JP6978118B1 - Simultaneous cold and hot temperature control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To normally perform cooling of a first heat exchange fluid and heating of a second heat exchange fluid even in a usage environment where a cooling processing load is small. SOLUTION: When the first condition that the cooling treatment load is smaller than the heat treatment load is satisfied and the second condition that the outside temperature is equal to or lower than the first temperature is satisfied, the first heat medium liquid W3 is satisfied. While adjusting the flow rate of the flow path and the second flow path to the second adjusting unit (pump 31 and three-way valve 34), the passing amount of the heat exchanger 16 is larger than the passing amount of the evaporator 14 of the low temperature side refrigerant Rc. The first control mode in which the first adjusting unit (off-off valves 17a to 17d and the flow rate adjusting valves 13, 15) is adjusted so as to increase the number, and the third condition that the first condition is satisfied and the outside temperature is the second temperature or higher. When the conditions are satisfied, the flow rate of the first flow path and the second flow path of the heat medium liquid W3 is adjusted by the second adjusting unit, and the amount of the heat exchanger 14 is larger than the amount of passage of the heat exchanger 16 of the refrigerant Rc. It is configured to be controllable by the second control mode in which the first adjusting unit adjusts so that the passing amount is larger. [Selection diagram] Fig. 1

Description

The present invention makes it possible to heat the second heat exchange fluid supplied to the heating target by the high temperature side refrigeration circuit while cooling the first heat exchange fluid supplied to the cooling target with the multiple refrigeration cycle by the low temperature side refrigeration circuit. It relates to a configured cooling / temperature simultaneous temperature control device.

The invention of a heat pump type hot water supply device (hereinafter, also simply referred to as “hot water supply device”) is disclosed in the following patent document as this kind of simultaneous cooling / temperature adjusting device. This hot water supply device includes a first refrigerant in the low-stage side refrigerant circuit (hereinafter, also referred to as a "low-stage side refrigerant" in the "low-stage side circuit") and a second refrigerant in the high-stage side refrigerant circuit. It is equipped with a dual refrigeration cycle configured so that the refrigerant (hereinafter, also referred to as “high-stage side refrigerant” in the “high-stage side circuit”) can exchange heat with each other in the first heat exchanger. In addition, this hot water supply device includes hot water supply operation (operation for the purpose of hot water supply and does not perform heating and cooling), hot water supply and heating operation (hereinafter, also referred to as "hot water supply and heating operation"), hot water supply and cooling operation (hereinafter, "hot water supply and cooling operation"). It is configured to be capable of five types of operations: heating operation (operation for heating and not supplying hot water), and cooling operation (operation for cooling and not supplying hot water).

In this hot water supply device, during the hot water supply operation, all of the low-stage refrigerant discharged from the first compressor passes through the first heat exchanger and the second heat exchanger in this order, and then passes through the outdoor heat exchanger. The refrigerant flow path of the low-stage circuit is switched so as to be sucked into the first compressor. In this case, the temperature of the hot water is raised by being preheated by the second heat exchanger of the low-stage circuit and then heated by the condenser of the high-stage circuit. Further, during the hot water supply and heating operation, in addition to the above-mentioned flow path of the low-stage side refrigerant during the hot water supply operation, outdoor heat exchange occurs after a part of the low-stage side refrigerant discharged from the first compressor passes through the indoor heat exchanger. A refrigerant flow path is formed so as to pass through the vessel and be sucked into the first compressor. At this time, the temperature of the hot water is raised as in the hot water supply operation, and the temperature of the indoor air is raised in the indoor heat exchanger to heat the room.

Further, during the hot water supply / cooling operation, a part of the low-stage refrigerant discharged from the first compressor passes through the first heat exchanger and the second heat exchanger in this order, and then passes through the indoor heat exchanger. 1 The other part of the low-stage refrigerant that is sucked into the compressor and discharged from the first compressor passes through the outdoor heat exchanger and then passes through the indoor heat exchanger and is sucked into the first compressor. The refrigerant flow path is switched to. In this case, the temperature of the hot water is sufficiently raised by being preheated by the second heat exchanger of the lower circuit and then heated by the condenser of the higher circuit, and the temperature of the hot water supply is sufficiently raised, and the indoor heat exchanger is used indoors. The temperature of the air is lowered and the room is cooled.

Further, during the heating operation, the refrigerant flow path is such that all the low-stage refrigerant discharged from the first compressor passes through the indoor heat exchanger and then passes through the outdoor heat exchanger and is sucked into the first compressor. By switching, the temperature of the air in the room is raised in the indoor heat exchanger to heat the room. Further, during the cooling operation, the refrigerant flow path is such that all the low-stage refrigerant discharged from the first compressor passes through the outdoor heat exchanger and then passes through the indoor heat exchanger and is sucked into the first compressor. By switching between, the temperature of the air in the room is lowered in the indoor heat exchanger, and the room is cooled. As described above, in this hot water supply device, it is possible to perform heat treatment and / or cooling treatment according to the application by switching the flow path of the low-stage side refrigerant.

Japanese Unexamined Patent Publication No. 4-263758 (Pages 2-4, Fig. 1)

However, the hot water supply device disclosed in the above patent document has the following problems. Specifically, in the above-mentioned hot water supply device, in addition to hot water supply operation for the purpose of hot water supply only and heating operation and cooling operation for the purpose of air conditioning only, hot water supply heating operation and hot water supply for the purpose of parallel processing of hot water supply and air conditioning. A configuration that enables cooling operation is adopted. In this case, in order to heat the specified amount of hot water to the specified temperature within the specified time during the hot water supply heating operation or hot water cooling operation, the amount of high-stage side refrigerant required for heating the hot water supply water in the condenser of the high-stage side circuit Must be evaporated in the first heat exchanger, for which a sufficient amount of low-stage refrigerant is supplied to the first heat exchanger and the amount of low-stage refrigerant required to preheat the hot water is It is necessary to discharge a sufficient amount of the low-stage side refrigerant from the first compressor so as to be supplied to the second heat exchanger.

Further, in order to discharge the required amount of the low-stage side refrigerant from the first compressor during the hot water supply / cooling operation, it is necessary to evaporate a sufficient amount of the low-stage side refrigerant in the indoor heat exchanger. Therefore, when the cooling set temperature is high during the hot water supply cooling operation (an example when the cooling processing load for cooling to the cooling set temperature is small), all of the low-stage refrigerant in the amount to be discharged from the first compressor. When the air conditioner is evaporated in the indoor heat exchanger, the room may be cooled to a temperature lower than the set cooling temperature. Further, when the cooling is not performed to a temperature lower than the cooling set temperature, the required amount of low-stage refrigerant may not be discharged from the first compressor due to the small amount of evaporation in the indoor heat exchanger. .. Further, even when the room temperature during the hot water supply / cooling operation is low, the required amount of the low-stage refrigerant may not be discharged from the first compressor due to the small amount of evaporation in the indoor heat exchanger.

On the contrary, when the cooling set temperature is low during the hot water supply cooling operation (an example when the cooling processing load for cooling to the cooling set temperature is large), the air should be discharged from the first compressor as described above. Even if all of the low-stage refrigerant is evaporated in the indoor heat exchanger, it may not be possible to sufficiently cool the room to the cooling set temperature. Further, when the air conditioner is cooled to a temperature lower than the set cooling temperature, the amount of evaporation in the indoor heat exchanger becomes large, so that the amount of evaporation exceeds the amount to be supplied to the first heat exchanger and the second heat exchanger. The stage side refrigerant is discharged from the first compressor. As a result, the first heat exchanger evaporates an unnecessarily large amount of the high-stage side refrigerant, and the second heat exchanger preheats the hot water supply water more than necessary. Further, even when the room temperature is high during the hot water supply / cooling operation, the amount of evaporation in the indoor heat exchanger becomes large, so that a large amount of low steps exceeds the amount to be supplied to the first heat exchanger and the second heat exchanger. The side refrigerant is discharged from the first compressor, and as a result, an unnecessarily large amount of the high-stage side refrigerant is evaporated in the first heat exchanger, and the hot water supply water is preheated more than necessary in the second heat exchanger. It will be.

As described above, in the hot water supply device disclosed in the above patent document, the cooling of the indoor air (first heat exchange fluid) and the preheating of the hot water supply water (second heat exchange fluid) in the low stage side circuit (low temperature side refrigeration circuit) are performed. In the hot water supply cooling operation in which the hot water supply water (second heat exchange fluid) is heated in parallel in the high stage side circuit (high temperature side refrigeration circuit), it becomes difficult to cool to the cooling set temperature depending on the usage environment. Or, it may be difficult to heat the specified amount of hot water to the specified temperature within the specified time.

The present invention has been made in view of the problem to be solved, and cools the first heat exchange fluid and heats the second heat exchange fluid even in a usage environment where the cooling treatment load of the first heat exchange fluid is small. The main purpose is to provide a cooling / temperature simultaneous temperature control device that can be normally executed. In addition, it is also provided to provide a cold / temperature simultaneous temperature control device that can normally perform cooling of the first heat exchange fluid and heating of the second heat exchange fluid even in a usage environment where the cooling treatment load of the first heat exchange fluid is large. The purpose of.

