CN110513950A - Reinforcement unit, reinforcement structure and refrigeration equipment - Google Patents

Reinforcement unit, reinforcement structure and refrigeration equipment Download PDF

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Publication number
CN110513950A
CN110513950A CN201910828938.5A CN201910828938A CN110513950A CN 110513950 A CN110513950 A CN 110513950A CN 201910828938 A CN201910828938 A CN 201910828938A CN 110513950 A CN110513950 A CN 110513950A
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CN
China
Prior art keywords
bottom plate
supporter
connecting portion
backboard
reinforcement unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910828938.5A
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Chinese (zh)
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CN110513950B (en
Inventor
魏建波
李宗照
许婷婷
王贵云
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Hefei Jing Hong Electrical Co Ltd
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Hefei Jing Hong Electrical Co Ltd
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Application filed by Gree Electric Appliances Inc of Zhuhai, Hefei Jing Hong Electrical Co Ltd filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201910828938.5A priority Critical patent/CN110513950B/en
Publication of CN110513950A publication Critical patent/CN110513950A/en
Application granted granted Critical
Publication of CN110513950B publication Critical patent/CN110513950B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00General constructional features

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Refrigerator Housings (AREA)

Abstract

The present invention relates to a kind of reinforcement unit, reinforcement structure and refrigeration equipments, reinforcement unit is applied to refrigeration equipment, refrigeration equipment includes backboard and bottom plate, bottom plate is oppositely arranged with backboard interval, reinforcement unit includes the supporter with opposite both ends, the both ends of supporter are respectively provided with first connecting portion and second connecting portion, and first connecting portion is fixedly connected with bottom plate, and second connecting portion is fixedly connected with backboard.By the way that the first connecting portion of the supporter of above-mentioned reinforcement unit is fixedly connected with bottom plate, the second connecting portion of supporter is fixedly connected with backboard, the intensity that bottom plate can effectively be reinforced, a part of pressure suffered by bottom plate is transmitted on supporter, reduces the deformation extent of bottom plate.In addition, in the carrying engineering of refrigeration equipment, since refrigeration equipment may shake down in the vertical direction or fall on lower position from higher position, supporter can also reduce other components such as compressor and evaporating pan to the impact dynamics of bottom plate, reduce the deformation extent of bottom plate.

