JP2010270975A - Dehumidifying device with temperature regulating function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dehumidifying device with a temperature regulating function capable of solving a problem in a conventional temperature regulating device that a dehumidifying degree is insufficient as a humidity of a discharged temperature-regulated gas is not regulated, so that the temperature-regulated and sufficiently-dehumidified gas can be discharged. <P>SOLUTION: This dehumidifying device includes a heating circuit side with a heater 14 to which a heat medium heated by being compressed by a compressor 18 is supplied, a cooling circuit side with coolers 16, 16 to which a heat medium cooled by adiabatically expanded by a first expansion valve 28 is supplied, a heat pump means, a desiccant rotor 50 including a moisture absorbing agent for absorbing moisture in the air passing through the heater 14 and the coolers 16, 16, and a temperature control section 22 controlling two-way valves 20a, 20b for distribution to the heating circuit side and the cooling circuit side, and controlling a temperature of the air passing through a heating flow channel, a cooling flow channel and the desiccant rotor 50 to a prescribed temperature. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a dehumidifying device with a temperature adjustment function.

Usually, in the precision processing field such as the manufacturing process of semiconductor devices, most of them are installed in a clean room in which temperature and humidity are controlled.
However, in recent years, in the precision processing field, processes requiring precision processing with higher processing accuracy than before have been emerging.
In a process that requires such high precision processing, it is usually required that the temperature change environment is smaller than that of a clean room. For this reason, a process requiring high precision processing or the like is provided in a space unit in which precise temperature management is performed.
As a temperature adjusting device used for adjusting the temperature of such a space unit, for example, the following Patent Document 1 proposes a temperature adjusting device shown in FIG.
10 includes a heating flow path in which a part of the high-temperature heat medium compressed and heated by the compressor 100 is supplied to the heater 102, and the remainder of the high-temperature heat medium is the condenser 104. And a cooling channel that is adiabatically expanded by the first expansion valve 106 and then cooled and supplied to the cooler 108, and is a temperature adjustment target sucked into the space unit 110 by the fan 112. The high-temperature heat medium is distributed to the heating flow path and the cooling flow path, and the heating flow path and the cooling flow path are adjusted such that the air passes through the heater 102 and the cooler 108 and is adjusted to a predetermined temperature. 2 is a temperature adjusting device in which the heat medium that has passed through each of these is re-supplied to the compressor 100.
In this temperature adjusting device, a part of the high-temperature heat medium discharged from the compressor 100 is distributed to the heating flow path side, and the remaining portion of the high-temperature heat medium is distributed to the cooling flow path side, and the heating flow path and the cooling channel are cooled. The proportional three-way valve 114 capable of changing the distribution ratio of the high-temperature heat medium distributed to the flow path, and the heater 102 after releasing the heat and cooling so that the heating capacity of the heating flow path is improved. The heat medium that is adiabatically expanded by the two expansion valve 116 and further cooled is controlled by the heat pump means including the heat absorber 118 that absorbs heat from water as an external heat source, the proportional three-way valve 114, and the heating flow path and cooling. There is provided a control unit 120 for adjusting the distribution ratio of the high-temperature heat medium distributed to the flow path to control the temperature adjustment target air passing through the heater 102 and the cooler 108 to a predetermined temperature. .

International Publication No. 2008/078525 Pamphlet

In the temperature adjustment device shown in FIG. 10, the temperature of the space unit 110 can be controlled with an accuracy of ± 0.1 ° C. with respect to the target temperature, and energy saving can be achieved.
By the way, in the temperature adjusting device shown in FIG. 10, since the air to be adjusted passes through the heater 102, the air discharged from the temperature adjusting device to the space unit 110 is more dehumidified than the air sucked into the temperature adjusting device. Has been.
However, the humidity of the air discharged from the temperature adjustment device shown in FIG. 10 is not adjusted. For this reason, variation exists in the humidity of the air discharged from the temperature control apparatus shown in FIG.
In some cases, dehumidified air that is further dehumidified than the humidity of the air discharged from the temperature control device shown in FIG. 10 is required.
Therefore, an object of the present invention is to solve the problem of a conventional temperature adjustment device in which the humidity of the discharged temperature-adjusted gas is not adjusted and the degree of dehumidification is insufficient, and the temperature is adjusted and the moisture is sufficiently dehumidified. An object of the present invention is to provide a dehumidifying device with a temperature adjusting function capable of discharging gas.

