JP2016014493A - Cold and hot water air-conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cold and hot water air-conditioning system capable of suppressing the generation of dew condensation similarly to conventional systems and reducing cost as compared with the conventional systems.SOLUTION: Control means 6 controls each flow regulating valve 4 to be closed not to pass a hydrothermal medium through each radiator 3 set to be able to operate only in a heating operation active mode in a cooling operation active mode, and permits the heating operation active mode to be switched to the cooling operation active mode on condition that all the flow regulating valves 4 are closed if receiving an indication to switch from the heating operation active mode to the cooling operation active mode from operation means 51 in the heating operation active mode; or controls each flow regulating valve 4 to be closed not to pass the hydrothermal medium through each radiator 3 set to be able to operate only in the cooling operation active mode in the heating operation active mode, and permits the cooling operation active mode to be switched to the heating operation active mode on condition that all the flow regulating valves 4 are closed if receiving an indication to switch from the cooling operation active mode to the heating operation active mode from the operation means 51 in the cooling operation active mode.

Description

  The present invention relates to a cold / hot water air conditioning system.

  In general, in a cold / hot water air conditioning system, a single heat source unit generates hot water or cold water by heating or cooling a water heat medium such as antifreeze liquid, which is then used for floor heating panels and other radiation radiators (panel heaters, etc.) Or it circulates to the air conditioner provided with the heat exchanger for heat radiation, such as a fan coil unit (fan convector etc.), and air-conditions surrounding space.

  Here, in the case where the air conditioner is configured by a radiation radiator that performs the heating and cooling function and a floor heating panel that performs only the heating function, the floor heating panel that performs only the heating function during cooling is subjected to water heat. If the medium is allowed to pass, condensation will occur on the floor and under the floor, impairing the life of the house.

  By the way, in a conventional water-type air conditioning system in which an air conditioner that performs an air conditioning function (for example, a fan coil unit) and an air conditioner that performs only a heating function (for example, a floor heating panel) are connected in parallel, There was a water type air conditioning system provided with a switch (for example, patent documents 1).

  The water-type air conditioning system described in Patent Document 1 is configured so that when the water temperature of the hydrothermal medium is lower than the temperature (for example, room temperature) at a place where condensation is likely to occur, the cold water is not allowed to pass through the floor heater or the panel heater. The on-off valve on the air conditioner side that performs only the function is closed.

Japanese Patent No. 4421783 (page 4, page 5, FIG. 1)

  However, the water-type air conditioning system described in Patent Document 1 includes a water heat medium circulation circuit that connects a heat source unit and an air conditioning unit that is also used for cooling and heating, a water heat medium circulation circuit that connects a heat source unit and a heating-only air conditioner, Must be provided independently, and an open / close valve must be provided on the side of the water heating medium circulation circuit to which an air conditioner dedicated to heating is connected. For this reason, the additional member was required in order to construct the water-heat-medium circulation circuit only for heating, and there existed a subject that cost increased.

  The present invention has been made against the background of the above-described problems, and an object thereof is to obtain a cold / hot water air conditioning system capable of suppressing the occurrence of condensation as in the conventional case and reducing the cost as compared with the conventional case. .

  The cold / hot water air conditioning system of the present invention includes a hydrothermal medium circulating circuit through which a hydrothermal medium passes, a heat source device that is provided on the hydrothermal medium circulating circuit and that heats or cools the hydrothermal medium, and the hydrothermal medium circulation A plurality of radiators that are provided on a circuit and into which a water heating medium flowing out from the heat source device flows, and a plurality of radiators that are provided on the water heating medium circulation circuit corresponding to the plurality of radiators, respectively. Based on flow rate adjustment valve for adjusting the amount of the water heat medium flowing into the operation means, operation means, operation start of the radiator, operation stop of the radiator, room temperature control, water temperature control output from the operation means Control means for controlling the flow rate regulating valve, and the plurality of radiators are radiators for heating operation capable of flowing only a heated hydrothermal medium, and cooling operations capable of flowing only a cooled hydrothermal medium. A cooler that can flow in both a dedicated radiator and a heated and cooled water heating medium. It is configured to function as a radiator for operation and heating operation, and on the water heating medium circulation circuit, the radiator for exclusive use of the heating operation, the radiator for exclusive use of the cooling operation or the radiator for combined use of the cooling operation and heating operation, and , There are one or more of each, a state where there is one or more of the cooling operation dedicated radiator and the heating operation dedicated radiator or the cooling operation heating operation combined use radiator, or the cooling operation heating There are two or more heat sinks that can be used for both operation, and the control means can be operated only in one of the heating operation mode and the cooling operation mode, or can be operated in either the heating operation mode or the cooling operation mode. Each of the plurality of radiators is set so as to be possible, and the heat exchanger is set to be operable only in the heating operation mode. The flow control valve is controlled to be closed so that it does not exceed, and when there is an instruction from the operation means to switch to the cooling operation mode in the heating operation mode, all of the flow control valves are closed. As a condition, switching to the operation mode of the cooling operation is allowed, or the radiator set so as to be operable only in the operation mode of the cooling operation so that the water heating medium does not pass in the operation mode of the heating operation. When the operation means is instructed to switch to the heating operation mode in the cooling operation mode, the flow control valve is controlled to be closed under the condition that all of the flow control valves are closed. Switching to the operation mode is allowed.

