JPH03181761A - Liquid receiver and air conditioner equipped with the liquid receiver - Google Patents

Abstract

PURPOSE:To prevent an occurrence of flash gas and further enable a positive preven tion of displaced flow to be attained by a method wherein an inner end opening a hot gas pipe is positioned in liquid refrigerant in a main body. CONSTITUTION:Hot gas passes through a hot gas pipe 64 and flows into a main body 61. At this time, a lower end opening of an inner vertical part 64c is positioned in liquid refrigerant. The gas is injected into the liquid refrigerant, moves up under its bubbled state in the liquid refrigerant. During its movement, the hot gas is heat exchanged with the liquid refrigerant and then a part of the hot gas is condensed. In addition, the hot gas injected into the liquid refrigerant is injected into a partitioned chamber 66 and only the liquid refrigerant may flow out of the second liquid refriger ant pipe 63 without being directly flowed to the first and second liquid refrigerant pipes 62 and 63. Accordingly, since the inner end opening of the hot gas pipe 64 is located in the liquid refrigerant within the main body 61 of a liquid receiving container, the hot gas fed from the hot gas pipe 64 does not directly push the liquid refrigerant, resulting in that the liquid refrigerant may not be flowedout of the main body 61. Only the liquid refrigerant is flowed out of the first or second liquid refrigerant pipes 62, 63 so as to prevent an occurrence of flash gas and thus a displaced flow can be positively prevented.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a liquid receiver for storing liquid refrigerant and an air conditioner equipped with the liquid receiver, and particularly relates to a hot gas introduction structure. be.

(Prior Art) Generally, a liquid receiver installed in an air conditioner includes an inflow pipe for introducing liquid refrigerant from a condenser into the main body, as disclosed in Japanese Utility Model Publication No. 11411/1982. Some refrigerants are constructed by connecting to the main body an outflow pipe that leads out the liquid refrigerant in the main body to the evaporator, and a hot gas pipe that introduces hot gas discharged from the compressor into the main body. The high pressure on the discharge side of the compressor is controlled to a predetermined value by guiding hot gas from the compressor to the receiver.

(Problem to be Solved by the Invention) In the liquid receiver described above, the inner end of the hot gas pipe is located at the upper part of the main body and is opened, and the hot gas is configured to be introduced into the gas refrigerant inside the main body. It had been.

However, this has the problem that the high-pressure hot gas pushes out the liquid refrigerant inside the main body, and the refrigerant flowing into the evaporator becomes two-phase gas-liquid, generating flash gas, causing uneven flow and reducing the refrigerating capacity. Ta. In particular, when hot gas is introduced into the gas refrigerant inside the main body as described above, heat exchange occurs only at the liquid surface of the refrigerant, so the gas refrigerant is difficult to condense.
The above flash gas was easily generated.

The present invention has been made in view of the above, and an object of the present invention is to prevent the generation of flash gas and suppress the reduction in refrigerating capacity.

(Means for Solving the Problems) In order to achieve the above object, the means taken by the present invention is that the inner end opening of the hot gas pipe is located in the liquid refrigerant inside the main body.

Specifically, as shown in FIG. 1, the measures taken by the invention according to claim (1) first include an inflow pipe (62) for introducing liquid refrigerant into the main body (61); An outflow pipe (63) that brings out the liquid refrigerant inside the main body (61) and a hot gas pipe (64) that introduces hot gas into the main body (61) are connected to the main body (61).
1). And the outflow pipe (63)
is formed such that the inner end opening is located at the lower part within the main body (61). Furthermore, the inner end of the hot gas pipe (64) is configured to extend downward into the main body (61) so that the inner end opening is located in the liquid refrigerant.

