Temperature and humidity separate control air conditioning system and control method thereof

Abstract

The invention discloses a temperature and humidity separate control air conditioning system and a control method, and relates to the technical field of refrigeration. The system comprises fresh air, a refrigerant, a heating medium, a cold and heat source host, a fresh air handling unit and at least one temperature adjusting unit, the cold and heat source host is connected with the fresh air handling unit, the cold and heat source host is further connected with the temperature adjusting unit, the fresh air handling unit is connected with the temperature adjusting unit, the temperature adjusting unit is arranged in a temperature adjusting space, and the fresh air handling unit treats the fresh air through the refrigerant / heating medium. And the temperature adjusting unit treats the intermediate air through a heating medium / refrigerant to obtain supplied air and sends the supplied air into the temperature adjusting spaces, the refrigerant / heating medium treated in the fresh air unit returns to the cold and heat source main machine, and the heating medium / refrigerant subjected to temperature adjusting treatment in the temperature adjusting unit returns to the cold and heat source main machine. Compared with the prior art, independent control over the air supply temperature and humidity of different spaces is achieved, constant air pressure in the spaces is maintained, meanwhile, waste heat of exhaust air is recycled, and energy consumption is reduced.

Description

Technical Field

[0001] The present application belongs to the field of refrigeration technology, and specifically relates to a temperature and humidity separate control air conditioning system and a control method thereof. Background Art

[0002] Laboratories are usually equipped with high-precision equipment and instruments, and have high requirements for indoor air quality and temperature and humidity. In some chemical and biological laboratories, in order to avoid cross contamination, different laboratories and different closed areas in laboratories must be relatively independent in physical space, and must also follow certain pressure gradient requirements to achieve unidirectional airflow.

[0003] The traditional fresh air DC system can reduce the risk of cross-contamination in the laboratory and ensure air quality, but the unit has high energy consumption, occupies a large space, and the temperature and humidity requirements between different areas are not completely consistent. At the same time, the load of each enclosed area changes dynamically. In order to meet the constant indoor temperature and humidity, the air supply parameters should change according to demand. However, the conventional system cannot meet the independent changes of each room. Summary of the invention

[0004] In order to solve at least one of the above-mentioned defects, the present invention application proposes a temperature and humidity separate control air conditioning system and a control method thereof, which overcomes the shortcomings of the prior art.

[0005] On the one hand, an embodiment of the present invention provides a temperature and humidity control air conditioning system, including fresh air, refrigerant, heat medium, cold and hot source host, fresh air unit, and at least one temperature control unit.

[0006] The cold and hot source host is connected to the fresh air unit via a first liquid supply pipe and a first liquid return pipe;

[0007] The cold and hot source host and each of the temperature regulating units are connected via a second liquid supply pipe and a second liquid return pipe respectively;

[0008] The fresh air unit is connected to each temperature regulating unit via different intermediate air ducts;

[0009] The temperature control unit is arranged in the temperature control space, and each temperature control space corresponds to at least one temperature control unit;

[0010] The fresh air unit uses the refrigerant / heat medium to perform heat exchange processing on the fresh air entering the fresh air unit to obtain intermediate air, and the intermediate air is respectively sent to each temperature control unit; the temperature control unit uses the heat medium / refrigerant to perform temperature control processing on the intermediate air to obtain supply air, and the supply air is respectively sent to each corresponding temperature control space;

[0011] The refrigerant / heat medium after heat exchange treatment in the fresh air unit returns to the cold and heat source host through the first liquid return pipe;

[0012] The heat medium / refrigerant after temperature adjustment in the temperature adjustment unit returns to the heat and cold source host through the second liquid return pipe.

[0013] Preferably, it also includes an exhaust fan unit and a heat exchange medium corresponding to the exhaust fan unit, the exhaust fan unit is connected to each temperature adjustment space through an exhaust duct, after the exhaust air of each temperature adjustment space enters the exhaust fan unit, it exchanges heat with the heat exchange medium, and the exhaust air after heat exchange is discharged from the exhaust fan unit;

[0014] The exhaust fan unit is also connected to the fresh air unit through a pretreatment liquid supply pipe and a pretreatment liquid return pipe; before the fresh air unit performs the heat exchange treatment on the fresh air, the heat exchange medium after the heat exchange enters the fresh air unit through the pretreatment liquid supply pipe to pre-treat the fresh air;

[0015] The pretreated heat exchange medium returns to the exhaust fan unit through the pretreatment liquid return pipe.

[0016] Preferably, it also includes a controller, a constant air volume valve, a variable air volume valve and an air pressure sensor.

[0017] The air pressure sensing device is respectively provided in each temperature adjustment space to obtain the air pressure data of each temperature adjustment space;

[0018] A constant air volume valve is arranged on the pipeline between the fresh air unit and the temperature control unit, and the constant air volume valve is electrically connected to the controller; and / or a variable air volume valve is arranged on the pipeline between the exhaust fan unit and each temperature control space, and the variable air volume valve is electrically connected to the controller.

