CN103717987B - Freezer - Google Patents

Abstract

The invention provides a kind of freezer (10), possess: have by the heat insulating box of the storeroom of heat insulation division (51); The door of closed storage room; With compressor (80).Further, the low-limit frequency that operates than compressor (80) of the intrinsic vibration number of the unit interval of door is low.Thus, such as, switched the operating frequency of compressor (80) by VFC, when by stock storage to door, also can prevent from resonating.In addition, for the vibration of compressor (80), the vibration that antivibrating parts just suppresses door can not be added, resonance can be prevented.

Description

Freezer

Technical field

The present invention relates to freezer, particularly the structure of the heat insulating box and door etc. of freezer.

Background technology

In recent years, from the view point of environment of preserving our planet, the energy-saving of freezer further develops, and is expected further to improve serviceability and storage property.

Such as, in order to the storage volume realizing the storeroom being configured in foot improves, the back part with the top portion in the storeroom of heat insulating box arranges recess, in the method (such as with reference to patent document 1) of the constituent apparatus of this recess storage freeze cycle.

Fig. 7 is sectional view that represent the structure of existing freezer 180, that watch from side.

Freezer 180 has: the outer container 102 forming the outer wall of heat insulating box 101; Form the interior case 103 of the storehouse inwall of heat insulating box 101; The polyurethane heat-barrier material 104 of filling foaming between outer container 102 and interior case 103.

Freezer 180 has refrigerating chamber 105, refrigerating chamber 106, vegetable compartment 107 successively from upper, and the front openings of refrigerating chamber 105 is provided with refrigerating chamber rotary door 108.

In addition, consider storage property and serviceability, be positioned at the refrigerating chamber 106 of below of central portion and the vegetable compartment 107 of heat insulating box 101, be provided with separately the drawer type (drawer – type) that can simply take out, cold chamber drawer formula door 109 and vegetable compartment drawer type door 112.

Heat insulating box 101 is provided with recess 120.Recess 120 is hollowly arranged on the end face back part from outer container upper surface 121 to the outer container back side 122 in the mode that the back part of refrigerating chamber 105 declines.

Recess 120 is closed by the left and right wall of heat insulating box 101 about it when front is watched, be formed as upward with the formation of the opening of back of the body side.The open portion of recess 120 is covered by upper plate 123 and the recess lid 125 that formed by the backboard 124 generally perpendicularly formed with upper plate 123.Recess lid 125 is fixed on heat insulating box 101 by screw etc. in the mode that can take off.

Compressor 131 and condenser 132 form freeze cycle.Compressor 131 and condenser 132 are configured to be accommodated in recess 120 together with mechanic chamber fan 133, are covered by recess lid 125.The upper plate 123 of recess lid 125 and backboard 124 are provided with the multiple air vents 134 for dispelling the heat.

In addition, be configured in the back part of refrigerating chamber 106 together with cooling fan 136 as the evaporimeter 135 of equipment forming freeze cycle.

By this formation, the vegetable compartment 107 as the storeroom of foot is configured to the storeroom that depth is deeper than other.

That is, when adopting above-mentioned formation, compressor 131 and condenser 132 etc. are accommodated in the upper rear portion of heat insulating box 101.Thus, receive compressor 131 with the lower backside at heat insulating box 101 and compare with the situation of condenser 132, can make the internal volume of vegetable compartment 107 more greatly and form deeper.In addition, even if high-pressure installation to be configured in the top of heat insulating box 101, also by increasing the storage weight to the vegetable compartment 107 of the storeroom as foot, the center of gravity of heat insulating box 101 entirety can be reduced, realizes stabilisation.

But, in this existing formation, the compressor 131 of one of the vibration generation source as freezer 180 is arranged on the top portion of heat insulating box.Thus, there is the easy problem of carrying out vibrating because of the vibration of compressor 131 of refrigerating chamber rotary door 108 as the high the top door of script frequency of utilization.

Since existing, even if when compressor 131 is arranged on the bottom of heat insulating box 101, the top door being configured in the top is positioned at the position higher than other door, therefore there is the problem of easily shake.With compressor 131 is configured in heat insulating box 101 bottom formation compared with, when compressor 131 is configured in the top of heat insulating box 101, the vibration of refrigerating chamber rotary door 108 may become more remarkable.

At this, use and switch to multiple rank (level) to carry out the VFC controlled that operates the operating frequency of compressor 131, set the situation that the consumes power of freezer 180 is reduced.In this case, when the low-limit frequency of compressor 131 is lower than the frequency of domestic power supply, such as 50Hz, the operating frequency of compressor 131 becomes identical with the intrinsic vibration number of the unit interval of refrigerating chamber rotary door 108, and in this case, refrigerating chamber rotary door 108 easily resonates.

Further, when stock can be received in refrigerating chamber 105 side of refrigerating chamber rotary door 108, according to the weight of stock, side's change that the intrinsic frequency to the refrigerating chamber rotary door 108 comprising stock is low, so the possibility that resonance occurs increases.

Prior art document

Patent document

Patent document 1: Japanese Unexamined Patent Publication 2001-99552 publication

Summary of the invention

The technical problem solved is wanted in invention

The present invention completes in view of this problem, and provide a kind of freezer, it is for the vibration of compressor, does not add the vibration that antivibrating parts etc. just can suppress door, can prevent resonance.

Freezer of the present invention possesses: have by the heat insulating box of the storeroom of heat insulation division; Close the door of described storeroom; And compressor, the intrinsic vibration number of the unit interval of described door is lower than the low-limit frequency of described compressor operation.

