JP7019212B1 - Simultaneous cold and hot temperature control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To normally execute a cooling treatment and a heat treatment even in a usage environment where the cooling treatment load is large / small. SOLUTION: When the first condition that the cooling treatment load is small is satisfied and the second condition that the outside temperature is below the first temperature is satisfied, a third flow path is closed and a heat medium liquid is satisfied. The first control mode in which the flow rates of the first flow path and the second flow path of W3 are adjusted so that the amount of passage of the low temperature side refrigerant Rc through the heat exchanger 16 is increased, and the first condition are satisfied. When the third condition that the outside temperature is the second temperature or higher is satisfied, the third flow path is closed and the flow rates of the first flow path and the second flow path of the heat medium liquid W3 are adjusted. At the same time, when the second control mode in which the low temperature side refrigerant Rc is adjusted so that the amount of passage through the evaporator 14 is large and the fourth condition that the cooling processing load is large are satisfied, the first flow path and the first flow path and It is configured to be controllable by a third control mode in which the second flow path is closed and the heat medium liquid W3 is allowed to flow into the heat exchanger 24. [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 cold / hot 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”) as this kind of simultaneous cooling / temperature adjusting device is disclosed in the following patent documents. 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 lower 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 low-stage circuit and then heated by the condenser of the high-stage circuit, and at the same time, 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, the temperature of the air in the room is lowered in the indoor heat exchanger to cool the room. As described above, in this water heater, 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, heating operation and cooling operation for the purpose of air conditioning only, hot water supply heating operation and hot water supply operation 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 cool the room to the cooling set temperature within the specified time during the hot water supply cooling operation, the first heat exchanger uses the amount of low-stage side refrigerant required for cooling the air in the indoor heat exchanger of the low-stage side circuit. For that purpose, it is necessary to condense a sufficient amount of the high-stage refrigerant in the condenser so that a sufficient amount of the high-stage refrigerant is supplied to the first heat exchanger.

Therefore, during hot water supply cooling operation, when the cooling set temperature is low, when the indoor air is high, and when the room is cooled to the cooling set temperature in a short time (cooling processing load for cooling the room to the cooling set temperature). When the hot water supply (heating) set temperature is low, when the hot water supply water temperature is high, and when the amount of hot water supply water to be heated per unit time is small (heating the hot water supply water to the hot water supply set temperature) When a large amount of low-stage side refrigerant required in the indoor heat exchanger is condensed in the first heat exchanger in an example when the heat treatment load is small), a large amount in the condenser of the high-stage side circuit Due to the condensation of the high-stage side refrigerant, the hot water supply water may be heated to a temperature higher than the hot water supply set temperature. Further, when the hot water supply water is not heated to a temperature higher than the hot water supply set temperature during the hot water supply cooling operation, the required amount of the low stage side refrigerant is used because the amount of evaporation of the high stage side refrigerant in the first heat exchanger is small. 1 It becomes impossible to condense in the heat exchanger, the amount of evaporation of the lower stage refrigerant in the indoor heat exchanger becomes small, it becomes difficult to cool the room to the cooling set temperature, or it is cooled to the cooling set temperature. It may take a long time to do so.

On the contrary, when the hot water supply cooling operation is performed, when the cooling set temperature is high, when the indoor air is low, and when the room is cooled to the cooling set temperature over a long period of time (when the cooling processing load is small). Indoors), when the hot water supply (heating) set temperature is high, when the temperature of the hot water supply water is low, and when the amount of hot water supply water to be heated per unit time is large (an example when the heat treatment load is large). Even if all of the low-stage refrigerant required in the heat exchanger is condensed in the first heat exchanger, the amount of evaporation of the high-stage refrigerant in the first heat exchanger becomes small and the amount of evaporation is small with respect to the condenser. The amount of high-stage refrigerant that can be supplied becomes small, and it may be difficult to sufficiently heat the hot water supply water to the hot water supply set temperature, or it may take a long time to heat the hot water supply water to the hot water supply set temperature. Further, when the hot water supply water is heated to a temperature higher than the set temperature of the hot water supply during the hot water supply cooling operation, the amount of evaporation of the high-stage side refrigerant in the first heat exchanger becomes large, so that a large amount of the low-stage side refrigerant becomes the first. It will be evaporated in the heat exchanger, and the amount of evaporation of the low-stage refrigerant in the indoor heat exchanger will be large, and the room may be cooled to a temperature lower than the cooling set temperature.

