JP2010266191A - Medium temperature regulating system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a medium temperature regulating system, capable of regulating a temperature of a medium relating to a factory, in a state of very high energy efficiency, by improving the efficiency of an air-cooled heat pump by effectively utilizing exhaust heat, and the like, in the factory. <P>SOLUTION: The medium temperature regulating system 1 includes the air-cooled heat pump 4 that heats the warm water for heating a degreasing liquid used in the paint factory F, and the air-cooled heat pump 4 is disposed so that the heat (hot air H of a drying furnace D) from the drying furnace D, belonging to the paint factory F, is applied to an air heat exchanger of the air-cooled heat pump 4. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to heating of a pretreatment liquid in a pretreatment electrodeposition coating process, heating of a cleaning liquid in a cleaning process, heating of air in a factory (such as air conditioning and drying), and heating of water for steam generation. The present invention relates to a medium temperature adjustment system used for the above.

As a specific example of medium temperature adjustment in a factory, let us consider liquid temperature adjustment of processing water. Conventionally, in the processing water heating, since the processing water is heated by energy obtained by burning fossil fuel such as city gas, LPG, heavy oil, kerosene, etc., carbon dioxide (CO ₂ ) emissions and Energy consumption was relatively high.

  Then, the liquid temperature adjustment apparatus using a heat pump as described in the following patent documents 1 and 2 was proposed in heating of processing water. In this liquid temperature adjusting device, the processing water is efficiently heated by a heat pump.

JP 2008-30169 A JP 2005-199119 A

  However, in this apparatus, since each liquid is merely heated by a heat pump, there is a limit to the degree of improvement in energy efficiency. In addition, when the heat pump in such an apparatus is actually installed outdoors, there are aspects in which the merit is reduced because the heating capacity and efficiency are affected by the outside air temperature.

  Therefore, the inventions according to claims 1 to 3 and 11 improve the efficiency of the air-cooled heat pump by effectively using the exhaust heat in the factory, thereby adjusting the medium temperature related to the factory in an extremely energy efficient state. The object is to provide a possible medium temperature regulation system.

  In order to achieve the above object, the invention described in claim 1 is provided with an air cooling heat pump for heating a heating medium for heating a medium used in a factory, and the air heat exchanger of the air cooling heat pump includes a factory. The air-cooled heat pump is arranged so that heat from a heat source belonging to is applied.

  In order to achieve the above object, the invention according to claim 2 is directed to an air cooling heat pump for heating a heating medium for heating a medium used in a factory, and heat from a heat source belonging to the factory. It has a heat guide means which leads to an air heat exchanger.

  In order to achieve the above object, according to the third aspect of the present invention, the heat from the heat source belonging to the factory is the heated hot water belonging to the factory and / or the heated air generated from the discharged hot water belonging to the factory. It is characterized by.

  In addition to the above object, the invention described in claim 4 is the above invention, in order to achieve the object of continuing the heating of the medium in an efficient factory by an air cooling heat pump in summer or the like. It is characterized by comprising cold air guiding means for introducing cold air to the air heat exchanger of the heat pump.

  In addition to the above object, the invention according to claim 5 achieves the object of improving the efficiency regardless of the season, etc., and in the above invention, the air cooling heat pump is capable of heating operation and cooling operation. In the heating operation, cold air is applied to the air heat exchanger by the cold air guiding means, and in the cooling operation, the heat is applied to the air heat exchanger.

  In addition to the above-mentioned object, the invention described in claim 6 is the above-mentioned invention, in order to achieve the object of improving efficiency by using heat that is generally present in factories but is not effectively utilized. Is the air in the upper part of the factory.

  In addition to the above object, the invention described in claim 7 is the above invention, in order to achieve the object of continuing the heating of the medium in an efficient factory by an air-cooled heat pump in summer and the like. It is provided with a cooling means capable of cooling.

  In addition to the above-mentioned object, the invention described in claim 8 is directed to the above-described invention in order to achieve the object of further efficiently heating the medium in the factory by cleaning the air heat exchanger of the air-cooled heat pump. The cooling means is an automatic watering device that sprays water on the air heat exchanger of the air-cooled heat pump.

  In addition to the above-mentioned object, the invention according to claims 9 and 10 has the above-mentioned object, and in the above-mentioned invention, the automatic watering device periodically performs the watering in order to achieve the object of preventing clogging or death. The automatic watering device performs the watering in order to cool the air that hits the air heat exchanger during the heating operation of the air-cooled heat pump.

  In order to achieve the above object, the invention according to claim 11 is a heat pump for heating a heating medium for heating a medium used in a factory, and depending on the temperature of the medium and / or the heating medium, A heat quantity adjusting means for adjusting the heat quantity of the heating medium for heating the medium is provided.

  In order to achieve the object of simply adjusting the amount of heat in addition to the above object, the invention described in claims 12 and 13 is the above invention, wherein the heat amount adjusting means is configured to control the flow rate of the heating medium by inverter control. A flow rate adjusting means for adjusting the flow rate, or a flow rate for adjusting the flow rate of the heating medium used for heating the medium by adjusting the branch flow rate of the heating medium that is returned without being used for heating the medium. It is an adjustment means.

  In order to achieve the object of simply adjusting the amount of heat in addition to the above object, the invention described in claim 14 is the above invention, wherein the medium is a supply medium, and the supply medium is heated. The pipe supplied to the supply target is provided with a branch pipe for supplying the supply medium to the supply target without heating, and the heat amount adjusting means adjusts the flow rate of the heating medium to the branch pipe. It is an adjustment means.

  In addition to the above-mentioned object, the invention described in claim 15 is compatible with various scales and set temperatures, and in order to achieve the object of further improving the efficiency while allowing the operation to continue, A plurality of the heat pumps are provided, the plurality of heat pumps are divided into a plurality of groups having different temperature settings, and the heat amount adjusting means switches the operation state for each group. The heat quantity of the heating medium is adjusted by the above.

  In addition to the above object, the inventions of claims 16 and 17 achieve the object of operating well at low cost. In the above invention, the heat pump is an air-cooled heat pump or a heat pump water heater. It is characterized by being.

  According to the present invention, heat (warm air or the like) related to a factory is applied to an air heat exchanger of an air-cooled heat pump that heats a medium used in the factory. Therefore, compared with the case where no heat is applied to the air heat exchanger, the operation efficiency related to the heating of the air-cooled heat pump can be improved, and the heat that has been discarded in the past can be effectively used, and the air-cooled heat pump is extremely efficient. There is an effect that it is possible to ensure the operation.

(A) is a block diagram of the medium temperature adjustment system which concerns on the 1st form of this invention, (b) is a block diagram of the medium temperature adjustment system which concerns on a comparative example. It is a block diagram of the medium temperature control system which concerns on the 2nd form of this invention. It is a flowchart which shows operation | movement of the medium temperature control system of FIG. It is a block diagram of the medium temperature control system which concerns on the 3rd form of this invention. It is a block diagram of the medium temperature control system which concerns on the 4th form of this invention. It is a flowchart which shows operation | movement of the medium temperature control system of FIG. It is a block diagram of the medium temperature control system which concerns on the 5th form of this invention. It is a block diagram of the medium temperature control system which concerns on the 6th form of this invention. It is a block diagram of the medium temperature control system which concerns on the 7th form of this invention. It is a block diagram of the medium temperature control system which concerns on the 8th form of this invention. It is a table | surface which shows the energy usage-amount etc. of the conventional system as a medium temperature control system of FIG. 10, or an outdoor installation system as a comparative example. It is a block diagram of the medium temperature control system which concerns on the 9th form of this invention. 13 is a table showing the energy usage amount of the medium temperature adjustment system of FIG. 12 and a conventional method or an outdoor installation method as a comparative example. It is a block diagram of the medium temperature control system which concerns on the 10th form of this invention. It is a block diagram of the medium temperature control system which concerns on the 11th form of this invention. It is a block diagram of the medium temperature control system which concerns on the 12th form of this invention. It is a block diagram of the medium temperature control system which concerns on the 13th form of this invention. It is a block diagram of the medium temperature control system which concerns on the 14th form of this invention. It is a flowchart which shows operation | movement of the medium temperature control system of FIG. It is a block diagram in (a) winter season, (b) summer season, etc. of the medium temperature control system which concerns on 15th form of this invention. It is a block diagram of the medium temperature control system which concerns on the 16th form of this invention. It is a block diagram of the medium temperature control system which concerns on the 17th form of this invention. It is a block diagram of the medium temperature control system which concerns on the 18th form of this invention. It is a block diagram of the medium temperature control system which concerns on the 19th form of this invention. It is a block diagram of the medium temperature control system which concerns on the 20th form of this invention. It is a block diagram of the medium temperature control system which concerns on the 21st form of this invention.

  Hereinafter, an example of an embodiment according to the present invention will be described with reference to the drawings as appropriate. In addition, the said form is not limited to the following example.

