JPH06201226A - Air-conditioner - Google Patents

Abstract

PURPOSE:To reduce the number of refrigerant pipes and brazing locations by a method wherein there are provided one control device for a freezing cycle having as its major devices a compressor, an outdoor heat exchanger, an indoor heat exchanger and an accumulator and the other control device for a freezing cycle comprising a four-way valve and a two-way valve. CONSTITUTION:There are provided one control device for a freezing cycle comprising a compressor 1, an outdoor heat exchanger 2, an indoor heat exchanger 3 and an accumulator as its major devices and the other control device for a freezing cycle comprising a four-way valve 11 and a two-way valve 12. A lid 14 of the accumulator 13 is formed at its outer shape under forging operation. Within the accumulator is formed under a machining operation a connection port 19 between a four-way valve 11 and a two-way valve 12 acting as control devices of freezing cycle and the refrigerant passage around these control devices and other devices. With such an arrangement as mentioned above, the refrigerant piping structure within an outdoor device can be simplified and a brazing location can be substantially reduced, resulting in that it has an effect that its assemblying can be easily carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner equipped with a refrigeration cycle control device and an accumulator.

[0002]

2. Description of the Related Art FIG. 9 is a block diagram showing a refrigeration cycle of a general air conditioner. As shown in FIG. 9, the air conditioner includes a compressor 1, an outdoor heat exchanger 2, an indoor heat exchanger 3, and an accumulator 4, which are main components of a refrigeration cycle.
And a four-way valve 5, a two-way valve 6, check valves 7 ₁ , 7 ₂ and a capillary tube 8 ₁ , 8 ₂ which are control devices of the refrigeration cycle.
Etc. are connected by a refrigerant pipe 9. These devices are arranged separately in the outdoor unit A and the indoor unit B as shown in FIG. 9, a refrigerant pipe 9 ₂ refrigerant piping 9 ₁ and the indoor unit B of the outdoor unit A, connector 10
Connected through.

In the general air conditioner described above, the four-way valve 5 is switched while the two-way valve 6 used only when frost is formed on the outdoor heat exchanger 2 is closed to cool the room. The heating can be switched. The solid arrow indicates the flow of the refrigerant during heating, and the dashed arrow indicates the flow of the refrigerant during cooling.

By the way, as a structure in which such a general air conditioner is embodied, there is a conventional structure such as, for example, the Japanese Utility Model Publication 60-79
The one described in Japanese Patent No. 671 is used.
In this conventional air conditioner, as shown in FIG. 10, the outdoor unit A includes a compressor 1, an outdoor heat exchanger 2, an accumulator 4, a four-way valve 5, a two-way valve 6, a check valve 7 ₁ and a capillary. The tube 8 ₁ and further a large number of refrigerant pipes 9 ₁ connecting these devices were bent and arranged in various directions as shown in FIG.

[0005]

The conventional air conditioner is
It is configured as described above, since between the respective devices in the outdoor unit A has been connected by the refrigerant pipe 9 ₁ has a problem that the type and amount of refrigerant pipe 9 ₁ required much cost is high . In addition, the number of brazing points of the refrigerant pipe 9 ₁ is extremely large, which causes a problem that the refrigerant easily leaks. Furthermore, a troublesome brazing operation the refrigerant pipe 9 _1, in particular, there is a problem that the brazing operation in a nearby solenoid valve is extremely difficult. In addition, since the shape of the refrigerant pipe 9 ₁ connecting between the devices is complicated, a large space is required for the refrigerant pipe 9 _{1 and} the entire outdoor unit A becomes large.

The present invention has been made in order to solve the above-mentioned problems and has a structure in which the refrigerant pipes in the outdoor unit can be omitted, and the cost can be reduced by reducing the refrigerant pipes and brazing points to be used. An object of the present invention is to obtain an air conditioner that can reduce the size, reduce the size, prevent the refrigerant leakage, and reduce the troublesome brazing work.

