JP7127784B2 - Temperature load reduction device, temperature load reduction method, and computer program - Google Patents

Description

The present disclosure relates to a temperature load reduction device, a temperature load reduction method, and a computer program.

When people are exposed to extreme temperature environments such as hot and cold environments for long periods of time, they experience discomfort and irritation due to the heat and cold, as well as excessive sweating, shivering, and an increase (or decrease) in body temperature. Physical burdens such as damage to the visceral system and physiological burden on the autonomic nervous system occur.

For example, even if one enters a room temperature environment immediately after being exposed to a hot environment, the effects of the heat will not go away, making it difficult to concentrate on work immediately. Specifically, dehydration due to continuous sweating, wearing of a sweat-soaked shirt in the air conditioner, and continued feeling of discomfort or coldness in the air-conditioning cause work efficiency to decrease. In addition, accumulation of heat stress in a person's body for a long period of time results in mental and physical stress as described above, and this stress may cause other mental and physical stress.

Therefore, in conventional air conditioners, in consideration of comfort, temperature control has been performed such that the target set temperature is lowered when the outside air temperature is high, and the target set temperature is raised when the outside air temperature is low. However, with this temperature control, when you go out of an air-conditioned room, when you enter an air-conditioned room from outside, or when you move from an air-conditioned room to a non-air-conditioned room, the environment changes. There was a concern that the change in temperature would become large and people would feel a so-called heat shock. In addition, there was also a concern that the overly cold weather would cause the patient to become unwell, resulting in so-called air-conditioning disease.

Japanese Patent Laid-Open No. 2002-200000 proposes to perform cooling operation so as to keep the temperature difference between the outside air temperature and the room temperature at 5 to 7° C. in order to mitigate heat shock and prevent overcooling.

JP-A-10-61994

However, in the air conditioner of Patent Document 1, control is performed to reduce the temperature difference in order to prevent overcooling in a hot outdoor environment. It takes For this reason, until the person's mind and body return to a steady state, the burden on the mind and body due to the hot environment continues.

An object of the present disclosure is to quickly reduce the effects of temperature load when exposing a person to an environment that reduces the temperature load accumulated on the person, such as a hot environment or a cold environment.

A first aspect of the present disclosure is a temperature load reduction device (20) used when exposing the user to a second environment for reducing the temperature load accumulated on the user in the first environment. be. The temperature load reduction device (20) is configured to reduce the temperature of the outer shell of the user, the load temperature that is the temperature of the first environment, the reduced temperature that is the temperature of the second environment, and the temperature of the second environment. The outer shell temperature is set to a target value based on the correlation with the reduction time that is the time to expose the user, and the load temperature and one of the reduction temperature and the reduction time are input, A control section (10) for outputting the other of the reduction temperature and the reduction time is provided.

In the first mode, the reduction temperature or the reduction time of the second environment for reducing the temperature load is obtained based on the load temperature of the first environment so that the outer shell temperature of the user reaches the target value. Therefore, by air-conditioning the second environment based on this reduction temperature or reduction time, it is possible to promote heat exchange between the skin temperature and the core body temperature, thereby quickly reducing the effects of the temperature load on the mind and body. .

A second aspect of the present disclosure is the first aspect, wherein the outer shell temperature is BTs, the load temperature is TL, the relief temperature is TR, and the relief time is t, and the correlation is:
BTs(t)=β1×ln(t)+β2
β1=A1×TR+B1×TL-C1
β2=A2×TR+B2×TL-C2
(where ln is natural logarithm, A1, A2, B1, B2, C1, C2 are model parameters)
is represented by

In the second aspect, by experimentally calculating the model parameters in advance, it is possible to obtain the correlation among the user's outer shell temperature, the load temperature, the reduction temperature, and the reduction time.

A third aspect of the present disclosure is the second aspect, wherein the first environment is a hot environment or a cold environment, and the model parameters A1, A2, B1, B2, C1, and C2 are It is set in consideration of the clothes you wear.

In the third aspect, it is possible to obtain more accurately the reduced temperature or the reduced time for reducing the influence of the temperature load caused by the hot environment or the cold environment.

A fourth aspect of the present disclosure is the second or third aspect, wherein the model parameters A1, A2, B1, B2, C1, and C2 are adjusted according to the attributes of the user.

In the fourth aspect, it is possible to obtain the appropriate reduction temperature or reduction time for reducing the influence of the temperature load according to the attribute of the user.

A fifth aspect of the present disclosure is any one of the first to fourth aspects, wherein the load temperature is corrected in consideration of at least one of humidity, wind speed, and radiation temperature in the first environment. be done.

In the fifth aspect, by correctly evaluating the load temperature, the mitigation temperature or mitigation time for mitigating the influence of the temperature load can be obtained more accurately.

A sixth aspect of the present disclosure is the temperature load reducing device (20) according to any one of the first to fifth aspects, and based on the reduced temperature or the reduced time output from the control unit (10), and an air conditioner (30) for air conditioning a second environment.

