KR102659473B1 - Thermo-hygrostat control method for energy-saving dehumidification control of a low-load thermo-hygrostat facility and its thermo-hygrostat - Google Patents

Abstract

The present invention relates to a constant temperature and humidity control method including energy-saving dehumidification control of a low load constant temperature and humidity facility, a constant temperature and humidity device, and a constant temperature and humidity device, the purpose of which is to determine the dehumidifying operation conditions of the constant temperature and humidity device so that the indoor humidity measurement value is higher than the set value. A constant temperature humidifier designed with a large sensible heat ratio (SHF), including a control method to operate dehumidification operation by determining whether the two conditions that the indoor temperature measurement value is equal to the set value are satisfied, exceeds the design capacity range and has a sensible heat ratio (SHF). The purpose of the present invention is to provide a constant temperature and humidity control method and a constant temperature and humidity device that can provide a set constant temperature and humidity function even when SHF) is operated at a low level.
The configuration of the present invention is a method of controlling a thermohygrostat, including the steps of turning on the power to the thermostat and inputting the indoor temperature set value (Tr) and the indoor humidity set value (Hr) through the temperature and humidity setting unit (10). (S11) and; The control unit 11 compares whether the indoor humidity measurement value measured by the temperature and humidity sensor 9 is greater than the indoor humidity set value (Hr) (S12); If the indoor humidity measurement value is large, comparing whether the indoor temperature measurement value is greater than the indoor temperature set value (Tr) (S13); If the measured indoor temperature value is not large, comparing whether it is equal to the indoor temperature set value (Tr) (S14); A constant temperature and humidity control method including energy-saving dehumidification control of a low-load constant temperature and humidity facility, including a step (S15) of performing a dehumidifying operation when the indoor temperature measurement value and the indoor temperature set value (Tr) are the same, and the constant temperature and humidity It is a characteristic of the invention.

Description

Thermo-hygrostat control method for energy-saving dehumidification control of a low-load thermo-hygrostat facility and its thermo-hygrostat}

The present invention relates to a constant temperature and humidity control method including energy-saving dehumidification control of a low load constant temperature and humidity facility, and more specifically, to an improved method for controlling temperature and humidity including energy-saving dehumidification control in low-load constant temperature and humidity facilities. It relates to a constant temperature and humidity control method and the constant temperature and humidity device that prevents energy waste, including dehumidification operation, and maintains precise temperature and humidity.

In an environment with four distinct seasons like Korea, constant temperature and humidity operation to maintain constant indoor temperature and humidity is largely divided into cooling operation, heating operation, dehumidification operation, and humidification operation.

In summer, if the indoor temperature is higher than the set temperature, cooling operation is performed, and if the indoor humidity is higher than the set humidity, dehumidification operation is performed.

In winter, if the indoor temperature is lower than the set temperature, heating operation is performed, and if the indoor humidity is lower than the set humidity, humidification operation is performed. Additionally, in spring and fall, cooling and humidification may be combined.

Here, especially in the dehumidifying operation, even if the indoor temperature is lower than or equal to the set temperature, if the indoor humidity is higher than the set humidity, a cooling operation is forcibly performed to remove moisture contained in the indoor air, and simultaneously a heating operation is performed to remove moisture from the indoor air due to the cooling operation. It prevents the temperature from falling below the set temperature, but this type of operation consumes a lot of energy and also makes it difficult to maintain precise indoor temperature and humidity.

Figure 5 is an exemplary diagram showing a flowchart of automatic temperature control of a conventional thermohygrostat, and Figure 6 is an exemplary diagram showing a flowchart of automatic humidity control of a conventional thermohygrostat.

As shown in FIG. 5, when the power is turned on, the conventional thermohygrostat unconditionally performs cooling operation if the indoor temperature measurement value is greater than the temperature set value (Tr), and if it is low, heating is performed. Movement is automatically controlled to perform driving.

In addition, as shown in FIG. 6, when the power is turned on, the conventional thermohygrostat unconditionally performs dehumidifying operation if the indoor humidity measured value is greater than the humidity set value (Hr), and if it is small, it performs dehumidifying operation. The operation is automatically controlled to perform humidification operation.

Below, the relationship between the cooling capacity of a thermohygrostat and the SHF (sensible heat ratio) will be explained.

Cooling capacity is designed and manufactured with maximum capacity by reviewing the indoor cooling load (sensible heat + latent heat) that fluctuates depending on the season. In other words, the cooling capacity of the thermohygrostat is determined based on midsummer when the outside air temperature and outside air humidity are the highest.

