CN218955278U - Drainage assembly and refrigeration equipment - Google Patents

Abstract

The utility model belongs to the technical field of refrigeration, and particularly relates to a drainage assembly and refrigeration equipment. The drainage assembly comprises a drainage pipe and a refrigerant pipe, the refrigerant pipe is communicated with the evaporator and used for providing liquid refrigerant for the evaporator, and part of the refrigerant pipe is in heat conduction connection with the drainage pipe. According to the drainage assembly, the refrigerant pipe is communicated with the evaporator, and part of the refrigerant pipe is in heat conduction connection with the drainage pipe, so that the drainage pipe can be heated due to the fact that the temperature of the refrigerant pipe is higher than that of the drainage pipe when the refrigerant pipe works, water cannot be solidified when passing through the drainage pipe, the drainage of the drainage pipe is smooth, and ice blockage phenomenon cannot occur.

Description

Drainage assembly and refrigeration equipment

Technical Field

The utility model belongs to the technical field of refrigeration, and particularly relates to a drainage assembly and refrigeration equipment.

Background

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

When the refrigerating equipment in the prior art is operated, defrosting water on an evaporator of the internal machine is discharged outdoors through the drain pipe, and as the indoor temperature of the refrigerating equipment can be below minus ten octaves, the defrosting water can cause the situation that water freezes in the drain pipe to block the drain pipe in the draining process.

In the deicing method in the prior art, an electric heating wire is arranged on the indoor side of a drain pipe, and the deicing is performed by providing power supply through an onboard storage battery to generate heat.

Disclosure of Invention

The utility model aims to at least solve the problem that the water in the prior art is frozen in the water drainage pipe to cause the blockage of the water drainage pipe. The aim is achieved by the following technical scheme:

a first aspect of the present utility model proposes a drain assembly for use in a refrigeration appliance including an evaporator, the drain assembly comprising:

a drain pipe; and

and the refrigerant pipe is communicated with the evaporator and is used for providing liquid refrigerant for the evaporator, and part of the refrigerant pipe is in heat conduction connection with the drain pipe.

According to the drainage assembly, the refrigerant pipe is communicated with the evaporator, and part of the refrigerant pipe is in heat conduction connection with the drainage pipe, and the drainage pipe can be heated because the temperature of the refrigerant pipe is higher than that of the drainage pipe during working, so that water cannot be solidified when passing through the drainage pipe, the drainage of the drainage pipe is smooth, and ice blockage phenomenon cannot occur.

In addition, the drainage assembly according to the utility model may have the following additional technical features:

in some embodiments of the utility model, the refrigerant tube comprises:

the liquid supply pipe is communicated with the evaporator and the condenser of the refrigeration equipment, and part of the liquid supply pipe is in heat conduction connection with the drain pipe.

In some embodiments of the utility model, a portion of the liquid supply pipe is installed in parallel with the drain pipe, and a distance between a portion of the liquid supply pipe and the drain pipe is less than a preset value.

In some embodiments of the utility model, the preset value is 0.5 to 2 millimeters.

In some embodiments of the utility model, a portion of the liquid supply pipe is attached to the drain pipe arrangement.

In some embodiments of the utility model, the refrigerant tube further comprises:

one end of the defrosting pipe is communicated with the evaporator, and the other end of the defrosting pipe is communicated with an exhaust port of a compressor of the refrigeration equipment and is used for defrosting the evaporator;

and part of the defrosting pipes are in heat conduction connection with the drain pipes.

In some embodiments of the present utility model, the defrosting pipe is provided with a first valve assembly for controlling on-off of the defrosting pipe.

A second aspect of the present utility model proposes a refrigeration apparatus comprising:

an evaporator; and

the drain assembly as described in the above embodiments, the refrigerant pipe communicates with the evaporator.

According to the refrigeration equipment disclosed by the utility model, the refrigerant pipe is communicated with the evaporator, and part of the refrigerant pipe is in heat conduction connection with the drain pipe, and the drain pipe can be heated because the temperature of the refrigerant pipe in operation is higher than that of the drain pipe, so that water cannot be solidified when passing through the drain pipe, the drain pipe is ensured to be smooth, and the phenomenon of ice blockage cannot occur.

In addition, the refrigeration equipment according to the utility model can also have the following additional technical characteristics:

in some embodiments of the utility model, the refrigeration apparatus is a refrigerated vehicle, and the refrigeration apparatus further comprises:

the condenser is communicated with the evaporator through the refrigerant pipe;

a liquid storage tank, a dry filter and an air return device are sequentially arranged between the condenser and the evaporator.

In some embodiments of the utility model, the refrigeration appliance further comprises:

the compressor is communicated with the condenser, and an oil separator is arranged between the compressor and the condenser.

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 utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 schematically shows a schematic structural view of a refrigeration apparatus according to an embodiment of the present utility model;

fig. 2 is a schematic view of a partial enlarged structure at a in fig. 1.

