JP2019109008A - Fluid temperature adjustment device, usage of the same, and body temperature adjustment system - Google Patents

Abstract

To provide a fluid temperature adjustment device which inhibits influence caused by change of a posture of a worker to secure a stable body temperature adjustment function.SOLUTION: A fluid temperature adjustment device 200 includes a circuit unit, a housing 30 which houses the circuit unit, and a fixture 40. The circuit unit includes: a cold heat circuit having a compressor 211 which retains lubrication oil in a refrigerant system and a heat exchanger which cools or heats a fluid; and a fluid circuit which sends the fluid cooled or heated by the heat exchanger to a body temperature adjustment outfit. The housing 30 has: a front surface part; a rear surface part facing the front surface part; a bottom surface part in which the compressor 211 is installed; and a pedestal part which is provided between the compressor 211 and the bottom surface part and inclines the compressor 211 a predetermined angle relative to a vertical direction in a direction from the front surface part to the rear surface part. The fixture 40 fixes the housing 30 to a wearer with the front surface part facing a back surface of the wearer in the body temperature adjustment outfit.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a fluid temperature control device for controlling the temperature of fluid circulating inside a heat control clothing, a method of using the same, and a temperature control system.

  In recent years, the body temperature of the worker by circulating a cooled or heated fluid in the vicinity of the worker's body in order to enhance the comfort when working indoors in a high or low temperature work environment or outdoors in summer or winter. Development of a thermoregulatory clothing for regulation is in progress (see, for example, Patent Document 1).

  The temperature of the fluid circulating inside the thermoregulation garment is regulated by a fluid thermoregulator connected to the thermoregulation garment. The fluid temperature control device typically has a cooling circuit through which the refrigerant circulates, and a fluid circuit transmitting a fluid cooled or heated by the heat exchanger of the cooling circuit to the temperature control clothing. The fluid temperature control device is typically installed in the vicinity of the wearer (worker) of the temperature control clothing, but the fluid connection piping between the temperature control clothing and the fluid temperature control device hinders the workability. Or, there is a problem in that the working range of the worker is limited by the length of the connecting pipe. On the other hand, by attaching the fluid temperature control device to the back and the waist of the worker, it is possible to improve the workability and expand the action range.

JP, 2017-125272, A

  When the fluid temperature control device is configured to be attachable to the worker, the posture of the fluid temperature control device is also likely to change depending on the posture of the worker. For example, when the worker works in the forward tilt posture, the inclination of the fluid temperature control device with respect to the vertical direction fluctuates in the front-rear direction due to the change from the upright posture to the forward tilt posture. However, when the compressor that holds the lubricating oil in the refrigerant system constitutes a part of the cooling circuit, the liquid temperature of the lubricating oil is inclined due to the fluctuation of the inclination of the fluid temperature control device, and depending on the inclination angle This may cause a failure of the compressor, resulting in the inability to maintain the intended thermoregulatory function.

  In view of the above circumstances, an object of the present invention is to provide a fluid temperature control device capable of securing a stable temperature control function by suppressing the influence of a change in posture of a worker, a method of using the same, and a temperature control system. It is to do.

In order to achieve the above object, a fluid temperature control device according to one aspect of the present invention is a fluid temperature control device for controlling the temperature of fluid circulating in the inside of a temperature control clothing, comprising: a circuit unit; And a fixture.
The circuit unit comprises a cooling circuit having a compressor for holding lubricating oil in a refrigerant system and a heat exchanger for cooling or heating the fluid, and the fluid cooled or heated by the heat exchanger for the temperature regulation clothing And a fluid circuit for delivering to and from.
The housing accommodates the circuit unit. The housing is provided between a front surface, a rear surface facing the front surface, a bottom surface where the compressor is installed, and the compressor and the bottom surface, and the compressor is mounted on the front surface. And a pedestal portion which is inclined at a predetermined angle with respect to the vertical direction in the direction from the portion toward the rear surface portion.
The fixing device secures the housing to the wearer with the front portion directed toward the back of the wearer of the temperature control clothing.

  In the fluid temperature control device described above, the housing for supporting the compressor has a pedestal portion that allows the compressor to be inclined at a predetermined angle toward the rear surface side with respect to the vertical direction. Inclination to the front side of the compressor when taken can be suppressed. As a result, it is possible to prevent the occurrence of lubrication failure due to excessive forward inclination of the compressor, and to secure a stable fluid temperature regulation function and a thermoregulation function.