In order to achieve the above object, the cold / hot simultaneous temperature control device according to claim 1 has a low temperature side refrigeration circuit and a high temperature side refrigeration circuit, and has a low temperature side refrigerant in the low temperature side refrigeration circuit and a high temperature side refrigeration circuit. The high temperature side refrigerant is configured to be heat exchangeable in the first heat exchanger, and the first heat exchange fluid supplied to the cooling target is configured to be coolable in the second heat exchanger of the low temperature side refrigeration circuit. A multiple refrigeration cycle configured to allow the second heat exchange fluid supplied to the heating target to be heated in the third heat exchanger of the high temperature side refrigeration circuit, and a cooling set temperature for cooling the first heat exchange fluid. And a cold / hot simultaneous temperature control device equipped with a control unit that controls the operation of the multiple refrigeration cycle according to the heating set temperature at which the second heat exchange fluid should be heated, and the third heat exchange fluid can be circulated. The fluid circulation path configured in the above, the fourth heat exchanger in which the third heat exchange fluid and the external heat source can be exchanged with each other, the first heat exchange fluid in which the cooling target is cooled, and the said. The fifth heat exchanger is arranged so that both fluids of the third heat exchange fluid that have exchanged heat with the external heat source in the fourth heat exchanger can exchange heat, and the high temperature side refrigerant in the first heat exchanger. A sixth heat exchanger arranged to enable heat exchange between the low temperature side refrigerant that has exchanged heat with the heat exchanger and the third heat exchange fluid that exchanges heat with the external heat source in the fourth heat exchanger. The first that adjusts the passing amount of the low temperature side refrigerant that has exchanged heat with the high temperature side refrigerant in the first heat exchanger through the second heat exchanger and the passing amount of the low temperature side refrigerant through the sixth heat exchanger. The fluid circulation path includes an adjusting unit and a second adjusting unit that adjusts the passing amount of the third heat exchange fluid that has exchanged heat with the external heat source in the fourth heat exchanger through the fifth heat exchanger. The first flow path through which the third heat exchange fluid that has exchanged heat with the external heat source in the fourth heat exchanger passes through the fifth heat exchanger and then through the sixth heat exchanger, and the third. The second flow path is provided with a second flow path through which the heat exchange fluid passes through the sixth heat exchanger without passing through the fifth heat exchanger, and the second adjusting unit is the first flow of the third heat exchange fluid. By adjusting the flow rate of the path and the flow rate of the second flow path of the third heat exchange fluid, the passage amount of the third heat exchange fluid through the fifth heat exchanger can be adjusted, and the control unit can be adjusted. Is the cooling process load of the cold temperature simultaneous temperature adjusting device for cooling the first heat exchange fluid to the cooling set temperature, and the cold temperature simultaneous temperature for heating the second heat exchange fluid to the heating set temperature. Tone When the first condition that it is smaller than the heat treatment load of the rectifier is satisfied, and the second condition that the temperature of the external heat source is equal to or less than the predetermined cooling set temperature and is equal to or less than the predetermined first temperature is satisfied. In addition, the second adjusting unit adjusts the flow rate of the first flow path of the third heat exchange fluid and the flow rate of the second flow path of the third heat exchange fluid according to the cooling set temperature. The first adjusting unit is adjusted so that the amount of passage of the low temperature side refrigerant through the sixth heat exchanger is larger than the amount of passage of the low temperature side refrigerant through the second heat exchanger. The cooling is performed when one control mode and the third condition of the first condition being satisfied and the temperature of the external heat source being higher than the cooling set temperature and a predetermined second temperature or higher are satisfied. The low temperature side refrigerant while having the second adjusting unit adjust the flow rate of the first flow path of the third heat exchange fluid and the flow rate of the second flow path of the third heat exchange fluid according to the set temperature. In the second control mode, the first adjusting unit is adjusted so that the amount of passage of the low temperature side refrigerant through the second heat exchanger is larger than the amount of passage of the low temperature side refrigerant through the sixth heat exchanger. The cold and hot simultaneous temperature control device is configured to be controllable.

The cold / hot simultaneous temperature adjusting device according to claim 2 is the cold / hot simultaneous temperature adjusting device according to claim 1. In the control unit, the low temperature side refrigerant passes through the second heat exchanger in the first control mode. The first adjusting unit is adjusted so as to pass through the sixth heat exchanger.

The cold / hot simultaneous temperature adjusting device according to claim 3 is the cold / hot simultaneous temperature adjusting device according to claim 1 or 2. In the control unit, the low temperature side refrigerant passes through the sixth heat exchanger in the second control mode. The first adjusting unit is adjusted so as to pass through the second heat exchanger without doing so.

The cold / hot simultaneous temperature adjusting device according to claim 4 is the cold / hot simultaneous temperature adjusting device according to any one of claims 1 to 3, wherein the control unit has a larger cooling treatment load than the heat treatment load. When the fourth condition is satisfied and the temperature of the external heat source is lower than the temperature of the third heat exchange fluid that exchanges heat with the external heat source and is equal to or lower than the predetermined third temperature. In addition, the second adjusting unit is adjusted so that the flow rate of the second flow path of the third heat exchange fluid is larger than the flow rate of the first flow path of the third heat exchange fluid. The cold / hot simultaneous temperature adjusting device is configured to be controllable in the third control mode in which the first adjusting unit adjusts the low temperature side refrigerant so as to pass through both the second heat exchanger and the sixth heat exchanger. There is.

The cold / hot simultaneous temperature adjusting device according to claim 5 blows ambient air as an external heat source to the fourth heat exchanger in the cold / hot simultaneous temperature adjusting device according to any one of claims 1 to 4. The control unit includes a blower fan, and controls the blower fan to change the amount of blown air to adjust the amount of heat exchange between the third heat exchange fluid and the air in the fourth heat exchanger.

In the cooling / temperature simultaneous temperature adjusting device according to claim 1, the control unit satisfies the first condition that the cooling treatment load is smaller than the heat treatment load, and the temperature of the external heat source is predetermined to be equal to or lower than the cooling set temperature. When the second condition of the first temperature or lower is satisfied, the flow rate of the first flow path of the third heat exchange fluid and the flow rate of the second flow path of the third heat exchange fluid are increased according to the cooling set temperature. While adjusting to the second adjusting unit, the first adjusting unit so that the amount of passage of the low temperature side refrigerant through the sixth heat exchanger is larger than the amount of passage of the low temperature side refrigerant passing through the second heat exchanger. Cooling when the first control mode is satisfied and the third condition is satisfied and the temperature of the external heat source is higher than the cooling set temperature and is equal to or higher than the predetermined second temperature. The low temperature side refrigerant is the sixth heat exchanger while the second adjusting unit adjusts the flow rate of the first flow path of the third heat exchange fluid and the flow rate of the second flow path of the third heat exchange fluid according to the set temperature. The cold / hot simultaneous temperature adjusting device is controlled by the second control mode in which the first adjusting unit adjusts so that the passing amount of the low temperature side refrigerant passes through the second heat exchanger is larger than the passing amount of the low temperature side refrigerant.

Therefore, according to the cooling / temperature simultaneous temperature adjusting device according to claim 1, the cooling treatment load is smaller than the heat treatment load, which may lead to overcooling of the first heat exchange fluid and insufficient heating of the second heat exchange fluid. In an environment, when the temperature of the external heat source is equal to or lower than the cooling set temperature (when the second condition is satisfied), the cold / hot simultaneous temperature adjusting device is controlled in the first control mode to exchange heat with the external heat source. The heat of the third heat exchange fluid whose temperature has risen due to the cooling of the first heat exchange fluid is transferred to the lower temperature side in the sixth heat exchanger while the first heat exchange fluid is cooled to the cooling set temperature by the third heat exchange fluid whose temperature has been lowered. The heat is absorbed by the refrigerant, and this heat and the heat generated by the compression in the compressor are absorbed by the high temperature side refrigerant in the first heat exchanger, so that the second heat exchange fluid is heated to the set temperature in the third heat exchanger. Can be heated sufficiently. Further, when the temperature of the external heat source is higher than the cooling set temperature (when the third condition is satisfied), the cooling / temperature simultaneous temperature adjusting device is controlled in the second control mode, and the cooling is performed by the second heat exchanger. The second heat exchanger is made by absorbing the heat absorbed from the external heat source to the third heat exchange fluid in the fourth heat exchanger from the third heat exchange fluid to the first heat exchange fluid in the fifth heat exchanger. Even if the heat of the first heat exchange fluid is sufficiently absorbed by the low temperature side refrigerant, the first heat exchange fluid can be cooled to the cooling set temperature without causing overcooling of the first heat exchange fluid, and the second heat can be obtained. By absorbing the heat absorbed by the low temperature side refrigerant in the exchanger and the heat generated by the compression in the compressor to the high temperature side refrigerant in the first heat exchanger, the second heat exchange fluid is heated and set in the third heat exchanger. It can be sufficiently heated to the temperature.

According to the cold / temperature simultaneous temperature adjusting device according to claim 2, the control unit first adjusts the low temperature side refrigerant to pass through the sixth heat exchanger without passing through the second heat exchanger in the first control mode. The first heat in the second heat exchanger is different from the configuration in which the low temperature side refrigerant is adjusted to pass through both the second heat exchanger and the sixth heat exchanger in the first control mode. Since heat absorption from the exchange fluid to the low temperature side refrigerant does not occur, the amount of heat that is insufficient due to the temperature rise of the low temperature side refrigerant due to compression in the compressor is absorbed from the third heat exchange fluid in the sixth heat exchanger. The second heat exchange fluid can be sufficiently heated to the set heating temperature without causing overcooling of the heat exchange fluid.

According to the cold / temperature simultaneous temperature adjusting device according to claim 3, the control unit first adjusts the low temperature side refrigerant to pass through the second heat exchanger without passing through the sixth heat exchanger in the second control mode. The third heat in the sixth heat exchanger is different from the configuration in which the low temperature side refrigerant is adjusted to pass through both the second heat exchanger and the sixth heat exchanger in the second control mode. Since heat absorption from the exchange fluid to the low temperature side refrigerant does not occur, the amount of heat that is insufficient due to the temperature rise of the low temperature side refrigerant due to compression in the compressor is absorbed by the first heat exchange fluid via the third heat exchange fluid to be cooled. The second heat exchange fluid is heated without causing overcooling of the first heat exchange fluid by easy control of absorbing heat from the first heat exchange fluid to the low temperature side refrigerant in the second heat exchanger together with the heat applied by the cooling. It can be sufficiently heated to the set temperature.