Thus, the intrinsic vibration number of the unit interval of the door of closed storage room is lower than making the low-limit frequency of compressor operation, so, such as switch the operating frequency of compressor by VFC, even if when door storage stock, also can prevent from resonating.

Thus, according to freezer of the present invention, for the vibration of compressor, do not add the vibration that antivibrating parts just can suppress door, resonance can be prevented.

Accompanying drawing explanation

Fig. 1 is the front elevation of the freezer in the first embodiment of the present invention.

Sectional view that Fig. 2 is the internal structure of the freezer represented in the first embodiment of the present invention, that watch from side.

Fig. 3 is the exploded perspective view of the heat insulating box of freezer in the first embodiment of the present invention.

Fig. 4 is the front elevation of the freezer in the second embodiment of the present invention.

Sectional view that Fig. 5 is the internal structure of the freezer represented in the second embodiment of the present invention, that watch from side.

Fig. 6 is the exploded perspective view of the heat insulating box of freezer in the second embodiment of the present invention.

Fig. 7 represents the structure of existing freezer, is the sectional view from side viewing.

Detailed description of the invention

Below, with reference to accompanying drawing, embodiments of the present invention are described.Wherein, the invention is not restricted to these embodiments.

(the first embodiment)

Fig. 1 is the front elevation of the freezer 10 in the first embodiment of the present invention, and Fig. 2 is sectional view that represent the internal structure of this freezer 10, that watch from side, and Fig. 3 is the exploded perspective view of the heat insulating box 51 of this freezer 10.

Freezer 10 possesses: have by the heat insulating box 51 of the storeroom of heat insulation division; The door of closed storage room; With compressor 80.In addition, the low-limit frequency that operates than compressor 80 of the intrinsic vibration number of the unit interval of door is low.

Freezer 10 possesses heat insulating box 51 in freezer main body 50.

Heat insulating box 51 has: case 52 in being formed by resin; The outer container 53 formed by the metal magnetic body of steel plate etc.; And between interior case 52 and outer container 53 filling heat-barrier material 54 and the thermal wall formed.

Heat insulating box 51 has front openings portion 51a.Formed by partition wall 55 and have the multiple by the storeroom of heat insulation division of refrigerating chamber 56, refrigerating chamber 57 successively from upper.

In addition, refrigerating chamber 56 is cooled remains refrigerated storage temperature band, and refrigerating chamber 57 is cooled remains cryogenic temperature band.

As shown in Figure 3, interior case 52 comprises interior case 52a and lower interior case 52b.In upper, case 52a forms face up and down in refrigerating chamber 56 and the inside, and front openings, in fact in box shape.In addition, lower interior case 52b forms face up and down and the inside of refrigerating chamber 57, front openings, in fact in box shape.

As shown in Figure 2, partition wall 55 comprises the lower surface of interior case 52a, the upper surface of lower interior case 52b and demarcation strip 55a.Demarcation strip 55a is arranged at before partition wall 55, is formed by the metal magnetic body of steel plate etc.The heat-barrier material 54 of heat insulating box 51 integratedly foam filling in the inner space of partition wall 55.

Demarcation strip 55a is arranged on the position identical with the foremost of outer container 53 on the fore-and-aft direction of heat insulating box 51, forms a part of front openings portion 51a.

In addition, refrigerating-chamber door 56a and the refrigerating chamber door 57a(door of storage room of front openings portion 51a is closed when refrigerating chamber 56 and refrigerating chamber 57 are provided with full cut-off separately).

As shown in Figure 1, the right side upper and lower side during front viewing of refrigerating-chamber door 56a and refrigerating chamber door 57a door is separately attached at heat insulating box 51 freely to rotate each via having the upper hinge 60 of turning cylinder, middle hinge 61 and lower hinge 62.

In addition, upper hinge 60 is installed on the upper end of heat insulating box 51, and lower hinge 62 is installed on the lower end of heat insulating box 51, and middle hinge 61 is installed on demarcation strip 55a.

As shown in Figure 2, each door of storage room with the face of heat insulating box 51 side when full cut-off and between front openings portion 51a, the mode in the space 63 in the longitudinal direction with about 5mm installs.Space 63 is configured with the pad (gasket) 64 with magnet, and it is configured in four limits up and down in the face of heat insulating box 51 side of each door of storage room.Utilize the magnetic force of pad 64, pad 64 can be adsorbed, be close to front openings portion 51a, so each storeroom can be sealed into substantial sealing state.

Pad 64 is the elastomeric elements of the hollow formed by the soft material of rubber etc.Thus, even if the distance of the fore-and-aft direction in space 63 changes a little, also can utilize the attractive holding force of the flexible of pad 64 and magnet, sealing can be carried out to each storeroom and keep.

As shown in Figure 1, in the present embodiment, refrigerating-chamber door 56a is identical on the width of heat insulating box 51 with the size of refrigerating chamber door 57a.But in the short transverse of heat insulating box 51, the open height of refrigerating chamber 56 is higher than the open height of refrigerating chamber 57.That is, the area as the area ratio refrigerating chamber door 57a of the refrigerating-chamber door 56a of the top door is large.

As shown in Figure 2, refrigerating-chamber door 56a and refrigerating chamber door 57a is the thermal wall being filled with heat-barrier material in inside.Refrigerating chamber door 57a is thicker than refrigerating-chamber door 56a, but refrigerating-chamber door 56a is heavier than refrigerating chamber door 57a.