Further, the means taken by the invention according to claim (2) is that in the invention according to claim (1), at least the inner end opening of the outflow pipe (63) and the hot gas pipe are provided in the lower part of the main body (61). A baffle plate (65) located between the inner end opening of (64)
The configuration is such that

Furthermore, the measures taken by the invention according to claim (3) are as follows:
A plurality of user-side heat exchangers (5), (5), . A refrigerant circuit (3
) is provided. The liquid line (33) between the reheat exchanger (2a) and (5) in the refrigerant circuit (3)
) has a heat source side heat exchanger (2a) and a user side heat exchanger (5).
Claim (1) or ('2J
A liquid receiver (6) as described is provided. Furthermore, a bypass line (44) is provided, one end of which is connected to the discharge side of the compressor (1), and the other end of which is connected to the hot gas pipe (64) of the liquid receiver (6), so that hot gas can freely flow therethrough. The structure is as follows.

(Operation) With the above configuration, in the invention according to claim (1), the main body (
The liquid refrigerant is introduced into the main body (61) through the inflow pipe (62) and stored therein, and then the liquid refrigerant in the main body (61) is introduced into the main body (61) through the outflow pipe (62) and stored therein.
3).

Specifically, in the invention according to claim (3), the compressor (1)
The gas refrigerant discharged from the refrigerant is condensed in the heat source side heat exchanger (2a) to become a liquid refrigerant, and the liquid refrigerant is introduced into the main body (61) via the liquid line (33). After that, the main body (61)
The liquid refrigerant inside flows through the liquid line (33) to the user-side heat exchanger (5), evaporates, and returns to the compressor (1).

Inside the main body (61) is a hot gas pipe (64).
For example, in the invention according to claim (3), when the pressure of the liquid refrigerant in the liquid line (33) decreases, the hot gas, which is a high-pressure gas refrigerant, flows from the bypass line (44) to the main body (61). The liquid refrigerant pressure is maintained at a predetermined value.

At that time, the hot gas introduced into the main body (61) is spouted into the liquid refrigerant because the inner end opening of the hot gas pipe (64) is located in the liquid refrigerant, and the hot gas is ejected into the liquid refrigerant. is not forced out into the outflow pipe (63), and some of it will condense during movement within the liquid refrigerant.

Further, in the invention according to claim (2), the hot gas pipe (6
3) and the inner end opening of the outflow pipe (63).
Since there is a hot gas in the hot gas pipe (64)
The refrigerant does not directly flow into the outflow pipe (63), and only the liquid refrigerant flows out from the outflow pipe (63).

(Effect of the invention) Therefore, according to the invention according to claim (1), since the inner end opening of the hot gas pipe (64) is located in the liquid refrigerant in the main body (61), the hot gas pipe ( 64) Since the hot gas introduced from the main body (61) does not directly press the liquid refrigerant, the liquid refrigerant is not pushed out from the main body (61), and only the liquid refrigerant flows out from the outflow pipe (63), generating flash gas. It is possible to reliably prevent drifting. In addition, since the hot gas is ejected into the liquid refrigerant, the heat exchange area between the hot gas and the liquid refrigerant can be increased compared to the conventional method, which makes it easier for the hot gas to condense and generate flash gas. can be reliably prevented.

Further, according to the invention according to claim '2J, a baffle plate (65) is provided between the opening of the hot gas pipe (64) and the outflow pipe (63).
), it is possible to restrict the movement of hot gas to the outflow pipe (63), thereby making it possible to more reliably prevent the generation of flash gas.

Further, according to the invention according to claim (3), by introducing hot gas into the liquid receiver (6), the pressure of the liquid refrigerant can be maintained at a predetermined value, and at the same time, generation of flash gas can be prevented. This makes it possible to reliably prevent a decrease in refrigerating capacity.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

As shown in Figure 3, (X) is one outdoor unit) (
For A), multiple indoor units (three in the drawing) 1-
This is a multi-type air conditioner in which (B), (B), . . . are connected in parallel.

The outdoor unit (A) includes a compressor (1) and two outdoor heat exchangers (2a) which are heat exchangers on the heat source side.

(2b), the high pressure gas line (31) of the refrigerant circuit (3) is connected to the discharge side of the compressor (1), and the low pressure gas line (32) is connected to the suction side. .

Further, the outdoor heat exchangers (2a) and (2b) are provided in parallel with the compressor (1), and the outdoor heat exchangers (2a).

One end of each (2b) is a four-way switching valve (21a).