The present inventors have studied to solve the above problem, and by passing the air that has passed through the heater 102 and the cooler 108 of the temperature adjusting device shown in FIG. 10 through the desiccant part containing the hygroscopic agent, It has been found that sufficiently dehumidified air can be discharged and energy saving can be achieved.
That is, as means for solving the problem, a heating flow path in which a part of the high-temperature first heat medium that is compressed and heated by a compressor is supplied to the heating means, and the remaining portion of the high-temperature first heat medium Is cooled by the condensing means and then adiabatically expanded by the first expansion means, further cooled and supplied to the cooling means, and a part of the high-temperature first heat medium discharged from the compressor Is distributed to the heating flow path side, the remaining portion of the high temperature first heat medium is distributed to the cooling flow path side, and the distribution ratio of the high temperature first heat medium distributed to the heating flow and the cooling flow path is In order to improve the heating capacity of the heating flow path, the distribution means that can change the temperature of the heating flow path, and the second expansion means is adiabatically expanded after being cooled by releasing heat by the heating means and further cooled. One heat medium includes heat absorption means for absorbing heat from a second heat medium that is an external heat source. And a desiccant part containing a hygroscopic agent that adsorbs moisture in the gas that has passed through the heating unit and the cooling unit, and the first pump unit that has passed through each of the heating channel, the cooling channel, and the heat pump unit. A dehumidifying device with a temperature adjustment function in which the heat medium is re-supplied to the compressor, wherein the distribution means controls the distribution means and distributes the high temperature first heat medium distributed to the heating flow path and the cooling flow path Thus, a dehumidifying device with a temperature adjustment function can be provided in which a temperature control unit is provided to control the temperature of the gas that has passed through the heating channel, the cooling channel, and the desiccant unit to a predetermined temperature.

In the means for solving the problems provided by the present inventors, the following preferred embodiments can be raised.
The cooling medium that cools the remaining portion of the high-temperature first heat medium that passes through the condenser that constitutes the condensing means is used as an air flow, and the temperature is increased through the condenser as a moisture absorbent contained in the desiccant part. Further, by using a hygroscopic agent from which adsorbed moisture is desorbed by heating with the air flow, it can be effectively used for desorption of moisture from the adsorbent only by exhaust heat in the condenser, and further energy saving can be achieved. .
Further, as the desiccant part, a desiccant part in which a non-adsorbed part containing a hygroscopic agent capable of adsorbing moisture and an adsorbed part containing a moisture absorbent adsorbing moisture coexist is used. The desiccant part is repeatedly prepared by providing a desorption part that heats the part, desorbs the moisture from the moisture absorbent that has adsorbed moisture, and regenerates the unadsorbed part containing the moisture absorbent capable of adsorbing moisture. It can be used as a wet member.
By providing such a desorption part at a position where the heated air flow is blown through the condenser, the heat removed from the high-temperature first heat medium by the condenser can be effectively used.
Further, a desiccant rotor is used as the desiccant part, and the desiccant rotor containing the moisture absorbent adsorbing moisture is moved to the position of the desorption part for desorbing moisture from the moisture absorbent. By providing the drive unit that rotationally drives the gas, the portion containing the unadsorbed hygroscopic agent that has the ability to adsorb moisture can be always positioned with respect to the gas that has passed through the heating means and the cooling means.
An expansion valve control unit that uses an automatic expansion valve as the first expansion means and controls the opening degree of the automatic expansion valve so that the temperature of the heat medium supplied to the cooling means and the degree of superheat of the compressor are within a predetermined range. By providing this, stable operation of the compressor can be achieved and frosting of the cooler can be prevented.

According to the dehumidifying device with a temperature adjustment function proposed by the present inventors, the gas to be dehumidified is adjusted to a predetermined temperature by the cooling means and the heating means, and the moisture in the gas is adjusted by the moisture absorbent in the desiccant part. Can be fully dehumidified.
For this reason, the dehumidified apparatus can discharge a gas that is adjusted to a predetermined temperature and is sufficiently dehumidified.
In addition, since the heat pump means is employ | adopted in this dehumidification apparatus with a temperature control function, energy saving can be aimed at.