The face of refrigerating chamber 56 side of refrigerating-chamber door 56a is provided with multiple door frame can receiving stock.Specifically, from upper successively with the mode in the vertical direction with suitable interval be configured with the smallclothes for receiving flavoring etc. smallclothes frame 70, for receiving the beverage frame 71 of beverage can etc. and the bottle stand 72 for the large part beverage of receiving PET bottle etc.

In addition, the intrinsic vibration number (hereinafter referred to as intrinsic frequency) comprising the unit interval of the door frame of refrigerating-chamber door 56a is 33Hz.

On the other hand, in the present embodiment, refrigerating chamber door 57a does not have door frame, and the intrinsic frequency of refrigerating chamber door 57a is 40Hz.

Heat insulating box 51 has the freeze cycle each storeroom cooling being remained set point of temperature, and compressor 80 forms a part for freeze cycle.

Compressor 80 is moved back and forth in cylinder by piston, carries out the reciprocating motion type compressor of the compression of cold-producing medium.Cold-producing medium as the freeze cycle comprising compressor 80 can use carbon hydro carbons (hydrocarbon-based) cold-producing medium, such as iso-butane.

Compressor 80, in order to reduce the consumed power of freezer main body 50, carries out by control part 90 VFC operating frequency of compressor 80 being switched to multiple rank, makes it operate.Control part 90 controls the running of compressor 80.

In addition, in the present embodiment, the low-limit frequency that compressor 80 runs is the 35Hz lower than the frequency (50Hz) of domestic power supply.

Compressor 80 and control part 90 are configured in Machine Room 100.Machine Room 100 is arranged on the lower concave part 51b of the inboard, bottom of heat insulating box 51.In addition, as shown in Figure 1, compressor 80 be configured in heat insulating box 51 front viewing time left and right directions on, be provided with each door of storage room hinge phase the same side (in the example of Fig. 1 be watch from front time right side, but be not limited to this example, as long as compressor 80 and hinge are arranged on phase the same side).

Below, the running of the freezer 10 formed as described above and effect are described.

First, when user inputs the domestic power supply of freezer main body 50, utilize the compressed action of compressor 80 and the cold-producing medium of HTHP of discharging circulates, while each storeroom cooling is remained the design temperature band of regulation in freeze cycle.

Now, control part 90, according to the situation of each storeroom, carries out the control switched from multiple rank, makes the operating frequency of compressor 80 become optimum value.In addition, control part 90 controls the running of compressor 80, makes the consumed power step-down of freezer main body 50.

Such as, when user have input domestic power supply at first, in storeroom disposable temperature when being accommodated with more stock etc., in storeroom higher than the temperature of regulation a lot of when, control part 90 makes compressor 80 operate with peak frequency.Afterwards, the step-down gradually of the temperature in storeroom, the operating frequency of compressor 80 is switched to low level by control part 90, finally to operate as the 35Hz of minimum operating frequency.

User can open refrigerating-chamber door 56a and freely takes out and put into the article being stored in each door frame.When the amount of the stock being accommodated in door frame increases, the intrinsic frequency of refrigerating-chamber door 56a entirety is to low direction consecutive variations.On the contrary, when the amount of the stock being accommodated in door frame reduces, the intrinsic frequency of refrigerating-chamber door 56a entirety is to high direction consecutive variations.But the intrinsic frequency under the state that stock do not received by door frame is 33Hz, so the intrinsic frequency of refrigerating-chamber door 56a entirety can not reach the 35Hz of the low-limit frequency as compressor 80.

On the other hand, the weight ratio refrigerating-chamber door 56a's of refrigerating chamber door 57a is lightweight, and the natural frequency ratio refrigerating-chamber door 56a's of refrigerating chamber door 57a is large.In the present embodiment, the intrinsic frequency of refrigerating chamber door 57a is the 40Hz larger than the 35Hz of the low-limit frequency as compressor 80.In addition, refrigerating chamber door 57a is not provided with door frame, so the intrinsic frequency of refrigerating chamber door 57a entirety does not change, as long as control part 90 does not make compressor 80 with 40Hz running, then refrigerating chamber door 57a does not resonate.

In addition, when refrigerating chamber door 57a also arranges door frame, the intrinsic frequency of the refrigerating chamber door 57a when storage amount of mensuration stock becomes maximum, in the scope of the 40Hz of the intrinsic frequency when not receiving stock from this frequency to the door frame as refrigerating chamber door 57a, does not make compressor 80 operate.Thereby, it is possible to there is not the resonance of refrigerating chamber door 57a.

In addition, in the present embodiment, the low-limit frequency during running of compressor 80 is 35Hz.But, the invention is not restricted to this example.The operating frequency of compressor 80 is reduced further, the consumed power of freezer main body 50 can be reduced.

That is, when the deviation range of the weight that can make refrigerating-chamber door 56a narrows, the low-limit frequency during running of compressor 80 can be made to be 34Hz.Further, large etc. by refrigerating-chamber door 56a is established, when can increase its weight, the intrinsic frequency of refrigerating-chamber door 56a can be reduced.Be accompanied by this, also can reduce the low-limit frequency during operation of compressor 80 further.

In addition, in the freezer 10 of present embodiment, be integrally formed partition wall 55 and interior case 52, so, the gap between partition wall 55 and heat insulating box 51 can be eliminated completely.When there is gap between partition wall 55 and heat insulating box 51, when being added shake by heat insulating box such as compressor 80 grade 51, produce vibration in small clearance portion, sometimes produce Quiver.But, in the formation of the freezer 10 of present embodiment, this Quiver can not be produced.

