An open refrigerated cabinet with adjustable display depth

Abstract

An open refrigerated cabinet with adjustable display depth comprises: a cabinet back foaming plate (1) provided with a main air duct (2), a bottom expandable shelf mechanism (5) arranged at the bottom of the cabinet inner cavity, and a plurality of cantilevered shelf plate mechanisms (6) arranged on the inner wall of the cabinet, and a combined fan and evaporator (7) arranged in the main air duct (2). The invention is characterized in that: the cabinet inner cavity with variable load capacity is formed by the plurality of cantilevered retractable shelf plate mechanisms (6) arranged on the inner wall of the cabinet and the expandable shelf mechanism (5) arranged at the bottom of the cabinet, and at the same time, a double air curtain inflation mechanism composed of cooling air and non-cooling air formed by the combined fan and evaporator arranged in the middle and upper parts of the vertical air duct of the main air duct (2) is formed together to form an open refrigerated cabinet with adjustable display depth.

Description

Technical Field

[0001] The invention relates to an open refrigerated cabinet, in particular to a novel open refrigerated cabinet with adjustable display depth, belonging to the field of design and manufacture of food refrigerated cabinets. Background Art

[0002] Open refrigerators are refrigerated cabinets commonly used in supermarkets and food stores that require refrigerated display. This type of food refrigerator is usually designed with an air curtain designed on the upper part of the specified front to display the refrigerated food on the shelf to consumers through the air curtain, which not only gives consumers an intuitive feeling, but also makes it convenient for them to choose to buy at any time.

[0003] As a manufacturer engaged in the design and manufacture of food refrigerators for many years, the applicant has always felt that the conventional open refrigerators have the following problems in actual use:

[0004] First, the common open refrigerators on the market have a common appearance specification of 2000X860-1030mm in height and width, of which the height from the bottom of the base to the lowest open shelf is 250mm; this part is mainly used to support the base of the entire cabinet and the air chamber in the upper inner cavity of the base as a fan and evaporator; therefore, the effective height of the display space in the cabinet is only about 1600mm; the usual design only has five layers of cantilever shelves and the bottom shelf at the bottom of the cabinet; therefore, how to improve the effective load rate of the cabinet cavity without changing the appearance specifications;

[0005] Secondly, common open-type refrigerators generally use wind curtains to isolate the food displayed in the cabinet from the external natural environment. As a common refrigerator, its main feature is to use the cooling air generated by the fan and evaporator installed at the bottom of the cabinet. The driving wind generated by the fan is along the main air duct installed at the rear of the partition inside the cabinet. On the one hand, the cooling air enters the cabinet cavity with the shelf board from the small ventilation holes on the inner partition. At the same time, a part of the cooling air is blown out from the air outlet on the upper part of the cabinet to form a wind curtain from top to bottom, which plays a role in isolating the cabinet cavity from the natural space outside the cabinet, so that the food in the cabinet can be in a relatively ideal low-temperature preservation environment. The isolation effect of this traditional single-layer wind curtain is relatively limited, especially when the ambient temperature is high. In order to keep the food in the cabinet from deteriorating, the refrigeration effect is very high, resulting in high energy consumption.

[0006] Therefore, this also raises a question for manufacturers who have been engaged in the manufacture of food refrigerators:

[0007] Provide a method to improve the effective load-bearing rate of the cabinet cavity without changing the appearance specifications

[0008] And new open refrigerated cabinets with adjustable display depth to further reduce energy consumption. Summary of the invention

[0009] The purpose of the present invention is to provide an open refrigerated cabinet with adjustable display depth, which can improve the effective load-bearing rate of the cabinet body cavity and further reduce energy consumption without changing the appearance specifications.

[0010] The above invention object is achieved through the following technical solutions:

[0011] This open-type refrigerated cabinet with adjustable display depth comprises: a cabinet back foaming board 1 with a main air duct 2, a bottom expandable shelf mechanism 5 arranged at the bottom of the cabinet inner cavity, and a plurality of cantilevered shelf board components 6 arranged on the inner wall of the cabinet, an air charging chamber 8 and an evaporator 7 arranged in the main air duct 2, characterized in that: a cabinet inner cavity with adjustable load capacity is formed by a plurality of cantilevered retractable shelf board components 6 arranged from bottom to top on the inner wall of the cabinet and an expandable shelf mechanism 5 arranged at the bottom of the cabinet cavity, and at the same time, a double air curtain air charging mechanism capable of conveying refrigeration air and non-refrigeration air is formed by a combined fan and an evaporator 7 arranged in the middle and upper parts of the vertical air duct of the main air duct 2, thereby forming an open-type double air curtain refrigerated cabinet with adjustable display depth;

[0012] in:

[0013] The bottom expandable shelf mechanism 5 is composed of a movable foam board assembly 5.1, a support assembly and a sliding assembly. The support assembly is composed of sliding end frames 5.6 arranged on the upper left and right sides of the movable foam board assembly 5.1, bottom end frames 5.9 on the lower left and right sides, a sliding central frame 5.7 arranged at the central axis position of the movable foam board assembly 5.1, and four display board front supports 5.4 arranged on the movable foam board assembly 5.1 with the sliding central frame 5.7 as the symmetric center, and a return air vent support 5.3 is respectively arranged between the left and right groups of display board front supports 5.4; the sliding assembly is composed of a slide rail mounting member 5.2 arranged on the inner side surfaces of the two sliding end frames 5.6 arranged on the left and right sides, and a double-layer slide rail 5.5 installed on the left and right sides of the sliding central frame 5.7; and a movable rear positioning baffle 5.10 is provided on the lower bottom surface of the movable foam board assembly 5.1;