The predetermined angle is not particularly limited, and is appropriately set depending on the anteversion angle or the like with respect to the vertical direction in the working posture of the wearer.
For example, the predetermined angle is 5 degrees or more and 35 degrees or less. As a result, it is possible to secure the fluid temperature regulation function and the thermoregulation function which are stable not only in the working posture but also in the upright posture.

  The predetermined angle may be an angle at which the compressor satisfies an inclination tolerance with respect to the vertical direction when the wearer is in the upright posture. As a result, even when the wearer is in the upright position, stable fluid temperature control functions and temperature control functions can be secured.

The circuit unit may further include a tilt sensor attached to the housing, and a control unit that controls driving of the compressor based on an output of the tilt sensor.
The control unit determines an inclination angle of the compressor with respect to the vertical direction based on an output of the inclination sensor, and when the inclination angle exceeds an allowable inclination range with respect to the vertical direction of the compressor, the controller Execute processing to stop driving.
As a result, even if the compressor deviates from the inclination tolerance range, failure of the compressor due to lubrication failure can be avoided.

The fastener may include a belt that secures the housing to the waist of the wearer.
Thereby, since the inclination of the compressor at the time of attachment to the wearer can be suppressed, for example, the compressor between the upright posture and the forward leaning posture as compared with the case where the housing is attached to the wearer's back The inclination angle range of can be narrowed.

According to one aspect of the present invention, there is provided a method of using a fluid temperature control device comprising: a compressor attached to a wearer of a thermoregulatory clothing and holding lubricating oil in a refrigerant system; and a heat exchanger for cooling or heating the fluid. A method of using a fluid temperature control apparatus in which a circuit unit having a cooling circuit and a fluid circuit for delivering a fluid cooled or heated by the heat exchanger to the temperature control clothing is provided. Including the fluid temperature control device attached to the back of the person.
Attach the above fluid temperature control device to the back of the wearer,
Obtaining a statistical value regarding an inclination angle with respect to the vertical direction of the compressor in the front and rear direction of the wearer when the wearer takes a forwardly inclined posture as a predetermined working posture;
Based on the statistical value, the compressor is inclined relative to the vertical direction such that the inclination angle falls within the allowable range of inclination relative to the vertical direction of the compressor.

A thermoregulation system according to one aspect of the present invention comprises a thermoregulation garment capable of regulating the temperature of a wearer, and a fluid thermoregulator for regulating the temperature of fluid circulating inside the thermoregulation garment. Do.
The fluid temperature control device has a circuit unit, a housing, and a fixture.
The circuit unit comprises a cooling circuit having a compressor for holding lubricating oil in a refrigerant system and a heat exchanger for cooling or heating the fluid, and the fluid cooled or heated by the heat exchanger for the temperature regulation clothing And a fluid circuit for delivering to and from.
The housing accommodates the circuit unit. The housing is provided between a front surface, a rear surface facing the front surface, a bottom surface where the compressor is installed, and the compressor and the bottom surface, and the compressor is mounted on the front surface. And a pedestal portion which is inclined at a predetermined angle with respect to the vertical direction in the direction from the portion toward the rear surface portion.
The fixing device secures the housing to the wearer with the front portion directed toward the back of the wearer of the temperature control clothing.

  As described above, according to the present invention, it is possible to suppress the influence of the change in posture of the worker and secure a stable temperature control function.

It is a side view of a worker showing an example of use of a temperature control system concerning a 1st embodiment of the present invention. It is a schematic block diagram of the said thermoregulation system. It is a schematic sectional side view of the principal part of the fluid temperature control device concerning one embodiment of the present invention. It is a schematic side view which shows the inclined state of the said fluid temperature control apparatus in an upright position and a working position. It is a statistical value (frequency distribution) which shows the relationship between the inclination angle of the front-back direction of the housing | casing in the said fluid temperature control apparatus, and frequency. It is a statistical value (frequency distribution) which shows the relationship between the inclination angle of the left-right direction of the said housing | casing, and frequency. It is a side view of a worker showing an example of use of a body temperature regulation system concerning a 2nd embodiment of the present invention. It is a schematic side view which shows the inclined state of the fluid temperature control apparatus in the said thermoregulation system. It is a statistical value (frequency distribution) which shows the relationship between the inclination angle of the front-back direction of the housing | casing in the said fluid temperature control apparatus, and frequency. It is a statistical value (frequency distribution) which shows the relationship between the inclination angle of the left-right direction of the housing | casing in the said fluid temperature control apparatus, and frequency.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First Embodiment
FIG. 1 is a side view of a worker showing an example of use of the temperature control system 1 according to the first embodiment of the present invention, and FIG. 2 is a schematic configuration view of the temperature control system 1.