[First form]
FIG. 1A is a schematic diagram of a medium temperature adjustment system 1 according to the first embodiment. The medium temperature adjustment system 1 is a medium (liquid, pretreatment liquid) for degreasing an object before coating. ) As a tank (pretreatment tank) containing a degreasing liquid, and an air-cooled heat pump 4 for heating the degreasing liquid in the degreasing tank 2. Targets include automobiles (body parts), construction engineering machinery, special vehicles, steel furniture, steel fittings, vending machines, heavy electrical equipment, agricultural machinery, prefabricated steel frames, hard disk drives, manhole covers, An air conditioner, or these parts are mentioned. Examples of the pretreatment tank include a degreasing tank, a hot water washing tank, a preliminary degreasing tank, a chemical conversion tank for forming a base film, and the like, or a combination thereof.

  The air cooling heat pump 4 is connected to a supply pipe 12 for supplying hot water as a heating medium to the degreasing tank 2 for heating the degreasing liquid used in the coating factory F, and the hot water is air-cooled from the degreasing tank 2. A return pipe 14 returning to the heat pump 4 is connected. Each pipe may be provided with a heat amount adjusting means such as a heat exchanger and tank (not shown), a flow rate adjusting valve for hot water, and a temperature sensor related to hot water for adjusting the heat amount, and control the heat amount adjustment. Automatic control means may be provided. Further, the pipe arrangement may be changed as appropriate, for example, by branching the pipe. Furthermore, the air-cooling heat pump 4 may directly heat the hot water, or heats an internal medium (refrigerant) disposed in itself, and heat exchange is performed between the internal medium and the hot water. Heating may be performed. Alternatively, the internal medium may be a heating medium, and a medium used in a factory may be introduced into the air-cooling heat pump 4 and heated. In addition, a heating medium other than warm water may be employed.

  The medium temperature adjustment system 1 is installed in the painting factory F. Also, in the painting factory F, a drying furnace D for a draining and drying process, which is a subsequent process of the degreasing process for immersing the object in the degreasing tank 2, is arranged, and the drying furnace D as a heat source is provided in the painting factory F. belong to. Further, the drying furnace D or the air-cooled heat pump 4 is arranged so that the warm air H (exhaust with heat, heat release) of the drying furnace D hits an air heat exchanger (not shown) of the air-cooled heat pump 4. As a heat source, a drying furnace D, a baking furnace related to the baking process, a compressor related to the painting factory F, a transformer (electric room) or a boiler, or a combination thereof can be used.

  On the other hand, FIG. 1B shows a comparative example in which an air-cooled heat pump is arranged outside the coating factory F, unlike the medium temperature adjustment system 1, and outside air is applied to the air heat exchanger of the air-cooled heat pump. In the comparative example, a circuit for additionally heating the degreasing tank 2 with steam supplied from a boiler (not shown) is installed in preparation for a situation where the heating load cannot be followed only by heating with an air-cooled heat pump. ing. In general, in the case of an air-cooled heat pump, when the temperature of the outside air in the air heat exchanger is low, the efficiency of warming hot water deteriorates and the heating capacity decreases, and when the hot water supply temperature increases, the efficiency further deteriorates and the heating capacity decreases. .

  Such a medium temperature adjustment system 1 operates as described below.

  For example, in the medium temperature adjustment system 1 of FIG. 1A, the heating load for keeping the degreasing liquid in the degreasing tank 2 at 60 degrees Celsius (hereinafter the same) is 73 kW (kilowatts), and the painting factory F The inside is assumed to be 25 degrees due to indoor installation of the drying furnace D (120 degrees). In this case, it is necessary to supply hot water 73 kW (70 degrees) from the air-cooled heat pump 4, but since the air heat exchanger of the air-cooled heat pump 4 is heated by 25 degrees warm air H (warm air H is sucked), The COP (Coefficient of Performance) of the air-cooled heat pump 4 is 2.7, and the input of electricity V to the air-cooled heat pump 4 is 27 kW. Note that the variation in the heating load is dealt with by changing the operating state of the air-cooled heat pump 4 or changing the amount of heat of hot water by the heat amount adjusting means.

  On the other hand, in the comparative example of FIG. 1B, when heating is performed in the same manner as described above, if the air heat exchanger of the air-cooled heat pump is exposed to 5 degrees of outside air, the COP of the air-cooled heat pump becomes 2.1, and the electric input Since only hot water 49 kW can be supplied at 23 kW, additional heating is performed with steam 24 kW, which corresponds to the heating load of the degreasing tank 2.

  The above-described medium temperature adjustment system 1 includes an air-cooling heat pump 4 that heats warm water used to heat the degreasing liquid used in the coating factory F. A drying furnace belonging to the painting factory F is included in the air heat exchanger of the air-cooling heat pump 4. The air-cooled heat pump 4 is arranged so that heat from D (warm air H of the drying furnace D) is applied.

  Therefore, compared to the case where the air-cooled heat pump is installed outdoors as in the comparative example and the outside air is applied to the air heat exchanger, the COP of the air-cooled heat pump 4 is good and can be operated with a high heating capacity. A great amount of heating can be performed in a state where the input of electricity V is relatively small.

[Second form]
FIG. 2 is a schematic diagram of the medium temperature adjustment system 21 according to the second embodiment, and the medium temperature adjustment system 21 is the same with respect to the degreasing tank 2 and the drying furnace D including the first embodiment and modified examples.

  In the medium temperature adjustment system 21, the air cooling heat pump 4 is installed outside the painting factory F. The inside of the coating factory F is kept at about 25 degrees by the drying furnace D and the pretreatment process (degreasing / cleaning / chemical conversion) and the like, and includes warm air H (heat from a heat source) of 25 degrees warmer than 5 degrees outside air. Yes. The supply pipe 12 and the return pipe 14 pass through the wall of the painting factory F, and are connected to the external air-cooled heat pump 4 and the internal degreasing tank 2. The air conditioner or the like may be located outside the painting factory F.

  Between the painting factory F and the air cooling heat pump 4, a duct 22 through which the warm air H in the painting factory F passes and a factory ventilation fan 24 attached to the duct 22 are arranged. The duct 22 is installed from the wall on the air cooling heat pump 4 side of the painting factory F, and the factory ventilation fan 24 is installed on the air cooling heat pump 4 side of the duct 22. When the factory ventilation fan 24 is activated, the warm air H in the painting factory F is guided to the duct 22 and is discharged outside as the exhaust warm air B. The exhaust warm air B is applied to the air heat exchanger of the air cooling heat pump 4.

  The duct 22 or the factory ventilation fan 24 is provided with a heat amount control means for adjusting the heat amount of the warm air H (exhaust hot air B). As the heat amount control means, the factory ventilation fan 24 is inverter-controlled to change the air amount, etc., or the heat amount is changed, or the damper (not shown) is controlled to change the flow rate in the duct 22 to adjust the heat amount. And the one that adjusts the temperature of the warm air H by allowing the outside air to be partially sucked into the inlet of the factory ventilation fan 24 and mixing the warm air with the warm air (after adjusting the amount). It is executed by an automatic control device (not shown). The duct 22 and the factory ventilation fan 24, or these and the heat amount control means constitute the heat guide means.

  Such a medium temperature adjustment system 21 operates similarly to the first embodiment.

  That is, for example, when the outside air temperature is 5 degrees and the heating load is 73 kW, the factory ventilation fan 24 is operated, and the air heat exchanger of the air-cooled heat pump 4 is supplied with 25 degrees warm air H (exhaust warm air B) instead of 5 degrees outside air. The COP of the air cooling heat pump 4 is improved from 2.1 to 2.7, the heating capacity is improved from 49 kW to 73 kW, and the heating load can be followed.

  In addition, as shown in FIG. 3, the air intake temperature of the air heat exchanger of the air-cooled heat pump 4 is controlled to be, for example, 25 ° C. or more and 35 ° C. or less by a heat control means (automatic control device) or various temperature sensors (not shown). Is done.

  That is, the automatic control means monitors the start command of the air cooling heat pump 4 (step S1), and starts the operation of the air cooling heat pump 4 when the start command is ON (step S2). Further, if the outside air temperature is not less than 25 degrees (NO in step S3), the automatic control means stops the factory ventilation fan 24 (step S4) and monitors the stop command for the air cooling heat pump 4 (step S5). If the stop command is ON, the operation of the factory ventilation fan 24 is stopped and the process is terminated (step S6). On the other hand, if the stop command is not ON, the processing from step S3 is repeated.

  When the outside air temperature is less than 25 degrees (YES in step S3), the automatic control means determines whether the suction temperature in the factory ventilation fan 24 is higher than the outside air temperature by more than 5 degrees (step S7), and step If YES in S7, the operation of the factory ventilation fan 24 is started (step S8), and whether or not the air suction temperature (temperature of the exhaust air B) of the air heat exchanger of the air-cooling heat pump 4 is 25 degrees or less. Is confirmed (step S9). On the other hand, if the suction temperature of the factory ventilation fan 24 is not higher than the outside air temperature by more than 5 degrees (NO in step S7), the automatic control means executes the processing from step S4 described above.