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) in the low-stage side circuit (low-temperature side refrigeration circuit) and the cooling in the high-stage side circuit (high-temperature side refrigeration circuit). In the hot water supply cooling operation in which the hot water supply water (second heat exchange fluid) is heated in parallel, it may be difficult to cool to the cooling set temperature or it may take a long time to cool to the cooling set temperature depending on the usage environment. It may be difficult to heat the specified amount of hot water to the set temperature for hot water supply within the specified time.

The present invention has been made in view of the problem to be solved, and either under a usage environment where the cooling treatment load of the first heat exchange fluid is large or under a usage environment where the cooling treatment load of the first heat exchange fluid is small. The main object of the present invention is to provide a cold / temperature simultaneous temperature control device capable of normally cooling the first heat exchange fluid and heating the second heat exchange fluid.

In order to achieve the above object, the cold / hot simultaneous temperature regulator 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 so that the second heat exchange fluid supplied to the heating target can 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 arranged to enable heat exchange between the third heat exchange fluid and the external heat source, the first heat exchange fluid that has cooled the cooling target, and the said. The fifth heat exchanger, which 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 . Heat exchange is possible between the high temperature side refrigerant that exchanges heat with the low 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. The amount of passage of the 7th heat exchanger, the low temperature side refrigerant that exchanged heat with the high temperature side refrigerant in the 1st heat exchanger, and the 6th heat exchanger of the low temperature side refrigerant. The passing amount of the third heat exchange fluid that has exchanged heat with the external heat source in the fourth heat exchanger, the passing amount of the third heat exchanger, and the third heat exchange fluid. The fluid circulation path is provided with a second adjusting unit for adjusting the passing amount of the sixth heat exchanger and the passing amount of the third heat exchange fluid through the seventh heat exchanger, and the fluid circulation path is the fourth heat exchanger. A first flow path in which the third heat exchange fluid that has exchanged heat with the external heat source passes through the fifth heat exchanger, then passes through the sixth heat exchanger, and does not pass through the seventh heat exchanger. The second flow path in which the third heat exchange fluid passes through the sixth heat exchanger without passing through the fifth heat exchanger and does not pass through the seventh heat exchanger, and the third heat exchange fluid The fifth heat exchange It includes a converter and a third flow path that passes through the seventh heat exchanger without passing through the sixth heat exchanger, and the second adjusting unit is the first flow path of the third heat exchange fluid. By adjusting the flow rate of the third heat exchange fluid, the flow rate of the second flow path of the third heat exchange fluid, and the flow rate of the third flow path of the third heat exchange fluid, the fifth heat exchange of the third heat exchange fluid is performed. The passage amount of the device, the passage amount of the third heat exchange fluid through the sixth heat exchanger, and the passage amount of the third heat exchange fluid through the seventh heat exchanger can be adjusted, and the control unit is configured. , The cooling processing 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 adjustment for heating the second heat exchange fluid to the heating set temperature. When the first condition that it is smaller than the heat treatment load of the apparatus 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. , The third flow path is closed by the second adjusting unit, and the flow rate of the first flow path of the third heat exchange fluid according to the cooling set temperature, and the second of the third heat exchange fluid. While adjusting the flow rate of the flow path to the second 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 through the second heat exchanger. A first control mode in which the first adjusting unit is adjusted so that the number of heat is larger, and a predetermined second temperature in which the first condition is satisfied and the temperature of the external heat source is higher than the cooling set temperature. When the above third conditions are satisfied, the third flow path is closed by the second adjusting unit, and the flow rate of the first flow path of the third heat exchange fluid according to the cooling set temperature. And, while adjusting the flow rate of the second flow path of the third heat exchange fluid to the second adjusting unit, the low temperature side refrigerant exceeds the amount of passage of the low temperature side refrigerant through the sixth heat exchanger. The second control mode in which the first adjusting unit adjusts so that the amount of passage through the second heat exchanger is larger, and the fourth condition that the cooling treatment load is larger than the heat treatment load. A third control that causes the second adjusting unit to close the first flow path and the second flow path and allow the third heat exchange fluid to flow into the seventh heat exchanger when the condition is filled. The cold and hot simultaneous temperature control device can be controlled according to the embodiment.