[0019] Preferably, a first temperature and humidity sensing device is provided at the fresh air inlet of the fresh air unit, and the first temperature and humidity sensing device is electrically connected to the controller;

[0020] And / or, a second temperature and humidity sensing device is provided at the intermediate air outlet of the fresh air unit, and the second temperature and humidity sensing device is electrically connected to the controller;

[0021] And / or, a third temperature sensing device is provided at the air supply outlet of the temperature regulating unit, and the third temperature sensing device is electrically connected to the controller;

[0022] And / or, a fourth temperature sensing device is provided at the air inlet of the exhaust fan unit, and the fourth temperature sensing device is electrically connected to the controller;

[0023] And / or, a fifth temperature and humidity sensing device is respectively arranged in each of the temperature adjustment spaces, and the fifth temperature and humidity sensing device is electrically connected to the controller.

[0024] Preferably, a first power unit is provided in the first liquid return pipe.

[0025] and / or, a second power unit is arranged in the second liquid return pipe,

[0026] and / or, a third power unit is arranged in the pretreatment liquid supply pipe,

[0027] and / or, an adjustable multi-way valve is provided between the second liquid supply pipe and the second liquid return pipe,

[0028] The first power unit, the second power unit, the third power unit and the adjustable multi-way valve are electrically connected to the controller respectively.

[0029] On the other hand, the present invention provides a control method for controlling the temperature and humidity separate control air conditioning system, the method comprising:

[0030] The controller obtains the fresh air volume, real-time temperature and humidity data of the fresh air, real-time temperature and humidity data of the intermediate air, real-time temperature data of the supply air, real-time temperature data of the exhaust air, real-time temperature data of the temperature-adjusting space, and preset temperature and humidity parameters of the temperature-adjusting space;

[0031] The controller determines the working mode based on the acquired fresh air volume, fresh air real-time temperature and humidity data, intermediate air real-time temperature and humidity data, supply air real-time temperature data, exhaust air real-time temperature data, the real-time temperature and humidity data of the temperature-adjusting space, and the preset temperature and humidity parameters of the temperature-adjusting space;

[0032] Based on the working mode, the cold and heat source host provides refrigerant to the fresh air unit through the first liquid supply pipe, and provides heat medium to the temperature control unit through the second liquid supply pipe, and / or, based on the working mode, the cold and heat source host provides heat medium to the fresh air unit through the first liquid supply pipe, and provides refrigerant to the temperature control unit through the second liquid supply pipe.

[0033] Preferably, the working mode includes a seasonal operation mode and / or an air supply state;

[0034] The seasonal operation modes are:

[0035] When the difference between the preset temperature and humidity parameters of the temperature-controlled space and the real-time temperature and humidity data of the fresh air meets the preset seasonal threshold, the controller controls the temperature and humidity separate control air-conditioning system to enter the summer operation mode, otherwise it enters the winter operation mode, wherein in the summer operation mode, the cold and heat source host supplies refrigerant to the fresh air unit through the first liquid supply pipe, and supplies heat medium to the temperature-controlled unit through the second liquid supply pipe,

[0036] In the winter operation mode, the cold and heat source host provides heat medium to the fresh air unit through the first liquid supply pipe, and provides refrigerant to the temperature control unit through the second liquid supply pipe;

[0037] The air supply state is:

[0038] The controller calculates the fresh air enthalpy value and the supply air enthalpy value based on the fresh air real-time temperature and humidity data, the intermediate air real-time temperature and humidity data, the supply air real-time temperature and humidity data, and the exhaust air real-time temperature and humidity data;

[0039] The controller calculates the design air enthalpy value based on the preset temperature and humidity parameters;

[0040] The controller calculates the real-time indoor air enthalpy value based on the real-time temperature and humidity data of each temperature adjustment space;

[0041] The controller calculates the temperature and humidity load of the corresponding temperature-adjusting space based on the difference between the real-time indoor air enthalpy value and the designed air enthalpy value;

[0042] The controller calculates the air supply state of each temperature-controlled space based on the fresh air volume and the temperature and humidity load of each temperature-controlled space.

[0043] Preferably, the method further includes an operating mode of the exhaust fan unit, and the operating mode of the exhaust fan unit is:

[0044] The controller calculates the temperature difference between the fresh air and the exhaust air based on the real-time temperature and humidity data of the fresh air and the real-time temperature data of the exhaust air;

[0045] When the temperature difference between the fresh air and the exhaust air is less than a preset threshold, the controller controls the exhaust fan unit to enter the exhaust mode to exhaust the exhaust air in the temperature-adjusting space to the outside;

[0046] When the temperature difference between the fresh air and the exhaust air is greater than a preset threshold, the controller controls the exhaust fan unit to enter a waste heat recovery mode. After the exhaust air from the temperature control space enters the exhaust fan unit, it exchanges heat with the heat exchange medium, and the exhaust air after heat exchange is discharged to the outside. The heat exchange medium after heat exchange enters the fresh air unit through the pretreatment liquid supply pipe, and pretreats the fresh air. The pretreated heat exchange medium returns to the exhaust fan unit through the pretreatment return liquid pipe.

[0047] Preferably, the method further comprises:

[0048] The controller acquires the air pressure data of each temperature control space in real time, adjusts the opening of the variable air volume valve of the corresponding temperature control space based on the air pressure data, and adjusts the exhaust volume of the corresponding temperature control space according to the opening of the variable air volume valve.

