CN115200282A

CN115200282A - Grid cabinet

Info

Publication number: CN115200282A
Application number: CN202210732549.4A
Authority: CN
Inventors: 薛强; 苏功兵; 陈立博; 王长征; 王致家; 刘巍; 朱光祖
Original assignee: Qingdao Aucma Cold Chain Integration Co Ltd
Current assignee: Qingdao Aucma Cold Chain Integration Co Ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-10-18
Anticipated expiration: 2042-06-27
Also published as: CN115200282B

Abstract

The invention relates to the technical field of a grid cabinet, in particular to a grid cabinet with a refrigerating function, which comprises a cabinet body, a controller arranged at the top of the cabinet body and a double-compressor refrigerating system controlled by the controller to operate, wherein the double-compressor refrigerating system comprises a first compressor, a second compressor, a condenser and an evaporator, and the first compressor and the second compressor are respectively and independently connected with the same condenser and the same evaporator. Two sides of the cabinet body are respectively provided with a storage chamber, and an upward air channel is arranged between the storage chambers. An evaporator is arranged on the inner bottom wall of the ascending air duct, and an evaporation fan is arranged above the evaporator. Be equipped with a plurality of storage lattices that set up from last to lower layering in the locker, all be equipped with the vent on the roof of storage lattice and the curb plate that is close to upgoing wind channel one side. The storage lattices are communicated with each other through the ventilation openings and the storage lattices and the ascending air duct. The refrigerating system not only saves energy and reduces noise, but also optimizes the design of the air duct and effectively improves the temperature uniformity in the cabinet.

Description

Grid cabinet

Technical Field

The invention relates to the technical field of a grid cabinet, in particular to a grid cabinet with a refrigeration function.

Background

With the continuous acceleration of the global economic integration process, trade barriers among countries are continuously eliminated, international trade and domestic trade activities are increasingly active, production, management and social activities tend to be efficient and fast, and time value is more and more important. The express logistics industry is developing vigorously along with the generation.

In order to improve the tail-end distribution efficiency and solve the problem that time nodes of couriers and consumers are asymmetric, lattice cabinets such as intelligent express cabinets, take-out cabinets and automatic sales cabinets gradually become the main delivery mode of express delivery for the last kilometer. Currently, most of the ubiquitous grid cabinets are normal-temperature cabinets and do not have a refrigeration function. Therefore, the fresh food can only be expected to stop, and other foods stored in the cabinet need to be taken out in time, otherwise the fresh food is easy to deteriorate due to high temperature. In order to prolong the shelf life of food stored in a grid cabinet and meet the preservation requirements of various foods, the grid cabinet with a refrigeration function is urgently needed.

Chinese utility model patent specification CN204739828U discloses a check cabinet inner bag, and this inner bag is separated for the horizontal storing compartment that runs through of a plurality of rows, and arbitrary adjacent two are provided with the wind channel between the storing compartment, set up the air intake in intercommunication wind channel and the air outlet that corresponds at two inside walls of every storing compartment, and the bottom of inner bag sets up the fan in intercommunication wind channel and establishes heater or the refrigerator in the fan top. On one hand, the cold air is settled downwards, and the fan is arranged below the temperature control device to blow upwards, so that the temperature of the upper space and the lower space of the inner container of the grid cabinet is uneven; on the other hand, only the two side walls of the storage compartments are provided with the air inlets and the air outlets, so that air between the storage compartments which are arranged side by side up and down cannot circulate. Therefore, the temperature in each storage compartment and each storage compartment is not uniform, which is not favorable for food preservation.

Disclosure of Invention

The invention aims to provide a grid cabinet, which effectively solves the problem of poor uniformity of temperature in the grid cabinet with a refrigeration function.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a grid cabinet, includes the cabinet body and locates the controller at cabinet body top, still includes the two compressor refrigerating system who is controlled the operation by the controller, two compressor refrigerating system include first compressor, second compressor, condenser and evaporimeter, the condenser is equipped with two inlet ends, is connected with the blast pipe of first compressor and the blast pipe of second compressor respectively, the evaporimeter is equipped with two ends of giving vent to anger, is connected with the muffler of first compressor and second compressor respectively.