Description

Reinforcement unit, reinforcement structure and refrigeration equipment
Technical field
The present invention relates to technical field of refrigeration equipment, more particularly to a kind of reinforcement unit, reinforcement structure and refrigeration equipment.
Background technique
Big volume, multi-functional refrigerator are more and more, and with the variation of refrigerator volume and function, the weight of refrigerator also becomes It is increasing.The bigger load bearing stength requirement to refrigerator of the weight of refrigerator is higher, and especially in the bottom plate position of refrigerator, bottom plate is wanted The weight of compressor and other attachmentes is born, the increase of refrigerator weight leads to refrigerator bottom plate appearance so that refrigerator bottom slab stress becomes larger It is also easy to produce deformation.
Summary of the invention
Based on this, it is necessary to provide a kind of reinforcement unit, reinforcement structure and refrigeration equipment, can reduce the bottom of refrigeration equipment The deformation extent of plate.
Its technical solution is as follows:
A kind of reinforcement unit is applied to refrigeration equipment, and the refrigeration equipment includes backboard and bottom plate, the bottom plate with it is described Backboard interval is oppositely arranged, and the reinforcement unit includes the supporter with opposite both ends, the both ends difference of the supporter With first connecting portion and second connecting portion, the first connecting portion is fixedly connected with the bottom plate, the second connecting portion with The backboard is fixedly connected.
In refrigeration equipment, it is main stressed member that bottom plate, which is mainly used for installing the parts such as compressor and evaporating pan, back The back of refrigeration equipment is arranged in plate, and backboard is oppositely arranged with bottom plate interval.By by the supporter of above-mentioned reinforcement unit First connecting portion is fixedly connected with the bottom plate, and the second connecting portion of supporter is fixedly connected with the backboard, can be effectively The intensity for reinforcing bottom plate, a part of pressure suffered by bottom plate is transmitted on supporter, the deformation extent of bottom plate is reduced.In addition, In the carrying engineering of refrigeration equipment, due to refrigeration equipment may in the vertical direction it is lower shake or from higher position fall on compared with Lower position, supporter can also reduce other components such as compressor and evaporating pan to the impact dynamics of bottom plate, reduce the change of bottom plate Shape degree.
Technical solution is illustrated further below:
The first connecting portion is the first pilot hole being opened on the supporter, institute in one of the embodiments, It states second pilot hole of first pilot hole for the bottom plate to be oppositely arranged, first pilot hole and second pilot hole For being worn for the first fastener.
First pilot hole is kidney slot in one of the embodiments,.
The second connecting portion is the third pilot hole being opened on the supporter, institute in one of the embodiments, It states fourth pilot hole of the third pilot hole for the backboard to be oppositely arranged, the third pilot hole and the 4th pilot hole For being worn for the second fastener.
The third pilot hole is kidney slot in one of the embodiments,.
The third pilot hole is equipped with notch close to the side of the first connecting portion in one of the embodiments,.
The reinforcement unit further includes intensive aspect in one of the embodiments, and the intensive aspect and the supporter connect It connects, and the intensive aspect and the supporter are arranged in angle.
The intensive aspect is vertically arranged with the supporter in one of the embodiments,.
The intensive aspect is equipped with the first limiting section close to one end of the first connecting portion in one of the embodiments, First limiting section and the supporter interval are arranged, and first limiting section and the supporter cooperatively form for First position limiting structure of the bottom plate limit cooperation;
And/or the intensive aspect is equipped with the second limiting section, second limiting section close to one end of the second connecting portion It is arranged with the supporter interval, and second limiting section is cooperatively formed with the supporter for matching with backboard limit The second position limiting structure closed.
The intensive aspect is two in one of the embodiments, and two intensive aspects are respectively arranged at the support The two sides of body.
The supporter is an integral molding structure with the intensive aspect in one of the embodiments,.
The shape of the supporter is long strip shape in one of the embodiments,.
The technical program additionally provides a kind of reinforcement structure, comprising: bottom plate;Backboard, the backboard and the bottom plate interval It is oppositely arranged;And reinforcement unit as described above, the first connecting portion are fixedly connected with the bottom plate, the second connecting portion It is fixedly connected with the backboard.
The backboard is opposite with the edge interval of the bottom plate in one of the embodiments, the first connecting portion with The edge of the bottom plate is fixedly connected.
The technical program additionally provides a kind of refrigeration equipment, comprising: bottom plate;Backboard, the backboard and the bottom plate interval It is oppositely arranged;And reinforcement unit as described above, the first connecting portion are fixedly connected with the bottom plate, the second connecting portion It is fixedly connected with the backboard.
In refrigeration equipment, it is main stressed member that bottom plate, which is mainly used for installing the parts such as compressor and evaporating pan, back The back of refrigeration equipment is arranged in plate, and backboard is oppositely arranged with bottom plate interval.By by the supporter of above-mentioned reinforcement unit First connecting portion is fixedly connected with the bottom plate, and the second connecting portion of supporter is fixedly connected with the backboard, can be effectively The intensity for reinforcing bottom plate, a part of pressure suffered by bottom plate is transmitted on supporter, the deformation extent of bottom plate is reduced.In addition, In the carrying engineering of refrigeration equipment, due to refrigeration equipment may in the vertical direction it is lower shake or from higher position fall on compared with Lower position, supporter can also reduce other components such as compressor and evaporating pan to the impact dynamics of bottom plate, reduce the change of bottom plate Shape degree.
