JP6701447B2 - Air conditioner indoor unit - Google Patents

Description

  The present invention relates to an air conditioner indoor unit including an infrared sensor.

  In a conventional air conditioner, a configuration is known in which an indoor unit is provided with an infrared sensor to detect the presence and position of a person in the room. In addition, the temperature information of the floor surface and the wall surface is acquired by the infrared sensor, and the wind direction during the heating operation is controlled based on the acquired temperature information. In order to block the cold air flowing from the wall surface to the human body, a configuration is known in which warm air is sent between the cold air and the human body.

JP, 2016-29313, A

  Since the indoor unit of the conventional air conditioner controls the wind direction by using the temperature information of the floor surface and the wall surface detected by the infrared sensor, it is possible to suppress the cold air from the floor surface and the wall surface from hitting the human body. However, in the indoor unit of the conventional air conditioner, the cold air of the living stairs or the blow-through approaching from the space such as the side or the top is difficult to detect from the floor surface and the wall surface, and the cold air cannot be suppressed. Therefore, the cold air coming from the side or the top of the human body cannot be shut off by the warm air of the indoor unit. Therefore, there is a problem that it is impossible to prevent the cold air in the space from hitting the human body.

  The present invention has been made in view of the above, and is an air conditioner capable of suppressing cold air from a cold air source, such as a living staircase and a stairwell, from flowing into a space in which a person exists and hitting a person. The purpose is to obtain an indoor unit.

In order to solve the above-mentioned problems and to achieve the object, the indoor unit of the air conditioner according to the present invention has a cold air source from a temperature detection unit and a thermal image acquiring a thermal image of a space in which the indoor unit is installed. By estimating the existing first region and the second region which is the low temperature part of the human body, there is a cold air source on the low temperature part side of the human body, and the temperature of the first region and the temperature of the second region are When the difference is less than or equal to the threshold value, a control unit that controls to blow hot air toward the first region and the second region is provided.

  INDUSTRIAL APPLICABILITY The indoor unit of the air conditioner according to the present invention has an effect that it is possible to suppress the cold air from the cold air source in the space from hitting a person.

The perspective view seen from the lower right side of the indoor unit of the air conditioner concerning Embodiment 1. The perspective view seen from the right front of the indoor unit of the air conditioner concerning Embodiment 1. The figure which shows the longitudinal cross section of the indoor unit of the air conditioner in the III-III line of FIG. The figure which shows the functional structural example of the indoor unit of the air conditioner concerning Embodiment 1. The figure which shows the structural example of the temperature detection part with which the indoor unit of the air conditioner concerning Embodiment 1 is equipped. The figure which shows a mode that the infrared radiation energy absorption part of the temperature detection part with which the indoor unit of the air conditioner concerning Embodiment 1 is equipped acquires the temperature information of the vertical direction in space. The figure which shows the example of the viewing angle of the infrared radiation energy absorption part of the temperature detection part with which the indoor unit of the air conditioner concerning Embodiment 1 is equipped. The figure which shows a mode that the temperature detection part drive motor of the temperature detection part with which the indoor unit of the air conditioner concerning Embodiment 1 is equipped is driven in the left-right direction and the temperature in the horizontal direction in space is acquired. FIG. 3 is a diagram showing a configuration example of a control circuit according to the first embodiment. The figure which shows the temperature information of the whole room recognized by the control part of the indoor unit of the air conditioner concerning Embodiment 1, and a mode that a human body exists. The figure which shows the temperature information of the whole room which the control part of the indoor unit of the air conditioner concerning Embodiment 1 recognizes, and a certain human body is a low temperature part. The figure which shows the temperature information of the whole room which the control part of the indoor unit of the air conditioner concerning Embodiment 1 recognizes, and the appearance of the cold air source from a living staircase in the room. The figure which shows the temperature information of the whole room which the control part of the indoor unit of the air conditioner concerning Embodiment 1 recognizes, and the appearance of the cold air source from a blow-by in the room. The flowchart which shows the operation|movement which the control part of the indoor unit of the air conditioner concerning Embodiment 1 pinpoints presence of a cold air source. The flowchart which shows the operation|movement which the control part of the indoor unit of the air conditioner concerning Embodiment 1 pinpoints presence of a human body. The flowchart which the control part of the indoor unit of the air conditioner concerning Embodiment 1 specifies the coldness of the human body by the influence of a cold air source, and sends warm air between a human body and a cold air source. The figure which shows a mode that a control part of the indoor unit of the air conditioner concerning Embodiment 1 sends warm air between a human body and a cold air source. The flowchart which the control part of the indoor unit of the air conditioner concerning Embodiment 1 specifies that the cooling of the human body by the influence of a cold air source has disappeared. The flowchart which shows the operation|movement of separate blowing of the control part of the indoor unit of the air conditioner concerning Embodiment 2. The figure which shows a mode that a control part of the indoor unit of the air conditioner concerning Embodiment 2 sends warm air between a human body and a cold air source.