[Thermoregulation system]
The thermoregulation system 1 of the present embodiment includes a thermoregulation garment 100 and a fluid thermoregulator 200.
The thermoregulatory clothing 100 is a suitable form of clothing wearable by the worker U, and is a circulation of a fluid (in this example, water) capable of regulating (cooling or heating) the temperature of the worker U. It has a passage.
The fluid temperature control device 200 incorporates a cooling circuit for controlling the temperature of the fluid circulating in the inside of the temperature control clothing 100. The worker U is not particularly limited, and typically, workers at welding sites, civil engineering sites, and the like correspond.

  In the temperature control system 1 of the present embodiment, the fluid temperature control device 200 is mounted behind the worker U, so that the temperature control system 1 can be moved integrally with the worker U wearing the temperature control clothes 100.

[Thermal control clothes]
As shown in FIG. 2, the temperature control garment 100 has a main body 10 and a circulation passage 15 formed inside the main body 10.

  The main-body part 10 has the trunk | drum 11, the sleeve part 12, and the collar part 13 which were comprised according to the figure of the worker U who is a wearer. The torso portion 11 has a front body and a back body, and typically includes a slide fastener as a closing means at the joint between the right front body and the left front body. The main body portion 10 is formed of, for example, a laminate obtained by welding a plurality of deformable resin sheets at appropriate positions, a laminate of the resin sheet and a heat insulating sheet, or the like.

  The main body 10 has a water inlet 151 and a water outlet 152 connected to the circulation passage 15. The water inlet 151 and the water outlet 152 are typically provided at appropriate positions of the trunk 11.

  The circulation passage 15 is configured to be capable of circulating fluid to each part of the body 11, the sleeve 12 and the collar 13. The circulation passage 15 is typically formed of a non-welded portion between two resin sheets constituting the main body portion 10, and each portion of the main body portion 10 is the cooling water (or heated water) which has entered from the water inlet 151. It has an optional flow pattern that can be routed to the site and then led to the outlet 152. The circulation passage 15 is not limited to the case where it is formed by a single flow path connecting the water inlet 151 and the water outlet 152, and may include a branch flow passage or a combined flow passage formed at an appropriate position. .

  The circulation passage 15 is fluidly connected to the fluid circuit 22 of the fluid temperature control device 200 via the connection pipe 16 and the couplers 17 (171 and 172) respectively connected to the water inlet 151 and the water outlet 152.

[Fluid temperature control device]
Subsequently, the details of the fluid temperature control device 200 will be described.

  The fluid temperature control device 200 includes a circuit unit 20, a housing 30 that houses the circuit unit 20, and a fixing belt 40 (fixing tool) that fixes the housing 30 to the waist of the worker U.

  The circuit unit 20 includes a cooling and heating circuit 21, a fluid circuit 22, a control unit 23 that controls the circuit unit 20, and a tilt sensor 24.

The cooling circuit 21 is composed of a refrigeration cycle circuit that uses a refrigerant as a working fluid, and includes a compressor 211, a condenser 212, a capillary tube 213, and an evaporator 214. Hereinafter, the case where the fluid (water) in the fluid circuit 22 is cooled to a predetermined temperature by using the evaporator 214 as a heat exchanger will be described.
The fluid in the fluid circuit 22 can be heated to a predetermined temperature by causing the evaporator 214 to function as a condenser and the condenser 212 to function as an evaporator.

The compressor 211 is configured by a compressor that holds a lubricating oil in a refrigerant system. The lubricating oil is stored at the bottom of the compressor 211, and the necessary amount is pumped up from the storage location in conjunction with the operation of compressing the gas refrigerant supplied from the evaporator 214 to lubricate the sliding portion inside the compressor 211. Do.
The condenser 212 condenses and liquefies the high-temperature and high-pressure refrigerant gas discharged from the compressor 211. The condenser 212 is additionally provided with a fan 215 for promoting the condensation efficiency as needed. The refrigerant condensed in the condenser 212 is adiabatically expanded in the capillary tube 213 and evaporated (vaporized) in the evaporator 214. Instead of the capillary tube 213, an electronic expansion valve or the like may be employed.

