JP5110139B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner including a heat storage tank that stores a heat storage material that stores heat generated by a compressor, and a heat storage heat exchanger that exchanges heat with the heat storage material.

  Conventionally, when the outdoor heat exchanger is frosted during the heating operation by the heat pump air conditioner, defrosting is performed by switching the four-way valve from the heating cycle to the cooling cycle. In this defrosting method, although the indoor fan is stopped, there is a disadvantage that a feeling of heating is lost because cold air is gradually discharged from the indoor unit.

  Accordingly, a heat storage device is provided in the compressor provided in the outdoor unit, and the one that is defrosted using the waste heat of the compressor stored in the heat storage tank during the heating operation has been proposed (for example, Patent Document 1).

  FIG. 16 shows an example of a refrigeration cycle apparatus that employs such a defrosting method. The compressor 100, the four-way valve 102, the outdoor heat exchanger 104, the capillary tube 106, and the indoor unit provided in the outdoor unit. Is connected to the indoor heat exchanger 108 provided by the refrigerant pipe, the first bypass circuit 110 for bypassing the capillary tube 106, and the discharge side of the compressor 100 to the indoor heat exchanger 108 via the four-way valve 102. A second bypass circuit 112 is provided in which one end is connected to the connecting pipe and the other end is connected to the pipe extending from the capillary tube 106 to the outdoor heat exchanger 104. The first bypass circuit 110 is provided with a two-way valve 114, a check valve 116, and a heat storage heat exchanger 118, and the second bypass circuit 112 is provided with a two-way valve 120 and a check valve 122. Yes.

  Further, a heat storage tank 124 is provided around the compressor 100, and the heat storage tank 124 is filled with a heat storage material 126 for exchanging heat with the heat storage heat exchanger 118. The heat storage tank 124 is configured to cover the outer peripheral surface of the compressor 100.

  In this refrigeration cycle, during the defrosting operation, the two two-way valves 114 and 120 are opened, a part of the refrigerant discharged from the compressor 100 flows to the second bypass circuit 112, and the remaining refrigerant is the four-way valve 102. And flows to the indoor heat exchanger 108. In addition, after the refrigerant flowing through the indoor heat exchanger 108 is used for heating, a small amount of refrigerant flows to the outdoor heat exchanger 104 through the capillary tube 106, while the remaining most of the refrigerant passes through the first bypass circuit. 110 flows into the heat storage heat exchanger 118 through the two-way valve 114, takes heat from the heat storage material 126, passes through the check valve 116, and then merges with the refrigerant that has passed through the capillary tube 106 to the outdoor. It flows to the heat exchanger 104. After that, it merges with the refrigerant flowing through the second bypass circuit 112 at the inlet of the outdoor heat exchanger 104, performs defrosting using the heat of the refrigerant, passes through the four-way valve 102, and then enters the compressor 100. Inhaled.

  In this refrigeration cycle apparatus, by providing the second bypass circuit 112, the hot gas discharged from the compressor 100 during defrosting is guided to the outdoor heat exchanger 104 and the pressure of the refrigerant flowing into the outdoor heat exchanger 104 Therefore, the defrosting ability can be increased, and the defrosting can be completed in a very short time.

JP-A-3-31666

  However, the air conditioner described in Patent Document 1 requires a complicated refrigeration cycle including the heat storage tank 124, the first bypass circuit 110, the second bypass circuit 112, and the like, so that the number of components increases and the compressor chamber is configured. There is a possibility that the gap between parts such as partition plates and pipes to be narrowed, and the compressor 100 and the heat storage tank 124 may move during transportation and the parts may collide with each other, causing the heat storage tank 124 to be damaged. Had.

  This invention solves the said conventional subject, and it aims at providing the air conditioner which can suppress the failure | damage of a thermal storage tank.

  In order to solve the above-mentioned conventional problems, the present invention is an air conditioner having a compressor for compressing a refrigerant and a heat storage tank for storing a heat storage material for storing heat generated by the compressor. Is configured to partially cover the outer peripheral surface of the compressor, and further includes a heat storage tank side coupling portion provided in the heat storage tank and a partition plate side coupling portion provided in the partition plate constituting the compressor chamber. Since the movement of the compressor and the heat storage tank is restricted at the time of transportation, etc., the contact and damage between components are suppressed.

  The air conditioner of the present invention can limit the movement of the compressor and the heat storage tank at the time of transportation or the like, and can suppress the breakage of the heat storage tank.

The figure which shows the structure of the air conditioner which concerns on this invention The schematic diagram which shows the operation | movement at the time of normal heating of the air conditioner of FIG. 1, and the flow of a refrigerant | coolant. The schematic diagram which shows the operation | movement at the time of defrosting and heating of the air conditioner of FIG. 1, and the flow of a refrigerant | coolant. Perspective view of compressor with heat storage tank assembled Front view of compressor with heat storage tank assembled Top view of compressor with heat storage tank assembled Side view of compressor with accumulator installed 4 is a perspective view of the heat storage tank shown in FIG. 4 with the compressor and the accumulator removed. 4 is a perspective view of the tension member shown in FIG. The perspective view of the cover body of the heat storage tank of the state which assembled | attached the heat storage heat exchanger Sectional drawing for demonstrating the attachment method of the thermal storage heat exchanger and the cover body of a thermal storage tank 10 is a perspective view of the positioning member of FIG. The perspective view which abbreviate | omitted some air conditioners in the state where the support band was assembled Perspective view of support band with protrusions Sectional view of lid of heat storage tank with guide Schematic diagram showing the configuration of a conventional air conditioner