[0049] Preferably, the method further comprises:

[0050] The controller adjusts the first power unit based on the air supply state, thereby adjusting the flow of the refrigerant / heat medium between the cold and hot source host and the fresh air unit;

[0051] And / or, the controller adjusts the second power unit based on the air supply state, thereby controlling the flow of the heat medium / refrigerant between the cold and heat source host and the temperature control unit;

[0052] And / or, the controller adjusts the third power unit based on the air supply state, thereby controlling the flow rate of the heat exchange medium between the fresh air unit and the exhaust air unit;

[0053] And / or, the controller adjusts the adjustable multi-way valve based on the air supply state, thereby controlling the flow direction of the heat medium / refrigerant between the cold and heat source host and the temperature adjustment space.

[0054] Compared with the prior art, the beneficial effects of the present invention include at least: by setting up a cold and hot source host, during cooling and dehumidification, it can provide refrigerant for the fresh air unit to cool and dehumidify the fresh air, and at the same time provide heat medium for different temperature control units set in different temperature control spaces, adjust the fresh air after cooling and dehumidification, and ensure that the final supply air temperature and humidity can meet the requirements of the different spaces; by setting an adjustable variable air volume valve, combined with real-time monitoring of the air pressure in the temperature control space, the exhaust rate is adjusted in real time to maintain the air pressure in the temperature control space constant, and at the same time, the exhaust unit is used to recover the waste heat of the exhaust air to reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0056] Figure 1 The architecture of the temperature and humidity control air conditioning system provided by the present invention Figure 1 .

[0057] Figure 2 The architecture of the temperature and humidity control air conditioning system provided by the present invention Figure 2 .

[0058] Figure 3 The architecture of the temperature and humidity control air conditioning system provided by the present invention Figure 3 .

[0059] Figure 4 The architecture of the temperature and humidity control air conditioning system provided by the present invention Figure 4 .

[0060] Figure 5 A flow chart of a control method for a temperature and humidity separate control air conditioning system provided in the present invention.

[0061] Attached figures are marked: 1. Cold and heat source main unit; 2. Fresh air unit; 3. Temperature control unit; 4. Exhaust fan unit; 5. Constant air volume valve; 6. Variable air volume valve; 7. Fifth temperature and humidity sensing device; 8. Air pressure sensing device; 9-1. Second liquid supply pipe; 9-2. Second liquid return pipe; 9-3. Second power unit; 9-4. Adjustable multi-way valve; 10-1. First liquid supply pipe; 10-2. First liquid return pipe; 10-3. First power unit; 11-1. Pretreatment liquid supply pipe; 11-2. Pretreatment liquid return pipe; 11-3. Third power unit; 12. Intermediate air duct; 13. Exhaust duct; 14. Exhaust port; 15. First temperature and humidity sensing device; 16. Second temperature and humidity sensing device; 17. Third temperature and humidity sensing device; 18. Fourth temperature and humidity sensing device. DETAILED DESCRIPTION

[0062] The present invention provides a temperature and humidity control air conditioning system and control method. In order to make the purpose, technical solution and effect of the present invention more clear and explicit, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0063] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0064] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with those in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0065] The application content is further explained below through the description of embodiments in conjunction with the accompanying drawings.

[0066] The drawings of the present invention are only for illustrative purposes and should not be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted.

[0067] First, as Figures 1 to 4 As shown, an implementation scheme of a temperature and humidity control air conditioning system proposed in the present invention includes: fresh air, refrigerant, heat medium, cold and heat source host 1, fresh air unit 2, at least one temperature control unit 3,

[0068] The cold and hot source host 1 is connected to the fresh air unit 2 via a first liquid supply pipe 10-1 and a first liquid return pipe 10-2;

[0069] The cold and hot source host 1 is connected to each of the temperature regulating units 3 via a second liquid supply pipe 9-1 and a second liquid return pipe 9-2 respectively;

[0070] The fresh air unit 2 is connected to each temperature control unit 3 via different intermediate air ducts 12;

[0071] The temperature control unit 3 is arranged in the temperature control space, and each temperature control space corresponds to at least one temperature control unit 3;

[0072] In specific implementation, a four-pipe air-cooled water-cooled unit can be used as the cold and heat source host 1. The cold energy generated in the cold and heat source host 1 is based on the refrigerant and is provided to the fresh air unit 2 through the first liquid supply pipe 10-1, and / or provided to the temperature control unit 3 through the second liquid supply pipe 9-1;

[0073] The heat generated by the cold and heat source host 1 is based on the heat medium and is provided to the temperature control unit 3 through the second liquid supply pipe 9-1, and / or is provided to the fresh air unit 2 through the first liquid supply pipe 10-1.

[0074] Optionally, one or more temperature control units 3 are provided in each temperature control space according to the actual size of the temperature control space and the air supply demand.

[0075] The fresh air unit 2 uses the refrigerant / heat medium to perform heat exchange processing on the fresh air entering the fresh air unit 2 to obtain intermediate air, and the intermediate air is respectively sent to each temperature control unit 3. The temperature control unit 3 uses the heat medium / refrigerant to perform temperature control processing on the intermediate air to obtain supply air, and the supply air is respectively sent to each corresponding temperature control space;

[0076] The refrigerant / heat medium after heat exchange treatment in the fresh air unit 2 returns to the cold and heat source host 1 through the first liquid return pipe 10-2;

[0077] The heat medium / refrigerant after temperature adjustment in the temperature adjustment unit 3 returns to the heat and cold source host 1 through the second liquid return pipe 9 - 2 .