In the cooling / temperature simultaneous temperature adjusting device according to claim 4, the control unit satisfies the fourth condition that the cooling treatment load is larger than the heat treatment load, and the temperature of the external heat source exchanges heat with the external heat source. When the fifth condition of a predetermined third temperature or lower, which is lower than the temperature of the heat exchange fluid, is satisfied, the second flow rate of the third heat exchange fluid is higher than the flow rate of the first flow path of the third heat exchange fluid. The second adjusting section is adjusted so that the flow rate of the flow path is larger, and the first adjusting section is adjusted so that the low temperature side refrigerant passes through both the second heat exchanger and the sixth heat exchanger. 3 The cold / hot simultaneous temperature control device is controlled in the control mode.

Therefore, according to the cooling / temperature simultaneous temperature adjusting device according to claim 4, the cooling treatment load is larger than the heat treatment load, which may lead to overheating of the second heat exchange fluid and insufficient cooling of the first heat exchange fluid. In an environment, when the temperature of the external heat source is lower than the temperature of the third heat exchange fluid that exchanges heat with the external heat source (when the fifth condition is satisfied), the cold / hot simultaneous temperature adjusting device in the third control mode. Is controlled, heat that cannot be dissipated to the high temperature side refrigeration circuit via the first heat exchanger in the low temperature side refrigeration circuit is dissipated to the third heat exchange fluid via the sixth heat exchanger, and the fourth Since heat is dissipated from the third heat exchange fluid to the external heat source in the heat exchanger, the first heat exchange fluid can be cooled to the cooling set temperature without causing overheating of the second heat exchange fluid in the high temperature side refrigeration circuit. A necessary and sufficient amount of low temperature side refrigerant can be supplied to the second heat exchanger to sufficiently cool the first heat exchange fluid to the cooling set temperature.

According to the cooling / temperature simultaneous temperature adjusting device according to claim 5, the control unit controls a blower fan that blows ambient air (outside air) as an external heat source to the fourth heat exchanger to change the amount of blown air. By adjusting the amount of heat exchange between the third heat exchange fluid and air in the fourth heat exchanger, for example, by changing the pumping amount of the third heat exchange fluid by the pump, the sixth heat exchanger and the third heat exchanger can be used. 5 Compared with the configuration in which the amount of heat exchange is changed in the heat exchanger, the temperature of the third heat exchange fluid that exchanges heat with the low temperature side refrigerant or the first heat exchange fluid can be adjusted to a desired temperature relatively easily. Therefore, the amount of heat exchange in the sixth heat exchanger and the fifth heat exchanger can be reliably and easily controlled to a desired amount of heat exchange.

It is a block diagram which shows the structure of the cold temperature simultaneous temperature adjustment apparatus 1. It is explanatory drawing for demonstrating the operation at the time of starting of the cold temperature simultaneous temperature adjustment apparatus 1, and the operation in the state which the cooling process load and the heat process load are balanced. It is explanatory drawing for demonstrating operation in the 1st endothermic mode. It is explanatory drawing for demonstrating operation in a 2nd endothermic mode. It is explanatory drawing for demonstrating operation in a heat dissipation mode.

Hereinafter, embodiments of the simultaneous cooling / temperature adjusting device will be described with reference to the accompanying drawings.

First, the configuration of the cold / hot simultaneous temperature adjusting device 1 will be described with reference to the attached drawings.

The cold / hot simultaneous temperature adjusting device 1 shown in FIG. 1 corresponds to a “cold / hot simultaneous temperature adjusting device”, and as an example, a heater (not shown) that heats the cleaning liquid in a cleaning device (not shown) that cleans an object with a high temperature cleaning liquid (not shown). An example of a "heating target": Hereinafter, a high-temperature heat medium liquid Wh (an example of a "second heat exchange fluid") is supplied to a "heating target XH" via a heat medium liquid circulation path LH, and heating is performed. An example of a "cooling target": hereinafter also referred to as a "cooling target XC") that cools and liquefies the cleaning liquid vaporized by heating in the target XH (heater) via a heat medium liquid circulation path LC. It is configured to be able to supply a low-temperature heat medium liquid Wc (an example of a "first heat exchange fluid").

The cold / temperature simultaneous temperature adjusting device 1 includes a dual refrigeration cycle 2, a heat medium liquid circulation path 3, an operation unit 4, a display unit 5, a control unit 6, and a storage unit 7. In this example, the heat medium liquid Wh is supplied to the heating target XH and the heat medium liquid Wc is supplied to the cooling target XC by using the heat medium liquid circulation paths LH and LC which are ancillary equipment of the cleaning device. As will be described, a supply pipe for supplying the "first heat exchange fluid" (the above heat medium liquid circulation path LC) and a supply pipe for supplying the "second heat exchange fluid" (the above heat medium liquid circulation path). LH) can also be provided as a component of the "cooling / temperature simultaneous temperature adjusting device".

On the other hand, the dual refrigeration cycle 2 is an example of the "multi-element refrigeration cycle" and is an example of the "low temperature side refrigeration circuit", that is, the low temperature side refrigeration circuit (low stage side refrigeration circuit) 2C and the "high temperature side refrigeration circuit". It is provided with a high temperature side refrigeration circuit (high stage side refrigeration circuit) 2H, which is an example. In this dual refrigeration cycle 2, the low temperature side refrigerant Rc (an example of "low temperature side refrigerant") circulated in the low temperature side refrigeration circuit 2C and the high temperature side refrigerant Rh ("high temperature side refrigerant") circulated in the high temperature side refrigeration circuit 2H. An example of the "side refrigerant") is configured to be mutually heat exchangeable in the cascade condenser 12 which is an example of the "first heat exchanger".

In the low temperature side refrigeration circuit 2C, in addition to the above-mentioned cascade condenser 12 shared with the high temperature side refrigeration circuit 2H, the compressor 11, the flow rate adjusting valve 13, the evaporator 14, the flow rate adjusting valve 15, the heat exchanger 16 and the on-off valve 17a to It is configured to include 17d. The compressor 11 compresses (presses) the low temperature side refrigerant Rc according to the control of the control unit 6. As described above, the cascade condenser 12 is arranged so as to enable heat exchange between the low temperature side refrigerant Rc in the low temperature side refrigerating circuit 2C and the high temperature side refrigerant Rh in the high temperature side refrigerating circuit 2H, and the high temperature side refrigerant Rh. It functions as a "condenser" that condenses the low-temperature side refrigerant Rc by heat exchange with.

The flow rate adjusting valve 13 is arranged on the upstream side of the evaporator 14 in the flow path of the low temperature side refrigerant Rc, functions as one of the "expansion valves", and passes through the evaporator 14 (in the evaporator 14). The flow rate of the low temperature side refrigerant Rc (to be evaporated) is adjusted according to the control of the control unit 6. The evaporator 14 is an example of a “second heat exchanger”, and as will be described later, the low temperature side refrigerant Rc passed through the flow rate adjusting valve 13 and the heat medium liquid Wc (cooling) in the heat medium liquid circulation path LC. The heat medium liquid Wc is cooled and the low temperature side refrigerant Rc is evaporated by heat exchange with the heat medium liquid Wc) supplied to the target XC.

The flow control valve 15 is arranged on the upstream side of the heat exchanger 16 in the flow path of the low temperature side refrigerant Rc, functions as another one of the "expansion valves", and allows the heat exchanger 16 to pass through (the flow control valve 15). The flow rate of the low temperature side refrigerant Rc (which evaporates or condenses in the heat exchanger 16) is adjusted according to the control of the control unit 6. The heat exchanger 16 is an example of the “sixth heat exchanger”, the low temperature side refrigerant Rc that has exchanged heat with the high temperature side refrigerant Rh in the cascade condenser 12, and the heat medium liquid in the heat medium liquid circulation path 3 described later. Both fluids of W3 (an example of "third heat exchange fluid") are arranged so as to be capable of heat exchange.

The on-off valves 17a to 17d are pressure-fed by the compressor 11 and exchanged heat with the high-temperature side refrigerant Rh in the cascade condenser 12, according to the control of the control unit 6, and the amount of passage of the low-temperature side refrigerant Rc through the evaporator 14 and the heat exchanger 16. Adjust the amount of passage. In this case, in the cooling / temperature simultaneous temperature adjusting device 1 (low temperature side refrigerating circuit 2C) of this example, the flow rate adjusting valves 13 and 15 and the on-off valves 17a to 17d are combined to form a “first adjusting unit”.

The high temperature side refrigeration circuit 2H includes a compressor 21, a condenser 22, and a flow rate control valve 23 in addition to the above-mentioned cascade condenser 12 shared with the low temperature side refrigeration circuit 2C. The compressor 21 compresses (presses) the high temperature side refrigerant Rh according to the control of the control unit 6. The condenser 22 is an example of the “third heat exchanger”, and is the high temperature side refrigerant Rh pumped by the compressor 21 (discharged from the compressor 21) and the heat medium liquid in the heat medium liquid circulation path LH. The heat medium liquid Wh is heated by heat exchange with Wh (heat medium liquid Wh supplied to the heating target XH), and the high temperature side refrigerant Rh is condensed.

The flow rate adjusting valve 23 is arranged on the upstream side of the cascade condenser 12 in the flow path of the high temperature side refrigerant Rh, and adjusts the flow rate of the high temperature side refrigerant Rh passing through the cascade condenser 12 according to the control of the control unit 6. In the high temperature side refrigeration circuit 2H, the flow rate adjusting valve 23 functions as an "expansion valve", and the cascade condenser 12 functions as an "evaporator" that evaporates the high temperature side refrigerant Rh by heat exchange with the low temperature side refrigerant Rc. do.