  When the air suction temperature of the air-cooled heat pump 4 is 25 degrees or less (YES in step S9), the automatic control means turns the factory ventilation fan 24 into an inverter until the air suction temperature reaches 30 degrees or more (steps S10 and S12). Thus, the air volume is gradually increased (step S11), and the process proceeds to step S5.

  On the other hand, if the air suction temperature of the air-cooled heat pump 4 is not 25 degrees or less (NO in step S9), the automatic control means determines whether the temperature is 35 degrees or more (step S13). When the temperature is not 35 degrees or higher (NO in step S13), the automatic control unit proceeds to step S5.

  On the other hand, when the air suction temperature of the air-cooled heat pump 4 is 35 ° C. or higher (YES in step S13), the automatic controller means the factory ventilation fan 24 until the air suction temperature becomes 35 ° C. or lower (steps S14 and S16). The air volume is gradually reduced by the inverter (step S15), and the process proceeds to the above step S5.

  Such a medium temperature adjustment system 21 includes heat from the air-cooled heat pump 4 that warms the hot water that heats the degreasing liquid used in the coating factory F, and the heat from the drying furnace D and the pretreatment process belonging to the coating factory F, A duct 22 leading to an air heat exchanger of the air cooling heat pump 4 or a factory ventilation fan 24 is provided.

  Therefore, as in the first embodiment, the COP of the air-cooled heat pump 4 can be made good, and the operation can be performed with a high heating capacity, and an efficient operation can be performed with sufficient heating.

[Third embodiment]
FIG. 4 is a schematic diagram of the medium temperature adjustment system 31 according to the third embodiment. The medium temperature adjustment system 31 is the same as that of the first embodiment and the modified example except that an outside air guiding unit is added.

  That is, a duct 32 through which the outside air A passes is installed from the outside of the painting factory F to the front of the air heat exchanger of the air-cooled heat pump 4 inside, and the blower 34 is provided in the duct 32. The blower 34 is installed on the side of the air cooling heat pump 4 in the duct 32, and can be sucked by applying external air A (along with warm air H) to the air heat exchanger. Note that the air cooling heat pump 4 needs to have the air suction temperature in the air heat exchanger not more than a predetermined temperature (for example, 40 degrees) when supplying hot water (heating), and if it exceeds the predetermined temperature The refrigerant high pressure abnormality protection device of the air cooling heat pump 4 is activated, and the operation of the air cooling heat pump 4 is stopped. In the duct 32 or the blower 34, an outside air calorie adjusting means for adjusting the flow rate of the outside air A or the like can be installed.

  Such a medium temperature adjustment system 31 operates as described below.

  For example, the heating load for keeping the degreasing liquid in the degreasing tank 2 at 60 degrees is 73 kW, the inside of the coating factory F is 60 degrees by the indoor installation of the drying furnace D (120 degrees), and the warm air H is 50. Suppose it was a degree (summer, etc.). In this case, it is necessary to supply hot water 73 kW (70 degrees) from the air-cooled heat pump 4, but the air heat exchanger of the air-cooled heat pump 4 receives 50 degrees warm air H (50 degrees warm air H is sucked). ) Although the input of electricity V to the air-cooling heat pump 4 is 27 kW, the operation of the air-cooling heat pump 4 is stopped as it is. However, since the outside air A of 35 degrees is mixed with the warm air H by the duct 32 or the blower 34, the air suction temperature in the air heat exchanger becomes 40 degrees (predetermined temperature) or less, and the protection device of the air cooling heat pump 4 is activated. The occurrence of the situation is prevented.

  The outside air guiding means or the automatic control device connected thereto monitors the air suction temperature (the temperature of the warm air H) of the air-cooled heat pump 4 with a temperature sensor or the like (not shown), and the temperature is a predetermined temperature at which the protection device operates. When the temperature is less than a specific temperature (for example, 35 degrees) or more, the blower 34 can be activated to introduce the outside air A, and when the temperature is less than the specific temperature or a constant temperature lower than the specific temperature (for example, 30 degrees), It is possible to stop the blower 34 and stop the introduction of the outside air A. Note that the automatic control device can start and stop the outside air guiding means based on the refrigerant pressure of the air-cooled heat pump 4 instead of or together with the air suction temperature of the air-cooled heat pump 4. The blower 34 may control the air volume by an inverter. Further, for the purpose of omitting the duct 32, the blower 24 may be installed on the side of the factory, and the air-cooled heat pump 4 may be arranged so that the outside air sent from the blower 24 is sucked into the air heat exchanger of the air-cooled heat pump 4.

  The medium temperature adjustment system 31 of the above third embodiment is the same as that of the first embodiment, and in particular, the outside air guiding means (cold air guide) for guiding the outside air A (cold air) (according to the warm air H) to the air heat exchanger of the air cooling heat pump 4. Means).

  Therefore, the same effect as that of the medium temperature adjustment system 31 of the first embodiment is obtained, and when the temperature of the warm air H is too high as the air suction temperature of the air-cooled heat pump 4, the warm air H is mixed with the outside air A (cold air). The situation where the protection device of the air cooling heat pump 4 is activated can be prevented, and the heating operation of the air cooling heat pump 4 can be continued (in an efficient state).

[Fourth form]
The medium temperature adjustment system 41 according to the fourth embodiment is the same as the third embodiment and the modified example, in addition to the addition of an indirect water spray cooling device as a cooling means instead of the outside air guiding means.

  That is, as shown in FIG. 5, an indirect water spray cooling device 42 that cools the gas by water spray is installed between the drying furnace D and the air cooling heat pump 4. Connected to the indirect sprinkler cooling device 42 is a water supply 46 having a sprinkler valve 44 as a regulator capable of adjusting the flow rate (heat quantity) of the water W, and a drain pit P for discharging the water W. Has been. The water supplier 46 supplies water W in a tank (not shown) or the like to the indirect sprinkler cooling device 42. Here, the indirect water spray cooling device 42 causes the water W from the water supply device 46 to flow down to the mat-shaped main body, and flows the warm air H from the drying furnace D through the main body. The cooling air C is cooled by the heat of vaporization of the water W or the like. The cooling air C that has cooled the warm air H is sucked at the air suction port of the air-cooling heat pump 4 and applied to the air heat exchanger. The watering valve 44 may be connected to an automatic control device (not shown).

  Such a medium temperature adjustment system 41 operates as described below, for example.

  That is, as shown in FIG. 6, when the activation command for the air cooling heat pump 4 is ON (YES in step S41), the automatic control device starts the operation of the air cooling heat pump 4 (step S42). Then, as an initial setting (NO in step S43), the automatic control device fully opens the watering valve 44 for a predetermined time (2 minutes) (steps S44 to S46), closes the watering valve 44, and proceeds to step S48. . This operation will be described in further detail. When the air-cooled heat pump 4 is installed in the factory, dust and oil are attached to the indirect water spray cooling device 42, and therefore, the indirect water spray cooling device 42 is clogged. This prevents performance degradation or capacity degradation due to the above. In addition, by periodically performing watering, generation of water is prevented and clogging of the indirect watering cooling device 42 due to rust or the like is prevented. In the fifth and seventh embodiments, which will be described later, a similar effect due to such an operation appears. That is, by directly spraying water directly on the air heat exchanger of the air-cooling heat pump 4, dust, oil, etc. adhering to the air heat exchanger are washed away, and performance degradation and performance degradation are prevented.

  In step S48, the automatic control device checks whether or not the air suction temperature in the air heat exchanger of the air-cooled heat pump 4 is equal to or higher than a specific temperature (38 degrees). If the air suction temperature is not equal to or higher than the specific temperature (NO in step S48), the automatic control device proceeds to step S53 described later.

  On the other hand, if the air suction temperature is equal to or higher than the specific temperature (YES in step S48), the automatic control device determines that the water suction valve 44 is used until the air suction temperature is equal to or lower than the specific temperature or a predetermined temperature lower than this (35 degrees in this case). Is fully opened (steps S49 to S51). Then, when the air suction temperature reaches a predetermined temperature or the like, the automatic control device closes the water spray valve 44 and proceeds to step S53.

  In step S53, the automatic control device monitors a stop command for the air-cooling heat pump 4. If the command is “ON”, the automatic control device ends the process. If not, the process continues from step S43.

  Since the medium temperature adjustment system 41 of the fourth embodiment described above has the indirect water spray cooling device 42 capable of cooling the warm air H from the drying furnace D led to the air heat exchanger of the air-cooling heat pump 4, as in the third embodiment, The warm air H can be cooled to a state where the protection device of the air-cooling heat pump 4 does not work, and heating of the degreasing tank 2 with good efficiency by the air-cooling heat pump 4 can be continued in summer and the like.

  In addition, since the cooling means related to the warm air H is the indirect water spray cooling device 42, it is possible to prevent the water W (refrigerant) for cooling from being scattered in the painting factory F, and to use the water W without waste. Can contribute to efficient cooling.

[Fifth embodiment]
FIG. 7 is a schematic diagram of the medium temperature adjustment system 51 according to the fifth embodiment, except that the medium temperature adjustment system 51 is configured such that the cooling means for cooling the warm air H from the drying furnace D is an automatic watering device 52. The fourth embodiment and the modification are the same.