Further, between partition wall 55 and heat insulating box 51, there is gap, heat insulating box 51 also can be caused easily to deform.Particularly, as the freezer 10 of present embodiment, when the refrigerating-chamber door 56a being configured in uppermost position is provided with door frame, not only needs to consider the distortion after just the producing of heat insulating box 51, also need to consider the distortion of user when door frame storage stock.

In the present embodiment, partition wall 55 and interior case 52 are integrally formed, and, the heat-barrier material 54 in partition wall 55 and the heat-barrier material 54 foaming filling of heat insulating box 51.Thus, the rigidity of heat insulating box 51 increases, suppressed to the Vibration propagation of refrigerating-chamber door 56a, and can obtain the strength durable of the door frame storage stock for refrigerating-chamber door 56a.

In addition, in the present embodiment, interior case 52 is separately formed upper interior case 52a and lower interior case 52b, the possibility that the rigidity of heat insulating box 51 reduces can be considered thus.But, interior case 52a and lower interior case 52b and heat-barrier material 54 are close to, the structure not making rigidity reduce can be formed thus.

In addition, in the switching mechanism, hermetically-sealed construction of refrigerating-chamber door 56a, also need to consider to reduce small gap based on same reason.

First, about switching mechanism, except rotary type, also have drawer type door, but general in drawer type, between heat insulating box 51 and refrigerating-chamber door 56a, there is small gap more.On the other hand, when adopting rotary type, each hinge and refrigerating-chamber door 56a almost seamlessly can be linked, so preferably.Further, the frequency of utilization as the refrigerating-chamber door 56a of the door in the top portion is the highest, so adopt rotary type for user, serviceability is good.

In addition, in present embodiment, on left and right directions when compressor 80 being configured in the front viewing of heat insulating box 51, identical with the hinge being provided with refrigerating-chamber door 56a side.Thus, the vibration of compressor 80 is propagated from the hinge side of refrigerating-chamber door 56a to refrigerating-chamber door 56a, so can suppress the vibration of refrigerating-chamber door 56a.

Then, for hermetically-sealed construction, need the heat insulating box 51 when absorbing manufacture deviation, cooling and the contraction of each door of storage room, and space 63 sealing is remained the air-tight state of essence.Therefore, preferably elastomeric element is used as pad 64.By using elastomeric element, the Vibration propagation from heat insulating box 51 to each door of storage room can be suppressed simultaneously.

As mentioned above, in the freezer 10 of present embodiment, partition wall 55 and interior case 52 do not have seam, can eliminate the small gap in parts coupling part each other, so the vibration of the heat insulating box 51 that the vibration because of compressor 80 can be suppressed to cause produces.

In addition, be integrally formed by the heat-barrier material 54 in heat insulating box 51 with the heat-barrier material 54 of partition wall 55, thus, the rigidity of heat insulating box 51 increases, and can suppress the Vibration propagation of compressor 80.

And, the low-limit frequency that the intrinsic vibration number being arranged on the unit interval of the refrigerating-chamber door 56a as the top door in the top portion operates than compressor 80 is low, so, the operating frequency of compressor 80 is switched by VFC, even if when each door frame storage stock, also can prevent refrigerating-chamber door 56a from resonating.

In addition, the weight as the refrigerating-chamber door 56a of the top door is configured to the Heavy Weight than refrigerating chamber door 57a, so easily can reduce the intrinsic frequency of the top door.

In addition, in the present embodiment, utilizing upper hinge 60 and middle hinge 61 that the upper and lower side part on the right side of refrigerating-chamber door 56a is configured to can opening and closing freely to rotate, and hinge in downside 61 is fixed on partition wall 55.Utilize this formation, compared with being configured to situation about freely pulling out with refrigerating-chamber door 56a, can heat insulating box 51 and the gap of the linking part of refrigerating-chamber door 56a be set narrower, can suppress to produce vibration at linking part.

In addition, sealing as pad 64 couples of refrigerating-chamber door 56a of elastomeric element and the space 63 of heat insulating box 51 by utilizing, the Vibration propagation from heat insulating box 51 to refrigerating-chamber door 56a can be suppressed, the vibration of refrigerating-chamber door 56a can be suppressed.

(the second embodiment)

Then, the freezer 20 in the second embodiment of the present invention is described.

Fig. 4 is the front elevation of the freezer 20 in the second embodiment of the present invention, and Fig. 5 is sectional view that represent the internal structure of this freezer 20, that watch from side, and Fig. 6 is the exploded perspective view of the heat insulating box 201 of this freezer 20.

The freezer 20 of present embodiment is compared with the freezer 10 described in the first embodiment, and difference is that the top having three storerooms and compressor 230 is accommodated in heat insulating box 201 is inboard.

Freezer 20 possesses heat insulating box 201 in freezer main body 200.

Heat insulating box 201 has: case 202 in being formed by resin; The outer container 203 formed by the metal magnetic body of steel plate etc.; And between interior case 202 and outer container 203 filling heat-barrier material 204 and the thermal wall formed.

Heat insulating box 201 has front openings portion 201a.Formed by upper partition wall 205 and lower partition wall 206 and have the multiple by the storeroom of heat insulation division of refrigerating chamber 207, vegetable compartment 208, refrigerating chamber 209 successively from upper.

