CN207991354U - A kind of freezer comb and freezer evaporator - Google Patents

A kind of freezer comb and freezer evaporator Download PDF

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Publication number
CN207991354U
CN207991354U CN201820086301.4U CN201820086301U CN207991354U CN 207991354 U CN207991354 U CN 207991354U CN 201820086301 U CN201820086301 U CN 201820086301U CN 207991354 U CN207991354 U CN 207991354U
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CN
China
Prior art keywords
fin
freezer
refrigerant pipe
comb
defrosting
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.)
Expired - Fee Related
Application number
CN201820086301.4U
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Chinese (zh)
Inventor
梁志通
孟玉龙
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.)
Hebei Zhongchi Investment Co ltd
Original Assignee
Hebei Constant Poly Refrigeration Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Priority to CN201820086301.4U priority Critical patent/CN207991354U/en
Application granted granted Critical
Publication of CN207991354U publication Critical patent/CN207991354U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model belongs to freezer refrigerating equipment technical field more particularly to a kind of freezer comb and freezer evaporator.Freezer comb includes horizontally disposed refrigerant pipe, at least two fins, multiple thermofusion devices for defrosting and at least one drip tray;The first end of each fin is connected with the lateral wall of refrigerant pipe;Thermofusion device is corresponded with the fin;Each thermofusion device is connected with the second end of corresponding fin;It is located at the fin below the refrigerant pipe in the vertical direction to correspond with the drip tray;The drip tray is connected with the second end of corresponding fin, for holding the defrosting fallen.The freezer comb can quickly defrosting, and defrost during refrigerating plant normal operation, do not influence temperature of ice house, in addition, the freezer comb in this programme defrosting when it is easy to operate, it is time saving and energy saving, improve defrosting efficiency.