  An indoor unit of an air conditioner according to an embodiment of the present invention will be described below in detail with reference to the drawings. The present invention is not limited to the embodiments.

Embodiment 1.
FIG. 1 is a perspective view of an indoor unit of an air conditioner according to a first embodiment as viewed from the lower right side. FIG. 2 is a perspective view of the indoor unit of the air conditioner according to the first embodiment as viewed from the front right side.

  The indoor unit 10 receives a request by a user's operation of a remote controller (hereinafter, abbreviated as a remote controller), a remote control signal receiving unit 11, a suction port 12 for sucking indoor air, and blows out conditioned air. And a blowout port 13 for A first vertical wind direction plate 14A and a second vertical wind direction plate 14B that control the vertical wind direction of the air blown to the outlet 13 and a first horizontal wind direction plate 15A and a second vertical wind direction plate 15A that control the left and right wind directions. The left and right wind direction plates 15B are provided. FIG. 1 shows a state in which the first vertical airflow direction vane 14A and the second vertical airflow direction vane 14B are opened, and the first horizontal airflow direction vane 15A and the second horizontal airflow direction vane 15B are visible. FIG. 2 shows a state in which the first vertical wind direction plate 14A and the second vertical wind direction plate 14B are closed.

  The first vertical wind direction plate 14A and the second vertical wind direction plate 14B have a structure that can be individually moved. Further, the first left/right airflow direction plate 15A and the second left/right airflow direction plate 15B are also structured to be individually movable. The first left/right airflow direction plate 15A and the second left/right airflow direction plate 15B are collectively referred to as the left/right airflow direction plate 15. These are individually controlled by the control unit 20 described later. For example, not only the first left/right airflow direction plate 15A and the second left/right airflow direction plate 15B send warm air in the same direction, but the first left/right airflow direction plate 15A sends warm air in the left direction while The control unit 20 controls the first left/right airflow direction plate 15A and the second left/right airflow direction plate 15B individually so that the left/right airflow direction plate 15B blows warm air in the right direction. The direction of the air taken can be controlled. The indoor unit 10 can send not only warm air but also cold air.

  3: is a figure which shows the longitudinal cross section of the indoor unit of an air conditioner in the III-III line of FIG. As shown in FIG. 3, the indoor unit 10 includes a heat exchanger 17 and a fan motor 18 inside. The heat exchanger 17 and the fan motor 18 are provided in an air passage 19 that connects the suction port 12 and the blowout port 13 to each other. When the fan motor 18 rotates, the air in the room is sucked into the indoor unit 10 through the suction port 12. The air sucked into the indoor unit 10 passes through the air passage 19, is heat-exchanged by the high-temperature heat exchanger 17, becomes conditioned air, and is blown out into the room from the air outlet 13 and the left and right wind direction plates 15. It controls the direction of air and warms the space. Further, the indoor unit 10 can adjust the range in which warm air reaches in the space by increasing or decreasing the rotation speed of the fan motor 18.

  FIG. 4 is a diagram illustrating a functional configuration example of the indoor unit of the air conditioner according to the first embodiment. 5: is a figure which shows the structural example of the temperature detection part with which the indoor unit of the air conditioner concerning Embodiment 1 is equipped. As shown in FIG. 4, the indoor unit 10 includes a control unit 20, a temperature detection unit 16, a temperature information reception unit 21, a drive unit 30 that drives the first left/right airflow direction plate 15A, and a second left/right airflow direction. A drive unit 31 that drives the plate 15B, a drive unit 32 that drives the first vertical wind direction plate 14A, a drive unit 33 that drives the second vertical wind direction plate 14B, and a drive unit 34 that drives the fan motor 18. And a drive unit 35 that drives the temperature detection unit drive motor 164.

