CN106482425A - Split type multi-temperature zone refrigeration plant - Google Patents

Abstract

The invention provides a split type multi-temperature zone refrigeration equipment. Split-type multi-temperature zone refrigeration equipment, including a refrigeration system and a fan, the refrigeration system includes a compressor, a hot-end condenser, a throttling device, and a cold-end evaporator, and also includes an outdoor cabinet and multiple independent indoor lockers , the outdoor cabinet is provided with an air duct, the compressor, the hot-end condenser and the fan are arranged in the air duct, and each of the indoor lockers is provided with the cold-end evaporator device. To improve the convenience and versatility of the split-type multi-temperature zone refrigeration equipment, and to improve the comfort and experience of users.

Description

Split type multi-temperature zone refrigeration equipment

technical field

The invention relates to refrigeration equipment, in particular to a split-type multi-temperature zone refrigeration equipment.

Background technique

At present, refrigeration equipment (refrigerators, freezers, etc.) are widely used in people's daily life. Traditional household refrigeration equipment adopts a single-box structure. The box is divided into a storage room and a machine compartment. The compressor, condenser, fan and other components are arranged in the machine compartment. items. During actual use, the operation of the compressor in the machine compartment will generate noise and heat, resulting in poor comfort and experience for users of refrigeration equipment in the prior art; at the same time, the storage compartments are all arranged in the same box Therefore, the user needs to configure multiple independent refrigeration devices in different rooms to meet the needs of refrigeration storage, resulting in low convenience and versatility of the refrigeration devices in the prior art.

Contents of the invention

The technical problem to be solved by the present invention is to provide a split-type multi-temperature zone refrigeration device, which improves the convenience and versatility of the split-type multi-temperature zone refrigeration device, and improves user comfort and experience.

The technical solution provided by the present invention is a split-type multi-temperature zone refrigeration equipment, including a refrigeration system and a fan. The refrigeration system includes a compressor, a hot-end condenser, a throttling device, and a cold-end evaporator, and an outdoor unit shell and a plurality of independent indoor storage cabinets, the outdoor casing is provided with an air duct, the compressor, the hot end condenser and the fan are arranged in the air duct, and each of the indoor storage cabinets The cold end evaporator is arranged in the locker.

The split-type multi-temperature zone refrigeration equipment provided by the present invention is divided into an outdoor cabinet and a plurality of independent indoor storage cabinets by adopting a split structure, and components such as a compressor, a condenser, and a throttling device are arranged in the outdoor cabinet, Since the outdoor casing is set on the outdoor side, the noise and heat generated by the compressor will not affect the indoor side, which can effectively improve the user's comfort and experience; and, due to the use of multiple independent indoor lockers, Users can place different indoor lockers in different rooms according to their needs, so as to improve the convenience and versatility of the split-type multi-temperature zone refrigeration equipment. In addition, setting the compressor, hot-end condenser and fan in the same air duct can make full use of the wind generated by the fan to dissipate heat from the compressor and hot-end condenser at the same time, improving the heat exchange effect of the compressor and condenser overall. Improve the heat exchange efficiency of the refrigeration system and improve energy utilization.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic structural diagram of an embodiment of a split-type multi-temperature zone refrigeration device according to the present invention.

Fig. 2 is a schematic diagram of an embodiment of a split-type multi-temperature zone refrigeration device according to the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figures 1-2, the split-type multi-temperature zone refrigeration equipment of this embodiment adopts a split structure, including an outdoor cabinet 101 and a plurality of independent indoor lockers 102, and the outdoor cabinet 101 is placed on the outside of the wall 100 , and the indoor locker 102 is placed on the inner side of the wall 100, wherein the compressor 1 of the refrigeration system, the hot end condenser 2, the throttling device and the fan (not shown) and other components are arranged in the outdoor cabinet 101, And the cold-end evaporator of the refrigeration system is arranged in the corresponding indoor locker 102 . Moreover, an air duct is provided in the outdoor cabinet 101 to place the compressor 1, the hot-end condenser 2 and the fan, and the wind formed by the fan can simultaneously dissipate heat from the compressor 1 and the hot-end condenser 2, thereby improving cooling efficiency and energy utilization. Rate.

Specifically, during the actual use of the split-type multi-temperature zone refrigeration equipment in this embodiment, since the compressor 1 is installed in the external outdoor cabinet 101, the noise and heat generated by the operation of the compressor 1 will not affect the indoor side. , which can effectively improve the comfort of the user in indoor use and improve the user experience. At the same time, due to the adoption of multiple independent indoor lockers 102, the indoor lockers 102 can be placed in different rooms for use as required, so that a single compressor 1 can meet the needs of freezing or refrigerating items in different rooms. Wherein, the indoor locker 102 is also provided with a circulation fan (not shown), and the air circulation in the indoor locker 102 can be realized by using the circulation fan, so as to improve the uniformity of temperature distribution in the indoor locker 102 . In addition, according to user needs, the indoor locker 102 may be a horizontal cabinet, or a vertical cabinet, or a wall-mounted cabinet.