In midsummer, when the outside air temperature and outside air humidity are the highest, it operates in cooling operation, but during the rainy season when the outside air temperature is not high but the outside air humidity is the highest, the cooling operation and dehumidification operation operate in a complex manner.

Sensible heat load and latent heat load are generated indoors according to fluctuating outdoor temperature and outdoor humidity. During the dehumidification operation period, the SHF (sensible heat ratio) is calculated according to the fluctuating sensible heat load and latent heat load, and a constant temperature is used to maintain a constant indoor temperature and humidity. The air supply condition of the hygrostat must be reviewed.

The technical definition of SHF (sensible heat ratio) is as follows.

When the indoor sensible heat load decreases and the indoor latent heat load increases, the sensible heat ratio (SHF) decreases. Conversely, when the indoor sensible heat load increases and the indoor latent heat load decreases, the sensible heat ratio (SHF) increases. If there is no indoor latent heat load, the sensible heat ratio (SHF) decreases. It becomes 1.

The dry bulb temperature and absolute humidity of the air supplied from the thermohygrostat to the room rise due to the indoor sensible heat load and indoor latent heat load, and the rising path changes parallel to the sensible heat ratio (SHF) line of the wet-air diagram.

Figure 7 is a humid air diagram showing that air supplied from a thermohygrostat fluctuates according to the sensible heat ratio (SHF). The illustrated example is an example in which air supplied from a thermohygrostat fluctuates depending on the sensible heat ratio (SHF).

When the sensible heat ratio (SHF) = 1, only the dry bulb temperature increases without a change in absolute humidity, resulting in an indoor temperature and humidity of 24℃/50%. However, when the sensible heat ratio (SHF) = 0.8, the absolute humidity and dry bulb temperature increase, resulting in an indoor temperature and humidity of 24℃. You can see that it is /55%.

Figure 8 is a diagram of the operating state and wet air diagram of a dehumidifying constant temperature and humidity device designed with a sensible heat ratio (SHF) = 0.82. As shown, this is an automatic control explanation for maintaining the indoor temperature and humidity constant according to the sensible heat ratio (SHF) when the thermohygrostat is operated in dehumidifying operation.

Here, the design capacity example of a thermohygrostat is designed to operate at a sensible heat ratio (SHF) = 0.82, with the maximum cooling temperature cooling to a temperature difference of 10.5℃, and the maximum heating temperature heating to a temperature difference of 4℃. That is, when the room temperature is 24℃, the thermo-hygrostat can be cooled to 24℃-10.5℃=13.5℃, and when heated again, it can be heated to 13.5℃+4℃=17.5℃.

As shown, the conventional thermo-hygrostat includes: ① → ②: the process of cooling and dehumidifying indoor air in a thermo-humidifier; ②→③: The process of heating (reheating) the cooled and dehumidified air in a thermohygrostat; ③ → ①: The air supplied from the thermohygrostat performs a process of absorbing indoor sensible and latent heat.

In this way, it can be seen that the conventional thermohygrostat maintains the indoor temperature and humidity constant at 24°C/50% while operating continuously.

Figure 9 is a diagram of the operating state and wet air diagram of a dehumidifying constant temperature and humidity device designed with a sensible heat ratio (SHF) = 0.8.

When the sensible heat ratio (SHF) = 0.82 shown in FIG. 8 is changed to SHF = 0.8, the operating state of the thermohygrostat must be operated as shown in FIG. 9 to maintain the indoor temperature and humidity constant at 24°C/50%. .

As shown, the conventional thermo-hygrostat includes: ① → ②: the process of cooling and dehumidifying indoor air in a thermo-humidifier; ②→③: The process of heating (reheating) the cooled and dehumidified air in a thermohygrostat; ③ → ①: The air supplied from the thermohygrostat performs a process of absorbing indoor sensible and latent heat.

In this way, looking at the operating state of the conventional thermohygrostat, the angle of the sensible heat ratio (SHF) line changes, and when the sensible heat ratio (SHF) = 0.82, the indoor supply air temperature was operated at 17.5℃, but when the sensible heat ratio (SHF) = 0.8, the indoor supply air temperature was operated at 17.5℃. It can be seen that the indoor temperature and humidity can be maintained at 24℃/50% only when the operating point is changed to 18.2℃ in the supply air temperature.

In other words, if the sensible heat ratio (SHF) decreases, the heating (reheating) capacity must increase from a temperature difference of 4℃ to a temperature difference of 4.7℃.