  That is, the medium temperature adjustment system 51 includes an automatic watering device 52 that sprays water W to the air heat exchanger of the air-cooling heat pump 4. The automatic watering device 52 is connected to a water supply device 56 having a watering valve 54 as a regulator capable of adjusting the flow rate (heat amount) of the water W. The water supplier 46 supplies water W in a water pipe, industrial water pipe, watering tank, etc. (not shown) to the automatic watering device 52. Instead of or in addition to the heating of the degreasing liquid by the air cooling heat pump 4, heating for air conditioning, warming for generating hot air in the drying process, or a combination thereof can be performed.

  Such a medium temperature adjustment system 51 operates in the same manner as in the fourth embodiment. For example, when the air suction temperature in the air heat exchanger of the air-cooled heat pump 4 is equal to or higher than a specific temperature, the automatic watering device 52 performs the operation until the predetermined temperature is reached. By blowing water W on the air heat exchanger, the warm air H sucked in the air heat exchanger is cooled by vaporization heat, etc., and the automatic cooling of the air cooling heat pump 4 due to the operation of the protective device is avoided and the operation is continued. Is done.

  In the medium temperature adjustment system 51 of the fifth embodiment described above, as in the fourth embodiment, the air suction temperature of the air-cooling heat pump 4 is adjusted to continue the operation of the air-cooling heat pump 4, and the efficient degreasing tank 2 is heated. Can last. In addition, the air heat exchanger 4 of the air-cooled heat pump 4 can be sprayed with water W (medium) to remove dirt, etc., and the air heat exchanger 4 can be temporarily sprinkled in winter as well as in summer. The dust adhering to the heat exchanger can be washed, and the efficiency reduction and failure of the heat exchange in the air-cooled heat pump 4 can be prevented. In summer and the like, the air suction heat pump 4 can be lowered in air suction temperature and the air heat exchanger can be cleaned at the same time, and heating by the air cooling heat pump 4 can be performed very efficiently.

  In addition, there exists what is demonstrated below as a modification of a 5th form. That is, in the case of air conditioning that requires heating even in the middle season, a watering device is attached to the commercial packaged air conditioner (air-cooled heat pump 4). A general business packaged air conditioner (air-cooling heat pump 4 for air conditioning) becomes inoperable because a heat pump cycle is not realized if the outside air temperature (suction temperature of the air heat exchanger) exceeds a specified temperature (for example, 15 degrees). Therefore, in order to cool the intake air temperature of the air heat exchanger to a specified temperature or less so that the commercial packaged air conditioner can be operated, a watering device is attached and the suctioned air is cooled by watering. By installing such a watering device, it is possible to continue the operation of the commercial package air conditioner (air-cooled heat pump 4) even if the outside air temperature exceeds the specified temperature. For example, in air conditioning in a temperature-controlled room that is kept at a specific temperature such as 28 degrees throughout the year, heating is necessary even in the mid-season when the outside air temperature is 15 degrees or higher. Air conditioning is not possible (operation stops in the middle season). Therefore, the air temperature of the air heat exchanger is lowered by the watering device, and the intake air temperature is made 15 degrees or less (by adjusting the watering amount or cooling amount) even in the mid season when the outside air temperature is 15 degrees or more. As operation is possible, it becomes possible to continue air conditioning of the temperature-controlled room accurately and in consideration of cost.

[Sixth form]
FIG. 8 is a schematic diagram of the medium temperature adjustment system 61 according to the sixth embodiment. The medium temperature adjustment system 61 is configured by combining the second embodiment and the fourth embodiment.

  That is, the medium temperature adjustment system 61 includes the duct 22 and the factory ventilation fan 24 that guide the warm air H belonging to the painting factory F to the air heat exchanger of the air-cooling heat pump 4 as the exhaust air B, and the factory ventilation fan 24 and the air. Between the heat exchangers, an indirect water spray cooling device 42 capable of cooling the exhaust air B is provided.

  Such a medium temperature adjustment system 61 operates in the same manner as the second and fourth embodiments. In other words, the warm air H of the coating factory F is guided to the air heat exchanger of the air-cooled heat pump 4 as the exhaust air B, so that the air-cooled heat pump 4 can be operated efficiently and the air heat exchanger 4 is protected for the air heat exchanger. The indirect sprinkler cooling device 42 is activated when the exhaust air flow B is so hot that the device can operate, but the air flow adjustment is not successful due to the occurrence of a delay in the follow-up control of the inverter of the factory ventilation fan 24. Then, the exhaust warm air B is cooled to a temperature at which the protective device does not operate, and the operation of the air cooling heat pump 4 is continued.

[Seventh form]
FIG. 9 is a schematic diagram of the medium temperature adjustment system 71 according to the seventh embodiment, and the medium temperature adjustment system 61 is configured by combining the second embodiment and the fifth embodiment.

  That is, the medium temperature adjustment system 71 includes the duct 22 and the factory ventilation fan 24 that guide the warm air H belonging to the painting factory F to the air heat exchanger of the air-cooling heat pump 4 as exhaust air B, and the air heat of the air-cooling heat pump 4. An automatic watering device 52 for spraying water W to the exchange is provided.

  Such a medium temperature adjustment system 71 operates in the same manner as the second and fifth embodiments. In other words, the warm air H of the coating factory F is guided to the air heat exchanger of the air-cooled heat pump 4 as the exhaust air B, so that the air-cooled heat pump 4 can be operated efficiently and the air heat exchanger 4 is protected for the air heat exchanger. The automatic watering device 52 is activated when the exhaust air flow B is high enough to operate the device but the air flow adjustment is not successful due to the occurrence of a delay in the follow-up control of the inverter of the factory ventilation fan 24. Then, the exhaust air B is cooled to a temperature at which the protective device does not operate, and the operation of the air cooling heat pump 4 is continued. Moreover, in the medium temperature control system 61, the dust adhering to the air heat exchanger of the air-cooling heat pump 4 can be cleaned by operating the automatic watering device 52, and the efficiency of the air-cooling heat pump 4 is prevented from being reduced or broken. be able to.

[Eighth form]
FIG. 10 is a schematic diagram of the medium temperature adjustment system 81 according to the eighth embodiment. The medium temperature adjustment system 61 is arranged in the cleaning process in the parts factory F2, and the air-cooled heat pump 4 contains cleaning liquid for cleaning parts. Except for heating the washing tank 82, it is the same as the first embodiment.

  That is, in the medium temperature adjustment system 81, the warm air H from the drying furnace D belonging to the parts factory F2 is applied to the air heat exchanger of the air cooling heat pump 4, and the air cooling heat pump 4 supplies hot water via the supply pipe 12 and the return pipe 14. The washing tank 82 is heated by circulation.

  Such a medium temperature adjustment system 81 supplies, for example, hot water of 70 degrees from the air-cooled heat pump 4 to keep the cleaning liquid at 60 degrees, while the air-cooled heat pump 4 supplies 25 degrees of warm air H generated from the 120-degree drying furnace D. When the air heat exchanger is used, the operation shown in the column of “Eighth form” in the table of FIG. 11 is performed, and the operation is more efficient than the “conventional method” and “outdoor installation method” described later. Do.

That is, the heating load for maintaining the cleaning tank 82 at 60 degrees is 15 kW / hour (kW / h) in the summer (June to September), 30 kW / h in the middle (4, 5, October, November), winter (December to March) 60 kW / h. In addition, the method of heating the cleaning tank 82 only with a steam boiler that is heated with city gas is a conventional method, and the cleaning tank 82 is simply heated with the air-cooled heat pump 4 installed outdoors, and is heated with city gas when the heating capacity is insufficient. A method using a steam boiler for warming (a method corresponding to FIG. 1B) is an outdoor installation method. Furthermore, the heating capacity (heating capacity) and COP of the air cooling heat pump of the outdoor installation type and the air cooling heat pump 4 of the eighth embodiment are related to the high temperature hot water type heat pump water heater whose maximum hot water temperature is about 70 degrees. In addition, the efficiency of the steam boiler is assumed to be 85%, and the CO ₂ emission factor is calculated based on the enforcement order of the law on the promotion of global warming countermeasures and greenhouse gas emissions associated with the business activities of specified exhausters for city gas. Calculated values from "List of calculation methods / emission factors in calculation / report / publication system" created by the Ministry of the Environment on the basis of the ministerial ordinances concerning (11,000 kilocalories per cubic meter (kcal / Nm ³ ), 2.3300 kilograms (CO ₂ ) Using normal cubic meters (kg-CO ₂ / Nm ³ )) and using electricity, Chubu Electric Power Co., Ltd.'s 2008 actual values (860 kilocalories per kilowatt hour (kcal / kWh), 0.4550 kg-CO ₂ / kWh) are used. .

Then, within 1 hour in summer, the conventional method uses 1.4 Nm ³ city gas for steam boiler operation, and the outdoor installation method has an air suction temperature of 35 degrees C in the air heat exchanger of the air-cooled heat pump. Becomes 2.7 and consumes 5.6 kWh, and in the eighth embodiment, the air suction temperature is 35 degrees without introducing the warm air H into the air heat exchanger of the air-cooled heat pump 4, so that it is the same as the outdoor installation method.

