CN218884342U - Refrigerating system and cold chain equipment - Google Patents

Abstract

The utility model belongs to the technical field of the refrigeration, concretely relates to refrigerating system and cold chain equipment. The refrigerating system comprises a first compressor, a condenser, a suction regulating valve and at least two evaporators, wherein an outlet of the first compressor is communicated with an input port of the condenser; at least two evaporators are connected in parallel with the output port of the condenser; at least two evaporators are each in communication with the inlet of the first compressor through a suction modulation valve. The utility model discloses a refrigerating system connects at least two evaporimeters in parallel with the delivery outlet of condenser to and with the input port intercommunication of first compressor and condenser, and with the entry intercommunication of at least two evaporimeters and first compressor, can realize at least two evaporimeters refrigerated effect respectively with at least two evaporimeters sharing condenser and first compressor, do not need two sets of independent refrigerating system, make the volume of cold chain equipment diminish, weight lightens, and installs simply, and the cost is lower.

Description

Refrigerating system and cold chain equipment

Technical Field

The utility model belongs to the technical field of the refrigeration, concretely relates to refrigerating system and cold chain equipment.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art.

In the prior art, cold chain equipment such as a refrigerator car and the like usually adopts two independent refrigerating systems to respectively provide temperatures required by low-temperature refrigeration and low-temperature freezing, so that the cold chain equipment has the defects of large volume, heavy weight, complex installation, high cost and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of the volume of cold chain equipment that cold chain equipment among the prior art adopted two sets of independent refrigerating system to lead to at least. The purpose is realized by the following technical scheme:

the utility model discloses a first aspect provides a refrigerating system, is applied to cold chain equipment, refrigerating system includes:

a first compressor;

the outlet of the first compressor is communicated with the input port of the condenser; and

the at least two evaporators are connected in parallel with the output port of the condenser;

and the at least two evaporators are communicated with an inlet of the first compressor through the suction adjusting valve.

According to the utility model discloses a refrigerating system all communicates the delivery outlet of at least two evaporimeters and condenser to and with the input port intercommunication of first compressor and condenser, and at least two evaporimeters with be equipped with the governing valve of breathing in on the pipeline between the first compressor, can be with at least two evaporimeters sharing condenser and first compressor, realize two at least evaporimeters refrigerated effect respectively, do not need two sets of independent refrigerating system, make the volume of cold chain equipment diminish, light in weight, and the installation is simple, and the cost is lower.

In addition, according to the utility model discloses a refrigerating system still can have following additional technical characterstic:

in some embodiments of the present invention, a first check valve and an oil separator are sequentially disposed along a flow direction of a fluid on a pipeline communicating the first compressor and the condenser.

In some embodiments of the present invention, the refrigeration system further includes a liquid storage tank and a dry filter, and the output port of the condenser, the liquid storage tank and the dry filter are sequentially communicated along a flow direction of the fluid;

the at least two evaporators include a first evaporator communicating downstream of the filter-drier.

In some embodiments of the present invention, the at least two evaporators further include a second evaporator connected in parallel with the first evaporator downstream of the dry filter.

In some embodiments of the utility model, the refrigerating system still includes the defrosting pipeline, the one end of defrosting pipeline with the export intercommunication of oil separator, the other end of defrosting pipeline with the entry intercommunication of second evaporimeter.

In some embodiments of the utility model, be equipped with first valve module on the defrosting pipeline, first valve module is used for controlling the break-make of defrosting pipeline.

In some embodiments of the present invention, a first expansion valve is disposed between the inlet of the first evaporator and the dry filter; and/or a second expansion valve is arranged on a pipeline between the outlet of the drying filter and the inlet of the second evaporator.

In some embodiments of the present invention, a first protection switch is disposed on the pipeline between the first check valve and the oil separator; and/or a second protection switch is arranged on a pipeline between the first compressor and the suction regulating valve.

The utility model discloses a second aspect provides a cold chain equipment, including freezer box and refrigerator box, cold chain equipment still includes:

the refrigeration system described in the above embodiment;

wherein the at least two evaporators include a first evaporator and a second evaporator;

the first evaporator is arranged in the refrigerating box body, and the second evaporator is arranged in the freezing box body.

In addition, according to the utility model discloses a cold chain equipment still can have following additional technical characterstic:

in some embodiments of the present invention, the cold chain device further comprises two temperature sensors, wherein the two temperature sensors are respectively used for detecting the ambient temperature in the refrigerator body and the ambient temperature in the freezer body.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated with like reference numerals throughout the drawings. In the drawings:

fig. 1 schematically shows a schematic structural view of a refrigeration system according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an outer unit shown in fig. 1;

fig. 3 is a schematic structural view of the first inner machine shown in fig. 1;

fig. 4 is a schematic structural view of the second inner machine shown in fig. 1;

fig. 5 is a schematic structural diagram of the cold chain equipment.