The backboard is opposite with the edge interval of the bottom plate in one of the embodiments, the first connecting portion with The edge of the bottom plate is fixedly connected.
Detailed description of the invention
Fig. 1 is the partial structural diagram of the refrigeration equipment in one embodiment of the invention;
Fig. 2 is the structural schematic diagram one of the reinforcement unit in one embodiment of the invention;
Fig. 3 is partial structural diagram at the A of reinforcement unit shown in Fig. 2;
Fig. 4 is partial structural diagram at the B of reinforcement unit shown in Fig. 2;
Fig. 5 is the structural schematic diagram two of the reinforcement unit in one embodiment of the invention.
Description of symbols:
10, reinforcement unit, 20, bottom plate, 21, mounting plate, 30, backboard, the 40, first fastener, the 50, second fastener, 100, supporter, 110, first connecting portion, 120, second connecting portion, 130, connecting plate, 200, intensive aspect, the 210, first limit Portion, the 220, second limiting section.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, below in conjunction with attached drawing and specific embodiment party Formula, the present invention is further described in detail.It should be understood that the specific embodiments described herein are only to solve The present invention is released, and the scope of protection of the present invention is not limited.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ", " right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more Any and all combinations of relevant listed item.
Heretofore described " first ", " second " do not represent specific quantity and sequence, are only used for the differentiation of title.
As shown in Figure 1, a kind of partial structural diagram for refrigeration equipment that an embodiment is related to, which includes back Plate 30, bottom plate 20 and reinforcement unit 10, bottom plate 20 are oppositely arranged with the interval of backboard 30, and reinforcement unit 10 includes having opposite two The supporter 100 at end, the both ends of supporter 100 are respectively provided with first connecting portion 110 and second connecting portion 120, first connecting portion 110 are fixedly connected with bottom plate 20, and second connecting portion 120 is fixedly connected with backboard 30.
Wherein, the refrigeration equipment can be refrigerator, refrigerator-freezer, refrigerating box or refrigerator etc..
In refrigeration equipment, the bottom of refrigeration equipment is arranged in bottom plate 20, is mainly used for installing compressor and evaporating pan etc. Part is main stressed member;The back of refrigeration equipment is arranged in backboard 30, is mainly used to protect refrigeration equipment internal components It is not exposed, condenser heat is conducted, refrigeration equipment rear strength is reinforced.In refrigeration equipment, backboard 30 is spaced phase with bottom plate 20 To setting, by the way that the first connecting portion 110 of the supporter 100 of above-mentioned reinforcement unit 10 to be fixedly connected with bottom plate 20, supporter 100 second connecting portion 120 is fixedly connected with backboard 30, can effectively reinforce the intensity of bottom plate 20, will be suffered by bottom plate 20 A part of pressure is transmitted on supporter 100, reduces the deformation extent of bottom plate 20.In addition, in the carrying engineering of refrigeration equipment, It may be shaken down in the vertical direction due to refrigeration equipment or fall directly on lower position from higher position, supporter 100 is also Other components such as compressor and evaporating pan can be reduced to the impact dynamics of bottom plate 20, reduce the deformation extent of bottom plate 20.
As shown in Figure 1, Figure 2, Figure 5, first connecting portion 110 is to be opened on supporter 100 in one of the embodiments, The first pilot hole, the first pilot hole is used to be oppositely arranged with the second pilot hole of bottom plate 20, the first pilot hole and the second assembly Hole is used to wear for the first fastener 40.First fastener 40 is arranged in the first pilot hole and the second pilot hole, for inciting somebody to action Reinforcement unit 10 is fixedly connected with bottom plate 20.
Specifically, the shape of supporter 100 is long strip shape, and the bottom end of supporter 100 is equipped with a pilot hole, is assembling When, first allow the first pilot hole to be aligned with the second pilot hole, can be fixed by the first fastener 40 reinforcement unit 10 with Bottom plate 20.
Optionally, the first pilot hole and the second pilot hole are through-hole, and the first fastener 40 is screw bolt and nut composition Component;Or first pilot hole be through-hole, the second pilot hole be threaded hole, the first fastener 40 be screw;Or first pilot hole and Second pilot hole is through-hole, and the first fastener 40 is rivet.
As shown in Figure 2, Figure 4 shows, further, the first pilot hole is kidney slot.In this way, the cabinet of refrigeration equipment was producing Even if being deformed in journey, reinforcement unit 10 can also be made normally to assemble with bottom plate 20 or backboard 30.
Specifically, the length direction of kidney slot is consistent with the length direction of supporter 100, in this way, when production, i.e., There are errors for the length or the distance between bottom plate 20 and backboard 30 for making supporter 100, still can make reinforcement unit 10 just It often assembles with bottom plate 20 or backboard 30, is fixed convenient for operator.
As shown in Figure 1, Figure 2, Figure 5, second connecting portion 120 is to be opened on supporter 100 in one of the embodiments, Third pilot hole, third pilot hole is used to be oppositely arranged with the 4th pilot hole of backboard 30, third pilot hole and the 4th assembly Hole is used to wear for the second fastener 50.Second fastener 50 is arranged in third pilot hole and the 4th pilot hole, for inciting somebody to action Reinforcement unit 10 is fixedly connected with backboard 30.
Specifically, the top of supporter 100 is equipped with three pilot holes, when assembly, first allows third pilot hole and the 4th Pilot hole alignment, can fix reinforcement unit 10 and bottom plate 20 by the second fastener 50.