  As shown in FIGS. 1 to 3, the indoor unit 10 includes a remote control signal receiving unit 11, a suction port 12, a blowout port 13, a first vertical wind direction plate 14A, and a second vertical wind direction plate 14B. The first left/right airflow direction plate 15A, the second left/right airflow direction plate 15B, the heat exchanger 17, and the fan motor 18 are provided, but they are not shown in FIG.

  The control unit 20 specifies the positions of the human body and the cold air source based on the temperature information received by the temperature information receiving unit 21 from the temperature detecting unit 16. In addition, the control unit 20 controls the drive unit 30, the drive unit 31, the drive unit 32, and the drive unit 33 to operate each wind direction plate, and the direction of the air blown out from the indoor unit 10. Adjust the wind direction. Further, the control unit 20 controls the drive unit 34 to rotate the fan motor 18 and increase or decrease the rotation speed of the fan motor 18, thereby adjusting the air volume that is the flow rate of the air blown from the indoor unit 10. . That is, the control unit 20 controls each drive unit, so that the indoor unit 10 can adjust the wind direction and the air volume, and can send warm air.

  The control unit 20 controls the drive unit 35 and operates the temperature detection unit drive motor 164 shown in FIG. 5 to move the infrared radiant energy absorption unit 161 to the left and right to obtain detailed temperature information of the space. it can. The temperature information receiving unit 21 receives the temperature information in the space acquired by the temperature detecting unit 16 and passes the temperature information to the control unit 20. The temperature detection unit 16 detects temperature information of an indoor object and an indoor space. A specific method of detecting the temperature information by the temperature detecting unit 16 will be described later.

  As shown in FIG. 5, the temperature detection unit 16 includes an infrared radiation energy absorption unit 161, a thermoelectromotive force generation unit 162, a temperature information holding unit 163, a temperature detection unit drive motor 164, and a temperature information transmission unit 165. , Is provided.

  FIG. 6 is a diagram showing how the infrared radiant energy absorption unit of the temperature detection unit provided in the indoor unit of the air conditioner according to the first embodiment acquires the temperature information in the vertical direction in the space. FIG. 7: is a figure which shows the example of the viewing angle of the infrared radiation energy absorption part of the temperature detection part with which the indoor unit of the air conditioner concerning Embodiment 1 is equipped. The infrared radiation energy absorption part 161 can absorb infrared radiation energy from a plurality of vertical directions. The infrared radiant energy absorption unit 161 includes, for example, a lens having a curved surface, and absorbs infrared radiant energy emitted from a substance in the space in which the indoor unit 10 is installed. Note that the substance includes gas. Note that the vertical direction and the vertical direction have the same meaning, and the horizontal direction and the horizontal direction have the same meaning.

  The thermoelectromotive force generator 162 is configured by a thermocouple or the like. The thermoelectromotive force generators 162 are arranged in the vertical direction in the temperature detection unit 16 in order to obtain the temperature in the vertical direction in the space finely, that is, with a high spatial resolution, specifically, about 8 to 100 are arranged. ing. Further, the absorption amount of infrared radiant energy at different locations of one infrared radiant energy absorption unit 161 is detected by each of the plurality of thermoelectromotive force generation units 162.

  The temperature information storage unit 163 calculates temperature information indicating the temperature of the space in the vertical direction from the thermoelectromotive force obtained from each thermoelectromotive force generation unit 162, and passes the calculated temperature information to the temperature information transmission unit 165. It should be noted that the content of the temperature information indicating the temperature of the space in the vertical direction may be a list of only temperatures, or a combination of information for identifying each thermoelectromotive force generator 162 and the temperature, and is not particularly limited.

