CN217303312U

CN217303312U - Novel take freezer system of automatic defrosting function

Info

Publication number: CN217303312U
Application number: CN202220932949.5U
Authority: CN
Inventors: 薛星杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-08-26
Anticipated expiration: 2032-04-21

Abstract

The utility model relates to the technical field of refrigeration, and provides a novel refrigeration house system with an automatic defrosting function, which comprises a controller, a compressor, a four-way solenoid valve, a condenser, a liquid storage device, a filter, at least two evaporator branches, a return air filter and a main drainage tank, condenser, reservoir, filter are series connection in proper order, each evaporimeter branch road of parallel connection between the filter other end and the return-air filter, each evaporimeter branch road all includes evaporimeter, solenoid valve, expansion valve, first control valve, second control valve, relief valve and check valve, and the filter other end, solenoid valve, expansion valve, evaporimeter, check valve and return-air filter are series connection in proper order, and the controller is used for the reversing of timing control four-way solenoid valve in order to realize refrigeration and defrosting mode switching and control each evaporimeter branch road and carry out cascaded grouping continuous defrosting. The utility model provides a current freezer system that has multiunit refrigeration have the defrosting degree of difficulty big, the slow problem of speed.

Description

Novel take freezer system of automatic defrosting function

Technical Field

The utility model relates to a refrigeration technology field, in particular to novel take freezer system of automatic defrosting function.

Background

Because the surface of the evaporator in the cold storage is frosted, the conduction and the emission of cold energy of a refrigeration evaporator (pipeline) are obstructed, and the refrigeration effect is finally influenced. When the thickness of the frost layer (ice layer) on the surface of the evaporator reaches a certain degree, the refrigeration efficiency even drops below 30%, resulting in a large waste of electric energy and a shortened service life of the refrigeration system.

The defrosting mode of the existing refrigeration house mainly comprises the following steps: hot gas defrosting (hot fluorine defrosting, hot ammonia defrosting), water spray defrosting, electrical defrosting, mechanical (manual) defrosting and the like. The hot air defrosting is suitable for defrosting of large, medium and small-sized cold storage rack pipes, hot high-temperature gaseous condensing agent directly enters an evaporator without flow interception, and the temperature of the evaporator rises again to promote the melting or subsequent peeling of the joint of a frosting layer and the cold row. The hot gas defrosting is economical and reliable, the maintenance and the management are convenient, and the investment and the construction difficulty are not large. However, there are many proposals for hot gas defrosting, and it is common practice to send the high-pressure and high-temperature gas discharged from the compressor to an evaporator to release heat for defrosting, and then to let the condensed liquid enter another evaporator to absorb heat for evaporation to become low-temperature and low-pressure gas, and then to return to the compressor suction port to complete a cycle. However, the refrigeration house system with the hot gas defrosting function is complex, and one group of refrigeration needs two evaporators, so that the cost is high. Therefore, the applicant designs a low-cost refrigeration house system with an automatic defrosting function. However, when the refrigeration system is applied to a plurality of groups of refrigerated medium-large refrigerators, due to the fact that the refrigerant distribution of the plurality of groups of refrigerated medium-large refrigerators is not very uniform and the frosting degree of the surface of each group of evaporators in the use process is different, if the plurality of groups of refrigerated medium-large refrigerators are executed according to a unified standard and defrosting is carried out at the same time, the pressure of some evaporators is too low to cause protection, and if the pressure of the evaporators is adjusted to be too low to cause protection, the evaporators cannot be protected.

SUMMERY OF THE UTILITY MODEL

Therefore, to foretell problem, the utility model provides a novel take automatic defrosting function's freezer system that is rational in infrastructure, convenient to use, reducible multiunit refrigerated freezer storehouse temperature is undulant, accelerates multiunit refrigeration defrosting speed.

In order to solve the technical problem, the utility model discloses take following scheme: a novel refrigeration storage system with an automatic defrosting function comprises a controller, a compressor, a four-way solenoid valve, a condenser, a liquid storage device, a filter, at least two evaporator branches, an air return filter and a total drainage tank, wherein four interfaces of the four-way solenoid valve are respectively connected with the condenser, the air return filter and an air suction port and an air exhaust port of the compressor, the condenser, the liquid storage device and the filter are sequentially connected in series, the other end of the filter and the air return filter are connected in parallel with each evaporator branch, the total drainage tank is used for collecting and draining water generated by defrosting of each evaporator branch, each evaporator branch comprises an evaporator, a solenoid valve, an expansion valve, a first control valve, a second control valve, a pressure relief valve and a one-way valve, the other end of the filter, the solenoid valve, the expansion valve, the evaporator, the one-way valve and the air return filter are sequentially connected in series, the controller is used for controlling the reversing of the four-way electromagnetic valve in a timing mode to realize the switching of the refrigeration mode and the defrosting mode and controlling each evaporator branch to carry out grouping and alternate continuous defrosting.