Also, within 1 hour of the intermediate season, 2.8 Nm ³ city gas is used for steam boiler operation in the conventional system, and the air suction temperature in the air heat exchanger of the air cooling heat pump is 15 degrees in the outdoor installation system. COP becomes 2.4 and 12.5 kWh of power is consumed. In the eighth embodiment, warm air H is introduced into the air heat exchanger of the air-cooled heat pump 4 to raise the air suction temperature from 15 degrees to 25 degrees and COP becomes 2 .7, and the power consumption is 11.1 kWh.

In addition, within 1 hour in winter, the conventional method uses 5.5 Nm ³ city gas for steam boiler operation, and the outdoor installation method has an air intake temperature of 5 degrees in the air heat exchanger of the air-cooled heat pump. Therefore, the COP becomes 2.1 and consumes 23.3 kWh of power, and the air cooling heat pump alone cannot cover all the heating loads, so the steam boiler is operated and 1.0 Nm ³ city gas is used. In the embodiment, the warm air H is introduced into the air heat exchanger of the air-cooled heat pump 4 to raise the air suction temperature from 5 degrees to 15 degrees, the COP becomes 2.4, and the power consumption becomes 25.0 kWh. The air cooling heat pump 4 can cover all heating loads.

Furthermore, when the amount of energy used and CO ₂ emissions are calculated for each season in consideration of the operation time per day and the number of operation days for each season, in the summer the gas is 1788 Nm ³ · CO ₂ is 4.2 tons ( ton), the outdoor installation method and the eighth form are 7200 kWh · CO ₂ for 3.3 tons, the mid-season gas is 3664 Nm ³ · CO ₂ for 8.5 tons, and the outdoor installation method is 16600 kWh · CO ₂ 7.6 tons electricity 14756KWh · CO ₂ 6.7 tons eighth embodiment, the gas in a conventional manner in the winter 7064Nm ³ · CO ₂ 16.5 tons of gas outdoors installation means 1295 ³ -Electricity is 29867 kWh · CO ₂ is 16.6 tons of electricity and 3.0 tons of gas is combined, 16.6 tons, electricity is 32000 kWh · CO ₂ is 14. 6 tons.

When the annual energy consumption and CO ₂ emissions are calculated by summing up each season, the CO ₂ emissions are reduced by 6% in the outdoor installation method compared to 29.2 tons of the conventional method (27.4). ), Which is reduced by 16% in the eighth embodiment of the present invention (24.5 tons). In addition, the amount of energy used increases by 3% when compared to the conventional city gas 12516 Nm ³ (crude oil equivalent 14.9 kiloliters) and the crude oil equivalent amount (electricity 53667 kWh · gas 1295 Nm ³ · crude oil The total amount is 15.3 kiloliters in terms of conversion), which is reduced by 7% in the eighth mode (electricity: 53,956 kWh, crude oil equivalent: 13.9 kiloliters).

  Thus, even in the medium temperature adjustment system 81 according to the eighth embodiment, the COP of the air-cooled heat pump 4 is improved by appropriately introducing the warm air H to the air heat exchanger of the air-cooled heat pump 4 as in the first embodiment. It can be operated with a high heating capacity, and can be heated greatly with a relatively small amount of energy consumption. Moreover, it can be used to heat the cleaning liquid in the cleaning process at the parts factory F2. Furthermore, unlike the case where the air-cooled heat pump is simply installed outdoors as in the case of the outdoor installation method, there is almost no need to use a steam boiler, and it is not necessary to provide a second air-cooled heat pump instead of the steam boiler, thus reducing the initial cost. be able to.

[Ninth embodiment]
FIG. 12 is a schematic diagram of the medium temperature adjustment system 91 according to the ninth embodiment. The medium temperature adjustment system 91 is disposed in the coating factory F, and the air-cooled heat pump 4 is combined with the degreasing tank 2 and contains a chemical conversion solution. Except for heating the tank 92, it is the same as the fifth embodiment.

  That is, the medium temperature adjustment system 91 includes a branch supply pipe 92 for heating the degreasing liquid that branches from the supply pipe 12 and returns the warm water that is branched from the return pipe 14 and heated by heat exchange. A branch return pipe 94 is provided, and an automatic watering device 52 for spraying water W to the air heat exchanger of the air cooling heat pump 4 is further provided.

  Such a medium temperature adjustment system 91 supplies, for example, hot water of 55 degrees from the air-cooled heat pump 4 in order to keep the degreasing liquid or cleaning liquid at 45 degrees, while warm air H of 25 degrees generated from the drying furnace D of 120 degrees. When sucking into the air heat exchanger of the air-cooled heat pump 4, the operation shown in the column of “9th form” in the table of FIG. 13 is performed, and compared with the “conventional system” and “outdoor installation system” similar to the 8th form. And perform efficient operation.

  That is, the heating load for maintaining the degreasing tank 2 and the chemical conversion tank 92 at 45 degrees is 45 kW / h in the summer, 90 kW / h in the intermediate season, and 180 kW / h in the winter, and the outdoor-type air cooling heat pump and the ninth form of air cooling are used. Each operation can be considered in the same manner as in the eighth embodiment except that the heating capacity and COP of the heat pump 4 are related to the high outside air temperature specification air-cooled heat pump chiller.

And in summer 1 hour, gas 4.1Nm ³ is used in the conventional system, and in the outdoor installation system, the air suction temperature in the air heat exchanger of the air-cooled heat pump is 35 degrees, so the COP becomes 3.7 and 12.2 kWh. In the ninth embodiment, the air intake temperature is 35 degrees without introducing the warm air H into the air heat exchanger of the air-cooled heat pump 4, so that the ninth embodiment is the same as the outdoor installation method.

Also, in the middle season, gas 8.3 Nm ³ is used in the conventional system, and in the outdoor installation system, the air suction temperature in the air heat exchanger of the air-cooled heat pump is 15 degrees, so COP is 3.7 and 24.3 kWh In the ninth embodiment, the warm air H is introduced into the air heat exchanger of the air-cooled heat pump 4 to raise the air suction temperature from 15 degrees to 25 degrees, but the COP is the same as 3.7 in the outdoor installation method. The power consumption is also equivalent.

In addition, in 1 hour in winter, the conventional method uses 16.6 Nm ³ of gas, and the outdoor installation method consumes 50.7 kWh of power with an air suction temperature of 5 degrees, COP of 2.9, and a steam boiler. The city gas of 3.0Nm ³ is used, and in the 8th form, the warm air H is introduced into the air heat exchanger of the air-cooled heat pump 4 and the air suction temperature is raised from 5 degrees to 15 degrees, resulting in a COP of 3.7. The electric power is 48.6 kWh, and all heating loads can be covered by one air-cooled heat pump 4.

In addition, when the amount of energy used and CO ₂ emissions are calculated for each season in consideration of the operation time per day and the number of operation days for each season, in the summer the gas is 5364 Nm ³ · CO ₂ is 12.5 tons, In the outdoor installation method and the ninth form, electricity is 15762 kWh · CO ₂ is 7.2 tons, in the middle season the gas is 10933 Nm ³ · CO ₂ is 25.6 tons, in the outdoor installation method and the ninth form, electricity is 32303 kWh · CO ₂ 14.7 tons gas in a conventional manner in the winter 21192Nm ³ · CO ₂ is 49.4 tons, an outdoor installation means 29.5 tons and gas 3885Nm ³ · electricity 64883kWh · CO ₂ is electricity The total of 9.1 tons of gas is 38.6 tons, and in the ninth embodiment, electricity is 62270 kWh · CO ₂ is 28.3 tons.

Then, when the total energy consumption and CO ₂ emissions are calculated for each season, CO ₂ emissions are reduced by 31% in the outdoor installation method compared to 87.5 tons of the conventional method (60.4 ), Which is reduced by 43% in the ninth embodiment of the present invention (50.2 tons). In addition, the amount of energy used is reduced by 25% when compared to the conventional city gas of 37549 Nm ³ (crude oil equivalent 44.7 kiloliters) and the crude oil equivalent amount (electricity 112948 kWh, gas 3885 Nm ³ and crude oil equivalent total 33). .7 kiloliters), the ninth form reduces 36% (electricity: 11335 kWh / crude oil equivalent: 28.4 kiloliters).

Thus, even in the medium temperature adjustment system 91 according to the ninth embodiment, the COP of the air-cooled heat pump 4 is improved by appropriately introducing the warm air H to the air heat exchanger of the air-cooled heat pump 4 as in the fifth embodiment. It can be operated with a high heating capacity, and can be heated greatly with a relatively small amount of energy consumption. In particular, the CO ₂ emission is reduced to about half that of the conventional method. Usage is reduced by 36%. Further, similarly to the eighth embodiment, it is hardly necessary to use a steam boiler, and it is not necessary to provide a second air-cooled heat pump in place of the steam boiler, so that the initial cost can be suppressed.