[0078] Optionally, the cooling medium / heating medium may be a liquid refrigerant or a gaseous refrigerant;

[0079] In a preferred embodiment, the system selects a corresponding working mode according to actual needs and temperature conditions.

[0080] If the fresh air needs to be cooled and dehumidified, the system selects the summer operation mode. In the summer operation mode, the cold and heat source host 1 provides refrigerant to the fresh air unit 2 through the first liquid supply pipe 10-1. The fresh air unit 2 uses the refrigerant to cool and dehumidify the fresh air entering the fresh air unit 2 to obtain intermediate air. The cooled and dehumidified refrigerant returns to the cold and heat source host 1 through the first liquid return pipe 10-2, and the intermediate air enters different temperature control units 3 through different intermediate air ducts 12 respectively.

[0081] At the same time, the cold and hot source host 1 provides heat medium to the temperature control units 3 of the different temperature control spaces through the second liquid supply pipe 9-1. The temperature control units 3 of the different temperature control spaces use the heat medium to heat the intermediate air to meet the temperature requirements of the corresponding temperature control space, obtain the supply air and send it into the corresponding temperature control space.

[0082] If the fresh air needs to be heated, the system selects the winter operation mode. In the winter operation mode, the cold and heat source host 1 provides heat medium to the fresh air unit 2 through the first liquid supply pipe 10-1. The fresh air unit 2 uses the heat medium to heat the fresh air entering the fresh air unit 2 to obtain intermediate air. The heated heat medium returns to the cold and heat source host 1 through the first liquid return pipe 10-2, and the intermediate air enters different temperature control units 3 through different intermediate air ducts 12 respectively.

[0083] At the same time, the cold and hot source host 1 provides refrigerant to the temperature control units 3 of the different temperature control spaces through the second liquid supply pipe 9-2. The temperature control units 3 of the different temperature control spaces use the refrigerant to cool the intermediate air to a temperature that meets the temperature requirements of the corresponding temperature control space, obtains supply air, and delivers it to the corresponding temperature control space.

[0084] In a preferred embodiment, it also includes an exhaust fan unit 4 and a heat exchange medium corresponding to the exhaust fan unit. The exhaust fan unit is connected to each temperature adjustment space through an exhaust duct 13. After the exhaust air of each temperature adjustment space 3 enters the exhaust fan unit 4, it exchanges heat with the heat exchange medium. After the heat exchange, the exhaust air is discharged from the exhaust fan unit 4.

[0085] Optionally, the heat exchange medium may be the same refrigerant as that of the cold and heat source host 1, so as to recover waste heat in the exhaust air and reduce the energy consumption of the system.

[0086] In an optional implementation scheme, a variable frequency fan may be provided in the exhaust fan unit 4 to adjust the exhaust air flow rate according to the real-time exhaust air temperature, so as to avoid untimely heat exchange and heat loss.

[0087] The exhaust fan unit 4 is also connected to the fresh air unit 2 through the pretreatment liquid supply pipe 11-1 and the pretreatment liquid return pipe 11-2; before the fresh air unit 2 performs the heat exchange treatment on the fresh air, the heat exchange medium after the heat exchange enters the fresh air unit 2 through the pretreatment liquid supply pipe 11-1 to pre-treat the fresh air;

[0088] The pretreated heat exchange medium returns to the exhaust fan unit 4 through the pretreatment liquid return pipe 11 - 2 .

[0089] In specific implementation, when the system is in summer operation mode, the exhaust air temperature is usually lower than the fresh air. At this time, after the exhaust air of each temperature-adjusting space enters the exhaust fan unit 4, it exchanges heat with the heat exchange medium, and the heat exchange medium is cooled down. The exhaust air after the heat exchange is discharged to the outside, and the cooled heat exchange medium enters the fresh air unit 2 through the pretreatment liquid supply pipe 11-1. The fresh air entering the fresh air unit 2 is pretreated in the fresh air unit 2 to preliminarily cool the fresh air. The pretreated heat exchange medium returns to the exhaust fan unit 4 through the pretreatment liquid return pipe 11-2 to be cooled down again.

[0090] And / or, when the system is in winter operation mode, the exhaust air temperature is higher than the fresh air. At this time, after the exhaust air from each temperature-controlled space enters the exhaust fan unit 4, it exchanges heat with the heat exchange medium, and the heat exchange medium is heated and heated. The exhaust air after heat exchange is discharged to the outside, and the heated heat exchange medium enters the fresh air unit 2 through the pretreatment liquid supply pipe 11-1, and the fresh air entering the fresh air unit 2 is pretreated in the fresh air unit 2, and the fresh air is preliminarily heated. The pretreated heat exchange medium returns to the exhaust fan unit through the pretreatment liquid return pipe 11-2 and is heated again.

[0091] In a preferred embodiment, the air pressure sensing device 8 is respectively arranged in each temperature-adjusting space, and is used to obtain the air pressure data of each temperature-adjusting space. The air pressure sensing device 8 adopts an electronic sensing device with a communication function, and is used to connect with the controller, and send the obtained air pressure data of each temperature-adjusting space to the controller;

[0092] In this embodiment, a constant air volume valve 5 electrically connected to the controller is provided on the intermediate air duct 12. Exemplarily, in this embodiment, the constant air volume valve 5 is provided in the duct before the intermediate air inlet of the temperature control unit 3. In specific implementation, the controller determines the required air supply volume of each temperature control space according to the air supply state of each space, and the controller adjusts the opening of the constant air volume valve 5 of the corresponding temperature control space according to the required air supply volume.