It is the schematic explaining an example of the dehumidification apparatus with a temperature adjustment function which the present inventors provide. It is a block diagram explaining the temperature control part 22 of the dehumidifier with a temperature adjustment function shown in FIG. It is a graph which shows the flow volume characteristic of two-way valve 20a, 20b shown in FIG. It is a perspective view of the desiccant rotor 50 shown in FIG. It is explanatory drawing explaining the temperature of the airflow of the dehumidification object with respect to the desiccant roller 50 shown in FIG. 1, and the temperature of the airflow of moisture removal | desorption. It is the schematic explaining the other example of the dehumidification apparatus with the temperature adjustment function which the present inventors provide. It is a block diagram explaining the control part of the dehumidification apparatus with a temperature adjustment function shown in FIG. It is the schematic explaining the other example of the dehumidification apparatus with the temperature adjustment function which the present inventors provide. It is explanatory drawing explaining the temperature of the airflow of the dehumidification object with respect to the desiccant roller 50 shown in FIG. 8, and the temperature of the airflow of moisture removal | desorption. It is the schematic explaining the conventional precision temperature control apparatus.

FIG. 1 is a schematic diagram illustrating an example of a dehumidifying device with a temperature adjustment function proposed by the present inventors. The dehumidifying device with a temperature adjusting function shown in FIG. 1 is a dehumidifying device for obtaining a gas that is adjusted to a predetermined temperature and sufficiently dehumidified.
In the dehumidifying device with a temperature adjusting function shown in FIG. 1, a heating channel and a cooling channel for adjusting the temperature of air as a gas to be dehumidified sucked by the fan 12 are provided in the space unit 10.
A heater 14 as a heating means for forming such a heating flow path and coolers 16 and 16 as cooling means for forming a cooling flow path are provided, and the air to be dehumidified passes through the cooler 16 and is dehumidified. Thereafter, the coolers 16 and 16 and the heater 14 are disposed so as to pass through the heater 14.
In this way, by using the two coolers 16 and 16 as the cooling means, the heat exchange capacity of the cooling means is increased as compared with the heating means using one heater 14, and the dehumidification target air is dehumidified. Can be performed sufficiently.
Note that one cooler 16 may be used as long as the heat exchange capacity of the cooler 16 satisfies the dehumidifying capacity.

In the dehumidifying apparatus with a temperature adjustment function shown in FIG. 1, the first heat medium supplied to the heater 14 and the coolers 16 and 16 is, for example, hydrocarbons such as propane, isobutane and cyclopentane, chlorofluorocarbons, ammonia and carbonic acid. Gas is used. By such vaporization and liquefaction of the first heat medium, the air in the clean room is heated and cooled to be adjusted to a predetermined temperature.
Such a first heat medium is compressed and heated by the compressor 18 and discharged in the form of a gas at a high temperature (for example, 70 ° C.). The high-temperature first heat medium discharged from the compressor 18 is distributed as a two-way valve 20a, 20b as a distribution means, on the heating channel side provided with the heater 14, and on the cooling channel side provided with the coolers 16, 16. Distributed to.

The high temperature first heat medium distributed to the heating flow path side by the two-way valves 20a and 20b is directly supplied to the heater 14, and is sucked into the space unit 10 and heated by the cooler 16 to heat the air flow. To adjust the temperature. At that time, the high-temperature first heat medium is radiated and cooled to become the first heat medium containing the condensate.
On the other hand, the high-temperature first heat medium distributed to the cooling channel side is cooled by the condenser 26 as the condensing means and then adiabatically expanded by the first expansion valve 28 to be further cooled (for example, cooled to 10 ° C.). ) The first expansion valve 28 may be a manual expansion valve or a capillary tube.
The cooled first heat medium is supplied to the coolers 16 and 16 to cool and dehumidify the air flow sucked into the space unit 10.
The condenser 26 is supplied with an air flow as a second heat medium supplied by the fan 30. This air flow is heated to about 30 ° C. by the first heat medium of about 70 ° C. in the condenser 26. The heated air flow partially heats a desiccant rotor 50 as a desiccant part, which will be described later, and then is supplied as a heat source to a heat absorber 32 as a heat absorption unit of a heat pump unit.

The heat absorber 32 is supplied with a first heat medium at about 10 ° C. which is adiabatically expanded by the second expansion valve 34 and further cooled by the first heat medium radiated by the heater 14. Therefore, in the heat absorber 32, the first heat medium can absorb heat from the air flow based on the temperature difference between the air flow that has passed through the condenser 26 and the desiccant rotor 50 and the first heat medium cooled to about 10 ° C. . The second expansion valve 34 may be a manual expansion valve or a capillary tube.
The first heat medium heated by absorbing heat from the air flow at the heat absorber 32 is supplied to the compressor 18 via the accumulator 36. The accumulator 36 is also supplied with a first heat medium that absorbs heat from the air flow supplied to the cooler 16 and sucked into the space unit 10. Since the accumulator 36 is a type of accumulator that can store the liquid component and re-supply only the gas component to the compressor 18, it can reliably supply only the gas component of the first heat medium to the compressor 18.
As this accumulator 36, an accumulator type accumulator can be used.
Even if the accumulator 36 is not installed, a heat medium that has been heated by absorbing heat from the air flow by the heat absorber 32 and a heat medium that has absorbed heat from the gas supplied to the cooler 16 and sucked into the space unit 10. And can be re-supplied to the compressor 18.