In addition, refrigerating chamber 207 and vegetable compartment 208 are cooled and remain refrigerated storage temperature band, and refrigerating chamber 209 is cooled remains cryogenic temperature band.

As shown in Figure 6, the face up and down in each storeroom of interior case 202 and the inside form, and are the box shape of the essence of front openings, from upper comprise successively upper interior case 202a, in case 202b, lower interior case 202c.

As shown in Figure 5, upper partition wall 205 comprise interior case 202a lower surface, in the upper surface of case 202b and upper demarcation strip 205a.Upper demarcation strip 205a is arranged at before upper partition wall 205, is formed by the metal magnetic body of steel plate etc.

In addition, lower partition wall 206 comprise in the lower surface of case 202b, the upper surface of lower interior case 202c and lower demarcation strip 206a.Lower demarcation strip 206a is arranged at before lower partition wall 206, is formed by the metal magnetic body of steel plate etc.

The heat-barrier material 204 of heat insulating box 201 is filled with at upper partition wall 205 and the respective inner space foaming of lower partition wall 206.

Upper demarcation strip 205a is arranged on position identical with the foremost of outer container 203 on the fore-and-aft direction of respective heat insulating box 201 with lower demarcation strip 206a, forms a part of front openings portion 201a.

As shown in Figure 4, refrigerating chamber 207 is provided with the right door 207a of the refrigerating chamber closing front openings portion 201a when full cut-off and refrigerating chamber left-hand door 207b.

In addition, close the vegetable compartment door 208a of front openings portion 201a when vegetable compartment 208 is provided with full cut-off, when refrigerating chamber 209 is provided with full cut-off, close the refrigerating chamber door 209a of front openings portion 201a.

Refrigerating chamber right door 207a and refrigerating chamber left-hand door 207b is configured in identical height in the short transverse of heat insulating box 201, is separated in the mode of the side that keeps left compared with the center of the left and right directions when watching heat insulating box 201 with front.Thus, the area of the area ratio refrigerating chamber left-hand door 207b of refrigerating chamber right door 207a is large.

The upper and lower side on refrigerating chamber right door 207a, vegetable compartment door 208a and refrigerating chamber door 209a right side separately is in turn attached at heat insulating box 201 by upper right hinge 210, middle right hinge 211, middle hinge 212 and lower hinge 213 in the mode that can freely rotate from upper.

In addition, the upper and lower side on the left of it is attached at heat insulating box 201 by upper left hinge 214 and middle left hinge 215 in the mode that can freely rotate by refrigerating chamber left-hand door 207b.

Upper right hinge 210 and upper left hinge 214 are installed on the upper end of heat insulating box 201, and lower hinge 213 is installed on the lower end of heat insulating box 201.In addition, middle right hinge 211 and middle left hinge 215 are installed on demarcation strip 205a, and middle hinge 212 is installed on lower demarcation strip 206a.

As shown in Figure 5, each door of storage room with the face of its heat insulating box 201 side when full cut-off and between front openings portion 201a, the mode in the space 216 in the longitudinal direction with about 5mm installs.Space 216 is configured with the pad 217 with magnet, and it is configured in four limits up and down in the face of heat insulating box 201 side of each door of storage room.Utilize the magnetic force of pad 217, make pad 217 be adsorbed in front openings portion 201a, can be close to, so each storeroom can be sealed into the state of assisting in substantially sealing.

Pad 217 is the elastomeric elements of the hollow formed by the soft material of rubber etc.Thus, even if the distance of the fore-and-aft direction in space 216 changes a little, also can utilize the attractive holding force of the flexible of pad 217 and magnet, sealing can be carried out to each storeroom and keep.

As shown in Figure 4, in the present embodiment, during from front viewing freezer main body 200, in each door of storage room, the area of refrigerating chamber right door 207a is maximum.

As shown in Figure 5, each door of storage room is configured to the thermal wall being filled with heat-barrier material in inside.The thermal wall inside of refrigerating chamber right door 207a is configured with proportion and vacuum heat insulation material 207c that pyroconductivity little more great than the ratio of the heat-barrier material of other door of storage room, and in each door of storage room, 207a is the heaviest for refrigerating chamber right door.

The face of refrigerating chamber 207 side of refrigerating chamber right door 207a is provided with multiple door frame can receiving stock.Specifically, from upper in turn with the mode in the vertical direction with suitable interval be configured with the smallclothes for receiving flavoring etc. smallclothes frame 220, for receiving the beverage frame 221 of beverage can etc. and the bottle stand 222 for the large part beverage of receiving PET bottle etc.

In addition, present embodiment each door frame, the viewing of the front of heat insulating box 201 time the width of left and right directions less than each door frame of the freezer 10 described in the first embodiment.

In addition, the intrinsic frequency comprising the door frame of the right door 207a of refrigerating chamber is 33Hz.

In present embodiment, other each door of storage room of refrigerating chamber right door 207a does not have door frame, and the intrinsic frequency of each door of storage room is 40 ~ 45Hz.

Heat insulating box 201 has the freeze cycle each storeroom cooling being remained set point of temperature, and compressor 230 forms a part for freeze cycle.

Compressor 230 is moved back and forth in cylinder by piston, carries out the reciprocating motion type compressor of the compression of cold-producing medium.Cold-producing medium as the freeze cycle comprising compressor 230 can use carbon hydrocarbon refrigerant, such as iso-butane.

Compressor 230, in order to reduce the consumes power of freezer main body 200, carries out by control part 240 VFC operating frequency of compressor 230 being switched to multiple rank, makes it operate.Control part 240 controls the running of compressor 230.

