JP2530023Y2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an air conditioner having a hot air blowing function, and more specifically, an outdoor unit having a combustion unit and an indoor unit having a blowing unit. And an indoor / outdoor separate type air conditioner.

[Conventional technology]

An example of a conventional air conditioner as described above will be described below with reference to FIG. 2 and FIG.

The air conditioner 1 'has the same pipeline configuration as the air conditioner 1 according to the embodiment of the present invention shown in FIG. That is, a heat exchanger for heating the indoor air built in the indoor unit 7 '
15 and a heat exchanger 8 for heating hot water built in the outdoor unit 6 '
Are connected by a water pipe 2 and a water pipe 3 to form a circulation path. The circulation path contains warm water (antifreeze) as a heat medium fluid.

A burner 9 is disposed below the heat exchanger 8 on the combustion section 4 side, and burns gas from the gas pipe 11 to heat the heat exchanger 8.
The warm water passing through the inside is heated. Further, a blower fan 13 and a motor 12 for blowing hot combustion gas toward the heat exchanger 8 are provided below the burner 9. A blower fan 17 is provided near the heat exchanger 15 on the blower section 5 side.
A motor 16 is provided to blow indoor air toward the heat exchanger 15 and to blow warm air into the room by heat transfer from heated hot water. Further, a hot water temperature sensor 14 for detecting the temperature of the heated hot water is provided at the end of the water pipe 3 on the heat exchanger 8 side, and at the end of the water pipe 2 on the heat exchanger 15 side in FIG. A hot water sensor 24 (not shown) is provided. Reference numeral 10 is a proportional control valve for adjusting the gas amount.

Such an air conditioner 1 'is operated by turning on an operation switch 23 provided in the indoor unit 7'.
The relay 25 of 19 'is energized and the pilot lamp 26 is turned on, and a combustion instruction is issued to the outdoor controller 20' of the outdoor unit 6 '. Subsequently, the outdoor controller 20 '
The proportional control valve 10 controls the gas flow rate and the number of revolutions of the motor 12 so that a combustion instruction is issued to the combustion unit 4 and the hot water temperature on the exit side of the heat exchanger 8 detected by the hot water temperature sensor 14 is maintained at the set temperature. I do.

Then, on the outdoor unit 7 'side, the temperature of the hot water heated to the set temperature is lowered by the heat exchanger 15, and the temperature at that time is detected by the hot water sensor 24. Therefore, the relay 21 is switched stepwise based on the temperature detected by the hot water sensor 24,
The rotation speed of the motor 16 is controlled. The air conditioner 1 '
Is controlled to maintain the room temperature at the set temperature of the room temperature set in the temperature setting switch 22. Reference numeral 18 is a room temperature sensor for detecting room temperature.

[Problems to be solved by the invention]

However, in the air conditioner 1 ′, the temperature of the hot water supplied from the outdoor unit 6 ′ is constant, and the rotation speed of the motor 16 of the blower unit 5, that is, the amount of the blown air is reduced to the temperature of the hot water on the exit side of the heat exchanger 15. Therefore, for example, when the room temperature is low, the temperature is lowered by the temperature of the hot water at the exit side of the heat exchanger 15.
Thereby, the amount of air blown by the blower fan 17 increases, so that the temperature of the blown hot air decreases. For this reason, in some cases, there is a problem that the warm air feels chilly and the user feels discomfort.

Therefore, an object of the present invention is to provide an air conditioner having a high heating capacity without lowering the temperature at which hot air is blown out.

[Means for solving the problem]

In order to achieve the above object, the main means adopted by the present invention is to form a circulation path with a pipe containing a heat medium fluid, and to heat the heat medium fluid in the pipe near one end of the circulation path. A medium heating means is provided, and a blowing means for heating the heated medium to the room air from the heated heat medium fluid is provided near the other end of the circulation path, and the heated room air is used as warm air in the room. And a signal based on a required heating amount calculated according to a difference between a room temperature detected by the room temperature sensor and a preset set temperature. Heating control means for controlling the heating medium heating means by outputting to the heating medium heating means based on a signal output from the heating control means to the heating medium heating means. Blower control means for controlling the blower means; And an operation stopping means for stopping the operation of the air blowing means until the temperature of the heat medium fluid reaches a predetermined temperature by the heat medium heating means when the air conditioner is started. .

