阅读说明：本技术 载冷剂制冷系统及模块化冰箱 (secondary refrigerant refrigerating system and modular refrigerator ) 是由 陈开松 魏邦福 刘全义 于 2019-09-24 设计创作，主要内容包括：本发明公开了载冷剂制冷系统及模块化冰箱,涉及冰箱制冷技术领域。本发明包括板式蒸发器、低温阀、换热装置、载冷剂循环泵、压缩机、冷凝器、过滤器以及毛细管；板式蒸发器的第一进口与载冷剂循环泵的出口连通；板式蒸发器的第一出口经低温阀与换热装置的进口连通；所述换热装置的出口与载冷剂循环泵的进口连通。本发明通过第一模块化冰箱内安装第一换热装置,第二模块化冰箱内安装第二换热装置,第三模块化冰箱内安装第三换热装置；同时,板式蒸发器经低温阀的三出口分别与第一换热装置、第二换热装置以及第三换热装置连通；实现了模块化冰箱不同间室内的制冷,实现不同间室间的制冷组合,实现多种制冷需求,组合多样性强。(the invention discloses a secondary refrigerant refrigerating system and a modular refrigerator, and relates to the technical field of refrigerator refrigeration. The invention comprises a plate evaporator, a low-temperature valve, a heat exchange device, a secondary refrigerant circulating pump, a compressor, a condenser, a filter and a capillary tube; the first inlet of the plate-type evaporator is communicated with the outlet of the secondary refrigerant circulating pump; a first outlet of the plate-type evaporator is communicated with an inlet of the heat exchange device through a low-temperature valve; and the outlet of the heat exchange device is communicated with the inlet of the secondary refrigerant circulating pump. According to the invention, a first heat exchange device is arranged in a first modularized refrigerator, a second heat exchange device is arranged in a second modularized refrigerator, and a third heat exchange device is arranged in a third modularized refrigerator; meanwhile, the plate-type evaporator is respectively communicated with the first heat exchange device, the second heat exchange device and the third heat exchange device through three outlets of the low-temperature valve; the refrigeration in different rooms of the modularized refrigerator is realized, the refrigeration combination between different rooms is realized, various refrigeration requirements are realized, and the combination diversity is strong.)

1. A coolant refrigeration system, comprising: the system comprises a plate evaporator (1), a low-temperature valve (2), a heat exchange device (3), a secondary refrigerant circulating pump (4), a compressor (5), a condenser (6), a filter (7) and a capillary tube (8);

the first inlet (11) of the plate-type evaporator (1) is communicated with the outlet of the secondary refrigerant circulating pump (4); a first outlet (12) of the plate-type evaporator (1) is communicated with an inlet of the heat exchange device (3) through a low-temperature valve (2); the outlet of the heat exchange device (3) is communicated with the inlet of the secondary refrigerant circulating pump (4);

The second inlet (13) of the plate evaporator (1) is communicated with the outlet of the capillary tube (7); the second outlet (14) of the plate-type evaporator (1) is communicated with the inlet of the compressor (5); the outlet of the compressor (5) is communicated with the inlet of the capillary tube (8) through the condenser (6) and the filter (7) in sequence.

2. the coolant refrigeration system according to claim 1, wherein the heat exchange means (3) comprises fin evaporators or blown plate evaporators.

3. the modular refrigerator with coolant based refrigeration system according to any of claims 1-2, characterized by comprising a first modular refrigerator (91), a second modular refrigerator (92) and a third modular refrigerator (93) arranged in parallel; a first heat exchange device is arranged in the first modular refrigerator (92); a second heat exchange device is arranged in the second modular refrigerator (92); a third heat exchange device is arranged in the third modular refrigerator (93); the bottom of the first modular refrigerator (91) is provided with an installation cavity (911);

a plate evaporator (1), a low-temperature valve (2), a secondary refrigerant circulating pump (4), a compressor (5) and a condenser (6) are arranged in the mounting cavity (911); the inlet of the low-temperature valve (2) is communicated with the first outlet (12) of the plate-type evaporator (1); three outlets of the low-temperature valve (2) are respectively communicated with the first heat exchange device, the second heat exchange device and the third heat exchange device; the first heat exchange device, the second heat exchange device and the third heat exchange device are communicated with an inlet of the secondary refrigerant circulating pump (4);

