JPH11230600A - Air conditioning ventilator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To notify a user that a more comfortable indoor atmosphere can be attained by introducing the outer air as it is. SOLUTION: The air conditioning ventilator performing heat exchanging ventilation of indoor and outdoor air through an incorporated heat exchanger 1 comprises an indoor temperature detecting means 13 for detecting suction temperature of indoor and outdoor air before passing through the heat exchanger 1, an outdoor temperature detecting means 14, an operation control circuit 8 and an image display means 12. Outputs from the indoor temperature detecting means 13 and the outdoor temperature detecting means 14 are inputted to the control circuit 8 and when conditions requiring no heat exchanging ventilation are satisfied, the control circuit 8 notifies to this effect on the image display means 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for performing ventilation by air supply and exhaust through a built-in heat exchanger and an air conditioning and ventilator for performing cooling and heating together with ventilation.

[0002]

2. Description of the Related Art As shown in FIG. 7, this type of air-conditioning ventilator has a built-in heat exchanger for performing air-to-air heat exchange, and performs ventilation by simultaneous air supply and exhaust while performing heat exchange. In addition, it is possible to perform ventilation with little variation in the state quantity in the room. Many of such ventilators are provided with a bypass ventilation path 6 that bypasses the heat exchanger 1 in the exhaust ventilation path 5 as shown in FIG. The bypass ventilation path 6 is provided with a switching damper 7 at a branch portion from the exhaust ventilation path 5. The switching damper 7 is driven to open the bypass ventilation path 6, and the exhaust ventilation path 5 is located on the heat exchanger 1 side. By closing the, normal ventilation without heat exchange can be performed.

Many of them have a function that can be set by the remote control device 20 or the like to set an automatic switching mode for automatically switching from heat exchange ventilation to ordinary ventilation and from ordinary ventilation to heat exchange ventilation. In many air-conditioning ventilation apparatuses provided with the automatic switching mode, the operation content operated by the remote control device 20 is displayed on the display unit 21 of the remote control device 20 so as to be understood by the user.

[0004] In addition to the above, there is a type which includes a heat exchange means for cooling or heating the outdoor air passing through the heat exchanger 1, and which can perform a ventilation operation in a cooling mode or a heating mode. In this type, in the heating mode or the cooling mode, switching between heat exchange ventilation and normal ventilation is performed according to the set temperature set by the remote control device 20 and the indoor and outdoor temperature conditions.

[0005]

In the conventional air conditioning and ventilating apparatus as described above, when the automatic switching mode or the like is set, the remote control device 20 or the like is in the operating state of the heat exchange ventilation or the normal ventilation mode. Although the status of operation is displayed, the user can only know the operation contents of the setting by simply displaying the operation status.In fact, the relationship between the state quantity inside and outside the room does not require heat exchange ventilation. There is no indication that there is a possibility that dew condensation may occur in the air-conditioning ventilator even if it is set to normal ventilation. In a state where dew condensation occurs, even if the user sets the normal ventilation, control for forcibly setting the heat exchange ventilation can be performed.
In addition to discrepancies between the display of the above and the actual driving state, it may be against the intention of the user.
Further, it is difficult to directly recognize that the air conditioner is equipped with a cooling and heating function, that is, a state in which outside air can be cooled by introducing outside air, and a state in which outside air can be heated by introducing outside air.

In the middle period such as summer, spring, and autumn, it is often the case that a more comfortable indoor atmosphere can be obtained by introducing the outside air into the room as it is. Although it is better not to do so, no air-conditioning and ventilation system has been developed so far that the user can be informed and recognized easily.

SUMMARY OF THE INVENTION The present invention has been made in view of the above viewpoints, and it is an object of the present invention to provide a more comfortable indoor atmosphere when the outside air is introduced into the room as it is, and to provide a method in which the outside air is not introduced as it is. It is an object of the present invention to develop an air-conditioning ventilator having an image display function capable of notifying the user easily that the air conditioner is good, and to improve the usability of the device.