[0014] The shelf plate assembly is composed of a main shelf plate assembly 6.1 and a sub-shelf plate assembly 6.2 arranged at the rear of the main shelf plate assembly 6.1 and located below the lower plane of the main shelf plate 6.11; two side L-shaped sliding grooves 6.31 are arranged on the side frame surface of the shelf bracket fixing frame 6.3, and the main shelf plate assembly 6.1 is composed of the main shelf plate 6.11, the sliding bracket 6.12, the shelf bracket fixing piece 6.13, and the shelf lighting groove 6.14; two sliding screws 6.6 perpendicular to the sliding bracket frame surface are fixed on the side surface of the sliding bracket 6.12, and the rod body of the sliding screw 6.6 is inserted from the outside to the inside into the sliding groove 6.31 on the shelf bracket fixing frame 6.3 to form a horizontal displacement structure of the main shelf plate; the sub-shelf plate assembly 6.2 is fixed on the sub-shelf connecting plate 6.33 arranged horizontally at the rear of the shelf bracket fixing frame 6.3;

[0015] The evaporator 7 in the double air curtain charging mechanism is arranged in the middle and upper part of the main air duct 2 composed of the rear wall plate 13 in the cabinet body and the foam plate 1 on the back of the cabinet body, and a combined isolation plate is added between the rear part of the evaporator 7 and the foam plate 1 on the back of the cabinet body, so as to separate the vertical main air duct from bottom to top into a cooling air channel 2.2 passing through the evaporator body and outputting the cooling air from the upper part and a non-cooling air channel 2.1 conveying normal temperature air between the rear part of the evaporator 7 and the foam plate 1 on the back of the cabinet body; at the same time, an evaporator front baffle 16 is added in front of the evaporator 7 to form an upper part intersecting with the cooling air channel 2.2 and the side intersecting with the cabinet inner cavity 12 through the air leakage hole 13.1 on the rear wall plate 13 in the cabinet body. In addition, a combined plenum chamber 8 equipped with a plurality of fans is arranged on the upper part of the cooling air channel 2.2 and the non-cooling air channel 2.1, and the outlet of the combined plenum chamber 8 is divided into a non-cooling air output channel 2.11 and a cooling air output channel 2.21 respectively connected to the non-cooling air channel 2.1 by a plurality of partition plates; wherein the non-cooling air output channel 2.11 is connected with the non-cooling air outlet 10 arranged on the outer side below the top of the cabinet to form an outer layer of normal temperature isolation air curtain of the refrigerator, and the cooling air output channel 2.21 is connected with the cold air outlet 9 arranged on the lower top of the cabinet to form a cold air isolation air curtain located on the inner side of the outer layer of normal temperature isolation air curtain.

[0016] Furthermore, the slide rail mounting member 5.2 and the sliding end frame 5.6, the slide rail mounting member 5.2 and the sliding central frame 5.7 are connected to the double-layer slide rail 5.5 through the slide rail mounting member 5.2 placed on the movable foam plate assembly 5.1 at the bottom and the sliding end frame 5.6 installed on the bottom end frame 5.9 to form a movable foam plate assembly 5.1 that can translate along the double-layer slide rail 5.5.

[0017] Furthermore, the movable foam plate assembly 5.1 is arranged along the upper edge horizontal plane of the cabinet inner bottom foam plate 5.8, and the outer side surface of the cabinet inner bottom foam plate 5.8 is provided with a flap 5.19 and a hinge 5.20 cooperating with the flap 5.19.

[0018] Furthermore, a moving stopper 5.16, a front panel support 5.17 and a front panel 5.18 are arranged on the front panel body of the cabinet bottom foaming panel 5.8 from the inside to the outside, and a moving foaming panel stopper 5.15 is arranged on the inclined surface thereof.

[0019] Furthermore, the movable foaming plate assembly 5.1 is L-shaped, and a price list bar 5.11 is provided on its outer side.

[0020] Furthermore, the sliding screw 6.6 is composed of three parts: a flat head-shaped screw head, a smooth cylindrical surface in the middle, and an M4 threaded rod at the tail for connecting with the sliding bracket 6.12.

[0021] Furthermore, the auxiliary shelf plate assembly 6.2 is composed of an auxiliary shelf plate 6.21 and an auxiliary shelf plate reinforcement 6.22, and is fixed to the auxiliary shelf plate connecting plate 6.32 at the rear of the shelf bracket fixing frame 6.3 by screws.

[0022] Furthermore, the shelf fixing plate 6.13 is provided with a locking square hole A 6.131 and a locking square hole B 6.132.

[0023] Furthermore, the shelf bracket fixing frame 6.3 is provided with a positioning groove 6.32 with a barb on the frame body located above an L-shaped sliding groove 6.31, and the upper part of the inner groove body of the positioning groove is provided with a barb for hooking with the positioning square hole 6.131 and the positioning square hole B 6.132 provided on the shelf fixing plate 6.13.

[0024] Furthermore, the combined isolation panel is composed of a lower non-cold back panel 14 and an upper non-cold back panel 15 that are close to the outside of the evaporator 7. The two are fixed on a common Z-shaped back support 25, which is close to the outside of the evaporator 7. The Z-shaped back support 25 is fixed on the foam plate 1 on the back of the cabinet. At the same time, the upper part of the upper non-cold back panel 15 is abutted against the top foam plate in the cabinet, and a ventilation hole that is connected to the combined inflation chamber 8 is provided on the upper panel surface of the upper non-cold back panel 15.

[0025] Furthermore, three fans are arranged in the combined inflation chamber 8: a non-refrigerating air conveying fan A 8.4, a refrigerating air conveying fan B 8.2 and a refrigerating air conveying fan C 8.3; wherein the non-refrigerating air conveying fan A 8.4 is arranged in the middle position of the combined inflation chamber 8, and the refrigerating air conveying fan B 8.2 and the refrigerating air conveying fan C 8.3 are arranged on the left and right sides of the non-refrigerating air conveying fan A 8.4; the non-refrigerating air conveying fan A 8.4, the refrigerating air conveying fan B 8.2 and the refrigerating air conveying fan C 8.3 are separated into independent working spaces by the inflation chamber end baffles 20 arranged on their respective left and right sides; the non-refrigerating air conveying fan A 8.4 conveys the non-refrigerating air from the lower non-refrigerating air channel 2.1 into the horizontally arranged non-refrigerating air output channel 2.11; the refrigerating air conveying fan B 8.2 and the refrigerating air conveying fan C 8.3 are arranged on the left and right sides of the non-refrigerating air conveying fan A 8.4. 8.3 The refrigerated air from the lower refrigeration air passage 2.2 is sent to the refrigeration air output passage 2.21.