The reference numerals are as follows:

100 is a refrigeration device;

10 is a drainage assembly, 11 is a drainage pipe, 12 is a refrigerant pipe, 121 is a liquid supply pipe, 122 is a defrosting pipe, 123 is a first valve assembly, 124 is an expansion valve, 125 is a high-voltage protection switch, and 126 is a low-voltage protection switch;

the evaporator is 20, and the evaporating fan is 21;

30 is a condenser, 31 is a condensing fan;

40 is a compressor;

50 is an oil separator;

60 is a liquid storage tank;

70 is a dry filter;

80 is an air return device;

90 is an air suction regulating valve;

101 is an external machine and 102 is an internal machine.

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" are 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 an order of performance is explicitly stated. It should also be appreciated 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 ease 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 upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

As shown in fig. 1 to 2, according to a first aspect of an embodiment of the present utility model, a drain assembly 10 is provided, which is applied to a refrigeration apparatus 100, wherein fig. 1 schematically shows a schematic structural diagram of the refrigeration apparatus 100 according to an embodiment of the present utility model. The refrigeration apparatus 100 includes an evaporator 20, a condenser 30 and a compressor 40, the drain assembly 10 includes a drain pipe 11 and a refrigerant pipe 12, the refrigerant pipe 12 is in communication with the evaporator 20 for providing liquid refrigerant to the evaporator 20, and a portion of the refrigerant pipe 12 is in heat conductive connection with the drain pipe 11.

According to the drainage assembly 10 disclosed by the utility model, the refrigerant pipe 12 is communicated with the evaporator 20, and part of the refrigerant pipe 12 is in heat conduction connection with the drainage pipe 11, and the drainage pipe 11 can be heated due to the fact that the temperature of the refrigerant pipe 12 is higher than that of the drainage pipe 11 in operation, so that the temperature of the drainage pipe 11 is higher than a freezing point, water cannot be solidified when passing through the drainage pipe 11, the drainage of the drainage pipe 11 is ensured to be smooth, and ice blocking phenomenon cannot occur.

In the operation process of the refrigeration equipment 100, the temperature of the liquid refrigerant is higher than the freezing point, so that the situation of freezing can not occur near the refrigerant pipe, and therefore, the drain pipe 11 and part of the refrigerant pipe 12 are connected in a heat conduction manner, so that the phenomenon of freezing can not occur in the drain pipe 11, and the drain of the drain pipe 11 is smooth.

The main function of the drain assembly 10 is to prevent the drain pipe 11 from being blocked by ice, thereby heating the drain pipe 11 and preventing water in the drain pipe 11 from freezing.

It should be noted that, the refrigerant pipe 12 includes a plurality of pipes, and the temperature of each pipe is not necessarily identical, and the portion of the refrigerant pipe 12 mainly refers to a portion of the refrigerant pipe 12 near the drain pipe 11, where the temperature of the portion is higher than the temperature of the drain pipe 11 and higher than the indoor environment temperature.

The liquid supplying portion and the defrosting portion of the refrigerant pipe 12 will be described below. Referring to fig. 1 and 2, fig. 2 is a partially enlarged schematic view of the structure of fig. 1 a. Optionally, the refrigerant pipe 12 includes a liquid supply pipe 121, the liquid supply pipe 121 communicates with the evaporator 20 and the condenser 30 of the refrigeration apparatus 100, and a part of the liquid supply pipe 121 is thermally connected with the drain pipe 11. Here, the drain pipe 11 is heated by thermally connecting a part of the liquid supply pipe 121 to the drain pipe 11 and by the liquid supply pipe 121 having a temperature higher than that of the drain pipe 11.

The portion of the liquid supply pipe 121 thermally connected to the drain pipe 11 is configured in a U-shape, so that the liquid refrigerant can circulate inside the liquid supply pipe 121 to form a relatively large heating area, thereby heating the drain pipe 11.

In some embodiments, as shown in fig. 2, a part of the liquid supply pipe 121 is installed in parallel with the drain pipe 11, the liquid supply pipe 121 is located at a side of the drain pipe 11 near the evaporator 20, and a distance L between the part of the liquid supply pipe 121 and the drain pipe 11 is less than a preset value, which is 0.5 to 2 mm. The preset value may be 1 mm or 0.8 mm, and the smaller the distance between the liquid supply pipe 121 and the drain pipe 11 is, the better the heat conduction effect between the liquid supply pipe 121 and the drain pipe 11 is, however, the preset value may be less than 0.5 mm, such as 0.3 mm.

The distance L is the distance between the right end of the liquid supply pipe 121 and the left end of the drain pipe 11 in fig. 2, that is, the distance L is close to the distance between the drain pipe 11 and the liquid supply pipe 121, so that the liquid supply pipe 121 heats the drain pipe 11 to prevent water in the drain pipe 11 from freezing.