Figure 10 is a control method operation state and humid air diagram when a thermohygrostat designed with a conventional sensible heat ratio (SHF) = 0.82 is operated at a sensible heat ratio (SHF) = 0.8.

If a thermohygrostat designed with a sensible heat ratio (SHF) = 0.82 is operated at a sensible heat ratio (SHF) = 0.8 beyond the design capacity range, a problem as shown in FIG. 10 occurs.

As shown, the conventional thermo-hygrostat is designed with a sensible heat ratio (SHF) = 0.82. When the thermo-hygrostat exceeds the design capacity range and operates at a sensible heat ratio (SHF) = 0.8, ① → ②: the indoor air is cooled and dehumidified in the thermo-hygrostat. process; ②→③: The process of heating (reheating) the cooled and dehumidified air in a thermohygrostat; ③ → ④: The process in which the air supplied from the thermohygrostat absorbs indoor sensible and latent heat; ④→⑤: The process of cooling and dehumidifying indoor air in a thermohygrostat; ⑤ → ⑥: Perform the process of heating (reheating) the cooled and dehumidified air in a thermohygrostat.

As such, the conventional thermohygrostat designed with a sensible heat ratio (SHF) = 0.82 cannot heat the air cooled and dehumidified to 13.5℃ to 18.2℃, so the indoor supply air is supplied at 17.5℃, and the indoor temperature and humidity is ultimately the designed 24℃/50%. Instead, it becomes 23.3℃/53%. In other words, the indoor temperature is low and the humidity is high.

As described above, the dehumidifying operation condition of the conventional thermohygrostat is that the dehumidifying operation is performed when the humidity is high even if the indoor temperature is less than the set value. As this process is repeated, the indoor temperature gradually decreases and the humidity cannot be maintained at 50%.

In other words, the humidity control method of the conventional thermohygrostat has the problem of wasting energy and failing to maintain the designed temperature and humidity.

Korean Patent Publication No. 10-2002-0041799 (2002.06.03.) Korean Patent Registration No. 10-1540221 (2015.07.23.) Korean Patent Registration No. 10-1502096 (2015.03.06.) Korean Patent Registration No. 10-1608210 (2016.03.28.)

The purpose of the present invention to solve the above problems is to determine whether the dehumidifying operation conditions of the thermohygrostat are satisfied by two conditions: the indoor humidity measurement value is greater than the set value and the indoor temperature measurement value is equal to the set value. The energy of a low-load constant temperature and humidity facility that can provide the set constant temperature and humidity function even when a constant temperature and humidity system designed with a large sensible heat ratio (SHF), including a control method to enable this operation, is operated with a low sensible heat ratio (SHF) beyond the design capacity range. The object is to provide a constant temperature and humidity control method including saving dehumidification control and a constant temperature and humidity control device.

The present invention, which achieves the above-described object and performs the task of eliminating the drawbacks of the prior art, has a refrigerant compressor, condenser, receiver, expansion valve, and evaporator arranged sequentially, a blower, heater, humidifier, temperature and humidity sensor, and temperature and humidity setting. In the control method of a thermohygrostat including a unit and a control unit,

Turning on the power to the thermostat and inputting the indoor temperature set value (Tr) and the indoor humidity set value (Hr) through the temperature and humidity setting unit (S11);

A step (S12) where the control unit compares whether the indoor humidity measured value measured by the temperature and humidity sensor 9 is greater than the indoor humidity set value (Hr);

If the indoor humidity measurement value is large, comparing whether the indoor temperature measurement value is greater than the indoor temperature set value (Tr) (S13);

If the measured indoor temperature value is not large, comparing whether it is equal to the indoor temperature set value (Tr) (S14);

A constant temperature and humidity control method including energy-saving dehumidification control of a low load constant temperature and humidity facility, comprising a step (S15) of performing a dehumidification operation when the indoor temperature measurement value and the indoor temperature set value (Tr) are the same; and This is achieved by providing a constant temperature and humidity device.

In a preferred embodiment, a step (S17) of performing a cooling operation when the indoor temperature measurement value in step (S13) is greater than the indoor temperature set value (Tr).

In a preferred embodiment, a step (S18) of performing a reheat operation when the indoor temperature measurement value in step (S14) is smaller than the indoor temperature set value (Tr) is not equal to the indoor temperature set value (Tr).

