CN218884338U - Liquid storage tank and cold chain equipment - Google Patents

Abstract

The utility model belongs to the technical field of the refrigeration, concretely relates to liquid storage pot and cold chain equipment. The liquid storage tank comprises a cylinder body, a liquid inlet pipe, a liquid outlet pipe and a heat return pipe, wherein a first inlet is formed in the cylinder body; the liquid inlet pipe is communicated with the cylinder body, and the liquid outlet pipe is communicated with the cylinder body; the heat recovery pipe is arranged in the barrel, one end of the heat recovery pipe is communicated with the evaporator through a first inlet respectively, and at least part of the heat recovery pipe is spirally arranged. Through the inside setting at the barrel be the backheat pipe that the heliciform set up to be connected the one end of backheat pipe with the evaporimeter of cold chain equipment, then can be through backheat pipe with evaporimeter exhaust low temperature return-air introduction to the inside of barrel, with get into from the feed liquor pipe, and carry out the heat exchange from drain pipe exhaust refrigerant, realize the reuse to cold volume, avoid the waste of cold volume.

Description

Liquid storage tank and cold chain equipment

Technical Field

The utility model belongs to the technical field of the refrigeration, concretely relates to liquid storage pot and cold chain equipment.

Background

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

The liquid storage pot of cold chain equipment among the prior art structural function is more single, only has stock solution regulatory function, and the cold chain equipment gives off the air through the return air hose from the low temperature return air that the evaporimeter came out, has caused the waste of cold volume.

SUMMERY OF THE UTILITY MODEL

The utility model aims at least solving the problem that the low temperature return air in the cold chain equipment discharges the waste that leads to cold volume in the air. The purpose is realized by the following technical scheme:

the utility model discloses a first aspect provides a liquid storage pot is applied to cold chain equipment, cold chain equipment includes the evaporimeter, the liquid storage pot includes:

the device comprises a barrel, a first valve and a second valve, wherein a first inlet is formed in the barrel;

the liquid inlet pipe is communicated with the barrel;

the liquid outlet pipe is communicated with the barrel; and

the heat recovery pipe is arranged inside the barrel, one end of the heat recovery pipe is communicated with the evaporator through the first inlet respectively, and at least part of the heat recovery pipe is spirally arranged.

According to the utility model discloses a liquid storage pot is the backheat pipe that the heliciform set up through the inside setting at the barrel to be connected the one end of backheat pipe with the evaporimeter of cold chain equipment, then can be through backheat pipe with the inside of evaporimeter exhaust low temperature return air introduction barrel, with from the feed liquor pipe entering, and carry out the heat exchange from drain pipe exhaust refrigerant, realize avoiding the waste of cold volume to the reuse of cold volume.

In addition, according to the utility model discloses a liquid storage pot still can have following additional technical characterstic:

in some embodiments of the present invention, the barrel comprises a side wall, a first end wall and a second end wall, both ends of the side wall are connected with the first end wall and the second end wall respectively;

one of the first end wall and the second end wall is provided with a first outlet;

the first inlet is provided in the other of the first end wall and the second end wall or in the side wall.

In some embodiments of the present invention, the first outlet is disposed on the first end wall, and the liquid inlet pipe and the liquid outlet pipe are both disposed on the second end wall;

the first inlet is arranged on the second end wall, or the first inlet is arranged on the side wall, and the distance between the first inlet and the second end wall is smaller than a preset value, wherein the preset value is 0.1-0.3 times of the axial length of the cylinder body.

In some embodiments of the present invention, the heat recovery pipe comprises a spiral portion;

the liquid inlet pipe comprises a first pipe body and a second pipe body which are mutually communicated, the first pipe body is arranged inside the cylinder body, and the second pipe body is arranged outside the cylinder body;

the first pipe body extends along the axial direction of the cylinder body, and the outlet end of the first pipe body protrudes out of the spiral part or is flush with the end part of the spiral part facing the first outlet.

In some embodiments of the present invention, the heat recovery pipe further includes a connection portion, the connection portion is disposed at two ends of the spiral portion, and the connection portion is inserted into the first inlet and the first outlet respectively.

In some embodiments of the present invention, a distance between the inlet end of the outlet pipe and the second end wall is less than a distance between the first inlet and the second end wall.

In some embodiments of the present invention, a distance between the liquid outlet pipe and the first inlet is smaller than a distance between the liquid inlet pipe and the first inlet.

In some embodiments of the present invention, the heat recovery pipe is a threaded pipe.