[0008]

According to a first aspect of the present invention, there is provided a heat exchanger for sucking indoor air, exhausting the air to the outside through one fluid passage of a built-in heat exchanger, and sucking the outdoor air. For an air-conditioning ventilator capable of performing a heat exchange ventilation operation for supplying air to the room through the other fluid passage of the exchanger, an indoor temperature detecting means for detecting a suction temperature of indoor air before passing through the heat exchanger, An outdoor temperature detection means for detecting an outdoor air suction temperature before passing through the heat exchanger, a control means for controlling operation, and an image display means are provided, and outputs of the indoor temperature detection means and the outdoor temperature detection means are provided. Is input to the control means, and when the detected temperatures of the indoor temperature detection means and the outdoor temperature detection means satisfy the conditions that do not require the heat exchange ventilation operation, the control means displays the heat exchange ventilation operation on the image display means. You Employing means to be displayed by the image that do not need.

In order to achieve the above object, a second aspect of the present invention is to provide a heat exchanger in which indoor air is sucked and exhausted to the outside through one fluid passage of a built-in heat exchanger, and the outdoor fluid is sucked into the other fluid of the heat exchanger. An air-conditioning ventilator that can perform a heat exchange ventilation operation that supplies air to the room through a passage and a normal ventilation operation that exhausts room air without passing through the heat exchanger by opening a bypass ventilation path that bypasses the heat exchanger An indoor temperature detecting means for detecting a suction temperature of indoor air before passing through the heat exchanger; an outdoor temperature detecting means for detecting a suction temperature of outdoor air before passing through the heat exchanger; Control means for controlling, provided with an image display means, input the output of the indoor temperature detection means and the output of the outdoor temperature detection means to the control means,
During the heat exchange ventilation operation, if the detected temperatures of the indoor temperature detection means and the outdoor temperature detection means satisfy a condition that does not require the heat exchange ventilation operation, the control means displays the heat exchange ventilation operation on the image display means. A means for displaying that there is no need to do so by an image is adopted.

In order to achieve the above object, the present invention according to claim 3 is based on the control means in the means according to claim 2,
If a condition that requires heat exchange ventilation is satisfied during the normal ventilation operation, means for displaying an image indicating that heat exchange ventilation operation is required on the image display means is adopted.

According to a fourth aspect of the present invention, there is provided a heat exchanger for sucking indoor air, exhausting the air to the outside through one fluid passage of a built-in heat exchanger, and sucking the outdoor air to the other fluid of the heat exchanger. A heat exchange ventilation operation for supplying air to the room through the passage and an air conditioning ventilation operation for cooling or heating the outdoor air after passing through the heat exchanger by the heat exchange means to supply air according to a set temperature can be performed. For air conditioning and ventilation systems,
Indoor temperature detecting means for detecting the suction temperature of indoor air before passing through the heat exchanger; outdoor temperature detecting means for detecting suction temperature of outdoor air before passing through the heat exchanger; and controlling operation Control means and image display means are provided, and the outputs of the indoor temperature detecting means and the outdoor temperature detecting means and the set temperature are input to the control means, respectively. When the condition that does not require air-conditioning ventilation operation is satisfied by comparing the detected temperature and the set temperature, the control means displays an image indicating that the air-conditioning ventilation operation is not required on the image display means by an image. Is adopted.

According to a fifth aspect of the present invention, there is provided a heat exchanger for sucking indoor air, exhausting the air to the outside through one fluid passage of a built-in heat exchanger, and sucking the outdoor air to the other fluid of the heat exchanger. A heat exchange ventilation operation for supplying air to the room through the passage and an air conditioning ventilation operation for cooling or heating the outdoor air after passing through the heat exchanger by the heat exchange means to supply air according to a set temperature can be performed. For air conditioning and ventilation systems,
Indoor temperature detecting means for detecting the suction temperature of indoor air before passing through the heat exchanger; outdoor temperature detecting means for detecting suction temperature of outdoor air before passing through the heat exchanger; and controlling operation Control means and image display means are provided, and the outputs of the indoor temperature detecting means and the outdoor temperature detecting means and the set temperature are input to the control means, respectively. If the condition that does not require air-conditioning ventilation operation is satisfied by comparing the detected temperature and the set temperature, the control means displays on the image display means that the air-conditioning ventilation operation is not necessary by displaying an image. During the exchange ventilation operation, if the detected temperatures of the indoor temperature detection means and the outdoor temperature detection means satisfy a condition that does not require the heat exchange ventilation operation, the control means applies heat to the image display means. The fact that there is no need of Why Why of gas operation to adopt the means to be displayed by the image.

According to a sixth aspect of the present invention, there is provided a remote controller for remotely controlling the image display means in the means according to any one of the first to fifth aspects, the image display means being connected to a control means. Means to be provided in the device is adopted.