A second inlet (13) of the plate-type evaporator (1) is communicated with an outlet of the capillary tube (8) through a secondary refrigerant refrigerating system pipeline (81); the second outlet (14) of the plate-type evaporator (1) is communicated with the inlet of the compressor (5) through a muffler assembly (51); the outlet of the compressor (5) is communicated with the inlet of the capillary tube (7) through the condenser (6) and the filter (7) in sequence.

4. the modular refrigerator of claim 3 wherein the first heat exchange means is a finned evaporator (31) mounted within the first modular refrigerator (92); the second heat exchange device is a fin evaporator (31) correspondingly arranged in the three chambers of the second modular refrigerator (92); the third heat exchange device is a blown plate evaporator (32) and a fin evaporator (31) which are respectively arranged in the upper chamber and the lower chamber of the third modular refrigerator (93);

the three-fin evaporator (31) in the second modular refrigerator (92) is respectively communicated with three outlets of a one-inlet three-outlet valve (921); the inlet of the one-inlet three-outlet valve (921) is communicated with the outlet of the low-temperature valve (2);

the blowing plate type evaporator (31) and the fin type evaporator (31) in the third modular refrigerator (93) are respectively communicated with two outlets of a one-inlet-two-outlet valve (931); the inlet of the one-inlet-two-outlet valve (931) is communicated with the outlet of the low-temperature valve (2);

The inlet of the finned evaporator (31) in the first modular refrigerator (92) is communicated with an outlet of the low-temperature valve (2).

5. the modular refrigerator of claim 3, wherein a condensing fan (912) is further mounted in the mounting cavity (911); and one side of the mounting cavity (911) is also provided with a condensation air duct air inlet (913) and a condensation air duct air return inlet (914).

Technical Field

The invention belongs to the technical field of refrigeration of refrigerators, and particularly relates to a secondary refrigerant refrigeration system and a modular refrigerator.

Background

Currently, a refrigeration system for a refrigerator is mainly a single cycle, a double cycle, and a triple cycle of a refrigerant. In a conventional refrigerator and a modular refrigerator, the design concept of a refrigeration system of the modular refrigerator is infinite, and the corresponding refrigeration system schemes for the modular refrigerator are more, and mainly include the following:

1. Collect refrigeration parts such as compressor, evaporimeter, condenser and muffler as an organic whole structure, through fan vortex effect, carry the cold volume that the evaporimeter produced to each refrigeration room indoor through the wind channel structure, realize the refrigeration requirement of each refrigeration room. The scheme is applied to the modularized refrigerator, and the problem of serious condensation of parts which are not tightly sealed is caused due to the sealing problem among all modularized refrigerating chambers.

2. The refrigeration components such as a compressor, an evaporator, a condenser, an air return pipe and the like and the bottom refrigeration chamber of the modularized refrigerator are designed in an integrated mode, and other refrigeration chamber modules above the bottom refrigeration chamber respectively convey the cold energy in the refrigeration chamber to each modular chamber above the chamber through an air outlet channel at the upper part of the bottom refrigeration chamber. When the modularized refrigerator is assembled in multiple groups, each row of modularized refrigerators are provided with a compressor, a condenser and an air return pipe assembly, the number of the modularized refrigerators is large, and the problems of high noise, short circuit of air circulation of a condensation module and the like exist during the operation at the same time.