In the sixth aspect, the air conditioner (30) air-conditions the second environment based on the reduction temperature or reduction time output from the control unit (10), thereby promoting heat exchange between skin temperature and core body temperature. As a result, the influence of the temperature load on the mind and body can be quickly reduced.

A seventh aspect of the present disclosure, in the sixth aspect, further includes an adjustment section (40) configured such that the user can change the reduction temperature or the reduction time output from the control section (10). Prepare.

In the seventh aspect, air conditioning in the second environment that reduces the temperature load can be performed according to the user's desire.

According to an eighth aspect of the present disclosure, in the sixth or seventh aspect, a detector (50) that detects the outer shell temperature is further provided, and the air conditioner (30) is detected by the detector (50). if the difference between the outer shell temperature and the target value exceeds a first predetermined value, change the reduction temperature so that the difference between the reduction temperature and normal temperature is equal to or less than a second predetermined value? or alert the user to cease exposure to the second environment.

In the eighth aspect, it is possible to alleviate heat shock and prevent overcooling.

A ninth aspect of the present disclosure, in any one of the sixth to eighth aspects, further comprises a sensing unit (60) that senses that the user has entered the second environment, and the air conditioner ( 30) terminates air conditioning at the reduced temperature when the reduced time has elapsed after the sensing unit (60) senses that the user has entered the second environment.

In the ninth aspect, it is possible to reduce the cost required for air conditioning using the reduced temperature.

A tenth aspect of the present disclosure is a temperature load reduction method used when exposing the user to a second environment for reducing the temperature load accumulated on the user in the first environment, comprising: The outer shell temperature of the user, the load temperature that is the temperature of the first environment, the reduced temperature that is the temperature of the second environment, and the time for exposing the user to the second environment The outer shell temperature is set to a target value based on a correlation with a certain reduction time, and the other of the reduction temperature and the reduction time is set using the load temperature and one of the reduction temperature and the reduction time as inputs. to output

In the tenth aspect, the reduction temperature or the reduction time of the second environment for reducing the temperature load is determined based on the load temperature of the first environment so that the outer shell temperature of the user reaches the target value. Therefore, by air-conditioning the second environment based on this reduction temperature or reduction time, it is possible to promote heat exchange between the skin temperature and the core body temperature, thereby quickly reducing the effects of the temperature load on the mind and body. .

An eleventh aspect of the present disclosure is a computer program for causing a computer to execute the temperature load reduction method of the tenth aspect.

In the eleventh aspect, the same effect as in the tenth aspect can be obtained.

FIG. 1 is a diagram for explaining a temperature load reduction model. FIG. 2 is a diagram for explaining the temperature load reduction model. FIG. 3 is a diagram for explaining the temperature load reduction model. FIG. 4 is a block configuration diagram of an air conditioning system that includes the temperature load reducing device according to the embodiment. FIG. 5 is a diagram illustrating the relationship between the reduced temperature obtained by the temperature load reduction model and the load temperature. FIG. 6 is a diagram showing how the reduced temperature shown in FIG. 5 is changed. FIG. 7 is a diagram illustrating wind directions in an environment that reduces the temperature load.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. The following embodiments are essentially preferable illustrations, and are not intended to limit the scope of the present invention, its applications, or its uses.

<Temperature load reduction model>
It is known that if a person who has been exposed to a hot environment takes a heat load in a low temperature environment, even for a short period of time, the adverse effects on the mind and body will disappear and the concentration will be restored. In other words, by quickly alleviating the heat stress in the body, mental and physical stress becomes less likely to persist, making it easier to refresh.

Therefore, while being exposed to an extreme temperature environment, or when moving indoors, the temperature environment that puts a strain on the mind and body is the temperature environment opposite to the normal temperature environment, specifically, The influence of the temperature load can be reduced by air-conditioning control that temporarily provides an environment at a temperature below room temperature if the load is due to a hot environment, and temporarily provides an environment at a temperature above room temperature if the load is due to a cold environment.

Generally, it has been thought that giving a large temperature difference is bad for the human body. However, the inventors of the present application found that when entering a cold environment (eg, 21 ° C) after acclimating to a hot environment (eg, 36 ° C), the skin rapidly Through experiments, we clarified that the heat load (decreased parasympathetic nerve function, increased heart rate, increased sweating, etc.) can be reduced as the temperature (outer shell temperature) decreases. did. In addition, the inventors of the present application quickly adjust the temperature of the outer shell such as the surface of the skin to a temperature lower (in the case of a hot environment) or higher (in the case of a cold environment) than the equilibrium state under the normal temperature environment, and the skin temperature Focusing on the fact that the effect of temperature load on the entire body caused by hot and cold environments can be reduced by promoting heat exchange between the body and the core body temperature, a temperature load reduction model was realized. Based on this temperature load reduction model, it is possible to calculate an appropriate environmental temperature (reduction temperature) and stay time (reduction time) to reduce the influence of the temperature load.

