 111. Then, the liquid water flows along the second channel 1212 to the regulating valve 123 and is discharged from the water outlet. In other embodiments, the liquid water can also form an internal circulation between the first pipe, the second pipe and the third pipe.

[0167] Instead of the above-mentioned water pump 124 and regulating valve 123, in some embodiments, referring to Figure 4 The water pump 124 is disposed in the third channel 1213, and the regulating valve 123 is disposed in the second channel 1212 and is located between the fan coil unit 122 and the second transfer position. The specific water flow movement process is consistent with the above, and will not be described in detail. Figure 5 The water pump 124 is arranged in the third channel 1213, and the regulating valve 123 is arranged in the second channel 1212 and is located between the second transfer position and the water outlet. The specific water flow movement process is consistent with the above, which is not described in detail. According to actual needs, the water pump 124 and the regulating valve 123 can also be arranged in other positions, which is not described in detail.

[0168] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A temperature and humidity control method, characterized in that: Applied to a constant temperature and humidity air conditioning system, the temperature and humidity control method includes: Acquire a current first actual dry-bulb temperature and a first actual dew-point temperature of the indoor space, and determine a first dry-bulb temperature difference between the first actual dry-bulb temperature and a target dry-bulb temperature and a first dew-point temperature difference between the first actual dew-point temperature and the target dew-point temperature; Based on the positive and negative values ​​of the first actual dry-bulb temperature and the first actual dew-point temperature, preliminarily adjust the temperature and humidity of the constant temperature and humidity air-conditioning system, and obtain the current second actual dry-bulb temperature and second actual dew-point temperature of the indoor space; Determine a second dry-bulb temperature difference between the second actual dry-bulb temperature and the target dry-bulb temperature and a second dew-point temperature difference between the second actual dew-point temperature and the target dew-point temperature, and adjust the temperature and humidity of the constant temperature and humidity air-conditioning system again based on the absolute values ​​of the second dry-bulb temperature difference and the second dew-point temperature difference.

2. The temperature and humidity control method according to claim 1, characterized in that: The preliminarily adjusting the temperature and humidity of the constant temperature and humidity air conditioning system based on the positive and negative values ​​of the first actual dry-bulb temperature and the first actual dew point temperature includes: The first dew point temperature difference and the first dry bulb temperature difference are respectively set as X and Y coordinates as reference coordinate points, and the quadrant of the reference coordinate point in the two-dimensional coordinate system is determined; Based on the quadrant where the reference coordinate point is located, the temperature and humidity of the constant temperature and humidity air-conditioning system are preliminarily adjusted.

3. The temperature and humidity control method according to claim 2, characterized in that: The constant temperature and humidity air conditioning system comprises an air circuit system and a water circuit system, wherein a humidifier and an electric heater are arranged on the air flow channel of the air circuit system; a fan coil unit, a regulating valve and a water pump are arranged on the water flow channel of the water circuit system, and the fan coil unit is located on the air flow channel of the air circuit system; The preliminarily adjusting the temperature and humidity of the constant temperature and humidity air conditioning system based on the quadrant where the reference coordinate point is located includes: If the reference coordinate point is in the first quadrant, the fan of the fan coil unit, the regulating valve and the water pump are controlled to open and adjust, and the humidifier and the electric heater are turned off; If the reference coordinate point is in the second quadrant, the fan of the fan coil unit, the regulating valve, the water pump and the humidifier are controlled to open and adjust, and the electric heater is turned off; If the reference coordinate point is in the third quadrant, the fan of the fan coil unit, the electric heater and the humidifier are controlled to be turned on and adjusted, and the regulating valve and the water pump are turned off; If the reference coordinate point is in the fourth quadrant, the fan of the fan coil unit, the regulating valve, the water pump and the electric heater are controlled to open and adjust, and the humidifier is turned off.

4. The temperature and humidity control method according to claim 3, characterized in that: If the reference coordinate point is in the first quadrant, the temperature and humidity of the constant temperature and humidity air conditioning system are adjusted again based on the absolute values ​​of the second dry-bulb temperature difference and the second dew-point temperature difference and the quadrant where the reference coordinate point is located, including: Determining that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference; Control the fan of the fan coil unit to accelerate, the opening of the regulating valve to increase, and the speed of the water pump to decrease, and keep the electric heater and the humidifier closed; or, Determining that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is less than a preset first set dew-point temperature difference; Control the fan of the fan coil unit to accelerate, the opening of the regulating valve to increase, and the speed of the water pump to increase, and keep the electric heater and the humidifier closed; or, Determining that the absolute value of the second dry-bulb temperature difference is less than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference; The fan of the fan coil unit is controlled to slow down, the opening of the regulating valve is increased, and the speed of the water pump is reduced, and the electric heater and the humidifier are kept closed.

5. The temperature and humidity control method according to claim 3, characterized in that: If the reference coordinate point is in the second quadrant, the temperature and humidity of the constant temperature and humidity air conditioning system are adjusted again based on the absolute value of the second dry-bulb temperature difference and the second dew-point temperature difference and the quadrant where the reference coordinate point is located, including: Determining that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference; Control the fan of the fan coil unit to accelerate, the opening of the regulating valve to increase, the speed of the water pump to increase, and the opening of the humidifier to increase, and keep the electric heater off; or, Determining that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is less than a preset first set dew-point temperature difference; Control the fan of the fan coil unit to accelerate, the opening of the regulating valve to increase, the speed of the water pump to increase, and the opening of the humidifier to decrease, and keep the electric heater off; or, Determining that the absolute value of the second dry-bulb temperature difference is less than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference; The fan of the fan coil unit is controlled to decrease, the opening of the regulating valve is controlled to increase, the speed of the water pump is controlled to decrease, the humidifier is controlled to close, and the electric heater is controlled to close.

