JP2007107469A - Compressor, freezing device and refrigerator mounting the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator capable of improving quietness by noise generated by hit of a compressor on a vessel due to impact force of collision of a rotary door and a refrigerator box main body when the rotary door is closed. <P>SOLUTION: An impact mitigating means is provided with keeping a space between a compressor main body 155 and a hermetic vessel 152. Even if the compressor main body 155 collides on the hermetic vessel 152 due to impact force when the rotary door 113 is closed, noise generated by hit of the compressor on the vessel is made not offensive by reducing impact noise at a time of collision, and silent property can be improved. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a compressor, a refrigeration apparatus including the compressor, and a refrigerator in which the compressor is mounted in a recess on the top surface of the refrigerator.

  In recent years, refrigerators are required to be more energy-saving from the viewpoint of protecting the global environment, and to be further silenced from the viewpoint of improving usability and storage capacity, as well as improving amenities.

  Hereinafter, the conventional refrigerator will be described with reference to the drawings.

  Conventionally, this type of refrigerator has a method in which a compressor or the like forming a machine room is installed on the top surface of the refrigerator main body, which is inconvenient when viewed from the user side, or on the upper back of the refrigerator main body (for example, , See Patent Document 1).

  FIG. 14 is a sectional view of a conventional refrigerator, FIG. 15 is a horizontal sectional view of a conventional refrigerator, and FIG. 16 is a longitudinal sectional view of a compressor of the conventional refrigerator.

  Generally, a refrigerator discharges cold air generated by a refrigeration cycle in which a compressor 50, an evaporator 28, a condenser (not shown), and an expander (not shown) are connected by piping or the like, It is used to reduce the temperature of food and store foods and the like frozen or refrigerated.

  The box body 1 of the refrigerator is composed of a refrigerator room 7, a vegetable room 10, and a freezer room 11 from above.

  The refrigerating chamber 7 has a rotary door 13 that is a rotationally movable type, one end of which is rotatably supported via a hinge 12 on the front surface of the box body 1. The vegetable compartment 10 has a drawer door 15d that is slidable forward and backward via rails (not shown), and the freezer compartment 11 is also reciprocated similarly to the vegetable compartment 10. It has the drawer door 15c which is a formula.

  The inner edges of the revolving door 13 and the drawer doors 15c and 15d are in close contact with the sealing surface 17 of the box body 1 so as to block the inside and outside of the refrigerator and absorb the impact when the door is closed. A gasket 16 is attached.

  In addition, a plurality of door pockets 14 for storing food and the like are provided inside the rotary door 13.

  Above the box body 1, a recess 20 is provided that is recessed toward the refrigerator compartment 7 over the top surface 18 and the back surface 19 of the box body 1. The refrigerator compartment 7 is provided with a plurality of storage shelves 21 for storing foods, etc., but the uppermost section partitioned by the uppermost shelf 22 that is generally not easy to use as viewed from the user side. The back side of the storage space 22a and the second-stage storage space 23a protrudes in a convex shape by a recess 20 provided in the upper back of the box body 1.

  The recess 20 is provided with a compressor 50, a machine room fan 90, a condenser (not shown), a dryer (not shown), and the like.

  Next, the compressor will be described.

  The compressor 50 includes a compressor main body 55 including an electric element 58 including a stator 60 and a rotor 62 and a compression element 63 driven by the electric element 58 in a substantially spherical sealed container 52 formed of a steel plate. The compressor body 55 is supported by the suspension spring 56 with respect to the sealed container 52 and a flexible discharge capillary (not shown) is attached between the compression element 63 and the sealed container 52. (For example, refer to Patent Document 2).

  The crankshaft 68 of the compression element 63 includes a main shaft 66 and an eccentric shaft 67. The main shaft 66 is rotatably supported by a bearing portion 64 of a block 59, and the rotor 62 is fixed.

  The piston 65 is reciprocally inserted into a cylinder 73 formed integrally with the block 59, and the cylinder 73 forms a compression chamber 76 together with the valve plate 75. The connecting means 69 connects the eccentric shaft 67 and the piston 65.

  About the compressor comprised as mentioned above, the operation | movement is demonstrated below.

When the electric element 58 is energized, the rotor 62 rotates together with the crankshaft 68 by the rotating magnetic field generated in the stator 60. By the rotation of the main shaft 66, the eccentric motion of the eccentric shaft 67 is transmitted to the piston 65 through the connecting means 69, and the piston 65 reciprocates in the cylinder 73. The refrigerant 53 returned from the refrigeration cycle outside the sealed container 52 is introduced into the compression chamber 76 and compressed by the piston 65 in the compression chamber 76, and the compressed refrigerant 53 is refrigeration cycle (not shown) outside the sealed container 52. ) And is generally used in refrigerators for home use.
JP-A-11-183014 Japanese Patent Publication No.62-44108

  However, in the above-described conventional configuration, when the rotary door 13 is closed in a state where food or the like is stored in the door pocket 14 of the rotary door 13, the gasket 16 and the seal surface 17 of the box body 1 collide with each other. The impact force that cannot be absorbed by the heat is transmitted from the seal surface 17 to the box body 1, and the box body 1 of the refrigerator may swing back and forth. At this time, the inner wall of the sealed container 52 of the compressor 50 and the compressor main body 55 may come into contact with each other.

  When the sealed container 52 and the block 59 of the compressor main body 55 come into contact with each other, both of them are made of metal, so that a large collision sound, so-called hooking sound, is sporadically generated. Moreover, the sealed container 52 formed of a steel plate usually has a natural value of about 2 kHz to 5 kHz, and is relatively harsh. Moreover, since the sealed container formed by molding a steel plate has little attenuation with respect to sound, unpleasant noise may occur for a relatively long time.

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide a refrigerator capable of suppressing noise per unit of the compressor 50 caused by an impact when the rotary door 13 is closed, and making it quieter.

  In order to solve the above conventional problems, a compressor according to the present invention includes a hermetic container, an electric element including a stator and a rotor, and a compression element driven by the electric element, and the electric element and the compression The compressor body consisting of the element is elastically supported via a support member from the lower side in the sealed container, and includes an impact reducing means between the compression element and the sealed container, The impact reducing means is disposed with a space between the compressor body or the sealed container.

  Thereby, since the impact force transmitted to the compressor through the refrigerator box body when the door is closed can be reduced, it is possible to reduce the noise per unit of the compressor or improve the audibility.

  In the refrigerator of the present invention, the impact reduction means reduces the noise per unit of the compressor or improves the audibility, so that it is possible to provide a refrigerator with high silence.

  The invention according to claim 1 includes a hermetic container, an electric element including a stator and a rotor, and a compression element driven by the electric element, and a compressor main body including the electric element and the compression element includes: The elastic member is elastically supported through a support member from the lower side in the sealed container, and includes an impact reducing means between the compression element and the sealed container, and the impact reducing means is the compressor It is arranged with a space between the main body or the sealed container.

  As a result, since the compressor body is elastically supported on the lower side of the sealed container, the compressor body collides with the sealed container even when the compressor body moves easily when an external impact force is applied. Since the impact force at the time of performing can be reduced and the collision sound can be suppressed, the hooking sound becomes inconspicuous and the quietness can be improved.

  According to a second aspect of the present invention, the compressor body is provided with an electric element at the lower part and a compression element on the upper side of the electric element, and the compression element is provided with impact reducing means. Is.