The heat medium liquid circulation path 3 is an example of a “fluid circulation path”, and is configured to be able to circulate the heat medium liquid W3. Specifically, the heat medium liquid circulation path 3 is configured to include a pump 31, heat exchangers 32, 33, and a three-way valve 34 in addition to the above-mentioned heat exchanger 16 shared with the low temperature side refrigeration circuit 2C. .. The pump 31 circulates the heat medium liquid W3 under the control of the control unit 6. In the cold / hot simultaneous temperature adjusting device 1 (heat medium liquid circulation path 3) of this example, as an example, the pump 31 is configured by a liquid feeding pump with a fixed pumping amount.

The heat exchanger 32 is an example of the “fourth heat exchanger” and heat exchange between the heat medium liquid W3 and the “outside air (air around the heat exchanger 32)” which is an example of the “external heat source”. (The heat of the outside air is absorbed by the heat medium liquid W3 or the heat of the heat medium liquid W3 is dissipated to the outside air). The heat exchanger 32 is provided with a variable rotation speed blower 32a (an example of a “blower fan”) that blows outside air to the heat exchanger 32 under the control of the control unit 6. As a result, in the cold / temperature simultaneous temperature control device 1 (heat medium liquid circulation path 3) of this example, the heat exchange amount between the heat medium liquid W3 and the outside air in the heat exchanger 32 is changed by changing the amount of air blown to the heat exchanger 32. Is configured to be adjustable. The heat exchanger 33 is an example of the “fifth heat exchanger”, and both the heat medium liquid Wc whose temperature has risen due to the cooling of the cooling target XC and the heat medium liquid W3 which has exchanged heat with the outside air in the heat exchanger 32. It is arranged so that heat exchange of the fluid is possible.

The three-way valve 34 is an example of the "second adjusting unit", and under the control of the control unit 6, the passing amount of the heat exchanger 33 of the heat medium liquid W3 that has exchanged heat with the outside air in the heat exchanger 32 can be adjusted. It is arranged in. In this case, the heat medium liquid circulation path 3 of this example is a “first flow path” in which the heat medium liquid W3 that has exchanged heat with the outside air in the heat exchanger 32 passes through the heat exchanger 16 and then passes through the heat exchanger 16. And a "second flow path" in which the heat medium liquid W3 passes through the heat exchanger 16 without passing through the heat exchanger 33. Further, in the heat medium liquid circulation path 3 of this example, the three-way valve 34 has a flow rate of the “first flow path” of the heat medium liquid W3 and a “second flow path” of the heat medium liquid W3 under the control of the control unit 6. A configuration is adopted in which the "passage amount of the third heat exchange fluid through the fifth heat exchanger (passage amount of the heat exchanger 33 of the heat medium liquid W3)" is adjusted by adjusting the flow rate of the heat exchanger.

The operation unit 4 includes the temperature of the heat medium liquid Wc supplied to the cooling target XC via the heat medium liquid circulation path LC (cooling set temperature of the heat medium liquid Wc by the cold / hot simultaneous temperature adjusting device 1) and the heat medium liquid circulation path. A switch equipped with an operation switch for setting various operating conditions such as the temperature of the heat medium liquid Wh supplied to the heating target XH via the LH (heating set temperature of the heat medium liquid Wh by the simultaneous cooling / temperature adjusting device 1). The operation signal corresponding to the operation is output to the control unit 6. The display unit 5 has an operating condition setting screen for setting the operating conditions of the cold / hot simultaneous temperature adjusting device 1 and an operating state display screen showing the operating state of the cold / hot simultaneous temperature adjusting device 1 under the control of the control unit 6 (whichever). (Not shown) etc. are displayed.

The control unit 6 is an example of the “control unit” and comprehensively controls the cold / temperature simultaneous temperature adjusting device 1. Specifically, the control unit 6 has a cooling set temperature (designated by the user) for cooling the heat medium solution Wc and a heating set temperature (designated by the user) for heating the heat medium solution Wh. The operation of the dual refrigeration cycle 2 and the heat medium liquid circulation path 3 is controlled according to the heating target temperature). In this case, the control unit 6 mainly has a cooling processing load of the cold temperature simultaneous temperature adjusting device 1 for cooling the heat medium liquid Wc to the cooling set temperature and a cold temperature simultaneous cooling for heating the heat medium liquid Wh to the heating set temperature. Each part is controlled according to the magnitude relationship with the heat treatment load of the temperature adjusting device 1.

The cooling treatment load and the heat treatment load include the cooling set temperature, the heating set temperature, the temperature before the cooling treatment of the heat medium liquid Wc, the temperature before the heat treatment of the heat medium liquid Wh, the flow rate of the heat medium liquid Wc, and the heat medium liquid. It changes according to the flow rate of Wh and the outside temperature (hereinafter, these parameters are collectively referred to as "use environment"). Therefore, in the cold / temperature simultaneous temperature adjusting device 1 of this example, as an example, the cooling treatment load is sequentially specified based on the condensation temperature of the low temperature side refrigerant Rc in the low temperature side refrigerating circuit 2C, and the high temperature side refrigerant in the high temperature side refrigerating circuit 2H is specified. A configuration is adopted in which the heat treatment load is sequentially specified based on the condensation temperature of Rh. The control of each component of the dual refrigeration cycle 2 (low temperature side refrigeration circuit 2C and high temperature side refrigeration circuit 2H) and the heat medium liquid circulation path 3 by the control unit 6 will be described in detail later with specific examples. explain. The storage unit 7 stores the operation program of the control unit 6, the calculation result of the control unit 6, and the like.

The cold / temperature simultaneous temperature adjusting device 1 actually includes the pressure and temperature of the low temperature side refrigerant Rc in the low temperature side refrigeration circuit 2C, the pressure and temperature of the high temperature side refrigerant Rh in the high temperature side refrigeration circuit 2H, and heat medium liquid circulation. Various sensors for detecting the temperature of the heat medium liquid W3 in the passage 3, the outside temperature, the temperature of the heat medium liquid Wc, the temperature of the heat medium liquid Wh, etc. are arranged, and the configuration of the cold temperature simultaneous temperature adjusting device 1 is provided. Illustrations and detailed description of these sensors are omitted for ease of understanding.

During the cooling treatment of the heat medium liquid Wc and the heat treatment of the heat medium liquid Wh by the cold / temperature simultaneous temperature adjusting device 1, the control unit 6 first controls the pump 31 of the heat medium liquid circulation path 3 as shown in FIG. Then, the pressure feeding of the heat medium liquid W3 is started, and the blower 32a is controlled to start the blowing, and the operation of the low temperature side refrigerating circuit 2C and the high temperature side refrigerating circuit 2H is started. In the same figure and FIGS. 3 to 5 referred to later, the flow path in which the low temperature side refrigerant Rc is allowed to pass through is shown by a solid line in the low temperature side refrigerating circuit 2C, and the passage of the low temperature side refrigerant Rc is restricted. The flow path is shown by a broken line, and the flow path in which the heat medium liquid W3 is allowed to pass through the heat medium liquid circulation path 3 is shown by a solid line, and the passage of the heat medium liquid W3 is restricted. Is illustrated by a broken line.

Specifically, the control unit 6 controls the on-off valve 17b to the open state, controls the on-off valves 17a, 17c, 17d to the closed state, and sets the flow rate adjusting valve 15 to the minimum opening state (closed state). The low-temperature side refrigerant Rc compressed (press-fed) by the compressor 11 by controlling and controlling the opening required to function the flow rate adjusting valve 13 as the "expansion valve" is the cascade condenser 12, the on-off valve. A refrigerant flow path is formed which is sucked into the compressor 11 via 17b, the flow rate adjusting valve 13, and the evaporator 14.

At this time, the high-temperature low-temperature side refrigerant Rc discharged from the compressor 11 is condensed by radiating heat to the high-temperature side refrigerant Rh in the cascade condenser 12 to lower the temperature, and the high-temperature side refrigerant Rh evaporates (temperature rises). ). Further, the condensed low-temperature side refrigerant Rc absorbs heat from the heat medium liquid Wc in the evaporator 14 after passing through the flow rate adjusting valve 13 to raise the temperature, thereby evaporating and cooling the heat medium liquid Wc.

Further, the high temperature side refrigerant Rh whose temperature is raised by the heat absorption in the cascade condenser 12 and is further raised in temperature by the compression in the compressor 21 is radiated to the heat medium liquid Wh in the condenser 22 and condensed. The heat medium solution Wh is heated together with the heat medium solution Wh. Further, the condensed high temperature side refrigerant Rh is endothermic and evaporated from the low temperature side refrigerant Rc in the cascade capacitor 12 as described above after passing through the flow rate adjusting valve 23. As a result, the low-temperature heat medium liquid Wc cooled by the low-temperature side refrigeration circuit 2C is supplied to the cooling target XC, and the high-temperature heat medium liquid Wh heated by the high-temperature side refrigeration circuit 2H is supplied to the heating target XH. To.

The number of revolutions of the compressor 11 (pressure feed amount of the low temperature side refrigerant Rc), the opening degree of the "expansion valve (at this point, the flow rate adjusting valve 13)", etc. are set according to the cooling set temperature and the temperature of the heat medium liquid Wc. Regarding the control to change, and the control to change the rotation speed of the compressor 21 (pressure feed amount of the high temperature side refrigerant Rh), the opening degree of the flow rate adjusting valve 23, etc. according to the set heating temperature and the temperature of the heat medium liquid Wh, there are multiple elements. Since it is the same as the control generally performed in the cold / temperature simultaneous temperature control device having a refrigeration cycle, detailed description of these controls will be omitted.