Description

A kind of freezer comb and freezer evaporator
Technical field
The utility model belongs to freezer refrigerating equipment technical field more particularly to a kind of freezer comb and freezer evaporator.
Background technology
The evaporator being currently installed in cold storage mostly uses greatly comb form, and a plurality of comb is arranged in parallel, and forms one A entirety is mounted on the top of storehouse.To increase heat exchange area, refrigerating efficiency is improved, fin is additionally provided on the outer wall of comb.System Cryogen is freezed by the side wall and fin and the air heat-exchange in freezer of comb in comb internal flow, makes the temperature in freezer It is down to setting value.
When the refrigeration system normal operation of freezer, the lateral wall of comb and the temperature of fin surface are less than 0 DEG C, stored goods Moisture in moisture and air especially in food can condense in after being precipitated on tube wall or fin, with cooling time Increase, the lateral wall and fin surface of comb can frostings.The thermal conductivity very little of frost layer, only 1 the percent of metal, thus Frost layer is formed larger thermal resistance, and frost layer is thicker, thermal resistance is bigger, at this time frost layer like insulating layer, so that comb in cold It does not distribute not come out, reduces refrigerating efficiency.
Currently used defrosting method, which has, manually sweeps frost, refrigerant hot melt frost and water defrosting etc..Manually sweep white labor intensity Greatly, cleaning is uneven, is not thorough.Refrigerant, which heats frost, to be passed through in comb after high temperature refrigerant gasifies, and steam heat release is utilized The frost layer for melting comb outer surface, liquid is converted into after steam heat release, is discharged into cycle liquid storage device.The white mode of refrigerant hot melt is removed White effect is good, efficient but complicated, cumbersome, and very big, easy influence food quality is influenced on library temperature.Aqueous fusion Frost is to melt frost layer to comb and fin surface shower water using the heat of water and wash out frost layer, but which is easy to make row Pipe and the moisture film of fin surface remaining freeze, and equally influence refrigerating efficiency.
Utility model content
In view of this, the utility model embodiment provides a kind of freezer comb and freezer evaporator, it being capable of quickly defrosting And temperature of ice house is not influenced, and it is time saving and energy saving, improve defrosting efficiency.
The utility model embodiment in a first aspect, provide a kind of freezer comb, including:
Horizontally disposed refrigerant pipe;
At least two fins;The first end of each fin is connected with the lateral wall of the refrigerant pipe;
Multiple thermofusion devices for defrosting;The thermofusion device is corresponded with the fin;Each hot melt dress It sets and is connected with the second end of corresponding fin;With
At least one drip tray;It is located at the fin below the refrigerant pipe and the drip tray in the vertical direction It corresponds;The drip tray is connected with the second end of corresponding fin, for holding the defrosting fallen.
Further, the quantity of fin is two;Two fins are located at the refrigerant in the vertical direction The upper and lower ends of pipe, and each fin is vertically arranged.
Further, the quantity of fin is three;In the vertical direction, the top of the refrigerant pipe is arranged described in one Two fins are arranged in fin, lower section;
Fin above the refrigerant pipe is vertically arranged, and two fins being located at below the refrigerant pipe are opposite It is symmetrical arranged in vertical axis.
Further, multiple catch are circumferentially uniformly provided on the madial wall of the refrigerant pipe;Each catch First end is fixedly connected with the madial wall of the refrigerant pipe, and second end extends to the axis of the refrigerant pipe.
Further, the thermofusion device is heating tape or heating wire.
Further, the refrigerant pipe is aluminium-alloy pipe, and the fin is aluminium alloy plate;The length of the fin is 3 Centimetre to 5 centimetres.
The second aspect of the utility model provides a kind of freezer evaporator, including multiple freezer combs.
Further, each freezer comb is arranged side by side in the horizontal direction, and two adjacent freezer combs Between by U-tube be connected.
Further, each freezer comb is vertically arranged side by side, and two adjacent freezer combs Between by U-tube be connected;
Each freezer comb includes two fins;Two fins are located at the refrigeration in the vertical direction The upper and lower ends of agent pipe, and each fin is vertically arranged;Fin between two adjacent freezer combs is in one Structure.
The third aspect of the utility model provides a kind of cold storage cooling device, including control mechanism and the freezer Evaporator;
The control mechanism is connected with each thermofusion device, the energization frequency for controlling each thermofusion device The duration being powered every time.
By adopting the above-described technical solution, the technological progress that the utility model obtains is:
Fin is set on the lateral wall of refrigerant pipe, heat exchange area can be increased, improves refrigerating efficiency.Thermofusion device is located at The end of fin keeps apart two opposite sides of fin, so that the frost layer condensed on two sides of fin is mutual Isolation, when thermofusion device is powered, the temperature of fin increases, and the frost layer Nian Jie with fin is heated to melt, in gravity Under from fin surface slide.Underlying drip tray is used for the frost layer that falls of access, avoid defrosting fall freezer article or On ground.