The cold / hot simultaneous temperature adjusting device according to claim 2 comprises a blower fan for blowing ambient air as an external heat source to the fourth heat exchanger in the cold / hot simultaneous temperature adjusting device according to claim 1. The control unit adjusts the amount of heat exchange between the third heat exchange fluid and the air in the fourth heat exchanger by controlling the blower fan to change the amount of blown air.

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 third flow path is closed in the second adjusting unit, and the flow rate of the first flow path of the third heat exchange fluid according to the cooling set temperature, And while adjusting the flow rate of the second flow path of the third heat exchange fluid to the second adjusting unit, the low temperature side refrigerant passes through the sixth heat exchanger than the amount of passage through which the low temperature side refrigerant passes through the second heat exchanger. A first control mode in which the first adjusting unit is adjusted so that the amount of passage through the heat is larger, and a predetermined second temperature in which the first condition is satisfied and the temperature of the external heat source is higher than the cooling set temperature. When the above third conditions are satisfied, the third flow path is closed in the second adjustment unit, and the flow rate of the first flow path of the third heat exchange fluid and the third heat according to the cooling set temperature. While adjusting the flow rate of the second flow path of the exchange fluid to the second adjusting unit, 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. When the second control mode in which the first adjusting unit is adjusted so that the number of heat treatment is larger and the fourth condition that the cooling treatment load is larger than the heat treatment load are satisfied, the first flow path is connected to the second adjustment unit. The cold / hot simultaneous temperature control device is controlled by the third control mode in which the second flow path is closed and the third heat exchange fluid is allowed to flow into the seventh heat exchanger.

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 target fluid or insufficient heating of the second heat exchange target fluid. Under a certain usage 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 control device is controlled in the first control mode to connect with the external heat source. The sixth heat exchange target fluid heat whose temperature has risen due to the cooling of the first heat exchange target fluid while cooling the first heat exchange target fluid to the cooling set temperature by the third heat exchange target fluid whose temperature has dropped due to heat exchange. The heat is absorbed by the low temperature side refrigerant in the heat exchanger, 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 to exchange the second heat in the third heat exchanger. The target fluid can be sufficiently heated to the set heating temperature. Further, in a usage environment where the cooling treatment load is smaller than the heat treatment load and may cause overcooling of the first heat exchange target fluid or insufficient heating of the second heat exchange target fluid, the temperature of the external heat source is the set cooling temperature. When it is higher than (when the third condition is satisfied), the cold / hot simultaneous temperature control device is controlled in the second control mode, and the external heat exchanger is used prior to cooling by the second heat exchanger. By absorbing the heat absorbed from the heat source to the third heat exchange target fluid from the third heat exchange target fluid to the first heat exchange target fluid in the fifth heat exchanger, the first heat exchange target fluid in the second heat exchanger Even if the heat of the low temperature side is sufficiently absorbed by the low temperature side refrigerant, the first heat exchange target fluid can be cooled to the cooling set temperature without causing overcooling of the first heat exchange target fluid, and the temperature is low in the second heat exchanger. By absorbing the heat absorbed by the side refrigerant 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 target fluid in the third heat exchanger is sufficiently heated to the set temperature. Can be heated to. Further, in a usage environment where the cooling treatment load is larger than the heat treatment load and may cause overheating of the second heat exchange target fluid or insufficient cooling of the first heat exchange target fluid, simultaneous cooling and heating are performed in the third control mode. The heat that cannot be dissipated to the second heat exchange target fluid via the third heat exchanger in the high temperature side refrigeration circuit under the control of the temperature controller is transferred to the third heat exchange target fluid via the seventh heat exchanger. Since the heat is dissipated from the third heat exchange target fluid to the external heat source in the fourth heat exchanger, the first heat exchange target fluid does not cause overheating of the second heat exchange target fluid in the high temperature side refrigeration circuit. The second heat exchanger can be supplied with a sufficient amount of low-temperature side refrigerant necessary for cooling to the cooling set temperature, and the first heat exchange target fluid can be sufficiently cooled to the cooling set temperature.