  The fluid circuit 22 is detachably connected to the water intake pipe 221 which is detachably connected to the outlet 152 of the temperature control clothes 100 via the coupler 172 and to the water inlet 151 of the temperature control clothes 100 via the coupler 171. And a water supply pipe 222.

  The fluid circuit 22 further includes a tank 223 storing fluid introduced through the water absorption pipe 221 (hereinafter, also referred to as cooling water), and a pump 224 discharging the cooling water in the tank 223 toward the evaporator 214. Have. The cooling water discharged from the pump 224 is cooled in the evaporator 214 by losing heat corresponding to the latent heat of vaporization of the refrigerant. The cooling water cooled to a predetermined temperature in the evaporator 214 is delivered to the water inlet 151 of the temperature control clothing 100 via the water supply pipe 222.

  The control unit 23 is typically configured by a computer having a CPU (Central Processing Unit) and a memory. The control unit 23 controls the driving of the compressor 211, the fan 215, the pump 224, and the like. The control unit 23 is configured to calculate the inclination angle of the compressor 211 with respect to the vertical direction based on the output of the inclination sensor 24 and to control the operation of the compressor 211 based on the calculated inclination angle. .

  The inclination sensor 24 is attached to an appropriate position of the housing 30, and is configured to be able to detect an inclination angle in the front-rear direction of the housing 30 with respect to the vertical direction. The tilt sensor 24 may be configured to be able to detect the tilt angle in the left and right direction of the housing 30 with respect to the vertical direction. The inclination sensor 24 may employ an appropriate sensor such as an acceleration sensor, a gravity sensor, or an electrostatic sensor. The inclination sensor 24 is not limited to being directly attached to the housing 30, and may be attached to the compressor 211 installed in the housing 30.

  The housing 30 is formed in a substantially rectangular parallelepiped shape having a front surface portion 31, a rear surface portion 32, a bottom surface portion 33, a top surface portion 34, both side surface portions, and the like. The housing 30 is typically made of a metal material, but may be made of a synthetic resin material, a composite of a metal material and a synthetic resin material, or the like.

  A fixed belt 40 is attached to the front portion 31. The fixing belt 40 is for attaching the housing 30 to the back of the waist of the worker U, and has a buckle capable of adjusting the tightening force. The fixing position of the fixing belt 40 with respect to the front surface portion 31 is not particularly limited, and in the present embodiment, the fixing belt 40 is fixed at a lower position of the front surface portion 31 than the bottom surface portion 33. Thereby, it is possible to suppress the fluctuation of the inclination angle with respect to the vertical direction of the housing 30 and the compressor 211 due to the posture change of the worker U (see FIGS. 4A and 4B).

  A waistrest member 36 (see FIG. 1) may be further installed on the front surface portion 31. The waist rest member 36 preferably has a cushioning property, for example. Thereby, the gap between the housing 30 and the back surface of the worker U can be eliminated to improve the fit.

Although not illustrated, the housing 30 is provided with an input operation unit, a display unit, and the like on the rear surface unit 32. The input operation unit includes operation keys such as a power switch and a temperature setting unit. The display unit is configured of an appropriate display element such as a liquid crystal display that displays the input state of the input operation unit. The display control of the display unit is executed by, for example, the control unit 23.
Note that the input operation unit and the display unit are not limited to the example installed on the rear surface unit 32, and may be installed on the top surface unit 34 or the side surface unit of the housing 30. Alternatively, an input operation may be performed via a remote controller (not shown).

  The fluid temperature control device 200 further includes a power cable 37 for supplying power to the circuit unit 20. The power supply cable 37 extends from, for example, the side surface of the housing 30 to the outside. The power cable 37 has an adapter 38 for converting alternating current to direct current.

  The fluid temperature control device 200 may include a chargeable battery unit instead of or in addition to the power supply cable 37. As a result, the temperature control system 1 can be operated without the need for an external power source, and the action range of the worker U is expanded, and the freedom of movement is enhanced.

(Installation structure of compressor)
The internal space of the housing 30 is configured as a storage space for the circuit unit 20. The layout of the circuit unit 20 in the housing 30 is not particularly limited, and can be set as appropriate. Typically, the compressor 211 of the cooling and heating circuit 21 is installed on the bottom portion 33 of the housing 30.