A second aspect of the utility model provides a cold chain equipment, include:

an evaporator; and

in the fluid reservoir tank as described in the above embodiment, the regenerator tube is in communication with the evaporator through the first inlet.

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 first inlet, the liquid inlet pipe and the liquid outlet pipe are located in the lower portion of the cylinder along a vertical direction.

Drawings

Various other 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 by like reference numerals throughout the drawings. In the drawings:

FIG. 1 schematically illustrates an internal schematic view of a fluid reservoir, in accordance with an embodiment of the present invention;

FIG. 2 is a schematic view of a fluid flow configuration of the fluid reservoir tank shown in FIG. 1;

FIG. 3 is a schematic diagram of the overall construction of the fluid reservoir tank illustrated in FIG. 1;

FIG. 4 is a schematic illustration of the fluid reservoir tank illustrated in FIG. 3 in a second perspective view;

FIG. 5 is a schematic view of the connection of the receiver shown in FIG. 1 in a cold chain apparatus;

fig. 6 is a schematic structural diagram of the cold chain equipment.

The reference numbers are as follows:

100 is a liquid storage tank;

10 is a cylinder body, 11 is a first inlet, 12 is a first outlet, 13 is a side wall, 14 is a first end wall, and 15 is a second end wall;

20 is a liquid inlet pipe, 21 is a first pipe body, 211 is an outlet end, and 22 is a second pipe body;

a liquid outlet pipe 30, a third pipe 31, a fourth pipe 32 and an inlet end 33;

40 is a regenerative tube, 41 is a spiral part, and 42 is a connecting part;

50 is a liquid level;

200 is an evaporator;

300 is a compressor;

400 is a condenser;

500 is an oil separator;

600 is a dryer

700 is a defrosting pipeline.

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," "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 "in ...below" may include both upper and lower orientations. 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 6, according to a first aspect of the embodiments of the present invention, a liquid storage tank 100 is provided, which is applied to a cold chain device, as shown in fig. 5, the cold chain device includes an evaporator 200, a compressor 300, a condenser 400 and the liquid storage tank 100, and fig. 5 is a schematic view of a connection structure of the liquid storage tank 100 shown in fig. 1 in the cold chain device, wherein the evaporator 200, the compressor 300 and the condenser 400 are all connected to the liquid storage tank 100.

The cold chain device may be a freezing device, such as a refrigerator car, a freezer cabinet, or the like, or a refrigerating device, such as a refrigerator car, a freezer cabinet, or the like.

With reference to fig. 1 to 4, fig. 1 schematically illustrates an internal structure of a fluid storage tank 100 according to an embodiment of the present invention, fig. 2 is a fluid flow direction structure of the fluid storage tank 100 illustrated in fig. 1, fig. 3 is an overall structure of the fluid storage tank 100 illustrated in fig. 1, and fig. 4 is a structure of the fluid storage tank 100 illustrated in fig. 3 at a second viewing angle. The liquid storage tank 100 comprises a cylinder 10, a liquid inlet pipe 20, a liquid outlet pipe 30 and a heat return pipe 40, wherein a first inlet 11 is arranged on the cylinder 10, the liquid inlet pipe 20 is communicated with the cylinder 10, the liquid inlet pipe 20 is divided into a first pipe body 21 and a second pipe body 22 which are communicated with each other, the first pipe body 21 is positioned inside the cylinder 10, the second pipe body 22 is positioned outside the cylinder 10, the liquid outlet pipe 30 is communicated with the cylinder 10, the heat return pipe 40 is arranged inside the cylinder 10, one end of the heat return pipe 40 is communicated with an evaporator 200 through the first inlet 11, the other end of the heat return pipe 40 is communicated with a compressor 300, and at least part of the heat return pipe 40 is spirally arranged.

The utility model provides a liquid storage tube is the backheat pipe 40 that the heliciform set up through the inside setting at barrel 10 to be connected backheat pipe 40's one end and evaporimeter 200, then can introduce the inside of barrel 10 with evaporimeter 200 exhaust low temperature return air through backheat pipe 40, and get into from feed liquor pipe 20, and carry out the heat exchange from drain pipe 30 exhaust refrigerant, realize avoiding cold volume's waste to the reuse of cold volume.

It should be noted that, here, the heat recovery pipe 40 may be spirally disposed around the first pipe 21, so as to increase the heat exchange area between the heat recovery pipe 40 and the refrigerant, and improve the heat exchange efficiency.

It will be understood that the outlet pipe 30 is also divided into two parts, one part is a third pipe 31 located inside the cylinder 10, the other part is a fourth pipe 32 located outside the cylinder 10, and the inlet end 33 of the third pipe 31 is located inside the cylinder 10.