  As a result, the compressor body is elastically supported in the vicinity of the electric element located on the lower side of the compressor body, so that when the external impact force is applied, the compressor body is farthest away from the elastic support portion. Even when the amplitude of the swing of the element increases, the compression element is provided with impact reduction means, so that the impact force when the compression element collides with the sealed container can be reduced and the impact sound can be suppressed. The hit sound is not harsh, and the quietness can be improved.

  According to a third aspect of the present invention, the compressor is an inverter compressor that is driven at a plurality of rotation speeds, and the stator of the electric element provided in the compressor body is provided with a permanent magnet. .

  As a result, the compressor main body is elastically supported in the vicinity of the electric element located on the lower side of the compressor main body, and a permanent magnet is used for the electric element, thereby providing a motor that is greatly reduced in size. When the impact force from the outside is applied, the amplitude of the electric element provided at the lower part cannot be suppressed by the weight of the electric element, and the amplitude of the oscillation of the compression element is very large because it is separated from the elastic support part. Even if the compressor body is equipped with impact reduction means, the impact force when the compressor body collides with the sealed container can be reduced and the collision noise can be suppressed, so the sound per unit is not harsh. , Quietness can be improved.

  According to a fourth aspect of the present invention, the compression element is heavier than the electric element, and the compression element is provided with impact reducing means.

  Thus, even if the amplitude of the oscillation of the compression element is increased due to external impact force because it is heavier than the electric element, the compression element collides with the sealed container by providing impact reduction means on the compression element. Since the impact force at the time of operation can be reduced and the collision sound can be suppressed, the sound of the hook is not harsh and the quietness can be improved.

  According to a fifth aspect of the present invention, the impact reducing means is a shock-absorbing member having a spring property attached to at least one of the compressor body or the sealed container.

  As a result, the shock-absorbing member can be absorbed by the spring by disposing the shock-absorbing shock-absorbing member at the portion where the sealed container and the compressor main body collide, so that the sound per unit can be reduced and the quietness can be improved. it can.

  According to a sixth aspect of the present invention, the impact reducing means is arranged so that the gap between the compressor main body and the sealed container is smaller than other portions.

  Thereby, even when the same impact force is applied from the outside, the compressor body collides with a small amount of vibration, that is, at a low speed, so that the hook contact sound is reduced and the quietness can be improved.

  According to the seventh aspect of the present invention, the impact reducing means is provided between the compressor body and the sealed container in the substantially horizontal direction.

  As a result, even if the compressor body is displaced in the horizontal direction due to the horizontal force acting when the refrigerator door is closed, the impact sound can be reduced by the impact reducing means, so the impact sound is not harsh. It is suppressed and the quietness can be improved.

  According to an eighth aspect of the present invention, the impact reducing means is provided between the compressor main body and the hermetic container in a substantially vertical direction, and is arranged at the uppermost part of the compressor main body.

  As a result, when an impact force is applied from the outside, not only the horizontal swing but also the vertical swing occurs due to the action of the elastic force of the elastic supporting member arranged at the bottom. In addition, the upper part of the compressor body is at a high position in the compressor body, and further away from the center of the compressor body, so it is easy to hit the sealed container, but the impact reduction means can mitigate the noise per hook, Silence can be improved.

  The invention according to claim 9 is a reciprocating compressor in which the compression element includes a cylinder and a piston that reciprocates within the cylinder, and the impact reducing means is a compressor main body in the reciprocating direction of the piston. It is arranged on the cylinder side from the center of.

  As a result, the cylinder area is located away from the center of gravity of the compressor body, so the displacement is likely to increase, and noise due to the hook tends to occur. Can be improved.

  In the invention according to claim 10, the compression element and the sealed container are elastically connected to each other through the discharge thin tube, and the impact reducing means is connected to the compressor main body of the discharge thin tube with respect to the center line in the longitudinal direction of the compressor. Is disposed on the compressor body opposite to the mounting position.

  As a result, the discharge thin tube has a spring property, and the attachment position to the compressor body is not easily displaced, and conversely, the displacement away from the attachment position tends to be large, and noise due to the hook is likely to occur. However, by providing the impact reducing means, it is possible to relieve the sound of the hook and improve the quietness.

  According to an eleventh aspect of the present invention, the support member is a suspension spring made of a coil spring, and the impact reducing means is on an extension line in a direction in which the suspension spring is disposed with respect to the center of the compressor in a cross section viewed from above. It arranges in the compressor main body located in.

  As a result, since the suspension spring stably supports the compressor body, the suspension spring is arranged in a portion that is almost evenly separated from the center of the compressor. This can mitigate the sound of the hook and improve the quietness.

  According to a twelfth aspect of the present invention, the support member is a suspension spring made of a coil spring, and at least three suspensions are provided, and a virtual line connecting outer peripheries of the suspension springs in a cross section viewed from above. Is also arranged on the outer compression element.

  As a result, since the suspension spring stably supports the compressor body, the suspension spring is disposed at a portion that is substantially evenly separated from the center of the compressor, so the portion located outside the suspension spring tends to be close to the sealed container. By providing the impact reducing means, it is possible to alleviate the sound per hook and improve the quietness.

  In a thirteenth aspect of the invention, the impact reducing means is a buffer member formed of a thin metal plate.

  This makes it possible to provide impact reduction means with sufficient durability by using metal for the impact reduction means, and further change the compressor design by making the impact reduction buffer member into a thin plate shape. Since a cushioning member can be added, productivity can be improved.

  In the invention described in claim 14, a part of the impact reducing means is welded and fixed to the inner surface of the sealed container or the compressor body, and the other part has a clearance from the fixed surface of the inner surface of the sealed container or the compressor body. It is a buffer member formed with the thin plate arrange | positioned in the state.

  As a result, a part of the metal thin plate is welded and fixed to the inner surface of the sealed container, so that it can be securely fixed to the sealed container formed by welding, and can be prevented from falling off even when an impact is applied, and reliability is improved. improves.

  In the invention described in claim 15, the impact reducing means is fixed without providing a gap between the buffer member and the inner surface of the sealed container or the compressor body.

  Thus, since no gap is provided, a continuous collision sound is not generated when the thin plate collides with the hermetic container. Therefore, it is possible to improve the audibility of the hooking sound and to improve the quietness.

  According to a sixteenth aspect of the present invention, the impact reducing means is a buffer member using a coil spring.

  Thus, by using a coil spring, it is possible to configure an inexpensive and highly reliable spring against repeated collisions, and the reliability is improved.

  The invention according to claim 17 is the shock-absorbing member, wherein the impact reducing means is formed of a material having a larger attenuation rate than iron.

  As a result, even if a collision occurs, the attenuation is large, so that the sound generation immediately converges, so that the hooking sound does not become annoying and the quietness can be improved.

  According to an eighteenth aspect of the present invention, the impact reducing means is a buffer member formed of a polymer material such as synthetic resin or rubber.

  Thereby, injection molding is possible, and it is possible to cope with various shapes, and since the productivity is high, the impact absorbing means can be provided at low cost.

  According to the nineteenth aspect of the present invention, the support member is a suspension spring made of a coil spring, and the impact reduction means further includes a support part impact reduction means provided in a support part formed of synthetic resin, One end of the suspension spring is locked to the support portion impact reducing means.