  According to the present invention, the control means can operate only in one of the heating operation mode and the cooling operation mode, or can operate in any one of the heating operation mode and the cooling operation mode. The flow control valve is closed and controlled so that the hydrothermal medium does not pass through the radiator that is set to be operable only in the heating mode. In the mode, when the operation means instructs to switch to the cooling operation mode, switching to the cooling operation mode is permitted on condition that all the flow rate adjustment valves are closed, or the cooling operation is performed. The flow control valve is closed and controlled so that the hydrothermal medium does not pass through the radiator set to be operable only in the mode in the heating operation mode. If the instruction to switch to the operating mode of the heating operation was from the operating means in the over-de, all of the flow control valve is to permit the switch to the operating mode of the heating operation on condition that they are closed. For this reason, it is possible to perform the heating operation and the cooling operation so as to suppress the occurrence of condensation without providing a plurality of water heat medium circulation circuits. Therefore, the occurrence of condensation can be suppressed as in the conventional case, and the cost can be reduced as compared with the conventional case.

It is a figure which shows the system configuration | structure of the cold / hot water air conditioning system 100 which concerns on Embodiment 1 of this invention. It is a figure which shows the structure of the remote control 5 of the cold / hot water air conditioning system 100 which concerns on Embodiment 1 of this invention. It is a flowchart of the initial setting of the cold / hot water air conditioning system 100 which concerns on Embodiment 1 of this invention. It is a figure which shows an example of the screen displayed on the remote control 5 of the cold / hot water air conditioning system 100 which concerns on Embodiment 1 of this invention. It is a figure which shows an example of the screen displayed on the remote control 5 of the cold / hot water air conditioning system 100 which concerns on Embodiment 1 of this invention. It is a figure which shows an example of the screen displayed on the remote control 5 of the cold / hot water air conditioning system 100 which concerns on Embodiment 1 of this invention.

  Below, the cold / hot water air conditioning system 100 which concerns on this invention is demonstrated in detail based on drawing. In the following drawings, the size relationship of each component may be different from the actual one. In the following drawings, the same reference numerals denote the same or corresponding parts, and this is common throughout the entire specification. Furthermore, the forms of the constituent elements shown in the entire specification are merely examples, and are not limited to these descriptions.

Embodiment 1 FIG.
FIG. 1 is a diagram showing a system configuration of a cold / hot water air conditioning system 100 according to Embodiment 1 of the present invention. As shown in FIG. 1, the cold / hot water air conditioning system 100 includes a heat source unit 1, a hydrothermal medium circulation circuit 2, radiators 3a, 3b, 3c, flow rate adjusting valves 4a, 4b, 4c, a remote controller 5a, 5b, 5c and control means 6.

  The heat source device 1 heats or cools the water heat medium. As the hydrothermal medium, general tap water or a dedicated liquid whose components are adjusted, such as an antifreeze liquid or a rust inhibitor, is used. FIG. 1 shows a heat source unit 1 that is assumed to be a heat pump type, but the heat source unit 1 is combined with a unit that heats a hydrothermal medium by burning fossil fuel such as kerosene or gas. It may be.