In some optional embodiments, the cylinder 10 is further provided with a first outlet 12, and the return air in the regenerative tube 40 is discharged outwards through the first outlet 12, specifically, the first outlet 12 may be communicated with the compressor 300, so that the return air after heat exchange in the regenerative tube 40 is delivered to the compressor 300, and a gas circulation process is achieved.

In some alternative embodiments, the cylinder 10 is a cylinder structure with two closed ends, the cylinder 10 includes a first end wall 14, a side wall 13 and a second end wall 15, two ends of the side wall 13 are respectively connected with the first end wall 14 and the second end wall 15, and the cylinder 10 may be a cylinder structure, a rectangular cylinder structure, or other shapes of cylinder structures. Here, the first outlet 12 may be provided in one of the first end wall 14 and the second end wall 15, and correspondingly, the first inlet 11 may be provided in the other of the first end wall 14 and the second end wall 15, or the first inlet 11 may be provided in the side wall 13. By adopting either of the two structures, the regenerative tube 40 can have a larger heat exchange area in the cylinder 10, so as to meet the heat exchange requirement.

The arrangement here can be varied, for example, by arranging the first inlet 11 on the first end wall 14, while arranging the first outlet 12 on the second end wall 15; or the first outlet 12 is provided in the first end wall 14 while the first inlet 11 is provided in the second end wall 15; or the first inlet 11 is provided in the first end wall 14 and the first outlet 12 is provided in the side wall 13; alternatively, the first inlet 11 is provided in the second end wall 15 and the first outlet 12 is provided in the side wall 13.

In the configuration illustrated in fig. 1, the first outlet 12 is disposed on the first end wall 14, and the liquid outlet pipe 30 and the liquid inlet pipe 20 are disposed on the second end wall 15, that is, the liquid storage tank 100 is in a vertical upside-down configuration, and the refrigerant inlet and outlet are installed in a downward direction. I.e. in the vertical direction, the first inlet 11, the liquid inlet pipe 20 and the liquid outlet pipe 30 are located at the lower portion of the cylinder 10. Here, the first inlet 11 may be disposed on the second end wall 15 or on the side wall 13, and the first inlet 11 is disposed at a position of the side wall 13 close to the second end wall 15 in fig. 1, that is, the first inlet 11 is disposed at a lower position of the side wall 13, so that the occupied area of the regenerative tube 40 in the cylinder 10 is larger.

To describe the approach concept more accurately here, as shown in fig. 2, the distance L1 between the first inlet 11 and the second end wall 15 is made smaller than a preset value, which is 0.1 to 0.3 times the axial length L2 of the cylinder 10. The position of the first inlet 11 can be accurately defined by this distance definition. Where L1 and L2 are labeled in fig. 2, L1 is the distance between the bottom of the first inlet 11 and the bottom of the second end wall 15, and L2 refers to the total length of the barrel 10.

The preset value can be 0.2 times of the axial length of the cylinder 10 or 0.15 times of the axial length of the cylinder 10, and the effect of sufficient heat exchange can be achieved.

Here, for convenience of description, the regenerator tube 40 is segmented and described in segments. Specifically, the regenerative tube 40 includes a spiral portion 41 and a connection portion 42, the spiral portion 41 being disposed spirally; the first tube 21 extends along the axial direction of the cylinder 10, and the outlet end 211 of the first tube 21 protrudes from the spiral portion 41 or is flush with the end of the spiral portion 41 facing the first outlet 12. In fig. 1, the outlet end 211 of the first tube 21 is disposed to protrude from the spiral portion 41.

Here, the outlet end 211 of the first tube 21 is disposed close to the first end wall 14, that is, the length of the first tube 21 is long, so that the liquid refrigerant has a long flow path inside the cylinder 10, thereby improving the heat exchange efficiency with the heat recovery pipe 40.

It should be noted that the first end wall 14 has an arc-shaped plate structure, such as a hemisphere, which facilitates the gas to flow out from the position of the first outlet 12 after converging from the periphery of the first end wall 14, where the first outlet 12 is located at the top of the first end wall 14. The second end wall 15 may also be curved or flat, such as hemispherical or flat, and in fig. 1, the second end wall 15 is flat to facilitate connection of the inlet pipe 20 and the outlet pipe 30 to the second end wall 15.

The protrusion of the spiral portion 41 means that the outlet end 211 of the first tube 21 is located outside the spiral portion 41 extending along the axial direction, so that the liquid refrigerant entering the first tube 21 can exchange heat with the regenerative tube 40 sufficiently.

