JPH0719667A - Air conditioner - Google Patents

Abstract

PURPOSE:To prevent interference between tubes or to reduce vibration due to a tube system by fixedly integrating a refrigerating cycle control unit with other components and to reduce the cost, the size and to prevent leakage of refrigerant by omitting a refrigerant tube in an outdoor unit to reduce refrigerant tubes and brazing positions. CONSTITUTION:An air conditioner comprises a refrigerating cycle having a compressor 1, an outdoor heat exchanger 2, an indoor heat exchanger 3 and an accumulator as main units and a controller for the cycle having a two-way valve 11, wherein the valve 11 is incorporated in the lid 13 of the accumulator 12 or the lid of the compressor 1, and connecting ports 17, 24, 26 to the controller and the main units of the cycle are arranged.

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. 19 is a configuration diagram showing a refrigeration cycle of a general air conditioner. As shown in FIG. 19, the air conditioner includes a compressor (1), an outdoor heat exchanger (2), an indoor heat exchanger (3), an accumulator (4), which are main components of a refrigeration cycle, and a refrigeration cycle. Four-way valve (5), two-way valve (6), check valve (7 ₁ ) (7 ₂ ) and capillary tube (8 ₁ ) which are the control equipment of
(8 ₂ ) etc. are connected by a refrigerant pipe (9). These devices are the outdoor units as shown in FIG.
Refrigerant pipe (A) and (9 ₁₎ refrigerant pipe of the indoor unit (B) and (9 ₂₎ are connected via a connecting element (10).

In the above-mentioned general air conditioner, the four-way valve (5) can be switched with the two-way valve (6) used during cooling overload operation or the like being closed. . 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, Shoukai 60-796.
The one described in Japanese Patent No. 71 is used. In this conventional air conditioner, the outdoor unit (A) has a compressor (1), an outdoor heat exchanger (2), an accumulator (4), a four-way valve (5), a two-way valve, as shown in FIG. Valve (6), check valve
(7 _1), the service valve (37) (38) and capillary tube _(81), further a number of refrigerant pipes connecting these devices (9
₁ ) was bent and arranged in various directions.

FIG. 21 is a configuration diagram showing a refrigeration cycle of a general air conditioner corresponding to the inventions of claims 3 to 5. As shown in FIG. 21, the air conditioner includes a compressor (1), an outdoor heat exchanger (2), an indoor heat exchanger (3), an accumulator (4), which are main components of the refrigeration cycle, and a refrigeration cycle. four-way valve is a control device (5), two-way valve (6), the check valve (7 ₁₎ (7 ₂₎ and the capillary tube (8 ₁₎ (8 ₂₎ or the like, connected by a refrigerant pipe (9) Is configured. The configuration so far is shown in FIG.
Although it is the same as that of the compressor, the high pressure switch (110) and the low pressure switch (111) are respectively provided on the discharge pipe and the suction pipe sides of the compressor (1).
Are connected. Then, these devices, as shown in FIG. 21, the refrigerant pipe of the outdoor unit (A) and (9 ₁₎ refrigerant pipe of the indoor unit (B) and (9 _2), via a connector (112) It is connected. Further, (113) indicates a discharge muffler.

[0006] In the general air conditioner shown in Fig. 21, the four-way valve (5) can be switched to switch between indoor cooling and heating. Also,
The two-way valve (6) is opened by the operation of the high pressure switch (110) and the low pressure switch (111) during an overload condition during cooling or during low temperature startup during heating, and functions as a high / low pressure bypass circuit. Also, the solid arrow in the figure indicates the flow of the refrigerant during heating, and the dashed arrow indicates the flow of the refrigerant during cooling.

In this conventional air conditioner, the outdoor unit A has a compressor (1), an outdoor heat exchanger (2), an accumulator (4), a four-way valve (5), and a two-way valve (2) as shown in FIG. Way valve
(6), a check valve (7 _1), and the capillary tube _(81), a high pressure switch (110), a low pressure switch (111), further a number of refrigerant pipes connecting these devices (9 ₁₎ As shown in the figure, it was bent and arranged in various directions.