[0007]

An air conditioner according to claim 1 of the present invention is a refrigeration cycle having a compressor, an outdoor heat exchanger, an indoor heat exchanger and an accumulator as main components, a four-way valve, and A control device for a refrigeration cycle having a two-way valve, in which the control device is built in the lid of the accumulator, and a connection port between the control device and main equipment and a refrigerant passage around the control device are provided in the lid. It is arranged.

An air conditioner according to claim 2 of the present invention is
The four-way valve has a first opening attached to the lid and communicating with the indoor heat exchanger, a second opening attached to the lid and communicating with the outdoor heat exchanger, and an accumulator attached to the lid. An outlet communicating with the cylinder, a cylinder formed in the lid by machining the lid, a piston arranged in the cylinder, and a piston arranged in the lid and linked with the piston to make the outlet the first opening or And a sliding valve selectively connected to the second passage.

An air conditioner according to claim 3 of the present invention is
The two-way valve is a valve seat formed in the lid by machining the lid, and two refrigerant passages formed in the lid with the valve seat sandwiched therebetween, one of which is connected to the compressor and the other of which is connected to the compressor. It is provided with one connected to the outdoor heat exchanger and a plunger moving forward and backward toward the valve seat.

An air conditioner according to claim 4 of the present invention is
The outer shape of the lid is formed by forging.

An air conditioner according to claim 5 of the present invention is
Refrigerant pipes for connection that connect the connection ports to the main equipment are brazed to the lid portion in the furnace.

An air conditioner according to claim 6 of the present invention is
The outlet of the four-way valve connected to the accumulator opens directly into the accumulator.

An air conditioner according to claim 7 of the present invention is
A high-temperature refrigerant flows in the control device and in a refrigerant passage around the control device, and a heat transfer interrupting unit is provided to reduce the amount of heat leak from the high-temperature refrigerant to the low-temperature refrigerant in the accumulator.

An air conditioner according to claim 8 of the present invention is
The heat transfer blocking means is a hollow portion provided inside the lid portion.

An air conditioner according to claim 9 of the present invention is
The heat transfer blocking means is a heat insulating material arranged between the lid portion and the accumulator.

[0016]

In the air conditioner according to the first aspect of the present invention, the refrigerant pipes in the outdoor unit can be omitted, and the refrigerant pipes and brazing points to be used are reduced.

In the air conditioner according to the second aspect of the present invention, the refrigerant pipes and brazing points to be used are reduced by incorporating the four-way valve in the lid.

In the air conditioner according to the third aspect of the present invention, by incorporating the two-way valve in the lid, the refrigerant pipes and brazing points to be used are reduced.

In the air conditioner according to the fourth aspect of the present invention, since the outer shape of the lid portion is manufactured by forging, the number of machining points can be reduced.

In the air conditioner according to the fifth aspect of the present invention, a robust structure can be obtained by brazing the connecting pipe to the lid in the furnace.

In the air conditioner according to the sixth aspect of the present invention, since the outlet of the four-way valve is opened directly into the accumulator, the structure can be simplified and the number of parts can be reduced.

In the air conditioner according to claim 7 of the present invention, the amount of heat leakage from the high temperature refrigerant in the control device and the refrigerant passage to the low temperature refrigerant in the accumulator is reduced by the heat transfer cutoff means. The capacity of the air conditioner, especially the heating capacity, is significantly improved.

In the air conditioner according to the eighth aspect of the present invention, the amount of heat leak from the high temperature refrigerant in the control device and the refrigerant passage to the low temperature refrigerant in the accumulator is reduced by the hollow portion, so that the air conditioning is performed. The capacity of the machine, especially the heating capacity, is greatly improved.

In the air conditioner according to claim 9 of the present invention, the amount of heat leak from the high temperature refrigerant in the control device and the refrigerant passage to the low temperature refrigerant in the accumulator is reduced by the heat insulating material. The capacity of the machine, especially the heating capacity, is greatly improved.