The first compressor, the second compressor and the condenser are arranged at the top of the cabinet body.

The cabinet body is characterized in that two storage chambers are respectively arranged on two sides of the cabinet body, and an upward air duct is arranged between the storage chambers.

And a temperature sensor electrically connected with the controller, the evaporator fixed on the inner bottom wall of the upward air duct and an evaporation fan positioned above the evaporator are arranged in the upward air duct.

Be equipped with a plurality of storage lattices that set up from last to layering down in the storage chamber, all be equipped with the vent on the roof of storage lattice and the curb plate that is close to last wind channel one side, communicate each other through the vent between the storage lattice and between storage lattice and the last wind channel.

Further, temperature sensor includes indoor temperature sensor and changes white temperature sensor, indoor temperature sensor is unsettled to be set up in the upper portion of going upward the wind channel, it sets up in the upper portion of evaporimeter to change white temperature sensor unsettled.

Furthermore, the exhaust pipes of the first compressor and the second compressor are connected with electromagnetic valves electrically connected with the controller, the electromagnetic valves are connected with the air inlet end of the condenser, the exhaust pipe of the compressor and the defrosting heat supply pipe through three-way pipe fittings in a branching mode, and the other end of the defrosting heat supply pipe is connected with the air inlet end of the evaporator.

Furthermore, a heating wire is arranged at the inner top end of the ascending air duct and electrically connected with the controller.

Furthermore, the storage lattice and the upward air duct are provided with foaming doors for opening and closing corresponding openings.

Furthermore, the foaming door of the upward air channel is embedded with a display screen for receiving signals, the display screen is in communication connection with the controller, and the display screen transmits the received signals to the controller.

Furthermore, four corners of the outer bottom wall of the cabinet body are respectively provided with feet.

Further, the upward air duct is located in the middle of the cabinet body.

The beneficial effects of the invention are:

(1) Through using two compressor refrigerating system, with the same evaporimeter of independent connection respectively of two compressor of little discharge capacity and same condenser, through two compressors double-in double-out, guarantee refrigeration temperature, and then effectively reduce refrigerating system operating noise, practice thrift the energy consumption.

(2) Through optimizing the wind channel design, will go upward the wind channel and set up between the storing room, on being fixed in the interior diapire that goes upward the wind channel with the evaporimeter, all be equipped with the vent on the roof of each matter storage lattice and the curb plate that is close to upward wind channel one side, realize air conditioning and at the circulation of wind channel left and right sides, improved temperature uniformity in the cabinet, the upper and lower difference in temperature is no longer than 2 ℃ in making the cabinet.

(3) The air inlet end of the condenser, the exhaust pipe of the compressor and the defrosting heat supply pipe are connected through three-way pipe branches, and the other end of the defrosting heat supply pipe is connected with the air inlet end of the evaporator. When the evaporimeter need change the frost, the solenoid valve is opened, and the compressor exhaust hot gas is direct to the evaporimeter through the heating supply line, realizes steam defrosting, compares in the heater strip defrosting, is favorable to practicing thrift the energy consumption.

(4) Through the heater strip of installation at the interior top of ascending wind channel, when the temperature was crossed lowly in the cabinet, through the self-heating function, can effectively ensure required temperature in the cabinet, realize winter when outdoor ambient temperature is less than 0 ℃, still can guarantee cold-stored temperature in the cabinet.

Drawings

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a front view of a cubicle cabinet of the present invention.

Fig. 2 is a top view of the internal structure of the light box of fig. 1.

Fig. 3 is a perspective view of the internal structure of the cabinet of fig. 1 (with the top panel of each storage compartment in the right-hand storage compartment omitted) (with the arrows indicating the direction of air flow).

Fig. 4 is an indicative view of a refrigeration cycle line and a hot gas defrost line of the dual compressor refrigeration system of the present invention.

