JP2021050861A - Air conditioning device - Google Patents

Abstract

To solve such the problem that it is difficult to evacuate the air that has passed through a room temperature sensor upward when the room temperature sensor is positioned below an electric product in a utilization unit of an air conditioning device.SOLUTION: A utilization unit (10) of an air conditioning device (1) includes a housing (11) and a room temperature sensor (31). The room temperature sensor (31) is disposed inside the housing (11). A ventilation flow passage (W1) is disposed inside the housing (11) and above the room temperature sensor (31) so that the air surrounding the room temperature sensor (31) flows upward from the room temperature sensor (31).SELECTED DRAWING: Figure 4

Description

Regarding an air conditioner equipped with a utilization unit.

The unit for using the air conditioner is usually arranged indoors, and a temperature sensor (room temperature sensor) for measuring the temperature in the room is arranged inside the housing. As the room temperature sensor is preferably placed at a position that is not easily affected by the temperature-controlled air inside the housing, there is an example in which the room temperature sensor is placed under the electrical component at the end of the housing (Patent Document). 1: WO2017 / 138063).

In the unit using the air conditioner, when the room temperature sensor is under the electrical components, it is difficult to exhaust the air that has passed through the room temperature sensor to the upper part.

The air conditioner of the first aspect includes a utilization unit. The utilization unit has a housing and a room temperature sensor. The room temperature sensor is arranged inside the housing. A ventilation flow path is arranged inside the housing and above the room temperature sensor so that the air around the room temperature sensor flows above the room temperature sensor.

In the air conditioner of the first aspect, since the air flow path is arranged above the room temperature sensor, warm air is less likely to be trapped around the room temperature sensor, and accurate room temperature measurement can be performed.

The air conditioner of the second aspect is the device of the first aspect, and the utilization unit further includes a heat exchanger. The heat exchanger is located inside the housing. The upper space of the ventilation flow path communicates with the space around the heat exchanger or the space around the refrigerant pipe.

In the air conditioner of the second aspect, the upper space of the ventilation flow path communicates with the space around the heat exchanger or the space around the refrigerant pipe, so that the warm air is the space around the heat exchanger. Or, it easily diffuses into the space around the refrigerant pipe.

The air conditioner of the third aspect is the device of the first aspect or the second aspect, and further has an electrical component and a plate portion. The electrical components are located inside the housing, above the room temperature sensor. The plate covers the electrical components. The ventilation flow path is formed by a recess provided in the plate portion.

In the air conditioner of the third aspect, since the air flow path is formed by the recessed portion provided in the plate portion, it is not necessary to create a further space.

The air conditioner of the fourth aspect is the device of the third aspect, and the air flow path is formed by the recessed portion of the plate portion and the wall surface of the housing.

The air conditioner of the fifth aspect is the device of the third aspect or the fourth aspect, and the ventilation flow path is arranged so as to overlap with the room temperature sensor in the top view.

The air conditioner of the sixth aspect is any of the devices of the first aspect to the fifth aspect, and further has an active species generating unit. The active part generation part is arranged inside the housing. An active species generating part is arranged in the middle of the ventilation flow path.

In the air conditioner of the sixth aspect, since the active species generation unit is arranged in the air flow path, the active species are smoothly generated, and the generated active species are discharged to the outside of the utilization unit.

The air conditioner of the seventh viewpoint is any of the devices of the first to sixth viewpoints, and the air intake hole is arranged on the side surface of the housing, and the air intake hole and the room temperature sensor communicate with each other. There is.

In the air conditioner of the seventh aspect, since the air intake hole is arranged on the side surface of the housing, the air flow path from the outside of the housing to the room temperature sensor is secured without damaging the design.

The air conditioner of the eighth aspect is any of the devices of the first to seventh aspects, and the utilization unit further has a fan. The fan is located inside the housing. The fan is for passing air through the heat exchanger. The utilization unit is configured so that the air around the room temperature sensor flows upward through the ventilation flow path with the fan stopped.

In the air conditioner of the eighth aspect, when the thermostat is turned off during the heating operation, the air around the room temperature sensor flows through the ventilation flow path, so that the room temperature sensor can correctly measure the room temperature, which is appropriate. It is possible to shift from the thermo-off state to the thermo-on state.