[0025]

【Example】

Example 1. The first embodiment is an embodiment according to claims 1 to 6 of the present invention. First Embodiment FIG. 1 is a configuration diagram showing an air conditioner showing a first embodiment of the present invention. The four-way valve 11 and the two-way valve 12 are built in the lid portion 14 of the accumulator 13. The refrigeration cycle of this air conditioner is the same as the general one shown in FIG. 9, and the refrigerant is a solid arrow (compressor 1 → four-way valve 11 → indoor heat exchanger 3 → capillary tube) during heating operation. 8 ₂ → Check valve 7 ₁ → Outdoor heat exchanger 2 →
Along the four-way valve 11 → accumulator 13 → compressor 1), during the cooling operation, a dashed arrow (compressor 1 → four-way valve 11)
→ outdoor heat exchanger 2 → capillary tube 8 ₁ → check valve 7 ₂ → indoor heat exchanger 3 → four-way valve 11 → accumulator 13 → compressor 1). And four-way valve 11
It is possible to switch between cooling and heating by switching.

FIG. 2 shows the accumulator 13 shown in FIG.
FIG. 3 is a perspective view showing a structure in the vicinity thereof, FIG. 3 is a sectional view taken along plane III of FIG. 2, FIG. 4 is a sectional view of a main part taken along plane IV of FIG. 2, and FIG. As shown in these drawings, the outer shape of the lid portion 14 of the accumulator 13 is formed by forging, and inside the lid portion 14, the four-way valve 11 and the two-way valve 12 which are the control devices of the refrigeration cycle and the surroundings of these control devices are provided. Connection port 1 for connecting the refrigerant passages 16, 52, 53 and other devices
9 is formed by machining.

First, the four-way valve 11 and the refrigerant passages 16 and 52 around the four-way valve 11 will be described. As shown in FIGS. 3 and 4, the cylinder 3 of the four-way valve 11 is provided inside the lid portion 14.
4 is formed by machining. As shown in FIG. 4, the refrigerant passage 1 communicating with the discharge side connection port 74 of the discharge pipe 35 connected to the compressor 1 is provided on the inner peripheral surface of the cylinder 34.
The inlet 17 of 6 is opened. Further, as shown in FIG. 3, the valve seat 18 fixed inside the cylinder 34 is provided with a lead-out port 23 communicating with the suction-side connection port 72 of the suction pipe 36 connected to the accumulator 13. 24 on both sides of the conduit to the indoor heat exchanger 3
Is connected to the indoor side connection port 71, and the second communication port 29 is connected to the outdoor side connection port 73 to which the conduit 27 to the outdoor heat exchanger 2 is connected. ing. The discharge pipe 35, the suction pipe 36, and the conduits 24, 27 connected to the accumulator 13 are joined to the connection ports 74, 72, 71, 73 by furnace brazing, respectively. Here, the discharge pipe 35, the suction pipe 36, and the conduits 24 and 27 are connecting refrigerant pipes.

As shown in FIG. 3, inside the cylinder 34, two large and small pistons 31, which are connected by a connecting rod 30,
32 and the concave sliding valve body 3 mounted on the connecting rod 30
3 are arranged, and they are inserted and assembled from the end surface of the cylinder 34. Further, 21 and 22 are cylinders 34.
Is a lid that seals the end face of R1, the space sandwiched between the lid 21 and the piston 31 is R1, the space sandwiched between the lid 22 and the piston 32 is R2, and the space sandwiched between the two pistons 31 and 32 is R3. . Cylinder 34 near the lid 21 of the space R1
A communication pipe 45 (see FIG. 5) is provided on the inner peripheral surface of the communication hole 45.
(See FIG. 4) An opening 38 communicating with the accumulator 1 is formed on the inner peripheral surface of the cylinder 34 near the lid 22 of the space R2.
A communication port 39 communicating with 3 is opened.

Next, the pilot valve 37 will be described. As shown in FIG. 4, two spaces 4 are provided inside the lid 14.
1, 42 are formed by machining, and these spaces 4
A communication hole 4 that is alternately closed by a needle valve 44 that is operated by a solenoid coil 43 between the first and second positions.
5 is drilled. As described above, the communication hole 45 communicates with the communication port 38 by the conduction pipe 46. 47 is space 4
1 is a conduction path that connects the space R3 with the space R3 described above.
2 is directly opened in the accumulator 13. 58
Is a lid for sealing one end of the conducting path 47.