  FIG. 3 is a schematic side sectional view of an essential part of the fluid temperature control device 200 showing the relationship between the housing 30 and the compressor 211. As shown in FIG.

  As shown in FIG. 3, the housing 30 has a pedestal 35 provided between the bottom 33 and the compressor 211. The pedestal portion 35 has a support surface 351 that inclines the compressor 211 in the direction from the front surface portion 31 to the rear surface portion 32 by a predetermined angle α1 with respect to the vertical direction (vertical direction). That is, the support surface 351 is formed of an inclined surface which is inclined downward toward the rear surface portion 32 by a predetermined angle α1 with respect to the horizontal surface.

The bottom portion 33 is typically configured in a plane. For this reason, when the housing 30 is placed on the floor or table surface, the axis P along the height direction of the compressor 211 in the housing 30 is a vertical line V, as shown in FIG. To the rear surface portion 32 side and fixed to the support surface 351 of the pedestal portion 35 by being inclined at a predetermined angle α1.
The tilt sensor 24 is calibrated so that the detection angle when the housing 30 is placed on a floor surface or the like is 0 degree. The control unit 23 calculates the inclination direction and the inclination angle with respect to the vertical line V of the compressor 211 based on the output of the inclination sensor 24.

  4A and 4B show the housing 30 and the compressor installed therein when the worker U is in the upright posture and the posture for performing predetermined work with forward bending (hereinafter referred to as the working posture or the forward leaning posture). The inclination state of 211 is shown, respectively.

  As shown in FIGS. 4A and 4B, the inclination direction and the angle of the compressor 211 with respect to the vertical line V change depending on when the worker U is in the upright posture and in the working posture. In the illustrated example, when the worker U is in the upright posture, the compressor 211 is inclined rearward by the angle θ1 with respect to the vertical line V, and when the worker U is in the working posture, the compressor 211 is the vertical line It is inclined forward with respect to V by an angle θ2.

  On the other hand, in the compressor 211 which holds the lubricating oil in the refrigerant system, an allowable tilt range with respect to the vertical direction (vertical line V) is generally set. Although the inclination tolerance varies depending on the type and specifications of the compressor 211, it is typically determined by the inclination tolerance of the liquid level Fs (see FIG. 3) of the lubricating oil stored at the bottom of the compressor 211. Ru. That is, when the liquid level Fs of the lubricating oil inclines more than a predetermined amount, it becomes difficult to suck the lubricating oil to the sliding portion such as the bearing or the internal mechanism including the motor, resulting in a lubrication failure of the internal mechanism. Cause a failure of the compressor.

  In the present embodiment, since the compressor 211 is installed in the housing 30 in a state in which the compressor unit 35 is inclined toward the rear surface 32 by a predetermined angle α1 in advance with respect to the vertical line V, the worker U leans forward. The angle of forward inclination of the compressor 211 when taking out is suppressed to be small by a predetermined angle α1. As a result, since the frequency at which the compressor 211 deviates from the tilt allowable range is suppressed, the compressor 211 can be stably driven even in the working posture, and the fluid circulating through the temperature control clothing 100 (cooling water) Maintain a stable temperature to ensure proper thermoregulatory function. Thereby, the influence by the posture change of the worker U can be suppressed, and the stable temperature control function can be secured.

  The predetermined angle α1 is preferably set to an angle that satisfies the tilt tolerance range of the compressor 211 in both the upright posture and the working posture of the worker U. Thus, it is possible to secure an appropriate temperature control function not only in the working posture but also in the upright posture such as walking.

FIG. 5 is a statistical value (frequency distribution) when the housing 30 is attached to the back of the waist of the worker U and the inclination angle in the front-rear direction is acquired.
In FIG. 5, S1 indicates 0 °. The peak P1 corresponds to the upright posture of the worker U (FIG. 4A), and the peak P2 corresponds to the work posture of the worker U (FIG. 4B). Assuming that the tilt allowable range RA of the compressor 211 is ± 30 ° (30 ° to the rear warp side, 30 ° to the front curve side), the center value C of the tilt allowable range RA is set to any angular position on the frequency distribution Then, the initial inclination angle (predetermined angle α1) of the compressor 211 suitable for the worker U is determined.