  1st invention is an air conditioner which has the compressor which compresses a refrigerant | coolant, and the thermal storage tank which accommodates the thermal storage material which accumulate | stores the heat | fever which generate | occur | produced with the compressor, Comprising: A thermal storage tank is a compressor. The heat storage tank side coupling portion provided in the heat storage tank and the partition plate side coupling portion provided in the partition plate constituting the compressor chamber are provided with a certain margin. By fixing with the support band, movement of the compressor and the heat storage tank is restricted during transportation and the like, so that contact and damage between parts are suppressed.

  In the second invention, in particular, in the first invention, since the partition plate side coupling portion is positioned above the heat storage tank side coupling portion, the support band is not buffered with the heat storage tank, and the heat storage tank has a certain degree. Can create a margin of movement.

  In the third invention, particularly in the first or second invention, the assembly workability can be improved by providing the guide portion for guiding the support band in the vicinity of the heat storage tank side coupling portion.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a configuration of an air conditioner including a heat storage device according to the present invention, and the air conditioner is composed of an outdoor unit 2 and an indoor unit 4 that are connected to each other through a refrigerant pipe.

  As shown in FIG. 1, a compressor 6, a four-way valve 8, a strainer 10, an expansion valve 12, and an outdoor heat exchanger 14 are provided inside the outdoor unit 2. A heat exchanger 16 is provided, and these are connected to each other via a refrigerant pipe to constitute a refrigeration cycle.

  More specifically, the compressor 6 and the indoor heat exchanger 16 are connected via a refrigerant pipe 18 provided with the four-way valve 8, and the indoor heat exchanger 16 and the expansion valve 12 are refrigerant provided with the strainer 10. It is connected via a pipe 20. The expansion valve 12 and the outdoor heat exchanger 14 are connected via a refrigerant pipe 22, and the outdoor heat exchanger 14 and the compressor 6 are connected via a refrigerant pipe 24.

  A four-way valve 8 is disposed in the middle of the refrigerant pipe 24, and an accumulator 26 for separating the liquid-phase refrigerant and the gas-phase refrigerant is provided in the refrigerant pipe 24 on the refrigerant suction side of the compressor 6. . The compressor 6 and the refrigerant pipe 22 are connected via a refrigerant pipe 28, and a first electromagnetic valve 30 is provided in the refrigerant pipe 28.

  Further, a heat storage tank 32 is provided around the compressor 6, and a heat storage heat exchanger 34 is provided inside the heat storage tank 32, and a heat storage material for exchanging heat with the heat storage heat exchanger 34 (for example, An ethylene glycol aqueous solution) 36 is filled, and the heat storage tank 32, the heat storage heat exchanger 34, and the heat storage material 36 constitute a heat storage device.

  The refrigerant pipe 20 and the heat storage heat exchanger 34 are connected via a refrigerant pipe 38, and the heat storage heat exchanger 34 and the refrigerant pipe 24 are connected via a refrigerant pipe 40, and the refrigerant pipe 38 has a second electromagnetic wave. A valve 42 is provided.

  In addition to the indoor heat exchanger 16, an air blower fan (not shown), upper and lower blades (not shown), and left and right blades (not shown) are provided inside the indoor unit 4, and indoor heat exchange is performed. The unit 16 exchanges heat between the indoor air sucked into the interior of the indoor unit 4 by the blower fan and the refrigerant flowing through the interior of the indoor heat exchanger 16, and blows out the air warmed by heat exchange into the room during heating. On the other hand, air cooled by heat exchange is blown into the room during cooling. The upper and lower blades change the direction of air blown from the indoor unit 4 up and down as necessary, and the left and right blades change the direction of air blown from the indoor unit 4 to right and left as needed.

  The compressor 6, the blower fan, the upper and lower blades, the left and right blades, the four-way valve 8, the expansion valve 12, the electromagnetic valves 30 and 42, etc. are electrically connected to a control device (not shown, for example, a microcomputer). Be controlled.

  In the air conditioner according to the present invention having the above-described configuration, the mutual connection relationship and function of each component will be described together with the flow of the refrigerant, taking the heating operation as an example.

  The refrigerant discharged from the discharge port of the compressor 6 reaches the indoor heat exchanger 16 from the four-way valve 8 through the refrigerant pipe 18. The refrigerant condensed by exchanging heat with the indoor air in the indoor heat exchanger 16 passes through the refrigerant pipe 20 through the indoor heat exchanger 16, passes through the strainer 10 that prevents foreign matter from entering the expansion valve 12, and then the expansion valve. To 12. The refrigerant decompressed by the expansion valve 12 reaches the outdoor heat exchanger 14 through the refrigerant pipe 22, and the refrigerant evaporated by exchanging heat with the outdoor air in the outdoor heat exchanger 14 is the refrigerant pipe 24, the four-way valve 8, and the accumulator. 26 and returns to the suction port of the compressor 6.