Next, the two-way valve 12 and the refrigerant passages 52 and 53 around the two-way valve 12 will be described. As shown in FIG. 4, a valve seat 54 is formed by machining in the lid portion 14, and a plunger 56 that freely moves back and forth toward the valve seat 54 is accommodated in the tube 55. The plunger 56 also serves as a valve element, and is constantly pressed against the valve seat 54 by the spring force of the spring 57. On the other hand, a solenoid coil 43a is provided to retract the plunger 56 from the valve seat 54 against the spring force of the spring 57. In addition, around the two-way valve 12, refrigerant passages 52 and 53 are formed by machining to sandwich the valve seat 54, the refrigerant passage 52 communicates with the above-mentioned space R3, and the refrigerant passage 53 is non-returned. Valves 7 ₁ , 7 ₂ and capillary tube 8 ₁ ,
8 ₂ (see FIG. 1) is connected to the connection port 19. 59
Is a lid for sealing one end of the refrigerant passage 52.

Next, the connection relationship between the lid portion 14 of the accumulator 13 and other equipment will be described. As shown in FIG. 1, the discharge pipe 62 of the compressor 1 is connected to the above-described discharge pipe 35 (see FIG. 4) provided in the lid portion 14. Therefore, the space R3 communicating with the discharge pipe 35 has a high pressure. Further, the suction pipe 63 of the compressor 1 is connected to the refrigerant outlet pipe 61 (see FIGS. 3 and 5) communicating with the inside of the accumulator 13, and the conduit 27 (see FIG. 3) is connected to the outdoor heat exchanger 2. Piping 6
Connect 5. Furthermore, the connection pipe 64 for connecting to the indoor heat exchanger 3 is connected to the conduit 24 (see FIG. 3), and the connection port 19
The check valves 7 ₁ and 7 ₂ and the connecting pipe 66 to the capillary tubes 8 ₁ and 8 ₂ are connected (see FIG. 4).

Now, the operation of the first embodiment will be described. First, when heating the room, the solenoid 43 of the pilot valve 37 is energized. 3 and 4 show the heating operation state, and each space R1, R2, R
The pressure state of No. 3 is as follows. That is, FIG.
As shown in FIG. 3, since the needle valve 44 in the pilot valve 37 is raised, the communication path 47, the communication hole 45,
The space R1 is formed through the conduit tube 46 (see FIG. 5) and the passage 38.
Communicates with the space R3. Therefore, as shown in FIG. 3, the space R1 and the space R3 on both sides of the large-diameter piston 31 have the same pressure. On the other hand, the space R2 communicates with the inside of the accumulator 13 through the passage 39 and is always at a low pressure, and as described above, the space R3 is at a high pressure, so that the small diameter piston 32 receives a force in the right direction in FIG. It is in the position shown in FIG. Therefore, the sliding valve body 33 connected to the piston 32 by the connecting rod 30
The outlet 23 and the second passage 29 communicate with each other, and the communication path 47 (see FIG. 4) communicates with the first passage 26 through the space R3.

Therefore, the high-temperature high-pressure refrigerant discharged from the compressor 1 as shown in FIG. 1 flows through the discharge pipe 62 and the discharge pipe 35 into the space R3 as shown in FIG. And
As shown in FIG. 3, the indoor heat exchanger 3 is passed through the first passage 26 and the conduit 24, and then through the connection pipe 64 as shown in FIG.
The heat is dissipated and the liquid is condensed to heat the interior of the room. Further, the liquefied and condensed refrigerant is decompressed by the capillary tube 8 ₂ and then passes through the check valve 7 ₁ to reach the outdoor heat exchanger 2 to endothermic action and vaporize and evaporate, and the connecting pipe 65,
It reaches the conduit 27. Then, as shown in FIG. 3, it flows into the second through hole 29, and slide valve body 33, outlet 23, and suction pipe 36.
And goes into the accumulator 13. The refrigerant gas separated into gas and liquid here enters the compressor 1 again via the refrigerant outlet pipe 61 and the suction pipe 63 as shown in FIG.

