JPH0345837A - Air conditioner - Google Patents

Abstract

PURPOSE:To improve an operating efficiency without damaging an outer appearance by a method wherein a duct of which one end is opened into an indoor side and the other end is opened into an outdoor side is arranged at a partition wall, a ventilation air blower is arranged in the duct and a refrigerant pipe within the duct is provided with a heating exchanging fin. CONSTITUTION:A duct 18 of which one end is opened into an indoor A and the other end is opened toward an outdoor device 16 at an outdoor area B is passed through a partition wall 11. This duct is provided with a ventilation air blower 21 for performing a ventilation between the indoor air and the outdoor air. Refrigerant pipes 22a and 22b connecting an indoor device 13 and an outdoor device 16 are arranged within the duct 18. Refrigerant is supplied from a compressor for the outdoor device 16 to an indoor heat exchanger 12 through refrigerant pipes, either a cooling or a heating is carried out by the indoor heat exchanger so as to perform an indoor air conditioning. In the case that an indoor air ventilation is required, the ventilation air blower 21 within the duct is rotated to perform the ventilation of the indoor air and the outdoor air. In the case of performing a heating operation, the outdoor air may absorb heat from a hot refrigerant in a freezing cycle through a fin 23 and in turn in the case of performing a cooling operation, the outdoor air may perform a termal radiation to the low temperature refrigerant in a freezing cycle through the fin 23 so as to recover a heat loss caused by the ventilation air.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a split-type air conditioner, and more particularly to a split-type air conditioner that ventilates indoor air.

(Prior Art and Problems to be Solved by the Invention) In general, a split type air conditioner has an indoor unit having an indoor heat exchanger, etc. installed on the indoor side of a partition wall, and a compressor, etc. installed on an outdoor base. An outdoor unit having an outdoor heat exchanger, etc. is installed, and the indoor unit and outdoor unit are connected by refrigerant piping that penetrates the partition wall, and the refrigerant compressed by the compressor is sent to the indoor unit via the refrigerant piping. This indoor unit cools or heats the room.

In such a split-type air conditioner, a thin through duct is provided in the partition wall so that the indoor air cooled or heated by the indoor unit does not leak outside, and the indoor unit and the outdoor unit are connected inside this through duct. A refrigerant pipe is provided to connect the two.

However, if unclean air such as cigarette smoke or odor is present in a room equipped with such an air conditioner, it is necessary to ventilate the unclean air.

In order to ventilate such unclean air, in this type of sub-type air conditioner, a ventilation fan is installed independently of the indoor unit, close to the bulkhead where the indoor unit is installed, and is connected to the outdoor air. Ventilation with indoor air is provided.

Therefore, two ducts, one for the refrigerant piping of the air conditioner and the other for ventilation, are provided in the partition wall, which not only impairs the aesthetic appearance but also impairs workability.

In addition, since the ventilation operation of this ventilation blower is performed independently of the cooling and heating operation of the air conditioner, indoor air that has been cooled and heated is released into the outside air during ventilation operation, and the air conditioner is not operated. There are problems that significantly reduce efficiency.

For the above reasons, the present invention provides an air conditioner in which a ventilation blower is provided in the through duct in which the refrigerant piping is arranged, and a large number of through ducts are not provided in the partition wall.

[Structure of the invention]

(Means for Solving the Problems) The present invention connects an indoor unit having an indoor heat exchanger, an indoor blower, etc. and an outdoor unit having a compressor, an outdoor heat exchanger, an outdoor blower, etc. by refrigerant piping passing through a partition wall. In the split-type air conditioner in which the partition wall is connected, a duct is provided through the partition wall, one end of which opens indoors and the other end of which opens toward the outdoor unit, and this duct connects indoor air and outdoor air. A ventilation blower for ventilation with air is provided, and a refrigerant pipe connecting the indoor unit and the outdoor unit ε is disposed within the duct.

(Function) Refrigerant is supplied from the compressor of the outdoor unit to the indoor heat exchanger of the indoor unit via the refrigerant piping, and the indoor heat exchanger cools or heats the room and air-conditions the room.

When indoor ventilation is required in a room where this air conditioning is performed, a ventilation blower in the duct is rotated to ventilate indoor air and outdoor air. In this ventilation, exhaust air is blown to the outdoor heat exchanger of the outdoor unit, thereby preventing a decrease in the heating and cooling efficiency of the air conditioner.