[0026] Furthermore, the non-cooling air conveying fan A 8.4 is placed on the inflation chamber mounting plate 8.1, and the non-cooling air is sent out from the non-cooling air outlet 10 through two inclined non-cooling air guide plates 23 arranged in front of the non-cooling air conveying fan A 8.4 to form an outer non-cooling air curtain.

[0027] Furthermore, the cooling air delivery fan B 8.12 and the cooling air delivery fan C 8.3 are arranged on the inflation chamber mounting plate 8.1, and the cooling air is delivered from the cold air outlet 9 through two sets of cooling air duct guide plates 24 respectively arranged in front of the delivery fans to form an inner cooling air curtain.

[0028] The new open refrigerated cabinet with adjustable display depth proposed according to the above technical solution has the following major features:

[0029] 1) By setting the bottom expandable mechanism and retractable shelf board in the cabinet cavity, the load capacity of the shelves in the cabinet can be adjusted according to market demand. The shelf board can be stretched out during the peak sales season, so that the load capacity of each cabinet can be increased without increasing the business area of ​​the store;

[0030] 2) By changing the settings of the evaporator and the fan, the main air duct is changed to transport both cooling air and non-cooling air. By setting the non-cooling air curtain outside the traditional cooling air curtain, it can not only more effectively maintain the low temperature environment of the cabinet cavity, but also provide technical support for reducing the energy consumption of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention (when not expanded);

[0032] Figure 2 It is a schematic diagram of the overall structure of the present invention (after expansion);

[0033] Figure 3 It is a schematic diagram of the overall structure of the bottom expandable shelf mechanism;

[0034] Figure 4 for Figure 3 A-direction view;

[0035] Figure 5 It is a schematic diagram of the state when the movable foam plate in the bottom expandable shelf mechanism is not unfolded;

[0036] Figure 6 It is a schematic diagram of the state when the movable foam plate in the bottom expandable shelf mechanism is unfolded;

[0037] Figure 7 It is a schematic diagram of the overall structure of the expandable shelf board in the folded state;

[0038] Figure 8 for Figure 7 Bottom view of the middle main shelf panel;

[0039] Fig. 9 It is a structural schematic diagram of the shelf support fixing frame;

[0040] Fig.10 The installation position and structural diagram of the auxiliary shelf assembly;

[0041] Fig.11 It is a schematic diagram of the structure of the shelf support fixing frame 6.3;

[0042] Fig.12 The overall structural diagram of the main shelf assembly 6.1;

[0043] Fig.13 It is a schematic diagram of the structure of the auxiliary shelf assembly 6.2;

[0044] Fig.14 This is a schematic diagram of the non-cold air duct circulation in the present invention;

[0045] Fig.15 for Fig.14 A partial enlarged view of the middle air-filled chamber 8;

[0046] Fig.16 This is a schematic diagram of the cooling air duct circulation in the present invention;

[0047] Fig.17 for Fig.16 A partial enlarged view of the middle air-filled chamber 8;

[0048] Fig.18 It is a schematic diagram of the plane distribution of three fans in the inflation chamber 8;

[0049] Fig.19 This is a top view of the non-cold air duct;

[0050] Fig. 20 This is a top view of the main air duct for top cooling;

[0051] Fig.21 It is a schematic diagram of the structure of the back panel of the cabinet cavity;

[0052] Fig. 22 It is a structural schematic diagram of the upper non-cold back panel;

[0053] Fig.23 This is a schematic diagram of the combined installation of combined isolation panels.

[0054] In the figure:

[0055] 1- Foam board on the back of the cabinet;

[0056] 2-main air duct; 2.1-non-cooling air duct; 2.11-non-cooling air output duct;

[0057] 2.2- Refrigeration air duct; 2.21- Refrigeration air output duct; 2.3- Back compensation air duct;

[0058] 2.31- Rear compensation air duct inlet;

[0059] 3- base;

[0060] 4-Air inlet;

[0061] 5-Bottom expandable shelf mechanism;

[0062] 5.1- Removable foam board assembly; 5.2- Slide rail mounting; 5.3- Air return vent support;

[0063] 5.4- display board front support; 5.5- double-layer slide rail; 5.6- sliding end frame; 5.7- sliding central frame; 5.8- cabinet bottom foam board; 5.9- bottom end frame; 5.10- mobile rear positioning baffle;

[0064] 5.11-Price column; 5.12-Return air outlet; 5.13-In front of the display board; 5.15-Moving foam board stopper;

[0065] 5.16-moving stopper; 5.17-front panel support; 5.18-front panel; 5.19-flap; 5.20-hinge;

[0066] 5.21-Hinge mounting parts;

[0067] 6-Cantilever retractable shelf assembly;

[0068] 6.1-Main shelf assembly; 6.11-Main shelf; 6.12-Sliding bracket;

[0069] 6.13- Shelf bracket fixings; 6.131- Positioning square hole A; 6.132- Positioning square hole B; 6.14- Shelf lighting slot; 6.2- Secondary shelf board assembly; 6.21- Secondary shelf board;

[0070] 6.22-Auxiliary shelf plate reinforcement; 6.3-Shelf bracket fixing frame; 6.31-Sliding groove;

[0071] 6.32- Positioning slot; 6.33- Auxiliary shelf board connecting plate; 6.4- LED light; 6.5- Price column;

[0072] 6.6-sliding screw; 6.7-shelf bracket; 6.71-shelf bracket slot; 6.8-screw;

[0073] 7- Evaporator;

[0074] 8- Inflatable chamber;

[0075] 8.1-Installation chamber mounting plate; 8.2-Refrigeration air delivery fan B; 8.3-Refrigeration air delivery fan C; 8.4-Non-refrigeration air delivery fan A;

[0076] 9-Cold air outlet;

[0077] 10-Non-cooling air outlet;

[0078] 11- Lighting trough straight frame;

[0079] 12-Inner cavity of cabinet;

[0080] 13-Inner wall of cabinet; 13.1-Air leakage hole;

[0081] 14-lower non-cold back panel;

[0082] 15-upper non-cold back panel;

[0083] 16-evaporator front baffle;

[0084] 17-top non-cold end baffle;

[0085] 18--Air chamber rear baffle;

[0086] 19- non-cold baffle;

[0087] 20-inflatable chamber end baffle;

[0088] 21- non-cold plenum chamber front baffle;

[0089] 22-front baffle of the inflation chamber;

[0090] 23- non-cooling air deflector;

[0091] 24- cooling air guide plate;

[0092] 25- Z-shaped back support; DETAILED DESCRIPTION

[0093] The present invention is further described below with reference to the accompanying drawings and embodiments of the present invention are given.