In the dehumidifying device with a temperature adjustment function shown in FIG. 1, the two-way valves 20 a and 20 b that distribute the high-temperature first heat medium discharged from the compressor 18 to the heating channel side and the cooling channel side are the temperature control unit 22. Is controlled by.
As shown in FIG. 2, the temperature control unit 22 uses the measured temperature measured by the temperature sensor 24 that measures the temperature of the dehumidified air discharged from the fan 12 and the set set temperature as a temperature arrival determination unit 22a. Compare with.
This set temperature is a temperature that takes into account the heat generated by the moisture absorption of the desiccant rotor 50 used in the desiccant rotor 50, and the air temperature supplied to the desiccant rotor 50 is the moisture absorption of the hygroscopic agent contained in the desiccant rotor 50. This is the temperature at which the performance can be exhibited most.
When the measured temperature is different from the set temperature, the heat medium distribution control unit 22b that has received information from the temperature arrival determination unit 22a receives the information from the temperature arrival determination unit 22a so that the measured temperature matches the set temperature. Each opening is changed continuously in practice.
By changing the respective opening degrees of the two-way valves 20a and 20b, the distribution ratio of the high-temperature first heat medium distributed to the heating flow path side and the cooling flow path side is changed substantially continuously. The sucked air can be adjusted to a predetermined temperature at which the moisture absorption performance of the moisture absorbent contained in the desiccant rotor 50 can be exhibited most.
In each of the two-way valves 20a and 20b, the relationship between the valve opening and the flow rate is not linear as shown in FIG. For this reason, the heat medium distribution control unit 22b of the temperature control unit 22 holds the flow rate characteristic data for each of the two-way valves 20a and 20b shown in FIG. Therefore, the opening signal to each two-way valve 20a, 20b is transmitted from the heat medium distribution control part 22b based on each flow rate characteristic of the two-way valve 20a, 20b.

Here, “substantially continuously change” means that the opening degree of the two-way valves 20a and 20b is adjusted by step control and the high temperature first heat medium is distributed to the heating flow path and the cooling flow path. In addition, although the opening degree of the two-way valves 20a and 20b is microscopically changed in a stepwise manner, the distribution ratio of the high-temperature first heat medium to the heating flow path and the cooling flow path as a whole is continuous. It means to include the case where it is changed.
The set temperature set in the temperature control unit 22 may be arbitrarily set. Further, although the temperature sensor 24 shown in FIG. 1 is installed on the discharge side of the fan 12, it may be installed on the suction side of the fan 12, or may be provided on the discharge side and suction side of the fan 12.

In the dehumidifying apparatus with a temperature adjustment function shown in FIG. 1, dehumidification of the air to be dehumidified is also performed by the coolers 16 and 16, but moisture in the air flow that has passed through the coolers 16 and 16 and the heater 14 is removed. This is mainly performed by a desiccant rotor 50 containing a moisture absorbent to be adsorbed.
As shown in FIG. 4A, the desiccant rotor 50 is a cylindrical body in which a honeycomb structure is provided. A hygroscopic agent is supported on the honeycomb structure. Such a hygroscopic agent can be regenerated into an unadsorbed state having a moisture adsorbing ability by desorbing the adsorbed moisture by heating, even in an adsorbing state in which moisture is adsorbed and the moisture adsorbing ability almost disappears. By using a polymer hygroscopic agent, high silica zeolite, or the like as the hygroscopic agent, the regeneration temperature of the hygroscopic agent can be set to about 40 to 80 ° C. As this high silica zeolite, those having a silica / alumina ratio of 30 or more are suitable.
As shown in FIG. 4A, the desiccant rotor 50 is provided so as to be rotatable in the arrow direction around an insertion hole 51 into which the rotation shaft is inserted. For this reason, as shown in FIG. 4B, the desiccant rotor 50 is brought into contact with the air flow adjusted in temperature through the coolers 16 and 16 and the heater 14, and adsorbs moisture in the air flow. The portion corresponding to the adsorbing part 50a and the position between the condenser 26 and the heat absorber 32, which is in contact with the air flow heated by the condenser 26, desorbs moisture from the moisture absorbent that has adsorbed water. And a portion corresponding to the detachable portion 50b to be reproduced.