Detailed Description

As shown in fig. 1-3, a grid cabinet includes a cabinet body 1, a controller 2 disposed at the top of the cabinet body, a temperature sensor electrically connected to the controller 2, and a dual-compressor refrigeration system controlled by the controller 2 to operate.

The dual-compressor refrigeration system comprises a first compressor 31, a second compressor 32, a condenser 4 and an evaporator 5, as shown in fig. 4, the condenser 4 is provided with two air inlet ends which are respectively connected with an exhaust pipe of the first compressor 31 and an exhaust pipe of the second compressor 32, and the evaporator 5 is provided with two air outlet ends which are respectively connected with an air return pipe of the first compressor 31 and an air return pipe of the second compressor 32. The first compressor 31 and the second compressor 32 are independently connected to the same condenser 4 and the same evaporator 5. Namely, the first compressor 31 and the second compressor 32 are operated independently without mutual influence. Under the control of the controller 2, the first compressor 31 and the second compressor 32 are in-and-out, and the stable operation of the refrigeration system is ensured. The dual-compressor refrigeration system of the present embodiment can perform conversion of the refrigerating or freezing function according to the user's needs. The specific connection mode of the double-compressor refrigeration system can be realized by adopting the prior art. In this embodiment, the first compressor 31 and the second compressor 32 both use small displacement compressors to achieve or even exceed the working effect of a single large displacement compressor, thereby achieving the purpose of energy saving and noise reduction.

As shown in fig. 1 and 2, the controller 2, the first compressor 31, the second compressor 32 and the condenser 4 are disposed at the top of the cabinet 1, preferably, an openable and closable light box 6 is disposed at the top of the cabinet 1, and the controller 2, the first compressor 31, the second compressor 32 and the condenser 4 are disposed in the light box 6.

As shown in fig. 3, the cabinet body 1 is sequentially provided with three chambers from left to right, and the three chambers respectively include storage chambers 7 located at two sides of the cabinet body and an upward air duct 8 located between the storage chambers. Preferably, the ascending air duct 8 is located at the middle position of the cabinet 1. A temperature sensor, an evaporator 5 fixed on the inner bottom wall of the ascending air duct 8 and an evaporation fan 6 arranged above the evaporator 5 are arranged in the ascending air duct 8. The evaporation fan 6 can suck the cool air at the bottom of the ascending air duct 8 to the top, thereby promoting the circulation of the internal air.

As shown in fig. 3, the storage chamber 7 is provided with a plurality of storage compartments 9 arranged in layers from top to bottom, and each layer of each storage chamber has only one storage compartment 9. The volume size of matter storage lattice 9 can be designed according to the actual demand, and in this embodiment, the volume of matter storage lattice 9 is from last to lower grow gradually. A top plate vent 11 is arranged on a top plate 10 of each storage lattice 9, and a side plate vent 13 is arranged on a side plate 12 of each storage lattice 9 close to one side of the ascending air duct 8. Preferably, the ceiling vents 11 between the respective storage compartments 9 in each storage chamber 7 are disposed opposite to each other. The storage lattices 9 and the ascending air duct 8 are communicated with each other through a top plate ventilation opening 11 and a side plate ventilation opening 13. The size of the roof vents 11 and the side vents 13 can be designed according to actual requirements. The evaporation fan 6 sucks air, and the air conditioning around 5 evaporators is sucked from bottom to top, and when the air conditioning arrives 8 tops of the upward air ducts, the air conditioning sinks, and the air conditioning enters the storage lattices 9 through the side plate ventilation openings 13, and then circulates downwards through the top plate ventilation openings 11 of the adjacent storage lattices 9 and finally returns to the bottoms of the evaporators 5. The cold air circulates at the left side and the right side of the ascending air duct 8, so that the temperature uniformity in the cabinet is improved, and the temperature difference between the upper side and the lower side in the cabinet is not more than 2 ℃.