[0093] And / or, a variable air volume valve 6 electrically connected to the controller is provided on the exhaust duct 13. Exemplarily, the variable air volume valve is provided in the exhaust duct at the exhaust port, one end of which is connected to the exhaust port of the temperature control space, and the other end is connected to the exhaust air inlet of the exhaust fan unit 4. During specific implementation, the controller obtains the air pressure data of each temperature control space in real time, adjusts the opening of the variable air volume valve 6 of the corresponding temperature control space based on the air pressure data, and adjusts the exhaust volume of the corresponding temperature control space according to the opening of the variable air volume valve 6.

[0094] In a preferred embodiment, a first temperature and humidity sensing device 15 is arranged at the fresh air inlet of the fresh air unit 2, and the first temperature and humidity sensing device 15 is electrically connected to the controller, and / or a second temperature and humidity sensing device 16 is arranged at the intermediate air outlet of the fresh air unit 2, and the second temperature and humidity sensing device 16 is electrically connected to the controller, and / or a third temperature sensing device 17 is arranged at the air supply outlet of the temperature control unit 3, and the third temperature sensing device 17 is electrically connected to the controller, and / or a fourth temperature sensing device 18 is arranged at the air inlet of the exhaust fan unit 4, and the fourth temperature sensing device 18 is electrically connected to the controller, and / or a fifth temperature and humidity sensing device 7 is respectively arranged in each of the temperature control spaces, and the fifth temperature and humidity device 7 is electrically connected to the controller.

[0095] In a preferred optional implementation, a first power unit 10-3 is provided in the first liquid return pipe 10-2. In a specific implementation, the flow of the refrigerant / heat medium between the cold and hot source host 1 and the fresh air unit 2 is adjusted by adjusting the first power unit 10-3;

[0096] And / or, a second power unit 9-3 is provided in the second liquid return pipe 9-2. In specific implementation, the flow of the heat medium / refrigerant between the cold and heat source host 1 and the temperature regulating unit 4 is adjusted by adjusting the second power unit 9-3;

[0097] And / or, a third power unit 11 - 3 is provided in the pretreatment liquid supply pipe 11 - 1. In specific implementation, the flow rate of the heat exchange medium between the fresh air unit 2 and the exhaust air unit 4 is adjusted by adjusting the third power unit 11 - 3.

[0098] The first power unit, the second power unit and the third power unit may all adopt an adjustable power structure, such as a water pump.

[0099] In another optional embodiment, an adjustable multi-way valve 9-4 is provided between the second liquid supply pipe 9-1 and the second liquid return pipe 9-2. In specific implementation, the state of the adjustable multi-way valve 9-4 is adjusted to control the flow direction of the heat medium / refrigerant between the cold and hot source host 1 and the temperature control unit 3. Exemplarily, this embodiment adopts an adjustable three-way valve, the first interface of which is connected to the second liquid supply pipe 9-1, the second interface is connected to the temperature control unit 3, and the third interface is connected to the cold and hot source host 1.

[0100] In this embodiment, a cold and hot source host is set up. According to different working modes, the cold and hot source host can provide refrigerant or heat medium for the fresh air unit to cool, dehumidify or heat the fresh air. At the same time, it also provides heat medium or refrigerant for different temperature control units set up in different temperature control spaces, so as to adjust the fresh air processed by the fresh air unit to ensure that the final supply air temperature and humidity can meet the requirements of the different spaces; further, by setting an adjustable variable air volume valve and a variable frequency fan in the exhaust fan unit, combined with real-time monitoring of the temperature control air pressure, the exhaust air rate is adjusted in real time to maintain the air pressure in the temperature control space constant, and the exhaust fan unit is used to recover the waste heat of the exhaust air to reduce energy consumption.

[0101] Second, as Figure 5 As shown, an implementation scheme of a control method for a temperature and humidity separate control air conditioning system proposed in the present application, wherein the temperature and humidity separate control air conditioning system adopts the system described in the first aspect of the embodiment, and the method comprises:

[0102] S1, the controller obtains the fresh air volume, real-time temperature and humidity data of the fresh air, real-time temperature and humidity data of the intermediate air, real-time temperature data of the supply air, real-time temperature data of the exhaust air, real-time temperature data of the temperature-adjusting space, and preset temperature and humidity parameters of the temperature-adjusting space;

[0103] S2, the controller determines the working mode based on the fresh air volume, the real-time temperature and humidity data of the fresh air, the real-time temperature and humidity data of the intermediate air, the real-time temperature data of the supply air, the real-time temperature data of the exhaust air, the real-time temperature and humidity data of the temperature-adjusting space, and the preset temperature and humidity parameters of the temperature-adjusting space;

[0104] S3, based on the working mode, the cold and hot source host 1 provides refrigerant to the fresh air unit 2 through the first liquid supply pipe 10-1, and provides heat medium to the temperature control unit 3 through the second liquid supply pipe 9-1,

[0105] And / or, based on the working mode, the cold and hot source host 1 provides heat medium to the fresh air unit 2 through the first liquid supply pipe 10-1, and provides refrigerant to the temperature control unit 3 through the second liquid supply pipe 9-1.