The desiccant rotor 50 shown in FIG. 4A is rotated in the direction of the arrow about the insertion hole 51 by a motor 52 as drive means, as shown in FIG. For this reason, the part corresponding to the adsorbing part 50a of the desiccant rotor 50 and the part corresponding to the detaching part 50b are point-symmetrical with respect to the insertion hole 51 as shown in FIG.
Accordingly, the hygroscopic agent contained in the portion located in the adsorbing portion 50a of the desiccant rotor 50 shown in FIG. 4A passes through the coolers 16 and 16 and the heater 14 and is temperature-adjusted air. The moisture in the stream is adsorbed and becomes an adsorbed state. At this time, the hygroscopic agent generates heat.
Next, the portion in the adsorbed state containing the moisture absorbent that has adsorbed moisture has rotated 180 ° to reach the position of the desorbing portion 50b, and has contacted the air flow heated by the condenser 26 to adsorb the moisture. The hygroscopic agent is regenerated into a hygroscopic agent having moisture adsorption ability. At this time, the hygroscopic agent absorbs heat.
In this way, the regenerated non-adsorbed portion having the ability to adsorb moisture again rotates 180 ° and reaches the position of the adsorbing portion 50a.

A desiccant rotor 50 having a desiccant rotor 50 shown in FIG. 4 (a) containing high silica zeolite as a hygroscopic agent is used to adjust the temperature and humidity at a temperature of 25 ° C. and a humidity of 70%. The temperature and humidity were adjusted so that the air flow was a temperature of 25 ° C. supplied to the USER and a humidity of 19% or less.
FIG. 5 shows the air flow to be adjusted for temperature and humidity, the temperature of the air flow supplied to the desiccant rotor 50, and the like during the temperature and humidity adjustment.
First, the air to be adjusted in temperature and humidity is sucked into the space unit 10 by the fan 12, and the air flow is passed through the coolers 16 and 16 and the heater 14 to be cooled to 9 ° C. This is because the moisture absorption performance of the desiccant rotor 50 can be maximized. Furthermore, it is for reducing the absolute humidity in the air to be dehumidified and further improving the hygroscopicity in the desiccant rotor 50.
Subsequently, the air flow cooled to 9 ° C. is passed through the portion of the desiccant rotor 50 located in the adsorption portion 50a, and the moisture in the air flow is adsorbed by the hygroscopic agent. Heat generated by the moisture absorption by the moisture absorbent is added to heat transferred from the desorption part 50b or the like, and the air flow discharged from the space unit 10 is at the temperature when sucked into the space unit 10. The temperature is raised to a certain 25 ° C., and the humidity is adjusted to 19% or less.
The reason why the air flow that has passed through the adsorbing portion 50a of the desiccant rotor 50 can be directly supplied to the USER in this manner is because high-silica zeolite, which is a low-temperature regenerative type moisture absorbent, is used.
Here, when the temperature of the air flow discharged from the space unit 10 is different from the target temperature of 25 ° C., the temperature control unit 22 sends the two-way valves 20a and 20b to the two-way valves 20a and 20b based on the signal from the temperature sensor -24. On the other hand, a signal for changing the distribution ratio of the high-temperature first heat medium distributed to the heating flow path and the cooling flow path is transmitted to adjust the temperature and humidity. For this reason, the adjustment variation of the temperature and humidity of the air flow discharged from the space unit 10 was a temperature of ± 0.1 ° C. and a humidity of ± 1%.