It is using advantageous effect caused by above-mentioned technical proposal:Freezer comb in this programme can quickly defrosting, And refrigerating plant normal operation during defrosting, temperature of ice house is not influenced, in addition, the freezer comb in this programme is in defrosting It is easy to operate, it is time saving and energy saving, improve defrosting efficiency.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without having to pay creative labor, can also be attached according to these Figure obtains other attached drawings.
Fig. 1 is the schematic diagram for the freezer comb that the utility model embodiment provides;
Fig. 2 is another schematic diagram for the freezer comb that the utility model embodiment provides;
Fig. 3 is the first schematic diagram of the freezer evaporator that the utility model embodiment provides;
Fig. 4 is the second schematic diagram of the freezer evaporator that the utility model embodiment provides;
Fig. 5 is the third schematic diagram for the freezer evaporator that the utility model embodiment provides;
Fig. 6 is the 4th schematic diagram of the freezer evaporator that the utility model embodiment provides.
Reference sign:
10- refrigerant pipes, 11- catch, 20- fins, 30- thermofusion devices, 40- drip trays.
Specific implementation mode
In being described below, for illustration and not for limitation, it is proposed that such as tool of particular system structure, technology etc Body details, to understand thoroughly the utility model embodiment.However, it will be clear to one skilled in the art that there is no these The utility model can also be realized in the other embodiments of detail.In other situations, omit to well-known system, The detailed description of apparatus, circuit and method, in case unnecessary details interferes the description of the utility model.
In order to illustrate technical solution described in the utility model, illustrated below by specific embodiment.
The utility model embodiment provides a kind of freezer comb, and in conjunction with shown in Fig. 1 and Fig. 2, freezer comb includes level The refrigerant pipe 10 of setting, at least two fins 20, multiple thermofusion devices 30 and at least one drip tray 40 for defrosting.Often The first end of a fin 20 is connected with the lateral wall of refrigerant pipe 10.Thermofusion device 30 is corresponded with fin 20.Each heat Fusing device 30 is connected with the second end of corresponding fin 20.In the vertical direction, each drip tray 40 be located at refrigerant pipe 10 Each fin 20 of lower section corresponds.Drip tray 40 and the second end of corresponding fin 20 are connected, for holding melting of falling Frost.
Fin 20 is set on the lateral wall of refrigerant pipe 10, heat exchange area can be increased, improves refrigerating efficiency.Thermofusion device 30 are located at the end of fin 20, and two opposite sides of fin 20 are kept apart, so that being coagulated on 20 two sides of fin The frost layer of knot is mutually isolated, and when thermofusion device 30 is powered, the temperature of fin 20 increases, the frost layer Nian Jie with fin 20 by Heat is melted, and is slid under the effect of gravity from 20 surface of fin.Underlying drip tray 40 is used for the frost layer that access is fallen, and avoids Defrosting is fallen on the article of freezer or ground.
Refrigerant pipe 10 and the ground of freezer are arranged in parallel, and fin 20 is generally vertically arranged, when frosting, refrigerant The frost layer of 20 two sides of the lateral surface of pipe 10 and fin can condense into the entirety of a similar ice cube, and when defrosting needs monoblock Frost layer thawing live cobbing, increase operation difficulty.In the prior art, such as by the way of manually defrosting, to avoid Percussion causes comb to damage, and generally will not directly tap frost layer, but the temperature that refrigerating plant is shut down to, increased freezer makes frost layer After thawing, then cleaned.But which is affected to temperature of ice house, be easy to cause food spoilage.
In the prior art, as by the way of refrigerant hot melt frost, it is also desirable to shut down refrigerating plant, to refrigerant pipe 10 In be passed through high-temperature gas or high-temp liquid, and need completely to melt the frost layer of monoblock.Which can also cause temperature of ice house Larger impact, and time-consuming for defrosting, increases freezer and runs difficulty.
In the prior art, it as by the way of water defrosting, freezes to avoid spraying instant water, it is also desirable to stop refrigerating plant Machine, and water consumption is big.The surface for causing ejected wash water to be adhered to refrigerant pipe 10 and fin 20 are also easy to using which Surface congeals into ice, and loses the meaning of defrosting.
Therefore, in the present embodiment, thermofusion device 30 keeps apart two sides of fin 20 so that frost layer can not condense Block is frosted, is equivalent to and breaks the white block of monoblock into two from centre into pieces, thermofusion device 30 is equivalent to the effect of " ice-cutter ", works as heat When fusing device 30 is powered, as long as slightly increasing the temperature of fin 20, frost layer can be detached from coherent condition, under gravity, Frost layer can easily slide from the surface of fin 20.Moreover, when thermofusion device 30 is powered, refrigerant can normally made Flowing refrigeration in refrigerant tube 10 does not influence temperature of ice house without shutting down refrigerating plant, time saving and energy saving.
As a kind of embodiment, in conjunction with shown in Fig. 1, the quantity of fin 20 is two.Two fins 20 are in the vertical direction The upper and lower ends of refrigerant pipe 10 are located at, and each fin 20 is vertically arranged.Throwing of two fins 20 in perpendicular Shadow is in I fonts.