BTc is the core body temperature as a representative value for evaluating the body temperature load (heat stress), BTs is the outer shell temperature (temperature of the skin surface), and α × ΔBT is the amount of heat stress (Δ is the temperature based on normal temperature ), the temperature load HS(t) (t is the time) can be described as follows.

Normal temperature environment: HS(t)=0
Hot environment: HS(t)=αc×ΔBTc(t)+αs×ΔBTs(t)
Here, ΔBTs and ΔBTc are the amounts of deviation of the outer shell temperature and core body temperature based on the equilibrium state at room temperature, respectively, and αs and αc are thermal stress coefficients based on the volumes of the outer shell and core, respectively. Note that the heat stress is assumed to be 0 because ΔBT=0 in a room temperature environment.

The deep part is indirectly affected by the outside temperature by exchanging heat with the outer shell. The body temperature BT at time t can be described as follows using the heat exchange amounts HE between the outside air, the outer shell, and the deep part.

BTs(t)=BTs(t−1)−HEsc(t−1)/αs+HEes(t−1)/αs
BTc(t)=BTc(t−1)+HEsc(t−1)/αc
Here, HEes is the amount of heat exchanged between the outside air and the outer shell, and HEsc is the amount of heat exchanged between the outer shell and the deep part.

Also, HEsc can be expressed as HEsc=PL+PC. PL is a regulatory element that depends on dynamic thermoregulatory functions under physiological control through blood flow (including perspiration) and muscle heat dissipation/heat production mechanisms. PC is a regulatory element that does not rely on the thermoregulatory function of physical heat transfer through static substances such as muscles in the proximal region of the deep-outer shell.

It should be noted that the blood flow temperature associated with the PL is directly affected by the outer shell temperature due to its physiological structure. Therefore, the shell temperature affects both PL and PC.

From the above, when the thermoregulatory function is degraded due to long-term exposure to a hot environment, by quickly lowering the outer shell temperature below the physical equilibrium state, it corresponds to deep heat stress through PC and PL. It is possible to promote early reduction of αc×ΔBTc.

FIG. 1 shows changes in the outer shell temperature over time when a person repeatedly enters a room temperature environment (26° C.) and a low temperature environment (21° C.) after adapting to a hot environment (36° C.). .

As shown in Figure 1, when a person enters a room temperature environment (26°C) after adapting to a hot environment (36°C), the outer shell temperature does not drop to the standard value in the equilibrium state in about 20 minutes, so heat Stress lasts for a long time. In particular, since the deep temperature indirectly fluctuates through the heat exchange process between the deep and the outer shell, it is expected to be subjected to deep thermal stress over a longer period of time. On the other hand, when a person enters a low-temperature environment (21°C) that is below room temperature after acclimating to a hot environment (36°C), the outer shell temperature quickly drops below the reference value for equilibrium at room temperature. In other words, early reduction of deep heat stress can be expected through the heat exchange process between the outer shell and the deep part caused by the external air conditioning operation.

As a result of intensive research, the inventors of the present application have determined that the temperature of the environment in which the temperature load is applied (hereinafter referred to as Using TL (also referred to as load temperature) and the temperature of the reduced environment (hereinafter referred to as reduced temperature) TR, the outer shell temperature BTs (t) can be described by the following temperature load reduction model. Found it.

BTs(t)=β1×ln(t)+β2 Equation (1)
β1=A1×TR+B1×TL-C1 Formula (2)
β2=A2×TR+B2×TL-C2 Expression (3)
where ln is the natural logarithm, and A1, B1, C1, A2, B2, and C2 are model parameters.

Fig. 2 shows the outer shell temperature when 30 healthy adult men and women, after acclimating to the hot environment (36°C), entered the normal temperature environment (26°C) and the low temperature environment (21°C) three times each. Using the average value (dashed line) of the results of actual measurement of changes over time, and the model parameters A1, A2, B1, B2, C1, and C2 using these actual measurement results, formulas (1) to (3) are used to calculate A predicted value (solid line) of the shell temperature BTs(t) is shown. The values of model parameters A1, B1, C1, A2, B2, and C2 calculated from the actual measurement results shown in FIG. 2 are 0.05, -0.03, 0.60, 0.08, and 0.17 , −26.3.

In the temperature load reduction model shown in formulas (1) to (3), the target value of the outer shell temperature BTs, which is the reduction standard for deep heat stress, is set to 33°C, which is lower than the average equilibrium state, to reduce the temperature load. Assuming that the time t for exposing a person to the environment (hereinafter also referred to as mitigation time) is 10 minutes, the relationship between the load temperature TL and the mitigation temperature TR can be simply described as follows.

TR=39.5−0.47×TL Expression (4)
According to the formula (4), by setting the target value of the outer shell temperature BTs to be equal to or less than the reference value in the equilibrium state, the ideal reduction temperature TR can be calculated from the load temperature (outside air temperature) TL.