[0014]

Embodiments of the present invention will now be described with reference to the drawings. Embodiment 1 FIG. The air conditioning and ventilating apparatus according to the first embodiment shown in FIGS. 1 to 3 has a built-in heat exchanger 1 for performing heat exchange between air and air, and performs indoor ventilation by simultaneous supply and exhaust while performing heat exchange. Therefore, it is possible to perform ventilation with less fluctuation of the state quantity in the room. In this air-conditioning ventilator, a part of the path is constituted by one fluid passage of the heat exchanger 1, and an air supply passage 3 through which an air supply flow from the outdoor to the room is supplied by the air supply fan 2, and a part of the path Is constituted by the other fluid passage of the heat exchanger 1, and the exhaust ventilation passage 5 through which the exhaust air flows from the room to the outside by the exhaust fan 4 is independently formed over the entire passage.

On the exhaust air passage 5 side, there is provided a bypass air passage 6 which is branched upstream of the heat exchanger 1 and bypasses the heat exchanger 1 to communicate with the outside. At a branch portion of the bypass ventilation passage 6 with the exhaust ventilation passage 5, one of the exhaust ventilation passage 5 and the bypass ventilation passage 6 is closed and one of the two is opened. A closed switching damper 7 is provided. The switching damper 7 is driven by a geared motor (not shown) or the like, and can perform heat exchange ventilation involving heat exchange between supply and exhaust in a state where the bypass ventilation passage 6 is closed, and opens the bypass ventilation passage 6. In a state where the heat exchanger 1 side of the exhaust ventilation passage 5 is closed, ordinary ventilation without heat exchange for exhausting indoor air to the outside through the bypass ventilation passage 6 can be performed.

A remote control device 9 for remote control is connected via a communication line to a control circuit 8 including a microcomputer for controlling the operation of the air-conditioning ventilator. By using 10, it is possible to switch the ventilation mode from heat exchange ventilation to ordinary ventilation, from ordinary ventilation to heat exchange ventilation, and to operate in the automatic switching mode in which the ventilation mode is automatically switched by the setting of the automatic switching button 11. . The remote control device 9 is provided with an image display means 12 for displaying operation contents and the like as images. Further, the control circuit 8 includes a room temperature detecting means 13 provided in the exhaust air passage 5 for detecting a suction temperature of indoor air before passing through the heat exchanger 1 and a room temperature detecting means 13 before passing through the heat exchanger 1. Is connected to an outdoor temperature detecting means 14 provided in the air supply passage 3 for detecting the outdoor air suction temperature.

The operation of the control circuit 8 is as shown in FIG. That is, it is determined whether or not the air-conditioning ventilator is operating at # 1 in FIG.
The processing not to be displayed in No. 2 is performed, and the process returns to # 1. If the operation is being performed, the process proceeds to # 3, where it is determined whether or not the heat exchange ventilation operation is being performed in # 3. If the heat exchange ventilation operation is being performed in # 3, the process proceeds to # 4, and in # 4, the outdoor temperature t1 which is the temperature detected by the outdoor temperature detecting means 14 and the indoor temperature t2 which is the temperature detected by the indoor temperature detecting means 13 are set. To determine whether the conditions are met. If the condition is not satisfied, the process proceeds to step # 2. If the condition is satisfied, at step # 5, the image display means 12 of the remote control device 9 displays, for example, characters such as "no need for heat exchange" or "open window", or a symbol for opening the window. And returns to # 1. If the normal ventilation operation is being performed instead of the heat exchange ventilation operation in # 3, the process proceeds to # 6 and it is determined whether the outdoor temperature t1 and the indoor temperature t2 satisfy the set conditions in # 6. # 2 if conditions are not met
If the condition is satisfied, it is determined at # 7 whether or not a predetermined time has elapsed by the timer. If the elapsed time has not elapsed, in step # 8, for example, a process of performing a display that makes it easy to see that the normal ventilation is inappropriate is performed on the image display means 12 of the remote control device 9, and the process returns to # 1. If it has elapsed, proceed to step # 2 to turn off the indication of inappropriateness of ordinary ventilation. At this time, the operation of the air conditioning ventilation device is set to the heat exchange ventilation operation.