According to the cold / temperature simultaneous temperature adjusting device according to claim 2, the control unit controls a blower fan that blows ambient air as an external heat source to the fourth heat exchanger to change the amount of blown air. 4 By adjusting the amount of heat exchange between the 3rd heat exchange fluid and air in the heat exchanger, for example, by changing the pumping amount of the 3rd heat exchange target fluid by the pump, the 5th heat exchanger and the 6th heat Compared with a configuration in which the amount of heat exchange in the exchanger is changed, it is relatively easy to adjust the temperature of the third heat exchange target fluid to exchange heat with the low temperature side refrigerant or the first heat exchange target fluid to a desired temperature. Therefore, the amount of heat exchange in the fifth heat exchanger and the sixth heat exchanger can be reliably and easily controlled to a desired heat exchange amount.

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, also referred to as a "heating target XH") is supplied with a high-temperature heat medium liquid Wh (an example of a "second heat exchange fluid") via a heat medium liquid circulation path LH and heated. An example of a "cooling target" (hereinafter, also referred to as "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, It is configured to include 17b. 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 and 17b are pressure-fed by the compressor 11 and exchanged heat with the high-temperature side refrigerant Rh in the cascade condenser 12 under 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 cold / 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 and 17b are combined to form a "first adjusting unit".

The high temperature side refrigeration circuit 2H includes a compressor 21, a condenser 22, a flow rate adjusting valve 23, and a heat exchanger 24 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 a “third heat exchanger”, and is a high-temperature side refrigerant Rh pumped by the compressor 21 (discharged from the compressor 21) and a 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. The heat exchanger 24 is an example of the “seventh heat exchanger”, in which the high temperature side refrigerant Rh that exchanges heat with the low temperature side refrigerant Rc in the cascade condenser 12 and the heat medium liquid W3 in the heat medium liquid circulation path 3 ( In the heat exchanger 32 described later, the high temperature side refrigerant Rh is condensed by heat exchange with the heat medium liquid W3) that exchanges heat with the outside air. 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. And the heat exchanger 24 functions as an "auxiliary condenser".

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 includes a pump 31, heat, in addition to the above-mentioned heat exchanger 16 shared with the low-temperature side refrigeration circuit 2C and the above-mentioned heat exchanger 24 shared with the high-temperature side refrigeration circuit 2H. It is configured to include exchangers 32 and 33 and three-way valves 34a and 34b. The pump 31 circulates the heat medium liquid W3 under the control of the control unit 6. In the cold / hot simultaneous temperature control device 1 (heat medium liquid circulation path 3) of this example, as an example, the pump 31 is configured by a liquid feed pump with a fixed pressure feed 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 valves 34a and 34b are examples of the "second adjusting unit", and the amount of heat passed through the heat exchanger 33 of the heat medium liquid W3 that has exchanged heat with the outside air in the heat exchanger 32 under the control of the control unit 6. The amount of passage of the heat medium liquid W3 through the heat exchanger 16 and the amount of passage of the heat medium liquid W3 through the heat exchanger 24 are arranged so as to be adjustable. In this case, in the heat medium liquid circulation path 3 of this example, the heat medium liquid W3 that has exchanged heat with the outside air in the heat exchanger 32 passes through the heat exchanger 33 and then through the heat exchanger 16 and the heat exchanger 24. A "first flow path" that does not pass, a "second flow path" in which the heat medium liquid W3 passes through the heat exchanger 16 without passing through the heat exchanger 33 and does not pass through the heat exchanger 24, and a heat medium liquid. W3 is provided with a "third flow path" that passes through the heat exchanger 24 without passing through the heat exchangers 33 and 16.

Further, in the heat medium liquid circulation path 3 of this example, the three-way valves 34a and 34b follow the control of the control unit 6 and the flow rate of the “first flow path” of the heat medium liquid W3 and the “second flow” of the heat medium liquid W3. By adjusting the flow rate of the "passage" and the flow rate of the "third flow path" of the heat medium solution W3, "the amount of passage of the third heat exchange fluid through the fifth heat exchanger (heat exchanger 33 of the heat medium solution W3)". (Passing amount) ”),“ Passing amount of the third heat exchange fluid through the sixth heat exchanger (passing amount of the heat exchanger 16 of the heat medium liquid W3) ”, and“ Seventh heat exchange of the third heat exchange fluid. A configuration is adopted in which the passage amount of the vessel (passage amount of the heat exchanger 24 of the heat medium liquid W3) is adjusted.

