JP3326006B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-unit in which a plurality of control valves, one set for the liquid side and one for the gas side, are provided in the outdoor unit in order to use one outdoor unit for a plurality of indoor units. More particularly, the present invention relates to an air conditioner whose arrangement method is improved so that applications of the plurality of control valves can be easily identified.

[0002]

2. Description of the Related Art Conventionally, this type of multi-type air conditioner has
A plurality of indoor units are connected to one outdoor unit in parallel by refrigerant pipes, and one outdoor unit is shared by a plurality of indoor units. The outdoor unit has a liquid side and a gas side. A plurality of sets of electric control valves and two-way valves are provided corresponding to the number of indoor units.

[0003]

However, in such a conventional air conditioner, the plurality of electric control valves are arranged, for example, simply in a row or randomly, so that each of these electric control valves is arranged randomly. It is difficult to identify whether the control valve is on the liquid side or on the gas side, or for room A or room B. For this reason, there is a problem that the control valve may be attached to a wrong position and it is difficult to confirm the operation.

[0004] When these control valves are arranged in a horizontal row, the mounting space may be too large, and conversely, the interval between adjacent control valves may be too small to cause vibration during transportation. For example, there is a problem that the adjacent control valves are likely to hit each other to cause a failure, so that it is necessary to fill a buffer between the control valves.

Therefore, the present invention has been made in view of such circumstances, and an object of the present invention is to improve the method of arranging a plurality of control valves so that the distance between the control valves can be sufficiently ensured. It is an object of the present invention to provide an air conditioner which can save the mounting space of the air conditioner and can easily and surely identify the control valves individually.

[0006]

According to the first aspect of the present invention, a plurality of sets of control valves, one set for the liquid side and one for the gas side, are provided in the outdoor unit, and these control valves are connected to the outdoor unit. An air conditioner connected via a refrigerant pipe to each of a liquid-side and a gas-side packed valve provided outside the machine, wherein the plurality of control valves are arranged side by side and adjacent to each other in the transverse direction. The matching control valves are arranged so as to form a step in the axial direction, and are arranged side by side for each set of the liquid side and the gas side, and the liquid side and the gas side are arranged in the upper and lower stages of the step arrangement, respectively. The control valves are separately arranged, and these control valves are electrically operated valves that are controlled to a valve opening proportional to an input signal.

[0007]

A plurality of sets of control valves forming one set on the liquid side and the gas side are juxtaposed in the horizontal direction, and the control valves adjacent in the horizontal direction are arranged stepwise in the axial direction. The space for mounting these control valves can be saved while ensuring a sufficient distance between the control valves.

Therefore, it is possible to prevent contact between adjacent control valves during transportation, and it is not necessary to fill a gap between the control valves with a cushioning material.

A plurality of sets of control valves, one set on the liquid side and the gas side, are arranged side by side for each set. Since one is arranged and the other is arranged at the lower stage, by simply visually observing the arrangement, it is determined whether or not each control valve is for the A room or the B room, as well as the gas side or the liquid side. Can be easily and accurately identified.

Further, since the mounting positions of these control valves are determined in advance, it is possible to prevent the mounting errors of these valves beforehand, and to perform the operation confirmation test of each control valve accurately and reliably. Can be performed.

Since each control valve is a motor-operated valve, the outside of the control valve is brought into direct contact with the hand and the vibration at the time of driving is sensed by hand to confirm whether or not the control valve is driven. be able to. Therefore, an input signal is sequentially given to each control valve from one end of the lateral arrangement to the other end. At that time, the operation of each control valve is sensed by hand, thereby confirming the operation and erroneous mounting. Can be detected.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 3 is a refrigeration cycle diagram of one embodiment in which the present invention is applied to a heat pump type multi-type air conditioner.
Packed valves 12AG, 12BG, 12AL, 12BL are connected to the indoor units 3A, 3B for the plurality of chambers A, B by refrigerant piping.
, One outdoor unit 2 can be shared by a plurality of indoor units 3A and 3B.

The refrigeration cycle of the air conditioner 1 includes a compressor 4, a four-way valve 5, and gas-side flow control valves 6A, 6B, which are gas-side electronic control valves for the A or B chambers. The indoor heat exchangers 7A and 7B, the capillary tubes 8A and 8B for the A and B chambers, the expansion valves 9A and 9B which are liquid side electric control valves for the A and B chambers, the outdoor heat exchanger 10 and the like are connected to the refrigerant pipe 1.
1 to form a closed loop for reversibly circulating the refrigerant. In FIG. 3, reference numeral 12 denotes a two-way valve for defrosting.

In this refrigeration cycle, the cooling operation is performed by circulating the refrigerant in the direction indicated by the solid line arrow by switching operation of the four-way valve 5, and the heating operation is performed by circulating the refrigerant in the direction indicated by the broken line arrow in the diagram.

During the cooling operation, each indoor heat exchanger 7A,
7B is supplied to the expansion valve 9
A, 9B, while controlling each indoor heat exchanger 7A, 7B.
B, the flow rate of the gas refrigerant flowing out from the gas-side flow control valve 6
A and 6B respectively control. The expansion valves 9A and 9B and the gas-side flow control valves 6A and 6B constitute one set for each of the chambers A and B.

The flow control valve 9A is, as shown in FIG.
It has a can portion 13 that houses a magnet rotor to which a valve body (not shown) is connected, and a coil portion 14 that is inserted around the outer periphery of the can portion 13.

When a control pulse signal is input to the coil section 14, the magnet rotor in the can section 13 rotates every time the signal is input, and the valve body controls the valve opening in a stepwise manner. Since the other flow control valve 9B and expansion valves 6A and 6B also include the can portion 13 and the coil portion 14 like the flow control valve 9A, detailed description will be omitted.