[0106] In specific implementation, the preset temperature and humidity parameters can be preset according to the requirements in the temperature control space, for example, the requirements of biological and chemical laboratories for indoor temperature and humidity, air circulation requirements, or the requirements of precision instruments for temperature, humidity and air pressure.

[0107] The real-time temperature and humidity data of the fresh air is obtained through the first temperature and humidity sensing device 15, the real-time temperature and humidity of the intermediate air is obtained through the second temperature and humidity sensing device 16, the real-time temperature data of the supply air is obtained through the third temperature sensing device 17, the real-time temperature and humidity data of the exhaust air is obtained through the fourth temperature sensing device 18, and the real-time temperature and humidity data of each temperature control space is obtained through the fifth temperature and humidity sensing device 7.

[0108] The working mode in step S2 includes a seasonal operation mode and / or a ventilation state mode.

[0109] Determining the seasonal operation mode specifically includes:

[0110] If the difference between the preset temperature and humidity parameters of the temperature-controlled space and the real-time temperature and humidity data of the fresh air meets the preset seasonal threshold, the controller controls the temperature and humidity separate control air-conditioning system to enter the summer operation mode; if not, it enters the winter operation mode.

[0111] Determining the air supply state specifically includes:

[0112] The controller calculates the fresh air enthalpy value and the supply air enthalpy value based on the fresh air real-time temperature and humidity data, the intermediate air real-time temperature and humidity data, the supply air real-time temperature and humidity data, and the exhaust air real-time temperature and humidity data;

[0113] The controller calculates the design air enthalpy value based on the preset temperature and humidity parameters;

[0114] The controller calculates the real-time indoor air enthalpy value based on the real-time temperature and humidity data of each temperature adjustment space;

[0115] The controller calculates the temperature and humidity load of the corresponding temperature-adjusting space based on the difference between the real-time indoor air enthalpy value and the designed air enthalpy value;

[0116] The controller calculates the air supply state of each temperature-controlled space based on the fresh air volume and the temperature and humidity load of each temperature-controlled space.

[0117] In step S3, the controller controls the system according to different working modes. In specific implementation, if the working mode is the summer operation mode, the controller controls the cold and hot source host 1 to provide refrigerant to the fresh air unit 2. The fresh air unit 2 uses the refrigerant to cool and dehumidify the fresh air entering the fresh air unit 2 to obtain intermediate air. The intermediate air enters the temperature control unit 3 corresponding to different temperature control spaces through the intermediate air duct 12. The temperature control unit 3 heats the intermediate air according to the temperature requirement of the corresponding temperature control space to generate supply air and send it to the corresponding temperature control space.

[0118] If the working mode is the winter operation mode, the controller controls the cold and heat source host 1 to provide heat medium to the fresh air unit 2. The fresh air unit 2 uses the heat medium to heat the fresh air entering the fresh air unit 2 to obtain intermediate air. The intermediate air enters the temperature control unit 3 corresponding to different temperature control spaces through the intermediate air duct 12. The temperature control unit 3 cools down the intermediate air according to the temperature requirement of the corresponding temperature control space to generate supply air and send it to the corresponding temperature control space.

[0119] The controller is based on monitoring the real-time temperature and humidity of different temperature-adjusting spaces and the real-time temperature and humidity of fresh air, processes the fresh air, and performs secondary temperature adjustment according to the temperature requirements of different temperature-adjusting spaces to meet the air supply requirements of different temperature-adjusting spaces.

[0120] In a preferred optional implementation, the method further includes an operation mode of the exhaust fan unit 4. During specific implementation, a temperature difference threshold between the fresh air and the exhaust air is preset.

[0121] When the temperature difference between the fresh air and the exhaust air is less than a preset threshold, the controller controls the exhaust fan unit 4 to enter the exhaust mode, at which time the heat exchange medium does not exchange heat with the exhaust air, and the exhaust fan unit directly discharges the exhaust air to the outside;

[0122] When the temperature difference between the fresh air and the exhaust air is greater than a preset threshold, the controller controls the exhaust fan unit 4 to enter a waste heat recovery mode. At this time, after the exhaust air enters the exhaust fan unit 4, it exchanges heat with the heat exchange medium. The exhaust fan unit 4 discharges the exhaust air after heat exchange to the outside, and provides the heat exchange medium after heat exchange to the fresh air unit 2 through the pretreatment liquid supply pipe 11-1. The heat exchange medium after heat exchange pretreats the fresh air, and the pretreated heat exchange medium returns to the exhaust fan unit through the pretreatment return liquid pipe 11-2.

[0123] Based on the temperature monitoring of the fresh air and the exhaust air, the controller controls the operation mode of the exhaust fan unit 4 to achieve heat recovery of the exhaust air, reduce the workload of the fresh air unit, and reduce the energy consumption of the system.

[0124] In an optional real-time solution, the method further includes:

[0125] The controller determines the required air supply volume of each temperature-adjusting space according to the air supply state of each temperature-adjusting space, and adjusts the opening of the constant air volume valve 5 of the corresponding temperature-adjusting space according to the required air supply volume, and adjusts the flow rate of the intermediate air entering the corresponding temperature-adjusting space according to the opening of the constant air volume valve 5;

[0126] The controller obtains the air pressure data of each temperature-controlled space in real time, adjusts the opening of the variable air volume valve 6 of the corresponding temperature-controlled space based on the air pressure data, and adjusts the exhaust volume of the corresponding temperature-controlled space according to the opening of the variable air volume valve 6.