Gas pipes (22a) with (21b), (22b)
are switchably connected to the high pressure gas line (31) and the low pressure gas line (32) via a refrigerant circuit (3) at the other end of each outdoor heat exchanger (2a), (2b).
The liquid pipe (33a) of the liquid line (33) in (3
3b) is connected. Then, each of the above four-way switching valves (
21a), (21b) are each outdoor heat exchanger (2a)
, (2b) function as a condenser, the regas pipes (22a) and (22b) are connected to the high-pressure gas line (31), and conversely, each outdoor heat exchanger (2a) is switched to the solid line in the figure.
, (2b) function as an evaporator, the regas pipes (22a) and (22b) are switched to the broken lines in the figure and are configured to communicate with the low pressure gas line (32).

In addition, 1 of the four-way switching valves (21a) and (21b)
The two boats are capillary (23a), (23b)
A gas pipe (22a) between the four-way switching valve (21a), (21b) and the low-pressure gas line (32) via a connecting pipe (24a), (24b) provided with.

(22b).

Furthermore, a gas pipe (22a) is connected to the high pressure gas line (31).
), one-way valve (4) downstream from the connection part of (22b).
), but the low pressure gas line (32) has a gas pipe (22a),
The accumulator (41) is located downstream from the connection part (22b).
) are respectively interposed, and both gas lines (31)
, (32) is connected with a pressure equalizing bypass path (42). The pressure equalization bypass path (42) has an on-off valve (4
2a) and a flow rate adjustment capillary (42b), one end of which is connected to the gas pipe (2a) in the high pressure gas line (31).
2a), (22b) and the compressor (1), the other end of which is the low pressure gas line (32).
2a), (22b) and the accumulator (4)
1).

In addition, each liquid pipe (33a) in the liquid line (33)
, (33b) are connected to a liquid receiver (6) to merge the liquid refrigerant, and the main liquid pipe (33c) of the liquid line (33) is connected to the liquid receiver (6). Furthermore, outdoor electric expansion valves (25&>, (25b), which are heat source side pressure reduction mechanisms, are installed in each of the liquid pipes (33a), (33b), and the outdoor electric expansion valves (25a), (25b) ) is configured to reduce the pressure of the liquid refrigerant when the outdoor heat exchangers (2g) and (2b) function as evaporators, and to adjust the flow rate of the liquid refrigerant when they function as condensers.

In addition, (26) is the outdoor heat exchanger (2a), (2b)
(43) is an inlet heat exchanger formed between the low pressure gas line (32) and the main liquid pipe (33c).

On the other hand, the high-pressure gas line (31), low-pressure gas line (32), and main liquid pipe (33) are arranged to extend toward the indoor side, and the flow dividers (31a), (32a), and (
high pressure branch pipe (31b), (31b
), ..., low pressure branch pipe (32b), (32b),
, , and liquid branch pipe (33e).

(33e), ..., and the multi-branched pipe (31b)
(32b) and (33e) are each indoor unit (B) (
B) is connected to...

The indoor units (B), (B), ... have the same configuration, and include an indoor heat exchanger (5) which is a user-side heat exchanger.
and an indoor electric expansion valve (51) which is a user-side pressure reduction mechanism. The indoor electric expansion valve (51) is interposed in the liquid branch pipe (33e), and the liquid branch pipe (33e)
is connected to one end of the indoor heat exchanger (5), and the other end of the indoor heat exchanger (5) is connected to the high pressure branch pipe (31b) and the low pressure branch pipe (32b) via the gas pipe (5a). It is connected to the. An on-off valve (52) is provided at each end of the high-pressure branch pipe (3lb) and the low-pressure branch pipe (32b).

(53) is interposed, and the indoor heat exchanger (5) is connected to the high pressure gas line (
31) and a low pressure gas line (32), and when the indoor heat exchanger (5) functions as an evaporator (during cooling), the low pressure side on-off valve (53) High pressure side on-off valve (52) when functioning as a condenser (during heating)
are designed to open and move individually.