  As a result, in addition to the impact reducing means provided in the compressor main body, the transmission of vibration can be suppressed and the noise can be reduced even in the support portion by the resin support portion impact reducing means, and the quietness can be further improved. .

  The invention described in claim 20 has a refrigeration cycle in which a compressor, a condenser, a decompressor, and an evaporator are provided in this order to form a series of refrigerant flow paths. The compressor as described in any one of 19 is mounted.

  As a result, even in a refrigeration apparatus in which a hook contact within the compressor is likely to occur due to an external impact force, noise reduction can be improved by reducing the hook contact noise of the compressor.

  The invention according to claim 21 has a box body in which a storage room provided with a revolving door that opens and closes on the front surface is arranged at the top, and the top surface of the box body has any one of claims 1 to 19. Equipped with the compressor described in 1.

  As a result, the compressor is placed on the top of the refrigerator, so that when the door is closed, when the impact force is applied from the outside, the bottom surface part, which is the installation surface of the refrigerator, becomes the fixed end, and the top surface part farthest from the fixed end The free end has the largest vibration amplitude near the free end, and the compressor is located near the free end. Since the force can be reduced, the quietness can be improved by reducing the noise per unit of the compressor.

  According to a twenty-second aspect of the present invention, a concave portion is formed on the top storage space side in the storage chamber over the top and back surfaces of the box body, and a compressor is mounted in the concave portion.

  As a result, after reducing the hook contact of the compressor, since the wall of the storage chamber is located on the front side of the compressor, it is possible to reduce the forward transmission of the sound of the compressor hook. Silence can be improved.

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

(Embodiment 1)
FIG. 1 is a cross-sectional view of a configuration of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a perspective view of the refrigerator according to the embodiment, and FIG. 3 is an opening / closing locus of a revolving door as viewed from above the refrigerator according to the embodiment. FIG. 4 is a schematic cross-sectional view, FIG. 4 is a vertical cross-sectional view of the compressor as viewed from the back of the refrigerator in the same embodiment, FIG. 5 is a horizontal cross-sectional view of the compressor as viewed from the top of the refrigerator in the same embodiment, and FIG. FIG. 7 is a characteristic diagram showing the behavior of the refrigerator when the rotary door is closed in the embodiment, and FIG. 7 is a characteristic diagram showing the behavior of the compressor when the rotary door is closed in the embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  1 to 6, the refrigerator includes a compressor 150, a discharge pipe 140 connected to the compressor 150, a condenser (not shown), a capillary 142 that is a decompressor, and a dryer that removes moisture ( (Not shown), an evaporator 128 in which the internal fan 191 is disposed in the vicinity, and a refrigeration cycle configured by connecting the suction pipe 141 in an annular shape are built in the box body 101, and are generated by this refrigeration cycle. The cool air is discharged, the temperature in the storage 106 is lowered, and food and the like are stored frozen and refrigerated. Further, the bottom surface of the box body 101 is provided with wheels 133 at four corners so that the refrigerator can be easily moved, and the refrigerator is in contact with the floor surface at four points of these wheels 133.

  The box body 101 injects a foam insulating material 104 into a space formed by an inner box 102 obtained by vacuum-forming a resin body such as ABS and an outer box 103 using a magnetic body made of a metal material such as a pre-coated steel plate. It has a thermal insulation wall. For the heat insulator 104, for example, a hard urethane foam, a phenol foam, a styrene foam, or the like is used. In addition, if hydrocarbon-based cyclopentane is used as the foaming material, it is even better from the viewpoint of preventing global warming.

  The box body 101 is divided into a plurality of heat insulating sections, and a door 105 is provided on each of the front surfaces 143 of the box body 101. The insulated storage chamber 106 is, from above, a refrigeration chamber 107, a switching chamber 109a and an ice making chamber 109b, a vegetable chamber 110, and a freezing chamber 111 provided side by side.

  The refrigerating compartment 107 is provided with a one-sided rotary door 113 that is rotatably supported via a hinge 112 with the left side of the front surface 143 as a fulcrum. In addition, the rotary door 113 is provided with a plurality of door pockets 114 as spaces for storing food and the like.

  On the other hand, the switching chamber 109a, the ice making chamber 109b, the vegetable chamber 110, and the freezing chamber 111 are all drawer chambers 108, and all of them are reciprocating slidable forward and backward via rails (not shown). Drawer doors 115a, 115b, 115c, and 115d that are of the formula are provided.

  When the inner edge of the revolving door 113 and the drawer doors 115a, 115b, 115c, and 115d are in close contact with the seal surface 117 of the box body 101, the inside and outside of the refrigerator are shut off, and each door 105 is closed. A gasket 116 for absorbing the impact is attached.

  The gasket 116 is formed by extruding a soft vinyl chloride resin body having characteristics such as durability, flexibility, and economy and having excellent processability. The gasket 116 incorporates a permanent magnet and a large number of air pockets divided by a partition wall, and the seal surface 117 on the side of the box body 101 to which the gasket 116 is closely attached has an outer box 103 made of a magnetic material. Since this is a magnetic body, a magnetic attractive force acts between the permanent magnet of the gasket 116.

  Above the box body 101, a recess 120 is provided that is recessed toward the refrigerator compartment 107 over the top surface 118 and the back surface 119 of the box body 101. The refrigerator compartment 107 is provided with a plurality of storage shelves 121 for storing food and the like, and the recess 120 is located on the uppermost storage space 122 a side partitioned by the uppermost shelf 122 and the inner box 102 in the refrigerator compartment 107. , And travels in a convex manner toward the second shelf storage space 123 a defined by the second shelf 123 and the uppermost shelf 122. More preferably, the indoor side bottom wall surface 125 of the convex portion 124 and the shelf bottom portion 122b of the uppermost shelf 122 are substantially the same horizontal plane.

  The recess 120 is provided with a top cover 126 fixed with screws or the like, and includes a compressor 150, a machine room fan 190, a condenser (not shown), a dryer (not shown), a discharge pipe 140, and a suction pipe. A part of the pipe 141 is accommodated. The upper portion of the top cover 126 is substantially flush with the top surface 118, and the top portion 151 of the compressor 150 is located at a position lower than the top surface 118.

  Also, with the aim of improving the assembly workability and serviceability of the refrigerator, in order to reduce the density of the piping and to make the piping connection portion visible from the rear, the compression on the near side as viewed from the rear surface 119 of the refrigerator The discharge pipe 140 and the suction pipe 141 are distributed to the left and right and welded to the discharge tube 140a and the suction tube 141a formed on the side surface of the machine 150, respectively.

  Next, the configuration of the compressor 150 will be described.

  A mortar-shaped lower container 185 formed by deep drawing of a rolled steel plate having a thickness of 2 to 4 mm is engaged with an inverted mortar-shaped upper container 186, and the engagement portion is welded all around to form a sealed container 152. The Inside the airtight container 152 is filled with isobutane (R600a) as the refrigerant 153, stores mineral oil as the oil 154, and a compressor main body 155 which is a mechanical part composed of the electric element 158 and the compression element 163 is disposed. ing. The compressor main body 155 is elastically provided via a suspension spring 156 including a coil spring as a support member between a support portion 187a fixed to the bottom of the sealed container 152 and a support portion 187b fixed to the lower end of the electric element 158. It is supported.