  In the present embodiment, the center value C of the tilt allowable range RA of the compressor 211 is set to the angular position with the highest frequency among the obtained frequency distributions. In this case, an angle θc (about 5 ° in the example of FIG. 5) corresponding to the difference between the angle of the peak P1 and the center value C is set as the predetermined angle α1. Thereby, it becomes possible to optimize the predetermined angle α1 adapted to the figure of the worker U and the pattern of movement, and secure the lubricating function originally possessed by the compressor 211, and the stable continuous operation of the compressor 211 The fluid temperature control device 200 can be used while maintaining as much as possible.

  The method of determining the predetermined angle α1 is not limited to the above example, and may be, for example, an arbitrary angle (θc ± β) shifted by a predetermined amount in the forward bending direction or the backward warpage direction with reference to the angle θc. It may be an intermediate angle (P1 + P2) / 2 between P1 and P2.

  As described above, the frequency of deviation from the allowable tilt range RA of the compressor 211 can be further suppressed by determining the predetermined angle α1 based on the statistical value of the tilt angle of the housing 30 actually acquired at the work site. The mounting attitude of the compressor 211 to the possible housing 30 can be set.

The pedestal portion 35 may be integrally formed with the bottom surface portion 33, but may be configured as a separate member from the bottom surface portion 33. In this case, a plurality of pedestals 35 having different inclination angles (α1) of the support surface 351 may be prepared. Thereby, the pedestal 35 having the optimum inclination angle (α1) can be selected according to the attachment position of the housing 30 to the worker U, the work posture, and the like. Alternatively, a pedestal having an angle adjustment mechanism capable of adjusting the inclination angle (α1) of the support surface 351 to an arbitrary angle may be employed. As a result, the optimum inclination angle (α1) can be set according to the individual difference of the worker who is the mounting object.

  6 is a statistical value (frequency distribution) similar to FIG. 5 when the inclination angle in the left-right direction of the compressor 211 is acquired. From the figure, it is difficult to make a difference in the inclination of the compressor 211 in the lateral direction between the upright posture and the working posture (forward lean posture), and the frequency with which the operator U works in the lateral direction is small. Since there are also, the inclination angle range of the compressor 211 in the left and right direction is smaller than that in the front and rear direction shown in FIG. For this reason, it is estimated that the operation of the compressor 211 stable in the left-right direction can be realized by the initial inclination angle (predetermined angle α1) determined based on FIG. 5.

(How to operate the compressor)
On the other hand, even when the compressor 211 is inclined within the allowable inclination range RA, the operation of the compressor 211 is performed according to the inclination angle of the housing 30 in order to achieve the effect of protection of the compressor 211 from insufficient lubrication. It is preferable to change the conditions.

  In the present embodiment, based on the output of the inclination sensor 24, the control unit 23 calculates the inclination angle θ in the front-rear direction with respect to the vertical line V of the compressor 211 that changes according to the movement of the worker U.

As shown in FIG. 5, the frequency at which the compressor 211 deviates from the inclination tolerance is not complete. For this reason, the control unit 23 determines the inclination angle θ of the compressor 211 based on the output of the inclination sensor 24 and drives the compressor 211 when the inclination angle θ exceeds the allowable inclination range RA of the compressor 211. Execute the process to stop the As a result, even if the allowable inclination range RA is exceeded, the compressor 211 can be protected from failure due to a lubrication failure.
Further, an alarm may be sounded when the inclination angle θ exceeds the inclination allowable range RA, and the compressor 211 may be stopped when the state continues, for example, for 60 seconds or more. Further, the number of revolutions of the compressor 211 may be reduced during the alarm.

Second Embodiment
FIG. 7 is a side view of a worker showing an example of use of the temperature control system 2 according to the second embodiment of the present invention. Hereinafter, the configuration different from the first embodiment will be mainly described, and the same configuration as that of the first embodiment is denoted by the same reference numeral, and the description thereof will be omitted or simplified.

  The temperature control system 2 of this embodiment is different from the first embodiment in that the fluid temperature control device 200 is configured to be attachable to the back of the worker U.

  In the present embodiment, the fixture of the fluid temperature control device 200 includes a pair of straps 41 bridged over the shoulders of the worker U. Both ends of the strap 41 are respectively fixed near upper and lower end portions of the front surface portion 31 of the housing 30 of the fluid temperature control device 200. The front portion 31 may be provided with a backrest member 39 (see FIGS. 8A and 8B) having a cushioning property.