In a preferred embodiment, if the measured indoor humidity value in step (S12) is not greater than the indoor humidity set value (Hr), a step (S19) of comparing whether it is equal to the indoor humidity set value (Hr);

If the indoor humidity measured value is equal to the humidity set value (Hr), comparing whether the indoor temperature measured value is less than the indoor temperature set value (Tr) (S20);

It is characterized in that it includes a step (S21) of performing a heating operation when the indoor temperature measurement value is less than the indoor temperature set value (Tr).

In a preferred embodiment, if the measured indoor temperature value in step (S20) is not less than the set indoor temperature value (Tr), a step (S22) of comparing whether the measured indoor temperature value is greater than the set indoor temperature value (Tr);

If the indoor temperature measurement value is greater than the indoor temperature set value (Tr), step (S17) is performed, and if not, the blowing operation is performed (S23).

In a preferred embodiment, if the indoor humidity measured value in step (S19) is not equal to the indoor humidity set value (Hr), a step (S24) of comparing whether the indoor temperature measured value is less than the indoor temperature set value (Tr);

It is characterized in that it includes a step (S25) of performing a heating and humidifying operation when the indoor temperature measurement value is less than the indoor temperature set value (Tr).

In a preferred embodiment, if the indoor humidity measured value in step (S24) is not less than the indoor humidity set value (Hr), a step (S26) of comparing whether the indoor temperature measured value is greater than the indoor temperature set value (Tr);

It is characterized in that it includes a step (S27) of performing a cooling and humidifying operation when the indoor temperature measurement value is greater than the indoor temperature set value (Tr).

In a preferred embodiment, if the indoor temperature measurement value in step (S26) is not greater than the indoor temperature set value (Tr), a humidifying operation is performed (S28).

In another embodiment, the present invention includes a refrigerant compressor, a condenser, a receiver, an expansion valve, and an evaporator arranged sequentially, and a constant temperature and humidity device including a blower, a heater, a humidifier, a temperature and humidity sensor, a temperature and humidity setting unit, and a control unit,

This is achieved by providing a constant temperature and humidity control device including energy saving dehumidification control of a low load constant temperature and humidity facility, which is characterized in that it performs the energy saving dehumidification control method.

A constant temperature and humidity control method including energy-saving dehumidification control of a low load constant temperature and humidity facility according to the present invention having the above characteristics, and the constant temperature and humidity control method has the dehumidifying operation conditions such that the indoor humidity measurement value is greater than the set value and the indoor temperature is measured. By determining whether the two conditions that the value is equal to the set value are met and controlling it to operate in dehumidifying operation, the thermo-humidifier designed with a large sensible heat ratio (SHF) maintains the constant temperature and humidity function even if the sensible heat ratio (SHF) exceeds the design capacity range and is operated with a small sensible heat ratio (SHF). It has the effect of being able to provide.

In addition, in the present invention, if the indoor humidity measurement value is greater than the set value but the indoor temperature measurement value is less than the set value, the refrigerant compressor is not operated and only the heater is operated, thereby preventing the indoor temperature from falling excessively due to insufficient heater capacity. This has the effect of maintaining precise temperature and humidity when applied to facilities with small indoor cooling loads, such as storage rooms and archives.

In addition, the present invention has the effect of saving energy because there is no unnecessary refrigerant compressor operation when applied to facilities with a small indoor cooling load, such as storage or archives.

In addition, when the present invention is applied to facilities with a small indoor cooling load, such as storage rooms, archives, etc., it has the economic effect of being able to maintain precise temperature and humidity without increasing the heater capacity, allowing the heater capacity to be designed to be small.

The present invention is a useful invention with various effects as described above, and is highly anticipated for industrial use.

1 is a configuration diagram of a thermohygrostat to which dehumidification operation through automatic humidity control is applied according to an embodiment of the present invention;
Figure 2 is a flowchart of automatic humidity control of a thermohygrostat according to an embodiment of the present invention;
Figure 3 is a control method operation state and a change in humidity air when a thermohygrostat designed to automatically control humidity according to an embodiment of the present invention is operated with a small sensible heat ratio (SHF) beyond the design capacity range,
Figure 4 is a flowchart of the automatic control of overall temperature and humidity of the thermohygrostat including dehumidification operation through automatic humidity control according to the present invention;
Figure 5 is an exemplary diagram showing the automatic temperature control flowchart of a conventional thermohygrostat,
Figure 6 is an exemplary diagram showing the automatic humidity control flowchart of a conventional thermohygrostat,
Figure 7 is a wet-air diagram showing that the air supplied from the thermo-hygrostat fluctuates according to the sensible heat ratio (SHF),
Figure 8 shows the operating state and wet air diagram of a dehumidifying constant temperature and humidity device designed with a sensible heat ratio (SHF) = 0.82;
Figure 9 is a diagram of the operating state and wet air diagram of a dehumidifying constant temperature and humidity device designed with a sensible heat ratio (SHF) = 0.8;
Figure 10 is a control method operation state and humid air diagram when a thermohygrostat designed with a conventional sensible heat ratio (SHF) = 0.82 is operated at a sensible heat ratio (SHF) = 0.8.