In this case, in the cold / temperature simultaneous temperature adjusting device 1 of this example, as described above, the control unit 6 mainly bases the magnitude relationship between the cooling treatment load and the heat treatment load on the dual refrigeration cycle 2 and the heat medium liquid circulation path 3. Control the operation of each part of. Specifically, the control unit 6 specifies the condensation temperature of the low-temperature side refrigerant Rc and the high-temperature side refrigerant Rh from the time when the operation of the cold / hot simultaneous temperature adjusting device 1 is started, and the cooling processing load and the cooling processing load are based on the specified temperature. Specify each heat treatment load. At this time, when the usage environment is such that both the specified cooling treatment load and the heat treatment load are balanced within a predetermined allowable difference range, the control unit 6 controls the flow of the low temperature side refrigerant Rc. The road is maintained in the state at the time of starting (the state shown in FIG. 2) (operation in the normal mode). When the operation is continued for a long time in such a usage environment (when there is a high possibility that the operation does not immediately shift to the endothermic mode or the heat dissipation mode described later), the pump of the heat medium liquid circulation path 3 31 and the blower 32a may be stopped.

On the other hand, it is specified in a usage environment where the temperature difference between the set cooling temperature and the heat medium solution Wc before the cooling treatment is small, or when the temperature difference between the set heating temperature and the heat medium solution Wh before the heat treatment is large. The cooling treatment load to be applied is smaller than the heat treatment load (an example when the "first condition" is satisfied). Under such a usage environment, the control unit 6 operates the cold / temperature simultaneous temperature adjusting device 1 in either the first endothermic mode or the second endothermic mode according to the relationship between the temperature of the outside air and the set cooling temperature.

Specifically, when the cooling treatment load is smaller than the heat treatment load, the control unit 6 first performs these operations when the pump 31 and the blower 32a are stopped, as shown in FIGS. 3 and 4. At the same time as starting, the three-way valve 34 is controlled so that the heat medium liquid W3 passes through both the above-mentioned "first flow path" and the "second flow path". Further, as an example, the control unit 6 controls the blower 32a so that the temperature of the heat medium liquid W3 immediately after passing through the heat exchanger 32 becomes the same as the temperature of the outside air, and sends the outside air to the heat exchanger 32. Adjust the air volume. As a result, the heat medium liquid W3 having a temperature similar to that of the outside air temperature is pumped by the pump 31.

Further, when the temperature of the outside air is equal to or less than the predetermined cooling set temperature or less than the predetermined first temperature (for example, "first temperature" = "cooling set temperature") (when the "second condition" is satisfied). (1 example), the control unit 6 controls the dual refrigeration cycle 2 and the heat medium liquid circulation path 3 to operate in the first endothermic mode (an example of the "first control mode"). Specifically, as shown in FIG. 3, the control unit 6 controls the on-off valves 17b and 17c to the open state, controls the on-off valves 17a and 17d to the closed state, and minimizes the flow rate adjusting valve 13. The opening degree (closed state) is controlled, and the flow rate adjusting valve 15 is controlled to the opening degree required to function as the "expansion valve" of the low temperature side refrigeration circuit 2C.

As a result, in the low temperature side refrigeration circuit 2C, the low temperature side refrigerant Rc compressed (pushed) by the compressor 11 is compressed via the cascade condenser 12, the on-off valve 17b, the flow rate adjusting valve 15, the heat exchanger 16 and the on-off valve 17c. A refrigerant flow path that is sucked into the machine 11 (passes through the heat exchanger 16 without passing through the evaporator 14) is formed (“the lower temperature side than the amount of passage of the low temperature side refrigerant through the second heat exchanger”). An example of control that "the first adjusting unit is adjusted so that the amount of passage of the refrigerant through the sixth heat exchanger is larger"). Further, the control unit 6 controls the three-way valve 34 according to the temperature of the heat medium liquid W3 after passing through the heat exchanger 33, and controls the flow rate of the “first flow path” of the heat medium liquid W3 and the “second flow path”. To adjust the flow rate. As a result, the cold / hot simultaneous temperature adjusting device 1 is in a state of operating in the first endothermic mode.

In this first heat absorption mode, in the heat medium liquid circulation path 3, the heat medium liquid W3 having a temperature similar to the temperature of the outside air due to heat exchange with the outside air in the heat exchanger 32 is pressure-fed by the pump 31, one of them. When the unit is passed through the heat exchanger 33, it is heat-exchanged with the heat medium liquid Wc whose temperature has been raised by the cooling of the cooling target XC. As a result, the heat medium liquid Wc is cooled to the cooling set temperature, and the temperature of the heat medium liquid W3 is higher than the temperature of the outside air (the temperature of the heat medium liquid Wc after the cooling treatment of the cooling target XC). Can be raised to.

Further, in the low temperature side refrigeration circuit 2C, the high temperature low temperature side refrigerant Rc discharged from the compressor 11 is radiated and condensed in the high temperature side refrigerant Rh in the cascade condenser 12, and the high temperature side refrigerant Rh is evaporated (temperature rise). After passing through the flow rate adjusting valve 15, the condensed low-temperature side refrigerant Rc absorbs heat from the heat medium liquid W3 in the heat exchanger 16 to raise the temperature. Further, in the high temperature side refrigeration circuit 2H, the high temperature side refrigerant Rh that has been evaporated in the cascade condenser 12 and further raised in temperature by the compression in the compressor 21 dissipates heat to the heat medium liquid Wh in the condenser 22 and condenses it. At the same time, the heat medium solution Wh is heated.

That is, in the first heat absorption mode in which the cooling treatment load is small and the temperature of the outside air is low to some extent, the heat of the heat medium liquid Wc whose temperature has risen due to the cooling of the cooling target XC passes through the heat medium liquid W3. The heat is absorbed by the low temperature side refrigerant Rc, and this heat is absorbed by the high temperature side refrigerant Rh in the cascade condenser 12. As a result, a sufficient amount of the high temperature side refrigerant Rh can be evaporated in the cascade condenser 12 without operating the low temperature side refrigeration circuit 2C in an operating state where overcooling occurs, so that the heat medium liquid Wc is set to the cooling set temperature. While cooling (without overcooling), the heat medium solution Who can be sufficiently heated to the set heating temperature.

When the temperature of the outside air is sufficiently lower than the cooling set temperature during the operation in the first heat absorption mode, the three-way valve 34 reduces the amount of heat medium liquid W3 passing through the heat exchanger 33 to generate heat. Prevents overcooling of the medium solution Wc. Further, when the temperature of the outside air is close to the cooling set temperature, the heat medium liquid Wc is changed to the temperature of the outside air (cooling setting) by increasing the passing amount of the heat medium liquid W3 passing through the heat exchanger 33 by the three-way valve 34. Allow to cool sufficiently to temperature). As a result, the low-temperature heat medium liquid Wc cooled to the cooling set temperature is supplied to the cooling target XC, and the high-temperature heat medium liquid Wh heated to the heating set temperature is supplied to the heating target XH. In this case, the above-mentioned "first temperature", which is one of the discrimination conditions when operating in the first heat absorption mode, is from the same temperature as the set cooling temperature to a temperature about 10 ° C lower than the set cooling temperature. By defining the temperature within the range (for example, a temperature about 5 ° C. lower than the cooling set temperature), it is possible to suitably avoid overcooling of the heat medium solution Wc and insufficient heating of the heat medium solution Wh.

Further, when the specified cooling treatment load is smaller than the heat treatment load and the temperature of the outside air is higher than the cooling set temperature and is equal to or higher than the predetermined second temperature (when the "third condition" is satisfied). (1 example), the control unit 6 controls the dual refrigeration cycle 2 and the heat medium liquid circulation path 3 to operate in the second endothermic mode (an example of the “second control mode”). Specifically, as shown in FIG. 4, the control unit 6 controls the on-off valve 17b to the open state, controls the on-off valves 17a, 17c, 17d to the closed state, and minimizes the flow rate adjusting valve 15. The opening degree (closed state) is controlled, and the opening degree required for the flow rate adjusting valve 13 to function as the "expansion valve" of the low temperature side refrigeration circuit 2C is controlled.

As a result, in the low temperature side refrigeration circuit 2C, the low temperature side refrigerant Rc compressed (pushed) by the compressor 11 is sucked into the compressor 11 via the cascade condenser 12, the on-off valve 17b, the flow rate adjusting valve 13, and the evaporator 14. A refrigerant flow path (passing through the evaporator 14 without passing through the heat exchanger 16) is formed (“the lower temperature side refrigerant has a second heat than the amount of passage through which the low temperature side refrigerant passes through the sixth heat exchanger). An example of control that "the first adjusting unit is adjusted so that the amount of passage through the exchanger is larger"). Further, the control unit 6 controls the three-way valve 34 according to the temperature of the heat medium liquid W3 after passing through the heat exchanger 33, and controls the flow rate of the “first flow path” of the heat medium liquid W3 and the “second flow path”. To adjust the flow rate. As a result, the cold / hot simultaneous temperature adjusting device 1 is in a state of operating in the second endothermic mode.

In this second heat absorption mode, in the heat medium liquid circulation path 3, the heat medium liquid W3 has a temperature similar to the temperature of the outside air (a temperature higher than the cooling set temperature) due to heat exchange with the outside air in the heat exchanger 32. Is pumped by the pump 31, and when a part of it is passed through the heat exchanger 33, it is heat-exchanged with the heat medium liquid Wc whose temperature has been raised by the cooling of the cooling target XC. As a result, the temperature of the heat medium liquid Wc is sufficiently raised by cooling the cooling target XC and heat exchange with the heat medium liquid W3, and the temperature of the heat medium liquid W3 is lowered to some extent. The heat medium liquid W3 is heated again to a temperature similar to the temperature of the outside air by exchanging heat with the outside air when it is passed through the heat exchanger 32.