As described above, in the temperature load reduction model that describes the correlation among the outer shell temperature BTs, the load temperature TL, the reduction temperature TR, and the reduction time t, by setting the model parameters according to the assumed situation, the heat It is possible to realize air conditioning control for early reduction of heat stress accumulated in people in the environment. Specifically, in the temperature load reduction model, if the outer shell temperature BTs is set as a target value and one of the load temperature TL and the reduction temperature TR and the reduction time t is input, the other of the reduction temperature TR and the reduction time t can be output.

In the temperature load reduction model shown in formulas (1) to (3), measured values of load temperature TL, reduction temperature TR, reduction time (time to use the environment to reduce the temperature load) t, and outer shell temperature BTs change over time. Model parameters A1, B1, C1, A2, B2, and C2 for estimating the optimum mitigation temperature TR and mitigation time t are calculated based on the parameters β1 and β2 obtained by logarithmically approximating .

Regarding air conditioning control for a reduced environment that reduces the temperature load, by making some of the four parameters (TL, TR, t, BTs) constant, the outer shell temperature BTs can be changed from the load temperature TL to a constant value ( For example, it is possible to calculate the mitigation temperature TR and the mitigation time t required to lower the temperature by 0.5 to 1.5°C.

In addition, the temperature load reduction model shown in formulas (1) to (3) is mainly applied to normal temperature (summer: 25 to 28°C, Winter: 18-22°C) is subjected to a severe temperature load of 5°C or more. In other words, since the thermoregulatory function works normally in an environment close to room temperature, heat stress is less likely to accumulate inside the body. come. In an environment close to room temperature, it is not necessary to reduce the temperature load itself, so air conditioning control for the reduced environment based on the temperature load reduction model need not be performed.

In addition, the temperature load reduction model shown in equations (1) to (3) is designed based on the heat stress in a hot summer environment. , C1, A2, B2, and C2, it is possible to similarly calculate the reduction temperature TR and the reduction time t for negative heat stress in a cold environment in winter. The winter season model parameter estimation may be performed based on the average temperature from December to February, for example, and the load temperature subject to the cold load to which the temperature load reduction model is applied may be, for example, 10° C. or less.

Figure 3 shows the average of the results of actual measurement of changes in outer shell temperature over time when 30 healthy adult males and females performed the action of entering a high temperature environment (36°C) after acclimating to a low temperature environment (21°C) three times each. value. Logarithmic approximation of β1 and β2 in formula ( ¹ ) using the actual measurement results shown in FIG. That is, β1 becomes a negative value when subjected to a heat load, whereas β1 becomes a positive value when subjected to a cold load.

<Configuration of temperature load reduction device>
FIG. 4 is a block configuration diagram of an air conditioning system (100) including a temperature load reducing device (20) according to the embodiment. The temperature load reduction device (20) of the present embodiment transfers the temperature load accumulated on the user in the first environment (hot environment or cold environment) to the second environment (reduction environment) to reduce the user's temperature load. used when exposed to

As shown in FIG. 4, the temperature load reducing device (20) mainly includes a control section (10). A control unit (10) controls a user's shell temperature BTs, a load temperature TL that is the temperature of the first environment, a reduced temperature TR that is the temperature of the second environment, and places the user in the second environment. Based on the correlation with the reduction time t, which is the exposure time (that is, the temperature load reduction model), the outer shell temperature BTs is set to the target value, and the load temperature TL, one of the reduction temperature TR and the reduction time t is input, and the other of the mitigation temperature TR and the mitigation time t is output.

The temperature load reduction device (20) stores the model represented by the above-described formulas (1) to (3) and the model parameters (A1, A2, B1, B2, C1, C2) calculated in advance from actual measurements. A part may be further provided. The temperature load reduction device (20) sets the outer shell temperature BTs to a target value, inputs one of the load temperature TL, the reduction temperature TR and the reduction time t, and outputs the other of the reduction temperature TR and the reduction time t. An input unit and a display unit may be further provided. The temperature load reducing device (20) may further include a measuring section that measures the outside air temperature that becomes the load temperature TL. The temperature load reduction device (20) may use outside air temperature information obtained from the Internet such as AMeDAS as the outside air temperature that becomes the load temperature TL.

The temperature load reduction device (20) includes a computer such as a microcomputer, and by executing a program by the computer, each function of the control unit (10), etc., that is, the temperature load reduction method of the present embodiment is performed. be implemented. A computer has a processor that operates according to a program as a main hardware configuration. The processor may be of any type as long as it can implement functions by executing a program, and is composed of one or more electronic circuits including, for example, a semiconductor integrated circuit (IC) or LSI (large scale integration). may be A plurality of electronic circuits may be integrated on one chip or may be provided on a plurality of chips. A plurality of chips may be integrated into one device, or may be provided in a plurality of devices. The program is recorded in a non-temporary recording medium such as a computer-readable ROM, optical disk, hard disk drive, or the like. The program may be pre-stored in a recording medium, or may be supplied to the recording medium via a wide area network including the Internet.