The reference numbers are as follows:

100 is a refrigeration system;

10 is a defrosting pipeline;

21 is a first evaporator, 22 is a first evaporator fan, 23 is a second evaporator, and 24 is a second evaporator fan;

30 is a condenser, 31 is a condensing fan;

41 is a first compressor, 42 is a first check valve, 43 is a spare compressor, and 44 is a spare check valve;

50 is an oil separator;

a liquid storage tank 60;

70 is a dry filter;

80 is an air return device;

a suction regulating valve 91, a first valve assembly 92, a first expansion valve 93, a second expansion valve 94, a first protection switch 95, a second protection switch 96, a second valve assembly 97 and a liquid viewing mirror 98;

101 is an outdoor unit, 102 is a first indoor unit, 103 is a second indoor unit, 104 is a refrigerator body, 105 is a freezer body, 106 is a first temperature sensor, 107 is a second temperature sensor, and 108 is a third temperature sensor.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" may include both an up and down orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 to 5, according to a first aspect of embodiments of the present invention, a refrigeration system 100 is provided, the refrigeration system 100 is applied to a cold chain device, and fig. 1 schematically shows a structural schematic diagram of the refrigeration system 100 according to embodiments of the present invention. The refrigeration system 100 includes a first compressor 41, a condenser 30, and at least two evaporators, an outlet of the first compressor 41 being in communication with an input of the condenser 30, the at least two evaporators being arranged in parallel and in communication with an output of the condenser 30. Further, at least two evaporators communicate with an inlet of the first compressor 41, a suction gas adjusting valve 91 is provided on a pipe between the at least two evaporators and the first compressor 41, and the at least two evaporators each communicate with the inlet of the first compressor 41 through the suction gas adjusting valve 91.

According to the utility model discloses a refrigerating system 100, all communicate at least two evaporimeters with condenser 30's delivery outlet, and communicate the export of first compressor 41 and condenser 30's input port, and be equipped with the governing valve 91 of breathing in on the pipeline between at least two evaporimeters and first compressor 41's entry, can be with at least two evaporimeters sharing condenser 30 and first compressor 41, realize two at least evaporimeters refrigerated effects respectively, do not need two sets of independent refrigerating system 100, make the volume of cold chain equipment diminish, weight lightens, and the installation is simple, and the cost is lower.

It should be noted that the number of evaporators here may be three, or more, such as four or five, etc., and they are set as required. In addition, a suction adjusting valve 91 is provided in a pipe between each evaporator and the inlet of the first compressor 41, wherein the suction adjusting valve 91 is a suction pressure adjusting valve, and the suction pressure adjusting valve adjusts the flow rate of the fluid according to the outlet pressure of the suction pressure adjusting valve so as to prevent the suction pressure at the inlet of the first compressor 41 from exceeding a predetermined value, thereby preventing the motor driving the first compressor 41 from being overloaded and serving as a protection device for protecting the stable operation of the refrigeration system 100.

In some embodiments, a first check valve 42 and an oil separator 50 are sequentially disposed on a pipeline connecting the first compressor 41 and the condenser 30 along a flow direction of the fluid, wherein the first check valve 42 is disposed at an outlet of the first compressor 41 to realize one-way delivery of the fluid, so that the discharge gas of the first compressor 41 can only flow in one direction, and the oil separator 50 is a component for oil-gas separation.

The refrigeration structure of the present invention is described by setting two evaporators in the refrigeration system 100, and the two evaporators are respectively placed in different spaces to achieve the effect of respectively refrigerating the two spaces.

Specifically, the at least two evaporators include a first evaporator 21, and a liquid storage tank 60 and a dry filter 70 are sequentially disposed in a fluid flow direction on a pipeline connecting an output port of the condenser 30 and an inlet of the first evaporator 21, that is, the output port of the condenser 30, the liquid storage tank 60 and the dry filter 70 are sequentially connected in the fluid flow direction. The first evaporator 21 belongs to the first inner unit 102, and cools a space where the first evaporator 21 is located. The receiver 60 serves to primarily store the liquid component of the refrigerant and reduce the load on the condenser 30, and the filter drier 70 serves to primarily filter and absorb moisture.

A liquid observation mirror 98 is further provided at the output end of the dry filter 70 to detect moisture present in the refrigerant. Here, the output end of the dry filter 70 is the rear end of the dry filter 70.