The conditions of the outdoor temperature t1 and the indoor temperature t2 on which the indication that no heat exchange is required are, for example,
If it is intended to obtain the indoor cooling effect by the outside air, if the outdoor temperature t1 <the indoor temperature t2 is set, the user can understand from the display confirmation that the outside air cooling effect can be obtained in the middle period of summer or spring and autumn. It is also possible to reduce the load on the air conditioner that is used for ventilation or normal ventilation operation, and to suppress the operation of the air conditioner, thereby enabling energy-saving air conditioning that does not impair indoor comfort. Conversely, if the conditions of the outdoor temperature t1 and the indoor temperature t2 are set such that the outdoor temperature t1> the indoor temperature t2, it is possible to obtain an outdoor air heating effect by the external air.

On the other hand, if the conditions of the outdoor temperature t1 and the indoor temperature t2, which are the basis for indicating that the ventilation is inappropriate, are set to, for example, the outdoor temperature t1 having a large temperature difference <the indoor temperature t2, the temperature in winter can be increased. When the outdoor temperature t1 having a large difference and the indoor temperature t2 are set to the normal ventilation operation,
Since there is no heat exchange between the air supply and exhaust flow, dew condensation may occur inside the air conditioning ventilation system.However, it is not a problem in a short time. Perform normal ventilation operation. As a result, it is possible to meet the user's request for rapid ventilation and the like. However, it is not preferable to perform the normal ventilation operation for a long time in such a situation, since it may adversely affect the air-conditioning ventilation device. Therefore, the heat exchange ventilation operation is automatically set after a certain period of time. In this case as well, if the conditions of the outdoor temperature t1 and the indoor temperature t2 are set to, for example, the outdoor temperature t1 having a large temperature difference> the indoor temperature t2, the outdoor temperature t1 having a large temperature difference in the summer season> the indoor temperature t2. It is possible to respond to the situation described above. Displaying such images on the remote control device 9 is easier to see and use, but may be displayed on an operation panel or the like. Further, the present invention can be applied to an air-conditioning ventilator having a configuration having no bypass ventilation path 6 by adopting a control sequence in which the processes of # 3, # 6, # 7, and # 8 in FIG. The above-mentioned effectiveness can be exhibited during operation.

Embodiment 2 4 to 6 show an air-conditioning and ventilation device according to the second embodiment. As can be seen from FIG. 4, a heat exchange means 15 for performing cooling or heating is incorporated in the air supply ventilation passage 3 of the air conditioning and ventilating apparatus shown in the first embodiment. This is the same as that of the first embodiment. Therefore, the same parts as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and the description thereof will be omitted.

In this air conditioning and ventilating apparatus, heat exchange means 15 for cooling or heating the outdoor air after passing through the heat exchanger 1 to perform cooling or heating is incorporated in the air supply ventilation passage 3, and the heat exchange ventilation operation is performed. In addition to the normal ventilation operation, an air conditioning ventilation operation involving cooling and heating can also be performed. An operation switching button 16 for switching between a cooling mode and a heating mode is provided on the remote controller 9.
And a temperature setting button 17 for setting a set temperature T. The operation without cooling and heating is the same operation as that of the first embodiment, and performs the same function. The control circuit 8 also receives a signal relating to the operation mode by the operation switching button 16 and the set temperature T by the temperature setting button 17. When the cooling mode or the heating mode is set, the control circuit 8 detects the temperature by the indoor temperature detecting means 13. The room temperature t which is the temperature
The feedback control of the cooling and heating system is performed so that 2 becomes the set temperature T.

In addition to such feedback control, the control circuit 8 performs a control operation as shown in FIG.
That is, it is determined whether the operation mode set by the remote control device 9 is the cooling mode in # 11 in FIG. If the mode is the cooling mode, the process proceeds to # 12, and in # 12, the set temperature T set by the remote control device 9 is compared with the room temperature t2 to determine whether or not the condition of t2> T is satisfied. If the condition of t2> T is not satisfied in # 12, #
Then, the process proceeds to step S13, where processing for not displaying the image on the image display means 12 is performed, and the process returns to step # 11. If the condition of t2> T is satisfied in # 12, the outdoor temperature t1 is compared with the set temperature T in # 14, and it is determined whether or not the condition of t1 <T is satisfied. If the condition of t1 <T is not satisfied in # 14, #
Then, the process proceeds to step S13, where processing for not displaying the image on the image display means 12 is performed, and the process returns to step # 11. If the condition of t1 <T is satisfied in # 14, the process proceeds to # 15. In # 15, for example, a process of displaying, for example, an image display allowing the outside air cooling on the image display means 12 of the remote control device 9 is performed, and the process returns to # 11.