[0127] In another optional implementation, the controller can also control the variable frequency fan in the exhaust fan unit to adjust the opening of the variable air volume valve 6 to achieve flexible control of the exhaust air flow.

[0128] In an optional embodiment, a first power unit 10-3 is provided in the first liquid return pipe 10-2. In a specific implementation, the controller adjusts the first power unit 10-3 based on the air supply state, thereby adjusting the flow of the refrigerant / heat medium between the cold and hot source host 1 and the fresh air unit 2;

[0129] In another optional embodiment, a second power unit 9-3 is provided in the second liquid return pipe 9-2. In specific implementation, the controller adjusts the second power unit 9-3 based on the air supply state, thereby adjusting the flow of the heat medium / refrigerant between the cold and heat source host 1 and the temperature control unit 3;

[0130] In another optional embodiment, a third power unit 11-3 is provided in the pretreatment liquid supply pipe 11-1. During specific implementation, the controller adjusts the third power unit 11-3 based on the air supply state, thereby adjusting the flow rate of the heat exchange medium between the fresh air unit 2 and the exhaust air unit 4.

[0131] Optionally, an adjustable multi-way valve 9-4 is provided between the second liquid supply pipe 9-1 and the second liquid return pipe 9-2. In specific implementation, the controller adjusts the state of the adjustable multi-way valve 9-4 based on the air supply state, thereby controlling the flow direction of the heat medium / refrigerant between the cold and heat source host 1 and the temperature control unit 3.

[0132] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the technical solutions of the present application, and are not limitations on the specific implementation methods of the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the present application should be included in the protection of the claims of the present application.

Claims

1. A temperature and humidity control air conditioning system, characterized in that: It includes fresh air, refrigerant, hot medium, cold and hot source host, fresh air unit, and at least one temperature control unit. The cold and hot source host is connected to the fresh air unit via a first liquid supply pipe and a first liquid return pipe; The cold and hot source host and each of the temperature regulating units are connected via a second liquid supply pipe and a second liquid return pipe respectively; The fresh air unit is connected to each temperature regulating unit via different intermediate air ducts; The temperature control unit is arranged in the temperature control space, and each temperature control space corresponds to at least one temperature control unit; The fresh air unit uses the refrigerant / heat medium to perform heat exchange processing on the fresh air entering the fresh air unit to obtain intermediate air, and the intermediate air is respectively sent to each temperature control unit; the temperature control unit uses the heat medium / refrigerant to perform temperature control processing on the intermediate air to obtain supply air, and the supply air is respectively sent to each corresponding temperature control space; The refrigerant / heat medium after heat exchange treatment in the fresh air unit returns to the cold and heat source host through the first liquid return pipe; The heat medium / refrigerant after temperature adjustment in the temperature adjustment unit returns to the heat and cold source host through the second liquid return pipe.

2. A temperature and humidity separate control air conditioning system according to claim 1, characterized in that: It also includes an exhaust fan unit and a heat exchange medium corresponding to the exhaust fan unit, wherein the exhaust fan unit is connected to each temperature adjustment space through an exhaust duct, and after the exhaust air of each temperature adjustment space enters the exhaust fan unit, it exchanges heat with the heat exchange medium, and the exhaust air after heat exchange is discharged from the exhaust fan unit; The exhaust fan unit is also connected to the fresh air unit through a pretreatment liquid supply pipe and a pretreatment liquid return pipe; before the fresh air unit performs the heat exchange treatment on the fresh air, the heat exchange medium after the heat exchange enters the fresh air unit through the pretreatment liquid supply pipe to pre-treat the fresh air; The pretreated heat exchange medium returns to the exhaust fan unit through the pretreatment liquid return pipe.

3. A temperature and humidity separate control air conditioning system according to claim 2, characterized in that: It also includes controllers, constant air volume valves, variable air volume valves and air pressure sensing equipment. The air pressure sensing device is respectively provided in each temperature adjustment space to obtain the air pressure data of each temperature adjustment space; A constant air volume valve is arranged on the pipeline between the fresh air unit and the temperature control unit, and the constant air volume valve is electrically connected to the controller; and / or a variable air volume valve is arranged on the pipeline between the exhaust fan unit and each temperature control space, and the variable air volume valve is electrically connected to the controller.

4. A temperature and humidity separate control air conditioning system according to claim 3, characterized in that: A first temperature and humidity sensing device is provided at the fresh air inlet of the fresh air unit, and the first temperature and humidity sensing device is electrically connected to the controller; And / or, a second temperature and humidity sensing device is provided at the intermediate air outlet of the fresh air unit, and the second temperature and humidity sensing device is electrically connected to the controller; And / or, a third temperature sensing device is provided at the air supply outlet of the temperature regulating unit, and the third temperature sensing device is electrically connected to the controller; And / or, a fourth temperature sensing device is provided at the air inlet of the exhaust fan unit, and the fourth temperature sensing device is electrically connected to the controller; And / or, a fifth temperature and humidity sensing device is respectively arranged in each of the temperature adjustment spaces, and the fifth temperature and humidity sensing device is electrically connected to the controller.