  The water heating medium circulation circuit 2 is composed of, for example, a copper pipe, a steel pipe, or a resin pipe, and a heat insulating material is wound around the copper pipe, the steel pipe, or the resin pipe. Thereby, the heat dissipation loss which occurs before the water heat medium flowing through the water heat medium circulation circuit 2 reaches the radiator 3 can be suppressed. The water heating medium circulation circuit 2 is provided with a flow rate adjusting valve 4.

  The radiators 3a, 3b, and 3c are heat exchangers that perform heat dissipation or heat absorption to the air conditioning chamber, and are provided in parallel, for example. The radiators 3a, 3b, 3c are configured by a radiation radiator such as a floor heating panel or a panel heater, or a fan coil unit such as a fan convector. In the following description, the radiators 3a, 3b, and 3c may be collectively referred to as the radiator 3.

  The flow rate adjusting valves 4a, 4b, and 4c are valves for adjusting the amount of the water heat medium flowing into the radiator 3 among the water heat medium flowing out from the heat source unit 1. The flow rate adjusting valve 4a is provided on the inlet side of the radiator 3a, for example, and adjusts the amount of the hydrothermal medium flowing into the radiator 3a among the hydrothermal medium flowing out from the heat source unit 1. The flow rate adjusting valve 4b is provided on the inlet side of the radiator 3b, for example, and adjusts the amount of the hydrothermal medium flowing into the radiator 3b among the hydrothermal medium flowing out from the heat source unit 1. The flow rate adjustment valve 4c is provided on the inlet side of the radiator 3c, for example, and adjusts the amount of the hydrothermal medium flowing into the radiator 3c among the hydrothermal medium flowing out from the heat source unit 1. In the following description, the flow rate adjustment valves 4a, 4b, and 4c may be collectively referred to as the flow rate adjustment valve 4.

  The flow rate adjustment valve 4 may be built in the heat source device 1 or may be attached in the vicinity of the heat source device 1. By providing the flow rate adjusting valve 4 in this way, it is possible to further limit the range through which the chilled water flows during the cooling operation, and to reduce the possibility of condensation in the water heating medium circulation circuit 2 and the radiator 3. The possibility of adversely affecting the building can be reduced.

  The remote controllers 5a, 5b, and 5c are provided, for example, in a space to be air-conditioned (air-conditioning room). When various keys of the remote controllers 5a, 5b, 5c are operated, information (signals) corresponding to the operated keys is output. For example, the remote controller 5a corresponds to the radiator 3a and the flow rate adjustment valve 4a. Further, for example, the remote controller 5b corresponds to the radiator 3b and the flow rate adjustment valve 4b. Further, for example, the remote controller 5c corresponds to the radiator 3c and the flow rate adjustment valve 4c. In the following description, the remote controllers 5a, 5b, and 5c may be collectively referred to as the remote controller 5.

  The control unit 6 controls the operation of the heat source unit 1, the flow rate adjustment valve 4, and the display unit 52 based on, for example, information (signal) output from the remote controller 5. Here, “information (signal) output from the remote controller 5” includes, for example, an instruction to start the operation of the radiator 3, an instruction to stop the operation of the radiator 3, an instruction to control the room temperature, and a water temperature. Refers to information about instructions. For example, the control means 6 throttles the flow rate adjustment valve 4 when the operation of the radiator 3 is stopped or when the room temperature reaches a set temperature. Thereby, the amount of the water heat medium flowing through the water heat medium circulation circuit 2 flowing into the radiator 3 can be reduced (eliminated). The control means 6 is configured by, for example, hardware such as a circuit device that realizes this function, or software executed on an arithmetic device such as a microcomputer or a CPU.

  Moreover, in the above description, although the example in which the heat radiator 3, the flow volume adjustment valve 4, and the remote control 5 were each provided was demonstrated, it is not limited to this. For example, more than three radiators 3, flow rate adjustment valves 4, and remote controllers 5 may be provided.

Below, the flow of the hydrothermal medium of the cold / hot water air conditioning system 100 is demonstrated.
The water heat medium is heated or cooled by the heat source device 1 and is conveyed (inflows) to the radiator 3 through the water heat medium circulation circuit 2. The water heating medium conveyed (inflowed) to the radiator 3 radiates or absorbs heat by exchanging heat in the radiator 3, passes through the water heating medium circulation circuit 2 again, and returns to the heat source unit 1. As described above, when the cold / hot water air conditioning system 100 is operated, a cycle in which the hydrothermal medium is heated or cooled through the heat source unit 1, the hydrothermal medium circulation circuit 2, and the radiator 3 is repeated.