(Embodiment) An embodiment of the air conditioner of the present invention shown in the drawings will be described below.

FIG. 1 is a schematic cross-sectional view of a split-type air conditioner 10. This air conditioner 10 includes a blower, a temperature controller (none of which is shown), and an indoor heat exchanger 12 on an indoor wall surface 11a at the top of a partition wall 11 that partitions an indoor room A and an outdoor room B.
An indoor unit 13 having a compressor, a blower (none of which is shown), an outdoor heat exchanger 15, etc. is mounted on a base 14 provided outdoors.

The partition wall 11 is provided with a hole 17 that penetrates the indoor room A and the outdoor B, and one side of the hole 17 is opened to the indoor room A, and the other side is opened to a heat generating part such as the outdoor heat exchanger 15 of the outdoor unit 16. An inverted-shaped duct 18 that opens toward the front is attached. A ventilation blower 21 having blower blades 20 rotated by an electric motor 8119 that rotates forward and backward is attached to the joint portion 18a of the inverted duct 18. In addition, a liquid side refrigerant pipe 22a and a gas side refrigerant pipe 22b, which have one end connected to the outdoor unit 16 and the other end connected to the indoor heat exchanger 12 of the indoor unit 13, are inserted into the inverted-shaped duct 18. ing. The liquid side refrigerant pipe 22a and the gas side refrigerant pipe 22b are wrapped with a heat insulating material around their outer peripheries, but the refrigerant pipe 22b connecting the switching valve of the outdoor unit 16 and the indoor heat exchanger 12 is In the duct 18, heat exchange fins 23 are provided so that ventilation air exchanges heat with the refrigerant. Note that the chain line 24a,
Reference numeral 24b indicates control wiring connected to electrical components, control components, or detectors (none of which are shown) of the indoor unit 13, outdoor unit 16, ventilation fan 21, etc., and is used for temperature control, humidity control, etc. , sends electrical signals when controlling ventilation, etc.
It is used to flow control current.

To operate the air conditioner configured as described above, when the operation switch (not shown) is turned on, the blower of the indoor unit 13,
The compressor of the outdoor unit 16 is operated, and the refrigerant is supplied to the refrigerant pipe 22.
a, the refrigerant circulates between the indoor heat exchanger 12 and the outdoor heat exchanger 15 via the refrigerant piping 22b, and cools the indoor heat exchanger 12 of the indoor unit 13.
A cooling or heating action is performed by the outdoor unit 16, and a heat radiation action by the outdoor heat exchanger 15 of the outdoor unit 16, the compressor, etc. is performed.

When it becomes necessary to ventilate a room where such air conditioning is being operated, a detector or switch (not shown) of the indoor unit 13 is activated.
By the operation or operation, the ventilation fan 21 is rotated, for example, in the forward direction via the control wiring 24a, and outdoor air is sucked into the room to perform ventilation.

In this ventilation, outdoor air flows into the fins 23 during heating operation.
heat is absorbed from the high-temperature refrigerant of the refrigeration cycle through the fins 23, and during cooling operation, outdoor air radiates heat to the low-temperature refrigerant of the refrigeration cycle through the fins 23, recovering heat loss due to ventilation air,
Increase indoor air conditioning efficiency.

Note that the ventilation blower 21 may be rotated in the opposite direction to perform a ventilation operation such as exhausting indoor air to the outside to ventilate the indoor air.

In this way, in the air conditioner of the present invention, the ventilation duct and the refrigerant piping duct are combined into one, and the ventilation blower and the refrigerant piping are arranged in this duct, so that the number of ducts opening in the partition wall is one. Since only a few steps are required, there is less construction work and the aesthetics of the interior is not compromised.

Furthermore, since the ventilation fan can be operated in response to the cooling or heating operation of the indoor unit, it can be operated without reducing the thermal efficiency of the conditioned indoor air.

FIG. 2 shows another embodiment in which the duct portion of FIG. 1 is improved. That is, a hole 17 is formed in the partition wall 11, and a first duct 32 has one end 30 opened into the room and the other end 31 opened into the atmosphere, and a first duct 32 with one end 33 opened into the room. A second duct 35 whose other end 34 is open to the atmosphere is inserted therethrough.