In addition, in the present embodiment, the low-limit frequency that compressor 230 operates is the 35Hz lower than the frequency (such as 50Hz) of domestic power supply.

Compressor 230 and control part 240 are configured at the Machine Room 250 that the upper recess 201b in the inboard, top of heat insulating box 201 is arranged.In addition, compressor 230 be configured at when the front of heat insulating box 201 is watched left and right directions on, refrigerating chamber right door 207a side (right side).

Below, the operation of the freezer 20 formed as described above and effect are described.

First, when user inputs the domestic power supply of freezer main body 200, utilize the compressed action of compressor 230 and the cold-producing medium of HTHP of discharging circulates, while each storeroom cooling is remained the design temperature band of regulation in freeze cycle.

Now, control part 240, according to the situation of each storeroom, carries out the control switched from multiple rank, makes the operating frequency of compressor 230 become optimum value.In addition, control part 240 controls the running of compressor 230, the consumes power of freezer main body 200 is become minimum.

Such as, when user have input domestic power supply at first, in storeroom disposable temperature when being accommodated with more stock etc., in storeroom higher than the temperature of regulation a lot of when, control part 240 makes compressor 230 operate with peak frequency.Then, the step-down gradually of the temperature in storeroom, and the operating frequency of compressor 230 is switched to low level by control part 240, finally to operate as the 35Hz of minimum operating frequency.

User can open refrigerating chamber right door 207a and freely takes out and put into the article being stored in each door frame.When the amount of the stock being accommodated in door frame increases, the intrinsic frequency of refrigerating chamber right door 207a entirety is to low direction consecutive variations.On the contrary, when the amount of the stock being accommodated in door frame reduces, the intrinsic frequency of refrigerating chamber right door 207a entirety is to high direction consecutive variations.But the intrinsic frequency under the state that stock do not received by door frame is 33Hz, so the intrinsic frequency of refrigerating chamber right door 207a entirety can not reach the 35Hz of the low-limit frequency as compressor 230.

On the other hand, the weight ratio refrigerating chamber right door 207a's of other door of storage room is lightweight, and the natural frequency ratio refrigerating chamber right door 207a's of other door of storage room is large.In the present embodiment, the intrinsic frequency of other door of storage room is made to be the 40 ~ 45Hz larger than the 35Hz of the low-limit frequency as compressor 230.In addition, be not provided with door frame at other door of storage room, so the intrinsic frequency of other door of storage room does not change, as long as control part 240 does not make compressor 230 with 40 ~ 45Hz running, then other door of storage room does not resonate.That is, control part 240 makes compressor 230 with the running of the operating frequency of the intrinsic vibration number of the unit interval except other door of storage room.

In addition, when other door of storage room also arranges door frame, the intrinsic vibration number of the mean unit time of each door of storage room when storage quantitative change of mensuration stock is maximum, in the scope of 40 ~ 45Hz of the intrinsic frequency when not receiving stock from this frequency to the door frame as each door of storage room, compressor 230 is not made to operate.Thereby, it is possible to there is not the resonance of other door of storage room.

In addition, in the present embodiment, the low-limit frequency during running of compressor 230 is 35Hz.But, the invention is not restricted to this example.The operating frequency of low compressor 230 is set, the consumed power of freezer main body 200 can be reduced.

Such as, when the deviation range of the weight that can make the right door 207a of refrigerating chamber narrows, the low-limit frequency during running of compressor 230 can be made to be 34Hz.Further, large etc. by right for refrigerating chamber door 207a is established, when can increase its weight, the intrinsic frequency of the right door 207a of refrigerating chamber can be reduced.Be accompanied by this, also can reduce the low-limit frequency during running of compressor 230 further.In addition, in the present embodiment, by using vacuum heat insulation material 207c, increasing the weight of the right door 207a of refrigerating chamber, reducing the intrinsic frequency of the right door 207a of refrigerating chamber.

Further, in the present embodiment, the area of refrigerating chamber right door 207a is made to be configured to maximum.Thus, as the vacuum heat insulation material 207c using other the pyroconductivity of heat-barrier material of door of storage room of thermal conductivity ratio little, with be applicable to other door of storage room situation compared with, be applicable to the right door 207a of refrigerating chamber, the heat that can invade in heat insulating box 201 reduces.When reducing the heat invaded in heat insulating box 201, the time ratio that compressor 230 is operated with low-limit frequency increases, so reduce the intrinsic vibration number of the right door 207a of refrigerating chamber, very helpful to the reduction of the consumes power of freezer main body 200.

In addition, in the freezer 20 of present embodiment, upper partition wall 205 and lower partition wall 206 and interior case 202 are integrally formed, so, upper partition wall 205 and the gap between lower partition wall 206 and heat insulating box 201 can be eliminated completely.Upper partition wall 205 and when there is gap between lower partition wall 206 and interior case 202, when adding shake from compressor 230 grade to heat insulating box 201, produces vibration in small clearance portion, sometimes produces Quiver.But, in the formation of the freezer 20 of present embodiment, this Quiver can not be produced.

Further, upper partition wall 205 and there is gap between lower partition wall 206 and interior case 202, also can make heat insulating box 201 easily deform.

Particularly, as the freezer 20 of present embodiment, when the right door 207a of refrigerating chamber being configured in the top door of uppermost position is provided with door frame, not only need to consider the distortion after just the producing of heat insulating box 201, also need to consider the distortion of user when door frame storage stock.