When the temperature load reducing device (20) is provided with a storage unit, the storage unit may be a computer-readable and writable recording medium, such as a RAM. When the thermal load reducing device (20) is provided with an input section, a keyboard, mouse, touch pad, or the like may be used as the input section. When the thermal load reducing device (20) has a display, the display may be a monitor capable of displaying images, such as a CRT or a liquid crystal display. When the temperature load reducing device (20) includes a measuring unit, the measuring unit may be a temperature sensor carried by the user, or may be a temperature sensor installed in multiple places (room, public institution, outdoors, etc.). It may be a temperature sensor. In the latter case, the ambient temperature of the user is calculated based on temperature history data measured by temperature sensors installed at multiple locations and movement history data of the user. The movement history data of the user may be stored in advance, or may be set and input by the user as appropriate or based on the schedule of the day.

The mounting form of the temperature load reduction device (20) is not particularly limited, but it may be mounted, for example, in a remote controller of an air conditioner (air conditioner) (30), which will be described later. In this case, the temperature load reduction device (20) may be configured using a microcomputer, memory, touch panel, etc. mounted on the remote controller.

In the temperature load reduction device (20), the temperature load reduction model representing the correlation among the outer shell temperature BTs, the load temperature TL, the reduction temperature TR, and the reduction time t is, for example, the above equations (1) to (3). The model shown may be used. The temperature load reduction model used in the temperature load reduction device (20) is not particularly limited as long as it is a model that describes the correlation among the outer shell temperature BTs, the load temperature TL, the reduction temperature TR, and the reduction time t. do not have.

In the temperature load reducing device (20), when the first environment is a hot environment or a cold environment, the model parameters A1, A2, B1, B2, C1, and C2 are set in consideration of clothes worn by the user. may For example, when calculating parameters, different model parameters may be set depending on the season, using data obtained by wearing short sleeves in summer and long sleeves in winter.

By the way, the temperature load reduction model assumes physical heat transfer to the core body temperature through the outer shell temperature BTs. In summer, the outer shell temperature BTs is likely to be directly affected by the outside air temperature (load temperature TL) due to light clothing. On the other hand, since the heat retention capacity of clothes cannot be ignored in winter, the outer shell temperature BTs estimated from the outside air temperature rises, and the effect that people receive from the reduced temperature TR also changes compared to the temperature load reduction model for hot environments. Therefore, in the temperature load reduction model for cold environments, it is necessary to correct the model parameters according to the wearing and removing of clothes.

Specifically, if the environment to reduce the temperature load is an indoor environment, when exposed to the temperature load in a cold environment, for example, the skin temperature when wearing a overcoat is measured as the outer shell temperature BTs, and in the reduced environment, the overcoat is measured. The skin temperature in the undressed state is measured as the outer shell temperature BTs, and the model parameters of the temperature load reduction model for the cold environment are calculated based on the variation data of the measured outer shell temperature BTs. On the other hand, when an environment that reduces the temperature load is set up outdoors, the skin temperature with the overcoat on is measured as the outer shell temperature BTs both during temperature load exposure in the cold environment and under the reduced environment. Then, the model parameters may be calculated based on the measured fluctuation data of the outer shell temperature BTs.

In the thermal load reducing device (20), the model parameters A1, A2, B1, B2, C1, C2 may be adjusted according to the attributes of the user. For example, by obtaining back data based on the temperature load reduction model, model parameters according to the attributes of the user group such as age, gender, physique (weight, BMI, etc.), normal temperature, medical history, etc. may be calculated and set. . As a result, air conditioning control based on the temperature load reduction model can be performed in accordance with the characteristics of users, such as elementary schools and facilities for the elderly.

In the thermal load reducing device (20), the load temperature TL may be corrected taking into account at least one of humidity, wind speed and radiation temperature in the first environment. The temperature load that people feel fluctuates depending on humidity, wind speed, radiation temperature, and the like. For example, if the temperature environment that receives the heat load is 30° C. or higher, and the humidity changes from 50% to 70%, the sensible temperature will be about 1 to 2° C. higher than the actual temperature. Therefore, when subjected to a heat load in a high humidity environment, the outside air temperature (load temperature) TL is corrected to TLh with humidity added according to TLh = TL + γ (γ is the correction value for the outside temperature (approximately 1 to 2°C)). The reduced temperature TR or the reduced time t may be calculated by inputting to the temperature load reduction model.

<Configuration of air conditioning system>
As shown in FIG. 4, the air conditioning system (100) may be composed of the temperature load reducing device (20) and the air conditioner (30). The air conditioner (30) air-conditions a second environment (reduced environment) to reduce the temperature load based on the reduced temperature TR or the reduced time t output from the control unit (10) of the temperature load reduction device (20). conduct.