  FIG. 8 is a diagram showing a state in which the temperature detection unit drive motor of the temperature detection unit provided in the indoor unit of the air conditioner according to the first embodiment is driven in the left-right direction to acquire the temperature in the horizontal direction in the space. Is. The temperature detection unit drive motor 164 moves left and right by being driven by the drive unit 35. The infrared radiant energy absorption unit 161 is driven by the temperature detection unit drive motor 164 to move left and right. The temperature information storage unit 163 can calculate the temperature information of the space in which the horizontal angle of the space, that is, the horizontal direction when viewed from the indoor unit 10 is different, by moving the infrared radiation energy absorption unit 161 to the left and right. .

  The temperature information transmitting unit 165 acquires the temperature information held by the temperature information holding unit 163 from the temperature information holding unit 163, and transmits the acquired temperature information to the temperature information receiving unit 21. The temperature information storage unit 163 discards this temperature information after the temperature information is acquired by the temperature information transmission unit 165. After that, the temperature information holding unit 163 newly acquires the thermoelectromotive force from the thermoelectromotive force generation unit 162, calculates the temperature information, and holds the temperature information. In this way, the temperature detecting unit 16 periodically acquires the temperature information in the vertical direction held by the temperature information holding unit 163 from the temperature information receiving unit 21 at short intervals. Thereby, the temperature detection unit 16 can grasp the temperature information in fine increments in the vertical and horizontal directions in the space.

  As described above, the infrared radiant energy absorption unit 161 absorbs the infrared radiant energy emitted from the object, and the thermoelectromotive force generation unit 162 causes the infrared radiant energy absorption unit 161 to generate the heat according to the amount of energy absorbed by the infrared radiant energy absorption unit 161. Generate electricity. Then, the temperature information storage unit 163 calculates temperature information from the obtained thermoelectromotive force, and the temperature information transmission unit 165 transmits the temperature information calculated by the temperature information storage unit 163 to the temperature information reception unit 21 to control the temperature information. The unit 20 can acquire the temperature information of the entire space from the temperature information receiving unit 21 as a thermal image including a plurality of pixels.

  It should be noted that one pixel in the thermal image is temperature information of the thermoelectromotive force obtained from one thermoelectromotive force generation unit 162 when the horizontal angle of the infrared radiant energy absorption unit 161 is fixed. When the number of angles that can be changed in the left-right direction of the infrared radiant energy absorption unit 161 is M and the number of thermocouples is N, one thermal image is an image of M×N pixels.

  The hardware configuration of the indoor unit 10 according to the first embodiment will be described. The control unit 20 of the indoor unit 10 shown in FIG. 4 is realized by a processing circuit. It may be a control circuit including a memory and a CPU (Central Processing Unit) that executes a program stored in the memory. Here, the memory corresponds to a nonvolatile or volatile semiconductor memory such as a RAM (Random Access Memory), a ROM (Read Only Memory), and a flash memory, a magnetic disk, an optical disk, and the like. This control circuit is, for example, the control circuit 200 having the configuration shown in FIG. When the processing circuit is dedicated hardware, the processing circuit is, for example, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination thereof.

  As shown in FIG. 9, the control circuit 200 includes a processor 200a, which is a CPU, and a memory 200b. When implemented by the control circuit 200 shown in FIG. 9, it is implemented by the processor 200a reading and executing a program stored in the memory 200b and corresponding to each process. The memory 200b is also used as a temporary memory in each processing executed by the processor 200a.

  Further, the temperature information receiving unit 21 is composed of a communication circuit. The temperature detection unit 16 includes a sensor such as a thermopile sensor, a thermocouple, and a motor that drives the sensor. Each drive unit is composed of a drive circuit such as an inverter that drives a motor.

  10: is a figure which shows the temperature information of the whole room which the control part of the indoor unit of the air conditioner concerning Embodiment 1 recognizes, and a human body. In order to specify the human body, the control unit 20 acquires a thermal image showing temperature information of the entire room and determines a pixel of interest, that is, a pixel of interest from the thermal image. The temperature difference between the temperature of the pixel of interest and the temperatures of eight adjacent pixels on the left, right, top, and bottom of the pixel of interest is calculated. If the temperature difference is within the threshold, the control unit 20 extracts the target pixel as a human body pixel estimated to be a human body. When the extracted human body pixels are grouped within a certain range, the control unit 20 determines whether this group of human body pixels is a human body shape. The control unit 20 estimates that the set of extracted human body pixels is the human body when the group of the human body pixels has a temperature close to that of the human body, for example, in the range of 35° C. to 40° C. A method of determining whether the shape of the human body is described later.