  FIG. 2 is a diagram showing the configuration of the remote controller 5 of the cold / hot water air conditioning system 100 according to Embodiment 1 of the present invention. As shown in FIG. 2, the remote controller 5 is an operation display unit having an operation unit 51 and a display unit 52.

  The operation means 51 is an operation unit for performing various settings, and includes a return key 51a, a down key 51b, an up key 51c, an enter key 51d, a menu key 51e, a secret key 51f, and a timer key 51g. And an operation stop key 51h. The operation means 51 is composed of, for example, a push button type or a touch panel type.

  By operating the operation means 51, operation / stop of the heat source unit 1, on / off of the timer operation, on / off of the hikering operation, adjustment of the set room temperature, adjustment of the set water temperature, change of the system setting by the menu function, etc. It can be performed. In addition, the above-mentioned hikarie operation refers to an operation in which operation is performed at a slightly lower water temperature in the case of hot water and operation is performed at a slightly higher water temperature in the case of cold water.

  The display means 52 is a display unit for displaying (notifying) various information to the user. The display unit 52 is configured by, for example, an LCD (Liquid Crystal Display). The display unit 52 displays information corresponding to the operation of the operation unit 51, and is controlled by the control unit 6, for example.

  FIG. 3 is a flowchart of initial setting of the cold / hot water air conditioning system 100 according to Embodiment 1 of the present invention. When the heat source device 1 and the remote controller 5 are connected by electrical wiring and the power is turned on to the heat source device 1, the control means 6 determines whether or not the initial setting is performed. Here, the initial setting refers to the processing of steps S1, S2, and S3 of FIG. 3, and is performed before the construction of the cold / hot water air conditioning system is completed and the air conditioning operation is started. In the initial setting, each of the plurality of radiators 3 is set so that it can be operated only in one of the heating operation mode and the cooling operation mode, or can be operated in any of the heating operation mode and the cooling operation mode. .

  When determining that the initial setting has already been performed, the control unit 6 causes the display unit 52 to display a screen displayed on the display unit 52 after the end of the initial setting, for example. When it is determined that the initial setting has not been performed yet, the control unit 6 proceeds to step S1.

  In step S <b> 1, the control unit 6 causes the display unit 52 to display a screen for assigning an address to the remote controller 5. In step S1, the user selects an address to be assigned to the remote controller 5 being operated from the plurality of addresses displayed on the display means 52, and the process proceeds to step S2.

  In step S <b> 2, the control unit 6 causes the display unit 52 to display a screen for setting the output number of the flow rate adjusting valve 4. In step S2, the user sets the output number of the flow rate adjusting valve 4 for the remote controller 5 being operated, and the process proceeds to step S3. The remote controller 5 and the radiator 3 are associated with each other by performing the process in step S2.

  In step S <b> 3, the control unit 6 causes the display unit 52 to display a screen for determining an operation mode in which the operation of the radiator 3 associated with the remote controller 5 being operated is performed. Here, there are three operation modes in which the radiator 3 is operated, for example, “only for heating”, “only for cooling”, and “for both cooling and heating”. And in step S3, a user determines the operation mode which performs the driving | operation of the heat radiator 3 linked | related with the remote control 5 in operation, and an initial setting is complete | finished. By performing the initial setting in this way, air conditioning operation / stop of the air conditioning room or room temperature setting can be performed. Only the heated hydrothermal medium flows into the radiator set as “heating only”. The radiator set as “only for heating” corresponds to the “only radiator for heating operation” of the present invention. Only the cooled hydrothermal medium flows into the radiator set as “only for cooling”. The radiator set as “only for cooling” corresponds to the “only radiator for cooling operation” of the present invention. Any of the heated and cooled hydrothermal medium flows into the radiator set as “cooling and heating combined”. The radiator set as “air-conditioning combined use” corresponds to the “air-conditioning / heating operation combined use radiator” of the present invention.

  When the radiator 3 is set exclusively for heating, the control means 6 closes the flow rate adjustment valve 4 in advance so that the hydrothermal medium does not pass through the radiator 3 when the cooling operation is executed. Further, when the radiator 3 is set exclusively for cooling, the control means 6 closes the flow rate adjustment valve 4 in advance so that the water heat medium does not pass through the radiator 3 when the heating operation is executed.