Further, in the low temperature side refrigeration circuit 2C, the high temperature low temperature side refrigerant Rc discharged from the compressor 11 is radiated and condensed in the high temperature side refrigerant Rh in the cascade condenser 12, and the high temperature side refrigerant Rh is evaporated (temperature rise). After passing through the flow rate adjusting valve 13, the condensed low-temperature side refrigerant Rc absorbs heat from the heat medium liquid Wc in the evaporator 14 to raise the temperature. At this time, the heat medium liquid Wc that has absorbed the heat of the heat medium liquid W3 in the heat exchanger 33 is cooled to the cooling set temperature by heat exchange with the low temperature side refrigerant Rc in the evaporator 14. Further, in the high temperature side refrigeration circuit 2H, the high temperature side refrigerant Rh that has been evaporated in the cascade condenser 12 and further raised in temperature by the compression in the compressor 21 dissipates heat to the heat medium liquid Wh in the condenser 22 and condenses it. At the same time, the heat medium solution Wh is heated.

That is, in the second heat absorption mode in which the cooling treatment load is small and the temperature of the outside air is high to some extent, the heat exchanger 32 receives heat from the outside air prior to cooling by the low temperature side refrigeration circuit 2C (evaporator 14). By absorbing the heat absorbed by the heat medium liquid W3 from the heat medium liquid W3 to the heat medium liquid Wc in the heat exchanger 33, the heat of the heat medium liquid Wc is sufficiently absorbed by the low temperature side refrigerant Rc in the evaporator 14. However, it is possible to cool the heat medium liquid Wc to a set cooling temperature without causing overcooling. Further, as a result of being able to sufficiently evaporate the high temperature side refrigerant Rh in the cascade condenser 12 by the amount of heat absorbed in the evaporator 14, the heat medium liquid Wh can be sufficiently heated to the heating set temperature in the condenser 22. It is possible.

When the temperature of the outside air is sufficiently higher than the cooling set temperature during the operation in the second heat absorption mode, the three-way valve 34 reduces the amount of the heat medium liquid W3 passing through the heat exchanger 33 to reduce the low temperature. It is possible to prevent the heat dissipation amount (heat absorption amount from the heat medium liquid W3 to the low temperature side refrigerant Rc) to be excessively large (the temperature of the low temperature side refrigerant Rc rises excessively) with respect to the side refrigeration circuit 2C. Further, when the temperature of the outside air is close to the cooling set temperature, the low temperature side refrigerant Rc is sufficiently supplied in the evaporator 14 by increasing the amount of the heat medium liquid W3 passing through the heat exchanger 33 by the three-way valve 34. A high-temperature heat medium solution Wc that can be vaporized is supplied to the evaporator 14. As a result, the low-temperature heat medium liquid Wc cooled to the cooling set temperature is supplied to the cooling target XC, and the high-temperature heat medium liquid Wh heated to the heating set temperature is supplied to the heating target XH. In this case, the above-mentioned "second temperature", which is one of the discrimination conditions when operating in the second heat absorption mode, is, for example, a temperature exceeding the cooling set temperature and 10 ° C. higher than the cooling set temperature. By defining the temperature within the range up to a slightly higher temperature (for example, a temperature about 5 ° C higher than the cooling set temperature), it is preferable to overcool the heat medium solution Wc and insufficiently heat the heat medium solution Wh. Can be avoided.

On the other hand, it is specified in a usage environment where the temperature difference between the set cooling temperature and the heat medium solution Wc before the cooling treatment is large, or the temperature difference between the set heating temperature and the heat medium solution Wh before the heat treatment is small. The cooling treatment load becomes larger than the heat treatment load (an example when the "fourth condition" is satisfied). Under such a usage environment, the control unit 6 operates the cold / hot simultaneous temperature adjusting device 1 in the heat dissipation mode when the temperature of the outside air is low to some extent (when the “fifth condition” described later is satisfied).

Specifically, when the cooling treatment load is larger than the heat treatment load, the control unit 6 first starts these operations when the pump 31 and the blower 32a are stopped, as shown in FIG. At the same time, the three-way valve 34 is controlled so that the heat medium liquid W3 passes only through the above-mentioned "second flow path" ("the third heat exchange fluid has a higher flow rate than the flow rate of the first flow path of the third heat exchange fluid". An example of control that "the second adjusting unit is adjusted so that the flow rate of the two flow paths is larger"). Further, as an example, the control unit 6 controls the blower 32a so that the temperature of the heat medium liquid W3 immediately after passing through the heat exchanger 32 becomes the same as the temperature of the outside air, and sends the outside air to the heat exchanger 32. Adjust the air volume. As a result, the heat medium liquid W3 having a temperature similar to that of the outside air temperature is pumped by the pump 31.

Further, in a state where the cooling treatment load is large, the temperature of the outside air is lower than the temperature of the heat medium liquid W3 that exchanges heat with the outside air (the temperature of the heat medium liquid W3 at the inlet of the heat exchanger 32). When the temperature is below the temperature (an example when the "fifth condition" is satisfied), the control unit 6 controls the on-off valves 17a and 17d to the open state, and controls the on-off valves 17b and 17c to the closed state. The flow control valve 15 is controlled to the minimum opening (closed state), and the flow control valve 13 is controlled to the opening required to function as the "expansion valve" of the low temperature side refrigeration circuit 2C.

As a result, in the low temperature side refrigeration circuit 2C, the low temperature side refrigerant Rc compressed (pushed) by the compressor 11 is the cascade condenser 12, the on-off valve 17a, the heat exchanger 16, the on-off valve 17d, the flow control valve 13, and the evaporator. A refrigerant flow path (passing through both the evaporator 14 and the heat exchanger 16) sucked into the compressor 11 via 14 is formed (“the low temperature side refrigerant is the second heat exchanger and the sixth heat exchanger). An example of control that "the first adjusting unit adjusts so that it passes through both"). As a result, the cold / hot simultaneous temperature adjusting device 1 is in a state of operating in the heat dissipation mode (an example of the "third control mode").

In this heat dissipation mode, in the heat medium liquid circulation path 3, the heat medium liquid W3 having a temperature similar to the temperature of the outside air due to heat exchange with the outside air in the heat exchanger 32 is pressure-fed by the pump 31 to the heat exchanger 16. Can be passed through. Further, in the low temperature side refrigeration circuit 2C, the high temperature low temperature side refrigerant Rc discharged from the compressor 11 is radiated and condensed in the high temperature side refrigerant Rh in the cascade condenser 12, and the high temperature side refrigerant Rh is evaporated (temperature rise). The condensed low-temperature side refrigerant Rc and the vaporized low-temperature side refrigerant Rc that could not be completely condensed in the cascade condenser 12 due to the large cooling processing load are passed through the heat exchanger 16 via the on-off valve 17a.

At this time, the high-temperature low-temperature side refrigerant Rc in the gas-liquid mixed state is radiated to the heat medium liquid W3 having a temperature similar to that of the outside air in the heat exchanger 16 and sufficiently condensed. Further, the heat medium liquid W3 whose temperature has risen due to heat exchange with the low temperature side refrigerant Rc exchanges heat with the outside air (heat is radiated from the outside air) in the heat exchanger 32, is cooled to the same temperature as the outside air, and then is cooled by the pump 31. It is pumped again. Further, when the low temperature side refrigerant Rc condensed in the heat exchanger 16 is passed through the evaporator 14 via the on-off valve 17d and the flow rate adjusting valve 13, the temperature is raised by heat exchange with the heat medium liquid Wc. Is evaporated and is compressed again by the compressor 11. As a result, the heat medium liquid Wc cooled to the cooling set temperature by heat exchange with the low temperature side refrigerant Rc is supplied to the cooling target XC.

Further, in the high-temperature side refrigeration circuit 2H, the high-temperature high-temperature side refrigerant Rh whose temperature is raised and evaporated by heat exchange with the low-temperature side refrigerant Rc in the cascade condenser 12 and whose temperature is further raised by compression in the compressor 21 is generated. In the condenser 22, the heat is radiated to the heat medium Wh and condensed, and the heat medium Wh is heated. As a result, the heat medium liquid Wh heated to the heating set temperature by heat exchange with the high temperature side refrigerant Rh is supplied to the heating target XH.

That is, in the heat dissipation mode in which the cooling processing load is large and the temperature of the outside air is low to some extent, the heat cannot be dissipated to the high temperature side refrigeration circuit 2H via the cascade condenser 12 in the low temperature side refrigeration circuit 2C. (Heat dissipation that may cause overheating of the heat medium liquid Wh in the high temperature side refrigeration circuit 2H) is radiated to the heat medium liquid W3 in the heat exchanger 16, and this heat is radiated to the outside air via the heat exchanger 32. To. As a result, a sufficient amount of the low temperature side refrigerant Rc required to cool the heat medium Wc to the cooling set temperature in the low temperature side refrigeration circuit 2C without causing overheating of the heat medium liquid Wh in the high temperature side refrigeration circuit 2H. Can be supplied to the evaporator 14.

The above-mentioned "third temperature", which is one of the discrimination conditions when operating in this heat dissipation mode, is a temperature lower than the temperature of the heat medium liquid W3 that exchanges heat with the outside air, and is the heat medium liquid W3. It is defined as a temperature within a range in which a temperature lower than the temperature of about 10 ° C. is a lower limit (for example, a temperature about 5 ° C. lower than the temperature of the heat medium liquid W3 at the inlet of the heat exchanger 32).