Next, the cooling operation state will be described. The solenoid 43 of the pilot valve 37 is not energized during the cooling operation. Therefore, the needle valve 44 in the pilot valve 37 is lowered, and the space R1 becomes
(See FIG. 3), through the conduit tube 46 (see FIG. 5), and further through the communication hole 45 and the space 42, the low pressure accumulator 13 is communicated with, as shown in FIG. Therefore, the space R1
Becomes a low pressure state and has the same pressure as the space R2. However, since the force exerted by the high-pressure refrigerant in the space R3 is larger in the large-diameter piston 31 than in the small-diameter piston 32, the sliding valve body 33 moves to the left and the outlet 2
3 communicates with the first communication port 26, and the introduction port 17 communicates with the second communication port 29 via the space R3 (see FIG. 3).

Therefore, as shown in FIG. 1, the high-temperature high-pressure refrigerant discharged from the compressor 1 is discharged into the discharge pipe 62 and the discharge pipe 35.
4 to flow into the space R3 as shown in FIG. 4, and further to the second communication port 29 and the conduit 27 as shown in FIG. Then, as shown in FIG. 1, it reaches the outdoor heat exchanger 2 through the connection pipe 65, performs a heat radiation effect, is liquefied and condensed, and the liquefied and condensed refrigerant is decompressed by the capillary tube 8 ₁ and then is reversed. stop valve 7 ₂ reached as interior side heat exchanger 3, and cooling the room by vaporizing evaporate perform heat absorption, the connection pipe 64, reaches the conduit 24. Further, as shown in FIG. 3, the first through port 26, the sliding valve body 33, the outlet port 2
3, the refrigerant gas that has entered the accumulator 13 through the suction pipe 36 and has been separated into gas and liquid is the refrigerant discharge pipe 61 and the suction pipe 6.
It reenters the compressor 1 through 3 (see FIG. 1).

Example 2. Next, a second embodiment of the present invention will be described. The second embodiment is defined by claims 1 to 6 of the present invention.
It is another embodiment according to. In the second embodiment, as shown in FIG. 6, the outlet port 23a, which is the low-pressure side outlet of the four-way valve 11a built in the lid portion 14a, is formed by machining, and is directly opened in the accumulator 13a. The other configurations are similar to those of the first embodiment.

With such a structure, the suction pipe 36 connecting the four-way valve 11a and the accumulator 13a.
(See FIG. 3) is not necessary, so that there is an effect that the structure of the refrigerant pipe can be further simplified.

In the first and second embodiments, the four-way valves 11, 11a and the two-way valve 12, which are the control devices for the refrigeration cycle, are built in the lids 14, 14a of the accumulators 13, 13a, and these control devices are used. The surrounding refrigerant passages 16, 52,
Although 53, etc., and connection ports 19, 71, 72, 73, 74, etc. for connection with main components of the refrigeration cycle, etc. are shown, the check valves 7 ₁ , 7 ₂ and the capillary tube 8 are also shown.
You may make it incorporate ₁ and 8 ₂ .

Further, the four-way valve 1 in the above-mentioned first and second embodiments
The specific configurations of the 1, 11a and the two-way valve 12 are not necessarily limited to those shown in the drawings.

Example 3. The third embodiment is an embodiment according to claims 7 and 8 of the present invention. 7 is a sectional view of an air conditioner showing a third embodiment of the present invention.
Reference numeral 1 is a hollow portion as a heat transfer blocking means for reducing heat leak from the high temperature refrigerant flowing through the four-way valve 11b in the lid portion 14b to the low temperature refrigerant in the accumulator 13b.

By providing the hollow portion 81 in this way, the heat transfer area becomes smaller and the heat conduction path becomes longer, so that the high-temperature refrigerant flowing in the four-way valve 11b is changed to the low-temperature refrigerant in the accumulator 13b. The resistance to heat conduction can be increased, and the amount of heat leakage can be greatly reduced. By the way, the capacity of the air conditioner,
Especially, the heating capacity is greatly improved.