In conjunction with shown in Fig. 1, the fin 20 for being located at 10 top of refrigerant pipe is upper fin, and top connects with the first thermofusion device It connects, the first thermofusion device is used to the frost layer of upper fin both sides being isolated.Fin 20 positioned at 10 lower section of refrigerant pipe is lower fin, Bottom end is connect with the second thermofusion device, and the second thermofusion device is used to the frost layer of lower fin both sides being isolated.Upper fin or lower fin End U-shaped or V-type opening can be set, the first thermofusion device or the second thermofusion device are nested in opening;It can also be by One thermofusion device or the second thermofusion device are bonded in the end of fin or lower fin.
As a kind of embodiment, in conjunction with shown in Fig. 2, the quantity of fin 20 is three.In the vertical direction, refrigerant pipe 10 Top be arranged a fin 20, lower section be arranged two fins 20.Fin 20 above refrigerant pipe 10 is vertically arranged, position Two fins 20 in 10 lower section of refrigerant pipe are symmetrical arranged relative to vertical axis.Throwing of three fins 20 in perpendicular Shadow is in chevron shaped.Specifically, being vertical axis positioned at the plane where the fin 20 of 10 top of refrigerant pipe.
20 quantity of fin of the outside connection of refrigerant pipe 10 is more, and refrigeration area is bigger, and refrigerating efficiency is also higher.But wing The quantity of piece 20 is more, and the difficulty of defrosting can also increase simultaneously.According to practical experience, when 3 fins 20 are set, refrigerating efficiency compared with The high difficulty that defrosts simultaneously is also smaller.It, can be in addition, two 20 relative axis of fin positioned at the lower section of refrigerant pipe 10 are symmetrical arranged So that thawing speed when frost layer rate of set and the defrosting of two fins 20 is consistent, be conducive to the frost layer for making two fins 20 It falls off, to keep 10 both sides stress of refrigerant pipe consistent, prolongs the service life simultaneously.
As a kind of embodiment, circumferentially it is uniformly provided in conjunction with shown in Fig. 1 and Fig. 2, on the madial wall of refrigerant pipe 10 more A catch 11.The first end of each catch 11 is fixedly connected with the madial wall of refrigerant pipe 10, and second end is to refrigerant pipe 10 Axis extend.
Refrigerant is flowed along the madial wall of refrigerant pipe 10, and cold is passed to the side wall of refrigerant pipe 10, refrigerant pipe 10 side wall carries out Cooling capacity exchanging with the air in freezer again, reaches refrigeration effect.Catch 11 increases and refrigerant contact Area can strengthen refrigeration effect, improve refrigerating efficiency.
Specifically, thermofusion device 30 is heating tape or heating wire.Heating tape or heating wire are laid along the end of fin 20, when When energization, the heat transfer of heating tape or heating wire is to fin 20 so that the frost layer of 20 both sides of fin is heated to melt, threshing adherency State from the surface of fin 20 to slide.
Specifically, refrigerant pipe 10 is aluminium-alloy pipe, fin 20 is aluminium alloy plate.Relative to copper pipe or steel pipe, aluminum Managing has better heat-transfer capability, and under same case, refrigerant is more in the systemic heat of aluminum tube, so as to reduce system The evaporating temperature of cryogen and the temperature difference of aluminum tube improve refrigerating efficiency.In addition, aluminum tube light weight, is easily installed.
Specifically, the length of fin 20 is 3 centimetres to 5 centimetres.The length of fin 20 is too small, and increase refrigeration area is not achieved Effect, and length is excessive, and end can form cold with refrigerant pipe 10 and transmit, and equally have the work for improving refrigerating efficiency With can also increase material cost.According to practical experience, when the length of fin 20 is set as 3 centimetres to 5 centimetres, refrigerating efficiency is higher.
The utility model embodiment additionally provides a kind of freezer evaporator, in conjunction with shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, including Multiple above-mentioned freezer combs.
As a kind of embodiment, in conjunction with shown in Fig. 3 and Fig. 4, each freezer comb is arranged side by side in the horizontal direction, and It is connected by U-tube between two adjacent freezer combs.In figure 3, each freezer comb includes two fins 20, system Refrigerant tube 10 is connected by U-tube first place, forms S-shaped overall structure, and refrigerant is flowed along refrigerant pipe 10 to freeze.Each fin The frost layer of 20 both sides of fin is isolated into mutually independent frost layer by the thermofusion device 30 of 20 ends, when thermofusion device 30 is powered, Frost layer thawing falls off, and falls into the drip tray 40 of lower section.
In Fig. 4, each freezer comb includes three fins 20, and refrigerant pipe 10 is connected by U-tube first place, forms S Shape overall structure, refrigerant is flowed along refrigerant pipe 10 to freeze.The thermofusion device 30 of 20 end of each fin is by 20 both sides of fin Frost layer be isolated into mutually independent frost layer, when thermofusion device 30 is powered, frost layer thawing falls off, fall into lower section drip tray 40 It is interior.
As a kind of embodiment, in conjunction with shown in Fig. 5, each freezer comb is vertically arranged side by side, and adjacent Two freezer combs between by U-tube be connected.Each freezer comb includes two fins 20.Two fins 20 It is located at the upper and lower ends of refrigerant pipe 10 in the vertical direction, and each fin 20 is vertically arranged.Described in adjacent two Fin 20 between freezer comb is in integral structure.
In Figure 5, each freezer comb includes two fins 20, and each fin 20 is vertically arranged, each refrigerant pipe 10 Also it is vertically arranged, and is connected by U-tube first place, form S-shaped overall structure, refrigerant is flowed along refrigerant pipe 10 to freeze.Phase Fin 20 between two adjacent refrigerant pipes 10 is in integral structure, is located at the fin 20 of the top of the refrigerant pipe 10 of the top Thermofusion device 30 is arranged in top.Positioned at 20 bottom end of fin of the lower section of the refrigerant pipe 10 of bottom, thermofusion device 30 is set, and It is connected with drip tray 40.