It is a perspective view of the appearance of the utilization unit 10. It is a vertical sectional view of the utilization unit 10. It is a perspective view of the electrical component assembly 20. It is a perspective view of the electrical component assembly 20. In addition, the ventilation flow path W1 is shown. It is a perspective view of the electrical component assembly 20. The plate portion 32 is removed and shown. It is a figure which shows the arrangement of the structural member 111, the drain pan 13, and the electrical component assembly 20. It is a figure which shows the arrangement of the plate part 32a and the room temperature sensor 31a of the electrical component assembly 20a in the utilization unit 10a of the conventional air conditioner 1a.

<First Embodiment>
(1) Overall Configuration The air conditioner 1 of the present embodiment includes a utilization unit 10, a heat source unit, and a refrigerant pipe connecting the utilization unit and the heat source unit, and constitutes a vapor compression refrigeration cycle.

The air conditioned device 1 performs air conditioned operations such as cooling, heating, dehumidifying, and blowing air in the space where the utilization unit is arranged.

A perspective view of the appearance of the utilization unit 10 is shown in FIG. 1, and a vertical sectional view is shown in FIG.

The utilization unit 10 of the air conditioner 1 is a wall-mounted air conditioner whose rear surface is hung on a wall in the room. In each figure, when the utilization unit 10 is hung on a wall, the directions when the utilization unit 10 is viewed toward the utilization unit 10 are indicated by front, rear, up, down, right, and left arrows.

The utilization unit 10 includes a housing 11, a heat exchanger 12, a fan 14, a drain pan 13, an electrical component assembly 20, and a flap 15. The heat exchanger 12, the fan 14, the drain pan 13, and the electrical component assembly 20 are arranged inside the housing 11, and the flap 15 is arranged at the outlet B1 of the housing 11.

The heat exchanger 12 is arranged inside the housing 11. The refrigerant flowing through the refrigerant circuit flows inside the heat exchanger 12. The refrigerant exchanges heat with air. When the fan 14 rotates, air is taken into the inside of the housing 11 from the air suction port B2 at the top of the housing 11, passes through the heat exchanger 12 and the fan 14, and is blown out at the bottom of the housing 11. It is blown out from B1 to the outside of the housing 11. The direction of the blown air is controlled by the position of the flap 15.

(2) Detailed configuration (2-1) Electrical component assembly 20
As shown in FIGS. 3 to 5, the electrical component assembly 20 includes a first electrical component 21, a room temperature sensor 31, an active species generating section 35, a second electrical component 22, a first support section 23, and a second support. Including part 24.

The active species generation unit 35, the first electrical component 21, and the room temperature sensor 31 are attached to the first support unit 23. As shown in FIG. 6, the first support portion 23 is fixed to the structural member 111 of the housing 11.

As shown in FIG. 5, the first electrical component 21 includes a printed circuit board and electrical components arranged on the printed circuit board. The first electrical component 21 includes a drive circuit for driving the fan motor.

A plate portion 32 that covers the first electrical component 21 is attached to the first support portion 23. The plate portion 32 is made of metal or resin. The plate portion is preferably made of metal. This is because metal has better heat transfer performance than resin. A recess 33 is formed in the plate portion 32. A ventilation flow path W1 is formed in the recessed portion 33. In other words, a ventilation flow path W1 is formed between the recess 33 and the inner wall on the right side surface of the housing 11.

A room temperature sensor 31 is arranged directly below the recessed portion 33. In other words, the airflow flow path W1 corresponding to the recessed portion 33 and the room temperature sensor 31 overlap in top view. The room temperature sensor 31 is a thermistor. The room temperature sensor 31 is a temperature sensor that measures the temperature around the sensor.