If it is not the cooling mode in # 11, # 16
It is determined whether the mode is the heating mode. If the mode is not the heating mode, the process proceeds to step # 13. If the mode is the heating mode, the process proceeds to # 17. At step # 17, the set temperature T set by the remote controller 9 is compared with the room temperature t2. It is determined whether the condition is satisfied. T2 at # 17
If the condition of <T is not satisfied, the process proceeds to step # 13, where processing for not displaying the image on the image display means 12 is performed, and the process returns to step # 11. If the condition of t2 <T is satisfied in # 17, # 18
Then, the outdoor temperature t1 is compared with the set temperature T to determine whether or not the condition of t1> T is satisfied. T1 at # 18>
If the condition of T is not satisfied, the process proceeds to # 13, where processing for not displaying the image on the image display means 12 is performed, and the process returns to # 11.
If the condition of t1> T is satisfied in # 18, the process proceeds to # 19, and in # 19, for example, a process of displaying an image display indicating that outside air can be heated is displayed on the image display means 12 of the remote control device 9, and the process returns to # 11.

Thus, the user can easily determine whether or not the outside air can be cooled by introducing outside air during the cooling operation.
At the time of the heating operation, it is easily understood whether the outside air can be heated by introducing the outside air. That is, according to the image display on the image display means 12, for example, by opening a window and performing natural ventilation, an outdoor air cooling effect and an outdoor air heating effect are obtained, and an energy saving effect is obtained. In addition, it is possible to select to suppress or stop the operation of the air-conditioning ventilator, and it is possible to expect an energy-saving effect during cooling and heating.

[0025]

As is apparent from the above description of the embodiments, according to the first and second aspects of the present invention, it is possible to obtain a more comfortable indoor atmosphere when the outside air is introduced into the room as it is. The air-conditioning and ventilating apparatus having an image display function capable of notifying the user of the air conditioner easily can be obtained.

According to the third aspect of the present invention, there is provided an air-conditioning / ventilating apparatus having an image display function capable of easily informing a user that it is better not to introduce outside air as it is, in addition to the effect according to the second aspect. can get.

According to the fourth and fifth aspects of the present invention, there is provided an image display function for easily informing the user that a more comfortable indoor atmosphere can be obtained if the outside air is directly introduced into the room. An air-conditioning ventilator capable of cooling and heating can be obtained.

According to the invention of claim 6, in addition to the effects according to any one of claims 1 to 5, the image display portion is easy to see and the usability of the apparatus is improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating an air-conditioning ventilation device according to a first embodiment.

FIG. 2 is a configuration diagram of a remote control device of the air-conditioning ventilator according to the first embodiment.

FIG. 3 is a flowchart illustrating an operation of a control circuit of the air-conditioning ventilator according to the first embodiment.

FIG. 4 is a configuration diagram illustrating an air conditioning ventilation device according to a second embodiment.

FIG. 5 is a configuration diagram of a remote control device of an air-conditioning ventilation device according to a second embodiment.

FIG. 6 is a flowchart illustrating an operation of a control circuit of the air-conditioning ventilator according to the second embodiment.

FIG. 7 is a configuration diagram showing a conventional air-conditioning ventilator.

[Explanation of symbols]

1 heat exchanger, 2 air supply fan, 3 air supply ventilation passage,
Reference Signs List 4 exhaust fan, 5 exhaust ventilation path, 6 bypass ventilation path, 7 switching damper, 8 control circuit, 9 remote control device, 12 image display means, 13 indoor temperature detection means, 14 outdoor temperature detection means, 15 heat exchange means, 16 operation Switching button, 17 temperature setting button.