In some embodiments, the at least two evaporators further include a second evaporator 23, and a liquid storage tank 60, a drying filter 70 and a gas return 80 are sequentially arranged on a pipeline connecting the condenser 30 and the second evaporator 23 along a flow direction of the fluid, where the second evaporator 23 and the first evaporator 21 are arranged side by side downstream of the drying filter 70, wherein the second evaporator 23 belongs to the second inner machine 103 and cools a space where the second evaporator 23 is located. The air return 80 may be an air return tube or other structure.

Here, the space where the second evaporator 23 is located is a freezing space, and the temperature required is relatively low, so that the surface of the second evaporator 23 is likely to be frosted, and it is necessary to perform a defrosting operation on the second evaporator 23. Therefore, the refrigeration system 100 is further provided with a defrosting pipeline 10, one end of the defrosting pipeline 10 is communicated with the outlet of the oil separator 50, and the other end of the defrosting pipeline 10 is communicated with the inlet of the second evaporator 23. The defrosting pipeline 10 realizes defrosting operation of the second evaporator 23 by using high-temperature and high-pressure gas discharged by the first compressor 41, and an external power supply is not required to be introduced, so that the energy-saving and environment-friendly effects are achieved.

It should be noted that, a first evaporation fan 22 is disposed near the first evaporator 21, the number of the first evaporation fans 22 is at least one, a second evaporation fan 24 is disposed near the second evaporator 23, and the number of the second evaporation fans 24 is at least one, in fig. 1, the number of the first evaporation fans 22 and the number of the second evaporation fans 24 are three. A condensing fan 31 is provided in the vicinity of the condenser 30, and the number of the condensing fans 31 is at least one, and in fig. 1, the number of the condensing fans 31 is two.

The first evaporation fan 22, the second evaporation fan 24 and the condensation fan 31 are all common products in the prior art, and the first evaporation fan 22, the second evaporation fan 24 and the condensation fan 31 are not explained herein.

In some embodiments, a first valve assembly 92 is disposed on the defrosting pipeline 10, and the first valve assembly 92 is used for controlling the on/off of the defrosting pipeline 10. The first valve assembly 92 may be an electromagnetic valve, or may be another assembly for controlling on/off, and the connection of the defrosting pipeline 10 and the defrosting operation may be realized by opening the first valve assembly 92, and when defrosting is not required, the first valve assembly 92 is turned off.

Optionally, refrigeration system 100 further includes a second valve assembly 97, second valve assembly 97 being disposed in a line communicating between backup compressor 43 and the output of dry filter 70. The second valve assembly 97 may be a solenoid valve, or other assembly for controlling on/off.

In some embodiments, a first expansion valve 93 is provided between the dry filter 70 and the inlet of the first evaporator 21, wherein the first expansion valve 93 is provided near the inlet of the first evaporator 21; a second expansion valve 94 is arranged on a pipeline between the inlet of the second evaporator 23 and the air return 80, the second expansion valve 94 is arranged near the inlet of the second evaporator 23, and both the first expansion valve 93 and the second expansion valve 94 are thermal expansion valves and can adjust the flow rate of the refrigerant.

In some embodiments, a first protection switch 95 is provided on the line between the first check valve 42 and the oil separator 50, and/or a second protection switch 96 is provided on the line between the first compressor 41 and the suction modulation valve 91. The first protection switch 95 is a high-voltage protection switch, the second protection switch 96 is a low-voltage protection switch, and the high voltage of the high-voltage protection switch and the low voltage of the low-voltage protection switch are relative concepts, and are both switches for protecting the pipeline, and when the pressure in the pipeline is too high, the high-voltage protection switch is turned off to protect the first compressor 41. When the pressure in the pipeline is too low, the low-pressure protection switch is turned off to protect the first compressor 41.

In a second aspect of the present invention, there is also provided a cold chain apparatus, as shown in fig. 5, wherein the cold chain apparatus includes a freezing box 105 and a refrigerating box 104, and the cold chain apparatus further includes the refrigeration system 100 mentioned in the above embodiment; the at least two evaporators include a first evaporator 21 and a second evaporator 23; the first evaporator 21 is provided in the refrigerator 104, and the second evaporator 23 is provided in the freezer 105.