As shown in FIG. 1, an air intake hole 36 is formed on the right side surface of the housing 11. The air outside the utilization unit 10 enters the inside of the housing 11 through the air intake hole 36 and reaches the room temperature sensor 31. The air that has reached the room temperature sensor 31 passes through the ventilation flow path W1 of the recessed portion 33 formed in the plate portion 32, the active species generating portion 35, and further, the space S2 around the refrigerant pipe and heat exchange. It reaches the space S1 around the vessel. Further, when the fan 14 is stopped, air is discharged from the space S2 around the refrigerant pipe or the space S1 around the heat exchanger from the air suction port B2 at the upper part of the housing 11. It flows out of 11. Here, the refrigerant pipe means a refrigerant pipe that connects the heat exchanger 12, the utilization side expansion valve (not shown), and the refrigerant pipe outside the utilization unit 10 to each other. As shown in FIG. 6, the position of the space S2 around the refrigerant pipe is roughly a space between the electrical component assembly 20 and the heat exchanger 12 (not shown in FIG. 6).

The active species generation unit 35 is attached to the first support unit 23. The active species generating unit 35 is arranged on the recessed portion 33 of the plate portion 32. The active species generating unit 35 has a flow path through which air flows, and has an opening on the surface through which air flowing into the flow path passes and an opening through which air passing through the internal flow path flows out. ing. The active species generation unit 35 applies a voltage to the air passing through the internal flow path to generate active species.

The air rising through the ventilation flow path W1 passes through the inside through the opening at the lower part of the active species generating section 35 and becomes air containing the active species. The air containing the active species goes out of the active species generating section 35 through the upper opening of the active species generating section 35, and reaches the space S2 around the refrigerant pipe and the space S1 around the heat exchanger.

The second electrical component 22 includes an operation switch, a display unit, an electromagnetic wave receiving unit, and a buzzer.

As shown in FIG. 1, the second electrical component 22 is arranged on the right side of the outlet B1, and a part of the second electrical component 22 is arranged on the outer surface of the housing 11.

The first electrical component 21 is attached to the first support portion 23.

The second electrical component 22 is attached to the second support portion 24. As can be seen from FIG. 5 and the like, the second support portion 24 has a hinge structure and is attached to the first support portion 23.

(3) Features (3-1)
The air conditioner 1 of the present embodiment includes a utilization unit 10, and the utilization unit 10 has a housing 11 and a room temperature sensor 31. The room temperature sensor 31 is arranged inside the housing 11. A ventilation flow path W1 is arranged inside the housing 11 and above the room temperature sensor 31 so that the air around the room temperature sensor 31 flows above the room temperature sensor.

In the air conditioner 1 of the present embodiment, since the ventilation flow path W1 is arranged above the room temperature sensor 31, warm air is unlikely to stay around the room temperature sensor, and accurate room temperature measurement can be performed.

(3-2)
In the utilization unit 10 of the air conditioner 1 of the present embodiment, the upper space of the ventilation flow path W1 communicates with the space S1 around the heat exchanger or the space S2 around the refrigerant pipe.

In the air conditioner 1 of the present embodiment, the upper space of the ventilation flow path W1 communicates with the space S1 around the heat exchanger or the space S2 around the refrigerant pipe, so that the warm air is the heat exchanger. It is easy to diffuse into the space S1 around the refrigerant or the space S2 around the refrigerant pipe.

(3-3)
In the utilization unit 10 of the air conditioner 1 of the present embodiment, the first electrical component 21 is arranged above the room temperature sensor 31. Immediately above the room temperature sensor 31, a ventilation flow path W1 formed by a recess 33 of the plate portion 32 covering the first electrical component 21 is arranged. In other words, the ventilation flow path W1 is arranged so as to overlap the room temperature sensor 31 in the top view.

Due to such an arrangement, the air around the room temperature sensor 31 tends to move upward via the ventilation flow path W1.

As for the ventilation flow path W1, since the ventilation flow path W1 is formed by the recessed portion 33 provided in the plate portion 32, it is not necessary to create a further space.

In other words, the ventilation flow path W1 is composed of a recessed portion 33 of the plate portion 32 and a wall surface of the housing 11.

(3-4)
In the utilization unit 10 of the air conditioner 1 of the present embodiment, the active species generating unit 35 is further arranged above the ventilation flow path W1 formed by the recessed portion 33 of the plate portion 32.

Since the active species generating unit 35 is arranged in the ventilation flow path W1, the active species are smoothly generated, and the generated active species are discharged to the outside of the utilization unit 10.