Further, the temperature sensors include an indoor temperature sensor 15 and a defrosting temperature sensor 14. Indoor temperature sensor 15 is unsettled to be set up in the upper portion of going upward wind channel 8, can the temperature in the real-time detection cabinet to send the temperature value to controller 2, by the operation of controller 2 control dual compressor refrigerating system, thereby guarantee the stability of temperature in the cabinet. The defrosting temperature sensor 14 is suspended at the upper part of the evaporator 5, monitors the surface frosting condition of the evaporator 5 in real time, transmits the detected temperature value to the controller 2, and controls the opening or closing of the hot defrosting function by the controller 2.

Referring to fig. 4, specifically, in order to realize the function of hot defrosting, the exhaust pipes of the first compressor 31 and the second compressor 32 are both connected with an electromagnetic valve 16 electrically connected with the controller 2, the electromagnetic valve 16 is connected with the air inlet end of the condenser 4, the exhaust pipes of the

compressors

31 and 32 and the defrosting heat supply pipe 19 through three-way pipe branches, and the other end of the defrosting heat supply pipe 19 is connected with the air inlet end of the evaporator 5. When the hot air defrosting function needs to be started, the controller 2 controls the electromagnetic valve 16 to be opened, at the moment, the conventional refrigeration cycle pipeline is closed, the hot air defrosting pipeline is opened, and hot air exhausted by the two compressors directly reaches the evaporator 5 through the heat supply pipe to realize hot air defrosting; when the defrosting temperature sensor 14 senses that defrosting is finished, a signal is transmitted to the controller 2, the controller 2 controls the electromagnetic valve 16 to be closed, at the moment, the hot gas defrosting pipeline is closed, the conventional refrigeration cycle pipeline is opened, hot gas discharged by the two compressors enters the condenser 4, and the refrigeration cycle is restarted. The embodiment utilizes the hot gas of compressor exhaust to change the frost, compares the conventional heater strip and changes the frost alone, can solve the heater strip and change the problem that the frost power is big, realizes energy saving and consumption reduction.

Further, when the outdoor temperature can meet the refrigeration temperature in winter and the interior of the grid cabinet is in a refrigeration mode, the compressor stops working, and at the moment, the temperature in the grid cabinet is the same as the outdoor temperature. When the outdoor temperature is lower than the set value of the refrigerating temperature, in order to realize the refrigerating temperature in the lattice cabinet, preferably, a heating wire 17 is installed at the inner top end of the ascending air duct 8, and the heating wire 17 is electrically connected with the controller 2. When the temperature in the cabinet detected by the indoor temperature sensor 15 is lower than the set value of the refrigerating temperature, the controller 2 controls the heating wire 17 to be started to start heating, and then the refrigerating temperature in the grid cabinet is ensured.

Because the check cabinet of this embodiment has the refrigeration function, preferably, all be equipped with on matter storage 9 and the last wind channel 8 and be used for opening and close the foaming door of corresponding opening. Further, in order to facilitate the use of the user, a display screen 18 for receiving a user signal is embedded in the foaming door of the upstream air duct 8, the display screen 18 is in communication connection with the controller 2, the display screen 18 transmits the received signal to the controller 2, and then the controller 2 controls corresponding components to realize corresponding functions. In addition, feet are arranged at four included angles of the outer bottom wall of the cabinet body 1 of the grid cabinet, preferably, the feet are caster wheels 20 with supporting feet, when the grid cabinet needs to move, the supporting feet are folded, and the caster wheels 20 land, so that the grid cabinet can be conveniently pushed; when the grid cabinet reaches the designated position, the supporting legs are grounded, and the caster wheels 20 are lifted off the ground, so that the stability of the grid cabinet is ensured. When the grid cabinet needs to be placed outdoors, preferably, the foot reinforcing body 21 is additionally arranged on the supporting leg of the caster 20, and the foot reinforcing body 21 is fixed on the ground through the expansion bolt, so that the stability of the grid cabinet is further ensured, and the grid cabinet is prevented from being blown down by strong wind.