3. The refrigerating system unit modules which are integrated with the components such as the compressor, the evaporator, the condenser, the air return pipe and the like and meet the requirement of heat preservation performance are respectively positioned at different parts of each row of modular refrigerating refrigerators and can be positioned at the bottom, the middle part and the top, and the design of a refrigerating air channel is a big difficulty.

The invention provides a secondary refrigerant refrigerating system and a modular refrigerator, wherein a first heat exchange device is arranged in a first modular refrigerator, a second heat exchange device is arranged in a second modular refrigerator, and a third heat exchange device is arranged in a third modular refrigerator; meanwhile, the plate-type evaporator is respectively communicated with the first heat exchange device, the second heat exchange device and the third heat exchange device through three outlets of the low-temperature valve; the refrigeration in different rooms of the modularized refrigerator is realized, the refrigeration combination between different rooms is realized, various refrigeration requirements are realized, and the combination diversity is strong.

Disclosure of Invention

the invention aims to provide a secondary refrigerant refrigerating system and a modular refrigerator, wherein a first heat exchange device is arranged in a first modular refrigerator, a second heat exchange device is arranged in a second modular refrigerator, and a third heat exchange device is arranged in a third modular refrigerator; meanwhile, the plate-type evaporator is respectively communicated with the first heat exchange device, the second heat exchange device and the third heat exchange device through three outlets of the low-temperature valve; the refrigeration in different rooms of the modularized refrigerator is realized, the refrigeration combination between different rooms is realized, various refrigeration requirements are realized, and the combination diversity is strong.

In order to solve the technical problems, the invention is realized by the following technical scheme:

The invention is a secondary refrigerant refrigeration system comprising: the system comprises a plate-type evaporator, a low-temperature valve, a heat exchange device, a secondary refrigerant circulating pump, a compressor, a condenser, a filter and a capillary tube;

the first inlet of the plate-type evaporator is communicated with the outlet of the secondary refrigerant circulating pump; a first outlet of the plate-type evaporator is communicated with an inlet of the heat exchange device through a low-temperature valve; the outlet of the heat exchange device is communicated with the inlet of the secondary refrigerant circulating pump;

The second inlet of the plate evaporator is communicated with the outlet of the capillary tube; the second outlet of the plate-type evaporator is communicated with the inlet of the compressor; the outlet of the compressor is communicated with the inlet of the capillary tube through the condenser and the filter in sequence.

Preferably, the heat exchange device comprises a plurality of fin evaporators or a plurality of blown sheet evaporators.

preferably, the refrigerator comprises a first modular refrigerator, a second modular refrigerator and a third modular refrigerator which are arranged in parallel; a first heat exchange device is arranged in the first modular refrigerator; a second heat exchange device is arranged in the second modular refrigerator; a third heat exchange device is arranged in the third modular refrigerator; the bottom of the first modular refrigerator is provided with an installation cavity;

a plate evaporator, a low-temperature valve, a secondary refrigerant circulating pump, a compressor and a condenser are arranged in the mounting cavity; an inlet of the low-temperature valve is communicated with a first outlet of the plate-type evaporator; the three outlets of the low-temperature valve are respectively communicated with the first heat exchange device, the second heat exchange device and the third heat exchange device; the first heat exchange device, the second heat exchange device and the third heat exchange device are communicated with an inlet of the secondary refrigerant circulating pump;

a second inlet of the plate evaporator is communicated with an outlet of the capillary tube through a secondary refrigerant refrigerating system pipeline; a second outlet of the plate evaporator is communicated with an inlet of the compressor through a muffler assembly; the outlet of the compressor is communicated with the inlet of the capillary tube through the condenser and the filter in sequence.

preferably, the first heat exchange device is a fin evaporator installed in the first modular refrigerator; the second heat exchange device is a fin evaporator correspondingly arranged in a three-compartment chamber of the second modular refrigerator; the third heat exchange device is a blown plate evaporator and a fin evaporator which are respectively arranged in the upper chamber and the lower chamber of the third modular refrigerator;