Further, a low pressure bypass path (54) is connected to the liquid branch pipe (33e) of the indoor unit (B), and the low pressure bypass path (54) is connected to the on-off valve (5) in the low pressure branch pipe (32b).
3), a bypass valve (54a) and a capillary (54b) are interposed therein, and a liquid branch pipe (3) is connected to the downstream side of the liquid branch pipe (3).
A piping heat exchanger (54c) is formed between the indoor heat exchanger (54) and the indoor heat exchanger (54), and is configured to prevent flash of liquid refrigerant flowing out from the indoor heat exchanger (5) during heating. Further, a high pressure bypass path (55) is connected to the upstream side of the on-off valve (52) in the high pressure branch pipe (31b), and the high pressure bypass path (55) is connected to the gas pipe (5a),
It is equipped with a capillary (55a) for flow rate adjustment, and is configured to bypass condensate that collects in the high-pressure branch pipe (31b) and the like during cooling. Then, each on-off valve (5
2) (53) and both bypass roads (54), (55)
are integrally stored in the kit (56), while the compressor (1), outdoor heat exchanger (2a), (2b), indoor heat exchanger (5), (5),... are high pressure gas line (31), low pressure gas line (32) and liquid line (
33) to constitute the refrigerant circuit (3).

Note that (57) is an indoor fan placed close to the indoor heat exchanger (5).

Furthermore, various sensors are arranged in the refrigerant circuit (3), (Thl) is a liquid temperature sensor that detects the temperature of the liquid refrigerant of the indoor unit (B), and (Th2) is a liquid temperature sensor that detects the temperature of the liquid refrigerant of the indoor unit (B).
(Th3) is a room temperature sensor that detects the temperature of the intake air of the indoor fan (57), (Th4) is the outdoor heat exchanger (2a), (2
b) Liquid temperature sensor that detects the liquid refrigerant temperature on the side (T h5
) is an outside air temperature sensor that detects the discharge gas refrigerant temperature on the outdoor side heat exchanger (2a) and (2b) side, (The) is an outside air temperature sensor that is an outside air temperature detection means that detects the outside air temperature,
(T h7) is a discharge outside temperature sensor that detects the discharge gas refrigerant temperature of the compressor (1), (HPS) is a high pressure sensor that detects the discharge gas refrigerant pressure of the compressor (1), (LPS)
is a low-pressure pressure sensor that detects the suction gas refrigerant pressure of the compressor (1).

Further, a hot gas bypass line (44) is connected to the refrigerant circuit (3). The hot gas bypass line (44) has one end connected to the downstream side of the one-way valve (4) in the high pressure gas line (31) which is the discharge side of the compressor (1), and the other end connected to the liquid receiver (6). It is configured to be connected and to guide so-called hot gas, which is a high-pressure gas refrigerant, to the liquid receiver (6). The hot gas bypass line (44) is provided with a hot gas on-off valve (44a) and a capillary (44b) for adjusting the flow rate of hot gas. The hot gas on-off valve (44a) is configured to operate the outside temperature sensor (T) during cooling operation of the indoor unit (B).
When the outside air temperature detected by he) becomes below a preset temperature, it is configured to open in response to a control signal from the controller (7).

Next, the liquid receiver (6), which is a feature of the present invention, will be explained.

As shown in FIGS. 1 and 2, the liquid receiver (6) has two first liquid refrigerant pipes (62), which are inflow pipes, in a main body (61).
, (62) and one second liquid refrigerant pipe (62) which is an outflow pipe.
3) is connected to one hot gas pipe (64), and a baffle plate (65) is provided within the main body (61).

The main body (61) is formed into a vertical dome with an inverted cup-shaped lid (6lb) attached to the upper end of the cylindrical body (61a) and a cup-shaped floor body (61c) attached to the lower end, A support member (61d) is attached to the lower surface of the floor body (61c).

The liquid refrigerant pipes (62), (63) and the hot gas pipe (64) have outer vertical parts (62a), (63a), (
64a) to the central horizontal part (62b).

(63b), (64b) and inner vertical part (62c) (6
3c) and (64c) are formed by bending in order, and the central horizontal portions (62b) and (63b).