[Action]

According to the present invention, the heating state of the heating medium fluid is controlled by the heating medium heating means according to the difference between the room temperature detected by the room temperature sensor and a preset set temperature, and air is blown according to the heating state at that time. Means are controlled. When the operation of the air conditioner is started, the operation of the air blowing means is stopped until the temperature of the heat medium fluid reaches a predetermined temperature. Therefore, still cool air is blown out by the air blowing means to give a sense of cold wind to a human. The disadvantage of giving

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings to facilitate understanding of the present invention. FIG. 1 is a schematic circuit diagram showing a circuit configuration of an air conditioner according to an embodiment of the present invention, and FIG. 2 is a schematic configuration diagram showing a hot water circulation path of the air conditioner.

In the following description, elements common to those of the conventional air conditioner 1 'shown in FIG. In addition, the following embodiments are merely specific examples of the present invention, and do not limit the technical scope of the present invention.

In the air conditioner 1 according to the present embodiment, as shown in FIGS. 1 and 2, an outdoor controller 20 (heating control means) for driving and controlling the combustion unit 4 (heating medium heating means) is provided on the outdoor unit 6 side. The motor 16 of the blowing unit 5 (blowing means) is provided on the indoor unit 7 side.
An indoor controller 19 (blowing control means) for controlling the number of rotations of the air conditioner is provided. The indoor controller 19 has a function of calculating a required combustion amount (necessary heating amount) of gas burned by the burner 9 according to a temperature difference between a room temperature and a preset temperature. The required combustion amount is proportional to the heat content of hot water (heat medium fluid) required according to the difference between the room temperature and the set temperature. Reference numeral 27 denotes a triac that adjusts the number of rotations of the motor 16 in multiple stages based on a pulse signal from the indoor controller 19.

When the air conditioner 1 is operated, an operation switch
When the switch 23 is turned on, the indoor controller 19 compares the room temperature detected by the room temperature sensor 18 with the set temperature of the room temperature set by the temperature setting switch 22 and calculates the room temperature in the combustion section 4 according to the difference between the temperatures. The required combustion amount of the gas is calculated, and an instruction signal based on the required combustion amount is output to the outdoor controller 20 of the outdoor unit 6. And the outdoor controller
When the instruction signal is input, the drive unit 20 controls the driving of the combustion unit 4 based on the instruction signal. That is, the outdoor controller 20 controls the gas flow rate by the proportional control valve 10 and the rotation speed of the motor 12 according to the required combustion amount. Thereby, the required heat amount is given to the hot water in the heat exchanger 8. At this time, the combustion amount data based on the gas flow rate and the rotation speed of the motor 12 is transferred from the outdoor controller 20 to the indoor controller 19. Then, based on the combustion amount data, the indoor controller 19, for example, rotates the motor 16 at a low speed when the combustion amount data has a low value, and rotates the motor 16 when the combustion amount data has a high value. Multi-stage adjustment via the triac 27 at high speed.

As described above, in the air conditioner 1, the heating state of the hot water by the combustion unit 4 is controlled according to the difference between the room temperature and the set temperature, and the blowing amount by the blowing unit 5 is controlled according to the heating state at that time. Therefore, the temperature of the hot air blown from the indoor unit 7 is substantially constant, does not decrease, and at the same time, the heating capacity is enhanced. As described above, the air conditioner 1 according to the present embodiment can improve the heating capacity as compared with the conventional air conditioner 1 '. In addition, the conventional air conditioner 1 '
It is not necessary to provide the hot water sensor 24 on the side of the indoor unit 7 'provided in the above, which leads to a reduction in component costs.

Further, the apparatus of this embodiment has an upper limit temperature for the hot water temperature at the outlet side of the heat exchanger 8, and has a function of preventing an abnormal rise in the temperature of the hot water and a protection function of preventing an abnormal heating of the burner. Therefore, when the required combustion amount data provided from the indoor controller 19 via the outdoor controller 20 is a large value and the heating state of the combustion unit 4 required at that time exceeds the limit of the respective functions, for example, When the temperature of the hot water detected by the temperature sensor 14 exceeds the upper limit temperature, the hot water is controlled to the upper limit temperature, and the motor 16 of the indoor unit 7 is controlled according to the combustion amount data at that time.
Is controlled. When the required combustion amount exceeds the upper limit combustion amount related to the protection function, the rotation speed of the motor 16 is controlled based on the data on the upper limit combustion amount. As a result, it is possible to sufficiently take measures for safety.