The improved compressor further comprises an oil separator which is arranged between the compressor and the four-way electromagnetic valve.

In a further improvement, the main water discharge groove is provided with a heating wire, and the heating wire is electrically connected with the controller.

In a further improvement, the evaporators of all the evaporator branches are respectively provided with a double-fin aluminum calandria with an integrated water tank, and the integrated water tank is communicated with a main water drainage tank.

In a further improvement, the first control valve is any one of a one-way valve or a two-way solenoid valve.

In a further improvement, the second control valve is a two-way solenoid valve or a combination of a one-way valve and a solenoid valve in series.

The defrosting temperature probes are respectively arranged on pipelines between the evaporator and the expansion valve of each evaporator branch and are electrically connected with the controller.

By adopting the technical scheme, the beneficial effects of the utility model are that: the device is characterized in that a plurality of evaporator branches are arranged, the parallel pipeline arrangement of a first control valve in each evaporator branch can eliminate the problem of low and slow hot air flux of a solenoid valve and an expansion valve so as to improve the hot air flux, meanwhile, the first control valve is used as a main path to quickly send hot air to a condenser by using the solenoid valve and the expansion valve as auxiliary paths so as to accelerate defrosting speed, when a controller is switched to a defrosting mode, each evaporator branch is controlled to carry out grouping and each group of refrigeration for continuous defrosting in turn, each evaporator branch is provided with a pressure release valve and a second control valve so as to effectively adjust the evaporator pressure of the other evaporator branches in the defrosting in turn so as to avoid the influence of overhigh pressure of a reflux filter, and simultaneously, a plurality of evaporator branches are arranged to defrost the refrigeration of each group so as to reduce the fluctuation of the storage temperature of a plurality of groups of refrigeration, so that timed automatic defrosting is realized, the energy consumption is low, the structure is reasonable, and the use is convenient, The multi-group refrigeration defrosting speed is accelerated, and the refrigeration defrosting device is suitable for various refrigeration equipment such as air-cooled refrigerators, freezers and the like, and can be widely popularized and applied.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is an electrical schematic diagram of the refrigeration storage system according to the embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments, wherein the driving mechanism, the controller, the chuck and the grinder are all conventional structural components, and thus the detailed structure of these structural components will not be described in detail in the following embodiments.

Referring to fig. 1 and 2, the preferred novel refrigeration storage system with automatic defrosting function of the present invention comprises a controller, a compressor 1, an oil separator 2, a four-way solenoid valve 3, a condenser 4, a liquid reservoir 5, a filter 6, three evaporator branches, a return air filter 7, a total water drainage tank 8 and three defrosting temperature probes 16, wherein four interfaces of the four-way solenoid valve 3 are respectively connected with the condenser 4, the return air filter 7 and an air suction port and an air exhaust port of the compressor 1, the oil separator 2 is arranged between the compressor 1 and the four-way solenoid valve 3, the condenser 4, the liquid reservoir 5 and the filter 6 are sequentially connected in series, each evaporator branch is connected in parallel between the other end of the filter 6 and the return air filter 7, the total water drainage tank 8 is used for collecting and draining water generated by defrosting of each evaporator branch, the total water drainage tank 8 is provided with a heating wire 81, the heating wire 81 is electrically connected with the controller, when the controller executes a defrosting program, the heating wire 81 works to heat the frost water to avoid the frost water from forming ice, each evaporator branch comprises an evaporator 9, a solenoid valve 10, an expansion valve 11, a first control valve 12, a second control valve 13, a pressure release valve 14 and a one-way valve 15, the evaporator 9 of each evaporator branch is respectively provided with a double-fin aluminum calandria with an integrated water tank 91, the heating wire is arranged in the integrated water tank 91, the integrated water tank 91 is communicated with a main water drainage tank 8, the other end of the filter 6, the solenoid valve 10, the expansion valve 11, the evaporator 9, the one-way valve 15 and the return air filter 7 are sequentially connected in series, the first control valve 12 is connected with the solenoid valve 10 and the expansion valve 11 in parallel and allows fluid to flow from the evaporator 9 to the filter 6, the second control valve 13, the pressure release valve 14 and the one-way valve 15 are respectively connected in parallel and allow fluid to flow from the evaporator 9 to the return air filter 7 through the one-way valve 15, the fluid can also flow to the evaporator 9 from the return air filter 7 through the pressure relief valve 14 or the second control valve 13, the first control valve 12 and the second control valve 13 are both two-way solenoid valves, each defrosting temperature probe 16 is installed on the pipeline between the evaporator 9 and the expansion valve 11 of each evaporator branch and is electrically connected with the controller, the defrosting temperature probe 16 is in contact with the outer wall of the pipeline between the expansion valve 11 and the evaporator 9, when the temperature is higher than a preset temperature (for example, 12 degrees), frost is basically removed, at the moment, the controller stops executing a defrosting program, the controller comprises an MCU and a corresponding I/O interface, the controller is provided with a time relay for controlling the defrosting time length, the time of the time relay can be adjusted, for example, 0-120 minutes and the like, the controller is used for controlling the four-way solenoid valve 3 to change over in a timing mode so as to realize the refrigeration and defrosting mode switching, and controlling each evaporator branch to refrigerate and cool each group And carrying out grouping and rotating for continuous defrosting.