In the present embodiment, be integrally formed upper partition wall 205 and interior case 202, and, the heat-barrier material 204 in foaming filling upper partition wall 205 and the heat-barrier material 204 of heat insulating box 201.Thus, the rigidity of heat insulating box 201 increases, suppressed to the Vibration propagation of refrigerating chamber right door 207a, and can obtain the strength durable of the door frame storage stock for the right door 207a of refrigerating chamber.

In addition, in the present embodiment, interior case 202 is separately formed upper in case 202a and in case 202b and lower interior case 202c, the possibility that the rigidity of heat insulating box 201 reduces can be considered thus.But, respective interior case and heat-barrier material 204 are close to, the structure not making rigidity reduce can be formed thus.

In addition, when the degree of vibration, rigidity can be allowed, other the parts different from interior case 202 can be utilized to form lower partition wall 206.In this case, the quantity of interior case 202 reduces (in can being become by an interior box-shaped case 202b and lower interior case 202c), so, can plant produced be improved, the generation of the unfavorable condition revealed from the part of lower partition wall 206 when the foam filling of heat-barrier material 204 can be suppressed.

In addition, in the switching mechanism, hermetically-sealed construction of the right door 207a of refrigerating chamber, also need to consider to reduce small gap based on same reason.

First, about switching mechanism, except rotary type, also have drawer type door, but general in drawer type door, between heat insulating box 201 and refrigerating chamber right door 207a, there is small gap more.On the other hand, when adopting rotary type, each hinge and the right door 207a of refrigerating chamber can almost seamlessly be linked, so preferably.Further, as the refrigerating chamber right door 207a of the top door in the top portion and the frequency of utilization of refrigerating chamber left-hand door 207b the highest, so adopt rotary type for user, easy to use.

In addition, for vegetable compartment door 208a, refrigerating chamber door 209a, when not having the problem vibrated, for the size of heat insulating box 201, drawer type is easy to use sometimes.

In addition, in the present embodiment, on left and right directions when compressor 230 being configured in the front viewing of heat insulating box 201, refrigerating chamber right door 207a side (Fig. 4).Thus, the vibration of compressor 230 is preferentially propagated to refrigerating chamber right door 207a side, thus can rejection ratio refrigerating chamber right door 207a light, the vibration of refrigerating chamber left-hand door 207b.In addition, the invention is not restricted to this example, door side heavier on left and right directions when also compressor 230 can be configured in the front viewing of heat insulating box 201.

Then, for hermetically-sealed construction, the heat insulating box 201 when absorbing manufacture deviation, cooling and the contraction of each door of storage room is needed, while space 216 to be sealed the air-tight state remaining essence.Therefore, preferably elastomeric element is used as pad 217.By using elastomeric element, the Vibration propagation from heat insulating box 201 to each door of storage room can be suppressed simultaneously.

In addition, in the present embodiment, top compressor 230 being configured in heat insulating box 201 is inboard, so, compared with the freezer 10 of the first embodiment, can the depth of the storeroom of bottom, such as vegetable compartment 208 be arranged wider.On the other hand, in freezer 20, the depth of the inboard, top of refrigerating chamber 207 is narrow, but the hand that this part is user is difficult to the space of the serviceability difference arrived at, so do not make the serviceability of user be deteriorated.

As mentioned above, in the freezer 20 of present embodiment, there is no the seam of partition wall 205 and interior case 202, the small gap in parts coupling part each other can be eliminated, so the vibration of the heat insulating box 201 that the vibration because of compressor 230 can be suppressed to cause produces.

In addition, the heat-barrier material 204 in heat insulating box 201 and the heat-barrier material 204 of upper partition wall 205 are integrally formed, and thus, the rigidity of heat insulating box 201 increases, and can suppress the Vibration propagation of compressor 230.

Further, the low-limit frequency that the intrinsic vibration number being arranged on the unit interval of the right door of the refrigerating chamber as the top door 207a in the top portion operates than compressor 230 is low.Thus, switched the operating frequency of compressor 230 by VFC, even if when each door frame storage stock, also can prevent the right door 207a of refrigerating chamber from resonating.

In addition, at inboard, the top of heat insulating box 201 configuration compressor 230, can the depth of the vegetable compartment 208 of the storeroom as bottom be arranged wider thus.

In addition, make other the Heavy Weight of door of storage room of weight ratio of the right door 207a of refrigerating chamber, so that easily reduce the top and be configured with the intrinsic frequency of the door of compressor 230 side.

In addition, in the present embodiment, the upper and lower side part on right side when utilizing upper right hinge 210 and middle right hinge 211 that the front of the right door 207a of refrigerating chamber is watched is configured to can opening and closing freely to rotate, and hinge 211 right in downside is fixed on upper partition wall 205.By this formation, compared with being configured to situation about freely pulling out with the right door 207a of refrigerating chamber, can the gap of the linking part of heat insulating box 201 and refrigerating chamber right door 207a being set narrower, can suppress to produce vibration at linking part.

In addition, seal as the right door 207a of pad 217 pairs of refrigerating chambers of elastomeric element and the space 216 of heat insulating box 201 by utilizing, the Vibration propagation from heat insulating box 201 to the right door 207a of refrigerating chamber can be suppressed, the vibration of the right door 207a of refrigerating chamber as the top door can be suppressed.