Subsequently, the adsorbed portion of the desiccant rotor 50 in contact with the air flow to be dehumidified reaches the desorption part 50 b as the desiccant rotor 50 rotates. In the desorption part 50 b, the moisture absorbent that has adsorbed moisture comes into contact with the air flow that has passed through the condenser 26 by the fan 30.
An air flow having a temperature of 25 ° C. and a humidity of 70% is blown to the condenser 26 by the fan 30 separately from the air flow to be adjusted for the greenhouse degree supplied to the coolers 16 and 16 and the heater 14. As shown in FIG. 5, the air flow passing through the condenser 26 is heated to a temperature of 40 ° C. and a humidity of 17.9%. In the dehumidifying device with a temperature adjustment function shown in FIG. 1, most of the high temperature first heat medium discharged from the compressor 18 is distributed to the cooling flow path side, and a large amount of the high temperature first heat medium is supplied to the condenser 26. It is because it is supplied.
Since the adsorbent of the desiccant rotor 50 uses high-silica zeolite, which is a low-temperature regenerative type hygroscopic agent, the adsorbed hygroscopic agent is heated in contact with an air stream heated to 40 ° C. Thus, moisture is desorbed and regenerated into a moisture absorbent having moisture adsorption ability. The non-adsorbed portion of the desiccant rotor 50 containing the regenerated moisture absorbing agent having moisture adsorption capacity sequentially moves to the adsorbing portion 50 a as the desiccant rotor 50 rotates.
On the other hand, the air flow that has come into contact with the adsorbent moisture absorbent of the desiccant rotor 50 passes through the heat absorber 32 of the heat pump means, and passes through the heater 14 and the second expansion valve 34 to absorb heat into the cooled first heat medium. Is done. For this reason, in the heat absorber 32, the first heat medium can be sufficiently evaporated, and the liquid back phenomenon in which the liquid first heat medium is supplied to the compressor 18 can be prevented.
As described above, according to the dehumidifying device with a temperature adjusting function shown in FIG. 1, the dehumidification of the air flow discharged from the space unit 10 can be adjusted by the single compressor 18, and the exhaust heat thereof is reduced by the desiccant roller 50. It is used to regenerate the adsorbed moisture absorbent. As a result, significant energy savings can be achieved as compared to the case where a plurality of refrigeration devices and heating devices are separately used for temperature control of the air flow and regeneration of the moisture absorbent in the adsorbed state.
In the dehumidifying device with a temperature adjustment function shown in FIG. 1, the distribution ratio of the high-temperature first heat medium distributed to the cooling flow path is reduced, and the temperature of the air flow passing through the condenser 26 is 40 ° C. or less. In order to compensate for the shortage of heat, the electric heater 60 may be provided.

In the dehumidifying device with a temperature adjustment function shown in FIG. 1, when the temperature of the air to be dehumidified or the set temperature of the temperature control unit 22 is changed, an excessive first heat medium flows into the coolers 16 and 16, and the cooler 16 and 16, the first heat medium cannot evaporate, and a liquid back phenomenon may occur, or the temperature of the outlet of the heat medium of the coolers 16 and 16 may decrease and a frost phenomenon may occur.
For this reason, in the dehumidifying apparatus with a temperature adjustment function shown in FIG. 6, an automatic expansion valve is employed as the first expansion valve 28 (hereinafter, sometimes referred to as the automatic expansion valve 28). Further, an inlet heat medium temperature sensor 44 is installed in the pipe between the automatic expansion valve 28 and the branch to the coolers 16 and 16, and a suction heat medium temperature sensor 46 is disposed on the suction side (inlet side) of the compressor 18. And a control unit 38 provided with a temperature control unit 22 and an expansion valve control unit 42 is provided.

In the expansion valve controller 42, as shown in FIG. 7, the cooler inlet heat medium temperature measured by the inlet heat medium temperature sensor 44 provided in the supply pipes to the coolers 16 and 16 is set to a predetermined temperature. It is judged by the inlet heat medium temperature judgment part 42a whether it is in the range.
Here, when the cooler inlet heat medium temperature is higher than the predetermined temperature range, a signal for decreasing the opening degree of the automatic expansion valve 28 from the opening degree adjusting part 42c based on the information from the inlet heat medium temperature determining part 42a. When the cooler inlet heat medium temperature is lower than the predetermined temperature range, a signal for increasing the opening of the automatic expansion valve 28 is transmitted from the opening adjusting unit 42c.
Further, in the expansion valve control unit 42, the compressor inlet heat medium temperature measured by the suction heat medium temperature sensor 46 provided on the blowing side of the compressor 18 and the inlet heat medium temperature sensor 44 in the superheat degree determination unit 42 b. The degree of superheat based on the temperature difference from the cooler inlet heat medium temperature measured by the above is calculated, and it is determined whether or not the temperature is within a predetermined superheat range set in advance.
Here, when the calculated superheat degree is higher than the predetermined superheat degree range, a signal for reducing the opening degree of the automatic expansion valve 28 is transmitted from the opening degree adjusting part 42c based on the information from the superheat degree determining part 42b. When the calculated superheat degree is lower than the predetermined superheat degree range, a signal for increasing the opening degree of the automatic expansion valve 28 is transmitted from the opening degree adjusting unit 42c.
Further, as shown in FIG. 6, an outlet heat medium temperature sensor 48 is provided on each outlet side of the coolers 16, 16 to measure the outlet heat medium temperature, and the outlet heat medium temperature has no risk of frost formation at 2 ° C. You may adjust the opening degree of the automatic expansion valve 28 so that it may become above.
In the dehumidifying device with a temperature adjusting function shown in FIG. 6, even when the temperature of the air to be dehumidified or the set temperature of the temperature control unit 22 is changed, the expansion valve control unit 42 controls the automatic expansion valve 28 to perform compression. While maintaining the stable operation of the machine 18, the influence of the air flow discharged from the fan 12 on the humidity can be minimized.
Here, since the temperature control unit 22 provided in the control unit 38 shown in FIG. 7 has already been described with reference to FIG. 2, detailed description of the temperature control unit 22 will be omitted.
Of the constituent members constituting the dehumidifying device with the temperature adjusting function shown in FIG. 6, the same members as those of the dehumidifying device with the temperature adjusting function shown in FIG. Detailed description will be omitted.