  Further, the above-described operation for associating the radiator 3 and the remote controller 5 is always performed. For example, the control unit 6 causes the display unit 52 to display a screen for performing an initial setting when the heat source device 1 and the remote controller 5 are connected by electrical wiring and the power source is turned on. For example, when the initial setting is not set, the control unit 6 takes a prohibition measure so that the air conditioning operation cannot be executed. Note that the above-described “prohibition” means that the control unit 6 does not accept the information for executing the air-conditioning operation even if the information is acquired from the operation unit 51.

  Further, the above-described initial setting may be performed for each of the remote controllers 5a, 5b, and 5c, or the above-described initial setting may be performed for all of the remote controllers 5a, 5b, and 5c with any of the remote controllers 5a, 5b, and 5c. .

  Further, the setting for associating the radiator 3 and the remote controller 5 may be performed even after the initial setting is completed. For example, after the initial setting is completed, a screen for performing a setting for associating the radiator 3 and the remote controller 5 may be displayed on the display unit 52 by the user operating the menu key 51e. Thereby, even if a setting mistake occurs at the time of initial setting, the setting can be performed correctly. In addition, it is possible to flexibly cope with changing the combination of the radiator 3 and the remote controller 5 associated with each other.

  FIG. 4 is a diagram showing an example of a screen displayed on the remote controller 5 of the cold / hot water air conditioning system 100 according to Embodiment 1 of the present invention. FIG. 4 is a diagram showing a state where a screen for setting the operation mode is displayed on the display means 52.

  As shown in FIG. 4, the display means 52 is provided with an upper display area 53 and a lower display area 54. For example, in the upper display area 53, characters for selecting a heating operation or a cooling operation are displayed. Specifically, for example, characters “heating” and “cooling” are displayed in the upper display area 53. In the lower display area 54, a first area 54a, a second area 54b, a third area 54c, and a fourth area 54d are provided.

  The first area 54a is an area in which contents explaining functions executed by operating the return key 51a are displayed. That is, by operating the return key 51a, the function displayed in the first area 54a is executed. For example, by operating the return key 51a, it is possible to select an operation mode that is not selected from heating operation and cooling operation.

  The second area 54b is an area in which contents explaining functions executed by operating the down key 51b are displayed. That is, by operating the down key 51b, the function displayed in the second area 54b is executed. In addition, when the content explaining the function executed by operating the lower key 51b is not displayed in the second area 54b, there is no function executed even if the lower key 51b is operated.

  The third area 54c is an area in which contents explaining functions executed by operating the up key 51c are displayed. That is, the function displayed in the third area 54c is executed by operating the up key 51c. For example, by operating the up key 51c, the screen changes to the screen immediately before the screen for setting the operation mode.

  The fourth area 54d is an area in which contents explaining functions executed by operating the enter key 51d are displayed. That is, by operating the enter key 51d, the function displayed in the fourth area 54d is executed. For example, the selected operation mode can be executed by operating the enter key 51d.

The operation when setting the operation mode will be described below.
First, the user operates the return key 51a to switch the operation mode. When the desired operation mode is selected by operating the return key 51a, the user operates the selected operation mode by operating the decision key 51d.

  The return key 51a corresponds to the first area 54a, the lower key 51b corresponds to the second area 54b, the upper key 51c corresponds to the third area 54c, the determination key 51d and the fourth area 54d, However, the correspondence relationship between each key and each region is not limited to this. For example, the return key 51a corresponds to the second area 54b, the lower key 51b corresponds to the first area 54a, the upper key 51c corresponds to the fourth area 54d, and the enter key 51d corresponds to the third area 54c. May be configured to correspond.

  FIG. 5 is a diagram showing an example of a screen displayed on the remote controller 5 of the cold / hot water air conditioning system 100 according to Embodiment 1 of the present invention. FIG. 5 is a diagram showing a state in which a screen for setting the operation mode is displayed on the display means 52 when the radiator 3 in operation exists. Here, for example, when there is an open flow rate adjustment valve 4, it is assumed that there is a radiator 3 in operation.

  As shown in FIG. 5, when the operation mode is set when there is an open flow rate adjustment valve 4, a predetermined sentence is displayed in the upper display area 53. Here, “predetermined text” means, for example, “there is a radiator during heating operation, so that the air-conditioning mode cannot be switched” and “in order to switch the air-conditioning mode, it is necessary to stop the operation with all remote controllers. It is a sentence explaining that there is. By displaying such text on the display means 52, it is possible to announce appropriate information to the user.