Example 4. The fourth embodiment is an embodiment according to claims 7 and 9 of the present invention. 8 is a sectional view of an air conditioner showing a fourth embodiment of the present invention.
2 is a four-way valve 11c in the lid 14c and an accumulator 1
3c, which is a heat insulating material as a heat transfer blocking means for reducing heat leakage from the high temperature refrigerant flowing through the four-way valve 11c to the low temperature refrigerant in the accumulator 13c. The heat insulating material 82 is made of Teflon or the like having a small thermal conductivity coefficient.

By disposing the heat insulating material 82 in this manner, heat transfer between the lid portion 14c and the accumulator 13c is cut off, so that the high temperature refrigerant flowing in the four-way valve 11c is changed to the low temperature refrigerant in the accumulator 13c. The heat leak amount can be greatly reduced, and the capacity of the air conditioner, especially the heating capacity, can be significantly improved.

[0044]

Since the present invention is constructed as described above, it has the following effects.

According to the air conditioner of the first aspect of the present invention, the air conditioner has a refrigeration cycle including a compressor, an outdoor heat exchanger, an indoor heat exchanger and an accumulator as main components, and a four-way valve and a two-way valve. With a control device for the refrigeration cycle, the control device is built in the lid part of the accumulator, and the connection port between the control device and the main device and the refrigerant passage around the control device are arranged in the lid part. The structure of the refrigerant piping in the outdoor unit is simplified and the number of brazing points is greatly reduced, which has the effect of facilitating assembly. Further, since the types and the usage amounts of the refrigerant pipes and the joints of the refrigerant pipes are reduced, the cost can be reduced. Further, since the refrigerant piping structure is simplified, the outdoor unit can be downsized, and the brazing points where refrigerant leakage easily occurs are greatly reduced, so that the reliability is improved.

According to the air conditioner of the second aspect of the present invention, the four-way valve has the first opening attached to the lid and communicating with the indoor heat exchanger, and the outdoor heat exchange attached to the lid. A second opening communicating with the container, a lead-out opening attached to the lid and communicating with the accumulator, a cylinder formed in the lid by machining the lid, a piston arranged in the cylinder, and a lid And a sliding valve that selectively connects the outlet to the first passage or the second passage in association with the piston, so that a four-way valve can be built in the lid and used. This has the effect of reducing the number of refrigerant pipes and brazing points used.

According to the air conditioner of claim 3 of the present invention, the two-way valve is formed by machining the valve seat, which is formed in the lid by machining the lid, and is machined in the lid while sandwiching the valve seat. Since the two refrigerant passages, one of which is connected to the compressor and the other of which is connected to the outdoor heat exchanger, and the plunger which moves forward and backward toward the valve seat are provided, the two-way valve is provided in the lid portion. By incorporating it, there is an effect that it is possible to reduce the number of refrigerant pipes and brazing points to be used.

According to the air conditioner of the fourth aspect of the present invention, since the outer shape of the lid portion is formed by forging, the outer shape of the lid portion can be manufactured by forging, and the number of machining points can be reduced. There is an effect.

According to the air conditioner of the fifth aspect of the present invention, since the connecting refrigerant pipe connecting the connecting port and the main equipment is brazed to the lid portion in the furnace, the structure can be made robust. The effect is that you can do it.

According to the air conditioner of claim 6 of the present invention, since the outlet of the four-way valve connected to the accumulator is directly opened in the accumulator, the structure is simplified,
There is an effect that the number of parts can be reduced.

According to the seventh aspect of the present invention, the high-temperature refrigerant flows in the control device and the refrigerant passage around the control device, and the high-temperature refrigerant leaks heat to the low-temperature refrigerant in the accumulator. Since the heat transfer blocking means for reducing the amount is provided, there is an effect that the capacity of the air conditioner, particularly the heating capacity can be significantly improved.

According to the air conditioner of claim 8 of the present invention, since the heat transfer blocking means is the hollow portion provided inside the lid portion, the capacity of the air conditioner, particularly the heating capacity, is greatly improved. The effect is that you can.

According to the air conditioner of claim 9 of the present invention, since the heat transfer interrupting means is the heat insulating material arranged between the lid portion and the accumulator, the capacity of the air conditioner, particularly the heating capacity is greatly increased. There is an effect that can be improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an air conditioner showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a structure near an accumulator of the air conditioner according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view taken along plane III of FIG.