(64b) is attached to the main body (61) by penetrating the lower part of the body (61a) both inside and outside. Then, the inner vertical portions (62c), (63c), (
64c) is the central horizontal portion (62b).

(63b) and (64b) extend downward into the main body (61), the lower end opening is located near the floor (61c), and is constantly immersed in the liquid refrigerant stored in the main body (61). It is formed like this. On the other hand, the outer vertical portion (62
a), (63a), (64a) are the central horizontal part (62
b), (63b) and (64b). Furthermore, each of the first liquid refrigerant pipes (62),
(62) is an outer vertical part (62a), and (62a) is each of the above-mentioned liquid pipes (33a).

(33b) is connected, liquid refrigerant is introduced into the main body (61) from the outdoor heat exchangers (2a) and (2b), and conversely, the outdoor heat exchanger ( 2a)
, (2b). Further, the second liquid refrigerant pipe (63) has a main liquid pipe (33c) connected to the outer vertical part (63a), and leads the liquid refrigerant from inside the main body (61) to the indoor heat exchanger (5). And, conversely,
It is configured to be introduced into the main body (61) from the indoor heat exchanger (5). Furthermore, the hot gas pipe (6
In 4), a hot gas bypass line (45) is connected to the outer vertical part (64a), and the high pressure gas refrigerant discharged from the compressor (1) is introduced into the main body (61) from the high pressure gas line (31). configured to be installed.

The baffle plate (65) is made of two plates (65a).

(65a) are attached in a cross shape, and the main body (
61) is fixed to the lower part of the inside. Furthermore, each of the above board materials (
65a), below and to the side of (65a) is the floor body (65a).
1c), and four compartments (66), (66), . is formed. The two compartments (66) each have an inner vertical portion (62c) in the first liquid refrigerant pipe (62).
The other compartment (66) has a lower end opening of the inner vertical part (63c) of the second liquid refrigerant pipe (63), and the other compartment (66) has a lower end opening of the inner vertical part (63c). The lower end openings of the inner vertical portions (64c) of the gas pipes (64) are located respectively.

Next, the air conditioning operation of this air conditioner (1) will be explained.

First, when operating each indoor unit (B), (B), etc. for cooling, both four-way switching valves (
21a) and (21b) to the solid lines in Figure 3, and connect the gas pipes (22a) and (22b) to the high pressure gas line (31
), while each indoor unit (B), (B),
... closes the high-pressure side on-off valve (52) and closes the low-pressure side on-off valve (
53) and connect the gas pipe (5a) to the low pressure branch pipe (32b).
communicate with. In this state, the high-pressure gas refrigerant discharged from the compressor (1) is transferred to each of the outdoor heat exchangers (2g) and (2g).
b) and condenses, and this condensed liquid refrigerant flows into the liquid line (
33) to each indoor unit (B), (B), ・
..., indoor electric expansion valves (51), (51), ...
・After expansion, each indoor heat exchanger (5), (5)
, . . . and flow through the low pressure gas line (32) to return to the compressor (1).

On the other hand, each of the above indoor units (B), (B),...
When performing heating operation, the refrigerant flows in the opposite direction to that during cooling, and the refrigerant flows through the four-way selector valve (21a) of the outdoor unit (A).

(21b) is changed to the broken line in Figure 3, and each indoor uni-soto (
B), (B),..., the high pressure side on-off valve (5
2) is opened and the low-pressure side on-off valve (53) is closed, the refrigerant is condensed from the high-pressure gas line (31) in the indoor heat exchanger (5), flows through the liquid line (33), and passes through the outdoor electric expansion valve ( 25a)
, (25b) and expands in the outdoor heat exchanger (2a),
It will be evaporated at step (2b) and returned to the compressor (1).

During the cooling operation, for example, the double opening/closing valve (52) in one indoor unit (B).

(53) for heating operation, or conversely, during the above-mentioned full heating operation, for example, by switching both on-off valves (52) and (53) in one indoor unit (B) for cooling operation, so-called Simultaneous cooling and heating operation is performed. At that time, for example,
All indoor units (B).

(B) When two of the units perform heating operation and one unit performs cooling operation, the indoor unit (B) is in heating operation.