Hereinafter, the configuration of an embodiment of the present invention and its operation will be described in detail in connection with the attached drawings. Additionally, in describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

Figure 1 is a configuration diagram of a thermohygrostat to which dehumidification operation through automatic humidity control is applied according to an embodiment of the present invention, Figure 2 is a flowchart of automatic humidity control of a thermohygrostat according to an embodiment of the present invention, and Figure 3 is the control method operation state and humidity air temperature gradient when the thermohygrostat designed to automatically control humidity according to an embodiment of the present invention is operated with a small sensible heat ratio (SHF) beyond the SHF design capacity range, Figure 4 is a flowchart of the automatic control of overall temperature and humidity of the thermohygrostat including dehumidification operation through automatic humidity control according to the present invention.

As shown in FIG. 1, the thermohygrostat to which dehumidification operation through automatic humidity control according to the present invention is applied is a refrigerant compressor (1), a condenser (2), a receiver (3), and an expansion valve (4) along the circulation path of the refrigerant. ), evaporators 5 are arranged sequentially, and the inside of the indoor unit 50 in which the evaporator 5 is housed is comprised of a blower 6 that discharges the air heat exchanged in the evaporator into the room to supply air and sucks it in for ventilation.

In addition, the indoor unit 50 is provided with a heater 7 that heats the air supplied into the room through the blower, a humidifier 8 that humidifies the supplied air, and a temperature and humidity sensor 9 that measures the temperature and humidity of the air. do.

In addition, the temperature and humidity setting unit 10 sets the operating temperature and humidity of the thermohygrostat having the above configuration, and controls the operation of each component of the thermohygrostat according to the temperature and humidity set in the temperature and humidity setting unit to maintain the indoor air at a constant temperature. A control unit 11 is provided to ensure constant humidity.

However, since the above configuration is a general configuration of a thermohygrostat that is already widely used, a detailed description of these configurations will be omitted.

The control unit 11 processes control flows to perform reheating operation, cooling operation, blowing operation, heating operation, heating and humidifying operation, cooling and humidifying operation, and humidifying operation including dehumidifying operation through improved automatic humidity control according to the present invention. It consists of a microprocessor that operates on/off the compressor to operate the evaporator that provides cold air to lower the temperature based on the information from the temperature and humidity sensor (9), turns on/off the heater to heat the air temperature, and operates the air temperature. It controls the on/off operation of the humidifier to increase humidity and the on/off operation of the blower for air supply and circulation.

The constant temperature and humidity system configured as above has an improved automatic humidity control method performed by the control unit, so it can be applied to facilities with a small indoor cooling load, such as storage rooms and archives, to prevent energy waste and maintain precise temperature and humidity through improved dehumidification operation. The humidity is automatically controlled to do so.

Hereinafter, the improved automatic humidity control method according to the present invention will be described in detail with reference to FIG. 2, which is a thermohygrostat with a design capacity of sensible heat ratio (SHF) = 0.82.

As shown, there is a step of turning on the power to the thermohygrostat and inputting the indoor temperature set value (Tr) and the indoor humidity set value (Hr) through the temperature and humidity setting unit 10 (S11).

In this stage, when power is applied to the thermohygrostat, the blower 6 operates to continuously supply and ventilate indoor air and circulate it. Therefore, descriptions of the on/off of the blower will be omitted in the subsequent steps.

Afterwards, the control unit 11 has a step of comparing whether the indoor humidity measurement value measured by the temperature and humidity sensor 9 is greater than the indoor humidity set value (Hr) (S12).

Afterwards, if the indoor humidity measurement value is large, the control unit 11 has a step of comparing whether the indoor temperature measurement value measured by the temperature and humidity sensor 9 is greater than the indoor temperature set value (Tr) (S13).

Afterwards, the control unit 11 has a step of comparing whether the measured indoor temperature value is equal to the indoor temperature set value (Tr) if it is not large (S14).

Afterwards, the control unit 11 has a step of performing a dehumidifying operation when the measured indoor temperature value and the indoor temperature set value (Tr) are the same (S15).