As described above, in the cold / temperature simultaneous temperature adjusting device 1, the control unit 6 satisfies the "first condition" that the cooling treatment load is smaller than the heat treatment load, and the temperature of the outside air is equal to or lower than the cooling set temperature. When the "second condition" of the predetermined "first temperature" or lower is satisfied, the flow rate of the "first flow path" of the heat medium liquid W3 and the heat medium liquid W3 according to the cooling set temperature. While adjusting the flow rate of the "second flow path" to the "second adjusting unit", the amount of passage of the low temperature side refrigerant Rc through the heat exchanger 16 is larger than the amount of passage of the low temperature side refrigerant Rc through the evaporator 14. The "first control mode" and the "first condition" are satisfied, and the temperature of the outside air is higher than the cooling set temperature. When the "third condition" of "two temperatures" or higher is satisfied, the flow rate of the "first flow path" of the heat medium solution W3 and the "second flow path" of the heat medium solution W3 according to the set cooling temperature. The amount of passage of the low temperature side refrigerant Rc through the evaporator 14 is larger than the amount of passage of the low temperature side refrigerant Rc through the heat exchanger 16 while adjusting the flow rate of the temperature to the "second adjusting unit". The cold / temperature simultaneous temperature adjusting device 1 is controlled by the "second control mode" to be adjusted by the first adjusting unit.

Therefore, according to this cold / hot simultaneous temperature adjusting device 1, the cooling treatment load is smaller than the heat treatment load, and the outside air is used in a usage environment where overcooling of the heat medium solution Wc and insufficient heating of the heat medium solution Wh may occur. When the temperature of is equal to or lower than the cooling set temperature (when the "second condition" is satisfied), the cold / temperature simultaneous temperature adjusting device 1 is controlled in the "first control mode", and the temperature is exchanged with the outside air. While the heat medium liquid Wc is cooled to the cooling set temperature by the lowered heat medium liquid W3, the heat of the heat medium liquid W3 whose temperature has risen due to the cooling of the heat medium liquid Wc is absorbed by the low temperature side refrigerant Rc in the heat exchanger 16. By absorbing this heat and the heat generated by the compression in the compressor 11 into the high temperature side refrigerant Rh in the cascade condenser 12, the heat medium solution Wh can be sufficiently heated to the heating set temperature in the condenser 22. Further, when the temperature of the outside air is higher than the set cooling temperature (when the "third condition" is satisfied), the cooling / temperature simultaneous temperature adjusting device 1 is controlled in the "second control mode", and the evaporator 14 is used. By absorbing the heat absorbed from the outside air into the heat medium liquid W3 in the heat exchanger 32 from the heat medium liquid W3 to the heat medium liquid Wc in the heat exchanger 33, the heat medium liquid Wc is absorbed in the evaporator 14. Even if the heat is sufficiently absorbed by the low temperature side refrigerant Rc, the heat medium Wc can be cooled to the cooling set temperature without causing overcooling of the heat medium Wc, and the heat is absorbed by the low temperature side refrigerant Rc in the evaporator 14. By absorbing the heat and the heat generated by the compression in the compressor 11 into the high temperature side refrigerant Rh in the cascade condenser 12, the heat medium liquid Wh can be sufficiently heated to the heating set temperature in the condenser 22.

Further, according to the cold / temperature simultaneous temperature adjusting device 1, the control unit 6 makes the “first” such that the low temperature side refrigerant Rc passes through the heat exchanger 16 without passing through the evaporator 14 in the “first control mode”. The heat medium in the evaporator 14 is different from the configuration in which the low temperature side refrigerant Rc is adjusted to pass through both the evaporator 14 and the heat exchanger 16 in the "first control mode" by adjusting the "adjusting unit". Since heat absorption from Wc to the low temperature side refrigerant Rc does not occur, the heat medium is easily controlled to absorb heat from the heat medium liquid W3 in the heat exchanger 16 which is insufficient for the temperature rise of the low temperature side refrigerant Rc due to compression in the compressor 11. The heat medium liquid Wh can be sufficiently heated to the set heating temperature without causing overcooling of the liquid Wc.

Further, according to the cold / hot simultaneous temperature adjusting device 1, the control unit 6 makes the “first” such that the low temperature side refrigerant Rc passes through the evaporator 14 without passing through the heat exchanger 16 in the “second control mode”. The heat medium in the heat exchanger 16 is different from the configuration in which the low temperature side refrigerant Rc is adjusted to pass through both the evaporator 14 and the heat exchanger 16 in the “second control mode” by adjusting to the “adjusting unit”. Since heat absorption from the liquid W3 to the low temperature side refrigerant Rc does not occur, the amount of heat that is insufficient for the temperature rise of the low temperature side refrigerant Rc due to compression in the compressor 11 is absorbed by the heat medium liquid Wc via the heat medium liquid W3 and cooled. By easy control of absorbing heat from the heat medium liquid Wc to the low temperature side refrigerant Rc in the evaporator 14 together with the heat applied by cooling the target XC, the heat medium liquid Wh is heated to the set temperature without causing overcooling of the heat medium liquid Wc. Can be heated sufficiently.

Further, in the cold / temperature simultaneous temperature adjusting device 1, the control unit 6 satisfies the "fourth condition" that the cooling treatment load is larger than the heat treatment load, and the temperature of the outside air is a heat medium that exchanges heat with the outside air. When the "fifth condition" of the predetermined "third temperature" or lower, which is lower than the temperature of the liquid W3, is satisfied, the heat medium liquid W3 is larger than the flow rate of the "first flow path" of the heat medium liquid W3. While adjusting to the "second adjusting unit" so that the flow rate of the "second flow path" is larger, the "first" so that the low temperature side refrigerant Rc passes through both the evaporator 14 and the heat exchanger 16. The cooling / temperature simultaneous temperature adjusting device 1 is controlled by the "third control mode" to be adjusted by the "adjusting unit".

Therefore, according to the cold / hot simultaneous temperature adjusting device 1, the outside air is used in a usage environment where the cooling treatment load is larger than the heat treatment load, which may lead to overheating of the heat medium solution Wh or insufficient cooling of the heat medium solution Wc. When the temperature of the heat medium liquid W3 that exchanges heat with the outside air is lower than the temperature of the heat medium liquid W3 (when the "fifth condition" is satisfied), the cold / temperature simultaneous temperature adjusting device 1 is controlled in the third control mode. The heat that cannot be dissipated to the high temperature side refrigeration circuit 2H via the cascade condenser 12 in the low temperature side refrigeration circuit 2C is dissipated to the heat medium liquid W3 via the heat exchanger 16 and is dissipated to the heat medium liquid W3 in the heat exchanger 32. Since heat is dissipated from the outside air, a sufficient amount of low-temperature side refrigerant Rc necessary for cooling the heat medium liquid Wc to the cooling set temperature without causing overheating of the heat medium liquid Wh in the high-temperature side refrigeration circuit 2H is provided. The heat medium liquid Wc can be sufficiently cooled to the cooling set temperature by supplying it to the evaporator 14.

Further, according to the cold / temperature simultaneous temperature adjusting device 1, the control unit 6 controls the blower 32a that blows the outside air (ambient air) to the heat exchanger 32 to change the amount of the heat exchanger. By adjusting the amount of heat exchange between the heat medium liquid W3 and the outside air (air) in 32, for example, by changing the pumping amount of the heat medium liquid W3 by the pump 31, the heat in the heat exchanger 16 and the heat exchanger 33 is changed. Compared with the configuration in which the exchange amount is changed, the temperature of the heat medium liquid W3 for heat exchange with the low temperature side refrigerant Rc and the heat medium liquid Wc can be adjusted to a desired temperature relatively easily, so that the heat exchanger 16 And the heat exchange amount in the heat exchanger 33 can be reliably and easily controlled to a desired heat exchange amount.

The configuration of the "cold / hot simultaneous temperature adjusting device" is not limited to the above-mentioned example of the configuration of the cold / hot simultaneous temperature adjusting device 1. For example, a configuration in which the cooling treatment load and the heat treatment load are specified based on the condensation temperature of the refrigerant has been described as an example. Refrigerant temperature, refrigerant pressure at any part in the refrigeration circuit, refrigerant temperature difference at any two points in the refrigeration circuit, refrigerant pressure difference at any two points in the refrigeration circuit, per unit time of the electric motor in the refrigerant compressor It is possible to adopt a configuration that specifies based on various parameters such as the amount of power consumption and the temperature of an arbitrary part of the refrigerant compressor. Further, a configuration for specifying the cooling treatment load based on the temperature difference of the heat medium liquid Wc at the inlet and the outlet of the evaporator 14 and the flow rate of the heat medium liquid Wc passing through the evaporator 14 per unit time, and the condenser 22. It is also possible to adopt a configuration in which the heat treatment load is specified based on the temperature difference of the heat medium liquid Wh at the inlet and the outlet of the heat medium and the flow rate of the heat medium liquid Wh passing through the condenser 22 per unit time.

Further, in the "first control mode", the configuration in which the low temperature side refrigerant Rc is allowed to pass through the heat exchanger 16 (sixth heat exchanger) without passing through the evaporator 14 (second heat exchanger) is taken as an example. As explained above, the "low temperature side refrigerant" is within the range that satisfies the condition that "the amount of passage through the sixth heat exchanger is larger than the amount of passage of the low temperature side refrigerant through the second heat exchanger". It is also possible to adopt a configuration that allows both the "second heat exchanger" and the "sixth heat exchanger" to pass through. Similarly, in the "second control mode", the configuration in which the low temperature side refrigerant Rc is allowed to pass through the evaporator 14 without passing through the heat exchanger 16 has been described as an example, but "the low temperature side refrigerant is the sixth heat". The "low temperature side refrigerant" is the "second heat exchanger" and the "sixth heat" within the range satisfying the condition that "the amount of passage through the second heat exchanger is larger than the amount of passage through the exchanger". It is also possible to adopt a configuration that allows both of the "exchangers" to pass through.