6. The temperature and humidity control method according to claim 3, characterized in that: If the reference coordinate point is in the third quadrant, the temperature and humidity of the constant temperature and humidity air conditioning system are adjusted again based on the absolute values ​​of the second dry-bulb temperature difference and the second dew-point temperature difference and the quadrant where the reference coordinate point is located, including: Determining that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference; Control the fan of the fan coil unit to accelerate, the electric heater to increase its opening, and the humidifier to increase its opening, and keep the regulating valve and the water pump closed; or, Determining that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is less than a preset first set dew-point temperature difference; Control the fan of the fan coil unit to accelerate, the electric heater to increase the opening, and the humidifier to decrease the opening, and keep the regulating valve and the water pump closed; or, Determining that the absolute value of the second dry-bulb temperature difference is less than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference; The fan of the fan coil unit is controlled to accelerate, the opening of the electric heater is controlled to decrease, and the opening of the humidifier is controlled to increase, and the regulating valve and the water pump are kept closed.

7. The temperature and humidity control method according to claim 3, characterized in that: If the reference coordinate point is in the fourth quadrant, the temperature and humidity of the constant temperature and humidity air conditioning system are adjusted again based on the absolute value of the second dry-bulb temperature difference and the second dew-point temperature difference and the quadrant where the reference coordinate point is located, including: Determining that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference; Control the fan of the fan coil unit to slow down, the opening of the regulating valve to increase, the speed of the water pump to decrease, and the opening of the electric heater to increase, and keep the humidifier closed; or, Determining that the absolute value of the second dry-bulb temperature difference is greater than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is less than a preset first set dew-point temperature difference; Control the fan of the fan coil unit to accelerate, the opening of the regulating valve to decrease, the speed of the water pump to decrease, and the opening of the electric heater to increase, and keep the humidifier closed; or, Determining that the absolute value of the second dry-bulb temperature difference is less than a preset first set dry-bulb temperature difference, and determining that the absolute value of the second dew-point temperature difference is greater than a preset first set dew-point temperature difference; The fan of the fan coil unit is controlled to slow down, the opening of the regulating valve is increased, the speed of the water pump is reduced, and the opening of the electric heater is reduced, and the humidifier is kept closed.

8. The temperature and humidity control method according to any one of claims 1 to 7, characterized in that: After the temperature and humidity of the constant temperature and humidity air conditioning system are adjusted again based on the absolute values ​​of the second dry-bulb temperature difference and the second dew-point temperature difference and the quadrant where the reference coordinate point is located, the temperature and humidity control method further includes: Acquire a third actual dry-bulb temperature and a third actual dew-point temperature of the indoor space, and determine a third dry-bulb temperature difference between the third actual dry-bulb temperature and the target dry-bulb temperature and a third dew-point temperature difference between the third actual dew-point temperature and the target dew-point temperature; Determining whether the absolute value of the third dry-bulb temperature difference is less than a preset second set dry-bulb temperature difference, and determining whether the absolute value of the third dew-point temperature difference is less than a preset second set dew-point temperature difference; If the absolute value of the third dry-bulb temperature difference is less than the preset second set dry-bulb temperature difference and the absolute value of the third dew-point temperature difference is less than the preset second set dew-point temperature difference, stop adjusting the temperature and humidity of the constant temperature and humidity air-conditioning system; If the absolute value of the third dry-bulb temperature difference is greater than the preset second set dry-bulb temperature difference and / or the absolute value of the third dew-point temperature difference is greater than the preset second set dew-point temperature difference, return to execute the acquisition of the current first actual dry-bulb temperature and the first actual dew-point temperature of the indoor space, and determine the first dry-bulb temperature difference between the first actual dry-bulb temperature and the target dry-bulb temperature and the first dew-point temperature difference between the first actual dew-point temperature and the target dew-point temperature.

9. A constant temperature and humidity air conditioning system, characterized in that: include: The air duct system is provided with an air flow channel, and a humidifier and an electric heater are provided on the air flow channel; A water system, provided with a water flow channel, on which a fan coil unit, a regulating valve and a water pump are provided, wherein the fan coil unit is located on the air flow channel of the air system and is used to control the temperature and humidity of the air flow in the air flow channel; The temperature and humidity control method described in any one of claims 1 to 8 is used to control the fan coil unit, the regulating valve, the water pump, the humidifier and the electric heater to control the temperature and humidity of the indoor space.

10. The constant temperature and humidity air conditioning system according to claim 9, characterized in that: The water flow channel includes a first channel, a second channel and a third channel, one end of the first channel is a water inlet, and the other end is connected to the water inlet of the fan coil unit, one end of the second channel is connected to the water outlet of the fan coil unit, and the other end is a water outlet, and the third channel is connected between the first channel and the second channel; wherein the connection position between the first channel and the third channel is a first transfer position, and the connection position between the second channel and the third channel is a second transfer position; Wherein, the water pump is arranged in the first channel and is located between the first transfer position and the fan coil unit, and the regulating valve is arranged in the second transfer position; or, the water pump is arranged in the third channel, the regulating valve is arranged in the second channel and is located between the fan coil unit and the second transfer position; or, the water pump is arranged in the third channel, the regulating valve is arranged in the second channel and is located between the second transfer position and the water outlet.

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