  In addition, the refrigerant pipe 28 branched from between the compressor 6 discharge port of the refrigerant pipe 18 and the four-way valve 8 joins between the expansion valve 12 of the refrigerant pipe 22 and the outdoor heat exchanger 14 via the first electromagnetic valve 30. doing.

  Furthermore, although the heat storage tank 32 which accommodated the heat storage material 36 and the heat storage heat exchanger 34 in the inside is mentioned later for details, it arrange | positions so that it may contact and cover the compressor 6, and the heat storage material 36 The refrigerant pipe 38 that is stored in the refrigerant pipe 20 and branched from the refrigerant pipe 20 between the indoor heat exchanger 16 and the strainer 10 reaches the inlet of the heat storage heat exchanger 34 via the second electromagnetic valve 42, and the heat storage heat exchanger 34. The refrigerant pipe 40 exiting from the outlet merges between the four-way valve 8 and the accumulator 26 in the refrigerant pipe 24.

  Next, the operation during normal heating will be described with reference to FIG. 2 schematically showing the operation during normal heating and the flow of the refrigerant of the air conditioner shown in FIG.

  During the normal heating operation, the first electromagnetic valve 30 and the second electromagnetic valve 42 are controlled to be closed, and the refrigerant discharged from the discharge port of the compressor 6 as described above passes through the refrigerant pipe 18 from the four-way valve 8. It reaches the indoor heat exchanger 16. The refrigerant condensed by exchanging heat with the indoor air in the indoor heat exchanger 16 exits the indoor heat exchanger 16 and reaches the expansion valve 12 through the refrigerant pipe 20. The refrigerant decompressed by the expansion valve 12 is refrigerant pipe 22. Through the outdoor heat exchanger 14. The refrigerant evaporated by exchanging heat with outdoor air in the outdoor heat exchanger 14 returns from the four-way valve 8 to the suction port of the compressor 6 through the refrigerant pipe 24.

  Further, the heat generated in the compressor 6 is accumulated in the heat storage material 36 housed in the heat storage tank 32 from the outer wall of the compressor 6 through the outer wall of the heat storage tank 32.

  Next, the operation during defrosting / heating will be described with reference to FIG. 3 schematically showing the operation of the air conditioner shown in FIG. 1 during defrosting / heating and the flow of refrigerant. In the figure, the solid line arrows indicate the flow of the refrigerant used for heating, and the broken line arrows indicate the flow of the refrigerant used for defrosting.

  When the outdoor heat exchanger 14 is frosted during the above-described normal heating operation and the frosted frost grows, the ventilation resistance of the outdoor heat exchanger 14 increases and the air flow decreases, and the evaporation in the outdoor heat exchanger 14 increases. The temperature drops. As shown in FIG. 3, the air conditioner according to the present invention is provided with a temperature sensor 44 that detects the piping temperature of the outdoor heat exchanger 14, and the evaporation temperature is lower than that during non-frosting. When this is detected by the temperature sensor 44, an instruction from the normal heating operation to the defrosting / heating operation is output from the control device.

When the normal heating operation is shifted to the defrosting / heating operation, the first electromagnetic valve 30 and the second electromagnetic valve 42 are controlled to open, and in addition to the refrigerant flow during the normal heating operation described above, the first solenoid valve 30 and the second electromagnetic valve 42 are discharged from the discharge port of the compressor 6. A part of the vapor phase refrigerant passes through the refrigerant pipe 28 and the first solenoid valve 30 and merges with the refrigerant passing through the refrigerant pipe 22, heats the outdoor heat exchanger 14, condenses into a liquid phase, It returns to the suction port of the compressor 6 through the pipe 24 via the four-way valve 8 and the accumulator 26.

  In addition, a part of the liquid-phase refrigerant that is divided between the indoor heat exchanger 16 and the strainer 10 in the refrigerant pipe 20 passes through the refrigerant pipe 38 and the second electromagnetic valve 42, and absorbs heat from the heat storage material 36 in the heat storage heat exchanger 34. Then, it evaporates and vaporizes, merges with the refrigerant passing through the refrigerant pipe 24 through the refrigerant pipe 40, and returns from the accumulator 26 to the suction port of the compressor 6.

  The refrigerant returning to the accumulator 26 includes the liquid phase refrigerant returning from the outdoor heat exchanger 14. By mixing this with the high-temperature gas phase refrigerant returning from the heat storage heat exchanger 34, The evaporation of the phase refrigerant is promoted, and the liquid phase refrigerant does not return to the compressor 6 through the accumulator 26, so that the reliability of the compressor 6 can be improved.

  The temperature of the outdoor heat exchanger 14 that has become below freezing due to the attachment of frost at the start of defrosting and heating is heated by the gas-phase refrigerant discharged from the discharge port of the compressor 6, and the frost is melted near zero degrees. When melting is finished, the temperature of the outdoor heat exchanger 14 begins to rise again. When the temperature sensor 44 detects the temperature rise of the outdoor heat exchanger 14, it is determined that the defrosting has been completed, and the control device outputs an instruction from the defrosting / heating operation to the normal heating operation.

  In the air conditioner having the above-described configuration, a configuration in which the heat storage tank 32 is assembled to the compressor 6 will be described below with reference to the drawings.

  4 and 5 are a perspective view and a front view of the compressor 6 with the heat storage tank 32 assembled thereto. The heat storage tank 32 is filled with a liquid heat storage material 36, and the heat storage tank 32 houses a heat storage heat exchanger 34 in which a refrigerant flows.