In addition, in conjunction with shown in Fig. 6, each freezer comb includes three fins 20.Each refrigerant pipe 10 is vertically arranged, and It is connected by U-tube first place, forms S-shaped overall structure, refrigerant is flowed along refrigerant pipe 10 freezes.20 end of each fin The frost layer of 20 both sides of fin is isolated into mutually independent frost layer by thermofusion device 30, and when thermofusion device 30 is powered, frost layer is melted It falls off, falls into the drip tray 40 of lower section.
The utility model embodiment additionally provides a kind of cold storage cooling device, including control mechanism and the evaporation of above-mentioned freezer Device.The control mechanism is connected with each thermofusion device 30, and the energization frequency for controlling each thermofusion device 30 is led to each The duration of electricity.According to practical experience, when frost layer reaches 3 cm thick, controlling the energization of thermofusion device 30 by control mechanism is It can.It is such as lasting to be powered, consuming energy, and influence refrigerating efficiency.When as larger such as frost thickness, need the fusing longer time could Frost layer is set to fall off.
When defrosting, operating personnel only need operating control mechanism, you can and control defrosting frequency and defrosting effect are time saving and energy saving. Specifically, PLC or microcontroller etc. may be used in control mechanism.
Freezer comb in this programme can quickly defrosting, and refrigerating plant normal operation during defrosting do not influence Temperature of ice house, in addition, the freezer comb in this programme is easy to operate in defrosting, it is time saving and energy saving, improve defrosting efficiency.
Embodiment described above is only to illustrate the technical solution of the utility model, rather than its limitations;Although with reference to before Embodiment is stated the utility model is described in detail, it will be understood by those of ordinary skill in the art that:It still can be with Technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features;And These modifications or replacements, the spirit for various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution And range, it should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of freezer comb, which is characterized in that including:
Horizontally disposed refrigerant pipe;
At least two fins;The first end of each fin is connected with the lateral wall of the refrigerant pipe;
Multiple thermofusion devices for defrosting;The thermofusion device is corresponded with the fin;Each thermofusion device with The second end of corresponding fin is connected;With
At least one drip tray;It is located at the fin and the drip tray below the refrigerant pipe in the vertical direction one by one It is corresponding;The drip tray is connected with the second end of corresponding fin, for holding the defrosting fallen.
2. freezer comb according to claim 1, it is characterised in that:The quantity of fin is two;Two fins exist The upper and lower ends of the refrigerant pipe are located on vertical direction, and each fin is vertically arranged.
3. freezer comb according to claim 1, it is characterised in that:The quantity of fin is three;In the vertical direction, institute A fin is arranged in the top for stating refrigerant pipe, and two fins are arranged in lower section;
Fin above the refrigerant pipe is vertically arranged, and is located at two fins below the refrigerant pipe relative to perpendicular Straight axis is symmetrical arranged.
4. freezer comb according to claim 1, it is characterised in that:On the madial wall of the refrigerant pipe circumferentially uniformly Equipped with multiple catch;The first end of each catch is fixedly connected with the madial wall of the refrigerant pipe, and second end is to institute The axis for stating refrigerant pipe extends.
5. freezer comb according to claim 1, it is characterised in that:The thermofusion device is heating tape or heating wire.
6. freezer comb according to claim 1, it is characterised in that:The refrigerant pipe is aluminium-alloy pipe, the fin For aluminium alloy plate;The length of the fin is 3 centimetres to 5 centimetres.
7. a kind of freezer evaporator, it is characterised in that:Including multiple such as claim 1 to 6 any one of them freezer comb.
8. freezer evaporator according to claim 7, it is characterised in that:Each freezer comb is in the horizontal direction side by side Setting, and be connected by U-tube between two adjacent freezer combs.
9. freezer evaporator according to claim 7, it is characterised in that:Each freezer comb is vertically side by side Setting, and be connected by U-tube between two adjacent freezer combs;
Each freezer comb includes two fins;Two fins are located at the refrigerant pipe in the vertical direction Upper and lower ends, and each fin is vertically arranged;Fin between two adjacent freezer combs is in integral structure.
10. a kind of cold storage cooling device, it is characterised in that:Including control mechanism and as claim 7 to 9 any one of them is cold Library evaporator;
The control mechanism is connected with each thermofusion device, energization frequency for controlling each thermofusion device and every The duration of secondary energization.
CN201820086301.4U 2018-01-18 2018-01-18 A kind of freezer comb and freezer evaporator Expired - Fee Related CN207991354U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820086301.4U CN207991354U (en) 2018-01-18 2018-01-18 A kind of freezer comb and freezer evaporator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820086301.4U CN207991354U (en) 2018-01-18 2018-01-18 A kind of freezer comb and freezer evaporator