Optionally, third pilot hole and the 4th pilot hole are through-hole, and the second fastener 50 is screw bolt and nut composition Component;Or third pilot hole is through-hole, the 4th pilot hole is threaded hole, and the second fastener 50 is screw;Or third pilot hole and 4th pilot hole is through-hole, and the first fastener 40 is rivet.
As shown in Figure 2 and Figure 3, further, third pilot hole is kidney slot.In this way, the cabinet of refrigeration equipment was producing Even if being deformed in journey, reinforcement unit 10 can also be made normally to assemble with bottom plate 20 or backboard 30.
Specifically, the length direction of kidney slot is consistent with the length direction of supporter 100, in this way, when production, i.e., There are errors for the length or the distance between bottom plate 20 and backboard 30 for making supporter 100, still can make reinforcement unit 10 just It often assembles with bottom plate 20 or backboard 30, is fixed convenient for operator.
Further, third pilot hole is equipped with notch close to the side of first connecting portion 110.In this way, in assembling process In, first the second fastener 50 can be inserted into the 4th pilot hole, reinforcement unit 10 is then ridden over into fastening by notch again On part, so that third pilot hole and the 4th pilot hole realize prealignment;Then make the first pilot hole and the second pilot hole again Alignment, then the first fastener 40 is worn into the first pilot hole and the second pilot hole, realize reinforcement unit 10 and bottom plate 20 It is fixed;The fixation of reinforcement unit 10 and backboard 30 is finally realized by the second fastener 50 again, it is easy to operate.
Specifically, the top of supporter 100 has the connecting plate 130 being laterally extended along supporter 100, third pilot hole It is opened on connecting plate 130, and the downside of third pilot hole is equipped with notch.
As shown in Figure 1, Figure 2, Figure 5, in another embodiment, the first connecting portion 110 and second connecting portion of supporting element 120 be that the entity part on supporter 100, first connecting portion 110 and bottom plate 20 are fixed by welding realization, second connecting portion 120 realize fixation by welding with backboard 30.
As shown in Fig. 2, Fig. 5, reinforcement unit 10 further includes intensive aspect 200, intensive aspect 200 in one of the embodiments, It is connect with supporter 100, and intensive aspect 200 and supporter 100 are arranged in angle.Intensive aspect 200 can reinforce supporter 100 Intensity reduces the probability that supporter 100 is broken off in use.
Specifically, the shape of intensive aspect 200 is also long strip shape, and intensive aspect 200 is vertically arranged with supporter 100, And the length direction of intensive aspect 200 is parallel with the length direction of supporter 100, to increase the intensity of supporter 100 as much as possible.
As shown in Fig. 1,2, Fig. 4, intensive aspect 200 is set close to one end of first connecting portion 110 in one of the embodiments, There is the first limiting section 210, the first limiting section 210 is arranged with the interval of supporter 100, and the first limiting section 210 is matched with supporter 100 Close the first position limiting structure formed for the limit cooperation of bottom plate 20.
As Figure 1 and Figure 4, specifically, backboard 30 is opposite with the edge interval of bottom plate 20, and the edge of bottom plate 20 has court The mounting plate 21 extended to top plate, first connecting portion 110 are fixedly connected with the mounting plate 21.The setting of first limiting section 210 is adding The bottom end of strong body 200, has gap between the first limiting section 210 and supporter 100.In assembling process, reinforced by operation Unit 10 can make mounting plate 21 be inserted into the gap formed between the first limiting section 210 and supporter 100, in this way, energy It limits mounting plate 21 to reinforcement unit 10, is fixed convenient for operator.
As shown in Figure 1, Figure 2, Figure 3 shows, further, intensive aspect 200 is equipped with the second limit close to one end of second connecting portion 120 Position portion 220, the second limiting section 220 are arranged with the interval of supporter 100, and the second limiting section 220 cooperatively forms use with supporter 100 In the second position limiting structure with the limit cooperation of backboard 30.
As shown in Figure 1, Figure 3, specifically, the top of intensive aspect 200, the second limiting section 220 is arranged in the second limiting section 220 There is gap between supporter 100.In assembling process, by operating reinforcement unit 10, backboard 30 can be made to be inserted into In the gap formed between second limiting section 220 and supporter 100, it so, it is possible to limit backboard 30 to reinforcement unit 10 Position, is fixed convenient for operator.
As shown in Fig. 2, Fig. 5, specific in the present embodiment, intensive aspect 200 is two, and two intensive aspects 200 are respectively set Supporter can be further increased compared to an intensive aspect 200 is arranged on supporter 100 in the two sides of supporter 100 100 intensity.
Supporter 100 is an integral molding structure with intensive aspect 200 in one of the embodiments,.In this way, supporter 100 With intensive aspect 200 can by same material together be made, manufacture craft is simple.Optionally, supporter 100 and intensive aspect 200 are equal For galvanized steel, and supporter 100 can be integrally formed with intensive aspect 200 by way of casting.
As shown in Figure 1, Figure 2, Figure 5, it is based on inventive concept same as above-mentioned refrigeration equipment, an embodiment further relates to one kind Reinforcement structure, comprising: bottom plate 20, backboard 30 and above-mentioned reinforcement unit 10, backboard 30 are oppositely arranged with the interval of bottom plate 20, are reinforced The first connecting portion 110 of unit 10 is fixedly connected with bottom plate 20, and the second connecting portion 120 and backboard of reinforcement unit 10 are fixed to be connected It connects.The reinforcement structure can be applied not only in the storage equipments such as refrigerator, refrigerator-freezer, refrigerating box or refrigerator, also can be applied to Other equipment, if the equipment has bottom plate 20 and a backboard 30, and backboard 30 and bottom plate 20 be spaced opposite or backboard 30 with The edge interval of bottom plate 20 is opposite, so that it may by above-mentioned 10 connecting bottom board 20 of reinforcement unit and backboard 30, for reinforcing bottom The intensity of plate 20.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims (16)