Here, the connection portions 42 are disposed at both ends of the spiral portion 41, and the connection portions 42 are respectively inserted into the first inlet 11 and the first outlet 12, where the connection portions 42 are for facilitating connection of the heat recovery pipe 40 with other components, such as the evaporator 200 or the compressor 300.

In alternative embodiments, as shown in FIG. 2, the distance L1 between the first inlet 11 and the second end wall 15 is greater than the distance between the inlet end 33 of the outlet pipe 30 and the second end wall 15, i.e., the inlet end 33 of the outlet pipe 30 is located at a higher position than the inlet end 33 of the first inlet 11, so that the liquid refrigerant can undergo sufficient heat exchange before flowing out of the inlet end 33 of the outlet pipe 30.

In some optional embodiments, the distance between the liquid outlet pipe 30 and the first inlet 11 is smaller than the distance between the liquid inlet pipe 20 and the first inlet 11, that is, the first inlet 11 is disposed closer to the liquid outlet pipe 30 and relatively far away from the liquid inlet pipe 20, where the distance between the liquid outlet pipe 30 and the first inlet 11 is relatively smaller, so that the inlet air of the low-temperature return air and the outflow of the liquid refrigerant after the temperature is reduced form a counter flow, which is beneficial to improving the heat exchange efficiency.

In some optional embodiments, the heat recovery pipe 40 is a threaded pipe, and the thread pitch of the threaded pipe is relatively small, and the threaded pipe adopting such a structure can greatly increase the contact area of the heat recovery pipe 40 with the normal-temperature liquid refrigerant in the cylinder 10, and increase the heat exchange area of the low-temperature return gas and the normal-temperature liquid refrigerant.

With reference to fig. 3, the flow direction of the fluid in the receiver 100 will be described, which relates to the flow direction of the liquid refrigerant and the flow direction of the low-temperature return gas, wherein the flow direction of the liquid refrigerant is indicated by a wide arrow, and the flow direction of the low-temperature return gas is indicated by a narrow arrow, the liquid refrigerant flowing out of the condenser 400 enters the interior of the cylinder 10 through the liquid inlet pipe 20, and can exchange heat with the return pipe 40 during the upward flow of the liquid refrigerant, and the liquid refrigerant flowing out of the outlet end 211 of the liquid inlet pipe 20 will flow downward under the action of its own gravity and the inner surface of the first end wall 14, and can exchange heat with the return pipe 40 sufficiently during the downward flow, so as to achieve sufficient heat exchange with the normal-temperature liquid refrigerant. The liquid refrigerant with the decreased temperature enters the liquid outlet pipe 30 from the inlet end 33 of the liquid outlet pipe 30, and then flows out of the cylinder 10 along the liquid outlet pipe 30 to the inside of the evaporator 200.

In fig. 1, the liquid level 50 of the liquid refrigerant is marked, and it should be noted that the liquid level 50 is varied, and when the opening degree of the expansion valve of the evaporator 200 is relatively large, the liquid refrigerant is stored in a small amount and the liquid level 50 is low. Conversely, when the opening degree of the expansion valve of the evaporator 200 is relatively small, the liquid surface 50 is high, and the liquid refrigerant storage amount is large.

By providing the liquid refrigerant storage amount inside the cylinder 10, sufficient heat exchange between the liquid refrigerant and the regenerative tube 40 can be achieved.

According to the second aspect of the embodiment of the present invention, a cold chain device is provided, which comprises an evaporator 200, a compressor 300 and the liquid storage tank 100 mentioned in the above embodiment, one end of the heat return pipe 40 is communicated with the evaporator 200 through the first inlet 11, and the other end of the heat return pipe 40 is communicated with the compressor 300 through the first outlet 12.

It should be noted that the evaporator 200 is also connected to the outlet pipe 30 of the refrigerant, so that the liquid refrigerant with reduced temperature can flow out of the receiver 100.

The utility model provides a cold chain equipment, the liquid refrigerant of normal atmospheric temperature that comes out from condenser 400 get into liquid storage pot 100 through the longer feed liquor pipe 20 of length, and liquid storage pot 100 provides normal atmospheric temperature high pressure refrigerant for refrigerating system through the shorter drain pipe 30 of length. The low-temperature return air flowing out of the evaporator 200 enters the liquid storage tank 100 through the first inlet 11 on the side surface, and the cold energy is transferred to the normal-temperature liquid refrigerant under the huge contact area of the heat return pipe 40, so that the return air temperature flowing out of the liquid storage tank 100 can be raised, the technical effect of the liquid refrigerant flowing out of the liquid storage tank 100 under the temperature can be achieved, and the utilization of the cold energy can be realized.