In addition, when being watched in the front of heat insulating box 201 by the door of storage room of the refrigerating chamber 207 as the top door, be split up into the right door 207a of refrigerating chamber and refrigerating chamber left-hand door 207b in the lateral direction, at heavy side's refrigerating chamber right door 207a side configuration compressor 230.Thus, the right door 207a of refrigerating chamber that the vibration of compressor 230 is preferentially difficult to that transmit, a heavy side to vibration propagates, and can suppress the vibration of the refrigerating chamber left-hand door 207b of a light side.

In addition, in each embodiment, use heat insulating box to be illustrated by the heat insulation example being divided into multiple storeroom, but freezer of the present invention is not limited to this example.Such as, also can be applicable to possess and only there is one by the freezer of the heat insulating box of the storeroom of heat insulation division.In this case, make the intrinsic vibration number of the unit interval of the door of this storeroom closed lower than the low-limit frequency of compressor operation, same resonance preventing effectiveness can be obtained thus.

In addition, for the freezer possessing the heat insulating box with multiple storeroom, for the door beyond the door of the top, also make the intrinsic vibration number of the unit interval of the door of this storeroom closed lower than the low-limit frequency of compressor operation, same resonance preventing effectiveness can be obtained.

In addition, in each embodiment, illustrate the example that bottom is inboard or top is inboard compressor 80,230 being configured in heat insulating box 51,201, but the invention is not restricted to these examples.Even if when compressor 80,230 is configured in any position of heat insulating box 51,201, low by the low-limit frequency making the intrinsic vibration number of the unit interval of the door of closed storage room operate than compressor 80,230, same resonance preventing effectiveness can be obtained.

In addition, in each embodiment, use the top partition wall that is at least configured in the top and interior case is integrally formed, the example of the heat-barrier material foaming filling of heat-barrier material in the partition wall of the top and heat insulating box is illustrated, but the invention is not restricted to this example.Such as, even if when partition wall and interior case are not integrally formed, by being configured to the relation meeting the intrinsic frequency of above-mentioned door and the minimum operating frequency of compressor, the resonance of door can also be prevented.

Industrial utilizability

As mentioned above, according to the present invention, for the vibration of compressor, do not add antivibrating parts etc., do not increase cost, assembling procedure, just can suppress the vibration of door, prevent resonance.Thus, the present invention can not only be applicable to freezer, also can be applicable to other freezer, moist closet etc.

Description of reference numerals

10,20 freezers

50,200 freezer main bodys

51,201 heat insulating boxes

51a, 201a front openings portion

51b lower concave part

52, case in 202

Case in 52a, 202a are upper

Case under 52b, 202c

53,203 outer containers

55,205 heat-barrier materials

55 partition walls

55a demarcation strip

56,207 refrigerating chambers

56a refrigerating-chamber door

57,209 refrigerating chambers

57a, 209a refrigerating chamber door

60 upper hinges

61, hinge in 212

62,213 times hinges

63,216 spaces

64,217 pads

70,220 smallclothes framves

71,221 beverage frames

72,222 bottle stands

80,230 compressors

90,240 control parts

100,250 Machine Rooms

201b upper recess

Case in 202b

205 upper partition walls

The upper demarcation strip of 205a

206 lower partition walls

Demarcation strip under 206a

The right door of 207a refrigerating chamber

207b refrigerating chamber left-hand door

207c vacuum heat insulation material

208 vegetable compartment

208a vegetable compartment door

210 upper right hinges

Right hinge in 211

214 upper left hinges

Left hinge in 215

Claims (9)

1. a freezer, is characterized in that, comprising:

Have by the heat insulating box of the storeroom of heat insulation division;

Close the door of described storeroom; With

Compressor,

The intrinsic vibration number of the unit interval of described door is lower than the low-limit frequency of described compressor operation.

2. freezer as claimed in claim 1, is characterized in that, comprising:

By the described heat insulating box heat insulation partition wall being divided into multiple described storeroom in the vertical direction; With

Close the multiple described door of described multiple storeroom respectively,

In described multiple door, closed configuration is lower than the low-limit frequency of described compressor operation at the intrinsic vibration number of the described unit interval of the top door of the described storeroom of the top.

3. freezer as claimed in claim 2, is characterized in that:

Be provided with multiple described partition wall,

Described heat insulating box is foam filling heat-barrier material between outer container and interior case,

Partition wall and the described interior case of at least the top in described multiple partition wall form as one,

Heat-barrier material in heat-barrier material in the partition wall of described the top and described heat insulating box is integrated by foam filling.

4. freezer as claimed in claim 2 or claim 3, is characterized in that:

Described compressor is configured with in the inboard, top of described heat insulating box.

5. freezer as claimed in claim 2 or claim 3, is characterized in that:

Described the top door is than other door weight.

6. freezer as claimed in claim 3, is characterized in that:

Described the top door is to be opened/closed, and the top and the bottom of any one end, left and right when wherein this is watched in front can freely be rotated by a pair hinge,

The hinge of the downside in described a pair hinge is fixed on the partition wall of described the top.

7. freezer as claimed in claim 2 or claim 3, is characterized in that:

Have the elastomeric element of the space sealing between described the top door and described heat insulating box.

8. freezer as claimed in claim 2 or claim 3, is characterized in that:

Described the top door, the left and right directions when the front of described heat insulating box is watched is divided into left-hand door and You Men,

Described compressor is configured with in the mode of the door of the heavier side in described left-hand door and described right door.

9. freezer as claimed in claim 5, is characterized in that:

There is the control part of the running controlling described compressor,

Described control part with except described other unit interval intrinsic vibration number except operating frequency make described compressor operation.