  11: is a figure which shows the temperature information of the whole room which the control part of the indoor unit of the air conditioner concerning Embodiment 1 recognizes, and a certain human body is a low temperature part. The specific method of estimating the human body is not particularly limited in the embodiments of the present invention. For example, even if there is a low temperature part in a part of the human body, the control unit 20 presumes it as the human body if the result of the judgment excluding the part of the low temperature part matches the judgment criteria of the human body in order to identify the human body. To do. Alternatively, if a group of pixels of a part of the low temperature part and the temperature of the human body is a human shape, it is presumed to be a human body.

  FIG. 12: is a figure which shows the temperature information of the whole room which the control part of the indoor unit of the air conditioner concerning Embodiment 1 recognizes, and the state where the cold air source from a living staircase exists in a room. FIG. 13 is a diagram showing temperature information of the entire room recognized by the control unit of the indoor unit of the air conditioner according to the first embodiment, and a state in which there is a cold air source from the blow-through in the room. The temperature of the living stairs and the stairwell is lower than the ambient temperature. The living staircase and the stairwell are composed of a group of at least 10 or more pixels.

  A method of estimating that a cold air source exists will be described. First, the control unit 20 grasps temperature information of the entire room. Next, the control unit 20 determines that the group of pixels having a temperature lower than a certain temperature is a cold air source if the pixels having a temperature lower than the certain temperature by a certain degree are present as compared with the surrounding pixels. presume. For example, the control unit 20 estimates that the cold air source is present when 10 or more pixels having a temperature lower than the ambient temperature by 10 degrees or more continuously exist.

  The reason why the cold air source is used when the pixels having a temperature lower than a certain temperature are gathered to some extent is that a small low temperature part such as ice or a cold drink is not estimated to be the cold air source. This is because, in the embodiment of the present invention, a cold air source is assumed to be a place that can be a large low temperature source, such as a living staircase or a stairwell.

  FIG. 14 is a flowchart showing an operation in which the control unit of the indoor unit of the air conditioner according to the first embodiment identifies the presence of the cold air source. The controller 20 acquires the temperature of the entire space detected by the temperature detector 16 from the temperature information receiver 21 (step S11). When the control unit 20 determines that there are some pixels having a temperature lower than a certain temperature by a certain amount as compared with the surrounding pixels (step S12, Yes), it estimates that there is a cold air source (step S13). Further, when it is determined No in step S12, the control unit 20 returns the process to step S11. A specific method of comparing surrounding pixels is not particularly limited in the embodiment of the present invention. For example, there is a method of calculating an average value of temperatures from temperature information of the entire space and searching for a pixel having a temperature 10 degrees lower than the average value.

  FIG. 15 is a flowchart showing an operation in which the control unit of the indoor unit of the air conditioner according to the first embodiment identifies the presence of a human body. The controller 20 acquires the temperature of the entire space detected by the temperature detector 16 from the temperature information receiver 21 (step S21). The control unit 20 groups pixels having a temperature difference within a certain range, that is, treats pixels having a temperature difference within a certain range as one group, as compared with surrounding pixels. When the group of pixels corresponds to the shape of the human body by the method of detecting the shape of the human body described later, it is detected that the group is the shape of the human body (step S22, Yes). Further, when the group of these pixels has a temperature close to the temperature of the human body (Yes in step S23), it is estimated that the human body exists in the space (step S24). Further, even if it is estimated in step S22 that the human body is not the shape (step S22, No), if it is the human body except for the low temperature part of the human body (step S25, Yes), it is estimated as the human body. In addition, when it determines with No in step S23 and step S25, the control part 20 returns a process to step S21.

  The specific method of collecting pixels is not particularly limited in the embodiments of the present invention. For example, there is a method in which pixels are grouped by drawing an envelope curve in a portion where the temperature difference is within a certain range by image processing and enclosing it with the envelope curve. A specific method for detecting whether the human body is present is not particularly limited in the embodiments of the present invention. For example, when there are clustered pixels in the image, the clustered pixels have a temperature within the range of 35 to 40 degrees and do not affect all the pixels so that the distance or orientation of the human body to be detected is not affected. In contrast, there is a method of detecting as a human body when it exists in a specific ratio.