  As shown in FIG. 4 and FIG. 5, the heat storage tank 32 includes a heat storage tank body 46 whose upper side is opened and a lid body 48 that closes the upper opening of the heat storage tank body 46. The heat storage tank 32 is made of resin. Although details of the configuration of the heat storage tank 32 will be described later, the size of the heat storage tank 32 of the present embodiment is different between the upper space and the lower space.

  Since the heat storage material 36 contained in the heat storage tank 32 is in a liquid state, the higher the temperature of the heat storage material 36 is, the higher the liquid is stored. Therefore, in the present embodiment, as shown in FIG. 4, a configuration in which a large amount of the high-temperature heat storage material 36 can be secured by increasing the upper space of the heat storage tank 32 and reducing the lower space near the lowermost portion. It is said. If the heat storage tank 32 is made of a metal member, it is difficult to create a complicated shape of the heat storage tank 32 as shown in FIG. A heat storage tank 32 having a simple shape can be created.

  Furthermore, by using a resin material as the material of the heat storage tank 32, not only cost can be reduced, but also weight reduction can be realized. In particular, since it is mounted on an outdoor unit that is a heavy object, the heat storage tank 32 can be further reduced in weight, and an increase in the weight of the outdoor unit can be suppressed as much as possible, thereby improving installation and workability.

  FIG. 6 is a top view of the compressor 6 with the heat storage tank 32 assembled as viewed from above. As shown in FIG. 6, the outer peripheral surface 6 a of the compressor 6 is partially covered in the circumferential direction by a portion between one end 46 a and the other end 46 b of the heat storage tank main body 46 configured in a substantially U shape. It is configured.

Specifically, the compressor 6 is disposed on the inner peripheral side of the heat storage tank 32 configured in a substantially U shape, and from A to B along the outer peripheral surface of the compressor 6 as shown in FIG. The inner periphery of the heat storage tank 32 and the outer periphery of the compressor 6 are in contact. Further, the compressor 6 and the heat storage tank 32 are in contact with each other over about 180 degrees from A to B. Hereinafter, a specific contact structure between the heat storage tank 32 and the compressor 6 will be described.

  Before being fixed to the heat storage tank 32, the compressor 6 and the accumulator 26 are integrated as shown in FIG. 7, and are fixed by the band 6b. A heat transfer sheet 50 is in close contact with the outer peripheral surface 6 a of the compressor 6. The compressor 6 contacts the external surface 46c on the compressor side of the heat storage tank body 46 through the heat transfer sheet 50 (see FIG. 8).

  The heat transfer sheet 50 is an elastic sheet having self-adsorptive properties, and has a plurality of through holes 50a. The plurality of through-holes 50a are formed for extracting air between the heat transfer sheet 50 and the outer peripheral surface 6a of the compressor 6 to the outside. When air is released to the outside through the plurality of through holes 50 a, the contact area between the heat transfer sheet 50 and the outer peripheral surface 6 a of the compressor 6 is increased, and heat transfer between the heat transfer sheet 50 and the compressor 6 is performed. Improves.

  Note that the through holes 50a are spaced apart from each other at a predetermined interval (for example, 10 mm pitch), and even if bubbles are generated between the compressor 6 and the heat transfer sheet 50, the predetermined interval (in this embodiment) It is not limited to a pitch of 10 mm, and no large bubbles are formed. Further, the predetermined interval is not limited to a 10 mm pitch as in the present embodiment. For example, even if the pitch is about 1 mm to 30 mm, the size of the bubbles is limited. Can be prevented.

  On the other hand, as shown in FIG. 8, a plurality of grooves 46 d are formed in the portion of the external surface 46 c on the compressor side of the heat storage tank body 46 that contacts the heat transfer sheet 50. The plurality of grooves 46d are formed to draw air between the heat transfer sheet 50 and the heat storage tank body 46 to the outside. Further, the plurality of grooves 46d serve to draw out air that has moved between the heat transfer sheet 50 and the compressor 6 via the through hole 50a between the heat transfer sheet 50 and the heat storage tank 32. The plurality of grooves 46d have such a length that they are not completely covered by the heat transfer sheet 50 so that the air can be extracted outside when the heat transfer sheet 50 comes into close contact with the heat storage tank body 46. Yes. Further, the plurality of grooves 46d have a width and a depth that are not filled with the elastic heat transfer sheet 50. For example, the width is determined to be 1 mm and the depth is determined to be 0.5 mm.

  The grooves 46d are spaced apart from each other at a predetermined interval (for example, a pitch of 10 mm), and limit the size of bubbles generated between the heat transfer sheet 50 and the heat storage tank body 46. Further, like the through holes 50a, the pitch is not limited to 10 mm. For example, even if the pitch is 1 mm to 30 mm, the size of the bubbles is limited to the pitch interval, so that the inclusion of large bubbles is prevented. There is an effect.

  In this way, when the through holes 50a are provided in the heat transfer sheet 50 at predetermined intervals, and the grooves 46d are provided at predetermined intervals on the inner peripheral surface of the heat storage tank 32, the compressor 6 and the heat storage tank 32 are brought into close contact with each other. The generated bubbles can be released to the outside, and the waste heat from the compressor 6 can be effectively transmitted to the heat storage tank 32.