  At this time, the control means 6 restricts (locks) the information so as to prevent the change from the heating operation to the cooling operation even if the information for operating the return key 51a is acquired in the state where the heating operation is being executed. In addition, the control means 6 restricts (locks) the information so that the operation from the cooling operation cannot be changed to the heating operation even if the information for operating the return key 51a is acquired in the cooling operation. In this way, it is possible to suppress the passage of cold water through the radiator 3 when the heating operation is being performed, and it is possible to suppress the passage of warm water through the radiator 3 when the cooling operation is being performed. Note that the above-mentioned “restriction (lock)” means that, for example, the control unit 6 does not accept the information for changing the operation mode from the operation unit 51.

  When the user operates the remote controller 5 and closes all of the flow rate adjusting valves 4a, 4b, 4c, the hydrothermal medium does not pass through the radiators 3a, 3b, 3c, so the control means 6 changes the operation mode. Allow. As a result, the user can switch from the heating operation to the cooling operation and operate the operation means 51 of the remote controller 5 to set the operation of the radiator 3. When the heating operation is switched to the cooling operation, the control means 6 controls the flow rate adjustment valve 4 corresponding to the radiator 3 set exclusively for heating so that the cold water does not pass through the radiator 3 set only for heating. Block. Further, the user can switch from the cooling operation to the heating operation and operate the operation means 51 of the remote controller 5 to set the operation of the radiator 3. When the cooling operation is switched to the heating operation, the control means 6 controls the flow rate adjusting valve 4 corresponding to the radiator 3 set exclusively for cooling so that the hot water does not pass through the radiator 3 set only for cooling. Block.

  FIG. 6 is a diagram showing an example of a screen displayed on the remote controller 5 of the cold / hot water air conditioning system 100 according to Embodiment 1 of the present invention. FIG. 6 is a screen displayed on the display means 52 of the remote controller 5 for setting the operation of the radiator 3 dedicated to heating.

  As shown in FIG. 6, the upper display area 53 displays a text indicating that the heating-only radiator 3 cannot be operated because the cooling operation is being performed. Here, for example, “the sentence indicating that the operation cannot be performed” is, for example, “this remote control is only for heating. Please switch the operation mode from cooling to heating from the menu”. By displaying such text on the display means 52, it is possible to announce appropriate information to the user.

  The first area 54a displays content indicating that the operation content can be switched by operating the return key 51a. For example, the current operation content is displayed above the first region 54a.

  The second area 54b displays content indicating that the set room temperature can be lowered by operating the down key 51b. For example, each time the lower key 51b is pressed, the set room temperature is lowered by 1 ° C.

  The third area 54c displays content indicating that the set room temperature can be raised by operating the up key 51c. For example, each time the upper key 51c is pressed, the set room temperature increases by 1 ° C.

  The fourth area 54d displays content indicating that the water temperature can be adjusted by operating the enter key 51d. For example, every time the enter key 51d is pressed, it is possible to switch between automatically adjusting the water temperature and manually adjusting the water temperature. For example, the currently set water temperature is displayed above the fourth area 54d.

  Below, the operation example of the cold / hot water air conditioning system 100 in case the radiator 3a is set only for heating, the radiator 3b is set only for cooling, and the radiator 3c is set only for heating is demonstrated.

At this time, when the heating operation is started, the flow rate adjustment valve 4a corresponding to the radiator 3a is opened, the flow rate adjustment valve 4b corresponding to the radiator 3b is closed, and the flow rate adjustment valve 4c corresponding to the radiator 3c is It will be released.
On the other hand, when the cooling operation is started, the flow rate adjustment valve 4a corresponding to the radiator 3a is closed, the flow rate adjustment valve 4b corresponding to the radiator 3b is opened, and the flow rate adjustment valve 4c corresponding to the radiator 3c is closed. Will be.

In addition, the control unit 6 is configured so that the flow rate adjustment valve 4a corresponding to the radiator 3a and the flow rate corresponding to the radiator 3c when the instruction to switch to the cooling operation is given from the operation unit 51 while the heating operation is being performed. Since the regulating valve 4c is opened, the display means 52 displays that switching to the cooling operation is not permitted.
On the other hand, since the flow rate adjustment valve 4b corresponding to the radiator 3b is opened when the control means 6 is instructed to switch to the heating operation from the operation means 51 while the cooling operation is being performed, A message indicating that switching to operation is not allowed is displayed on the display means 52.