When operating in the dehumidifying operation, the control unit 11 controls the operation of the refrigerant compressor 1 and the heater 7 to On and the humidifier 8 to the Off state.

Meanwhile, in step (S13), the control unit 11 performs a cooling operation when the measured indoor temperature value is greater than the indoor temperature set value (Tr). (S17)

When operating in the cooling mode, the control unit 11 controls the operation of the refrigerant compressor 1 in an on state and the heater 7 and humidifier 8 in an off state.

Meanwhile, in the step (S14), the control unit 11 performs a reheat operation when the measured indoor temperature value is smaller than the indoor temperature set value (Tr). (S18)

When operating in the reheat operation, the control unit 11 controls the operation of the refrigerant compressor 1 in an Off state, the heater 7 in an On state, and the humidifier 8 in an Off state.

Meanwhile, in the step (S12), if the indoor humidity measurement value measured by the temperature and humidity sensor 9 is less than the indoor humidity set value (Hr), the control unit 11 performs blowing operation, heating operation, heating humidification operation, cooling humidification operation, It has a step of performing humidification operation.

As in the control flow above, the present invention is controlled to operate in a dehumidifying operation only when two conditions are met: the measured indoor humidity value is greater than the set value and the measured indoor temperature value is equal to the set value.

This automatic dehumidification operation control method is different from the conventional automatic control of constant temperature and humidity, which operates regardless of the indoor temperature when the indoor humidity measurement value is greater than the set value under the dehumidification operation condition.

Therefore, when controlled using a dehumidification control method such as the present invention, if the indoor humidity measured value is greater than the set value but the indoor temperature measured value is lower than the set value, the refrigerant compressor (1) is not operated and only the heater (7) is operated, so the heater (7) is operated. It can prevent the indoor temperature from dropping excessively due to insufficient capacity.

Figure 3 shows the improvement control method operation state and humid air diagram when a thermohygrostat designed with sensible heat ratio (SHF) = 0.82 is operated at sensible heat ratio (SHF) = 0.8.

Hereinafter, with reference to FIG. 3, it will be explained that the thermohygrostat performing the control method of FIG. 2 designed with sensible heat ratio (SHF) = 0.82 can be operated normally even when operated at sensible heat ratio (SHF) = 0.8 beyond the design capacity range. do. As shown, the constant temperature and humidity according to the present invention is

①→②: The process of cooling and dehumidifying indoor air in a thermohygrostat; ②→③: The process of heating (reheating) the cooled and dehumidified air in a thermohygrostat; ③ → ④: The process in which the air supplied from the thermohygrostat absorbs indoor sensible and latent heat; ④→⑤: The indoor air is heated in a thermohygrostat.

In this way, even if the indoor temperature and humidity is 23.3℃/53% instead of the designed 24℃/50%, the improved humidity control method automatically controls the indoor measured humidity to 53%, which is higher than the set humidity of 50%. Since 23.3℃ is lower than the set temperature of 24℃, the thermohygrostat stops the refrigerant compressor and operates heating to quickly raise the indoor temperature to the set value, thereby maintaining precise temperature and humidity.

Figure 4 is a flowchart of the automatic control of overall temperature and humidity of the thermohygrostat including dehumidification operation through automatic humidity control according to the present invention.

FIG. 4 shows that in step (S12), which is not explained in FIG. 2, the control unit 11 performs blowing operation, heating operation, and heating when the indoor humidity measurement value measured by the temperature and humidity sensor 9 is less than the indoor humidity set value (Hr). The steps for performing humidification operation, cooling humidification operation, and humidification operation are explained.

In the flowchart specified in the shown flowchart for automatic control of constant temperature and humidity, humidity is prioritized for comparison, but for ease of explanation, the comparison of temperature and humidity applied to the present invention does not specify priority.

In the steps described below, as described in the step of FIG. 2, the power to the thermohygrostat is turned on, and the indoor temperature and indoor humidity settings to be controlled are input through the temperature and humidity setting unit. The thermohygrostat measures the indoor temperature/humidity through a temperature/humidity sensor while the blower operates to continuously circulate indoor air, and compares it with the set temperature/humidity to perform each operating condition.

In step (S12), the control unit 11 compares whether the indoor humidity measured value measured by the temperature and humidity sensor 9 is equal to the indoor humidity set value (Hr) if it is not greater than the indoor humidity set value (Hr). ( S19)

Afterwards, if the measured indoor humidity value is equal to the humidity set value (Hr), the control unit 11 has a step of comparing whether the indoor temperature measured value measured by the temperature and humidity sensor 9 is less than the indoor temperature set value (Tr). (S20)

Afterwards, the control unit 11 has a step of performing a heating operation when the measured indoor temperature value is less than the indoor temperature set value (Tr) (S21).