  In the present embodiment, the predetermined interval at which the through-hole 50a is provided and the predetermined interval at which the groove 46d is provided are the same, but the present invention is not limited to this, and there is no problem with different predetermined intervals.

  Next, the structure which fixes the heat storage tank 32 and the compressor 6 is demonstrated. The compressor 6 and the accumulator 26 shown in FIG. 7 are fixed to the heat storage tank 32 by two bands 52 and 54 as shown in FIGS.

  As shown in FIG. 6, the end of the heat storage tank main body 46 extends further to the accumulator 26 side than the points A and B in contact with the compressor 6. In order to increase the amount of the heat storage material as much as possible, it is not in direct contact with the compressor 6, but the volume of the high-temperature heat storage material 36 is increased to increase the time during which the heating operation can be performed while performing the defrosting operation. Yes.

  Moreover, the heat storage tank 32 of this Embodiment is comprised so that the circumference | surroundings of the compressor 6 only may be covered. If this is covered with the heat storage tank 32 including the accumulator 26, the temperature of the accumulator 26 is lower than that of the compressor 6. Therefore, when it is going to store the waste heat of the compressor 6 in the heat storage material 36 effectively, it is better to make the heat storage tank 32 cover the periphery of the compressor 6 alone.

  However, when trying to fix the heat storage tank 32 and the compressor 6 with a band, a certain tension is required. For this reason, the upper band 52 fixes the heat storage tank 32 and the accumulator 26, thereby enhancing the tightening force of the band 52 and consequently the adhesion between the heat storage tank 32 and the compressor 6.

  If the heat storage tank 32 and the compressor 6 are fixed with a band, the distance from both ends of the heat storage tank 32 to the point where the band 52 contacts the compressor is short, and the tension is weak. Therefore, in this Embodiment, the heat storage tank 32 and the accumulator 26 are being fixed with the band 52, As a result, the distance from the both ends of the heat storage tank 32 to the point which the band 52 touches the accumulator 26 can be taken long. Can keep the tension strong.

  On the other hand, since the place where the lower band 54 is fixed is a place where the accumulator 26 is not present, it is necessary to fix the heat storage tank 32 and the compressor 6 with the band 54. Therefore, a notch 46g is formed by cutting out a part near the lowermost part of the heat storage tank 32 in the circumferential direction of the compressor 6 to secure tension when the heat storage tank 32 and the compressor 6 are fixed by the band 54. Like to do. As a result, the distance from the both ends of the heat storage tank 32 to the point where the band 54 contacts the compressor 6 can be increased, and the tension can be kept strong.

  The band 52 which is the first band fixes the accumulator 26 and the heat storage tank main body 46. Specifically, each of one end 46a and the other end 46b of the heat storage tank main body 46 is provided with a band passing portion 46e having a hole through which the band 52 passes, and the band 52 has passed through the two band passing portions 46e. It is wound around the accumulator 26 in a state.

  As a result, the band 52 passing between the accumulator 26 and the compressor 6 that has passed through the two band passing portions 46e is configured to suppress a tension member 56, which will be described later, and the accumulator 26 (in the direction opposite to the compressor 6). The band 52 that passes through the outer peripheral surface attracts the accumulator 26 and the heat storage tank 32, and as a result, the adhesion between the compressor 6 and the heat storage tank 32 can be enhanced.

  A band 54 that is a second band fixes the compressor 6 and the heat storage tank main body 46. Specifically, the band 54 is wound along the outer surface 46f on the anti-compressor side of the heat storage tank body 46 as shown in FIG. 4, and along the outer peripheral surface 6a of the compressor 6 as shown in FIG. Is wound.

  Moreover, the heat storage tank 32 and the compressor are provided by providing notches 46g (parts moved to the back side in the circumferential direction from both upper ends of the heat storage tank 32) at both ends near the lowermost part of the heat storage tank 32. 6 can be improved.

Then, by tightening the band 52, the compressor 6 and the heat storage tank 32 are in close contact via the heat transfer sheet 50 via the accumulator 26. In addition, the compressor 6 and the heat storage tank 32 are in close contact with each other via the heat transfer sheet 50 by tightening the band 54. As a result, the air between the compressor 6 and the heat transfer sheet 50 and the air between the heat transfer sheet 50 and the heat storage tank 32 escape to the outside.

  Bands 52 and 54 are preferably bands made of a resin such as nylon having creep characteristics. Note that the “creep characteristic” in the present specification specifically means that the band tightening force is large during a predetermined period immediately after the tightening, and the tightening force decreases with the passage of time. And the characteristic which becomes the clamping force which maintains fixation with the heat storage tank 32.

  For example, the bands 52 and 54 exhibit a tightening force of about 25 kg (kilograms) immediately after tightening, thereby causing air between the compressor 6 and the heat transfer sheet 50 and between the heat transfer sheet 50 and the heat storage tank 32. Produced from a resin that can withdraw air and is stable with a clamping force of about 5 kg that eventually keeps the compressor 6 and the heat storage tank 32 fixed, with the clamping force decreasing over time. Band is preferred.