  8A and 8B show the housing 30 and the compressor installed therein when the worker U is in the upright posture and the posture for performing predetermined work with forward bending (hereinafter referred to as the working posture or the forward leaning posture). The inclination state of 211 is shown, respectively.

  As shown in FIGS. 8A and 8B, the inclination direction and the angle of the compressor 211 with respect to the vertical line V change depending on when the worker U is in the upright posture and in the working posture. In the illustrated example, when the worker U is in the upright posture, the compressor 211 is inclined rearward by the angle θ3 with respect to the vertical line V, and when the worker U is in the working posture, the compressor 211 is the vertical line It is inclined forward with respect to V by an angle θ4.

  In the present embodiment, the inclination angle of the compressor 211 is large in any of the upright posture and the working posture as compared with the first embodiment. This is due to the difference in the method of attaching the case 30 to the worker U, and the case where the case 30 is installed on the back of the worker U is more than the case where the case 30 is installed on the waist. The inclination of the body 30 to the rear side is large. Also in the present embodiment, the initial inclination angle of the compressor 211 in which the inclination angle of the compressor 211 is the inclination allowable range in the upright posture and the work posture is determined based on the statistical value.

  FIG. 9 shows statistical values (frequency distribution) when the housing 30 is attached to the back of the worker U and the inclination angle in the front-rear direction is acquired. FIG. 10 is a statistical value (frequency distribution) similar to FIG. 9 when the inclination angle in the left-right direction of the compressor 211 is acquired.

  In FIG. 9, S2 indicates 0 °. The peak P3 corresponds to the upright posture (FIG. 8A) of the worker U, and the peak P4 corresponds to the work posture (FIG. 8B) of the worker U. Assuming that the tilt allowable range RA of the compressor 211 is ± 30 ° (30 ° to the rear warp side, 30 ° to the front curve side), the center value C of the tilt allowable range RA is set to any angular position on the frequency distribution Then, the initial inclination angle (predetermined angle α2) of the compressor 211 suitable for the worker U is determined.

  In the present embodiment, the angle difference between the peak P3 and the peak P4 exceeds the inclination allowable range RA. For this reason, the determined position of the center value C of the inclination allowable range RA becomes a problem. In the present embodiment, as shown in FIG. 9, the center value C is set such that the peak P4 falls within the inclination allowable range RA. The initial inclination angle (α2) of the compressor 211 with respect to the housing 30 at this time is an angle θc (about 35 ° in the example of FIG. 9) corresponding to the difference between the angle of the peak P3 and the center value C.

  According to the present embodiment, it is possible to secure the desired temperature control function while avoiding the lubrication failure of the compressor 211 as much as possible while at least the worker U is in the working posture (the forward tilting posture). . On the other hand, when the worker U takes the upright posture, the tilt angle of the compressor 211 deviates from the tilt allowable range, so it is preferable to execute the drive stop control of the compressor 211 by the control unit 23. As a result, deterioration and damage due to the insufficient lubrication of the compressor 211 can be avoided.

  The initial inclination angle (α2) of the compressor 211 may be set to the center value C so that the peak P3 corresponding to the upright posture of the operator U falls within the allowable inclination range RA. . In this case, it is particularly advantageous, for example, when the time for taking the upright posture is longer than the time for taking the working posture.

  As mentioned above, although embodiment of this invention was described, this invention is not limited only to the above-mentioned embodiment, of course, a various change can be added.

  For example, in the first embodiment described above, the housing 30 of the fluid temperature adjustment device 200 is configured to be attachable to the waist of the worker U via the fixing belt 40, but in the second embodiment as a fixing tool The strap 41 described or an auxiliary member according to this may be used in combination. Accordingly, it is possible to prevent the compressor 211 from deviating from the inclination allowable range by restricting an unintended inclination to the rear side of the housing 30 attached to the waist.

  Further, in the second embodiment described above, the shape of the backrest 39 may be changed to, for example, a triangular shape in cross section so as to reduce the inclination of the housing 30 to the rear side when the worker U is in the upright posture. It is possible. As a result, the angular position of the peak P3 shown in FIG. 9 can be made closer to the angular position of the peak P4, so that both of the peaks P3 and P4 can be set within the allowable inclination range of the compressor 211.

  Furthermore, although the case where the fluid which flows through the circulation passage 15 of the thermoregulation clothing 100 is water was mentioned as an example and explained in each above-mentioned embodiment, it is not restricted to this, for example, other aqueous solutions, such as antifreeze, etc. It may be an aqueous solution.