[0094] like Figure 1 The core idea of ​​the open display depth adjustable refrigerated cabinet shown is as follows:

[0095] Firstly, by arranging the cantilevered cargo shelf plate disposed in the inner cavity of the cabinet into a retractable structure, and simultaneously arranging the bottom cargo shelf plate into a retractable structure, the cargo shelf plate can be changed in the load-bearing area as needed.

[0096] Secondly, the charging mechanism composed of the fan and the evaporator is moved from the traditional bottom setting position to the middle part of the vertical air duct of the main air duct, and is divided into a refrigeration air duct for conveying refrigeration air and an air duct for conveying non-refrigeration air through a partition structure, so that an outer non-cooling air curtain and an inner refrigeration air curtain can be formed on the display surface of the open food display cabinet; it can not only play an effective isolation and heat preservation effect, but also reduce the energy consumption of the whole machine.

[0097] The present invention is further described below in conjunction with the accompanying drawings and embodiments of the present invention are given.

[0098] Attached Figure 1 and attached Figure 2 What is given is the overall structural schematic diagram of the present invention.

[0099] As shown in the figure, the open-type refrigerated cabinet with adjustable display depth comprises: a foaming board 1 on the back of the cabinet with a main air duct 2, a bottom expandable shelf mechanism 5 arranged at the bottom of the cabinet inner cavity, and a plurality of cantilever shelf board components 6 arranged on the inner wall of the cabinet, an inflation chamber 8 and an evaporator 7 arranged in the main air duct 2, characterized in that: a cabinet inner cavity with adjustable load capacity is formed by a plurality of cantilevered retractable shelf board components 6 arranged from bottom to top on the inner wall of the cabinet and an expandable shelf mechanism 5 arranged at the bottom of the cabinet cavity, and at the same time, a double air curtain inflation mechanism capable of conveying refrigeration air and non-refrigeration air is formed by a combined fan and an evaporator 7 arranged in the middle and upper parts of the vertical air duct of the main air duct 2, thereby forming an open-type double air curtain refrigerated cabinet with adjustable display depth;

[0100] in:

[0101] The bottom expandable shelf mechanism 5 is composed of a movable foam board assembly 5.1, a support assembly and a sliding assembly. The support assembly is composed of sliding end frames 5.6 arranged on the upper left and right sides of the movable foam board assembly 5.1, bottom end frames 5.9 on the lower left and right sides, a sliding central frame 5.7 arranged at the central axis position of the movable foam board assembly 5.1, and four display board front supports 5.4 arranged on the movable foam board assembly 5.1 with the sliding central frame 5.7 as the symmetric center, and a return air vent support 5.3 is respectively arranged between the left and right groups of display board front supports 5.4; the sliding assembly is composed of a slide rail mounting member 5.2 arranged on the inner side surfaces of the two sliding end frames 5.6 arranged on the left and right sides, and a double-layer slide rail 5.5 installed on the left and right sides of the sliding central frame 5.7; and a movable rear positioning baffle 5.10 is provided on the lower bottom surface of the movable foam board assembly 5.1;

[0102] The shelf plate assembly is composed of a main shelf plate assembly 6.1 and a sub-shelf plate assembly 6.2 arranged at the rear of the main shelf plate assembly 6.1 and located below the lower plane of the main shelf plate 6.11; two side L-shaped sliding grooves 6.31 are arranged on the side frame surface of the shelf bracket fixing frame 6.3, and the main shelf plate assembly 6.1 is composed of the main shelf plate 6.11, the sliding bracket 6.12, the shelf bracket fixing piece 6.13, and the shelf lighting groove 6.14; two sliding screws 6.6 perpendicular to the sliding bracket frame surface are fixed on the side surface of the sliding bracket 6.12, and the rod body of the sliding screw 6.6 is inserted from the outside to the inside into the sliding groove 6.31 on the shelf bracket fixing frame 6.3 to form a horizontal displacement structure of the main shelf plate; the sub-shelf plate assembly 6.2 is fixed on the sub-shelf connecting plate 6.33 arranged horizontally at the rear of the shelf bracket fixing frame 6.3;

[0103] The evaporator 7 in the double air curtain charging mechanism is arranged in the middle and upper part of the main air duct 2 composed of the rear wall plate 13 in the cabinet body and the foam plate 1 on the back of the cabinet body, and a combined isolation plate is added between the rear part of the evaporator 7 and the foam plate 1 on the back of the cabinet body, so as to separate the vertical main air duct from bottom to top into a cooling air channel 2.2 passing through the evaporator body and outputting the cooling air from the upper part and a non-cooling air channel 2.1 conveying normal temperature air between the rear part of the evaporator 7 and the foam plate 1 on the back of the cabinet body; at the same time, an evaporator front baffle 16 is added in front of the evaporator 7 to form an upper part intersecting with the cooling air channel 2.2 and the side intersecting with the cabinet inner cavity 12 through the air leakage hole 13.1 on the rear wall plate 13 in the cabinet body. In addition, a combined plenum chamber 8 equipped with a plurality of fans is arranged on the upper part of the cooling air channel 2.2 and the non-cooling air channel 2.1, and the outlet of the combined plenum chamber 8 is divided into a non-cooling air output channel 2.11 and a cooling air output channel 2.21 respectively connected to the non-cooling air channel 2.1 by a plurality of partition plates; wherein the non-cooling air output channel 2.11 is connected with the non-cooling air outlet 10 arranged on the outer side below the top of the cabinet to form an outer layer of normal temperature isolation air curtain of the refrigerator, and the cooling air output channel 2.21 is connected with the cold air outlet 9 arranged on the lower top of the cabinet to form a cold air isolation air curtain located on the inner side of the outer layer of normal temperature isolation air curtain.