Based on the above technical solution, optionally, in order to improve energy efficiency and refrigeration performance, and expand the refrigeration temperature range to improve versatility, the indoor lockers 102 are divided into shallow low-temperature lockers and deep low-temperature lockers. The end evaporator is divided into a shallow low temperature evaporator 4 and a deep low temperature evaporator 5, the shallow low temperature evaporator 4 is set in the shallow low temperature locker, and the deep low temperature evaporator 4 is set in the deep low temperature locker 5; and the refrigeration system also includes a gas-liquid separator 3, a first regenerator 7 and a heat exchanger 6; the first regenerator 7 is provided with a first capillary 71 and a first The heat recovery pipe 72, the outlet of the hot end condenser 2 is connected to the inlet of the gas-liquid separator 3; the gas outlet of the gas-liquid separator 3 is connected to the first heat exchange channel of the heat exchanger 6, The first heat exchange channel is connected to the inlet of the deep low-temperature evaporator 5 through the second capillary 82; the liquid outlet of the gas-liquid separator 3 is connected to the shallow low-temperature evaporator 4 through the first capillary 71 The inlet of the shallow low-temperature evaporator 4 is connected to the second heat exchange channel of the heat exchanger 6, and the second heat exchange channel and the outlet of the deep-low temperature evaporator 5 respectively pass through the first circuit The heat pipe 72 is connected to the inlet of the compressor 1 . Specifically, the refrigerant is compressed by the compressor 1 to form a high-temperature, high-pressure superheated refrigerant gas, and the refrigerant gas enters the hot-end condenser 2 for condensation. Utilizing the difference in dew point temperature of the high and low boiling point refrigerants in the refrigerant, the refrigerant gas condenses A two-phase refrigerant rich in high-boiling refrigerant liquid and low-boiling refrigerant gas is formed, and the refrigerant enters the gas-liquid separator 3 for separation. The liquid-phase refrigerant rich in high-boiling point refrigerant is output from the liquid outlet of the gas-liquid separator 3, and after throttling through the first capillary 71, it enters the shallow low-temperature evaporator 4 for heat exchange and forms a two-phase refrigerant that enters the exchange The heat is further exchanged into saturated refrigerant gas in the heat exchanger 6, and then the refrigerant gas enters the first heat recovery pipe 72 in the first regenerator 7, and the first heat recovery pipe 72 exchanges heat with the first capillary tube 71; the gas phase refrigerant first Entering the heat exchanger 6 to absorb the cooling capacity of the refrigerant output by the low-temperature evaporator 4 to form a liquid-phase refrigerant, and the liquid-phase refrigerant is throttled by the second capillary tube 81 and then enters the deep-low-temperature evaporator 5 for heat exchange to form a gas refrigerant The refrigerant gas flows into the first heat recovery pipe 72 , and finally, the refrigerant gas in the first heat recovery pipe 72 is sent back to the compressor 1 . Preferably, the multi-temperature zone refrigeration cycle system in this embodiment further includes a second regenerator 8, and the second regenerator 8 is provided with the second capillary tube 81 and the second regenerator tube 82 for mutual heat exchange, so that The outlet of the deep-low temperature evaporator 5 and the second heat exchange channel are respectively connected to the first heat return pipe 72 through the second heat return pipe 82 . Specifically, the gas refrigerant formed after heat exchange in the deep-low temperature evaporator 5 and the refrigerant transported by the second heat exchange channel enter into the second heat return pipe 82 of the second regenerator 8 , and the second heat return pipe 82 is connected to the second After the capillary tube 81 performs heat exchange, the cooling temperature of the deep-low temperature evaporator 5 can be lowered even more, a lower cooling effect can be obtained, and energy consumption can be more effectively used to improve energy efficiency. Specifically, the two evaporators are equipped with corresponding regenerators. The regenerators can recycle the cooling capacity of the refrigerant in the return air to improve the energy utilization rate of the system and do not require complicated control procedures. Product performance is guaranteed.

In actual use, the shallow low-temperature evaporator 4 is used for refrigeration or conventional freezing, while the deep low-temperature evaporator 5 can not only be used for conventional freezing, but also can achieve deep freezing, and can achieve a large span with different refrigerants. Refrigeration in a temperature range, the multi-temperature zone refrigeration cycle system in this embodiment uses a mixed refrigerant, and the mixed refrigerant includes a variety of refrigerants, for example: the mixed refrigerant is a mixture of R600a and R290; or, the mixed refrigerant The refrigerant is a mixture of R600 and R290; or, the mixed refrigerant is a mixture of R600a and R600; or, the mixed refrigerant is a mixture of R600a and R170; or, the mixed refrigerant is a mixture of R290 and R170; Alternatively, the mixed refrigerant is a mixture of R600a, R290 and R170. Different storage temperature zones can be formed through different non-azeotropic mixed refrigerants. The working medium pair R600a/R290: can realize the storage temperature zone of -18~-30℃ and the storage temperature zone of -30~-40℃; the working medium pair R600 /R290: can realize the storage temperature zone of -6~-18℃ and -30~-40℃; working fluid pair R600/R600a: can realize the storage temperature zone of 0~9℃ and -6~-12℃ Working medium pair R600a/R170: can realize -18~-30℃ storage temperature zone and -40~-60℃ storage temperature zone; working medium pair R290/R170: can realize -20~-40℃ storage temperature zone and -40~-60℃ storage temperature zone, etc.