  FIG. 16 is a flowchart in which the control unit of the indoor unit of the air conditioner according to the first embodiment identifies the coldness of the human body due to the influence of the cold air source and sends warm air between the human body and the cold air source. FIG. 17 is a diagram showing how warm air is sent between the human body and the cold air source by the control unit of the indoor unit of the air conditioner according to the first embodiment. The control unit 20 executes steps S21 to S25 of FIG. 15 to detect a human body (step S31). When the human body is detected in step S31 (step S32 (step S22, Yes), the control unit 20 determines from the temperature information of the entire space acquired from the temperature information receiving unit 21 that a part of the detected human body has a low temperature part. (Step S33, Yes) Here, the low temperature part determines the temperature information of 34 to 35 degrees and determines the temperature of the human body to be 36 to 37 degrees, but the embodiment of the present invention is not limited to this. By performing steps S11 to S13 of FIG. 14, the unit 20 detects that there is a cold air source on the low temperature part side of the human body (step S34, Yes), and the low temperature part of the human body determined in step S33 and the step S34. When the temperature difference from the cold air source detected in step S35 is less than or equal to the threshold value (step S35, Yes), it is estimated that the human body is cold due to the effect of the cold air source (step S36). If yes (step S37, Yes), it is estimated that the human body is cold, and air conditioning control is performed to send warm air between the human body and the cold air source so as to block the cold air from the cold air source (step S38). If No is determined in steps S32 to S35 and step S37, the control unit 20 returns the process to step S31.

  The condition that the human body is kept cold for a certain period of time is that the control unit 20 cools the human body when the user temporarily cools a part of the human body with ice or the like. This is because it is not estimated that there is. In order to confirm that the human body of the user is kept cold for a certain period of time, the control unit 20 calculates a flag indicating that the human body is cold, and holds the flag to hold the human body. The state of is determined at regular intervals.

  FIG. 18 is a flowchart for identifying that the control unit of the indoor unit of the air conditioner according to the first embodiment determines that the cooling of the human body due to the influence of the cold air source has disappeared. When the indoor unit 10 is performing the process of sending warm air between the human body and the cold air source so as to block the cold air from the cold air source (Yes in step S41), the control unit 20 starts from step S11 in FIG. By performing step S13, it is detected that the cold air source has disappeared on the low temperature side of the human body (step S42, No). Further, when the low temperature part also disappears in a part of the human body (step S43, No), the control unit 20 determines that the human body is no longer cooled by the influence of the cold air source (step S44). The control unit 20 stops the air conditioning control that sends hot air between the human body and the cold air source so as to block the cool air from the cold air source, and performs the normal heating control that sends the hot air directly to the human body (step S45). .. If the determination is No in step S41, the determination is No in step S42, and the determination is Yes in step S43, the control unit 20 returns the process to step S41.

  Although the cold air source is still present, when the low temperature part disappears in a part of the human body, the control unit 20 does not change the air conditioning control for sending warm air between the human body and the cold air source. The process of sending warm air between the human body and the cold air source may warm the human body and remove the low temperature part.Therefore, if the process of warm air is changed, a part of the human body may become cold again. Because there is.

  Further, even if the cold air source does not exist but the human body has a low temperature part, the control unit 20 does not change the air conditioning control for sending warm air between the human body and the cold air source. This is because the cold air source may temporarily disappear due to an obstacle or the like, and the cold air source may exist again.

  The series of operations of the indoor unit 10 described above are as follows. The control unit 20 estimates a first region where the cold air source exists and a second region which is a part of the human body from the thermal image acquired by the temperature detection unit 16. The control unit 20 calculates the difference between the temperature of the first area and the temperature of the second area, and when the difference is equal to or less than the threshold value, the indoor unit 10 determines that the first area and the second area are separated from each other. The warm air is sent toward the space to prevent the human body from being cooled by the cold air source. Further, in the case where the control unit 20 is controlling the blowing of warm air and the difference between the temperature of the first region and the temperature of the second region is larger than the threshold value, the first region and the second region Release the control to send hot air between and.