Claims (6)

[Claims] 1. A heat exchange ventilation operation in which indoor air is sucked and exhausted to the outside through one fluid passage of a built-in heat exchanger, and the outdoor air is sucked and supplied to the room through the other fluid passage of the heat exchanger. Air conditioning and ventilation equipment
Indoor temperature detecting means for detecting a suction temperature of indoor air before passing through the heat exchanger; outdoor temperature detecting means for detecting a suction temperature of outdoor air before passing through the heat exchanger; Control means for controlling, and an image display means, an output of the indoor temperature detecting means and an output of the outdoor temperature detecting means are input to the control means, and the detected temperatures of the indoor temperature detecting means and the outdoor temperature detecting means are heat. An air-conditioning ventilator in which, when a condition that does not require the exchange ventilation operation is satisfied, an image indicating that the heat exchange ventilation operation is not necessary is displayed on the image display unit by an image by the control unit. 2. A heat exchange ventilation operation in which indoor air is sucked and exhausted to the outside through one fluid passage of a built-in heat exchanger, and the outdoor air is sucked and supplied to the room through the other fluid passage of the heat exchanger. And before passing through the heat exchanger, for an air-conditioning ventilator capable of performing a normal ventilation operation of exhausting room air without passing through the heat exchanger by opening a bypass ventilation path that bypasses the heat exchanger. Indoor temperature detecting means for detecting the suction temperature of indoor air, outdoor temperature detecting means for detecting the suction temperature of outdoor air before passing through the heat exchanger, control means for controlling operation, and image display Means, the outputs of the indoor temperature detecting means and the outdoor temperature detecting means are input to the control means, and the temperature detected by the indoor temperature detecting means and the outdoor temperature detecting means is changed by heat exchange during the heat exchange ventilation operation. Ventilation operation An air-conditioning ventilator in which, when a condition that does not need to be satisfied is satisfied, the control means displays an image on the image display means that the heat exchange ventilation operation is not necessary. 3. The air-conditioning ventilator according to claim 2, wherein when a condition that requires heat exchange ventilation is satisfied during the normal ventilation operation, the control unit displays the heat exchange ventilation operation on the image display unit. An air-conditioning ventilator that displays an image indicating that it needs to be performed. 4. A heat exchange / ventilation operation in which indoor air is sucked and exhausted to the outside through one fluid passage of a built-in heat exchanger, and the outdoor air is sucked and supplied to the room through the other fluid passage of the heat exchanger. And an air-conditioning ventilator that can perform an air-conditioning ventilation operation that cools or heats the outdoor air after passing through the heat exchanger by a heat exchange means to supply air according to a set temperature. Indoor temperature detecting means for detecting a suction temperature of indoor air before passing through a heat exchanger, outdoor temperature detecting means for detecting a suction temperature of outdoor air before passing through the heat exchanger, and control for controlling operation Means, an image display means, and inputs the outputs of the indoor temperature detecting means and the outdoor temperature detecting means and the set temperature to the control means, respectively, and performs the indoor temperature detecting means and the outdoor temperature during an air conditioning ventilation operation. When a condition that does not require air-conditioning ventilation operation is satisfied by comparing the detected temperature with the temperature detection unit and the set temperature, the control unit displays an image indicating that the air-conditioning ventilation operation does not need to be performed. Air-conditioning ventilator that is displayed by 5. A heat exchange ventilation operation in which indoor air is sucked and exhausted to the outside through one fluid passage of a built-in heat exchanger, and the outdoor air is sucked and supplied to the room through the other fluid passage of the heat exchanger. And an air-conditioning ventilator that can perform an air-conditioning ventilation operation that cools or heats the outdoor air after passing through the heat exchanger by a heat exchange means to supply air according to a set temperature. Indoor temperature detecting means for detecting a suction temperature of indoor air before passing through a heat exchanger, outdoor temperature detecting means for detecting a suction temperature of outdoor air before passing through the heat exchanger, and control for controlling operation Means, an image display means, and inputs the outputs of the indoor temperature detecting means and the outdoor temperature detecting means and the set temperature to the control means, respectively, and performs the indoor temperature detecting means and the outdoor temperature during an air conditioning ventilation operation. If the condition that does not require air-conditioning ventilation operation is satisfied by comparing the detection temperature of the temperature detection means and the set temperature, the image display means indicates that the air-conditioning ventilation operation is not required by the control means by an image. When the temperature detected by the indoor temperature detecting means and the outdoor temperature detecting means at the time of heat exchange ventilation operation satisfies the condition that does not require the heat exchange ventilation operation, the control means to the image display means. An air-conditioning ventilator that displays on the image that there is no need for heat exchange ventilation operation. 6. The air-conditioning and ventilating apparatus according to claim 1, wherein an image display means is provided in a remote control device for remote control connected to the control means.