Further, the apparatus of the embodiment has a function (operation stop means) for quickly reaching a predetermined operation condition at the start of operation. That is, even when the operation start instruction is given from the indoor controller 19 to the outdoor controller 20, the indoor unit 7 has all the hot water heating conditions of the outdoor unit 6, for example, the hot water temperature on the exit side of the heat exchanger 8, the predetermined standby time, and the like. And the blower fan 17 is driven when all the above conditions are met. Thereby, the arrival at the predetermined hot water heating condition is not unnecessarily delayed. Therefore, it is possible to quickly supply warm air at a predetermined temperature to the room.

In this embodiment, warm water (antifreeze) is used as the heat medium fluid, but may be replaced with heat medium oil or the like. Although the burner 9 for gas combustion is used as the heating element of the heating medium heating means, an oil burner, an electric heater, a steam heater, or the like may be used instead.

[Effect of the invention]

Conventionally, the temperature of the heat medium fluid is low at the start of operation in the early morning, etc., and if the blower is operated and blown as it is, cold air may be blown out and it may feel cold, but the present invention contains the heat medium fluid. A heat medium heating means for heating the heat medium fluid in the pipe is provided near one end of the circuit, and the heated heat medium is provided near the other end of the circuit. An air conditioner for arranging blowing means for heating the room air from the fluid and supplying the heated room air to the room as warm air is provided with a room temperature sensor and a room temperature detected by the room temperature sensor. Heating control means for outputting to the heating medium heating means a signal based on a required heating amount calculated according to a difference between preset temperature settings to drive and control the heating medium heating means; and Based on the signal output from the means to the heating medium heating means. A blower control means for controlling the blower means in accordance with the calorific value data for heating the obtained heat transfer fluid, and a temperature of the heat transfer fluid being brought to a predetermined temperature by the heat transfer means when the air conditioner is started. And an operation stopping means for stopping the operation of the blower means, so that the temperature of the heat medium fluid is low when the temperature of the heat medium fluid is low as described above. The heating of the fluid increases the temperature of the heat medium fluid, but the operation of the air blowing means is stopped until the temperature of the heat medium fluid reaches a predetermined temperature, so that it does not bother with the feeling of cool air. Since the heat medium fluid is circulated while being heated without blowing, the heat medium fluid is rapidly heated without cooling the heat medium fluid by the blower, so that the temperature reaches the set temperature earlier.

[Brief description of the drawings]

FIG. 1 is a schematic circuit diagram showing a circuit configuration of an air conditioner according to one embodiment of the present invention, FIG. 2 is a schematic configuration diagram of a hot water circulation path of the air conditioner, and FIG. 3 is a background of the present invention. FIG. 2 is a schematic circuit diagram illustrating a circuit configuration of a conventional air conditioner as an example of the present invention. [Explanation of reference numerals] 1,1 '... air conditioner 2,3 ... water pipe 4 ... combustion unit 5 ... blowing unit 6,6' ... outdoor unit 7,7 '... indoor unit 8 ... Heat exchanger 9 Burner 10 Proportional control valve 12 Motor 13 Blower fan 15 Heat exchanger 16 Motor 17 Blower fan 18 Room temperature sensor 19, 19 ' …… Indoor controller 20,20 ′ …… Outdoor controller 27 …… Triac

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Patent Publication No. 64-618 (JP, B2) Japanese Utility Model No. 58-35934 (JP, Y2)

Claims (1)

(57) [Scope of request for utility model registration] 1. A circulation path is formed by a conduit containing a heat medium fluid, and heat medium heating means for heating the heat medium fluid in the conduit is disposed near one end of the circulation path. An air conditioner is provided near the other end of the air conditioner for heating the room air from the heated heat medium fluid, and supplies the heated room air to the room as warm air. Driving the heating medium heating unit by outputting a signal based on a required heating amount calculated according to a difference between the room temperature detected by the room temperature sensor and a preset temperature to the heating medium heating unit. Heating control means for controlling, blowing control means for controlling the blowing means according to the calorific value data for heating the heating medium fluid obtained based on the signal output to the heating medium heating means from the heating control means, When the air conditioner is started, heat is generated by the heating medium heating means. An air conditioner characterized in that the temperature of the fluid is formed by and a shutdown device for stopping the operation of said blowing means until the predetermined temperature.