Wherein, the temperature of the liquid refrigerant flowing out of the liquid storage tank 100 is reduced, and the refrigerating capacity of the cold chain equipment can be improved. Compared with the cold chain equipment with the liquid storage tank 100 and the heat regenerator which are mutually independent in the prior art, the cost can be reduced, and the waste of the cooling capacity of the return air is reduced.

In addition, the liquid storage tank 100 is vertically inverted, that is, in the vertical direction, the first inlet 11, the liquid inlet pipe 20 and the liquid outlet pipe 30 are all located at the lower portion of the cylinder 10, wherein the lower portion may be a position of the second end wall 15, or a position of the side wall 13 close to the second end wall 15, so that the flow of the normal temperature refrigerant in the cylinder 10 is longer, and heat exchange is fully performed between the normal temperature refrigerant and the heat return pipe 40.

As shown in fig. 6, the cold chain apparatus further includes an oil separator 500 and a dryer 600, and a defrosting pipeline 700 is further disposed in the cold chain apparatus, and the defrosting pipeline 700 is used for defrosting the evaporator 200 by the high-pressure and high-temperature gas discharged from the compressor 300. Arrows in fig. 6 indicate the flow direction of the fluid, the gas discharged from the compressor 300 passes through the oil separator 500, then sequentially passes through the condenser 400, the liquid storage tank 100, the dryer 600, the evaporator 200 and the liquid storage tank 100, and then flows back to the compressor 300, the input end of the defrosting pipeline 700 is communicated with the outlet of the oil separator 500, and the output end of the defrosting pipeline 700 is communicated with the inlet of the evaporator 200.

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. The utility model provides a liquid storage pot, is applied to cold chain equipment which characterized in that, the liquid storage pot includes:

the device comprises a cylinder body, a first inlet and a second inlet, wherein the cylinder body is provided with the first inlet;

the liquid inlet pipe is communicated with the barrel;

the liquid outlet pipe is communicated with the barrel; and

the heat recovery pipe is arranged inside the barrel, one end of the heat recovery pipe is communicated with the evaporator of the cold chain equipment through the first inlet, and at least part of the heat recovery pipe is spirally arranged.

2. The fluid reservoir of claim 1, wherein said bowl comprises a side wall, a first end wall, and a second end wall, wherein said side wall is connected at each end to said first end wall and said second end wall;

one of the first end wall and the second end wall is provided with a first outlet;

the first inlet is provided in the other of the first end wall and the second end wall or in the side wall.

3. The fluid storage tank of claim 2, wherein said first outlet is disposed on said first end wall, and said inlet tube and said outlet tube are both disposed on said second end wall;

the first inlet is arranged on the second end wall, or the first inlet is arranged on the side wall, and the distance between the first inlet and the second end wall is smaller than a preset value, wherein the preset value is 0.1-0.3 times of the axial length of the cylinder body.

4. The fluid reservoir of claim 2, wherein said regenerator tube comprises a spiral portion;

the liquid inlet pipe comprises a first pipe body and a second pipe body which are mutually communicated, the first pipe body is arranged inside the cylinder body, and the second pipe body is arranged outside the cylinder body;

the first pipe body extends along the axial direction of the cylinder body, and the outlet end of the first pipe body protrudes out of the spiral part or is flush with the end part of the spiral part facing the first outlet.

5. The fluid reservoir of claim 4, wherein the regenerator tube further comprises a connecting portion disposed at both ends of the spiral portion, and the connecting portion is inserted into the first inlet and the first outlet, respectively.

6. The fluid reservoir of claim 2, wherein a distance between the inlet end of the outlet conduit and the second end wall is less than a distance between the first inlet and the second end wall.

7. The fluid reservoir of claim 1, wherein a distance between said outlet tube and said first inlet is less than a distance between said inlet tube and said first inlet.

8. The fluid reservoir of any one of claims 1-7, wherein the return tube is a threaded tube.

9. A cold chain apparatus, comprising:

an evaporator; and

the liquid reservoir as defined in any one of claims 1 to 8, wherein one end of said return pipe communicates with said evaporator through said first inlet.

10. The cold chain apparatus of claim 9, wherein the first inlet, the liquid inlet pipe, and the liquid outlet pipe are located at a lower portion of the cylinder in a vertical direction.

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