1. a kind of reinforcement unit, it is applied to refrigeration equipment, the refrigeration equipment includes backboard and bottom plate, the bottom plate and the back Plate interval is oppositely arranged, which is characterized in that the reinforcement unit includes the supporter with opposite both ends, and the supporter Both ends be respectively provided with first connecting portion and second connecting portion, the first connecting portion is fixedly connected with the bottom plate, described Two interconnecting pieces are fixedly connected with the backboard.
2. reinforcement unit according to claim 1, which is characterized in that the first connecting portion is to be opened in the supporter On the first pilot hole, first pilot hole is used to be oppositely arranged with the second pilot hole of the bottom plate, first assembly Hole and second pilot hole are used to wear for the first fastener.
3. reinforcement unit according to claim 2, which is characterized in that first pilot hole is kidney slot.
4. reinforcement unit according to claim 1, which is characterized in that the second connecting portion is to be opened in the supporter On third pilot hole, the third pilot hole is used to be oppositely arranged with the 4th pilot hole of the backboard, the third assembly Hole and the 4th pilot hole are used to wear for the second fastener.
5. reinforcement unit according to claim 4, which is characterized in that the third pilot hole is kidney slot.
6. reinforcement unit according to claim 4, which is characterized in that the third pilot hole is close to the first connecting portion Side be equipped with notch.
7. reinforcement unit according to claim 1-6, which is characterized in that the reinforcement unit further includes reinforcing Body, the intensive aspect are connect with the supporter, and the intensive aspect and the supporter are arranged in angle.
8. reinforcement unit according to claim 7, which is characterized in that the intensive aspect is vertically arranged with the supporter.
9. reinforcement unit according to claim 7, which is characterized in that the intensive aspect close to the first connecting portion one End is equipped with the first limiting section, and first limiting section and the supporter interval are arranged, and first limiting section and the branch Support body is cooperatively formed for the first position limiting structure with bottom plate limit cooperation;
And/or the intensive aspect is equipped with the second limiting section, second limiting section and institute close to one end of the second connecting portion The setting of supporter interval is stated, and second limiting section and the supporter are cooperatively formed for limiting cooperation with the backboard Second position limiting structure.
10. reinforcement unit according to claim 7, which is characterized in that the intensive aspect is two, two intensive aspects It is respectively arranged at the two sides of the supporter.
11. reinforcement unit according to claim 7, which is characterized in that the supporter and the intensive aspect are integrated into Type structure.
12. reinforcement unit according to claim 1-6, which is characterized in that the shape of the supporter is strip Shape plate.
13. a kind of reinforcement structure characterized by comprising
Bottom plate;
Backboard, the backboard are oppositely arranged with the bottom plate interval;And
The described in any item reinforcement units of claim 1-12 as above, the first connecting portion are fixedly connected with the bottom plate, institute Second connecting portion is stated to be fixedly connected with the backboard.
14. reinforcement structure according to claim 13, which is characterized in that the edge interval phase of the backboard and the bottom plate Right, the first connecting portion is fixedly connected with the edge of the bottom plate.
15. a kind of refrigeration equipment characterized by comprising
Bottom plate;
Backboard, the backboard are oppositely arranged with the bottom plate interval;And
The described in any item reinforcement units of claim 1-12 as above, the first connecting portion are fixedly connected with the bottom plate, institute Second connecting portion is stated to be fixedly connected with the backboard.
16. refrigeration equipment according to claim 15, which is characterized in that the edge interval phase of the backboard and the bottom plate Right, the first connecting portion is fixedly connected with the edge of the bottom plate.
CN201910828938.5A 2019-09-03 2019-09-03 Reinforced unit, reinforced structure and refrigeration equipment Active CN110513950B (en)

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Application Number Priority Date Filing Date Title
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CN110513950A true CN110513950A (en) 2019-11-29
CN110513950B CN110513950B (en) 2021-05-14

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