In the air-conditioning system (100), air-conditioning control based on the temperature load reduction model is performed mainly when the temperature (load temperature TL) receives a strong temperature load from a hot environment or a cold environment (first environment). Air conditioning control based on a temperature load reduction model may be performed when the outside air temperature is, for example, 31° C. or higher in summer, and when the outside air temperature is, for example, 10° C. or lower in winter. On the other hand, when the outside air temperature is in the range of about 20° C. to 30° C., air conditioning control may be performed with a gentle temperature gradient centering on normal temperature (summer: 25° C. to 28° C.). Further, when the outside air temperature is in the range of about 10° C. to 20° C., air conditioning control may be performed with a gentle temperature gradient centering on normal temperature (winter: 18° C. to 22° C.).

The air conditioning system (100) may further include an adjustment section (40) configured to allow the user to change the reduction temperature TR or the reduction time t output from the control section (10). In other words, the user may be able to manually change the reduced temperature TR or the reduced time t to a specific value using the remote controller of the air conditioner (30) or the like. FIG. 5 is a diagram illustrating the relationship between the reduced temperature TR (set temperature for load reduction) and the load temperature TL (environmental temperature under load) obtained by the temperature load reduction model, and FIG. FIG. 10 is a diagram schematically showing how the indicated reduced temperature or its gradient is changed to a specific value or gradient by a user;

The air conditioning system (100) may further include a detector (50) such as a thermography that detects the outer shell temperature BTs of the user. In this case, when the difference between the outer shell temperature BTs detected by the detector (50) and its target value exceeds a first predetermined value (for example, 2°C), the air conditioner (30) sets the reduced temperature TR as Change the mitigation temperature TR so that the difference from normal temperature is a second predetermined value (for example, 5°C) or less, or alert the user to stop exposure to the second environment (reduction environment) may be issued. As a result, excessive expansion of body temperature fluctuations of the user is suppressed. The alert information may be transmitted, for example, to a pre-registered network-enabled personal mobile terminal of the user.

The air-conditioning system (100) may further include devices (sensors) for measuring extreme environmental temperatures (outside air temperature), etc., which cause user loads. For example, the outside air temperature and room temperature (user ambient temperature) are measured by a sensor, and the control unit (10) uses the measured information to output the reduced temperature TR or the reduced time t based on the temperature load reduction model, and the output value The air conditioner (30) may provide cool or warm air to the abatement environment based on the conditions.

The air conditioning system (100) may be configured as a closed room air conditioning system, such as a rest room, that controls the temperature of the entire room to the reduced temperature TR. With such a rest room (rest room), it is possible to reduce the temperature load before a person who has come from the outdoors on a very hot day (very cold day) starts working indoors.

The air-conditioning system (100) may be configured as an open-type air-conditioning system that controls the temperature of a local indoor space to a reduced temperature TR, for example, by locally providing cool or warm air from the wall of the entrance. good.

The air conditioning system (100) may be configured so that it can be used outdoors and can be moved or temporarily installed. In this case, the air conditioning system (100) may be configured as a closed air-conditioned room, for example a temporary rest room, or locally cooled or heated, such as a temporary cooler or warmer. may be configured as an open-type air conditioning system capable of

When the air-conditioning system (100) is configured as an indoor-outdoor open-type air-conditioning system, as shown in FIG. 7, the user (250) is provided with air that is significantly different from the air condition of the place of use (200). is required. In this case, only the surrounding environment of the user (250) should be controlled as the reduced environment. Therefore, in order to improve the local air-conditioning effect, air is blown vertically downward from the air outlet (201) provided above the place of use (200) toward the head of the user (250). Air may be blown horizontally toward the front of the user (250) from the air outlet (202) provided on the side of the place (200).

The parameters of the temperature load reduction model used in the temperature load reduction device (20) are calculated on the premise of a closed space such as a room with a constant temperature. Cool air, warm air, etc. are provided directly from the air conditioner (30). In this case, the reduced temperature TR set by the temperature load reduction model may be the temperature at a position, for example, 1 m away from the air outlet of the air conditioner (30) toward the user. In addition, the target value of the outer shell temperature BTs, which is the criterion for reducing the load, is set lower, for example, by 0.5°C in the case of a hot load compared to the case where a closed space such as a room is assumed. For example, the temperature may be set higher by 0.5°C.

Also, in the open air conditioning system (100), it is necessary to provide air at a temperature that is significantly different from the outside air temperature (load temperature TL). Therefore, if the open type air conditioning system (100) is operated all the time, the cost will increase. may run automatically. In this case, when the air conditioning system (100) is not in operation, a certain amount of cool air or warm air is circulated in the air conditioner (30), thereby reducing the cost of temperature control, while at the same time providing cold air immediately when the air conditioning system (100) is in operation. and warm air may be provided.

The reduced temperature TR set as the target temperature for air conditioning control by the air conditioning system (100) has a large temperature difference from the load temperature TL (for example, the outside air temperature). For example, it is limited to about 5 minutes to 15 minutes. For this reason, it is effective to adjust the temperature in the shortest necessary time for cost reduction. In order to realize this, for example, a function of remotely controlling the air conditioning system (100) through a network may be provided. Specifically, the reduced environment such as the room may be rapidly adjusted to the reduced temperature TR in a short period of time in accordance with the scheduled entry time set by remote control.