When operating in the heating operation, the control unit 11 controls the operation of the refrigerant compressor 1 in an Off state, the heater 7 in an On state, and the humidifier 8 in an Off state.

Meanwhile, in step (S20), the control unit 11 compares whether the measured indoor temperature value is greater than the indoor temperature set value (Tr) if the measured indoor temperature value is not less than the indoor temperature set value (Tr). (S22)

Afterwards, the control unit 11 performs the step (S17) if the measured indoor temperature value is greater than the indoor temperature set value (Tr), and performs a blowing operation if the measured indoor temperature value is not greater than the indoor temperature set value (Tr). (S23)

When operating in the blowing operation, the control unit 11 controls the operation of the refrigerant compressor 1, heater 7, and humidifier 8 in an Off state.

Meanwhile, in step (S19), if the indoor humidity measured value measured by the temperature and humidity sensor 9 is not equal to the indoor humidity set value (Hr), the indoor temperature measured value is less than the indoor temperature set value (Tr). There is a step to compare information. (S24)

Afterwards, the control unit 11 has a step of performing a heating and humidifying operation when the measured indoor temperature value is less than the indoor temperature set value (Tr) (S25).

When operating in the heating and humidifying operation, the control unit 11 controls the operation of the refrigerant compressor 1 to be turned off and the heater 7 and humidifier 8 to be turned on.

Meanwhile, in step (S24), if the indoor humidity measured value measured by the temperature and humidity sensor 9 is not less than the indoor humidity set value (Hr), the measured indoor temperature measured value is set to the indoor temperature set value (Tr). There is a step to compare whether it is greater than or not. (S26)

Afterwards, the control unit 11 has a step of performing a cooling and humidifying operation when the measured indoor temperature value is greater than the indoor temperature set value (Tr) (S27).

When operating in the cooling and humidifying operation, the control unit 11 controls the operation such that the refrigerant compressor 1 is turned on, the heater 7 is turned off, and the humidifier 8 is turned on. .

Meanwhile, in step (S26), the control unit 11 performs a humidifying operation if the measured indoor temperature value is not greater than the indoor temperature set value (Tr). (S28)

When operating in the humidifying operation, the control unit 11 controls the operation of the refrigerant compressor 1 and the heater 7 to be turned off and the humidifier 8 to be turned on.

To summarize the overall operation of the thermohygrostat according to the present invention as described above,

If the indoor humidity measured value is greater than the set value and the indoor temperature measured value is greater than the set value, the thermohygrostat operates in cooling mode.

Additionally, if the indoor humidity measured value is greater than the set value and the indoor temperature measured value is the same as the set value, the thermohygrostat operates in dehumidifying operation.

Additionally, if the indoor humidity measurement value is greater than the set value and the indoor temperature measurement value is less than the set value, the thermohygrostat operates in reheat operation.

Additionally, if the indoor humidity measurement value is equal to the set value and the indoor temperature measurement value is less than the set value, the thermohygrostat operates in heating operation.

Additionally, if the indoor humidity measured value is equal to the set value and the indoor temperature measured value is greater than the set value, the thermohygrostat operates in cooling mode.

Additionally, if the indoor humidity measured value is equal to the set value and the indoor temperature measured value is equal to the set value, the thermohygrostat operates in blowing operation.

Additionally, if the indoor humidity measurement value is less than the set value and the indoor temperature measurement value is less than the set value, the thermohygrostat operates in heating and humidifying operation.

Additionally, if the indoor humidity measured value is less than the set value and the indoor temperature measured value is greater than the set value, the thermohygrostat operates in cooling and humidifying operation.

Additionally, if the indoor humidity measured value is less than the set value and the indoor temperature measured value is the same as the set value, the thermo-hygrostat operates in humidifying operation.

The present invention is not limited to the specific preferred embodiments described above, and various modifications can be made by anyone skilled in the art without departing from the gist of the invention as claimed in the claims. Of course, such changes are within the scope of the claims.