  The electric element 158 includes a stator 160 that is fixed below the block 159 and connected to an inverter drive circuit (not shown), and a rotor 162 that contains a permanent magnet and is fixed below the main shaft 166. An electric motor for driving is formed and driven by an inverter driving circuit at a plurality of operating frequencies including an operating frequency lower than the commercial power supply frequency. Further, the rotor 162 is provided with a permanent magnet, so that the height and weight are significantly reduced as compared with the induction motor, and the stator is compared with the distributed winding by using a salient pole concentrated winding type. Since the height and weight are greatly reduced, the electric element 158 has a lower overall height than the compression element 163.

  The crankshaft 168 of the compression element 163 includes a main shaft 166 and an eccentric shaft 167. The main shaft 166 is rotatably supported by a bearing portion 164 of the block 159, and a rotor 162 is fixed to the lower portion of the main shaft 166. Yes.

  The piston 165 is reciprocally inserted into a cylinder 173 formed integrally with the block 159, and the cylinder 173 forms a compression chamber 176 together with the valve plate 175. A piston pin 177 attached to the piston 165 is rotatably inserted into the connecting means 169, and the eccentric shaft 167 is rotatably inserted into the connecting means 169, so that the connecting means 169 has the eccentric shaft 167 and the piston 165. Are connected. Further, the suction muffler 179 is held by a cylinder head 178 that covers the valve plate 175.

  By the mechanism of the compression element 163, the rotational movement of the crankshaft 168 generated by the electric element 158 is converted into the reciprocating movement of the piston 165. The space volume of the compression chamber 176 is increased or decreased due to the reciprocating motion of the piston 165, whereby the refrigerant 153 in the sealed container 152 is sucked from the suction port of the suction muffler 179 and is provided inside the cylinder head 178. After being sucked and compressed in the compression chamber 176 through a valve (not shown), the discharge muffler 180 formed in the block 159 is discharged to a discharge tube 157 and a discharge tube which is a high-pressure pipe provided in the sealed container 152 Via 140a, it is discharged to the discharge pipe 140 outside the sealed container 152.

  Here, the discharge thin tube 157 is manufactured by a thin tube using a double wound steel tube having excellent pressure resistance with an inner diameter of 1.5 mm to 3.0 mm, high vibration fatigue strength, and easy bending. In order to make it difficult for vibrations in the reciprocating direction of the piston 165 to be transmitted particularly by bending, the rigidity in this direction is reduced. Further, the discharge thin tube 157 and the discharge tube 140 a of the sealed container 152 are joined at a connection portion 181.

  A plurality of legs 188 are fixed below the sealed container 152, and elastic members 189 are fixed to the pins 127 fixed to the recess 120 of the refrigerator via elastic members 189 locked to the legs 188. The position is fixed by loosely fitting the hole 189a of 189.

  The compressor body 155 is provided with at least one, preferably a plurality of, proximity portions to the sealed container 152. Specifically, the horizontal corners 159a, 159b, 159c, and 159d of the block 159 are provided with close portions with a clearance of about 3 to 6 mm from the sealed container 152 at the two upper locations 159e and 159f, and the suspension spring When the suspension springs 156 are also compressed by the support portions 187a and 187b that hold the 156, the clearance is selected so that the support portions 187a and 187b come into contact before the suspension springs 156 are fully adhered.

  In addition, among the proximity portions that are impact reducing means, the four corners 159a, 159b, 159c, and 159d in the horizontal direction of the block 159 are from imaginary lines (not shown) that connect the outer peripheries of the suspension springs in a cross section viewed from above the block. Is also arranged in the outer block 159.

  As a result, the suspension spring stably supports the main body of the compressor, so it is placed in a part that is almost evenly spaced from the center of the compressor, so this area tends to be close to a sealed container, but the impact is reduced. By providing the means, it is possible to relieve the sound of the hook and improve the quietness.

  Further, the proximity portion which is the vibration reducing means provided in the four corners 159a, 159b, 159c and 159d in the horizontal direction of the block 159 is a direction in which the suspension spring 156 is disposed with respect to the center of the compressor in a cross section viewed from above. Since the shock absorbing means is disposed at a portion that is substantially evenly separated from the center of the compressor by disposing the block on the extended line, the noise per unit can be reduced and the quietness can be improved. .

  Further, in addition to the effect of reducing the hook hitting sound, even if the compressor 150 is laid down during transportation, the block 159 and the sealed container 152 come into contact with each other in the vicinity, and the movement of the compressor body 155 is restricted. It is possible to prevent buckling from occurring due to the large deformation of the suspension spring 156, and the suspension spring 156 from being detached from the support portion 187a and the support portion 187b. In addition, with respect to the movable parts such as the suction muffler 179 made of a synthetic resin having a relatively low strength and the crankshaft 168 rotating at a high speed, the block 159 and the sealed container 152 come into contact with each other in the proximity portion. Since the suction muffler 179 and the movable parts do not collide directly, the structure can prevent the parts from being damaged. For this reason, when a large external force or displacement is applied to the compressor 150, the proximity portion of the compressor main body 155 comes into contact with the sealed container 152.

  Further, in the present embodiment, a plate-like plate having a spring property as an impact absorbing means in the vicinity of the horizontal corners 159a, 159b, 159c and 159d of the block 159 in the vicinity of the inner surface of the sealed container 152 with the block 159. The buffer member 193 is attached.

  The buffer member 193 is preferably made of a steel plate having spring properties such as carbon tool steel, and has a strip shape. And it arrange | positions so that the inner surface of the upper container 186 of the airtight container 152 may be followed, and the end 193a is attached by methods, such as resistance welding. The end portion 193b opposite to the welded end portion 193a is also in contact with the inner surface of the upper container 186 of the sealed container 152. More preferably, the buffer member 193 is attached in a deformed state, and a contact force is applied to the sealed container 152 by its spring property, so that the end part 193b is securely in contact with the sealed container 152. Similarly, the end portions 193c and 193d of the buffer member are configured to be in contact with the sealed container 152.

  In addition, since the buffer member 193 is in the form of a thin plate and is attached along the inner wall surface of the sealed container 152, the shape of the buffer member 193 is not required, so that almost no change in shape is required, so that the buffer member can be easily attached This is possible and can reduce noise.

  Further, since the buffer member 193 is attached to the sealed container 152 by welding, sufficient strength can be easily secured. Even if the lower container 185 and the upper container 186 are joined by welding after the buffer member 193 is attached, the buffer member 193 is buffered. The mounting strength of the member 193 does not decrease, and the buffer member 193 does not fall off due to a collision with the compressor main body 155, so that reliability can be ensured.

  Next, the impact force at the time of collision with the box body 101 when the rotary door 113 is closed and the influence on the compressor 150 will be described.

  The arc 132 is an opening / closing locus of the tip of the revolving door 113 on the side opposite to the hinge 112 side.

  Generally, there is momentum as a quantity representing the momentum of a moving object, and the momentum is represented by the product of mass and velocity. When the objects collide with each other, the momentum is stored unless an external force is applied.

  The rotary door 113 will be described. The product mv of the mass m of the rotary door 113 and the food stored in the door pocket 114 and the circumferential speed v of the center of gravity (G) is the momentum of the rotary door 113. Further, the circumferential speed v is expressed by a product rω of the rotation radius r of the center of gravity, that is, the length of almost half of the width of the rotary door 113 and the angular velocity ω of the rotary door 113 immediately before the collision with the seal surface 117.