The three-fin evaporator in the second modular refrigerator is respectively communicated with three outlets of a first inlet valve and a third outlet valve; the inlet of the first inlet valve, the inlet of the third outlet valve and the outlet of the low-temperature valve are communicated;

the blowing plate type evaporator and the fin type evaporator in the third modular refrigerator are respectively communicated with two outlets of one inlet valve and two outlet valves; the inlets of the inlet valve and the outlet valve are communicated with an outlet of the low-temperature valve;

And the inlet of the finned evaporator in the first modular refrigerator is communicated with an outlet of the low-temperature valve.

preferably, a condensing fan is further installed in the installation cavity; and one side of the mounting cavity is also provided with a condensation air duct air inlet and a condensation air duct air return inlet.

One aspect of the present invention has the following advantageous effects:

1. according to the invention, a first heat exchange device is arranged in a first modularized refrigerator, a second heat exchange device is arranged in a second modularized refrigerator, and a third heat exchange device is arranged in a third modularized refrigerator; meanwhile, the plate-type evaporator is respectively communicated with the first heat exchange device, the second heat exchange device and the third heat exchange device through three outlets of the low-temperature valve; the refrigeration in different rooms of the modularized refrigerator is realized, the refrigeration combination between different rooms is realized, various refrigeration requirements are realized, and the combination diversity is strong.

2. the plate evaporator is internally provided with two flow paths, and one flow path is communicated with a secondary refrigerant refrigeration circulating system; the other path is communicated with a refrigerant refrigerating system; the two pipelines are mutually independent and tightly attached to each other, so that the heat exchange capacity is strong; the cold energy of the refrigerant refrigerating system can be fully transmitted to the secondary refrigerant refrigerating circulation system; the secondary refrigerant carries cold energy to be conveyed to each refrigerating chamber of the modular refrigerator, and the refrigerating requirement of each refrigerating chamber is realized.

3. the refrigeration requirement of the multi-row modular refrigerator is met by only adopting one compressor, the problem of large noise caused by the fact that a plurality of compressors are used in the current multi-row modular refrigerator is solved, and noise is reduced; and meanwhile, the problem of condensation heat exchange short circuit caused by the multi-column modularized refrigerator external multi-column condensation modules is solved, and the heat exchange performance is ensured to be more excellent.

4. the invention realizes the condensation problem caused by untight sealing by the refrigerating device in the installation cavity without sealing treatment with the refrigerating chamber.

of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a single cycle coolant refrigeration system of the present invention;

FIG. 2 is a schematic diagram of a dual cycle series-parallel refrigeration system of the present invention;

FIG. 3 is a schematic diagram of a dual cycle parallel cooling system according to the present invention;

FIG. 4 is a schematic diagram of a three cycle series-parallel refrigeration system of the present invention;

FIG. 5 is a schematic diagram of a three-cycle parallel cooling system of the present invention;

FIG. 6 is a schematic view of the installation cavity and its internal structure of the present invention;

FIG. 7 is a schematic view of a modular refrigerator of the present invention based on a coolant refrigeration system.

Detailed Description

the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

in the description of the present invention, it is to be understood that the terms "open," "upper," "middle," "length," "inner," and the like are used in an orientation or positional relationship for convenience in describing the present invention and for simplicity of description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

referring to fig. 1-7, the present invention is a coolant refrigeration system comprising: the system comprises a plate evaporator 1, a low-temperature valve 2, a heat exchange device 3, a secondary refrigerant circulating pump 4, a compressor 5, a condenser 6, a filter 7 and a capillary tube 8; the first inlet 11 of the plate-type evaporator 1 is communicated with the outlet of the secondary refrigerant circulating pump 4; a first outlet 12 of the plate-type evaporator 1 is communicated with an inlet of the heat exchange device 3 through the low-temperature valve 2; the outlet of the heat exchange device 3 is communicated with the inlet of the secondary refrigerant circulating pump 4; the plate-type evaporator 1, the low-temperature valve 2, the heat exchange device 3 and the secondary refrigerant circulating pump 4 form a secondary refrigerant refrigerating cycle system; the plate evaporator 1, the compressor 5, the condenser 6, the filter 7 and the capillary tube 8 form a refrigeration cycle system; the secondary refrigerant refrigeration circulating system and the refrigeration circulating system form a secondary refrigerant refrigeration circulating system;