[0104] Through the above-mentioned creative improvements, the shelf boards in the inner cavity of the cabinet can be adaptively adjusted within the range of 350-450mm, and the bottom shelf boards can be adjusted within the range of 515-675mm; at the same time, the refrigeration air supply structure composed of the evaporator and the fan is creatively designed to be able to simultaneously transport both refrigeration air and non-refrigeration air, which are output from the corresponding air outlets arranged on the upper part of the cabinet through respective independent conveying air ducts, forming an outer layer of normal temperature air curtain and an inner layer of refrigeration air curtain at the front of the open cabinet, thereby achieving the goal of more effectively maintaining the low-temperature environment required for refrigerated food and reducing energy consumption.

[0105] Attached Figure 3 -Attached Figure 6 The following is a schematic diagram of the structure of an expandable shelf mechanism 5 provided at the bottom of the cabinet cavity involved in the technical solution.

[0106] This bottom expandable shelf mechanism 5 is composed of a movable foam board component 5.1, a support component and a sliding component. The support component is composed of sliding end frames 5.6 arranged on the upper left and right sides of the movable foam board component 5.1, bottom end frames 5.9 at the lower left and right sides, a sliding central frame 5.7 arranged at the central axis position of the movable foam board component 5.1, and four display board front supports 5.4 arranged on the movable foam board component 5.1 with the sliding central frame 5.7 as the symmetric center, and a return air vent support 5.3 is respectively arranged between the left and right groups of display board front supports 5.4; the sliding component is composed of a slide rail mounting member 5.2 arranged on the inner side surfaces of two sliding end frames 5.6 arranged on the left and right sides and a double-layer slide rail 5.5 installed on the left and right sides of the sliding central frame 5.7; and a movable rear positioning baffle 5.10 is provided on the lower bottom surface of the movable foam board component 5.1.

[0107] The bottom expandable structure of the open food refrigerator is realized by a movable foam board component 5.1. The specific implementation process is as follows: Figure 3-Figure 6 Connect the slide rail mounting member 5.2 and the sliding end frame 5.6, the slide rail mounting member 5.2 and the sliding central frame 5.7 with the double-layer slide rail 5.5, and install the slide rail mounting member 5.2 on the moving foaming board 5.1, and install the sliding end frame 5.6 on the bottom end frame 5.9 (as shown in FIG. Figure 3-Figure 4 ), at this time, the movable foaming plate 5.1 can be translated under the action of the double-layer slide rail 5.5.

[0108] like Figure 4 The front display board 5.13 is installed on the front display board support 5.4, the return air outlet 5.12 is installed on the return air outlet support 5.3, the front display board support 5.4 and the return air outlet support 5.3 are pre-installed on the movable foam board 5.1, the price list bar 5.11, the front panel 5.18 and the front panel support 5.17 are all installed on the movable foam board assembly 5.1, so that the overall mobility of the bottom structure is achieved through the movable foam board assembly 5.1. And as shown in FIG. Figure 5 As shown, when the movable foamed board stopper 5.16 is blocked by the movable foamed board stopper 5.15 and cannot move forward, the display cabinet is in a thin state.

[0109] Figure 6The display cabinet is in the wide state. The specific implementation process of achieving this state is as follows: the movable foam plate stopper 5.15 is manually pushed downward to disengage the latch of the movable stopper 5.16 under the action of external force and pulled forward. At this time, under the action of the double-layer slide rail 5.5, the bottom as a whole will move forward and be stopped by the positioning baffle 5.10 arranged outside the lower bottom surface of the movable foam plate assembly 5.1. At this time, the flap 5.19 is flipped up (the flap 5.19 is installed on the front of the foam plate 5.8 at the bottom of the cabinet body by the hinge 5.20 and the hinge mounting member 5.21), and the front panel 5.18 and the front panel support 5.17 are stuck. At this time, under the simultaneous action of the movable rear baffle 5.10 and the flap 5.19, the bottom cannot move, so that the bottom of the display cabinet is in a stretched state.

[0110] Attached Figure 7 -Attached Fig.13 It is a structural schematic diagram of a retractable shelf board assembly, wherein the shelf board assembly consists of a main shelf board assembly 6.1 and a sub-shelf board assembly 6.2 arranged at the rear of the main shelf board assembly 6.1 and located below the lower plane of the main shelf board 6.11; two side L-shaped sliding grooves 6.31 are arranged on the side frame surface of the shelf bracket fixing frame 6.3, and the main shelf board assembly 6.1 consists of the main shelf board 6.11, a sliding bracket 6.12, a shelf bracket fixing piece 6.13, and a shelf lighting groove 6.14; two sliding screws 6.6 perpendicular to the sliding bracket frame surface are fixed on the side surface of the sliding bracket 6.12, and the rod body of the sliding screw 6.6 is inserted from the outside to the inside into the sliding groove 6.31 on the shelf bracket fixing frame 6.3 to form a horizontal displacement structure of the main shelf board; the sub-shelf board assembly 6.2 is fixed on the sub-shelf connecting plate 6.33 arranged horizontally at the rear of the shelf bracket fixing frame 6.3.