Publications (1)

Publication Number Publication Date
CN207991354U true CN207991354U (en) 2018-10-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820086301.4U Expired - Fee Related CN207991354U (en) 2018-01-18 2018-01-18 A kind of freezer comb and freezer evaporator

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114427777A (en) * 2022-01-14 2022-05-03 凌忠平 Freezer calandria defrosting and deicing machine adaptable to different pipe distances
CN114754535A (en) * 2022-04-22 2022-07-15 南通市海门雪盾冷冻设备有限公司 Calandria anti-icing device for refrigeration house

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114427777A (en) * 2022-01-14 2022-05-03 凌忠平 Freezer calandria defrosting and deicing machine adaptable to different pipe distances
CN114427777B (en) * 2022-01-14 2023-09-01 延长县沃康果业有限责任公司 Refrigerator calandria defrosting and ice removing machine adaptable to different pipe pitches
CN114754535A (en) * 2022-04-22 2022-07-15 南通市海门雪盾冷冻设备有限公司 Calandria anti-icing device for refrigeration house

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GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20190826

Address after: Room 1115, Platinum-collar Business, 120 Berlin South Road, Xinhua District, Shijiazhuang City, Hebei Province, 050060

Patentee after: Hebei Zhongchi Investment Co.,Ltd.

Address before: 050000 Platinum-collar Business Floor 11, 120 Berlin South Road, Xinhua District, Shijiazhuang City, Hebei Province

Patentee before: HEBEI HENG POLY REFRIGERATION TECHNOLOGY CO.,LTD.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20181019