[0008]

The conventional air conditioner is
Since it is configured as described above and holds each control device in the outdoor unit (A) by the refrigerant pipe (9 ₁ ), it is necessary to prevent interference with other piping systems, or to prevent the interference. An outdoor unit that requires a large space for piping
(A) There was a problem that the entire size increased. Furthermore, since between the respective devices in the outdoor unit (A) has been connected by the refrigerant pipe (9 _1), there is a problem that the kind and amount of the refrigerant pipe required (9 ₁₎ is large and the cost becomes high It was Further, since there are many brazing points of the refrigerant pipe, there is a problem that the refrigerant easily leaks. Furthermore, the two-way valve (6), high-pressure switch (110), and low-pressure switch (111) are close to the compressor (1), which is the vibration source, and easily vibrate, so measures to prevent resonance of the installed piping system should be taken. Was needed.

The present invention has been made to solve the above problems, and prevents the interference between pipes or vibrates due to the piping system by integrating and fixing the refrigeration cycle control device with other parts. The refrigerant pipe inside the outdoor unit can be omitted,
By reducing the refrigerant pipes and brazing points to be used, it is possible to achieve cost reduction, downsizing, prevention of refrigerant leakage, and to obtain an air conditioner that can reduce troublesome brazing work. .

[0010]

In the air conditioner according to the invention of claim 1, a two-way valve as a control device is built in the lid portion of the accumulator, and the control device and a main device of the refrigeration cycle are connected. The main configuration is the provision of ports.

In the air conditioner according to the second aspect of the present invention, a two-way valve as a control device is built in the lid portion of the compressor, and a connection port between the control device and a main device of the refrigeration cycle is arranged. That is the main structure.

In the air conditioner according to the third aspect of the invention, the lid portion formed by forging and machining the accumulator,
The main configuration is that a low-voltage switch that introduces the internal pressure of the accumulator as control pressure is buried.

An air conditioner according to a fourth aspect of the present invention is a high-pressure switch for introducing an internal pressure inside the compressor or the discharge muffler as a control pressure into a lid formed by forging and machining the compressor or the discharge muffler. The main configuration is that the was buried.

In the air conditioner according to a fifth aspect of the present invention, a four-way valve cylinder portion is integrally formed with a lid portion formed by forging / machining an accumulator, and a high pressure opening / closing for introducing the internal pressure of the cylinder as a control pressure. The main configuration is that low-pressure switches for introducing the internal pressure inside the switch and the accumulator as control pressure are embedded in the lid.

[0015]

In the air conditioner according to the present invention, the structure of the refrigerant piping system in the outdoor unit can be reduced to reduce the space required for preventing interference between the piping systems. Further, the refrigerant pipes in the outdoor unit can be omitted so that the refrigerant pipes and brazing points to be used are reduced.

Further, the refrigerant pipe connecting the low-pressure switch and the low-pressure side refrigerant pipe system and the refrigerant pipe connecting the high-pressure switch and the high-pressure side refrigerant pipe system can be omitted to reduce the refrigerant pipes and brazing points to be used. Also prevent vibration.

Further, the piping structure can be simplified by integrating the accumulator, the four-way valve, and the high-pressure / low-pressure switch, which are the main components in the refrigerant circuit.

[0018]

【Example】

Example 1. FIG. 1 is a configuration diagram of an air conditioner showing a first embodiment according to the invention of claim 1. The two-way valve (11) is built in the lid portion (13) of the accumulator (12). The refrigeration cycle of this air conditioner is similar to the general one shown in FIG. 19, and the refrigerant is a solid arrow (compressor) during heating operation.
(1) → Four-way valve (5) → Indoor heat exchanger (3) → Capillary tube (8 ₂ ) → Check valve (7 ₁ ) → Outdoor heat exchanger (2) → Four-way valve (5)
→ Accumulator (12) → Compressor (1)) along the broken line arrow (Compressor (1) → Four-way valve (5) → Outdoor heat exchanger (2) → Capillary tube (8 ₁ ) → the check valve (7 ₂₎ → indoor heat exchanger (3) → four-way valve (5) → the accumulator (12) → flowing along the compressor (1)). Then, by switching the four-way valve (5), it is possible to switch between cooling and heating.