[0111] Figure 7 The state shown is when the main shelf board is not extended. The shelf bracket fixing frame 6.13 is placed on the shelf bracket 6.7 by inserting the shelf bracket slot 6.71 and fixed on the shelf bracket 6.7 with screws 6.8 to prevent the shelf bracket fixing frame 6.3 from sliding when adjusting the shelf board. When the shelf bracket fixing frames 6.3 on both sides are in place, the auxiliary shelf board assembly 6.2 is fixed to the auxiliary shelf board connecting plate 6.33 at the rear of the shelf bracket fixing frame 6.3 (such as Figure 7 ), at this time, the auxiliary shelf assembly 6.2 is actually located at the rear and lower part of the entire main shelf 6.11. The sliding screw 6.6 is inserted into the sliding groove 6.31 of the shelf bracket fixing frame 6.3 and fixed to the sliding bracket 6.12 in the shelf assembly 6.1 (see Fig. 9), the sliding screw 6.6 is composed of three parts: a threaded section, a smooth cylindrical surface of the middle section and an M4 threaded rod at the tail end, which are arranged on the same rod body; at this time, the middle smooth cylindrical surface of the sliding screw 6.6 is just on the sliding groove 6.31 of the shelf bracket fixing frame 6.3, and the sliding bracket 6.12 can change the sliding position along the arc-shaped slide groove through the sliding screw 6.6. When the sliding screw 6.6 is at the high position on the right side of the sliding groove 6.31, the shelf board assembly 6.1 is lifted up, so that the entire shelf board is in the original state; and when the sliding screw 6.6 is at the low position on the left side of the arc-shaped slide groove 6.31, as the sliding bracket 6.12 moves to the left, the main shelf board 6.11 is lowered to the same plane position as the auxiliary shelf board assembly 6.2, and the entire shelf board is in the maximum load-bearing area state.

[0112] When the shelf board assembly 6.1 slides along the sliding groove 6.31 of the shelf bracket fixing frame 6.3 to the high position on the right side of the sliding groove 6.3.1 along the sliding bracket 6.12 through the sliding screw 6.6, and the barb on the shelf bracket fixing frame 6.3 is inserted into the card position square hole A6.131 of the shelf fixing plate 6.13 on the shelf board assembly 6.1, it plays the effect of preventing the shelf board assembly 6.1 from tilting upward and sliding forward. At this time, the auxiliary shelf board assembly 6.2 at the rear overlaps with the main shelf board assembly 6.1, is located below the main shelf board assembly 6.1, and is blocked by the main shelf board assembly 6.1. The auxiliary shelf board assembly 6.2 does not carry goods, so at this time only the main shelf board assembly 6.1 can carry goods, and the depth of the entire main shelf board assembly 6.1 is the original load-bearing surface; and because the LED light 6.4 and the price list bar 6.5 are installed on the main shelf board assembly 6.1, they move with the shelf board assembly 6.1, and the entire shelf board is in the original loading state.

[0113] When it is necessary to expand the loading area, as the operator pulls the shelf board assembly 6.1 outward, the sliding bracket 6.12 slides along the sliding groove 6.31 to the left low position of the sliding groove 6.31 through the sliding screw 6.6, and the barb on the shelf bracket fixing frame 6.3 is inserted into the positioning square hole 6.132 of the shelf fixing plate 6.13 on the main shelf board assembly 6.1 (to prevent the main shelf board assembly 6.1 from tilting upward and sliding forward). At this time, the main shelf board assembly 6.1 is in front of the rear auxiliary shelf board assembly 6.2 and is in the same plane as the auxiliary shelf board assembly 6.2. The auxiliary shelf board assembly 6.2 is in a state where it can carry objects. The overall shelf board loading depth is the depth of the main shelf board assembly 6.1 + the auxiliary shelf board assembly 6.2. At this time, it indicates that the loading capacity of the entire shelf board is improved, and because the LED light 6.4 and the smooth price list bar 6.5 are installed on the main shelf board assembly 6.1, they move with the entire main shelf board assembly 6.1, making the entire assembled shelf board in a wide state.

[0114] Attached Figure 1 , Attachment Figure 2 Provided is a schematic diagram of the overall structure of this new open refrigerated cabinet with adjustable display depth.

[0115] Attached Fig.14 The diagram shows the non-cold air operation circuit diagram of this open refrigerated cabinet with adjustable display depth. Fig.15 is attached Fig.14 An enlarged schematic diagram of the local structure of the inflation chamber 8.

[0116] Attached Fig.16 This is a schematic diagram of the refrigeration air operation circuit of this new open refrigerated cabinet with adjustable display depth; Fig.17 is attached Fig.16 A schematic enlarged view of a local structure of the inflation chamber 8.

[0117] Attached Fig.18 What is given is a schematic diagram of the planar distribution of the combined fan in the inflation chamber 8; Fig.19 This is a top view of the non-cold air duct; Fig. 20 This is a top view of the top cooling duct.

[0118] The combined fan is composed of a non-refrigerating air conveying fan A 8.4, a refrigerating air conveying fan B 8.2 and a refrigerating air conveying fan C 8.3; wherein the non-refrigerating air conveying fan A 8.4 is arranged in the middle position of the combined inflation chamber 8, and the refrigerating air conveying fan B 8.2 and the refrigerating air conveying fan C 8.3 are respectively arranged on the left and right sides of the non-refrigerating air conveying fan A 8.4; the non-refrigerating air conveying fan A 8.4, the refrigerating air conveying fan B 8.2 and the refrigerating air conveying fan C8.3 are separated into independent working spaces by inflation chamber end baffles 20 arranged on their respective left and right sides.

[0119] The non-cooling air conveying fan A 8.4 conveys the non-cooling air from the lower non-cooling air channel 2.1 into the upper horizontal non-cooling air output channel 2.11; the cooling air conveying fan B 8.2 and the cooling air conveying fan C8.3 convey the cooling air from the lower cooling air channel 2.2 into the upper cooling air output channel 2.21.

[0120] The non-cooling air conveying fan A 8.4 is placed on the inflation chamber mounting plate 8.1. Through the two inclined non-cooling air guide plates 23 arranged in front of the non-cooling air conveying fan A 8.4, the non-cooling air is sent out from the non-cooling air outlet 10 through the upper horizontal non-cooling air output channel 2.11 to form an outer non-cooling air curtain.

[0121] The cooling air conveying fan B 8.2 and the cooling air conveying fan C 8.3 are arranged on the inflation chamber mounting plate 8.1, and the cooling air is sent out from the cooling air outlet 9 through the upper horizontal cooling air output channel 2.21 through two sets of cooling air duct guide plates 24 respectively arranged in front of the conveying fans to form an inner cooling air curtain.