Also, the air conditioning system (100) may further include a sensor (60) such as an object sensor that senses that the user has entered a reduced environment such as a room. In this case, the air conditioning system (100) may perform air conditioning control based on the temperature load reduction model only when the sensing unit (60) senses that the user has entered the reduced environment. Further, the air conditioner (30) may end air conditioning at the reduced temperature TR when the reduced time t has elapsed after the sensing unit (60) sensed that the user entered the reduced environment. . For example, after detecting a person entering the room near the scheduled entry time set by remote control with the objective sensor, etc., the reduction time t (for example, 10 to 15 minutes) set by the temperature load reduction model has passed. If so, the temperature of the reduced environment may be automatically returned to an appropriate temperature (for example, around 26° C. to 28° C.).

- Effects of Embodiment -
The temperature load reducing device (20) of this embodiment is used when exposing the user to a second environment for reducing the temperature load accumulated on the user in the first environment. The temperature load reducing device (20) mainly includes a control section (10). A control unit (10) controls a user's shell temperature BTs, a load temperature TL that is the temperature of the first environment, a reduced temperature TR that is the temperature of the second environment, and places the user in the second environment. Based on the correlation with the reduction time t, which is the exposure time (that is, the temperature load reduction model), the outer shell temperature BTs is set to the target value, and the load temperature TL, one of the reduction temperature TR and the reduction time t is input, and the other of the mitigation temperature TR and the mitigation time t is output. Therefore, the reduction temperature TR or the reduction time t for reducing the temperature load can be obtained based on the load temperature TL so that the outer shell temperature BTs of the user reaches the target value. Therefore, by air-conditioning the second environment based on this reduced temperature TR or reduced time t, the heat exchange between the skin temperature and the core body temperature is promoted, and the effects of the temperature load on the mind and body are quickly reduced. can be done. Specifically, it is possible to suppress a decrease in the user's parasympathetic nerve activity, excessive sweating that leads to dehydration, and an increase in heart rate in a hot environment. In addition, it is possible to reduce the deterioration of the body temperature control function, which is expressed by the decrease in the amount of perspiration that occurs after excessive perspiration due to long-term exposure to a hot environment. By reducing such a temperature load at an early stage, for example, work efficiency at the start of indoor work can be improved.

In addition, in the temperature load reduction device (20) of the present embodiment, models represented by equations (1) to (3) may be used as the temperature load reduction model. In this way, by experimentally calculating the model parameters in advance, it is possible to obtain the correlation among the user's outer shell temperature BTs, the load temperature TL, the reduction temperature TR, and the reduction time t. That is, it is possible to easily construct a temperature load reduction model for hot environments and a temperature load reduction model for cold environments.

Further, in the temperature load reducing device (20) of the present embodiment, if the first environment is a hot environment or a cold environment, the model parameters may be set in consideration of clothes worn by the user. In this way, the reduced temperature TR or the reduced time t that reduces the effect of the temperature load caused by the cold environment can be obtained more accurately.

Moreover, in the temperature load reducing device (20) of the present embodiment, the model parameters may be adjusted according to the attributes of the user. By doing so, it is possible to obtain the appropriate reduction temperature TR or reduction time t for reducing the influence of the temperature load according to the attribute of the user.

In addition, in the temperature load reducing device (20) of the present embodiment, the load temperature TL may be corrected in consideration of at least one of humidity, wind speed and radiation temperature in the first environment. In this way, by correctly evaluating the load temperature TL, the mitigation temperature TR or mitigation time t for mitigating the influence of the temperature load can be obtained more accurately.

The air conditioning system (100) of the present embodiment mainly includes a temperature load reducing device (20) and an air conditioner (30). The air conditioner (30) air-conditions the second environment based on the reduced temperature TR or the reduced time t output from the control section (10) of the temperature load reduction device (20). Thus, the air conditioner (30) air-conditions the second environment based on the reduced temperature or reduced time output from the control unit (10), thereby promoting heat exchange between the skin temperature and the core body temperature. , the effects of temperature load on the mind and body can be quickly reduced.

The air conditioning system (100) of the present embodiment may be configured as an outdoor air conditioning system. By doing so, it is possible to reduce the risk of heat stroke by reducing the accumulation of the temperature load on the user working outdoors and quickly lowering the body temperature and the amount of perspiration.

The air conditioning system (100) of the present embodiment may further include an adjusting section (40) configured to allow the user to change the reduction temperature TR or the reduction time t output from the control section (10). In this way, air conditioning in the second environment that reduces the temperature load can be performed according to the user's desire.

The air conditioning system (100) of the present embodiment may further include a detector (50) that detects the outer shell temperature BTs of the user. In this case, when the difference between the outer shell temperature BTs detected by the detector (50) and its target value exceeds the first predetermined value, the air conditioner (30) detects the difference between the reduced temperature TR and the normal temperature. The mitigation temperature TR may be changed to be less than or equal to a second predetermined value, or an alert may be issued to the user to cease exposure to the second environment. By doing so, it is possible to alleviate heat shock and prevent overcooling.