The second inlet 13 of the plate evaporator 1 is communicated with the outlet of the capillary tube 7; the second outlet 14 of the plate evaporator 1 is communicated with the inlet of the compressor 5; the outlet of the compressor 5 is communicated with the inlet of the capillary tube 8 through the condenser 6 and the filter 7 in sequence. Wherein the heat exchanging device 3 comprises a plurality of fin evaporators or a plurality of blown sheet evaporators.

Referring to fig. 2, two heat exchangers 3 are connected in series and the low temperature valve 2 adopts one inlet valve and two outlet valves; at the moment, two outlets of the low-temperature valve 2 are respectively communicated with inlets of the two heat exchange devices 3, so that a double-circulation series-parallel secondary refrigerant refrigeration cycle system is formed;

Referring to fig. 3, two heat exchangers 3 are connected in parallel and the low temperature valve 2 adopts an inlet valve and an outlet valve; at the moment, two outlets of the low-temperature valve 2 are respectively communicated with inlets of the two heat exchange devices 3, so that a double-circulation pure parallel secondary refrigerant refrigeration circulation system is formed;

referring to fig. 4, after being connected in parallel, two heat exchangers 3 are connected in series with another heat exchanger 3, and the low temperature valve 2 adopts a one-inlet three-outlet valve; at the moment, three outlets of the low-temperature valve 3 are respectively communicated with inlets of the three heat exchange devices 3, so that a three-cycle series-parallel secondary refrigerant refrigeration cycle system is formed;

Referring to fig. 5, three heat exchangers 3 are connected in parallel and the low temperature valve 2 adopts one inlet valve and three outlet valves; at the moment, three outlets of the low-temperature valve 3 are respectively communicated with inlets of the three heat exchange devices 3 to form a three-circulation pure parallel secondary refrigerant refrigeration circulation system;

In the invention, two flow paths are arranged in a plate-type evaporator 1, and one flow path is communicated with a secondary refrigerant refrigeration circulating system; the other path is communicated with a refrigerant refrigerating system; the two pipelines are mutually independent and tightly attached to each other, so that the heat exchange capacity is strong; the cold energy of the refrigerant refrigerating system can be fully transmitted to the secondary refrigerant refrigerating circulation system; the secondary refrigerant carries cold energy to be conveyed to each refrigerating chamber of the modular refrigerator, so that the refrigerating requirement of each refrigerating chamber is realized;

The secondary refrigerant is methanol, glycol aqueous solution, calcium chloride aqueous solution and the like, and has the advantages of no solidification, no gasification, no toxicity, good chemical stability, small density, small viscosity and the like within the use temperature range;

In the actual use process: the secondary refrigerant refrigeration circulating system and the refrigerant refrigeration circulating system are generally controlled by synchronous operation and can also be controlled by asynchronous operation according to actual requirements. During synchronous operation control, the secondary refrigerant system is synchronously operated and started when the refrigerant refrigeration circulating system operates; the cold energy generated by the plate-type evaporator 1 can be timely conveyed out through the secondary refrigerant in the secondary refrigerant refrigeration cycle system in the operation process of the refrigerant refrigeration cycle system. During asynchronous operation control, a refrigerant refrigeration circulating system is started first during each refrigeration; within the running time of 5min, starting the secondary refrigerant system; the refrigerating capacity of the secondary refrigerant refrigerating cycle system can be ensured to be higher, the cooling speed is higher and the like during operation. Meanwhile, when the refrigerating circulation system of the refrigerant stops operating, the refrigerating circulation system of the secondary refrigerant still operates for a period of time, so that the cold energy in the plate-type evaporator 1 in the refrigerating circulation system of the refrigerant can be fully taken away by the secondary refrigerant, the cold energy is fully applied, and the energy is saved.