[0122] In the technical solution of the present invention, since the original inflation assembly consisting of the fan and the evaporator is moved from the bottom position of the original traditional refrigerator to the middle and upper part of the vertical main air duct 2 of the refrigerator, the bottom space of the refrigerator is minimized, the original front height of the refrigerator of 350mm is reduced to 250mm, and the front opening of the refrigerator is also expanded from the original 1415mm to 1515mm, thereby increasing the display area of ​​the refrigerator without changing the overall height of the refrigerator, and effectively reducing energy consumption during use.

[0123] At the same time, after the plenum assembly is placed on top, a non-cold upper back panel 15 and a non-cold lower back panel 14 are added between the plenum, the evaporator 7 and the foaming board 1 on the back of the cabinet, so as to form a non-cold air channel 2.1 that does not pass through the evaporator 7 and a refrigerator channel 2.2 that passes through the evaporator 7; these two separate gas channels are respectively connected with the non-cold air output channel 2.11 and the refrigerator output channel 2.21 that are arranged horizontally on the upper part of the plenum, and are respectively sent out from the corresponding non-cold air outlet 10 and the cold air outlet 9, thereby forming a double-layer air curtain in front of the cabinet display. The outer non-cold air curtain formed becomes a protective barrier for the inner refrigeration air curtain, which can effectively maintain the low temperature effect of the cabinet cavity and reduce the operating energy consumption.

[0124] In addition, by adding an evaporator front baffle 16 between the evaporator 7 and the outer layer of the cabinet inner wall, a back compensation air duct 2.3 is formed, allowing the refrigerant gas from the refrigeration air duct 2.2 to enter the air duct through the face compensation air duct 2.31 and then enter the cabinet inner cavity where the shelf board is set through the air leakage hole 13.1 set on the cabinet inner wall 13, and serve as a cold source to control the temperature inside the cabinet.

[0125] Actual use has shown that: the open refrigerated cabinet with adjustable display depth proposed according to the above technical solution can reasonably adjust the load capacity of the cabinet cavity by stretching and adjusting the load-bearing shelf boards in the cabinet according to seasonal changes and market fluctuations without changing the original external dimensions of the same type of food display cabinet, and at the same time, by arranging the fan and evaporator in the vertical air duct and converting the traditional air duct into a double air duct structure that simultaneously transports cooling air and non-cooling air, a double air curtain structure is formed on the front of the cabinet, which is extremely beneficial for maintaining the low-temperature environment in the cabinet cavity and reducing the energy consumption of the whole machine.

[0126] The above is merely a basic implementation scheme of the present invention given by the applicant based on the technical solution. Any improvements made by any ordinary technician in the industry with reference to the technical solution without substantial creativity shall be deemed to fall within the scope of protection of the present invention.

Claims

1. An open refrigerated cabinet with adjustable display depth. include: A cabinet back foam plate (1) with a main air duct (2), a bottom expandable shelf mechanism (5) arranged at the bottom of the cabinet inner cavity, and a plurality of cantilevered shelf board assemblies (6) arranged on the inner wall of the cabinet, an air charging chamber (8) and an evaporator (7) arranged in the main air duct (2), characterized in that: a cabinet inner cavity with adjustable load capacity is formed by a plurality of cantilevered retractable shelf board assemblies (6) arranged from bottom to top on the inner wall of the cabinet and an expandable shelf mechanism (5) arranged at the bottom of the cabinet cavity, and a double air curtain air charging mechanism capable of conveying refrigeration air and non-refrigeration air is formed by a combined fan and an evaporator (7) arranged in the middle and upper parts of the vertical air duct of the main air duct (2), thereby forming an open double air curtain refrigerated cabinet with adjustable display depth; in: The bottom expandable shelf mechanism (5) is composed of a movable foam board component (5.1), a support component and a sliding component. The support component is composed of sliding end frames (5.6) arranged on the upper left and right sides of the movable foam board component (5.1), bottom end frames (5.9) on the lower left and right sides, a sliding central frame (5.7) arranged at the central axis position of the movable foam board component (5.1), and four display board front supports (5.4) arranged on the movable foam board component (5.1) with the sliding central frame (5.7) as the symmetric center, and a return air vent support (5.3) is arranged between the left and right groups of display board front supports (5.4); the sliding component is composed of a slide rail mounting member (5.2) arranged on the inner side surfaces of two sliding end frames (5.6) arranged on the left and right sides, and a double-layer slide rail (5.5) installed on the left and right sides of the sliding central frame (5.7); and a movable rear positioning baffle (5.10) is provided on the lower bottom surface of the movable foam board component (5.1); The shelf board assembly is composed of a main shelf board assembly (6.1) and a sub-shelf board assembly (6.2) arranged at the rear of the main shelf board assembly (6.1) and located below the lower plane of the main shelf board (6.11); two side L-shaped sliding grooves (6.31) are provided on the side frame surface of the shelf bracket fixing frame (6.3); the main shelf board assembly (6.1) is composed of the main shelf board (6.11), the sliding bracket (6.12), the shelf bracket fixing member (6.13), the shelf lighting The sliding bracket (6.12) is composed of two sliding screws (6.6) perpendicular to the sliding bracket frame surface, and the rod body of the sliding screw (6.6) is inserted from the outside to the inside into the sliding groove (6.31) on the shelf bracket fixing frame (6.3), forming a horizontal displacement structure of the main shelf plate; the auxiliary shelf plate assembly (6.2) is fixed on the auxiliary shelf connecting plate (6.33) arranged horizontally at the rear of the shelf bracket fixing frame (6.3); The evaporator (7) in the double air curtain charging mechanism is arranged in the middle and upper part of the main air duct (2) composed of the rear wall plate (13) in the cabinet body and the foam plate (1) on the back of the cabinet body, and a combined isolation plate is added between the rear part of the evaporator (7) and the foam plate (1) on the back of the cabinet body to separate the vertical main air duct from bottom to top into a cooling air channel (2.2) passing through the evaporator body and outputting the cooling air from the upper part, and a non-cooling air channel (2.1) conveying normal temperature air between the rear part of the evaporator (7) and the foam plate (1) on the back of the cabinet body; at the same time, an evaporator front baffle (16) is added in front of the evaporator (7) to form a cooling air channel (2.2) which is connected to the cabinet body cavity (12.1) through the air leakage hole (13.1) on the rear wall plate (13) in the cabinet body. ) interpenetrating back compensation air duct (2.3); in addition, a combined plenum chamber (8) equipped with a plurality of fans is arranged on the upper part of the refrigeration air duct (2.2) and the non-refrigeration air duct (2.1), and the outlet of the combined plenum chamber (8) is divided into a non-refrigeration air output channel (2.11) and a refrigeration air output channel (2.21) respectively connected to the non-refrigeration air duct (2.1) by a plurality of partition plates; wherein the non-refrigeration air output channel (2.11) is interpenetrating with the non-refrigeration air outlet (10) arranged on the outside below the top of the cabinet to form an outer layer of normal temperature isolation air curtain of the refrigerator, and the refrigeration air output channel (2.21) is interpenetrating with the cold air outlet (9) arranged on the bottom of the top of the cabinet to form a cold air isolation air curtain located on the inner side of the outer layer of normal temperature isolation air curtain; The slide rail mounting member (5.2) and the sliding end frame (5.6), the slide rail mounting member (5.2) and the sliding central frame (5.7) are connected to the double-layer slide rail (5.5) to form a movable foam plate assembly (5.1) that can be translated along the double-layer slide rail (5.5) through the slide rail mounting member (5.2) placed on the movable foam plate assembly (5.1) at the bottom and the sliding end frame (5.6) installed on the bottom end frame (5.9); The movable foam plate assembly (5.1) is arranged along the horizontal plane of the upper edge of the cabinet body bottom foam plate (5.8), and the outer side surface of the cabinet body bottom foam plate (5.8) is provided with a flap (5.19) and a hinge (5.20) cooperating with the flap (5.19).