  This is because a certain tightening force is required when the compressor 6 and the heat storage tank 32 are brought into close contact with each other in the manufacturing process (in the above description, although it is about 25 kg, it is not limited to this). ). However, if this tightening force is maintained, a large tightening force will act on the heat storage tank 32 for a long time. Therefore, as the time passes, the tightening force becomes weaker, and finally the force that can maintain the close contact between the compressor 6 and the heat storage tank 32 (in the above, about 5 kg, but is not limited thereto) It is preferable to employ a material having a creep characteristic such that the durability of the heat storage tank 32 is not impaired.

  For reference, a band that does not have creep characteristics, such as a band made of stainless steel, may have the following problems.

  In the case of a band made of stainless steel, when tightened with such a large tightening force that the air between the compressor 6 and the heat transfer sheet 50 and the air between the heat transfer sheet 50 and the heat storage tank 32 come out. The tightening force is maintained as it is. When a large tightening force is maintained, when the heat storage tank 32 stores heat and becomes a high temperature state, that is, when the heat storage tank body 46 is softened by heat (particularly when the heat storage tank body 46 is made of resin). ), The heat storage tank body 46 may be deformed toward the compressor 6 side. And stress concentrates on the part of the thermal storage tank main body 46 which contacts the compressor 6, and the thermal storage tank main body 46 may be damaged. Alternatively, the lid body 48 may come off from the heat storage tank main body 46.

  On the contrary, when tightening with a small tightening force, the air between the compressor 6 and the heat transfer sheet 50 and the air between the heat transfer sheet 50 and the heat storage tank 32 do not escape sufficiently outside, The heat transferability from the compressor 6 to the heat storage tank 32 via the heat transfer sheet 50 is reduced. Accordingly, the bands 52 and 54 preferably have creep characteristics.

  However, the heat storage tank 32 fixed by the band 52 and the band 54 is in a state where a force is applied in a direction in which the one end 46 a and the other end 46 b of the heat storage tank 32 are close to each other due to the tension applied to the band 52 and the band 54. ing. Furthermore, since the heat storage tank 32 is made of a resin material, the heat storage tank 32 expands as the temperature rises, and the one end 46a and the other end 46b become closer to each other. As a result, as shown in FIG. Stress concentration occurs around the points A and B.

Therefore, in the present embodiment, the tension member 56 is provided in the heat storage tank 32 in order to suppress deformation of the heat storage tank 32 toward the compressor 6 side. As shown in FIG. 8 with the compressor 6 and the accumulator 26 removed, the tension member 56 is disposed so as to be interposed between the band-passing portions 46e of the one end 46a and the other end 46b of the heat storage tank main body 46. The

  Specifically, as shown in FIG. 9, the tension member 56 is a metallic plate member, and includes notches 56 a that engage with the band-passing portions 46 e of the heat storage tank main body 46 at both ends thereof. Further, the tension member 56 includes a contact surface 56b that is in surface contact with the band passing portion 46e in the direction in which the two band passing portions 46e face each other.

  Such a tension member 56 suppresses the approach of the two band-passing portions 46e by the contact surface 56b when the heat storage tank main body 46 tries to deform toward the compressor 6, that is, when the two band-passing portions 46e try to approach each other. can do. The tension member 56 suppresses the approach of the one end 46a and the other end 46b of the heat storage tank body 46 through the two band-passing portions 46e, and as a result, the deformation of the heat storage tank body 46 toward the compressor 6 is suppressed. The

  In addition, as shown in FIG. 4, the tension member 56 is prevented from dropping from the heat storage tank main body 46 by the band 52 that has passed through the band passing portion 46e. That is, the tension member 56 is disposed on the compressor 6 side with respect to the band 52 that has passed through the two band passing portions 46e.

  In particular, when the heat storage tank 32 becomes hot and expands, a force is applied in the direction in which the tension member 56 bends. Therefore, the band 52 and the mounting position of the tension member 56 are arranged at the same position (overlapping position) in the height direction, thereby suppressing the back side of the tension member 56 with the band 52 (see FIG. 6). ), The deflection of the tension member 56 can also be prevented, and as a result, deformation of the heat storage tank 32 is prevented and stress is prevented from being concentrated.

  FIG. 10 is a perspective view of the heat storage heat exchanger 34 accommodated in the heat storage tank 32 and the lid 48 of the heat storage tank 32.

  As shown in FIG. 10, the heat storage heat exchanger 34 is formed, for example, in a meandering manner such as a copper tube, and is supported by the lid body 48 of the heat storage tank 32 at both ends. Further, in order to effectively use the heat quantity of the heat storage material inside the heat storage tank 32, the heat storage heat exchanger 34 is meandered along the substantially U-shaped heat storage tank 32. One end of the heat storage heat exchanger 34 is connected to the refrigerant pipe 38, and the other end is connected to the refrigerant pipe 40 (see FIG. 1).

  Next, a method for fixing the heat storage heat exchanger 34 to the lid 48 will be described. The heat storage heat exchanger 34 is supported by the lid body 48 via a plug body 58 made of an elastic material resistant to the heat storage material 36. As shown in FIG. 11, both ends of the heat storage heat exchanger 34 are supported by passing through the through holes 58 a of the plug body 58 press-fitted into the through holes 48 a of the lid body 48.

  As shown in FIG. 10, a positioning member 60 that positions the heat storage heat exchanger 34 with respect to the heat storage tank body 46 is attached to the heat storage heat exchanger 34.