The first duct 32 is provided with a refrigerant pipe 22a122b connected to the indoor heat exchanger 12 of the indoor unit 13, the compressor of the outdoor unit 16, the outdoor heat exchanger 15, etc., and the other end 31 is provided with a ventilation fan 36 that introduces outside air into the room.

Further, the other end 34 of the second duct 35 is provided with a ventilation fan 37 for exhausting the indoor air to the outside, and guides the exhaust air to the outdoor unit 16 through the heat exchanger 1 of the outdoor unit 16.
A guide duct 38 for blowing air is attached to 5.

With the air conditioner configured in this way, when ventilation is required, the ventilation fan 36 is rotated by manual operation of the detector or switch, and the outside air enters the room from the inlet of the duct 32 through the opening. Inhaled. In connection with this, the ventilation fan 37 is rotated and the indoor air is opened and the duct 35
The air is exhausted toward the heat exchanger 15 of the outdoor unit 16 through the guide duct 38, and the heat exchanger 15 is cooled or heated.

In the above-mentioned ventilation, the refrigerant pipes 22a and 22b are arranged in the - duct 32, so the intake air is heat exchanged by the fins 23 as in the embodiment shown in Fig. 1, and the ventilation air is warmed or cooled to exchange heat with the conditioned air. No reduction in efficiency.

Further, since ventilation is performed through two ducts, the intake duct 32 and the exhaust duct 35, indoor air can be easily ventilated.

Furthermore, the exhaust duct 35 is provided with a guide duct 38 to send the conditioned indoor air to the outdoor heat exchanger of the outdoor unit. During cooling operation, the low-temperature indoor air cools the outdoor heat exchanger, etc., increasing the heat exchange efficiency of the air conditioner.

In addition, since there is only one duct, the appearance is improved, construction work is simplified, and ventilation can be performed in harmony with the ventilation blower and air conditioner.

In the above embodiment, a blower such as a propeller fan is used as the ventilation blower, but an air compressor may be used instead.

〔Effect of the invention〕

In the present invention, as described above, the refrigerant piping and the ventilation duct provided on the partition wall of the split type air conditioner are integrated into one, so that the aesthetic appearance of the room is not spoiled.

Furthermore, since the ventilation blower and the air conditioner are placed close to each other, ventilation and air conditioning can be performed in coordination without reducing air efficiency.

Furthermore, since there is only one duct, it is possible to easily install the air conditioner and the ventilation blower.

In addition, since the outdoor unit is cooled or heated by the exhaust air for ventilation, the conditioned air can be used effectively and the heat exchange efficiency can be increased.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the main parts of the air conditioner of the present invention;
FIG. 2 is a sectional view showing the main parts of another air conditioner. 10... Air conditioner, 11... Partition wall, 12...
Indoor heat exchanger, 13... Indoor unit, 14... Base, 1
5...Outdoor heat exchanger, 16...Outdoor unit, 17...
Hole, 18...Duct, 21...Ventilation blower, 22
a, 22b... Refrigerant pipe, 23... Fin, 24a
, 24b... control line, 32... first duct, 35
...Second duct, 36.37...Ventilation blower,
38...Guidance duct.

Claims (1)

[Claims] 1. An indoor unit having an indoor heat exchanger, an indoor blower, etc. and an outdoor unit having a compressor, an outdoor heat exchanger, an outdoor blower, etc. are connected by refrigerant piping passing through a partition wall. In the split type air conditioner, the partition wall is provided with a duct having one end opened to the indoor side and the other end opened to the outdoor side, and a ventilation blower for ventilation between indoor air and outdoor air is provided in this duct, and . An air conditioner, characterized in that a refrigerant pipe disposed within the duct is provided with heat exchange fins. 2. Split-type air conditioning in which an indoor unit that has an indoor heat exchanger, indoor blower, etc. and an outdoor unit that has a compressor, outdoor heat exchanger, outdoor blower, etc. are connected by refrigerant piping that passes through a partition wall. In the device, the partition wall is provided with a duct having one end opened toward the indoor side and the other end opened toward the outdoor unit outdoors, and this duct is provided with a ventilation blower for ventilating indoor air and outdoor air, An air conditioner characterized in that a heat exchange fin is provided on a gas side refrigerant pipe arranged in the duct.