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. Under the control of 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 (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 cooling temperature simultaneous 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 control 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 refrigeration circuit 2C, and the high temperature side refrigerant in the high temperature side refrigeration 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 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 starts pressure feeding of the heat medium liquid W3 by the pump 31 and blowing by the blower 32a, and at the same time, the heat medium liquid W3 passes through the above-mentioned "second flow path" and is "second. The three-way valves 34a and 34b are controlled so as not to pass through the "1st flow path" and the "third flow path". Further, the control unit 6 controls the on-off valve 17a to the open state, controls the on-off valve 17b to the closed state, controls the flow rate adjusting valve 15 to the minimum opening state (closed state), and controls the flow rate adjusting valve. By controlling the opening degree required for the 13 to function as the "expansion valve", the low temperature side refrigerant Rc compressed (pushed) by the compressor 11 is the cascade condenser 12, the on-off valve 17a, the flow rate adjusting valve 13, and the flow rate adjusting valve 13. A refrigerant flow path that is sucked into the compressor 11 via the evaporator 14 is formed.

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 and evaporated by the heat absorption in the cascade condenser 12 and whose temperature is further raised by the compression in the compressor 21 is radiated and condensed in the heat medium liquid Wh in the condenser 22. 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 heating set 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 may use the heat medium liquid W3 or the low temperature. The flow path of the side refrigerant Rc 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 valves 34a and 34b are controlled so that the heat medium liquid W3 passes through both the above-mentioned "first flow path" and the "second flow path" and does not pass through the "third flow path". (An example of control that "closes the third flow path to the second adjusting unit"). 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 valve 17a to the closed state, controls the on-off valve 17b to the open state, and closes the flow rate adjusting valve 13 to the minimum opening (closed). The state) is controlled, and the opening degree required for the flow rate adjusting valve 15 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 flow rate adjusting valve 15, the heat exchanger 16 and the on-off valve 17b. A refrigerant flow path (passing through the heat exchanger 16 without passing through the evaporator 14) is formed (“the low temperature side refrigerant passes through the second heat exchanger 16). An example of control that "the first adjusting unit is adjusted so that the amount of passage through the heat exchanger is larger"). Further, the control unit 6 controls the three-way valves 34a and 34b 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”. Adjust the flow rate of the "flow path". 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 supercooling occurs, so that the heat medium liquid Wc is set to the cooling set temperature. While cooling (without supercooling), the heat medium solution Who can be sufficiently heated to the set heating temperature.

In this case, in the cold / temperature simultaneous temperature adjusting device 1 of this example, a heat exchanger 24 capable of heat exchange between the heat medium liquid Wh and the heat medium liquid W3 is arranged in the high temperature side refrigeration circuit 2H, and the high temperature is high. During the operation of the side refrigeration circuit 2H, the high temperature side refrigerant Rh compressed (pushed) by the compressor 21 is passed through the heat exchanger 24 after being passed through the condenser 22, and the flow control valve 23 and The state of being sucked into the compressor 21 via the cascade condenser 12 is maintained. However, in the state of being shifted to the first heat absorption mode or the second heat absorption mode, the three-way valves 34a and 34b are controlled so that the heat medium liquid W3 does not pass through the "third flow path" as described above. Therefore, since the heat medium liquid W3 is not supplied to the heat exchanger 24, the temperature of the heat medium liquid Wh does not change significantly due to heat exchange with the heat medium liquid W3 in the heat exchanger 24.