  When the revolving door 113 is closed, the force corresponding to the momentum that the revolving door 113 has before the collision is very short on the side that receives the revolving door 113, that is, the seal surface 117 of the box body 101. Act on time. Hereinafter, this acting force is referred to as an impact force.

  The greater the momentum that the revolving door 113 has just before closing, the greater the impact force that is generated. Further, since the direction of motion immediately before the rotary door 113 is closed is the direction perpendicular to the front surface 143 of the refrigerator (the direction of arrow A), the impact force affects the vertical direction on the front surface 143 of the refrigerator.

  Furthermore, the food stored in the rotary door 113 and the door pocket 114 does not travel straight from the front surface of the refrigerator and collides with the seal surface 117 but rotates around the hinge 112. And the food stored in the revolving door 113 and the door pocket 114 is distributed in mass and tends to continue to rotate when the rotational movement is suddenly stopped. Therefore, the food in the clockwise direction (direction of arrow B) Coupled force due to rotational inertia acts.

  Therefore, when the revolving door 113 is closed, a force in the vertical direction with respect to the front surface 143 and a couple force that rotates the box body 101 are applied although the influence is smaller than this.

  When the revolving door 113 is closed, a magnetic force acts between the permanent magnet built in the gasket 116 and the seal surface 117 made of a magnetic material, and the gasket 116 comes into close contact with the seal surface 117. At this time, although the air pocket built in the gasket 116 absorbs the impact force to some extent, the impact force that cannot be absorbed is transmitted to the box body 101 of the refrigerator through the seal surface 117.

  Nowadays, the main capacity of the main refrigerator capacity band is 300L or more. Accordingly, as the refrigerator size increases, the radius of the arc 132, which is the opening / closing locus of the rotary door 113, increases, and in addition, the amount of storage in the door pocket 114 increases, so that the rotary door 113 combined with stored items and the like. It is inferred that the total weight of the box inevitably becomes heavy, and the impact force applied to the box body 101 when the rotary door 113 is closed increases synergistically.

  Furthermore, in a refrigerator having a single-open revolving door 113 as shown in the present embodiment, the mass of the door can be compared even when the angular speed at the time of closing the revolving door is the same as in a double-opening refrigerating machine in which the revolving door opens to the left and right Is approximately twice as large and the radius of rotation is approximately twice, so that a large impact force of approximately four times is generated.

  Hereinafter, the mechanism per hook of the compressor will be described with reference to FIGS.

  When the revolving door 113 is closed at a high speed with a large amount of storage in the door pocket 114, the impact force on the refrigerator already described becomes large, and from the front 143 to the rear (arrow A in the figure). Works. At this time, if the floor is not slippery, such as a carpet, the wheel 133 may not roll against the floor where the refrigerator is installed, and the impact of the refrigerator causes the refrigerator to be centered around the rear wheel 133. The upper part of the refrigerator is displaced backward so as to rotate. However, in this case, the front part of the refrigerator is slightly lifted, and a restoring force for returning the refrigerator to the front acts due to the gravity acting on the refrigerator. Therefore, after the upper part of the refrigerator is once displaced rearward due to the impact force when the revolving door 113 is closed, there is a movement that swings back and forth (in the direction of arrows B1 and B2 in the figure).

  The discharge tube 140 a and the suction tube 141 a formed on the side surface of the sealed container 152 are welded to the discharge pipe 140 and the suction pipe 141 formed on the refrigerator side, respectively, and are fixed below the sealed container 152. The leg 188 is fixed to the installation surface 120 a of the recess 120 via an elastic member 189 and a pin 127. Although the discharge pipe 140, the suction pipe 141, and the elastic member 189 are all elastic, they have higher rigidity than the suspension spring 156 and the discharge thin tube 157. Further, since the pin 127 is loosely fitted in the hole 189a of the elastic member 189, the elastic member 189 cannot be deformed beyond the gap provided between the hole 189a and the outer diameter of the pin. Therefore, it can be said that the airtight container 152 constituting the outer shell of the compressor 150 is almost restrained by the refrigerator. Therefore, when the refrigerator swings in the front-rear direction, the sealed container 152 similarly swings in the front-rear direction while being pulled by the refrigerator.

  On the other hand, inside the compressor 150, the compressor main body 155 comprising the compression element 163 and the electric element 158 is elastically supported by the suspension spring 156 and the discharge thin tube 157, so that the impact force when the rotary door 113 is closed is Then, it is transmitted to the compressor main body 155 via the suspension spring 156 and the discharge thin tube 157. However, since the suspension spring 156 and the discharge thin tube 157 are designed to have low rigidity so as not to transmit the vibration of the compressor main body 155 to the outside of the compressor 150, the suspension spring 156 and the discharge thin tube 157 are easily deformed. After being stored as the spring force, the compressor main body 155 is displaced with a slight delay, and as a result, the sealed container 152 first swings in the direction of arrow D in the figure, and the gap between the proximity portions 159b is once narrowed. . Thereafter, the compressor body 155 also swings in the direction of arrow C. Further, due to the restoring force acting on the refrigerator, the sealed container 152 is swung back together with the refrigerator in the direction of arrow C and collides with the compressor body 155 that continues to swing in the direction of arrow D.

  At this time, the position where the sealed container 152 and the compressor body 155 collide is the proximity portion 159a. This is because the rigidity of the support to the sealed container 152 is smaller on the opposite side of the position where the discharge capillary 157 of the compressor body 155 is attached to the compressor body 155 and the opposite side of the attachment position. As a result, the side opposite to the attachment position of the discharge thin tube 157 is easily displaced with respect to the sealed container 152, and the compressor body 155 starts to move after the suspension spring 156 and the like are temporarily deformed. Will be delayed. Accordingly, since the sealed container 152 and the compressor main body 155 are most likely to approach each other, a collision occurs on the opposite side of the attachment position of the discharge thin tube 157.

  Further, in the compressor 150, the periphery of the cylinder head 178 is farthest from the main shaft 166 that is the center of the compressor 150, and the compressor body 155 is elastically supported by the suspension spring 156 on the lower side of the hermetic container 152. Further, it is a part away from the support surface of the suspension spring 156. Therefore, when the compressor main body 155 swings, the inertial force is likely to work greatly, and the hook contact is likely to occur.

  Further, in the compressor main body 155 in which the electric element 158 is disposed on the lower side, the interval between the suspension springs 156 is within a range in which the outer dimensions of the compressor 150 do not increase so that the compressor main body 155 can be stably supported. It attaches to the support part 187a provided in the four corners of the lower end surface of the stator 160 so that it may become as wide as possible. In addition, since the closed container 152 is selected so that the radius of curvature is small so that the outer diameter of the compressor 150 is small and the rigidity is high, the suspension spring 156 of the compressor body 155 and the closed container 152 are It will be placed in close proximity. Therefore, when the compressor main body 155 is swung, the vicinity of the suspension spring 156 is close to the sealed container 152, and the hook contact is likely to occur.

  Further, the portion of the compressor main body 155 located outside the suspension spring 156 is away from the center of the compressor main body 155 and is close to the sealed container 152. In addition, the inertial force is easy to work and Likely to happen.

  In addition to the impact force indicated by arrow A on the refrigerator, although the force is smaller than this, the couple indicated by arrow B acts, so the entire refrigerator is twisted in the clockwise direction when viewed from the top. It becomes a state like this. As a result, the compressor 150 arranged on the back surface 119 side of the refrigerator receives a right acting force represented by an arrow E in addition to an impact force represented by an arrow A. The acting force to the right diagonally backward indicated by the arrow F is acting on the compressor 150.