The utility model discloses the quantity of well evaporimeter branch road can come from by the adjustment setting according to the size of freezer and the refrigerating system group number demand of freezer, first control valve still can be the check valve, the combination can be established ties for check valve and solenoid valve for the second control valve.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a novel take freezer system of automatic defrosting function which characterized in that: including controller, compressor, four-way solenoid valve, condenser, reservoir, filter, two at least evaporimeter branches, return-air filter and total water drainage tank, four interfaces of four-way solenoid valve connect the induction port and the gas vent of condenser, return-air filter and compressor respectively, condenser, reservoir, filter are series connection in proper order, each evaporimeter branch of parallel connection between the filter other end and the return-air filter, total water drainage tank is used for collecting the water that each evaporimeter branch defrosting produced and arranges, and each evaporimeter branch all includes evaporimeter, solenoid valve, expansion valve, first control valve, second control valve, relief valve and check valve, and the filter other end, solenoid valve, expansion valve, evaporimeter, check valve and return-air filter are series connection in proper order, and first control valve is parallelly connected with solenoid valve and expansion valve and allows fluid to flow to the filter by the evaporimeter, the second control valve, the pressure release valve and the one-way valve are respectively connected in parallel and allow fluid to flow from the evaporator to the return air filter through the one-way valve, the fluid can also flow from the return air filter to the evaporator through the pressure release valve or the second control valve, the controller is used for controlling the four-way electromagnetic valve to change direction in a timing mode so as to realize switching between a refrigeration mode and a defrosting mode, and the controller controls each evaporator branch to perform grouping and alternate continuous defrosting.

2. The novel refrigeration storage system with the automatic defrosting function according to claim 1, characterized in that: the oil separator is arranged between the compressor and the four-way electromagnetic valve.

3. The novel refrigeration storage system with the automatic defrosting function according to claim 1, characterized in that: the main drainage tank is provided with a heating wire, and the heating wire is electrically connected with the controller.

4. The novel refrigeration storage system with the automatic defrosting function according to claim 1 or 3, characterized in that: the evaporators of all the evaporator branches are respectively provided with a double-fin aluminum calandria with an integrated water tank, and the integrated water tank is communicated with a main water drainage tank.

5. The novel refrigeration storage system with the automatic defrosting function according to claim 1, characterized in that: the first control valve is any one of a one-way valve or a two-way solenoid valve.

6. The novel refrigeration storage system with the automatic defrosting function according to claim 1, characterized in that: the second control valve is a two-way electromagnetic valve or a combination of a one-way valve and an electromagnetic valve in series.

7. The novel refrigeration storage system with the automatic defrosting function according to claim 1, characterized in that: the defrosting device also comprises a plurality of defrosting temperature probes, and each defrosting temperature probe is respectively arranged on a pipeline between the evaporator of each evaporator branch and the expansion valve and is electrically connected with the controller.