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 amount of the heat medium liquid W3 passing through the heat exchanger 33 is reduced by the three-way valves 34a and 34b. Prevents overcooling of the heat 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 by increasing the amount of the heat medium liquid W3 passing through the heat exchanger 33 by the three-way valves 34a and 34b. Cool sufficiently to the cooling set temperature). As a result, the low-temperature heat medium solution Wc cooled to the cooling set temperature is supplied to the cooling target XC, and the high-temperature heat medium solution 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). (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 17a to the open state, controls the on-off valve 17b to the closed state, and closes the flow rate adjusting valve 15 to the minimum opening (closed). The 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 17a, 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 valves 34a and 34b 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”. Adjust the flow rate of the "flow path". 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 amount of heat medium liquid W3 passing through the heat exchanger 33 is reduced by the three-way valves 34a and 34b. 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) excessively large (the temperature of the low temperature side refrigerant Rc rises excessively) with respect to the low temperature 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 increased in the evaporator 14 by increasing the amount of the heat medium liquid W3 passing through the heat exchanger 33 by the three-way valves 34a and 34b. The evaporator 14 is supplied with a high-temperature heat medium solution Wc that can be sufficiently evaporated. As a result, the low-temperature heat medium solution Wc cooled to the cooling set temperature is supplied to the cooling target XC, and the high-temperature heat medium solution 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 or 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 and when the temperature of the outside air is low to some extent, the control unit 6 operates the cold / temperature simultaneous temperature adjusting device 1 in the heat dissipation mode.

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 heat medium liquid W3 passes through the "third flow path" without passing through both the above-mentioned "first flow path" and the "second flow path" (the heat medium liquid W3 is the "third flow". Control the three-way valves 34a and 34b (so that they pass only through the "passage") ("close the first and second flow paths in the second adjustment section, and go to the seventh heat exchanger of the third heat exchange fluid." An example of control that "allows the inflow of heat"). As a result, the heat medium liquid W3 is in a state of being able to pass through the heat exchanger 24 of the high temperature side refrigeration circuit 2H. 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, a predetermined temperature (hereinafter referred to as a predetermined temperature) in which the cooling treatment load is large and 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). , Also referred to as "third temperature"), the control unit 6 controls the on-off valve 17a to the open state, controls the on-off valve 17b to the closed state, and sets the flow control valve 15 to the minimum opening state. It is controlled to (closed state), and the opening degree required for the flow control 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 (pressed) by the compressor 11 is sucked into the compressor 11 via the cascade condenser 12, the on-off valve 17a, the flow rate adjusting valve 13, and the evaporator 14. A refrigerant flow path is formed. Further, in the high temperature side refrigeration circuit 2H, as described above, the high temperature side refrigerant Rh compressed (pushed) by the compressor 21 is compressed via the condenser 22, the heat exchanger 24, the flow rate adjusting valve 23, and the cascade condenser 12. It is in a state of being sucked by the machine 21. 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 33. And heat exchanger 16 are not allowed to pass through, but only the heat exchanger 24 is allowed to pass through. Further, in the high temperature side refrigeration circuit 2H, the high temperature side refrigerant Rh discharged from the compressor 21 dissipates heat to the heat medium liquid Wh in the condenser 22 and is condensed, and at the same time, the heat medium liquid 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.

Further, when the high temperature side refrigerant Rh condensed in the condenser 22 and the vaporized high temperature side refrigerant Rh not completely condensed in the condenser 22 are passed through the heat exchanger 24, the temperature is about the same as the outside air temperature. The heat is dissipated to the heat medium liquid W3 at the temperature of the above and is sufficiently condensed. As a result, a sufficient amount of the high temperature side refrigerant Rh is supplied to the cascade capacitor 12. Further, the heat medium liquid W3 whose temperature has risen due to heat exchange with the high temperature side refrigerant Rh 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, the high temperature side refrigerant Rh supplied to the cascade condenser 12 is raised in temperature by heat exchange with the low temperature side refrigerant Rc, evaporated, and sucked into the compressor 21.

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). Be done. At this time, as described above, a sufficient amount of the high temperature side refrigerant Rh is supplied to the cascade condenser 12 in the high temperature side refrigeration circuit 2H. Therefore, in the usage environment of this example in which it is necessary to supply a large amount of the low temperature side refrigerant Rc to the evaporator 14 due to the large cooling processing load, the required low temperature side refrigerant Rc is sufficiently provided in the cascade condenser 12. It is possible to condense.

Further, when the low temperature side refrigerant Rc condensed in the cascade condenser 12 is passed through the evaporator 14 through the flow rate adjusting valve 13, the temperature is raised by heat exchange with the heat medium liquid Wc and the refrigerant is vaporized. It 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.