Further, the amount of the low temperature side refrigerant Rc passing through the evaporator 14 and the amount of the low temperature side refrigerant Rc passing through the heat exchanger 16 due to the opening / closing of the on-off valves 17a to 17d and the change of the opening degree of the flow rate adjusting valves 13 and 15. Although the configuration for adjusting the above is described as an example, the configuration of the “first adjustment unit” is not limited to this. For example, "flow control valves" are arranged in the "flow path of the low temperature side refrigerant that can pass through the second heat exchanger" and the "flow path of the low temperature side refrigerant that can pass through the sixth heat exchanger", respectively. It is also possible to adopt a configuration in which the "first adjusting unit" is configured and the passing amount of the "low temperature side refrigerant" is adjusted by changing the opening degree of each "flow rate adjusting valve". Further, although the configuration in which the flow rate of the “first flow path” and the flow rate of the “second flow path” of the heat medium liquid W3 are changed by the three-way valve 34 has been described as an example, the configuration of the “second adjustment unit” is described. Not limited to this. For example, a "flow rate adjusting valve" is arranged in each of the "first flow path" and the "second flow path" to form a "second adjusting section", and by changing the opening degree of each "flow rate adjusting valve", " It is also possible to adopt a configuration in which the flow rate of the "first flow path" and the flow rate of the "second flow path" are adjusted.

Further, although an example including a pump 31 composed of a liquid feed pump having a fixed pumping amount has been described, a configuration in which the heat medium liquid W3 is pumped by a liquid feeding pump having a variable pumping amount can also be adopted. Further, a configuration in which a "liquid" such as a heat medium liquid Wc, Wh, W3 is used as the "first heat exchange fluid", the "second heat exchange fluid", and the "third heat exchange fluid" will be described as an example. However, for any or all of the "first heat exchange fluid", "second heat exchange fluid" and "third heat exchange fluid", a configuration using "gas" such as inert gas or air is adopted. You can also do it.

Further, in addition to the control in the "first control mode" (operation in the first endothermic mode) and the control in the "second endothermic mode" (operation in the second endothermic mode), in the "third control mode". The configuration of the cold / temperature simultaneous temperature control device 1 capable of controlling (operation in heat dissipation mode) has been described as an example, but a configuration in which control in the "third control mode" is not performed (operation in heat dissipation mode is not performed) is described. It can also be adopted. Further, the cold / hot simultaneous temperature adjusting device 1 having a configuration using outside air (air around the cold / hot simultaneous temperature adjusting device 1) as an “external heat source” has been described as an example. However, instead of such a configuration, tap water has been described. , Various liquids (water) such as river water, well water and stored water, and snow and ice can also be adopted as an "external heat source". Further, it is also possible to adopt a configuration in which the floor, wall and ceiling of the place where the "simultaneous cooling / temperature adjusting device" is installed and the mechanical equipment that generates heat during operation are used as the "external heat source".

In addition, an example in which a dual refrigeration cycle 2 having a low temperature side refrigeration circuit 2C and a high temperature side refrigeration circuit 2H is provided has been described. It is also possible to configure a "cold temperature simultaneous temperature control device" by providing a "multiple refrigeration cycle" such as a "primary refrigeration cycle". In this case, for example, a "three elements" equipped with three freezing circuits of "low temperature freezing circuit (low stage freezing circuit)", "medium temperature freezing circuit (middle stage freezing circuit)" and "high temperature freezing circuit (high stage freezing circuit)". In the "freezing cycle", when the "low temperature freezing circuit" is changed to the "low temperature side freezing circuit", the "medium temperature freezing circuit" corresponds to the "high temperature side freezing circuit" and the "medium temperature freezing circuit" is changed to the "low temperature side freezing circuit". Sometimes the "high temperature freezing circuit" corresponds to the "high temperature side freezing circuit".

1 Simultaneous cold / hot temperature control device 2 Dual refrigeration cycle 2C Low temperature side refrigeration circuit 2H High temperature side refrigeration circuit 3 Heat medium liquid circulation path 4 Operation unit 5 Display unit 6 Control unit 7 Storage unit 11/21 Compressor 12 Cascade condenser 13, 15 , 23 Flow control valve 14 Evaporator 16, 32, 33 Heat exchanger 17a to 17d On-off valve 22 Condenser 31 Pump 32a Blower 34 Three-way valve LC, LH Heat medium liquid circulation path Rc Low temperature side refrigerant Rh High temperature side refrigerant W3, Wc , Wh Heat Medium Liquid XC Cooling Target XH Heating Target

Claims (5)

It has a low temperature side refrigeration circuit and a high temperature side refrigeration circuit, and the low temperature side refrigerant in the low temperature side refrigeration circuit and the high temperature side refrigerant in the high temperature side refrigeration circuit are configured to be heat exchangeable in the first heat exchanger. The first heat exchange fluid supplied to the cooling target is configured to be coolable in the second heat exchanger of the low temperature side refrigeration circuit, and the second heat exchange fluid supplied to the heating target is of the high temperature side refrigeration circuit. A multi-dimensional refrigeration cycle configured to be heatable in the third heat exchanger,
Simultaneous cooling and temperature control provided with a control unit that controls the operation of the multiple refrigeration cycle according to the cooling set temperature at which the first heat exchange fluid should be cooled and the heating set temperature at which the second heat exchange fluid should be heated. It ’s a device,
A fluid circulation path configured to allow circulation of the third heat exchange fluid,
The fourth heat exchanger, which is arranged to enable heat exchange between the third heat exchange fluid and the external heat source,
The fifth heat is arranged so that heat can be exchanged between the first heat exchange fluid that has cooled the cooling target and the third heat exchange fluid that has exchanged heat with the external heat source in the fourth heat exchanger. With the exchanger,
It is possible to exchange heat between the low temperature side refrigerant that has exchanged heat with the high temperature side refrigerant in the first heat exchanger and the third heat exchange fluid that exchanges heat with the external heat source in the fourth heat exchanger. With the arranged sixth heat exchanger,
The first that adjusts the passing amount of the low temperature side refrigerant that has exchanged heat with the high temperature side refrigerant in the first heat exchanger through the second heat exchanger and the passing amount of the low temperature side refrigerant through the sixth heat exchanger. Adjustment part and
The fourth heat exchanger includes a second adjusting unit for adjusting the passing amount of the third heat exchange fluid that has exchanged heat with the external heat source through the fifth heat exchanger.
The fluid circulation path is a first flow path through which the third heat exchange fluid that has exchanged heat with the external heat source in the fourth heat exchanger passes through the fifth heat exchanger and then through the sixth heat exchanger. And a second flow path through which the third heat exchange fluid passes through the sixth heat exchanger without passing through the fifth heat exchanger.
The second adjusting unit adjusts the flow rate of the first flow path of the third heat exchange fluid and the flow rate of the second flow path of the third heat exchange fluid to adjust the flow rate of the third heat exchange fluid. It is configured so that the passing amount of the 5th heat exchanger can be adjusted.
The control unit is for heating the second heat exchange fluid to the heating set temperature by the cooling processing load of the cooling temperature simultaneous temperature adjusting device for cooling the first heat exchange fluid to the cooling set temperature. The first condition that it is smaller than the heat treatment load of the cold temperature simultaneous temperature adjusting device is satisfied, and the second condition that the temperature of the external heat source is equal to or less than the cooling set temperature and is equal to or less than the predetermined first temperature is satisfied. When this is done, the flow rate of the first flow path of the third heat exchange fluid and the flow rate of the second flow path of the third heat exchange fluid are adjusted by the second adjusting unit according to the cooling set temperature. In the first adjusting unit, the amount of passage of the low temperature side refrigerant through the sixth heat exchanger is larger than the amount of passage of the low temperature side refrigerant passing through the second heat exchanger. The first control mode to be adjusted and
When the first condition is satisfied and the third condition that the temperature of the external heat source is higher than the cooling set temperature and is equal to or higher than the predetermined second temperature is satisfied, the cooling set temperature is satisfied. While adjusting the flow rate of the first flow path of the third heat exchange fluid and the flow rate of the second flow path of the third heat exchange fluid to the second adjusting unit, the low temperature side refrigerant is the sixth heat. The cold and hot simultaneous temperature is adjusted by the first adjusting unit so that the passing amount of the low temperature side refrigerant passes through the second heat exchanger is larger than the passing amount passing through the exchanger. A cold / temperature simultaneous temperature control device that is configured to control the control device. The first aspect of the present invention, wherein the control unit causes the first adjusting unit to adjust the low temperature side refrigerant so as to pass through the sixth heat exchanger without passing through the second heat exchanger in the first control mode. Cold temperature simultaneous temperature control device. The first adjusting unit adjusts the control unit so that the low temperature side refrigerant passes through the second heat exchanger without passing through the sixth heat exchanger in the second control mode. 2. The cooling / temperature simultaneous temperature adjusting device according to 2. The control unit satisfies the fourth condition that the cooling treatment load is larger than the heat treatment load, and the temperature of the external heat source is higher than the temperature of the third heat exchange fluid that exchanges heat with the external heat source. When the fifth condition of a predetermined third temperature or lower is satisfied, the second flow path of the third heat exchange fluid is larger than the flow rate of the first flow path of the third heat exchange fluid. The first adjusting unit is adjusted so that the low temperature side refrigerant passes through both the second heat exchanger and the sixth heat exchanger while adjusting the flow rate of the second adjusting unit to be larger. The cold / hot simultaneous temperature adjusting device according to any one of claims 1 to 3, wherein the cold / hot simultaneous temperature adjusting device is configured to be controllable in a third control mode for adjusting. A blower fan for blowing ambient air as the external heat source to the fourth heat exchanger is provided.
Any of claims 1 to 4, wherein the control unit controls the blower fan to change the blower amount to adjust the heat exchange amount between the third heat exchange fluid and the air in the fourth heat exchanger. The cold and hot simultaneous temperature control device described in Kana.

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