The grid cabinet of the embodiment is put into a laboratory to be electrified, the refrigeration mode is adjusted to be freezing, ice cream, boiled dumplings and mutton rolls are respectively put into each layer of storage grid 9, the temperature detection distribution points in the cabinet, the ambient temperature detection distribution points, the temperature detection distribution points of the evaporator 5 and the product running noise detection are respectively carried out, and the experimental result shows that the running noise of the double-compressor refrigeration system of the grid cabinet of the embodiment is far lower than that of the single-compressor refrigeration system. And then, taking out the articles, replacing the articles with vegetables, adjusting the refrigeration mode to be cold storage, checking the measurement result of each temperature detection point in the cabinet, and finding that the temperature difference of each temperature detection point is small, the temperature difference between the upper part and the lower part in the cabinet does not exceed 2 ℃, so that a certain proportion of balance points are reached. Further, the hot-gas defrosting function is started, and the temperature of the evaporator 5 is detected to be increased, so that the hot-gas defrosting is effective. Finally, the environmental temperature of the laboratory is reduced to-20 ℃, the temperature in the grid cabinet is set as the refrigeration temperature of 10 ℃, the heating wire 17 is started, and after a certain time, the temperature of the distribution point in the cabinet is checked to reach the set temperature.

The parts which are not described in the invention can be realized by adopting or referring to the prior art.

It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.

Claims

1. A grid cabinet comprises a cabinet body and a controller arranged at the top of the cabinet body, and is characterized in that,

the double-compressor refrigeration system is controlled by the controller to operate and comprises a first compressor, a second compressor, a condenser and an evaporator, wherein the condenser is provided with two air inlet ends which are respectively connected with an exhaust pipe of the first compressor and an exhaust pipe of the second compressor, and the evaporator is provided with two air outlet ends which are respectively connected with an air return pipe of the first compressor and an air return pipe of the second compressor;

the first compressor, the second compressor and the condenser are arranged at the top of the cabinet body;

two sides of the cabinet body are respectively provided with a storage chamber, and an ascending air duct is arranged between the storage chambers;

a temperature sensor electrically connected with the controller, the evaporator fixed on the inner bottom wall of the ascending air duct and an evaporation fan positioned above the evaporator are arranged in the ascending air duct;

be equipped with a plurality of from last matter storage lattice to the layering setting down in the matter storage room, all be equipped with the vent on the roof of matter storage lattice and the curb plate that is close to the air duct one side of going upward, communicate each other through the vent between the matter storage lattice and between matter storage lattice and the air duct of going upward.

2. The cubicle cabinet of claim 1, wherein the temperature sensor comprises an indoor temperature sensor and a defrosting temperature sensor, the indoor temperature sensor is arranged on the upper portion of the ascending air duct in a hanging mode, and the defrosting temperature sensor is arranged on the upper portion of the evaporator in a hanging mode.

3. The grid cabinet according to claim 2, wherein the exhaust pipes of the first and second compressors are connected with solenoid valves electrically connected with the controller, the solenoid valves are connected with the air inlet end of the condenser, the exhaust pipe of the compressor and the defrosting heat supply pipe through three-way pipe branches, and the other end of the defrosting heat supply pipe is connected with the air inlet end of the evaporator.

4. The cabinet as claimed in claim 1, wherein the inner top end of the up wind duct is provided with a heating wire, and the heating wire is electrically connected with the controller.

5. A cubicle cabinet according to any of claims 1-4, wherein both the storage compartment and the up-wind duct are provided with a foaming door for opening and closing the respective opening.

6. The cabinet as claimed in claim 5, wherein the foam door of the up wind channel is embedded with a display screen for receiving signals, the display screen is in communication with the controller, and the display screen transmits the received signals to the controller.

7. A cubicle cabinet according to claim 1, wherein four corners of the outer bottom wall of the cabinet body are provided with feet, respectively.

8. The cabinet as claimed in claim 1, wherein the up wind duct is located at a middle position of the cabinet body.