FIG. 2 shows the accumulator (12) in FIG.
FIG. 3 is a perspective view showing a structure in the vicinity thereof, and FIG. 3 is a cross-sectional view taken along plane I of FIG. Accumulator as shown in these figures
In the lid portion (13) of (12), a two-way valve (11) that is a control device of the refrigeration cycle and a refrigerant passage (14) (15) around these control devices.
And connection ports (16) and (17) with other devices are formed.

Two-way valve (11) and refrigerant passage around the two-way valve (11)
(14) and (15) will be described. As shown in FIG. 3, the lid (1
A valve seat (18) is formed in 3) and a valve seat is formed in the tube (19).
A plunger (20) that moves back and forth toward (18) is housed. This plunger (20) doubles as the valve body,
The spring force of the spring (21) constantly presses the valve seat (18). On the other hand, a solenoid coil (22) is provided to retract the plunger (20) from the valve seat (18) against the spring force of the spring (21). A refrigerant passage (14) (15) is formed around the two-way valve (11) with a valve seat (18) interposed therebetween, and the refrigerant passage (14) is connected to the compressor (1) through a port ( communicated to 16), the refrigerant passage (15) communicates with the check valve (7 ₁₎ (7 ₂₎ and the capillary tube (8 ₁₎ (8 ₂₎ (connection ports with reference to FIG. 1) (17). Reference numeral (23) is a lid for sealing one end of the refrigerant passage (14).

Next, the connection relationship between the lid portion (13) of the accumulator (12) and other equipment will be described. As shown in FIG. 1, the discharge pipe (25) of the four-way valve (5) is connected to the discharge pipe (24) provided in the lid portion (13). Further, the compressor (1) is connected to the refrigerant outlet pipe (26) (see FIG. 1) communicating with the inside of the accumulator (12).
Connect the suction pipe (27) of the connection port (16) (see Fig. 3)
Connect the discharge pipe (28) of the compressor (1) to the connection port (17).
Check valve (7 ₁ ) (7 ₂ ) and capillary tube (see Fig. 3)
Connect the connection pipe (29) with (8 ₁ ) and (8 ₂ ).

Now, the operation of the first embodiment will be described. In normal operation, the valve seat (18) is closed (Fig. 3
Refrigerant does not flow into the refrigerant passage (15), but during overload operation due to a rise in outside air temperature, etc., the pressure of the refrigerant discharged from the compressor (1) by flowing the refrigerant into the refrigerant passage (15), Energize the solenoid (22) of the pilot valve to lower the temperature. That is, since the valve seat (18) in the pilot valve is raised, the discharge pipe (28) and the connection pipe (29) communicate with each other through the conduction path (15) and the connection port (17).

Example 2. Next, a second embodiment according to the invention of claim 2 will be described. In the second embodiment, as shown in FIG. 4, the two-way valve (11a) is built in the lid portion (30) of the compressor (1a), and other configurations are the same as those shown in FIG. It is similar to the standard one.

FIG. 5 shows the accumulator (12) in FIG.
FIG. 6 is a perspective view showing a structure in the vicinity thereof, and FIG. 6 is a cross-sectional view taken along plane II of FIG. As shown in these figures, the lid (30) of the compressor (1a) has a two-way valve, which is a control device of the refrigeration cycle.
Refrigerant passages (31) and (32) around the control device (11a) and connection ports (34) and (35) with other devices are formed.

With such a structure, the two-way valve
Since the pipe length of the discharge pipe (28) (see FIG. 6) connecting (11a) and the compressor (1a) can be reduced, there is an effect that the structure of the refrigerant pipe can be further simplified.

In the first embodiment, the accumulator (1
The two-way valve (11) (11a), which is a control device of the refrigeration cycle, is incorporated in the lid portion (13) of 2), and in the lid portion (30) of the compressor (1a) in the second embodiment. Refrigerant passage around control equipment (14) (15) (3
1) (32) etc., and connection port for main equipment of refrigeration cycle
(16) (17) (33) (34) (35), etc. are shown, but four-way valve (5), check valve (7 ₁ ) (7 ₂ ), service valve (37)
(38), the capillary tube (8 ₁ ) (8 ₂ ) or the like may be incorporated.

In the first and second embodiments described above, the two-way valve, which is a control device for the refrigeration cycle, is built in the lid of the accumulator and compressor, but it may be built in the lid of another closed container.