That is, in the heat dissipation mode in which the cooling treatment load is large and the temperature of the outside air is low to some extent, the heat that cannot be dissipated to the heat medium liquid Wh via the condenser 22 in the high temperature side refrigeration circuit 2H ( The heat radiation that may cause overheating of the heat medium liquid Wh) is radiated to the heat medium liquid W3 in the heat exchanger 24, and this heat is radiated to the outside air via the heat exchanger 32. As a result, a sufficient amount of the low temperature side refrigerant Rc required to cool the heat medium liquid 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. Heat exchange is performed by specifying a temperature within the range of the lower limit of a temperature about 10 ° C. lower than the temperature of the above (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). The heat of the high temperature side refrigerant Rh can be sufficiently dissipated in the vessel 24.

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 "first temperature" or lower specified in advance is satisfied, the "third flow path" is closed in the "second adjusting unit", and the heat medium is set according to the cooling set temperature. The low temperature side refrigerant Rc passes through the evaporator 14 while adjusting the flow rate of the "first flow path" of the liquid W3 and the flow rate of the "second flow path" of the heat medium liquid W3 to the "second adjusting unit". The "first control mode" and the "first condition" for adjusting the low temperature side refrigerant Rc to the "first adjusting unit" so that the amount of passage through the heat exchanger 16 is larger than the amount are satisfied. Moreover, when the "third condition" that the temperature of the outside air is higher than the cooling set temperature and is equal to or higher than the predetermined "second temperature" is satisfied, the "third flow path" is added to the "second adjusting unit". While closing and adjusting the flow rate of the "first flow path" of the heat medium solution W3 and the flow rate of the "second flow path" of the heat medium solution W3 according to the cooling set temperature, the "second adjustment unit" A "second control mode" in which the "first adjusting unit" is adjusted so that 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. When the "fourth condition" that the cooling treatment load is larger than the heat treatment load is satisfied, the "second adjustment unit" closes the "first flow path" and the "second flow path". In addition, the cooling / temperature simultaneous temperature adjusting device 1 is controlled by the "third control mode" that allows the heat medium liquid W3 to flow into the heat exchanger 24.

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 cooling treatment load is smaller than the heat treatment load and the temperature of the outside air is higher than the set cooling temperature in a usage environment where overcooling of the heat medium liquid Wc or insufficient heating of the heat medium liquid Wh may occur ( When the "third condition" is satisfied), the cold / hot simultaneous temperature adjusting device 1 is controlled in the "second control mode", and the heat medium is transmitted from the outside air in the heat exchanger 32 prior to cooling by the evaporator 14. By absorbing the heat absorbed by the liquid W3 from the heat medium liquid W3 to the heat medium liquid Wc in the heat exchanger 33, even if the heat of the heat medium liquid Wc is sufficiently absorbed by the low temperature side refrigerant Rc in the evaporator 14, the heat is generated. The heat medium liquid Wc can be cooled to the cooling set temperature without causing overcooling of the medium liquid Wc, and the heat absorbed by the low temperature side refrigerant Rc in the evaporator 14 and the heat generated by the compression in the compressor 11 are combined. By absorbing heat in 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, in a usage environment where the cooling treatment load is larger than the heat treatment load and there is a risk of overheating of the heat medium solution Wh or insufficient cooling of the heat medium solution Wc, simultaneous cooling / temperature temperature adjustment in the "third control mode". The device 1 is controlled, and the heat that cannot be dissipated to the heat medium liquid Wh via the condenser 22 in the high temperature side refrigeration circuit 2H is dissipated to the heat medium liquid W3 via the heat exchanger 24 and is a heat exchanger. Since the heat is radiated from the heat medium liquid W3 in 32, a sufficient amount required to cool 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. The low-temperature side refrigerant Rc can be sufficiently cooled to the cooling set temperature by supplying the evaporator 14 with the heat medium liquid Wc.

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 heat blown to 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 can be used. 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 and 17b 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, a configuration in which the flow rate of the "first flow path", the flow rate of the "second flow path", and the flow rate of the "third flow path" of the heat medium liquid W3 are changed by the three-way valves 34a and 34b will be described as an example. However, the configuration of the "second adjustment unit" is not limited to this. For example, a "flow rate adjusting valve" is arranged in each of the "first flow path", "second flow path", and "third flow path" to form a "second adjusting section", and each "flow rate adjusting valve". It is also possible to adopt a configuration in which the flow rate of the "first flow path", the flow rate of the "second flow path", and the flow rate of the "third flow path" are adjusted by changing the opening degree of.