  For the above reasons, the compressor main body 155 is displaced in the direction of the arrow F and collides with the sealed container 152 at the proximity portion 159a diagonally right rearward of the block 159.

  However, in the compressor 150 according to the present embodiment, a plate-like member, which is a buffer member 193, is provided as an impact absorbing means on the inner wall surface of the sealed container 152 at a position facing the proximity portions 159a, 159b, 159c, 159d of the block 159. Even if the compressor main body 155 collides, the impact absorbing means absorbs the impact when the impact occurs, so the sound at the time of collision is small and the timbre is not harsh. Can be planned.

  Further, since one end of the buffer member 193 is welded and the part that actually collides is pressed against the sealed container 152 by the elasticity of the plate material, a frictional force acts between the buffer member 193 and the sealed container 152. However, since the damping effect is great, the impact sound is immediately attenuated, so that the refrigerator can be quieted.

  As described above, since the compressor main body 155 is elastically supported on the lower side of the sealed container 152, the compressor main body 155 is easily compressed even when an external impact force is applied. Since the impact force when the machine main body 155 collides with the sealed container 152 can be reduced and the collision noise can be suppressed, the hook hitting sound can be reduced and the quietness can be improved.

  Further, as in the present embodiment, the compressor main body 155 is provided with the electric element 158 in the lower part and the compression element 163 is provided on the upper side of the electric element 158, so that an external impact force is applied. In this case, even when the amplitude of the swing of the compression element 163 is the largest because it is away from the suspension spring 156 that is an elastic support portion, the compression element 163 is provided with an impact reducing means on the compression element 163 side, The impact force at the time of collision with the sealed container 152 can be reduced, and the collision sound can be suppressed.

  Further, as in the present embodiment, the compressor is an inverter compressor that is driven at a plurality of rotational speeds, and the rotor 162 of the electric element 158 provided in the compressor body 155 is provided with a permanent magnet. Therefore, the height and weight are significantly reduced compared to the induction motor, and the stator 160 uses a salient pole concentrated winding type, so that the height and weight are significantly higher than the distributed winding. Since the electric element 158 has a lower overall height than the compression element 163, the compressor body 155 is elastically supported in the vicinity of the electric element 158 located on the lower side of the compressor body 155. In addition, since a permanent magnet is used for the electric element 158, the size of the electric element 158 is greatly reduced. Therefore, when an external impact force is applied, the swinging amplitude is suppressed by the weight of the electric element 158 provided at the lower part. Even if the amplitude of the oscillation of the compression element 163 becomes very large because it is separated from the suspension spring 156 that is an elastic support portion, the compressor main body 155 is provided with an impact reducing means, so Since the impact force when the machine main body 155 collides with the sealed container 152 can be reduced and the collision noise can be suppressed, the hook contact noise can be reduced and the silence can be improved.

  Even when the compression element 163 is heavier than the electric element 158 by reducing the size of the electric element 158 in this way, the impact force from the outside is increased because the weight is heavier than the electric element 158. Even when the amplitude of the oscillation of the compression element 163 due to is increased, by providing the compression element 163 with impact reducing means, the impact force when the compression element 163 collides with the sealed container 152 is reduced, and the collision noise is suppressed. As a result, it is possible to improve comfort. It has been confirmed by the inventors' actual machine test using a 400-liter refrigerator that the collision sound by the hook is so small that it cannot be heard.

  In addition, although the shock absorbing member as the shock absorbing means is attached to the four inner wall surfaces of the sealed container 152 at positions facing the proximity portions 159a, 159b, 159c, and 159d of the block 159, it is attached to at least one of them. In this way, the same effect can be obtained.

  Furthermore, the shock absorbing means may be attached to any one of the proximity portions 159a, 159b, 159c, and 159d of the block 159 as a shock absorbing means.

  Further, although a thin plate-like spring is used as a shock absorbing member as an impact absorbing means, a collision sound can be reduced even if a member having a spring property other than this is attached to a portion where the block 159 is close to the sealed container 152. it can. In particular, when a general coil spring as a spring is attached to the adjacent portion of the block 159 and the sealed container 152 to constitute the shock absorbing means, the stress is dispersed throughout the coil spring even against repeated collisions. And is easy to manufacture, and can be inexpensive and highly reliable.

  In addition, as a shock absorbing means, a material having a greater attenuation than iron, specifically, a synthetic resin such as PBT, PET, PPS, and fluorine resin that satisfies the conditions of heat resistance, oil resistance and refrigerant resistance, nitrile rubber and fluoro rubber A member formed of a polymer material such as the above may be attached to the vicinity of the sealed container 152 and the block 159. In this case, since the rigidity of the material is smaller than that of metal and the attenuation is large, the collision sound generated at the time of collision is small, and since the sound does not reverberate due to the attenuation effect, the noise generated by the collision can be reduced. it can.

(Embodiment 2)
FIG. 8 is a structural sectional view of the refrigerator in the second embodiment of the present invention, FIG. 9 is a longitudinal sectional view of the compressor as viewed from the back of the refrigerator in the same embodiment, and FIG. 10 is a view from the top of the refrigerator in the same embodiment. It is a horizontal sectional view of a compressor.

  Hereinafter, the description of the present embodiment will be made with respect to the embodiment of the present invention based on FIG. 8 to FIG. 10, but the same components as those of the first embodiment will be denoted by the same reference numerals and detailed description thereof will be omitted.

  8 to 10, the refrigerator includes a compressor 250, a discharge pipe 140 connected to the compressor 250, a condenser (not shown), a capillary 142 that is a decompressor, and a dryer that removes moisture ( (Not shown), an evaporator 128 in which the internal fan 191 is disposed in the vicinity, and a refrigeration cycle configured by connecting the suction pipe 141 in an annular shape are built in the box body 101, and are generated by this refrigeration cycle. The cool air is discharged, the temperature in the storage 106 is lowered, and food and the like are stored frozen and refrigerated.

  Next, the configuration of the compressor 250 will be described.

  A mortar-shaped lower container 185 formed by deep drawing of a rolled steel plate having a thickness of 2 to 4 mm is engaged with an inverted mortar-shaped upper container 186, and the engagement portion is welded all around to form a sealed container 252. The Inside the sealed container 252 is filled with isobutane (R600a) as the refrigerant 153, stores mineral oil as the oil 154, and a compressor main body 255, which is a mechanical part composed of the electric element 158 and the compression element 263, is disposed. ing. The compressor main body 255 is elastically supported via a suspension spring 156 between a support portion 187 a fixed to the bottom of the hermetic container 252 and a support portion 187 b fixed to the lower end of the electric element 158.

  The compressor body 255 is provided with at least one, preferably a plurality of, proximity portions 255a to the sealed container 252. Specifically, the horizontal corners 159a, 159b, 159c, and 159d of the block 159 are provided with close portions with a clearance of about 3 to 6 mm from the sealed container 152 at the two upper locations 159e and 159f, and the suspension spring When the suspension springs 156 are also compressed by the support portions 187a and 187b that hold the 156, the clearance is selected so that the support portions 187a and 187b come into contact before the suspension springs 156 are fully adhered.