  The positioning member 60 is a member made of an elastic material resistant to the heat storage material 36, and is attached to a pipe portion located in the center of the lower part of the heat storage heat exchanger 34 (the bottom side of the heat storage tank 32). It is done. Specifically, as shown in FIG. 12, the positioning member 60 includes a through hole 60a through which a portion of the tube located at the lower center of the heat storage heat exchanger 34 passes, and the heat storage heat exchanger 34 in the through hole 60a. And a notch 60b for disposing a portion of the tube. The portion of the tube located at the lower center of the heat storage heat exchanger 34 is disposed in the through hole 60a by passing through the cut portion 60b.

  Further, the positioning member 60 engages with a convex engaging portion 46 h (see FIG. 8) formed on the inner surface of the heat storage tank body 46 when the heat storage heat exchanger 34 is accommodated in the heat storage tank 32. A concave engaging portion 60c is provided. With such a positioning member 60, the heat storage heat exchanger 34 is positioned with respect to the heat storage tank main body 46.

  Furthermore, as shown in FIG. 10, a plurality of buffer members 62 that avoid contact between the heat storage tank body 46 and the heat storage heat exchanger 34 are attached to a predetermined portion (details will be described later) of the heat storage heat exchanger 34. ing. Like the positioning member 60, the plurality of buffer members 62 are members made of an elastic material resistant to the heat storage material 36 and are attached to the heat storage heat exchanger 34 in the same manner as the positioning member 60. .

  The plug 58, the positioning member 60, and the buffer member 62 described so far suppress the generation of noise caused by the contact between the heat storage heat exchanger 34 and the heat storage tank 32.

  The cause of this noise generation will be specifically described. Consider a case where the positioning member 60 and the buffer member 62 do not exist and the heat storage heat exchanger 34 is fixed to the lid 48 of the heat storage tank 32 by a fixing means such as a bolt instead of the plug body 58. In this case, the heat storage heat exchanger 34 is firmly fixed to the lid 48 by a fixing means such as a bolt as compared with the plug 58 made of an elastic material. Accordingly, the heat storage heat exchanger 34 is likely to swing with the portion fixed to the lid 48 as a fixed end.

  Therefore, when the vibration of the compressor 6 is transmitted to the heat storage tank 32, the vibration is transmitted to the heat storage heat exchanger 34 via the lid 48. Then, the heat storage heat exchanger 34 swings and comes into contact with the inner surface of the heat storage tank body 46 to generate a collision sound as noise.

  In order to suppress such noise generation, the heat storage heat exchanger 34 is supported by the lid body 48 via a plug body 58 made of an elastic material. That is, the plug body 58 functions as a damper that attenuates vibration transmitted from the lid body 48 to the heat storage heat exchanger 34. Further, the positioning member 60 positions the lower part of the heat storage heat exchanger 34 with respect to the heat storage tank main body 46, so that the swing of the heat storage heat exchanger 34 is suppressed. Further, the plurality of buffer members 62 avoid contact between the heat storage heat exchanger 34 and the heat storage tank body 46.

  Further, as shown in FIG. 11, the refrigerant pipe of the heat storage heat exchanger 34 is attached to the lid body 48 via a plug body 58 made of an elastic material, and therefore the range allowed by the elastic material of the plug body 58. The heat storage heat exchanger 34 can be moved.

  In particular, in the manufacturing process of making the heat storage tank 32, the positioning member 60 is fitted into the convex engagement portion 46h protruding on the inner surface side of the heat storage tank body 46 to position the heat storage heat exchanger 34. It is necessary to put the heat storage heat exchanger 34, which is a heavy object, in the heat storage tank main body 46 and fit the positioning member 60 into the convex engagement portion 46h.

  However, in the present embodiment, since the plug body 58 is provided, the heat storage heat exchanger 34 is inserted into the heat storage tank main body 46 in order to give flexibility to the portion where the heat storage heat exchanger 34 is fixed to the lid body 48. After that, it becomes easy to fit the positioning member 60 into the convex engaging portion 46h, and the heat storage tank 32 can be easily manufactured.

Moreover, since the heat storage heat exchanger 34 is comprised with the copper pipe, when the heat storage heat exchanger 34 is inserted in the heat storage tank main body 46, the location which fixes the heat storage heat exchanger 34 and the cover body 48 is centered, It will tilt to the inner circumference. Therefore, by configuring the plug body 58 with an elastic material, the inclination of the heat storage heat exchanger 34 is absorbed, and a specific effect that stress concentration does not occur in the fixing portion between the heat storage heat exchanger 34 and the lid body 48. Also have.

  The plurality of buffer members 62 may come into contact with the inner surface of the heat storage tank body 46 after suppressing the oscillation of the heat storage heat exchanger 34 by using the plug body 58 and the positioning member 60. A heat storage heat exchanger 34 is attached.

  According to this embodiment, the heat storage tank 32 (heat storage tank main body 46) is configured to cover the outer peripheral surface 6a of the compressor 6 in the circumferential direction by a portion between the one end 46a and the other end 46b. In the case of the heat storage tank 32, the tension member 56 is disposed between the band-passing portions 46e provided at the one end 46a and the other end 46b of the heat storage tank 32 and suppresses the approach between the one end 46a and the other end 46b. Deformation to the compressor 6 side is suppressed. Thereby, damage to the heat storage tank 32 that may be caused by deformation of the heat storage tank 32 toward the compressor 6 can be suppressed.