Further, the two-way valve (1
1) The specific configuration of (11a) is not necessarily limited to that shown in the drawings.

Example 3. FIG. 7 is a configuration diagram showing an air conditioner showing a third embodiment according to the invention of claim 3. The low pressure switch (111) is a lid (1) of the accumulator (4) which is a low pressure container.
It is buried in 14). The lid (114) is forged to have a shape and then is cut to form a hole and accumulator body.
A joint surface with (115) is formed. FIG. 8 is a sectional view of the lid portion (114) of the low voltage switch (111) portion. As shown in the figure, the low-voltage switch (111) is inserted in the portion where the lid (114) is cut. A hole (116) communicating with the inside of the lid (114) is led to the switch (111). The joint portion of the upper surface of the lid portion (114) with the switch (111) is joined by brazing or welding.

Next, the operation will be described. Low-voltage switch (1
11) transmits the internal pressure (low pressure) of the accumulator (4) to the disc (117) through the lid connection port (116 ₁ ) communicating with the inside of the lid (114) and the connection port (116 ₂ ) of the low pressure switch. . The disc (117) deforms and moves up and down when the applied pressure reaches the set pressure. Then, when the pressure becomes equal to or lower than the set pressure, the disc (117) is drawn inside the lid portion (114) and is deformed downward in the drawing. Then, the shaft (119) supported by the guide (118) moves along with the movement of the disc (117), and the contact plate (120) joined to the upper part of the shaft (119) lowers to lower the contact (121 ) Is open. Then, when the pressure rises again, the disc (117) is pushed toward the shaft (119) side and deforms to return to the original state, so that the contact (121) returns to the closed state. Then, by detecting the open / closed state, the two-way valve (6) is opened / closed to bypass the high pressure side refrigerant system and the low pressure side refrigerant system. In FIG. 21, the low pressure side refrigerant system is connected to the liquid piping portion as the bypass side, but may be directly bypassed to the accumulator (4) connecting portion as shown in FIG. The basic refrigeration cycle of this air conditioner is similar to the general refrigeration cycle shown in FIG. 21, and the refrigerant is a solid line arrow (compressor (1) → four-way valve (5) → indoor heat exchange) during heating operation. Device (3) → capillary tube (8 ₂ ) → check valve (7 ₁ ) → outdoor heat exchanger
(2) → four-way valve (5) → accumulator (4) → compressor (1)) along the broken line arrow (compressor (1) → four-way valve)
(5) → the outdoor heat exchanger (2) → capillary tube (8 ₁₎ → the check valve (7 ₂₎ → indoor heat exchanger (3) → four-way valve (5) → the accumulator (4) → the compressor (1)) flows along. And four-way valve
By switching (5), it is possible to switch between cooling and heating modes.

In the above embodiment, the low voltage switch (111)
And the lid portion (114) of the accumulator (4) had a separable shape, but as shown in FIG. 10, the low-voltage switch shown in FIG.
The outer portion (122) of (111) may be formed by cutting the lid (114).

Further, since the buried portion is the lid portion (114) for forging and cutting, if the through hole (123) shown in FIG. 11 is formed in the lid portion (114), the refrigerant pipe ( Available as 9 ₁ ).

As shown in FIGS. 12 and 13, the low pressure switch (111) is inserted into a through hole (124) formed by cutting in the lid (114) of the accumulator (4), and brazing is performed. In the case of joining, it is possible to use a general commercial product for the low-voltage switch (111). In addition, low-voltage switch (111)
Can be fixed to the fixing portion (125) integrally formed with the lid portion (114) of the accumulator (4) by the binding band (127) attached through the attachment hole (126). Note that FIG. 12 is a perspective view showing the mounting relationship of the low-voltage switch (111) to the accumulator (4). FIG. 13 is a sectional view showing this embodiment. (The cross-sectional shape inside the low-voltage switch is omitted.)

Example 4. Next, a fourth embodiment according to the invention of claim 4 will be described. In the fourth embodiment, the lid (12) of the compressor (1) or the discharge muffler (113) which is a high-pressure container is used.
The high voltage switch (110) is embedded in 8). The component structure is the same as that of the third embodiment except that the lid portion (128) is a high-pressure container and the control component is a high-voltage switch (110). FIG. 14 is a sectional view of the lid portion (128) of the high voltage switch (110) portion showing the present embodiment. As shown in the figure, the high-voltage switch (110) is inserted in the portion where the lid (128) is cut. Further, a hole (129) communicating with the inside of the lid portion (128) is led to the switch (110). The joint portion of the upper surface of the lid portion (128) with the switch (110) is joined by brazing or welding.