The liquid refrigerant flowing out from (B) joins at the flow divider (33d) of the liquid line (33), and then flows through the indoor unit (B) for cooling operation.
), evaporates and returns to the compressor (1) via the low pressure gas line (32).

During this simultaneous heating and cooling operation, two outdoor heat exchangers (
2a) and (2b) operate as an evaporator or a condenser depending on the indoor load, and furthermore, one unit is operated and the other unit is stopped.

In addition, the high pressure gas refrigerant pressure (high pressure) of the compressor (1) is detected by a high pressure sensor (HPS), and when this high pressure decreases, for example, the outdoor heat exchanger (2a
), (2b) is the condenser. If the outside air temperature is low during cooling operation, the outdoor electric expansion valve (25a), (
25b) is made small and the high pressure is increased. And this outdoor electric expansion valve (25a), (25
By reducing the opening degree of b), the liquid refrigerant pressure will decrease, but the outside air temperature will be measured by the outside air temperature sensor (T
he), and when the temperature drops below a predetermined value, the hot gas on/off valve (44) is activated by a signal from the controller (7).
a) is opened, hot gas (high-pressure gas refrigerant) is guided from the high-pressure gas line (31) to the liquid receiver (6), and the liquid refrigerant pressure is maintained at a predetermined value.

In the liquid receiver (6) described above, for example, when the outdoor heat exchangers (2a) and (2b) act as condensers, the liquid refrigerant is supplied from the outdoor heat exchangers (2a) and (2b) to each of the outdoor heat exchangers (2a) and (2b). The liquid refrigerant flows through the liquid pipes (33a) and (33b), and flows through the first liquid refrigerant pipe (6
2), the liquid refrigerant flows into the main body (61) through (62) and is stored in the main body (61), and the gas refrigerant is stored above the liquid refrigerant. Then, the main body (6
The liquid refrigerant in 1) flows out through the second liquid refrigerant pipe (63) and flows through the main liquid pipe (33c) to each indoor heat exchanger (5), (5), ... . On the other hand, the hot gas flows into the main body (61) through the hot gas pipe (64), and at this time, the lower end opening of the inner vertical part (64C) is located in the liquid refrigerant, and is ejected into the liquid refrigerant. The hot gas moves upward in the liquid refrigerant in the form of bubbles, and during the movement, the hot gas and the liquid refrigerant exchange heat and a portion of the hot gas condenses. Also,
The hot gas ejected into the liquid refrigerant flows into one compartment (6
6), the first and second liquid refrigerant pipes (62), (
63), and the second liquid refrigerant pipe (63) does not flow directly into the second liquid refrigerant pipe (63).
Only liquid refrigerant will flow out from 3).

In addition, if frost occurs in both the outdoor heat exchangers (2a) and (2b), the compartment outer heat exchanger (2a)
), (2b) is operated as a condenser and the other as an evaporator to perform defrost operation. In other words, all the indoor electric expansion valves (51), (51), etc. are closed, and the high-pressure gas refrigerant is flowed from the high-pressure gas line (31) to one of the outdoor heat exchangers (2a) or (2b) and condensed. The condensed liquid refrigerant is transferred from the liquid receiver (6) to the other liquid pipe (
33b) or (33a), and the outdoor electric expansion valve (25
After being expanded in b) or (25a), it is evaporated in the other outdoor heat exchanger (2b) or (2a) and returned to the compressor (1) via the low pressure gas line (32).

This operation is performed alternately in both the outdoor heat exchangers (2a) and (2b), and the compartment outer heat exchanger (2a).

(2b) defrosting will be performed. According to this defrost operation, indoor units (B), (B)...
Cold draft does not occur in the room, and there is no need to stop the indoor fan (57).

Therefore, since the inner end opening of the hot gas pipe (64) is located in the liquid refrigerant in the receiver body (61), the hot gas introduced from the hot gas pipe (64) directly presses the liquid refrigerant. Therefore, the liquid refrigerant is not pushed out from the main body (61), and only the liquid refrigerant flows into the first or second liquid refrigerant pipe (62).

