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Air conditioning device

A technology of air conditioning device and detection device, which is applied in the directions of space heating and ventilation, heating mode, lighting and heating equipment, etc., can solve the problem of air intake pressure drop, insufficient indoor heating capacity, and increased frequency of starting/stopping of air conditioners, etc. problem, to achieve the effect of delayed frosting

Inactive Publication Date: 2006-06-21
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the case where the outside air temperature is low and the intake pressure often drops due to frost on the outdoor heat exchanger, although the heating capacity is particularly required at this time, the above-mentioned conventional operation control method is often used. The frequency of air conditioner start / stop increases and the heating capacity of the room is insufficient.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0025] FIG. 1 shows a schematic diagram of the freezing loop in Example 1.

[0026] The refrigerating cycle shown in Fig. 1 includes an outdoor unit and an indoor unit, and the outdoor unit includes: a power variable compressor 1; an outdoor side heat exchanger 2; an outdoor blower 3; Expansion valve 4, four-way valve 5 for switching cooling operation and heating operation; outdoor heat exchanger temperature detection device 6; intake pressure detection device 7; outside air temperature detection device 8; and outdoor unit control device 9. The indoor unit includes: an indoor side heat exchanger 10 ; an indoor blower 11 ; an electric expansion valve 12 for reducing pressure; an indoor unit suction air temperature detection device 13 ; and an indoor unit control device 14 .

[0027] FIG. 2 is an intake pressure set value table for explaining the operation control method of the present invention, in which a prescribed intake pressure set value is assigned for each outside air te...

Embodiment 2

[0033] 4 is a frequency reduction coefficient table for explaining the operation control method of the present invention, in which a predetermined frequency reduction coefficient is assigned in advance for each temperature difference between a remote controller set temperature and indoor suction air temperature.

[0034] FIG. 5 is an operation flowchart for explaining the operation control method of the present invention.

[0035] As in Embodiment 1, when the heating operation is performed, the intake pressure Ps is first detected by the intake pressure detection device 7 , and the outside air temperature To is detected by the outside air temperature detection device 8 .

[0036] Then, the intake air temperature Ti is detected by the indoor intake air temperature detection device, and then the temperature difference ΔD between the remote control setting temperature and Ti is calculated, and the frequency reduction coefficient Kf is obtained from Figure 4 .

[0037] If the inta...

Embodiment 3

[0040] 6 is an outdoor unit heat exchanger temperature setting value table for explaining another operation control method of the present invention, in which a prescribed outdoor unit heat exchanger temperature setting value is assigned for each outside air temperature.

[0041] FIG. 7 is an operation flowchart for explaining the operation control method in the present invention.

[0042] During the heating operation, first, the outdoor heat exchanger temperature Te is detected by the outdoor heat exchanger temperature detection device 6 , and the outside air temperature To is detected by the outside air temperature detection device 8 .

[0043] Next, refer to FIG. 7 to obtain the corresponding outdoor unit heat exchanger temperature setting values ​​Te_1~Te_6 from the outside air temperature, and then compare them with the actual outdoor unit heat exchanger temperature Te.

[0044] If the temperature Te of the heat exchanger of the outdoor unit is lower than the temperature s...

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Abstract

The present invention provides an air conditioner, which can solve the problem that the air conditioner has a special need for heating capacity when the outside air temperature is low and the intake pressure often drops due to frosting on the outdoor heat exchanger. The frequency of start / stop increases and the heating capacity of the room is insufficient. When performing heating operation, when the intake pressure detected by the intake pressure detection device (7) is lower than the specified set value set for each outside air temperature, by making the operation of the compressor (1) The decrease in frequency can not only suppress the decrease of the intake pressure, delay the frosting on the outdoor side heat exchanger (2), but also perform the operation corresponding to the required indoor heating capacity.

Description

technical field [0001] The invention relates to an air conditioner. Background technique [0002] When the heating operation is performed under the condition of low outside air temperature, frost will form on the outdoor heat exchanger, and the amount of refrigerant on the intake side of the compressor will be insufficient, causing the intake pressure to drop. Under such circumstances, the operation control method adopted in the existing air conditioner is generally as shown in the flow chart in Fig. For an example, refer to Japanese Patent Laid-Open Publication No. Hei 8-254362). [0003] However, in the case where the outside air temperature is low and the intake pressure often drops due to frost on the outdoor heat exchanger, although the heating capacity is particularly required at this time, the above-mentioned conventional operation control method is often used. The frequency of start / stop of the air conditioner increases and the heating capacity for the room is insu...

Claims

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Application Information

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IPC IPC(8): F24F11/00F25B1/00
Inventor 丸冈俊也
Owner PANASONIC CORP
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