By the way, when a commonly used hygroscopic agent having a regeneration temperature of 80 to 120 ° C. is used as the hygroscopic agent of the desiccant rotor 50, the heat generation amount at the time of moisture absorption by the hygroscopic agent and the heat absorption amount at the time of moisture desorption are as described above. It is larger than high silica zeolite, which is a low temperature regenerative type moisture absorbent.
For this reason, as shown in FIG. 8, a cooler 70 is provided that adjusts the temperature of the air flow that has passed through the adsorption portion 50 a of the desiccant rotor 50 to a target temperature. The cooler 70 is driven by an external refrigerator 72.
Moreover, in the desorption part 50b of the desiccant rotor 50, the heating amount for sufficiently desorbing the moisture of the moisture absorbent is insufficient only by heating by the air flow that passes through the condenser 26 and is heated. Between 50b, the electric heater 60 is provided in order to supplement the insufficient heat quantity.
In this way, by using a desiccant rotor 50 containing a hygroscopic agent having a regeneration temperature of 80 to 120 ° C., a dehumidifier with a temperature adjusting function provided with a cooler 70 and an electric heater 60, a temperature of 25 ° C. and a humidity of 70%. The air flow to be dehumidified was adjusted so that the air flow supplied to the USER was 25 ° C. and the humidity was 19% or less. FIG. 9 shows the air flow to be dehumidified and the temperature of the air flow supplied to the desiccant rotor 50 during the dehumidification.
First, while the air to be dehumidified is sucked into the space unit 10 by the fan 12, the air flow is passed through the coolers 16 and 16 and the heater 14 to be cooled to 9 ° C. Subsequently, the moisture in the air flow is adsorbed by passing through the adsorbing portion 50a of the desiccant rotor 50. During the adsorption, the hygroscopic agent generates heat, and the air flow that has passed through the adsorption portion 50a of the desiccant rotor 50 is heated to 34 ° C.
Therefore, by cooling the temperature of the air flow to 25 ° C. by the cooler 70, an air flow having a temperature of 25 ° C. and a humidity of 19% or less can be supplied to the USER.

In the desorption part 50b of the desiccant rotor 50, as shown in FIG. 9, the air flow passed through the condenser 26 and the electric heater 60 by the fan 30 and heated to 80 to 120 ° C., which is the desorption temperature of moisture of the moisture absorbent. And the moisture absorbent that has adsorbed moisture come into contact with each other, and moisture is desorbed from the moisture absorbent.
In this way, even if the cooler 70 and the electric heater 60 are provided, the exhaust heat from the condenser 26 is used to heat the desorption portion 50b of the desiccant rotor 50 and passes through the desorption portion 50b of the desiccant rotor 50. Since the heat of the air flow is used to heat the first heat medium by the heat absorber 32, it is compared with a dehumidifier with a temperature adjustment function that cools and heats the air flow only by the cooler 70 and the electric heater 60. Energy saving.
Of the constituent members constituting the dehumidifying device with temperature adjusting function shown in FIG. 8, the same members as those of the dehumidifying device with temperature adjusting function shown in FIG. Detailed description will be omitted.