(63) to prevent the generation of flash gas from flowing out,
Unbalanced current can be reliably prevented. In addition, since the hot gas is ejected into the liquid refrigerant, the heat exchange area between the hot gas and the liquid refrigerant can be increased compared to the conventional method, which makes it easier for the hot gas to condense and generate flash gas. can be reliably prevented.

Also, a baffle plate (65) is installed between the openings of the hot gas pipe (64) and the first and second liquid refrigerant pipes (62), (6B).
Because of the provision of the hot gas first and second liquid refrigerant pipes (
62) and (63), the generation of flash gas can be more reliably prevented.

In addition, by introducing the hot gas into the liquid receiver (6), it is possible to maintain the liquid refrigerant pressure at a predetermined value, and at the same time, it is possible to prevent the generation of flash gas, thereby ensuring that the refrigerating capacity does not decrease. can be prevented.

In this example, two outdoor heat exchangers (2a)
, (2b) is provided, however, the present invention may have one outdoor heat exchanger, and the present invention is not limited to the air conditioner of the embodiment, but is applicable only to cooling devices. It may be an air conditioner.

Furthermore, the baffle plate (65) is not limited to the embodiment, and may be the first or second liquid refrigerant pipe (62) through which the liquid refrigerant flows out.

(63) and the hot gas pipe (64) at least.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a partially sectional side view showing a liquid receiver, and FIG. 2 is a sectional view taken along line 1--2 in FIG. FIG. 3 is a refrigerant circuit diagram of an air conditioner equipped with a liquid receiver. (1)...Compressor (2a), (2b)...Outdoor heat exchanger (3)
... Refrigerant circuit (5) ... Indoor heat exchanger (6) ... Liquid receiver (33) ... Liquid line (44) ... Hot gas bypass line (51) ...
・Indoor electric expansion valve (A)...Outdoor unit (B)...Indoor unit (61)...Main body (62) (63) (64) (65)...First liquid refrigerant pipe (inflow pipe)...Second liquid refrigerant pipe (outflow pipe)...Hot gas pipe...2 baffle board idiots (1)...Compressor (2g), (2b)...Outdoor heat exchanger ( 3)...
- Reagent circuit (5)... Indoor heat exchanger (6)... Receiver (33)... Liquid line (44)... Hot gas bypass line (51)...
Indoor electric expansion valve (A), outdoor unit (B)...indoor unit (61)...main body (62)...first branch refrigerant pipe (inflow pipe) (63)...second refrigerant pipe ( Outflow pipe) (64) Hot gas pipe (65)...Baffle plate 61 (Fig.

Claims (3)

[Claims] (1) Inflow pipe (62) that introduces liquid refrigerant into the main body (61)
), and an outflow pipe (63) that leads out the liquid refrigerant in the main body (61).
) and a hot gas pipe (64) for introducing hot gas into the main body (61) are respectively attached to the main body (61), and the inner end opening of the outflow pipe (63) is located at the lower part of the main body (61). While the above hot gas pipe is formed to be located (
A liquid receiver characterized in that an inner end of the liquid receiver (64) is extended to a lower part within the main body (61) so that the inner end opening is located in the liquid refrigerant. (2) In the liquid receiver according to claim (1), the main body (61
) is characterized in that a baffle plate (65) is provided at the lower part of the inside, located between at least the inner end opening of the outflow pipe (63) and the inner end opening of the hot gas pipe (64). Receiver. (3) A compressor (1), a heat source side heat exchanger (2a), and a plurality of user side heat exchangers (5), (5) each having a user side decompression mechanism (51) and installed in parallel. ,..., and both heat exchangers (2a) and (5) in the refrigerant circuit (3).
The liquid receiver (6) according to claim (1) or (2), which is interposed between the liquid line (33) between the heat source side heat exchanger and the branch part for the utilization side heat exchanger (5). ), and a bypass line (44) with one end connected to the discharge side of the compressor (1) and the other end connected to the hot gas pipe (64) of the liquid receiver (6), through which hot gas can freely flow. An air conditioner equipped with a liquid receiver.