4 is a cross-sectional view of a main part taken along the plane IV of FIG.

FIG. 5 is a plan view of FIG.

FIG. 6 is a sectional view of an accumulator showing a second embodiment of the present invention.

FIG. 7 is a sectional view of an air conditioner showing a third embodiment of the present invention.

FIG. 8 is a sectional view of an air conditioner showing a fourth embodiment of the present invention.

FIG. 9 is a configuration diagram showing a refrigeration cycle of a general air conditioner.

FIG. 10 is a perspective view showing an outdoor unit of a conventional air conditioner.

[Explanation of symbols]

 1 Compressor 2 Outdoor heat exchanger 3 Indoor heat exchanger 11, 11a to 11c Four-way valve 12 Two-way valve 13, 13a to 13c Accumulator 14, 14a to 14c Lid portion 19, 71 to 74 Connection port 23 Outlet port 26 First through hole 29 Second through hole 31 Piston 33 Sliding valve body 34 Cylinder 52, 53 Refrigerant passage 54 Valve seat 56 Plunger 81 Hollow part (heat transfer blocking means) 82 Thermal insulation (heat transfer blocking means)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsuyoshi Kozai 3-18-1 Koshika, Shizuoka City Mitsubishi Electric Co., Ltd. (72) Inventor Isamu Nakajima 3-18-1 Oka Shizuoka Mitsubishi Electric Co., Ltd. Shizuoka Plant (72) Inventor Hiroki Andachi 3-18-1 Ogashi, Shizuoka City Mitsubishi Electric Engineering Lining Co., Ltd.Nagoya Office Shizuoka Branch (72) Inventor Tsutomu Ishiguro 3-18-1 Oga Shizuoka Mitsubishi Electric Corporation Company Shizuoka Factory (72) Inventor Seizo Watanabe 3-18-1, Oga, Shizuoka City Mitsubishi Electric Corporation Shizuoka Factory

Claims (9)

[Claims] 1. An air conditioner comprising a refrigeration cycle mainly comprising a compressor, an outdoor heat exchanger, an indoor heat exchanger and an accumulator, and a refrigeration cycle control device having a four-way valve and a two-way valve. In the machine, the control device is built in the lid part of the accumulator, and a connection port between the control device and the main device and a refrigerant passage around the control device are arranged in the lid part. Machine. 2. A four-way valve has a first opening which is attached to the lid and communicates with the indoor heat exchanger, and a second opening which is attached to the lid and communicates with the outdoor heat exchanger. An outlet that is attached to the lid and communicates with an accumulator, a cylinder formed in the lid by machining the lid, a piston arranged in the cylinder, and a piston arranged in the lid. The air conditioner according to claim 1, further comprising: a slide valve that is interlocked and selectively connects the outlet to the first passage or the second passage. 3. A two-way valve is a valve seat formed in the lid portion by machining the lid portion, and two refrigerant passages formed in the lid portion by sandwiching the valve seat by machining. The air conditioner according to claim 1, further comprising: a compressor connected to the compressor and the other connected to an outdoor heat exchanger; and a plunger that moves forward and backward toward the valve seat. 4. The air conditioner according to claim 1, wherein the outer shape of the lid is formed by forging. 5. The air conditioner according to claim 1, wherein a connecting refrigerant pipe for connecting the connection port and the main device is brazed to the lid in the furnace. 6. The air conditioner according to claim 1, wherein an outlet of the four-way valve connected to the accumulator is directly opened in the accumulator. 7. A heat transfer interrupting means for reducing the amount of heat leak from a high-temperature refrigerant to a low-temperature refrigerant in an accumulator from a high-temperature refrigerant flowing in a control device and a refrigerant passage around the control device. The air conditioner according to claim 1, wherein: 8. The air conditioner according to claim 7, wherein the heat transfer blocking means is a hollow portion provided inside the lid portion. 9. The air conditioner according to claim 7, wherein the heat transfer blocking means is a heat insulating material disposed between the lid portion and the accumulator.