The air conditioning system (100) of the present embodiment may further include a sensor (60) that senses that the user has entered the second environment. In this case, the air conditioner (30) terminates air conditioning at the reduced temperature TR when the reduced time t has elapsed after the sensor (60) sensed that the user entered the second environment. may By doing so, it is possible to reduce the cost required for air conditioning using the reduced temperature TR.

<<Other embodiments>>
In the above-described embodiment, the temperature load reduction model represented by equations (1) to (3) is used. However, the temperature load reduction model is not particularly limited as long as it is a model that describes the correlation among the outer shell temperature BTs, the load temperature TL, the reduction temperature TR, and the reduction time t.

Although the embodiments have been described above, it will be appreciated that various changes in form and detail may be made without departing from the spirit and scope of the claims. In addition, the above embodiments, modifications, and other embodiments may be appropriately combined or replaced as long as the functions of the object of the present disclosure are not impaired. Furthermore, the descriptions of "first", "second", ... described above are used to distinguish the words and phrases to which these descriptions are given, and the number and order of the words and phrases are also limited. not something to do.

INDUSTRIAL APPLICABILITY The present disclosure is useful for a temperature load reduction device and a temperature load reduction method.

REFERENCE SIGNS LIST 10 control unit 20 temperature load reducing device 30 air conditioner 40 adjustment unit 50 detection unit 60 sensing unit 100 air conditioning system

Claims (12)

A temperature load reduction device (20) used when exposing the user to a second environment for reducing the temperature load accumulated on the user in the first environment,
The outer shell temperature of the user, the load temperature that is the temperature of the first environment, the reduced temperature that is the temperature of the second environment, and the time for exposing the user to the second environment The outer shell temperature is set to a target value based on a correlation with a certain reduction time, and the other of the reduction temperature and the reduction time is set using the load temperature and one of the reduction temperature and the reduction time as inputs. It has a control unit (10) that outputs
the first environment is a different location than the second environment;
The control section (10) is a temperature load reduction device that outputs the other of the reduction temperature and the reduction time when exposing the user to the second environment . The temperature load reducing device of claim 1,
The temperature load reduction device, wherein the correlation is a correlation when the load temperature is 5° C. or more away from room temperature. In the temperature load reducing device according to claim 1 or 2 ,
Assuming that the outer shell temperature is BTs, the load temperature is TL, the relief temperature is TR, and the relief time is t, the correlation is:
BTs(t)=β1×ln(t)+β2
β1=A1×TR+B1×TL-C1
β2=A2×TR+B2×TL-C2
(where ln is natural logarithm, A1, A2, B1, B2, C1, C2 are model parameters)
A temperature unloading device represented by In the temperature load reducing device of claim 3 ,
The first environment is a hot environment or a cold environment,
The model parameters A1, A2, B1, B2, C1, and C2 are set in consideration of clothes worn by the user. In the temperature load reducing device according to claim 3 or 4 ,
The temperature load reducing device, wherein the model parameters A1, A2, B1, B2, C1, and C2 are adjusted according to the attribute of the user. In the temperature load reducing device according to any one of claims 1 to 5 ,
The temperature load reduction device, wherein the load temperature is corrected in consideration of at least one of humidity, wind speed and radiation temperature in the first environment. A temperature load reducing device (20) according to any one of claims 1 to 6 ;
An air conditioning system (30) that air-conditions the second environment based on the reduced temperature or the reduced time output from the control section (10). The air conditioning system of claim 7 ,
An air conditioning system further comprising an adjustment section (40) configured such that the user can change the reduction temperature or the reduction time output from the control section (10). In the air conditioning system of claim 7 or 8 ,
Further comprising a detection unit (50) for detecting the outer shell temperature,
When the difference between the outer shell temperature detected by the detection section (50) and the target value exceeds a first predetermined value, the air conditioner (30) sets the difference between the reduced temperature and the normal temperature to a first value. 2, or alert the user to cease exposure to the second environment. In the air conditioning system according to any one of claims 7 to 9 ,
further comprising a sensing unit (60) for sensing that the user has entered the second environment;
The air conditioner (30) terminates air conditioning at the reduced temperature when the reduced time has elapsed after the sensor (60) sensed that the user entered the second environment. air conditioning system. A temperature load reduction method for use when exposing the user to a second environment for reducing the temperature load accumulated on the user in the first environment, comprising:
The outer shell temperature of the user, the load temperature that is the temperature of the first environment, the reduced temperature that is the temperature of the second environment, and the time for exposing the user to the second environment The outer shell temperature is set to a target value based on a correlation with a certain reduction time, and the other of the reduction temperature and the reduction time is set using the load temperature and one of the reduction temperature and the reduction time as inputs. and
the first environment is a different location than the second environment;
A temperature load reduction method for outputting the other of the reduction temperature and the reduction time when exposing the user to the second environment . A computer program for causing a computer to execute the temperature load reduction method according to claim 11 .

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