Next, the operation will be described. High-voltage switch (1
10) The internal pressure (high pressure) of the compressor (1) or the discharge muffler (113) is passed through the lid connection port (129 ₁ ) communicating with the inside of the lid (128) and the connection port (129 ₂ ) of the high pressure switch. Tell the disc (117). The disc (117) deforms and moves up and down when the applied pressure reaches the set pressure. When the pressure becomes equal to or higher than the set pressure, the disc (117) is pushed to the outside of the lid (128) and deforms upward in the figure.
Then, the shaft (119) supported by the guide (118) becomes the disc (117).
The contact plate (120) joined to the upper part of the shaft (119) rises up, and the contact (121) is opened. Then, when the pressure is reduced again, the disc (117) moves to the lid (12
8) The contact (12
1) returns to the closed state. The two-way valve (6) is opened and closed by detecting this open / closed state. The high pressure side refrigerant system and the low pressure side refrigerant system are bypassed.

Further, as in the third embodiment, as shown in FIG. 15, the outer portion (122) of the high voltage switch (110) is attached to the lid portion (128).
It may be formed by cutting.

Further, as in the third embodiment, the lid portion (12
By forming the through hole (123) as shown in FIG. 16 to 8), it can be used as a refrigerant pipe (9 _1).

Example 5. Next, a fifth embodiment according to the invention of claim 5 will be described. Figure 18 shows the high / low voltage switch (11
It is a cross-sectional view of a lid portion (114) including a (0) (111) portion. In the fifth embodiment, as shown in FIG. 17, the cylinder portion (130) of the four-way valve (5) is attached to the lid portion (114) of the accumulator (4) which is a low pressure container.
Are integrated and other four-way valve members are attached. Then, the cylinder part of the four-way valve (13
(0) A high pressure switch (110) is embedded in the side surface of the cylinder part (130) of the four-way valve through a hole (131) penetrating therethrough.
Further, a low-voltage switch (111) is embedded in the base lid (114) as shown in the third embodiment.

The basic operation is the same as in the third and fourth embodiments.

Further, the specific configurations of the high / low pressure switches (110) (111) and the four-way valve (5) in the fourth, fifth and sixth embodiments are not necessarily limited to those shown in the drawings.

[0041]

According to the air conditioner of the present invention, the lid of the accumulator or the lid of the compressor incorporates a two-way valve as a control device, and the control device and the refrigerator. Since the connection port with the main equipment of the cycle is arranged, the stability of the two-way valve is increased and the vibration of the piping system is reduced.
This has the effect of preventing interference. Furthermore, it is possible to reduce the space that was conventionally required to prevent interference, and it is possible to reduce the size of the outdoor unit. In addition, by reducing the length of the connecting pipe and reducing the number of refrigerant pipes and brazing points to be used, it is possible to reduce costs, prevent refrigerant leakage, and reduce troublesome brazing work. There is.

According to the air conditioner of the third aspect of the present invention, since the low pressure switch is built in the cover of the accumulator and the low pressure is directly guided to the element, the connecting pipe can be reduced and the accumulator having a large inertia can be provided. Since the low-voltage switch is directly fixed to, it is possible to prevent vibration due to pipe resonance due to the shape of the connecting pipe. Further, by forming the through hole in the lid, it is possible to connect a pipe unrelated to the accumulator system.

According to the air conditioner of the fourth aspect of the present invention, a high-pressure switch is built in the compressor / discharge muffler,
Since the high pressure is directly introduced, the connecting piping can be reduced.

According to the air conditioner of the fifth aspect of the present invention, by embedding the four-way valve, the high pressure switch and the low pressure switch in the lid portion of the accumulator, the main components in the refrigerant circuit are integrated. Therefore, the piping structure can be greatly simplified.

[Brief description of drawings]

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

FIG. 2 is a perspective view showing a structure near the accumulator of FIG.