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, not only the control in the "third control mode" (operation in the heat dissipation mode), but also the control in the "first control mode" (operation in the first endothermic mode) and the "second control mode". Although the configuration of the cold / temperature simultaneous temperature adjusting device 1 capable of control (operation in the second endothermic mode) has been described as an example, control is performed in the "first control mode" and / or the "second control mode". It is also possible to adopt a configuration that does not (do not operate in the first endothermic mode or the second endothermic mode). 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 refrigeration circuits, "low temperature refrigeration circuit (low stage refrigeration circuit)", "medium temperature refrigeration circuit (middle stage refrigeration circuit)" and "high temperature refrigeration circuit (high stage refrigeration circuit)". In the "refrigeration cycle", when the "low temperature refrigeration circuit" is set to the "low temperature side refrigeration circuit", the "medium temperature refrigeration circuit" corresponds to the "high temperature side refrigeration circuit" and the "medium temperature refrigeration circuit" is set to the "low temperature side refrigeration circuit". Sometimes the "high temperature refrigeration circuit" corresponds to the "high temperature side refrigeration 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 refrigerant 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, 17b On-off valve 22 Condenser 24 Heat exchanger 31 Pump 32a Blower 34a, 34b 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 (2)

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 for cooling the first heat exchange fluid and the heating set temperature for heating the second heat exchange fluid. 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,
Heat exchange is possible between the high temperature side refrigerant that exchanges heat with the low 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 7th 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 amount of passage 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 amount of passage of the third heat exchange fluid through the sixth heat exchanger, and the said. A second adjusting unit for adjusting the passing amount of the third heat exchange fluid through the seventh heat exchanger is provided.
In the fluid circulation path, 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 seventh. The first flow path that does not pass through the heat exchanger and the third heat exchange fluid pass through the sixth heat exchanger without passing through the fifth heat exchanger and do not pass through the seventh heat exchanger. It is provided with two flow paths and a third flow path through which the third heat exchange fluid passes through the seventh heat exchanger without passing through the fifth heat exchanger and the sixth heat exchanger.
The second adjusting unit includes the flow rate of the first flow path of the third heat exchange fluid, the flow rate of the second flow path of the third heat exchange fluid, and the third flow path of the third heat exchange fluid. By adjusting the flow rate of the third heat exchange fluid, the amount of passage of the third heat exchange fluid through the fifth heat exchanger, the amount of passage of the third heat exchange fluid through the sixth heat exchanger, and the amount of the third heat exchange fluid of the third heat exchange fluid. The 7th heat exchanger is configured to allow the passage amount to 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 the temperature is smaller than the heat treatment load of the cold temperature simultaneous temperature regulator 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 third flow path is closed by the second adjusting unit, and the flow rate of the first flow path of the third heat exchange fluid according to the cooling set temperature, and the third heat exchange fluid. While adjusting the flow rate of the second flow path to the second adjusting unit, the low temperature side refrigerant passes through the sixth heat exchanger rather than the amount of passage through which the low temperature side refrigerant passes through the second heat exchanger. The first control mode in which the first adjusting unit is adjusted so that the passing amount to be passed is larger, and the first control mode.
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 second adjusting unit is subjected to the above. The second flow path is closed, and 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 set according to the cooling set temperature. While adjusting to the adjusting unit, the amount of passage of the low temperature side fluid through the second heat exchanger is larger than the amount of passage of the low temperature side fluid through the sixth heat exchanger. 1 The second control mode to be adjusted by the adjustment unit, and
When the fourth condition that the cooling treatment load is larger than the heat treatment load is satisfied, the first flow path and the second flow path are closed by the second adjusting unit, and the third heat is generated. A cold / hot simultaneous temperature adjusting device configured to be able to control the cold / hot simultaneous temperature adjusting device according to a third control mode for allowing the exchange fluid to flow into the seventh heat exchanger. A blower fan for blowing ambient air as the external heat source to the fourth heat exchanger is provided.
The cold and hot simultaneous according to claim 1, 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. Temperature regulator.

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