Among them, according to the setting of different numbers of temperature zones, both the shallow low-temperature evaporator 4 and the deep-low temperature evaporator 5 can be composed of multiple sub-evaporators, and the sub-evaporators can be combined in series or in parallel. In addition, the performance entity of the heat exchanger 6 can be a plate heat exchanger or a casing heat exchanger.

By sending the gaseous and liquid refrigerants in the gas-liquid separator to different evaporators, the gaseous refrigerant will be sent to the deep-low temperature evaporator through the heat exchanger for deep-low temperature refrigeration, while the liquid refrigerant will pass through the capillary section. After flowing into the shallow low-temperature evaporator for shallow low-temperature refrigeration, and in order to effectively widen the range of temperature difference, the refrigerant output from the shallow low-temperature evaporator undergoes heat exchange with the refrigerant entering the shallow low-temperature evaporator. Exchange, so that the cooling temperature of the shallow low-temperature evaporator is lower, and the effect of multi-temperature zone cooling is realized, and no complicated control program is required, while the heat exchanger can effectively improve energy efficiency, reduce energy consumption, and realize the improvement of split multi-temperature District refrigeration equipment has high energy utilization rate and refrigeration performance, and expands the refrigeration temperature range to improve versatility.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (9)

1. A split-type multi-temperature zone refrigeration equipment, including a refrigeration system and a fan, the refrigeration system includes a compressor, a hot-end condenser, a throttling device and a cold-end evaporator, and is characterized in that it also includes an outdoor casing and A plurality of independent indoor lockers, an air duct is arranged in the outdoor cabinet, the compressor, the hot end condenser and the fan are arranged in the air duct, and each of the indoor lockers The cold end evaporator is arranged in the middle. 2 . The split-type multi-temperature zone refrigeration device according to claim 1 , wherein a circulation fan is also provided in the indoor locker. 3 . 3. The split-type multi-temperature zone refrigeration device according to claim 1, wherein the indoor locker is a horizontal cabinet, or a vertical cabinet, or a wall-mounted cabinet. 4. The split-type multi-temperature zone refrigeration device according to any one of claims 1-3, wherein the indoor lockers are divided into shallow low-temperature lockers and deep low-temperature lockers, and the cold end evaporates The evaporator is divided into a shallow low temperature evaporator and a deep low temperature evaporator, the shallow low temperature evaporator is set in the shallow low temperature locker, and the deep low temperature evaporator is set in the deep low temperature locker; the section The flow device includes a first capillary tube and a second capillary tube, and the refrigeration system also includes a gas-liquid separator, a first regenerator and a heat exchanger; the first regenerator is provided with the first The capillary tube and the first heat return pipe, the outlet of the condenser is connected with the inlet of the gas-liquid separator; the gas outlet of the gas-liquid separator is connected with the first heat exchange passage of the heat exchanger, and the first A heat exchange channel is connected to the inlet of the deep low-temperature evaporator through the second capillary, the liquid outlet of the gas-liquid separator is connected to the inlet of the shallow low-temperature evaporator through the first capillary, and the The outlet of the shallow low-temperature evaporator is connected to the second heat exchange channel of the heat exchanger, and the second heat exchange channel and the outlet of the deep-low temperature evaporator are respectively connected to the first heat return pipe, and the first return A heat pipe connects the inlet of the compressor. 5. The split-type multi-temperature zone refrigeration device according to claim 4, characterized in that it further comprises a second regenerator, the second regenerator is provided with the second capillary tube and the first regenerator for mutual heat exchange Two heat return pipes, the second heat exchange channel and the outlet of the deep-low temperature evaporator are respectively connected to the second heat return pipe, and the second heat return pipe is connected to the first heat return pipe. 6. The split-type multi-temperature zone refrigeration device according to claim 4, wherein the shallow low-temperature evaporator comprises a plurality of shallow low-temperature sub-evaporators arranged in parallel; or, the shallow low-temperature evaporator comprises A plurality of low-temperature sub-evaporators arranged in series. 7. The split-type multi-temperature zone refrigeration device according to claim 4, characterized in that, the deep-low temperature evaporator comprises a plurality of deep-low sub-evaporators arranged in parallel; or, the deep-low temperature evaporator comprises A plurality of deep-low temperature sub-evaporators arranged in series. 8. The split-type multi-temperature zone refrigeration device according to claim 4, wherein the split-type multi-temperature zone refrigeration device uses a mixed refrigerant, and the mixed refrigerant includes multiple refrigerants. 9. The split-type multi-temperature zone refrigeration device according to claim 8, wherein the mixed refrigerant is a mixture of R600a and R290; or, the mixed refrigerant is a mixture of R600 and R290; or, the The mixed refrigerant is a mixture of R600a and R600; or, the mixed refrigerant is a mixture of R600a and R170; or, the mixed refrigerant is a mixture of R290 and R170; or, the mixed refrigerant is R600a, R290 and R170 mixture.