Further, when the flow rate adjusting valve 4a corresponding to the radiator 3a and the flow rate adjusting valve 4c corresponding to the radiator 3c are closed while the heating operation is being performed, the control means 6 is configured to adjust the flow rate adjusting valves 4a and 4b. , 4c are all blocked, and switching to the cooling operation is allowed.
On the other hand, when the flow rate adjustment valve 4b corresponding to the radiator 3b is closed while the cooling operation is being executed, the control means 6 closes all the flow rate adjustment valves 4a, 4b, 4c. Allows switching to

Further, the control means 6 displays that the remote controller 5 corresponding to the radiator 3b indicates that the cooling-only radiator 3b cannot be operated because the heating operation is being performed. It is displayed on the means 52.
On the other hand, the control means 6 displays that the remote controller 5 corresponding to the radiator 3a indicates that the radiator 3a dedicated to heating cannot be operated because the cooling operation is being performed. It is displayed on the means 52. Further, the control means 6 displays that the remote controller 5 corresponding to the radiator 3c indicates that the radiator 3c dedicated to heating cannot be operated because the cooling operation is being performed while the cooling operation is being performed. It is displayed on the means 52.

As described above, in the cold / hot water air conditioning system 100 according to Embodiment 1 of the present invention, the control means 6 can be operated only in one of the heating operation mode and the cooling operation mode, or either the heating operation or the cooling operation. Each of the plurality of radiators 3 is set so as to be operable even in the operation mode, and the heat radiator 3 set so as to be operable only in the heating operation mode is supplied with water heat in the cooling operation mode. When the flow control valve 4 is controlled to be blocked so that the medium does not pass through and the operation means 51 instructs to switch to the cooling operation mode in the heating operation mode, all of the flow control valves 4 are closed. On the condition that the switching to the operation mode of the cooling operation is permitted, or the radiator 3 set to be operable only in the operation mode of the cooling operation, the operation mode of the heating operation is set. When the operation means 51 is instructed to control the flow rate adjustment valve 4 so that the hydrothermal medium does not pass through and to switch to the operation mode of the heating operation in the operation mode of the cooling operation, all of the flow rate adjustment valve 4 is closed. On the condition that it is doing, switching to the operation mode of heating operation is permitted.
For this reason, heating operation and cooling operation can be performed so as to suppress the occurrence of dew condensation without providing a plurality of water heating medium circulation circuits 2. Therefore, the occurrence of condensation can be suppressed as in the conventional case, and the cost can be reduced as compared with the conventional case.

  In addition, in the above description, although the radiator 3a was set only for heating, the radiator 3b was set only for cooling, and the radiator 3c was set only for heating, it was limited to this. It is not a thing. A state where there is at least one radiator dedicated to heating, one radiator dedicated to cooling, or a radiator combined with cooling and heating, a radiator dedicated to cooling, and a radiator dedicated to heating or a radiator combined with cooling and heating, It suffices if one or more units are present, or two or more radiators that are also used for cooling and heating exist.

  In the first embodiment, the example in which the operation unit 51 and the display unit 52 configuring the remote controller 5 are integrated is described. However, the present invention is not limited to this. For example, the operation means 51 and the display means 52 constituting the remote controller 5 may be configured separately.

  Moreover, in this Embodiment 1, the text which shows that the heat radiator 3 in operation exists is displayed on the upper display area | region 53, and the text which shows that the heat radiator 3 only for heating exists during air_conditionaing | cooling operation. Although an example of displaying in the upper display area 53 has been described, the present invention is not limited to this. For example, a sentence displayed in the upper display area 53 may be output by voice and notified to the user.

  In the above description, the example in which the radiator 3 is used exclusively for heating has been mainly described, but the radiator 3 may be used only for cooling. Even when the radiator 3 is used exclusively for cooling, as in the case where the radiator 3 is used exclusively for heating, the flow rate adjustment valve 4 may be closed and text displayed on the display means 52. Thereby, the malfunction by warm water passing through the radiator 3 only for cooling can be suppressed. Therefore, even when the radiator 3 is used exclusively for cooling, the convenience can be improved in the same manner as when the radiator 3 is used exclusively for heating. In addition, the malfunction by warm water passing the radiator 3 only for cooling points out the durability of the radiator 3, and the danger of a user's burn.