[Tenth embodiment]
FIG. 14 is a schematic diagram of the medium temperature adjustment system 101 according to the tenth embodiment. In the medium temperature adjustment system 101, the air cooling heat pump 4 of the medium temperature adjustment system 101 is disposed in the compressor chamber F3, and the air in the compressor chamber F3 is shown. The compressor R is used as a heat source, and the warm air H in the compressor chamber F3 is led to the duct 22 or the factory ventilation fan 24 to become the exhaust warm air B, which is the same as in the second embodiment.

  Thus, in the medium temperature adjustment system 101, the warm air H from the compressor room F3 as a separate factory or belonging to the painting factory is also discharged to the air heat exchanger of the air-cooled heat pump 4 associated with the painting factory. It can introduce | transduce as the warm air B, and can improve the operating efficiency of the air cooling heat pump 4 similarly to the 2nd form.

[Eleventh form]
FIG. 15 is a schematic diagram of the medium temperature adjustment system 111 according to the eleventh embodiment. The medium temperature adjustment system 111 heats the air in the factory F4 by heat exchange because the air cooling heat pump 4 heats the factory F4. It becomes the same as that of the 10th form except supplying warm water.

  Thus, in the medium temperature adjustment system 111, the warm air H in the compressor room F3 can be sucked into the air heat exchanger of the air-cooled heat pump 4 that heats the factory F4. As in the tenth embodiment, the air-cooled heat pump 4 Operation efficiency can be improved.

[Twelfth embodiment]
FIG. 16 is a schematic diagram of the medium temperature adjustment system 121 according to the twelfth embodiment, in which the medium temperature adjustment system 111 guides the warm air H to the air heat exchanger of the air-cooled heat pump 4 through the duct 22 or the factory ventilation fan 24. Common to the second form.

  In the medium temperature adjustment system 121, the warm air H is in the boiler chamber F5 and uses heat generated during operation of the steam boiler J that supplies the steam T via the steam supply pipe 122 as a heat source. The air-cooling heat pump 4 receives water W in a water pipe, industrial water pipe, watering tank, etc. via a water supply pipe 124, heats it, and supplies it to the steam boiler J via a supply pipe 126.

  Also in the medium temperature adjustment system 121 according to the twelfth embodiment, the warm air H can be sucked into the air heat exchanger of the air-cooling heat pump 4, and the operating efficiency of the air-cooling heat pump 4 can be improved as in the second embodiment. Moreover, the warm water W can be supplied to the steam boiler J by effectively using the residual heat of the steam boiler J, and the efficiency of the steam boiler J can be improved and the amount of energy used can be reduced. Furthermore, the medium temperature adjustment system 121 can be configured simply by installing the duct 22 and the factory ventilation fan 24 via the air cooling heat pump 4 in the water supply system of the steam boiler J, and the cost can be reduced.

[13th form]
FIG. 17 is a schematic diagram of the medium temperature adjustment system 131 according to the thirteenth embodiment. The medium temperature adjustment system 131 has the characteristics of the fifth and twelfth embodiments.

  In other words, the medium temperature adjustment system 131 can introduce the warm air H of the boiler chamber F5 into the air heat exchanger of the air-cooled heat pump 4 that heats the water W with warm water (or by direct heat exchange) and supplies it to the steam boiler J. Furthermore, an automatic watering device 52 capable of watering the air heat exchanger is provided.

  Also in the medium temperature adjustment system 131 according to the thirteenth embodiment, the warm air H can be sucked into the air heat exchanger of the air-cooling heat pump 4, and the operation efficiency of the air-cooling heat pump 4 is improved and the operation is continued as in the fifth embodiment. It is possible to remove dust and the like from the air heat exchanger. Further, as in the twelfth embodiment, the energy consumption can be reduced by improving the efficiency of the steam boiler J while reducing the cost.

[14th form]
FIG. 18 is a schematic diagram of the medium temperature adjustment system 141 according to the fourteenth embodiment. The medium temperature adjustment system 141 includes a cleaning tank 142 that stores a cleaning liquid for cleaning the workpiece, and supplies the cleaning liquid (replenishment target). The temperature of the cleaning liquid is adjusted by adjusting the temperature of the water 143 (replenishment medium, here pure water but may be well water or industrial water). Note that the temperature of the degreasing liquid, the chemical conversion liquid, or a combination thereof may be adjusted instead of or together with the cleaning liquid (replenishing water).

  The make-up water pipe 143a through which make-up water passes is provided with a make-up water supply valve 143b for adjusting the supply amount of make-up water and a make-up water heat exchanger 144 (here, a counter flow) for heating the make-up water with warm water. Further, a heat exchanger 146 connected to the branch pipe 145 of the steam T for heating the cleaning tank 142 is provided. A hot water supply pipe 147 a from the heat pump water heater 147 and a hot water return pipe 147 b to the heat pump water heater 147 are connected to the makeup water heat exchanger 144. The warm water return pipe 147b is provided with a warm water circulation pump 147c. The branch pipe 145 is provided with a calorific value adjustment valve 145a. The heat pump water heater 147 may be for business use or for home use.

  In the medium temperature adjustment system 141, when the inlet temperature of the heat pump water heater 147 (the temperature of the hot water returned from the hot water return pipe 147b) exceeds a specified temperature (40 degrees), the heat pump cycle is not established and the heat pump water heater 147 becomes inoperable and stops. For example, the following operation is performed.

  That is, 15-degree makeup water passes through the makeup-water heat exchanger 144 and the heat exchanger 146 (steam 150 degrees) and reaches the cleaning tank 142 at the set temperature (60 degrees). The heat pump water heater 147 supplies hot water having a predetermined temperature (65 degrees) to the makeup water heat exchanger 144, and the hot water after the heat exchange returns through the hot water return pipe 147b. The return hot water is set to a flow rate that is lower than the specified temperature by the hot water circulation pump 147c controlled by the automatic control device.

  The details of such an operation will be described with reference to FIG. 19. The automatic control device determines whether or not the cleaning device to which the cleaning tank 142 belongs is in operation (step S61), and is not in operation (No). Then, the hot water circulation pump 147c is stopped (step S62), and the heat pump water heater 147 is stopped (step S63).

  On the other hand, when it is determined that the operation is in operation (Yes) in Step S61, the automatic control device checks whether or not the makeup water supply valve 143b is open (Step S64). If it is not open (No), the hot water circulation pump 147c is stopped (step S65), and the process returns to step S61. On the other hand, if it is open (Yes in step S64), automatic operation is started only when the heat pump water heater 147 is not operating automatically (steps S66 and S67), and operation is started only when the hot water circulation pump 147c is not operating. (Steps S68 and S69), it is determined whether or not the warm water return temperature exceeds a value that is larger than the temperature of the makeup water 143 by a specific value (8 degrees) (Step S70).

  When the warm water return temperature exceeds the makeup water temperature plus a specific value (Yes), the automatic control device reduces the flow rate of warm water by inverter control of the warm water circulation pump 147c (step S71). On the other hand, when the warm water return temperature is equal to or lower than the makeup water temperature plus a specific value (No), the warm water outlet temperature (makeup water pipe 143a) of the makeup water heat exchanger 144 is set to a predetermined value (10 from the warm water supply temperature (warm water supply pipe 147a). Whether or not it is less than a small value is determined, and only if so, the flow rate of the hot water is increased by inverter control of the hot water circulation pump 147c (steps S72 and S73). Then, the automatic control device returns the process to step S61.

  In the medium temperature adjustment system 141 according to the fourteenth aspect, the hot water of the heat pump water heater 147 is used to heat the makeup water, and the hot water inlet temperature is set to a predetermined value or less by adjusting the flow rate using the hot water circulation pump 147c. This makes it possible to use the hot water supply by the heat pump water heater 147 with good quality for adjusting the medium temperature, and to continue the operation.

[15th form]
FIG. 20 is a schematic diagram of the medium temperature adjustment system 151 according to the fifteenth embodiment. In the medium temperature adjustment system 151, air conditioning or temperature adjustment that can be switched in the cooling or heating mode in the factory F6. An air cooling heat pump 4 is arranged. In addition, a duct 22 through which warm air H passes above the factory F6 and a factory fan 152 adjacent to the air heat exchanger of the air cooling heat pump 4 are provided. Furthermore, a duct 32 for passing outside air A as cold air and a blower 34 adjacent to the air heat exchanger of the air cooling heat pump 4 are provided.

  As an example of operation, as shown in FIG. 20 (a), when the warm air H stays in the upper part of the factory F6 due to heating, although the room temperature is relatively low in winter or the like (15 degrees, upper 40 degrees), the factory fan 152 is The warm air H at the upper part of the factory F6 is applied (sucked) to the air heat exchanger of the air-cooled heat pump 4 to improve the efficiency and capacity of the air-cooled heat pump 4 that is heated.

  On the other hand, when the room temperature is high (38 degrees) in summer, etc., the blower 34 is operated so that the outside air A is applied to the air heat exchanger of the air-cooled heat pump 4 to prevent the air-cooled heat pump 4 that is air-cooled from shutting down. To improve.