The indoor heat exchangers 7A and 7A for the A and B rooms
B is housed in the indoor units 3A and 3B for the rooms A and B, respectively, and the gas side flow control valves 6A and 6B for the rooms A and B and A and B
The room expansion valves 9A and 9B are built in the outdoor unit 2 together with the compressor 4, the four-way valve 5, the outdoor heat exchanger 10, and the like.

FIG. 1 shows these gas side flow control valves 6A, 6A.
FIG. 2 shows an example of the arrangement of B and the expansion valves 9A and 9B in the outdoor unit 2, and as shown in FIG. 2, from the left end to the right end in the figure, for example, the expansion valve 9A for the A chamber and the gas side for the A chamber. The flow control valve 6A, the expansion valve 9B for the chamber B, and the gas-side flow control valve 6B for the chamber B are sequentially arranged in the horizontal direction for each of the chambers A and B, and the can portions 13 of those adjacent in the horizontal direction are arranged. And the coil portion 14 are arranged so as to be stepped in the vertical direction, and the gas-side flow control valves 6A, 6B for the A and B chambers
On the other hand, expansion valves 9A and 9B for the liquid-side A and B chambers are arranged at the lower stage.

Therefore, according to the present embodiment, it is possible to secure a sufficient interval between the gas-side flow control valves 6A and 6B and the expansion valves 9A and 9B, and to visually check the arrangement of each of these. Valves 6A, 6B, 9A,
Whether 9B is for room A or room B, or whether it is gas side or liquid side can be easily and accurately identified.

That is, the control valves 6A, 6B,
Since the arrangement of 9A and 9B is determined in advance, the can 13
When the coil portion 14 is mounted on the vehicle, it is possible to prevent the mounting position from being mistaken (erroneous mounting), and since the mounting position is vertically different between adjacent units, the mounting operation is easy. Becomes

In addition, each of these control valves 6A, 6B, 9
Since A and 9B can be identified accurately, these various tests can be executed accurately and reliably.

The control valves 6A, 6B, 9
A and 9B are motor-operated valves for controlling the valve opening in a stepwise manner each time a control pulse signal is input. Therefore, these control valves 6A, 6B, 9A and 9B are returned to the fully closed point (zero point) in advance. It is necessary to perform a fully closed reset test.

On the other hand, each of these control valves 6A, 6B, 9
Since A and 9B are motor-operated valves, it is possible to confirm whether or not the control valve is being driven by directly touching the outside of the hand and detecting vibration during driving by hand.

Therefore, when performing the fully-closed reset test for each of the control valves 6A, 6B, 9A, 9B, the control valves 6A, 6B, 9A, 9B are sequentially arranged from one end to the other end of the arrangement. By giving pulses and checking the vibration during the operation by hand, each of these control valves 6A, 6
It is possible to confirm the operation of B, 9A, 9B and to detect misplacement (misinstallation).

[0027]

As described above, according to the present invention, a plurality of sets of control valves, one set for the liquid side and the gas side, are juxtaposed in the horizontal direction, and the control valves adjacent in the horizontal direction are arranged in the axial direction. Therefore, the space between these control valves can be sufficiently secured, and the space for mounting these control valves can be saved.

Therefore, it is possible to prevent contact between adjacent control valves during transportation, and it is not necessary to fill a gap between the control valves with a cushioning material.

A plurality of sets of control valves, one set on the liquid side and the gas side, are arranged side by side for each set. Since one is arranged and the other is arranged at the lower stage, it is possible to determine whether each of the control valves is used for a set of the control valves, for example, for the chamber A or the chamber B by simply visually observing the arrangement, or for the gas side or liquid. The side can be easily and accurately identified.

Further, since the mounting positions of these control valves are determined in advance, it is possible to prevent the mounting error of the coil portion to each of these valves beforehand, and to perform an operation check test of each control valve. Can be performed accurately and reliably.

Since each control valve is a motor-operated valve, the outside of the control valve is brought into direct contact with the hand and the vibration at the time of driving is sensed by hand to determine whether or not the control valve is driven. You can check. Therefore, an input signal is sequentially given to each control valve from one end of the lateral arrangement to the other end. At that time, the operation of each control valve is sensed by hand, thereby confirming the operation and erroneous mounting. Can be detected.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of an embodiment of an air conditioner according to the present invention.

FIG. 2 is a layout view of main parts shown in FIG.

FIG. 3 is a refrigeration cycle diagram of the embodiment shown in FIG.

[Explanation of symbols]

 Reference Signs List 1 air conditioner 2 outdoor unit 3A, 3B indoor unit 4 compressor 5 four-way valve 6A, 6B gas side flow control valve 7A, 7B indoor heat exchanger 9A, 9B expansion valve (liquid side control valve) 10 outdoor heat exchanger 11 refrigerant Piping 12AG Room A gas side packed valve 12BG Room B gas side packed valve 12AL Room A liquid side packed valve 12BL Room B liquid side packed valve 13 Can part 14 Coil part

Claims (1)

(57) [Claims] A plurality of sets of control valves, one set for the liquid side and one for the gas side, are provided in the outdoor unit, and these control valves are provided on the liquid side and the gas side packed valve provided outside the outdoor unit. An air conditioner connected via a refrigerant pipe, wherein the plurality of control valves are arranged side by side, and the control valves adjacent in the lateral direction are arranged so as to form a step in the axial direction. At the same time, the liquid side and the gas side are juxtaposed in the horizontal direction for each set of the liquid side and the gas side, and the liquid side and the gas side are arranged separately in the upper and lower stages of the uneven arrangement. An air conditioner characterized by being an electric valve controlled to a proportional valve opening.