As described above, the desiccant rotor 50 has been used in the dehumidifying device with the temperature adjusting function shown in FIGS. 1 to 9. However, the desiccant rotor 50 is used, and the plate-like desiccant part is used, and is located in the adsorption part 50 a every predetermined time. You may make it switch the part of an adsorption | suction state, and the part of the non-adsorption state located in the desorption part 50b.
Further, the desiccant part containing the hygroscopic agent in which the dehumidifying agent adsorbs a predetermined amount of water may be replaced with a desiccant part containing a hygroscopic agent capable of adsorbing water.
Furthermore, although the two-way valves 20a and 20b are used as the distributing means in the dehumidifying device with the temperature adjustment function shown in FIGS. 1, 6, and 8, a proportional three-way valve may be used.

DESCRIPTION OF SYMBOLS 10 Space unit 14 Heater 16 Cooler 18 Compressor 20a, 20b Two-way valve 22 Temperature control part 24 Temperature sensor 26 Condenser 28 1st expansion valve (automatic expansion valve)
30 Fan 32 Heat absorber 34 Second expansion valve 36 Accumulator 42 Expansion valve control unit 50 Desiccant rotor 50a Adsorption unit 50b Desorption unit 52 Motor

Claims (6)

A heating flow path in which a part of the high-temperature first heat medium compressed and heated by the compressor is supplied to the heating means;
A cooling flow path in which the remaining portion of the high-temperature first heat medium is cooled by the condensing means and then adiabatically expanded by the first expansion means and further cooled and supplied to the cooling means;
A portion of the high temperature first heat medium discharged from the compressor is distributed to the heating flow path side, and the remaining portion of the high temperature first heat medium is distributed to the cooling flow path side, and the heating flow and cooling are distributed. A distribution means capable of changing a distribution ratio of the high-temperature first heat medium distributed to the flow path;
In order to improve the heating capacity of the heating flow path, the first heat medium that is cooled by releasing heat by the heating means and then adiabatically expanded by the second expansion means and further cooled is an external heat source. Heat pump means comprising heat absorption means for absorbing heat from a certain second heat medium;
A desiccant part containing a hygroscopic agent that adsorbs moisture in the gas that has passed through the heating means and the cooling means,
A dehumidifying device with a temperature adjusting function in which the first heat medium that has passed through each of the heating channel, the cooling channel, and the heat pump means is re-supplied to the compressor,
The distribution means is controlled to adjust the distribution ratio of the high-temperature first heat medium distributed to the heating flow path and the cooling flow path, so that the gas passing through the heating flow path, the cooling flow path, and the desiccant portion A dehumidifying device with a temperature adjusting function, characterized in that a temperature control unit for controlling the temperature to a predetermined temperature is provided.   The cooling medium that cools the remaining portion of the high-temperature first heat medium that passes through the condenser that constitutes the condensing means is an air flow, and the moisture absorbent contained in the desiccant part passes through the condenser and rises. The dehumidifying device with a temperature adjusting function according to claim 1, wherein the dehumidifying device is a hygroscopic agent from which adsorbed moisture is desorbed by heating with the heated air flow.   The desiccant part is a desiccant part in which a part in an unadsorbed state containing a moisture absorbent capable of adsorbing moisture and a part in an adsorbed state containing a moisture absorbent that has adsorbed moisture coexist. 3. A desorption part is provided in which the water is desorbed from the hygroscopic agent that has adsorbed the water and regenerated into a non-adsorbed state containing the hygroscopic agent having the ability to adsorb moisture. Dehumidifier with temperature adjustment function as described.   The cooling medium that cools the remaining portion of the high-temperature first heat medium that passes through the condenser that constitutes the condensing means is an air flow, and the desorption part that heats the moisture absorbent that has adsorbed moisture and desorbs the moisture is The dehumidifying device with a temperature adjusting function according to any one of claims 1 to 3, wherein the dehumidifying device is provided at a position where an air flow heated through the condenser is sprayed.   The desiccant part is a desiccant rotor, and the desiccant rotor is moved so that the part in the adsorbed state of the desiccant rotor containing the moisture absorbent that has adsorbed moisture moves to the position of the desorption part that desorbs moisture from the moisture absorbent. The dehumidifying device with a temperature adjusting function according to any one of claims 1 to 4, wherein a driving unit for rotational driving is provided.   An automatic expansion valve is used as the first expansion means, and the expansion valve control section controls the opening degree of the automatic expansion valve so that the temperature of the heat medium supplied to the cooling means and the degree of superheat of the compressor are within a predetermined range. The dehumidifying device with a temperature adjusting function according to any one of claims 1 to 5.

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