  In the medium temperature adjustment system 151, the efficiency and capacity of the air-cooling heat pump 4 are improved by conveying the warm air H through the duct 32 even when heating operation is performed, even if the source of the warm-air H is not in the factory F6 or is far from the air-cooling heat pump 4. And greatly saving energy. If an air-cooled exhaust heat recovery type heat pump (equipment that supplies cold and hot heat at the same time and keeps the heat pump balance of cold and hot with an air heat source) is adopted as the air-cooled heat pump 4, In order to release excess heat to the air), cool air (outside air) is applied to the air heat exchanger. On the other hand, if the cold supply is smaller than the warm supply, heat is taken from the atmosphere (air), so that the efficiency can be increased by applying warm air H (heat belonging to the factory) to the air heat exchanger.

[16th form]
FIG. 21 is a schematic diagram of the medium temperature adjustment system 161 according to the sixteenth embodiment. In the medium temperature adjustment system 161, the heat pump is the air-cooled heat pump 4, and the branch pipe 145 and the heat exchanger 146 are omitted. Except this, the configuration is the same as that of the fourteenth embodiment. The medium temperature adjustment system 161 includes a cleaning liquid temperature sensor 162 that measures the cleaning liquid temperature of the cleaning tank 142, and the cleaning liquid temperature sensor 162 is connected to the automatic controller M.

  As an example of operation, when the cleaning liquid is controlled to a target temperature (65 degrees plus or minus 2 degrees), the makeup water can be controlled from 55 degrees to 85 degrees for the makeup water heat exchanger 144, and the air cooling heat pump 4 is heated to a warm water temperature of 60 to 90 degrees. The automatic control device M appropriately raises or lowers the temperature of the makeup water 143 based on the cleaning liquid temperature sequentially obtained from the cleaning liquid temperature sensor 162.

  That is, the automatic control device M sets the hot water supply temperature of the air-cooled heat pump 4 from 90 degrees to 70 degrees when the cleaning liquid temperature becomes equal to or higher than a predetermined upper value (67 degrees). On the other hand, when the cleaning liquid temperature becomes equal to or lower than the predetermined lower value (63 degrees), the automatic control device M sets the hot water supply temperature of the air cooling heat pump 4 to 70 degrees to 90 degrees. The makeup water 143 (15 degrees) becomes a set temperature (85 degrees) by heat exchange with warm water, and the cleaning liquid temperature is maintained at the target temperature.

  It should be noted that the temperature may be gradually raised and lowered further with respect to the hot water supply temperature. Further, the hot water supply temperature may be changed based on the temperature of the makeup water 143 instead of or together with the cleaning liquid temperature. Further, an outside air temperature sensor may be connected to the automatic control device M so as to raise or lower the upper limit of the hot water supply temperature according to the outside air temperature, thereby avoiding the operation of the hot water temperature at which the efficiency of the air cooling heat pump 4 is reduced. For example, when the outside air temperature is 7 degrees in winter or the like, the efficiency of the air-cooled heat pump 4 is COP3.0 when hot water is supplied at 90 degrees, while it is COP3.7 at 65 degrees, and the upper limit is 65 degrees for efficiency. Lower. In this case, when the amount of heat of the replenishing water 143 for the cleaning liquid is insufficient, the heating of the cleaning liquid is backed up by increasing the supply amount of steam T (150 degrees) as another heat source.

  In the medium temperature adjustment system 161, the heating amount for the replenishment medium is changed according to the medium temperature, so that the efficient operation of the air-cooled heat pump 4 can be continued.

[17th form]
FIG. 22 is a schematic diagram of the medium temperature adjustment system 171 according to the seventeenth embodiment. In the medium temperature adjustment system 171, the air-cooling heat pump 4 is connected to the makeup water pipe 143a so that makeup water 143 can be introduced. The configuration is the same as that of the sixteenth embodiment except that the hot water circuit is omitted. The medium temperature adjustment system 171 operates in the same manner as in the sixteenth embodiment, introduces makeup water 143, heats it, and supplies it to the cleaning tank 142. Even in the medium temperature adjustment system 171, the heating amount for the replenishing medium is changed according to the medium temperature, so that the efficient operation of the air-cooled heat pump 4 can be continued.

[18th form]
FIG. 23 is a schematic diagram of the medium temperature adjustment system 181 according to the eighteenth embodiment. In the medium temperature adjustment system 181, a three-way valve 143d (flow rate) is connected to the supply water pipe 143a (the supply source side from the air-cooled heat pump 4). The branch pipe 143e to the cleaning tank 142 is connected via the adjusting means / heat quantity adjusting means), and the automatic control device M is connected to the three-way valve 143d. The branch pipe 143 directly supplies the supply water 143 as a supply medium to the cleaning tank 142 (cleaning liquid) to be supplied without heating.

  The medium temperature adjustment system 181 operates in the same manner as in the seventeenth embodiment. That is, the air-cooling heat pump 4 introduces the replenishing water 143 that has passed through the three-way valve 143 d, heats it, and supplies it to the cleaning tank 142. The automatic control device M monitors the temperature of the washing water. When the temperature reaches, for example, 67 degrees, the branch pipe 143e side of the three-way valve 143d is fully opened (the air-cooled heat pump 4 side is fully closed) and the replenishing water is allowed to flow to the branch pipe 143e. On the other hand, when it reaches 64 degrees, the branch pipe 143e side of the three-way valve 143d is closed (the air cooling heat pump 4 side is fully opened), and the entire amount of makeup water is supplied to the air cooling heat pump 4. The opening degree (flow rate / heat amount) on the branch pipe 143e side (or on the air-cooled heat pump 4 side) of the three-way valve 143d may be stepwise.

  Even in the medium temperature adjustment system 181, the heating amount for the replenishment medium is changed by adjusting the branch amount of the replenishment medium according to the medium temperature, so that the efficient operation of the air-cooled heat pump 4 can be continued.

[19th form]
FIG. 24 is a schematic diagram of a medium temperature adjustment system 191 according to the nineteenth embodiment. The medium temperature adjustment system 191 includes a three-way valve 147d (a supply water temperature adjustment valve / warm water heat for supply water heating) in the hot water circuit of the air cooling heat pump 4. An exchange amount adjusting valve) and a branch pipe 147e are provided, and the configuration is the same as in the sixteenth embodiment. The three-way valve 147d is arranged in the hot water supply pipe 147a (before the make-up water heat exchanger 144), and the branch pipe 147e is installed between the three-way valve 147d and the hot water return pipe 147b (if the make-up branch, the make-up water heat exchanger 144 is connected). Return to the air-cooled heat pump 4 without passing). The automatic control device M is connected to the three-way valve 147d.

  The medium temperature adjustment system 191 operates in the same manner as in the sixteenth embodiment, and the automatic control device M controls the three-way valve 147d and adjusts the amount of hot water branching according to the cleaning liquid temperature to control the heating amount of the makeup water 143. To do. For example, for the 45 degree cleaning liquid, the 15 degree makeup water is set to 55 degrees, so the air-cooled heat pump 4 supplies 60 degree hot water and receives 30 degree return hot water after branching as appropriate.

  Even in the medium temperature adjustment system 191, the heating amount for the replenishment medium is changed by adjusting the hot water branch amount according to the medium temperature, so that the efficient operation of the air-cooled heat pump 4 can be continued.

[20th form]
FIG. 25 is a schematic diagram of the medium temperature adjustment system 201 according to the twentieth embodiment. The medium temperature adjustment system 201 is the same as the sixteenth embodiment except that a plurality of air-cooled heat pumps 4 are provided (in series). The air-cooled heat pump 4 is installed with a set temperature in order from the hot water return pipe 147b side. The automatic control device M can control each air-cooled heat pump 4.

  For example, six air-cooled heat pumps 4 are provided, and the receiving air water set temperature 30 degrees, forward (supply) set temperature 35 degrees, and then 35 degrees, 40 degrees, 40 degrees, 45 degrees, and 45 degrees in order.・ It is set to 50 degrees, 50 degrees and 55 degrees, 55 degrees and 60 degrees. The hot water finally heated to around 60 degrees reaches the makeup water heat exchanger 144, warms the 15 degrees makeup water 143 to 55 degrees, and keeps the cleaning liquid at around 45 degrees. It should be noted that a group belonging to the same set temperature may be created, such as setting 2 out of 6 units to 30 degrees and 40 degrees, and a plurality of such groups may be provided, or the temperature and setting range may be changed as appropriate. good. One air-cooled heat pump belonging to the same group of temperature settings may be used.

  The automatic control device M monitors the cleaning liquid temperature, and when the cleaning liquid temperature is higher than the target temperature, only the last air-cooled heat pump 4 (set to 55 degrees and 60 degrees) is stopped first, and the hot water supply temperature is set to 60. Decrease from 55 degrees to 55 degrees. If the cleaning liquid temperature does not drop even when the operation of the last air-cooled heat pump 4 is stopped, the second air-cooled heat pump 4 from the last is stopped, and so on. On the other hand, when the cleaning liquid temperature is lower (lower than the target temperature), the stopped air cooling heat pump 4 is operated (close to the previous one), the hot water temperature is raised, and the makeup water temperature is raised.