  Further, the control unit 20 periodically monitors the detected cold air source and the human body when the indoor unit 10 sends hot air between the cold air source and the cold part of the human body, and the cold air source and the human body are separated from each other. When the distance is a certain distance or more, the air conditioning control for sending warm air between the human body and the cold air source is stopped. The method of determining that the human body and the cold air source are separated by a certain distance or more is not particularly limited in the embodiment of the present invention. For example, the set of pixels of the cold air source and the set of pixels of the human body are calculated how many pixels are apart from the center pixel of the set of each pixel, and when they are separated by more than a threshold value in the vertical direction, the horizontal direction or the diagonal direction, For example, the control unit 20 may release the air conditioning control that sends warm air between the human body and the cold air source.

  As described above, in the present embodiment, the indoor unit 10 includes the control unit 20, the temperature information receiving unit 21, the temperature detecting unit 16, and each drive unit. The control unit 20 identifies the human body and the cold air source from the temperature information composed of a thermal image composed of a plurality of pixels, and estimates that the human body is cold due to the influence of the cold air source. The indoor unit 10 performs air conditioning control that sends warm air between the human body and the cold air source so as to block the cold air from the cold air source, thereby suppressing the cold air from the cold air source in the space from hitting the human body. it can. As a result, even if a part of the human body is cold due to a cold air source from the space such as a living staircase or a stairwell, the user can eliminate the coldness of the human body by sending warm air between the human body and the cold air source. . Also, even if the cold air source disappears and the coldness of the human body is resolved, or even if the cold air source and the human body are separated, by returning to normal air blowing without continuing to send warm air between the human body and the cold air source, , No need to blow unnecessary air.

Embodiment 2.
FIG. 19 is a flowchart showing the operation of the control unit of the indoor unit of the air-conditioning apparatus according to the second embodiment for performing different blowing. FIG. 20 is a diagram showing how the control unit of the indoor unit of the air conditioner according to the second embodiment sends warm air between the human body and the cold air source. Since FIG. 19 and FIG. 16 are common from step S31 to step S37, common parts will be omitted and different parts will be mainly described. The control unit 20 determines whether a person exists in the space other than the person A who has already been detected (step S51, Yes). The control unit 20 carries out steps S33 to S37 for the newly detected person Otsu 41 (step S52). The control unit 20 determines whether the second party 41 is affected by the cold air source 42 (step S53). When the Otsu 41 is affected by the cold air source 42 (Yes at Step S53), the control unit 20 instructs the Otsu 41 to use either one of the first vertical wind direction plate 14A or the second vertical wind direction plate 14B and the first vertical wind direction plate 14B. Using one of the left and right airflow direction vanes 15A or the second left and right airflow direction vanes 15B, hot air is blown between the B 41 and the cold air source 42 so as to block the cold air from the cold air source 42. The control unit 20 does not send the warm air to the Otsu 41 between the instep 40 and the cold air source 42 so as to block the cool air from the cold air source 42, or the first up/down wind direction plate 14A or the second up/down air direction plate. Hot air is blown in using one of 14B and the 1st horizontal airflow direction board 15A or the other of the 2nd horizontal airflow direction board 15B (step S54).

  When the Otsu 41 is not affected by the cold air source 42 (step S53, No), the Otsu 41 is provided with one of the first vertical wind direction plate 14A or the second vertical wind direction plate 14B and the first horizontal airflow direction plate 15A or Normal heating control for sending warm air directly to the human body is performed using one of the second left and right wind direction plates 15B. The instep 40 has a first up/down wind direction plate 14A or a second up/down air flow direction plate between the instep 40 and the cold air source 42 that does not send warm air to the Otsu 41 so as to block the cold air from the cold air source 42. 14B and one of the first left and right airflow direction vanes 15A or the second left and right airflow direction vanes 15B are used to perform blow-in control for sending hot air (step S55). Other components are the same as those in the first embodiment. Note that FIG. 20 shows a case where the instep 40 is affected by the cold air source 42 and the second party 41 is not affected by the cold air source 42. Further, a region where a person who is not affected by the cold air source 42 exists is called a third region, and a region where a person who is affected by the cold air source 42 exists is called a fourth region.