  Moreover, in this Embodiment, as shown in FIG. 13, the thermal storage tank side coupling | bond part 63 which has a substantially U shape is provided in the cover body 48 of the thermal storage tank 32, On the other hand, the inside of the outdoor unit 2 is divided and a compressor room A partition plate 64 is provided, and a partition plate side coupling portion 65 is provided on the partition plate 64.

  And the movement of the thermal storage tank 32 is restrict | limited by fixing the thermal storage tank side coupling | bond part 63 and the partition plate side coupling | bond part 65 with the support band 66. FIG. However, when fixing with the support band 66, it is necessary to fix with a certain margin. If this is fixed to such an extent that the heat storage tank 32 cannot be moved, the heat storage tank 32 may be damaged. For this reason, the heat storage tank 32 is fixed with the support band 66 with a margin enough to give a certain movement.

  As a result, since the movement of the compressor 6 and the heat storage tank 32 can be restricted during transportation or the like, it is possible to suppress the hitting and breakage between components.

  In addition, when the fixed margin by the support band 66 is too small, if the margin is too small, vibrations from the compressor 6 and the heat storage tank 32 are propagated to the partition plate 64 to cause abnormal noise, and if the margin is too large. Since the movement of the compressor 6 and the heat storage tank 32 cannot be restricted and causes contact with each other or damage, it differs depending on the configuration of the air conditioner.

  Further, as shown in FIG. 13, the position of the partition plate side coupling portion 65 is set higher than the position of the heat storage tank side coupling portion 63. By arranging in this way, the heat storage tank 32 is not suppressed by the support band 66, and the heat storage tank 32 can be given a margin for movement. Temporarily, when the position of the partition plate side coupling | bond part 65 is made lower than the position of the thermal storage tank side coupling | bond part 63, it will hold down the thermal storage tank 32 with the support band 66, and there is no room for the thermal storage tank 32 to move. The vibration from the heat storage tank 32 is propagated to the partition plate 64 and causes abnormal noise.

  Further, as shown in FIG. 14, the support band 66 is provided with a protrusion 66 a so as to be fixed with a specified coupling length. In other words, since there is the protrusion 66a, it can be fixed at a predetermined length without depending on the person working in all models at the time of manufacture, so that there is no variation between products, and there is no variation at the time of manufacture by an individual. Can be eliminated.

  Furthermore, as shown in FIG. 15, by having a guide portion 67 for guiding the support band 66 in the vicinity and inside of the substantially U-shaped heat storage tank side coupling portion 63 provided in the lid 48 of the heat storage tank 32, Furthermore, assembly workability can be improved.

As described above, the present embodiment has been described using the configuration that is fixed with one band. However, the present invention is not limited to this, and there is no problem even if the configuration is fixed using a plurality of bands at a plurality of locations. Mutual contact and damage can be suppressed.

  Moreover, although the heat storage tank side coupling | bond part 63 was provided in the cover body 48 in this Embodiment, you may comprise by providing a coupling | bond part in the main body of the heat storage tank 32. FIG.

  The present invention is not limited to an air conditioner, and can be applied to, for example, a heat pump water heater as long as it adopts a refrigeration cycle that uses a heat storage tank configured to cover the outer peripheral surface of the compressor in the circumferential direction. It is.

DESCRIPTION OF SYMBOLS 2 Outdoor unit 4 Indoor unit 6 Compressor 6a Outer peripheral surface 6b Band 8 Four way valve 10 Strainer 12 Expansion valve 14 Outdoor heat exchanger 16 Indoor heat exchanger 18 Refrigerant piping 20 Refrigerant piping 22 Refrigerant piping 24 Refrigerant piping 26 Accumulator 28 Refrigerant piping 30 First solenoid valve 32 Thermal storage tank 34 Thermal storage heat exchanger 36 Thermal storage material 38 Refrigerant piping 40 Refrigerant piping 42 Second electromagnetic valve 44 Temperature sensor 46 Thermal storage tank body 46a One end 46b The other end 46c External surface 46d Groove 46e Band through portion 46f External surface 46g Notch 46h Convex engaging part 48 Lid 48a Through hole 50 Heat transfer sheet 50a Through hole 52 First band 54 Second band 56 Stretch member 56a Notch 56b Contact surface 58 Plug body 58a Through hole 60 Positioning member 60a Through hole 60b Notch 60c Jogakarigo unit 62 buffer member 63 heat storage tank-side coupling portion 64 partition plate 65 partitioning plate side coupling portion 66 supporting the band 66a protruding 67 guide portion

Claims (3)

An air conditioner having a compressor for compressing a refrigerant and a heat storage tank for storing a heat storage material for storing heat generated by the compressor, wherein the heat storage tank partially covers the outer peripheral surface of the compressor The heat storage tank side coupling portion provided in the heat storage tank and the partition plate side coupling portion provided in the partition plate constituting the compressor chamber are fixed with a support band with a certain margin. Air conditioner characterized by. The air conditioner according to claim 1, wherein the partition plate side coupling portion is positioned above the heat storage tank side coupling portion. The air conditioner according to claim 1 or 2, wherein a guide portion for guiding the support band is provided in the vicinity of the heat storage tank side coupling portion.