  Two specific examples including a comparison with a single air-cooled heat pump 4 will be described below.

  First, in order to keep the cleaning liquid in the cleaning tank 142 at 50 degrees, the makeup water 143 is changed from 20 degrees to 50 degrees. In the single air-cooled heat pump 4, 60 degrees hot water 525 kcal is required to cope with the heating load. / Min (0.61 kW / min) is sent (return temperature 55 degrees), so that power of 0.23 kW / min is consumed and COP becomes 2.6 (outside air temperature, that is, exhaust air temperature 16 degrees). On the other hand, in the case where a plurality of heat pumps 4 are used as in the medium temperature adjustment system 201, COP 4.1, 3.9, COP 4.1, 3.9, and so on in order from the most recent one under the same heating load (return hot water temperature 30 ° C. and outside air temperature 16 ° C.). 3.7, 3.3, 3.0, 2.6, and overall, COP 3.4 (power consumption 0.18 kW / min), COP 2.6 (0.23 kW) in the case of a single air-cooled heat pump 4 / Min).

Next, it is a case where the air of the drying furnace (not shown) is heated instead of the replenishing water in the cleaning tank 142 (refer to Japanese Patent Laid-Open No. 5-31417 as appropriate for conditions and various values). Air is introduced at 20 degrees, heated to 501 kcal / minute (0.58 kW / minute) by a heat exchanger (corresponding to the makeup water heat exchanger 144) filled with warm water of the air-cooled heat pump 4, and becomes warm air of 50 degrees, It is mixed with the circulating hot air of 70 degrees from the drying furnace to become a warm air of 68 degrees, and further heated by a city gas boiler (not shown) as another heat source (1830 kcal / min, 2.13 kW / min) It is supplied to the drying furnace as wind. In the single air-cooled heat pump 4, when the supply hot water temperature is 60 degrees and the return hot water temperature is 55 degrees, the COP is 2.6 and the power consumption is 0.22 kW / minute (the outside air is 16 degrees). On the other hand, when a plurality of heat pumps 4 are used as in the medium temperature adjustment system 201 (set temperature is reduced by 10 degrees), each COP is 4.1, 3.9, 3 at a supply hot water temperature of 50 degrees and a return hot water temperature of 20 degrees. 0.7, 3.3, 3.0, 2.6, resulting in a total COP of 3.4 and power consumption of 0.18 kW / min (outside air of 16 degrees). In addition, 70 degree | times * 65 m < ³ > / min exhaust is made | formed from a drying furnace.

  In the medium temperature adjustment system 201 described above, since a plurality of air-cooled heat pumps 4 are used, the heating amount can be adjusted efficiently or finely by grouping the temperature settings, and when the overall load is large. It is possible to cope with the above, and it is possible to introduce a smaller one than the case of a single case, the initial cost can be reduced by combination, and the efficiency can be further improved even when combined. Thus, the medium temperature adjustment with extremely high energy saving can be continued.

[21st form]
FIG. 26 is a schematic diagram of the medium temperature adjustment system 211 according to the twenty-first embodiment, and the medium temperature adjustment system 201 includes an air compressor R as in the tenth embodiment. The air compressor R is connected to a cooling tower 213 that cools the waste water through a waste water pipe 212 through which the waste water passes, and a cooling water pump 214 is provided from the cooling tower 213 to the air compressor R. A post-treatment exhaust hot water pipe 215 is connected. Further, the exhaust hot water pipe 212 includes a first branch pipe 216, and the first branch pipe 216 is connected to the three-way valve 218 connected to the second branch pipe 217 and the radiator 219 disposed adjacent to the air-cooled heat pump 4. It has. The radiator 219 passes the blower U in the factory, changes it into warm air, and sucks it into the air heat exchanger of the air-cooled heat pump 4. The three-way valve 218 is controlled by an automatic control device, and adjusts the amount of heat discharged to the radiator 219 by adjusting the amount of branching, thereby adjusting the amount of heat applied to the blower U (flow rate adjusting means / heat amount adjustment). means). The second branch pipe 217 joins the first branch pipe 216, and the first branch pipe 216 is connected to the air-cooled heat pump 4. Note that an inverter-controlled pump or the like that can adjust the flow rate of the discharged hot water may be employed as the heat amount adjusting means for the radiator 219.

  In this way, it is possible to generate warm air (warm air) from the waste water belonging to the factory and let the air heat exchanger of the air-cooled heat pump 4 absorb the warm air generated in the factory directly to the air heat exchanger. As in the case of hitting, the capacity and efficiency of the air-cooled heat pump 4 can be improved. Instead of the radiator, an injection device that injects (a part of) the exhaust warm water to the air heat exchanger may be provided, and the air sucked by the air heat exchanger may be warmed by applying the exhaust warm water to the air heat exchanger. Moreover, the said injection apparatus is good also as what injects the warm water heated with the exhausted warm water to an air heat exchanger.

  In addition, the modified example of each form is applicable also to another form suitably. The air-cooled heat pump includes an air-cooled heat recovery type heat pump (a device that supplies cold and hot heat at the same time and maintains a heat pump balance of cold and hot with an air heat source).

1, 21, 31, 41, 51, 61, 71, 81, 91, 101, 111, 121, 131, 141, 151, 161, 171, 181, 191, 201, 211 Medium temperature control system 2 Degreasing tank 4 Air cooling Heat pump 22 Duct (heat guide means)
24 Factory ventilation fan (heat guide means)
32 Duct (outside air guiding means)
34 Blower (outside air guiding means)
42 Indirect watering cooling device (cooling means)
52 Automatic watering device (cooling means)
82, 142 Cleaning tank 92 Chemical conversion tank 147 Heat pump water heater 147c Hot water circulation pump A Outside air B Waste hot air (heat)
D Drying furnace (heat source)
F painting factory (factory)
F2 parts factory (factory)
H Warm air (heat)

Claims (17)

Equipped with an air-cooled heat pump that heats the heating medium that heats the medium used in the factory,
The medium temperature adjustment system, wherein the air cooling heat pump is arranged so that heat from a heat source belonging to a factory is applied to an air heat exchanger of the air cooling heat pump. An air-cooled heat pump for heating a heating medium for heating a medium used in a factory;
A medium temperature adjustment system comprising: heat guide means for guiding heat from a heat source belonging to a factory to an air heat exchanger of the air-cooled heat pump. The medium temperature adjustment according to claim 1 or 2, wherein the heat from the heat source belonging to the factory is exhausted warm water belonging to the factory and / or heated air generated from the exhaust warm water belonging to the factory. system. 4. The medium temperature adjustment system according to claim 1, further comprising cold air guide means for introducing cold air to an air heat exchanger of the air-cooled heat pump. The air cooling heat pump is capable of heating operation and cooling operation,
During the cooling operation, cold air is applied to the air heat exchanger by the cold air guide means,
5. The medium temperature adjustment system according to claim 4, wherein, during the heating operation, heat from a heat source belonging to the factory is applied to the air heat exchanger. 6. The medium temperature adjustment system according to claim 1, wherein the heat source is air in an upper part of a factory. The medium temperature adjustment system according to claim 1, further comprising a cooling unit capable of cooling the heat. The medium temperature adjustment system according to claim 7, wherein the cooling unit is an automatic watering device that sprays water on an air heat exchanger of the air-cooled heat pump. The medium temperature adjustment system according to claim 8, wherein the automatic watering device periodically performs the watering. 10. The medium temperature adjustment system according to claim 8, wherein the automatic watering device performs the watering to cool the air hitting the air heat exchanger during heating operation of the air-cooled heat pump. A heat pump for heating a heating medium for heating a medium used in a factory;
A medium temperature adjustment system comprising: a calorific value adjusting means for adjusting a calorific value of a heating medium for heating the medium according to a temperature of the medium and / or the heating medium. 12. The medium temperature adjusting system according to claim 11, wherein the heat amount adjusting means is a flow rate adjusting means for adjusting a flow rate of the heating medium by inverter control. The heat quantity adjusting means is a flow rate adjusting means for adjusting a flow rate of the heating medium used for heating the medium by adjusting a branch flow rate of the heating medium to be returned without being used for heating the medium. The medium temperature adjustment system according to claim 11 or 12, The medium is a supply medium;
A pipe for heating the supply medium and supplying the supply medium to the supply object is provided with a branch pipe for supplying the supply medium to the supply object without heating.
The medium temperature adjustment system according to any one of claims 11 to 13, wherein the heat amount adjusting means is a flow rate adjusting means for adjusting a flow rate of a heating medium to the branch pipe. A plurality of the heat pumps are provided,
The plurality of heat pumps are divided into a plurality of groups having different temperature settings,
15. The medium temperature adjusting system according to claim 11, wherein the heat amount adjusting unit adjusts the heat amount of the heating medium by switching the operation state for each group. The medium temperature adjustment system according to claim 11, wherein the heat pump is an air-cooled heat pump. The medium temperature adjusting system according to any one of claims 11 to 16, wherein the heat pump is a heat pump water heater.

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