  DESCRIPTION OF SYMBOLS 1 Heat source machine, 2 Water heat medium circulation circuit, 3, 3a, 3b, 3c Radiator, 4, 4a, 4b, 4c Flow control valve, 5, 5a, 5b, 5c Remote control, 6 Control means, 51 Operation means, 51a Back key, 51b Down key, 51c Up key, 51d Enter key, 51e Menu key, 51f Hikame key, 51g Timer key, 51h Stop key, 52 Display means, 53 Upper display area, 54 Lower display area, 54a First Region, 54b Second region, 54c Third region, 54d Fourth region, 100 Cold / hot water air conditioning system.

Claims (7)

A water heating medium circulation circuit through which the water heating medium passes;
A heat source device provided on the water heat medium circulation circuit for heating or cooling the water heat medium;
A plurality of radiators provided on the water heat medium circulation circuit, into which a water heat medium flowing out from the heat source unit flows,
A flow rate adjustment valve that is provided on the water heat medium circulation circuit corresponding to the plurality of radiators and adjusts the amount of the water heat medium flowing into the plurality of radiators,
Operation means;
Control means for controlling the flow rate adjusting valve based on information on the start of operation of the radiator, the operation stop of the radiator, room temperature control, and water temperature control output from the operation means,
The plurality of radiators are:
A radiator for heating operation that can only flow in a heated water heating medium,
It is configured to function as a cooling operation dedicated radiator that can only flow in a cooled water heat medium, and a cooling operation heating operation combined heat radiator that can flow in both heated and cooled water heat medium.
On the water heating medium circulation circuit,
A state where there is one or more each of the radiator exclusively for heating operation and the radiator exclusively for cooling operation or the radiator for heating and cooling operation combined use,
The cooling operation dedicated radiator, the heating operation dedicated radiator or the cooling operation heating operation combined use radiator, each of which is present, or
The cooling operation heating operation combined heat radiator is in a state where there are two or more,
The control means includes
Each of the plurality of radiators is set so that it can be operated only in one of the operation modes of heating operation and cooling operation, or can be operated in any operation mode of heating operation and cooling operation,
The flow rate adjusting valve is closed and controlled so that the hydrothermal medium does not pass through the radiator set to be operable only in the heating operation mode so that the hydrothermal medium does not pass in the cooling operation mode. When there is an instruction to switch to the operation mode of operation from the operation means, switching to the operation mode of the cooling operation is permitted on condition that all of the flow rate adjusting valves are closed, or the operation mode of the cooling operation The flow control valve is closed and controlled so that the hydrothermal medium does not pass through the radiator set to be operable only in the heating operation mode in the heating operation mode, and the heating operation mode is set in the cooling operation mode. When an instruction to switch is given from the operation means, switching to the heating operation mode is allowed on condition that all of the flow rate adjusting valves are closed. A cold / hot water air conditioning system. As a method of setting each of the plurality of radiators so as to be operable only in one of the heating operation mode and the cooling operation mode, or in any of the heating operation mode and the cooling operation mode, The cold / hot water air conditioning system according to claim 1, wherein the system is set as an initial setting before the system construction is completed and the air conditioning operation is started. The cold / hot water air-conditioning system according to claim 1, further comprising notification means controlled by the control means. The control means includes
When there is an instruction from the operation means to switch to the cooling operation mode in the heating operation mode, the cooling operation mode is set on condition that at least one of the flow rate control valves is open. The cold / hot water air-conditioning system according to claim 3, wherein the informing means is informed that switching to the system is not permitted. The control means includes
When there is an instruction from the operation means to switch to the heating operation mode in the cooling operation mode, the heating operation mode is set on condition that at least one of the flow rate control valves is open. The cold / hot water air-conditioning system according to claim 3, wherein the informing means is informed that switching to the system is not permitted. The control means includes
When the operation mode of heating operation is being executed, the notification means is notified that the radiator set in the operation mode of cooling operation cannot be operated. The cold / hot water air conditioning system as described in any one of. The control means includes
When the operation mode of the cooling operation is being executed, the notification unit is notified that the radiator set in the operation mode of the heating operation cannot be operated. The cold / hot water air conditioning system as described in any one of.

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