  Furthermore, although the inclination angles (α1 and α2) of the compressor 211 with respect to the housing 10 are fixed in each of the above embodiments, the control unit 23 dynamically changes the inclination angle of the compressor 211 based on the output of the inclination sensor 24. The pedestal portion 35 may be configured to be able to be changed to Thereby, the compressor 211 can always be maintained in the inclination tolerance range, and a stable fluid temperature control function can be secured.

1, 2 ... temperature regulation system 15 ... circulation passage 20 ... circuit unit 21 ... cooling circuit 22 ... fluid circuit 23 ... control unit 24 ... inclination sensor 30 ... housing 31 ... front section 32 ... rear section 33 ... bottom section 35 ... pedestal Part 40: Fixing belt (fixing tool)
41 ... strap (fixing device)
100 ... temperature control clothing 200 ... fluid temperature control device 211 ... compressor 212 ... condenser 213 ... evaporator (heat exchanger)
U: Worker

Claims (7)

What is claimed is: 1. A fluid temperature control device for controlling the temperature of fluid circulating inside a temperature control clothing, comprising:
A cooling circuit having a compressor for holding lubricating oil in a refrigerant system and a heat exchanger for cooling or heating the fluid, and a fluid circuit for delivering the fluid cooled or heated by the heat exchanger to the thermoregulation clothing And a circuit unit including
A housing that accommodates the circuit unit, and is provided between a front surface, a rear surface facing the front surface, a bottom surface where the compressor is installed, and the compressor and the bottom surface A housing having a pedestal portion for tilting the compressor by a predetermined angle with respect to the vertical direction in a direction from the front surface portion toward the rear surface portion;
A fixture for securing the housing to the wearer with the front portion directed toward the back of the wearer of the thermoregulation garment. The fluid temperature control device according to claim 1, wherein
The predetermined angle is not less than 5 ° and not more than 35 °. The fluid temperature control device according to claim 1 or 2, wherein
The fluid temperature adjusting device, wherein the predetermined angle is an angle at which the compressor satisfies an inclination tolerance with respect to the vertical direction when the wearer is in the upright posture. The fluid temperature control device according to any one of claims 1 to 3, wherein
The circuit unit further includes a tilt sensor attached to the housing, and a control unit that controls driving of the compressor based on an output of the tilt sensor.
The control unit determines an inclination angle with respect to the vertical direction of the compressor based on an output of the inclination sensor, and when the inclination angle exceeds an allowable inclination range with respect to the vertical direction of the compressor, the controller A fluid temperature control device that executes a process to stop driving. The fluid temperature control device according to any one of claims 1 to 4, wherein
The fixing device includes a belt for fixing the housing to a waist of a wearer. A cooling circuit attached to a wearer of a thermoregulation clothing and having a compressor holding lubricating oil in a refrigerant system and a heat exchanger for cooling or heating the fluid, and the fluid cooled or heated by the heat exchanger Using the fluid temperature control apparatus in which a circuit unit having a fluid circuit for delivering the temperature control clothes to the temperature control clothes is housed in a housing,
Attach the fluid temperature control device to the back of the wearer,
Obtaining a statistical value regarding an inclination angle with respect to the vertical direction of the compressor in the front-rear direction of the wearer when the wearer takes a forward working posture, which is a predetermined working posture;
A method of using a fluid temperature control device, comprising: tilting the compressor with respect to the vertical direction such that the tilt angle falls within a tilt allowable range with respect to the vertical direction of the compressor based on the statistical value. With temperature control clothes that can adjust the temperature of the wearer,
A fluid temperature control device for controlling the temperature of the fluid circulating inside the temperature control clothing;
The fluid temperature control device
A cooling circuit having a compressor for holding lubricating oil in a refrigerant system and a heat exchanger for cooling or heating the fluid, and a fluid circuit for delivering the fluid cooled or heated by the heat exchanger to the thermoregulation clothing And a circuit unit including
A housing that accommodates the circuit unit, and is provided between a front surface, a rear surface facing the front surface, a bottom surface where the compressor is installed, and the compressor and the bottom surface A housing having a pedestal portion for tilting the compressor by a predetermined angle with respect to the vertical direction in a direction from the front surface portion toward the rear surface portion;
A fixture for securing the housing to the wearer with the front portion directed to the back of the wearer of the thermoregulation garment.

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