(3-5)
FIG. 7 is a perspective view of the vicinity of the electrical component assembly 20a of the utilization unit 10a of the conventional air conditioner 1a. In the air conditioner 1a, the electrical component and the plate portion 32a covering the electrical component covers the upper part of the room temperature sensor 31a, and there is almost no space for the air around the room temperature sensor 31a to escape to the upper part.

Electric components and fan motors generate heat around the electrical components and the plate portion 32a, and air rarely circulates due to the rotation of the fan, so heat tends to accumulate.

In particular, when the indoor fan is stopped or rotates at a low speed during the thermo-off operation, the air flow is stagnant inside the housing, the room temperature sensor 31a is affected by heat, and it becomes difficult to accurately grasp the indoor temperature.

In the conventional air conditioner 1a, when the thermo-off operation is performed during the heating operation, the temperature measured by the room temperature sensor 31a becomes higher than the room temperature, and even when the room temperature is low, it is quite difficult to perform the thermo-off operation to the normal operation. There is a problem that it will not return to.

The air conditioner 1 of the present embodiment addresses such a problem, and a ventilation flow path W1 is provided in a plate portion 32 that covers the first electrical component 21. As described above, the air around the first electrical component 21 and the plate portion 32 is easily heated, and therefore the air in the ventilation flow path W1 is also easily heated. The heated air easily rises, and if there is a circulation path in the upper part, it easily rises. When the air in the ventilation flow path W1 moves to the upper part, the air in the vicinity of the room temperature sensor 31 directly below rises in the space, and the air easily flows.

In the utilization unit 10 of the air conditioner 1 of the present embodiment, since the air intake hole 36 is further arranged on the side surface of the housing 11, the utilization unit 10 is placed in the space where the air rises near the room temperature sensor 31. There is a flow of air into which the outside air flows in. Then, the room temperature sensor 31 can measure the room temperature more accurately.

The air conditioner 1 of the present embodiment can accurately measure the room temperature even when the thermo-off operation is performed during the heating operation, and can return from the thermo-off operation to the normal operation at an appropriate timing.

Although the embodiments of the present disclosure have been described above, it will be understood that various modifications of the forms and details are possible without departing from the purpose and scope of the present disclosure described in the claims. ..

1 Air conditioner 10 Utilization unit 11 Housing 111 Structural member 12 Heat exchanger 13 Drain pan 14 Fan 20 Electrical component assembly 21 (1st) Electrical component 22 2nd electrical component 23 1st support 24 2nd support 31 Room temperature Sensor 32 Plate 33 Recessed 35 Active species generator 36 Air intake hole S1 Space around heat exchanger S2 Space around refrigerant piping W1 Ventilation flow path

WO2017 / 138603

Claims (8)

An air conditioner (1) equipped with a utilization unit (10).
The utilization unit is
Housing (11) and
A room temperature sensor (31) arranged inside the housing and
Have,
A ventilation flow path (W1) is arranged inside the housing and above the room temperature sensor so that the air around the room temperature sensor flows above the room temperature sensor.
Air conditioner. The utilization unit further has a heat exchanger (12) inside the housing.
The upper space of the ventilation flow path communicates with the space around the heat exchanger (S1) or the space around the refrigerant pipe (S2).
The air conditioner according to claim 1. The utilization unit further
Inside the housing, the electrical components (21) arranged above the room temperature sensor,
A plate portion (32) that covers the electrical components and
Have and
The ventilation flow path is formed by a recess (33) provided in the plate portion.
The air conditioner according to claim 1 or 2. The ventilation flow path is formed by a recessed portion of the plate portion and a wall surface of the housing.
The air conditioner according to claim 3. The ventilation flow path is arranged so as to overlap the room temperature sensor in a top view.
The air conditioner according to claim 3 or 4. The utilization unit further has an active species generation unit (35) inside the housing.
The active species generation unit is arranged in the middle of the ventilation flow path.
The air conditioner according to any one of claims 1 to 5. An air intake hole (36) is arranged on the side surface of the housing, and the air intake hole and the room temperature sensor communicate with each other.
The air conditioner according to any one of claims 1 to 6. The utilization unit further has a fan (14) for flowing air through the heat exchanger inside the housing.
With the fan stopped, the air around the room temperature sensor is configured to flow upward through the ventilation flow path.
The air conditioner according to any one of claims 2 to 7.

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