FIG. 3 is a cross-sectional view of the accumulator lid portion taken along the plane I of FIG.

FIG. 4 is a configuration diagram showing an air conditioner of a second embodiment according to the invention of claim 2.

5 is a perspective view showing a structure in the vicinity of the compressor shown in FIG.

6 is a cross-sectional view of the compressor lid section taken along the plane II of FIG.

FIG. 7 is a perspective view showing an accumulator of an air conditioner of a third embodiment according to the invention of claim 3.

8 is a cross-sectional view of an accumulator lid portion including the low pressure switch portion of FIG.

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

FIG. 10 is a sectional view of an accumulator lid portion of another embodiment according to the invention of claim 3;

FIG. 11 is a sectional view of an accumulator lid portion of another embodiment according to the invention of claim 3;

FIG. 12 is a perspective view showing an accumulator of another embodiment according to the invention of claim 3;

13 is a sectional view of the accumulator portion of FIG. 12 (a sectional view of a low-voltage switch portion is omitted).

FIG. 14 is a sectional view of a compressor or a discharge muffler lid portion of a fourth embodiment according to the invention of claim 4.

FIG. 15 is a sectional view of a compressor or a discharge muffler lid portion of another embodiment according to the invention of claim 4;

FIG. 16 is a sectional view of a compressor or a discharge muffler lid portion of another embodiment according to the invention of claim 4.

FIG. 17 is a perspective view showing an accumulator of an air conditioner of a fifth embodiment according to the invention of claim 5.

18 is a cross-sectional view of the accumulator lid portion including the four-way valve cylinder portion and the high / low pressure switch portion of FIG.

FIG. 19 is a configuration diagram showing a refrigeration cycle of a general air conditioner.

20 is a perspective view showing a machine room portion of the outdoor unit of FIG.

FIG. 21 is a configuration diagram showing a refrigeration cycle of a general air conditioner corresponding to the inventions of claims 3 to 5.

22 is a perspective view showing a machine room portion of the outdoor unit of FIG. 21. FIG.

[Explanation of symbols]

 1, 1a Compressor 2 Outdoor heat exchanger 3 Indoor heat exchanger 4 Accumulator 5 Four-way valve 6, 11, 11a Two-way valve 12 Accumulator 13 Lid portion 16, 17, 24, 26 Connection port 29 Connection pipe 30 Lid portion 34, 35, 36 Connection port 110 High-pressure switch 111 Low-voltage switch 113 Discharge muffler 114 Lid 128 Lid 130 Cylinder A Outdoor unit B Indoor unit

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] August 23, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Kozai 3-18-1 Ogashi, Shizuoka City, Shizuoka Manufacturing Company (72) Inventor Toshihiko Enomoto 3-18-1, Oka, Shizuoka Mitsubishi Electric Corporation Shizuoka Factory (72) Inventor Kazunobu Kijima 3-18-1, Oga, Shizuoka City Mitsubishi Electric Co., Ltd. Shizuoka Factory

Claims (5)

[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 control device for the refrigeration cycle having a two-way valve, In the lid of the accumulator, while incorporating a two-way valve as the control device,
An air conditioner comprising a connection port for connecting the control device and the main device of the refrigeration cycle. 2. An air conditioner provided with a refrigeration cycle mainly comprising a compressor, an outdoor heat exchanger, an indoor heat exchanger and an accumulator, and a control device for the refrigeration cycle having a two-way valve, An air conditioner in which a two-way valve as the control device is built in a lid portion of the compressor, and a connection port for connecting the control device and the main device of the refrigeration cycle is arranged. 3. 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 air conditioner, a low-pressure switch for introducing the internal pressure of the accumulator as a control pressure is embedded in a lid formed by forging / machining the accumulator. 4. 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, an air conditioner characterized in that a lid formed by forging / machining the compressor or the discharge muffler is embedded with a high-pressure switch for introducing the internal pressure of the compressor or the discharge muffler as a control pressure. Machine. 5. 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 lid part formed by forging and machining of the accumulator is integrally formed with the four-way valve cylinder part, and the internal pressure inside the cylinder is introduced as the control pressure, and the internal pressure inside the accumulator is introduced as the control pressure. An air conditioner characterized in that each low-voltage switch is embedded in the lid.