According to the utility model discloses a cold chain equipment, with two at least evaporators parallelly connected, and all communicate with condenser 30's delivery outlet, and communicate the export of first compressor 41 and condenser 30's input port, and be equipped with the governing valve 91 of breathing in on the pipeline between two at least evaporators and first compressor 41, can share condenser 30 and first compressor 41 with two at least evaporators, realize two at least evaporators refrigerated effect respectively, do not need two sets of independent refrigerating system 100, make cold chain equipment's volume diminish, weight lightens, and the installation is simple, and the cost is lower.

In some embodiments, as shown in fig. 2 to 4, fig. 2 is a schematic structural view of the outer unit 101 shown in fig. 1, fig. 3 is a schematic structural view of the first inner unit 102 shown in fig. 1, and fig. 4 is a schematic structural view of the second inner unit 103 shown in fig. 1. The cold chain equipment further comprises at least two temperature sensors, wherein the two temperature sensors are respectively used for detecting the ambient temperature in the refrigerating box body 104 and the ambient temperature in the freezing box body 105. Here, with reference to fig. 2, 3 and 4, a temperature sensor in a cold chain apparatus is described, in which a plurality of temperature sensors are provided, a first temperature sensor 106 is provided near the condenser 30 of the external machine 101 to detect a condensation temperature, a second temperature sensor 107 is provided in the refrigerating box body 104 to detect an ambient temperature inside the refrigerating box body 104, and the number of the second temperature sensors 107 may be two or more, and temperatures at different positions may be measured. The temperature sensor provided in the freezer compartment 105 is the third temperature sensor 108, which detects the ambient temperature inside the freezer compartment 105, and the controller of the cold chain equipment adjusts the temperature according to the detected temperature value and the set target value.

It should be noted that, in the cold chain apparatus, a backup compressor 43 is provided in addition to the first compressor 41, a backup check valve 44 is provided at an output end of the backup compressor 43, and the backup compressor 43 and the backup check valve 44 may be used instead of the first compressor 41 and the first check valve 42, respectively, when necessary.

The embodiment is described by the cold chain equipment comprising a first inner machine 102 and a second inner machine 103, and when necessary, a third inner machine and a fourth inner machine can be further arranged, so that a plurality of inner machines share one outer machine, the control principle of the cold chain equipment of the inner machines is the same as that of the two inner machines, and the cold chain equipment is not expanded.

The cold chain device mentioned here may be a freezing device, such as a refrigerator car, a freezer cabinet, etc., or a refrigerating device, such as a refrigerator car, a freezer cabinet, etc., or a device having both a freezing function and a refrigerating function.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A refrigeration system for a cold chain apparatus, the refrigeration system comprising:

a first compressor;

the outlet of the first compressor is communicated with the input port of the condenser; and

the at least two evaporators are connected in parallel with the output port of the condenser;

and the at least two evaporators are communicated with an inlet of the first compressor through the suction adjusting valve.

2. The refrigeration system according to claim 1, wherein a first check valve and an oil separator are provided in this order in a flow direction of the fluid on a pipe that communicates the first compressor and the condenser.

3. The refrigeration system of claim 2, further comprising a receiver and a desiccant filter, wherein the outlet of the condenser, the receiver and the desiccant filter are in fluid communication in sequence;

the at least two evaporators include a first evaporator communicating downstream of the filter-drier.

4. The refrigerant system as set forth in claim 3, wherein said at least two evaporators further include a second evaporator connected in parallel with said first evaporator downstream of said desiccant filter.

5. The refrigeration system according to claim 4, further comprising a defrost line, one end of the defrost line communicating with the outlet of the oil separator and the other end of the defrost line communicating with the inlet of the second evaporator.

6. The refrigeration system as recited in claim 5, wherein a first valve assembly is arranged on the defrosting pipeline and is used for controlling the on-off of the defrosting pipeline.

7. The refrigeration system according to claim 4, wherein a first expansion valve is provided between an inlet of the first evaporator and the dry filter; and/or a second expansion valve is arranged on a pipeline between the outlet of the drying filter and the inlet of the second evaporator.

8. The refrigeration system as recited in claim 2 wherein a first protection switch is disposed on a conduit between the first check valve and the oil separator; and/or a second protection switch is arranged on a pipeline between the first compressor and the suction regulating valve.

9. The utility model provides a cold chain equipment, includes freezing box and refrigerator body, its characterized in that, cold chain equipment still includes:

the refrigeration system of any one of claims 1 to 8;

wherein the at least two evaporators include a first evaporator and a second evaporator;

the first evaporator is arranged in the refrigerating box body, and the second evaporator is arranged in the freezing box body.

10. The cold chain apparatus of claim 9, further comprising two temperature sensors for detecting an ambient temperature inside the refrigerator body and an ambient temperature inside the freezer body, respectively.

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