5. A temperature and humidity separate control air conditioning system according to claim 4, characterized in that: A first power unit is arranged in the first liquid return pipe, and / or, a second power unit is arranged in the second liquid return pipe, and / or, a third power unit is arranged in the pretreatment liquid supply pipe, and / or, an adjustable multi-way valve is provided between the second liquid supply pipe and the second liquid return pipe, The first power unit, the second power unit, the third power unit and the adjustable multi-way valve are electrically connected to the controller respectively.

6. A control method for a temperature and humidity controlled air conditioning system, characterized in that: Applied to the temperature and humidity separate control air conditioning system according to claim 5, the method comprises: The controller obtains the fresh air volume, the real-time temperature and humidity data of the fresh air, the real-time temperature and humidity data of the intermediate air, the real-time temperature data of the supply air, the real-time temperature data of the exhaust air, the real-time temperature and humidity data of the temperature-adjusting space, and the preset temperature and humidity parameters of the temperature-adjusting space; The controller determines the working mode based on the acquired fresh air volume, fresh air real-time temperature and humidity data, intermediate air real-time temperature and humidity data, supply air real-time temperature data, exhaust air real-time temperature data, the real-time temperature and humidity data of the temperature-adjusting space, and the preset temperature and humidity parameters of the temperature-adjusting space; Based on the working mode, the cold and heat source host provides refrigerant to the fresh air unit through the first liquid supply pipe, and provides heat medium to the temperature control unit through the second liquid supply pipe, and / or, based on the working mode, the cold and heat source host provides heat medium to the fresh air unit through the first liquid supply pipe, and provides refrigerant to the temperature control unit through the second liquid supply pipe.

7. A control method for a temperature and humidity separate control air conditioning system according to claim 6, characterized in that: The working mode includes a seasonal operation mode and / or an air supply state mode; The seasonal operation modes are: When the difference between the preset temperature and humidity parameters of the temperature-controlled space and the real-time temperature and humidity data of the fresh air meets the preset seasonal threshold, the controller controls the temperature and humidity separate control air-conditioning system to enter the summer operation mode, otherwise it enters the winter operation mode, wherein in the summer operation mode, the cold and heat source host supplies refrigerant to the fresh air unit through the first liquid supply pipe, and supplies heat medium to the temperature-controlled unit through the second liquid supply pipe, In the winter operation mode, the cold and heat source host provides heat medium to the fresh air unit through the first liquid supply pipe, and provides refrigerant to the temperature control unit through the second liquid supply pipe; The air supply state mode is: The controller calculates the fresh air enthalpy value and the supply air enthalpy value based on the fresh air real-time temperature and humidity data, the intermediate air real-time temperature and humidity data, the supply air real-time temperature and humidity data, and the exhaust air real-time temperature and humidity data; The controller calculates the design air enthalpy value based on the preset temperature and humidity parameters; The controller calculates the real-time indoor air enthalpy value based on the real-time temperature and humidity data of each temperature adjustment space; The controller calculates the temperature and humidity load of the corresponding temperature-adjusting space based on the difference between the real-time indoor air enthalpy value and the designed air enthalpy value; The controller calculates the air supply state of each temperature-controlled space based on the fresh air volume and the temperature and humidity load of each temperature-controlled space.

8. The control method of a temperature and humidity separate control air conditioning system according to claim 7, characterized in that: The method further includes an operating mode of the exhaust fan unit, wherein the operating mode of the exhaust fan unit is: The controller calculates the temperature difference between the fresh air and the exhaust air based on the real-time temperature and humidity data of the fresh air and the real-time temperature data of the exhaust air; When the temperature difference between the fresh air and the exhaust air is less than a preset threshold, the controller controls the exhaust fan unit to enter the exhaust mode to exhaust the exhaust air in the temperature-adjusting space to the outside; When the temperature difference between the fresh air and the exhaust air is greater than a preset threshold, the controller controls the exhaust fan unit to enter a waste heat recovery mode. After the exhaust air from the temperature control space enters the exhaust fan unit, it exchanges heat with the heat exchange medium, and the exhaust air after heat exchange is discharged to the outside. The heat exchange medium after heat exchange enters the fresh air unit through the pretreatment liquid supply pipe, and pretreats the fresh air. The pretreated heat exchange medium returns to the exhaust fan unit through the pretreatment return liquid pipe.

9. A control method for a temperature and humidity separate control air conditioning system according to claim 8, characterized in that: The method further comprises: The controller acquires the air pressure data of each temperature control space in real time, adjusts the opening of the variable air volume valve of the corresponding temperature control space based on the air pressure data, and adjusts the exhaust volume of the corresponding temperature control space according to the opening of the variable air volume valve.

10. A control method for a temperature and humidity separate control air conditioning system according to claim 9, characterized in that: The method further comprises: The controller adjusts the first power unit based on the air supply state, thereby adjusting the flow of the refrigerant / heat medium between the cold and hot source host and the fresh air unit; And / or, the controller adjusts the second power unit based on the air supply state, thereby controlling the flow of the heat medium / refrigerant between the cold and heat source host and the temperature regulating unit; And / or, the controller adjusts the third power unit based on the air supply state, thereby controlling the flow rate of the heat exchange medium between the fresh air unit and the exhaust air unit; And / or, the controller adjusts the adjustable multi-way valve based on the air supply state, thereby controlling the flow direction of the heat medium / refrigerant between the cold and heat source host and the temperature adjustment space.

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