Referring to fig. 6 to 7, the modular refrigerators based on the coolant refrigerating system include a first modular refrigerator 91, a second modular refrigerator 92 and a third modular refrigerator 93 arranged in parallel; a first heat exchange device is arranged in the first modular refrigerator 92; a second heat exchange device is arranged in the second modular refrigerator 92; a third heat exchange device is arranged in the third modular refrigerator 93; the bottom of the first modular refrigerator 91 is provided with a mounting cavity 911;

the plate-type evaporator 1, the low-temperature valve 2, the secondary refrigerant circulating pump 4, the compressor 5 and the condenser 6 are arranged in the installation cavity 911; the inlet of the low-temperature valve 2 is communicated with the first outlet 12 of the plate-type evaporator 1; the three outlets of the low-temperature valve 2 are respectively communicated with the first heat exchange device, the second heat exchange device and the third heat exchange device; the first heat exchange device, the second heat exchange device and the third heat exchange device are all communicated with an inlet of the secondary refrigerant circulating pump 4; the low-temperature valve 2 of the secondary refrigerant circulating pump 4 is positioned in the installation cavity 911, and a heat insulation layer is installed, so that the cold energy is prevented from leaking, and the utilization rate of the cold energy is improved;

The second inlet 13 of the plate-type evaporator 1 is communicated with the outlet of the capillary tube 8 through a secondary refrigerant refrigerating system pipeline 81; the second outlet 14 of the plate-type evaporator 1 is communicated with the inlet of the compressor 5 through a muffler assembly 51; the outlet of the compressor 5 is communicated with the inlet of the capillary tube 7 through the condenser 6 and the filter 7 in sequence.

wherein, the first heat exchange device is a fin evaporator 31 installed in the first modular refrigerator 92; the second heat exchange device is a fin evaporator 31 correspondingly arranged in the three chambers of the second modular refrigerator 92; the third heat exchange device is a blown plate evaporator 32 and a fin evaporator 31 which are respectively arranged in the upper chamber and the lower chamber of the third modular refrigerator 93;

the three-fin evaporator 31 in the second modular refrigerator 92 is respectively communicated with three outlets of the one-inlet three-outlet valve 921; the inlet of the one-inlet three-outlet valve 921 is communicated with the outlet of the low-temperature valve 2;

the inflation plate evaporator 31 and the fin evaporator 31 in the third modular refrigerator 93 are respectively communicated with two outlets of a one-inlet-two-outlet valve 931; the inlet of an inlet and outlet valve 931 is communicated with an outlet of the low-temperature valve 2;

The inlet of finned evaporator 31 in first modular refrigerator 92 communicates with an outlet of cryogenic valve 2.

Wherein, a condensing fan 912 is also arranged in the installation cavity 911; a condensation air duct air inlet 913 and a condensation air duct air return 914 are formed in one side of the mounting cavity 911;

When in specific use, the fin evaporator 31 is arranged in the air duct of the compartment; the air duct is formed by enclosing a fan cover fixed on the side wall of the compartment liner and the side wall of the liner; the air ducts which are provided with air outlets and provided with the fin evaporators 31 are internally provided with cooling fans for diffusing cooling capacity into the refrigerating compartment; the blowing plate type evaporator 31 is arranged between the refrigerator liner and the foaming layer;

In fact, the low temperature valve 3 is a one-inlet multiple-outlet valve, selected according to the needs of a specific refrigeration compartment; the refrigerator with the multi-row combined refrigeration modules is convenient, and the applicability is strong.

in the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

the preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.