2. An open display depth adjustable refrigerated cabinet as claimed in claim 1, Features: The front panel body of the cabinet bottom foaming plate (5.8) is provided with a movable stopper (5.16), a front panel support (5.17) and a front panel (5.18) from the inside to the outside, and a movable foaming plate stopper (5.15) is provided at the inclined surface thereof.

3. An open display depth adjustable refrigerated cabinet as claimed in claim 1, Features: The movable foaming plate assembly (5.1) is L-shaped, and a price list bar (5.11) is provided on its outer side.

4. An open display depth adjustable refrigerated cabinet as claimed in claim 1, Features: The sliding screw (6.6) is composed of three parts: a flat screw head, a smooth cylindrical surface in the middle, and an M4 threaded rod at the tail for connecting with the sliding bracket (6.12).

5. An open display depth adjustable refrigerated cabinet as claimed in claim 1, Features: The auxiliary shelf board assembly (6.2) is composed of an auxiliary shelf board (6.21) and an auxiliary shelf board reinforcement (6.22), and is fixed to the auxiliary shelf board connecting plate (6.32) at the rear of the shelf bracket fixing frame (6.3) by screws.

6. An open display depth adjustable refrigerated cabinet as claimed in claim 1, Features: The shelf support fixing piece (6.13) is provided with a locking square hole A (6.131) and a locking square hole B (6.132).

7. An open display depth adjustable refrigerated cabinet as claimed in claim 1, Features: The shelf support fixing frame (6.3) is provided with a positioning groove (6.32) provided with a barb on the frame body located at the upper part of an L-shaped sliding groove (6.31), and the upper part of the inner groove body of the positioning groove is provided with a barb for hooking with the locking square hole (6.131) and the locking square hole B (6.132) provided on the shelf fixing plate (6.13).

8. An open display depth adjustable refrigerated cabinet as claimed in claim 1, Features: The combined isolation plate is composed of a lower non-cold back panel (14) and an upper non-cold back panel (15) which are closely attached to the outside of the evaporator (7). The two are fixed on a common Z-shaped back support (25) which is closely attached to the outside of the evaporator (7). The Z-shaped back support (25) is fixed on the foam plate (1) on the back of the cabinet. At the same time, the upper part of the upper non-cold back panel (15) is in contact with the top foam plate in the cabinet, and a ventilation hole which is connected to the combined inflation chamber (8) is provided on the upper plate surface of the upper non-cold back panel (15).

9. The open display depth adjustable refrigerated cabinet as claimed in claim 1, Features: The combined air-filled chamber (8) is provided with three fans: a non-refrigerating air conveying fan A (8.4), a refrigerating air conveying fan B (8.2) and a refrigerating air conveying fan C (8.3); wherein the non-refrigerating air conveying fan A (8.4) is arranged in the middle of the combined air-filled chamber (8), and the refrigerating air conveying fan B (8.2) and the refrigerating air conveying fan C (8.3) are arranged on the left and right sides of the non-refrigerating air conveying fan A (8.4) respectively; the non-refrigerating air conveying fan A (8.4), the refrigerating air conveying fan B (8.2) and the refrigerating air conveying fan C (8.3) are arranged on the left and right sides of the non-refrigerating air conveying fan A (8.4) respectively. B (8.2) and the cooling air conveying fan C (8.3) are separated into independent working spaces by the inflation chamber end baffles (20) arranged on the left and right sides thereof; the non-cooling air conveying fan A (8.4) delivers the non-cooling air from the lower non-cooling air channel (2.1) into the horizontally arranged non-cooling air output channel (2.11); the cooling air conveying fan B (8.2) and the cooling air conveying fan C (8.3) deliver the cooling air from the lower cooling air channel (2.2) into the cooling air output channel (2.21).

10. The open display depth adjustable refrigerated cabinet as claimed in claim 1, Features: The non-cooling air conveying fan A (8.4) is placed on the inflation chamber mounting plate (8.1), and the non-cooling air is sent out from the non-cooling air outlet (10) through two inclined non-cooling air guide plates (23) arranged in front of the non-cooling air conveying fan A (8.4) to form an outer non-cooling air curtain.

11. An open display depth adjustable refrigerated cabinet as claimed in claim 1, Features: The cooling air delivery fan B (8.2) and the cooling air delivery fan C (8.3) are arranged on the inflation chamber mounting plate (8.1), and the cooling air is delivered from the cooling air outlet (9) through two sets of cooling air duct guide plates (24) respectively arranged in front of the delivery fans to form an inner cooling air curtain.

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