  As described above, in the present embodiment, even when there are two people in the space, the first vertical wind direction plate 14A, the second vertical wind direction plate 14B, the first left/right air direction plate 15A, and the second left/right air direction plate. Blowing can be performed by controlling 15B. Thereby, it is possible to perform the blowing control according to the state of each user. Further, although the case where the number of users is two is described in the present embodiment, the blowing control can be performed even when the number of users is three or more. When there are three or more people, the user affected by the cold air source 42 is given priority to send warm air.

  The configurations described in the above embodiments are examples of the content of the present invention, and can be combined with another known technique, and the configurations of the configurations are not departing from the scope of the present invention. It is also possible to omit or change parts.

  DESCRIPTION OF SYMBOLS 10 Indoor unit, 11 Remote control signal receiving part, 12 Suction port, 13 Blow-out port, 14A 1st vertical wind direction plate, 14B 2nd vertical wind direction plate, 15 Left-right wind direction plate, 15A 1st left-right wind direction plate, 15B 2nd Left and right wind direction plate, 16 temperature detection unit, 17 heat exchanger, 18 fan motor, 19 air passage, 20 control unit, 21 temperature information receiving unit, 30, 31, 32, 33, 34, 35 drive unit, 40 instep, 41 Otsu, 42 Cold air source, 161 Infrared radiation energy absorption part, 162 Thermoelectromotive force generation part, 163 Temperature information holding part, 164 Temperature detection part drive motor, 165 Temperature information transmission part, 200 Control circuit, 200a Processor, 200b Memory.

Claims (6)

A temperature detection unit that acquires a thermal image of the space where the indoor unit is installed,
From the thermal image, a first region in which a cold air source exists and a second region that is a low temperature part of the human body are estimated, and the cold air source is on the low temperature part side of the human body, and the first region is present. And a difference between the temperature of the second region and the temperature of the second region is less than or equal to a threshold value, a control unit that controls to blow hot air toward the first region and the second region,
An air conditioner indoor unit equipped with. The control unit is
The air conditioner according to claim 1, wherein the control for feeding the warm air is canceled when the control for feeding the hot air is being performed and the difference is larger than the threshold value. Indoor unit. A first vertical wind direction plate and a second vertical wind direction plate for controlling the wind direction of the warm air, each of which is independently operable in the vertical direction;
A first left/right airflow direction plate and a second left/right airflow direction plate, each of which is independently operable in the left/right direction and controls the wind direction of the warm air;
The control unit estimates, from the thermal image, a third region in which a person who is not affected by the cold air source exists and a fourth region in which a person who is affected by the cold air source exists. Then
The warm air is blown into the third region by the first up/down airflow direction plate and the first left/right airflow direction plate, and the warm air is sent between the second region and the first region of the fourth region. The indoor unit of the air conditioner according to claim 1 or 2, wherein the second upper and lower airflow direction plates and the second left and right airflow direction plates perform separate blowing of the warm air. The control unit is
When one said 4th area|region and two or more said 3rd area|regions exist in the said space, the said 1st up-and-down is carried out to one said 3rd area|region of 2 or more said 3rd area|regions. The warm air is sent by the wind direction plate and the first left/right air direction plate, and the second up/down air direction plate and the first air flow direction plate and the first area are provided between the second area and the first area of the one fourth area. The indoor unit of the air conditioner according to claim 3, wherein the warm air is sent by two left and right airflow direction plates.   When the distance between the first area and the second area is greater than or equal to a threshold value, the control of blowing the warm air between the first area and the second area is canceled. The indoor unit for an air conditioner according to claim 1, wherein the indoor unit is an air conditioner. The temperature detection unit,
An infrared radiant energy absorption unit that absorbs infrared radiant energy,
Generating thermoelectromotive force according to the amount of infrared radiant energy absorbed from the infrared radiant energy absorption unit, a plurality of thermoelectromotive force generators arranged in the vertical direction,
A temperature information holding unit that calculates temperature information from the thermoelectromotive force obtained from the thermoelectromotive force generation unit,
A temperature detection unit drive motor for driving the infrared radiation energy absorption unit left and right,
Equipped with
The interior of the air conditioner according to claim 1, wherein the control unit controls the temperature detection unit drive motor to drive the infrared radiation energy absorption unit to acquire the thermal image. Machine.

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