  As a result, even if the compressor 250 is laid down during transportation or the like, the block 159 and the sealed container 252 come into contact with each other at the proximity portion 255a and restrict the movement of the compressor body 255, so that the suspension spring 156 is greatly deformed. As a result, buckling can be prevented and the suspension spring 156 can be prevented from coming off the support portion 187a and the support portion 187b. Further, the movable container 252 such as the suction muffler 179 made of a synthetic resin having a relatively low strength and the crankshaft 168 rotating at a high speed is also in contact with the closed container 252 at the proximity portion 255a. Since the suction muffler 179 and the movable parts do not collide directly with each other, the parts can be prevented from being damaged. For this reason, when a large external force or displacement is applied to the compressor 250, the proximity portion of the compressor main body 255 comes into contact with the sealed container 152.

  Furthermore, in the present embodiment, a resin-made buffer member 293 is attached to the horizontal end portion 159a of the block 159 as a shock-absorbing member as a shock-absorbing member in the vicinity of the inner surface of the sealed container 252 with the block 159. The gap between the sealed container 252 and the compressor main body 255 is smaller than that of other proximity portions.

  The end 159a is on the back side of the refrigerator and on the cylinder head 178 side, and is a position where the sealed container 252 and the compressor main body 255 collide with each other due to an impact force when the rotary door 113 is closed. The reason for this will be described below.

  First, the end portion 159a is located on the compressor main body 255 on the rear side of the refrigerator, and the sealed container 252 swings back and forth by the impact force when the rotary door 113 is closed, and the sealed container 252. This is because the compressor main body 255, which is delayed and largely displaced toward the rear side of the refrigerator, collides with the rear side of the refrigerator.

  Second, the end 159a is located on the opposite side of the position where the discharge capillary 157 of the compressor body 255 is attached to the compressor body 255, and the opposite side has less support rigidity for the sealed container 252. This is because it is easily displaced with respect to the sealed container 252.

  Third, the end 159a is located on the cylinder head 178 side of the compressor body 255, and the periphery of the cylinder head 178 in the compressor 250 is farthest from the main shaft 166 that is the center of the compressor 250, and the suspension This is because it is a part away from the support surface of the spring 156, and therefore, when the compressor body 255 swings, the inertial force is likely to work greatly and the hook contact is likely to occur.

  Further, in addition to the above reason, the end portion 159a has a gap made smaller than other adjacent portions by adding the buffer member 293, so that a collision is surely generated at this portion.

  Since the gap is small, a collision occurs in a state where the relative speed between the compressor main body 255 and the sealed container 252 is low, and the collision sound is much smaller than when the gap is wide.

  Further, the buffer member 293 is desirably formed of a polymer material such as synthetic resin or rubber, and specifically, formed of PBT, which is a synthetic resin excellent in heat resistance, oil resistance, and refrigerant resistance. Since it is small, it absorbs the impact at the time of collision by deformation, and since the attenuation of the material itself is larger than that of metal such as iron, noise can be reduced.

  In addition, the buffer member 293 can be injection-molded by forming it with a polymer material such as synthetic resin or rubber, and can cope with various shapes and has high productivity, so that it can be provided with shock absorbing means at low cost. .

  In this embodiment, the material of the shock absorbing member 293 attached as the shock absorbing member as the shock absorbing member is PBT. However, other synthetic resins such as PET, PPS, fluorine-based resin, nitrile rubber, fluorine rubber, etc. It is good also as a member formed with the high molecular material. In addition, the shock absorbing member, which is a shock absorbing means, is formed of cast iron integrally with the block 159. That is, even if the gap with the sealed container 252 is reduced by changing the shape of the block 159, the impact is compared with the case of forming with a synthetic resin. Although the sound becomes louder, the effect of reducing the collision sound can be obtained by the effect of reducing the gap.

  Further, although the buffer member 293 is attached to the block 159, the same noise reduction effect can be obtained even if it is attached to the sealed container 252.

(Embodiment 3)
FIG. 11 is a structural sectional view of a refrigerator according to Embodiment 3 of the present invention, FIG. 12 is a longitudinal sectional view of the compressor as viewed from the back of the refrigerator in the same embodiment, and FIG. 13 is viewed from the top of the refrigerator according to the same embodiment. It is a horizontal sectional view of a compressor.

  Hereinafter, the present embodiment will be described with reference to FIGS. 11 to 13, but the same configurations as those of the first and second embodiments are denoted by the same reference numerals and detailed. Description is omitted.

  11 to 13, the refrigerator includes a compressor 350, a discharge pipe 140 connected to the compressor 350, a condenser (not shown), a capillary 142 that is a decompressor, and a dryer that removes moisture ( (Not shown), an evaporator 128 in which the internal fan 191 is disposed in the vicinity, and a refrigeration cycle configured by connecting the suction pipe 141 in an annular shape are built in the box body 101, and are generated by this refrigeration cycle. The cool air is discharged, the temperature in the storage 106 is lowered, and food and the like are stored frozen and refrigerated.

  Next, the configuration of the compressor 350 will be described.

  A mortar-shaped lower container 185 formed by deep drawing of a rolled steel plate having a thickness of 2 to 4 mm is engaged with an inverted mortar-shaped upper container 186, and the entire portion is welded to form a sealed container 352. The Inside the airtight container 352 is filled with isobutane (R600a) as the refrigerant 153, stores mineral oil as the oil 154, and a compressor main body 355 which is a mechanical part composed of the electric element 158 and the compression element 363 is disposed. ing.

  The stator 160 of the electric element 158 is fixed to the block 159 of the compression element 363 by a bolt 394 and has a cap shape made of resin on the head of the bolt 394 located on the lower side of the stator 160. A support portion 387b is attached.

  The compressor main body 355 is elastically supported via a suspension spring 156 between a support portion 387a fixed to the bottom of the sealed container 352 and a resin support portion 387b fixed to the lower end of the electric element 158. .

  The compressor main body 355 is provided with proximity portions 355a with a plurality of sealed containers 352. Specifically, the horizontal corners 159a, 159b, 159c, and 159d of the block 159 are provided in close proximity to the airtight container 152 in the upper two places 159e and 159f with a clearance of about 3 to 6 mm, and the suspension spring When the suspension springs 156 are also compressed by the support portions 387a and 387b holding the 156, a gap is selected so that the support portions 387a and 387b come into contact before the suspension springs 156 are fully adhered.

  For these adjacent portions 355a, first, in the horizontal direction, as in the first embodiment, among the adjacent portions of the inner surface of the sealed container 152 with the block 159, the horizontal corners 159a, 159b of the block 159 are provided. In the vicinity of 159c and 159d, a plate-like buffer member 393a having a spring property is attached as the shock absorbing means 392. By these buffer members 393a, the compressor main body 355 swings in the horizontal direction, The collision sound when colliding with the sealed container 352 can be reduced.

  Further, regarding the vertical direction, the resin support portion 387b is used, and the block 159 is close to the top surface of the sealed container 352 above the cylinder 173, and the block 159 is also on the opposite side of the proximity portion 159e. Buffer members 393b and 393c formed of PBT, which is a synthetic resin having a greater attenuation than iron, are attached to two portions of the proximity portion 159f close to the top surface of the sealed container 352 as a shock absorber as a shock reducing means. ing.