(1): Refrigerant compressor (2): Condenser
(3): Receiving device (4): Expansion stool
(5): Evaporator (6): Blower
(7): Heater (8): Humidifier
(9): Temperature and humidity sensor (10): Temperature and humidity setting unit
(11): Control unit (50): Indoor unit

Claims (9)

The refrigerant compressor (1), condenser (2), receiver (3), expansion valve (4), and evaporator (5) are arranged sequentially, and the blower (6), heater (7), humidifier (8), and temperature and humidity sensor ( 9), in the control method of a constant temperature and humidity device including a temperature and humidity setting unit (10) and a control unit (11),
A step (S11) of turning on the power to the thermohygrostat and inputting the indoor temperature set value (Tr) and the indoor humidity set value (Hr) through the temperature and humidity setting unit (10);
The control unit 11 compares whether the indoor humidity measurement value measured by the temperature and humidity sensor 9 is greater than the indoor humidity set value (Hr) (S12);
If the indoor humidity measurement value is large, comparing whether the indoor temperature measurement value is greater than the indoor temperature set value (Tr) (S13);
If the measured indoor temperature value is not large, comparing whether it is equal to the indoor temperature set value (Tr) (S14);
A thermo-hygrostat control method including energy-saving dehumidification control of a low-load constant temperature and humidity facility, comprising a step (S15) of performing a dehumidifying operation when the measured indoor temperature value and the indoor temperature set value (Tr) are the same.
In claim 1,
In the step (S13), if the indoor temperature measurement value is greater than the indoor temperature set value (Tr), performing a cooling operation (S17); includes an energy-saving dehumidification control of a low-load constant temperature and humidity facility, characterized in that it includes a step (S17) of performing a cooling operation. Constant temperature and humidity control method.
In claim 1,
Energy-saving dehumidification control of a low-load constant temperature and humidity facility comprising a step (S18) of performing a reheat operation if the indoor temperature measurement value in step (S14) is smaller than the indoor temperature set value (Tr). A constant temperature and humidity control method comprising.
In claim 1,
If the measured indoor humidity value in step (S12) is not greater than the indoor humidity set value (Hr), a step (S19) of comparing whether it is equal to the indoor humidity set value (Hr);
If the indoor humidity measured value is equal to the humidity set value (Hr), comparing whether the indoor temperature measured value is less than the indoor temperature set value (Tr) (S20);
A thermo-hygrostat control method including energy-saving dehumidification control of a low-load constant temperature and humidity facility, comprising a step (S21) of performing a heating operation when the measured indoor temperature value is less than the indoor temperature set value (Tr).
In claim 4,
If the measured indoor temperature value in step (S20) is not less than the indoor temperature set value (Tr), a step (S22) of comparing whether the measured indoor temperature value is greater than the indoor temperature set value (Tr);
Energy-saving dehumidification control of a low-load constant temperature and humidity facility comprising a step (S17) of performing a blowing operation if the indoor temperature measurement value is greater than the indoor temperature set value (Tr), and a step (S23) of performing a blowing operation if the indoor temperature measurement value is greater than the indoor temperature set value (Tr). A constant temperature and humidity control method comprising.
In claim 4,
If the indoor humidity measured value in step (S19) is not equal to the indoor humidity set value (Hr), a step (S24) of comparing whether the indoor temperature measured value is less than the indoor temperature set value (Tr);
A constant temperature and humidity control method including energy-saving dehumidification control of a low load constant temperature and humidity facility, comprising a step (S25) of performing a heating and humidification operation when the indoor temperature measurement value is less than the indoor temperature set value (Tr). .
In claim 6,
If the indoor humidity measured value in step (S24) is not less than the indoor humidity set value (Hr), a step (S26) of comparing whether the indoor temperature measured value is greater than the indoor temperature set value (Tr);
A constant temperature and humidity control method including energy saving dehumidification control of a low load constant temperature and humidity facility, comprising: performing a cooling and humidification operation when the indoor temperature measurement value is greater than the indoor temperature set value (Tr) (S27).
In claim 7,
In the step (S26), if the indoor temperature measurement value is not greater than the indoor temperature set value (Tr), performing a humidifying operation (S28); including an energy-saving dehumidification control of a low-load constant temperature and humidity facility, characterized in that it includes. Constant temperature and humidity control method.
The refrigerant compressor (1), condenser (2), receiver (3), expansion valve (4), and evaporator (5) are arranged sequentially, and the blower (6), heater (7), humidifier (8), and temperature and humidity sensor ( 9), in the thermohygrostat including a temperature and humidity setting unit (10) and a control unit (11),
A thermo-hygrostat comprising energy-saving dehumidification control of a low-load constant temperature and humidity facility, characterized in that the energy-saving dehumidification control method according to any one of claims 1 to 8 is performed.