  Although the refrigerator is supported by four wheels 133, the upper part of the refrigerator may easily shake in the vertical direction if there is a backlash because the floor is not flat. When the revolving door 113 is closed in the refrigerator in such an installed state, the wheel 133 with backlash moves up and down, so the compressor 350 swings up and down, and the compressor body 155 moves up and down with respect to the sealed container 152. It becomes easy to shake.

  However, according to the present embodiment, of the support portion 387a and the support portion 387b that hold the suspension spring 156, the support portion 387b to which the compressor main body 355 is attached is made of resin, and the upper portion of the block 159 Also in the proximity portions 159e and 159f of the sealed container 352, the buffer members 393b and 393c made of resin are attached to the block 159.

  Accordingly, even when the compressor main body 355 swings up and down, the suspension spring 156 is compressed, and the support portion 387a and the support portion 387b collide, the buffer members 393b and 393c of the compressor main body 355 are conversely the upper sealed container 352. Even when the vehicle collides with the top surface, the collision sound is small and noise can be reduced.

  In the present embodiment, the buffer members 393a, 393b, and 393c are arranged in all directions in the vertical direction and the horizontal direction of the compressor body 355, but the buffer members are not necessarily arranged in all directions. Depending on the combination of the refrigerator and the compressor, it is possible to obtain the effect of reducing the collision sound simply by disposing it at the position where the collision is most likely to occur.

  Further, in this embodiment, the resin cushioning member is arranged on the upper portion of the compressor main body 355, but the impact caused by the collision can also be absorbed by adding a springy member such as a metal coil spring or leaf spring. , Relaxation and silencing can be achieved. In addition, the noise can be reduced by reducing the speed at the time of collision by reducing the gap.

  As described above, since the refrigerator according to the present invention can achieve noise reduction, it can be applied to a refrigerator for home or business use.

Cross-sectional view of the refrigerator according to Embodiment 1 of the present invention The perspective view of the refrigerator in the same embodiment Schematic sectional view of the refrigerator in the same embodiment Vertical sectional view of the compressor in the same embodiment Horizontal sectional view of the compressor in the same embodiment Characteristic diagram showing the behavior of the compressor in the same embodiment The characteristic figure which shows the behavior of the refrigerator in the same embodiment Cross-sectional view of a refrigerator according to Embodiment 2 of the present invention Vertical sectional view of the compressor in the same embodiment Horizontal sectional view of the compressor in the same embodiment Cross-sectional view of a refrigerator according to Embodiment 3 of the present invention Vertical sectional view of the compressor in the same embodiment Horizontal sectional view of the compressor in the same embodiment Cross-sectional view of a conventional refrigerator Horizontal sectional view of a conventional refrigerator Longitudinal sectional view of a conventional refrigerator compressor

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Box main body 106 Storage room 118 Top surface 119 Back surface 122a Top stage storage space 113 Revolving door 120 Recessed part 150,250,350 Compressor 152,252,352 Airtight container 155,255,355 Compressor main body 156 Suspension spring 157 Discharge capillary 158 Electric element 160 Stator 162 Rotor 163 Compression element 173 Cylinder 193, 293, 393, 393a, 393b, 393c Buffer member 195 Support member 387b Support part

Claims (22)

  An airtight container, an electric element composed of a stator and a rotor, and a compression element driven by the electric element, and a compressor main body composed of the electric element and the compression element are viewed from the lower side in the airtight container. It is elastically supported via a support member, and comprises an impact reducing means between the compressor body and the sealed container, and the impact reducing means is between the compressor body or the sealed container. A compressor arranged with space.   2. The compressor according to claim 1, wherein an electric element is disposed in a lower portion of the compressor body, a compression element is provided on an upper side of the electric element, and an impact reducing unit is provided on the compression element side. .   The compressor according to claim 1 or 2, wherein the compressor is an inverter compressor that is driven at a plurality of revolutions, and the stator of the electric element provided in the compressor body is provided with a permanent magnet.   The compressor according to any one of claims 1 to 3, wherein the compression element is heavier than the electric element, and an impact reduction unit is provided on the compression element side.   The compressor according to any one of claims 1 to 4, wherein the impact reducing means is a member having a spring property attached to at least one of the compressor main body or the sealed container.   The compressor according to any one of claims 1 to 4, wherein the impact reducing means is arranged so that a gap between the compressor main body and the sealed container is smaller than other portions.   The compressor according to any one of claims 1 to 6, wherein the impact reducing means is provided between the compressor body and the sealed container in a substantially horizontal direction.   The compressor according to any one of claims 1 to 7, wherein the impact reducing means is provided between the compressor main body and the hermetic container in a substantially vertical direction, and is disposed on the uppermost portion of the compressor main body.   The compression element is a reciprocating compressor including a cylinder and a piston that reciprocates within the cylinder, and the impact reducing means is disposed on the cylinder side of the center of the compressor body in the reciprocating direction of the piston. The compressor according to any one of claims 1 to 8.   The compression element and the airtight container are elastically connected via the discharge capillary, and the impact reducing means compresses the compression tube on the side opposite to the mounting position of the discharge capillary on the compressor body with respect to the center line in the longitudinal direction of the compressor. The compressor as described in any one of Claim 1 to 8 arrange | positioned at the machine main body.   The support member is a suspension spring composed of a coil spring, and the impact reducing means is disposed on the compressor main body located substantially on the extension line in the direction in which the suspension spring is disposed with respect to the center of the compressor in a cross section viewed from above. The compressor according to any one of claims 1 to 8.   The support member is a suspension spring composed of a coil spring, and at least three or more suspensions are provided, and the suspension member is disposed on a compression element outside a virtual line connecting outer peripheries of the suspension springs in a cross section viewed from above. Item 11. The compressor according to any one of Items 1 to 10.   The compressor according to any one of claims 1 to 12, wherein the impact reducing means is a buffer member formed of a thin metal plate.   The impact reducing means is formed of a thin plate that is partly welded and fixed to the inner surface of the sealed container or the compressor body, and the other part is disposed in a state having a clearance from the inner surface of the sealed container or the fixing surface of the compressor body. The compressor according to claim 13, which is a buffer member.   The compressor according to claim 13, wherein the impact reducing means is fixed without providing a gap between the buffer member and the inner surface of the sealed container or the compressor body.   The compressor according to any one of claims 1 to 12, wherein the impact reducing means is a buffer member using a coil spring.   The compressor according to any one of claims 1 to 12, wherein the impact reducing means is a buffer member formed of a material having a larger attenuation rate than iron.   The compressor according to any one of claims 1 to 12, wherein the impact reducing means is a buffer member formed of a polymer material such as synthetic resin or rubber.   The support member is a suspension spring composed of a coil spring, and the impact reduction means further includes a support part impact reduction means provided in a support part formed of a synthetic resin, and the support part impact reduction means includes a suspension spring. The compressor according to any one of claims 1 to 18, wherein one end of the compressor is locked.   A compressor, a condenser, a decompressor, and an evaporator are provided in this order to form a series of refrigerant flow paths, and the refrigeration cycle according to any one of claims 1 to 19 A refrigeration system equipped with a compressor.   A storage room having a revolving door that opens and closes on the front surface has a box body arranged at the top, and a refrigerator equipped with the compressor according to any one of claims 1 to 19 on the top surface of the box body. .   The refrigerator according to claim 21, wherein a concave portion is formed on the top storage space side in the storage chamber over the top and back surfaces of the box body, and a compressor is mounted in the concave portion.

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