As an ideal case, the distance between the part of the liquid supply pipe 121 and the drain pipe 11 is zero, that is, the part of the liquid supply pipe 121 is attached to the drain pipe 11, at this time, the part of the liquid supply pipe 121 contacts with the drain pipe 11, and heat conduction between the liquid supply pipe 121 and the drain pipe 11 can be realized by heat conduction besides radiation heat conduction.

The fact that the liquid supply pipe 121 is partially attached to the drain pipe 11 means that both are attached to each other in the longitudinal direction.

When necessary, a part of the drain pipe 11 may be formed inside the U-shaped structure, and the drain pipe 11 may be heated from both sides of the drain pipe 11.

The drain pipe 11 may be in the shape of a square pipe, and the liquid supply pipe 121 may be a square pipe. When the drain pipe 11 is a circular pipe, the liquid supply pipe 121 may be a circular pipe accordingly.

In addition, the temperature of the liquid supply pipe 121 during operation is related to the condensation temperature of the condenser 30, and for a typical refrigeration apparatus 100, the temperature of the liquid supply pipe 121 is typically 30 degrees celsius, such as 32 degrees celsius or 35 degrees celsius, so that the drain pipe 11 can be heated.

In some embodiments, the drain pipe 11 may be heat-conductive through a defrosting pipe in the refrigerant pipe 12. In this embodiment, the refrigerant pipe 12 further includes a defrosting pipe 122, one end of the defrosting pipe 122 is communicated with the evaporator 20, and the other end of the defrosting pipe 122 is communicated with the exhaust port of the compressor 40 of the refrigeration apparatus 100 for defrosting the evaporator 20; one end of the defrosting pipe 122, which is communicated with the evaporator 20, is an outlet of the defrosting pipe 122, the other end of the defrosting pipe 122, which is communicated with the compressor 40, is an inlet of the defrosting pipe 122, and a part of the defrosting pipe 122 is in heat conduction connection with the drain pipe 11. Wherein, the temperature of defrosting pipe 122 is higher than that of liquid supply pipe 121, the effect of heating drain pipe 11 can also be realized, so that the water in drain pipe 11 will not solidify.

In this embodiment, the defrosting pipe 122 is used as a heat source to conduct heat to the drain pipe 11, so that the phenomenon of ice blockage in the drain pipe 11 is prevented. Of course, the drain pipe 11 may be heated by using both the liquid supply pipe 121 and the defrosting pipe 122 as heat sources.

Whether the liquid supply pipe 121 or the defrosting pipe 122 is adopted to heat the drain pipe 11 or the liquid supply pipe 121 and the defrosting pipe 122 are adopted to heat the drain pipe 11 simultaneously, the heat of the refrigerating equipment 100 is utilized to heat the drain pipe 11, no additional power supply is needed, and the cost of the refrigerating equipment 100 is not increased.

Compared with the technical scheme of adopting the electric heating wire in the prior art, the drainage assembly 10 not only reduces the power supply and the cost of the refrigeration equipment 100, but also can avoid the phenomenon that the insulating layer on the surface is easy to age and damage under the condition of low temperature for a long time.

In some embodiments, the defrosting pipe 122 is provided with a first valve assembly 123 for controlling the on-off of the defrosting pipe 122, and the opening or the disconnection of the defrosting pipe 122 is realized by controlling the first valve assembly 123. When the temperature is relatively low, the evaporator 20 needs to be defrosted, the first valve assembly 123 is opened, so that the defrosting pipe 122 enters an operating state to defrost the evaporator 20. When the defrosting operation is not required to be performed, the first valve assembly 123 is opened so that the defrosting pipe 122 is in a non-operating state.

The first valve assembly 123 may be a solenoid valve, or may be another valve for controlling the on-off of a pipeline.

According to a second aspect of the embodiment of the present utility model, a refrigeration apparatus 100 is provided, the refrigeration apparatus 100 comprising an evaporator 20 and a drain assembly 10 as mentioned in the above example, the refrigerant pipe 12 being in communication with the evaporator 20.

The refrigeration appliance 100 may be a refrigeration appliance, such as a refrigerator car, freezer, or the like, or a refrigeration appliance, such as a refrigerator car, freezer, or the like.

In some embodiments, the refrigeration appliance 100 further includes a condenser 30, the condenser 30 being in communication with the evaporator 20 through the refrigerant line 12; a liquid storage tank 60, a dry filter 70, and an air return 80 are sequentially provided in a line communicating between the condenser 30 and the evaporator 20 along the flow direction of the fluid. The liquid storage tank 60, the drying filter 70 and the air return 80 are all common components in the prior art, and the functions and specific connection modes thereof will not be described in detail herein.

In some embodiments, the refrigeration apparatus 100 further includes a compressor 40, the compressor 40 and the condenser 30 being in communication, and an oil separator 50 being disposed between the compressor 40 and the condenser 30.

A check valve (not shown) is further provided in a line between the compressor 40 and the condenser 30, so that the discharge gas in the compressor 40 flows unidirectionally.

Arrows in fig. 1 indicate the flow direction of the fluid. The operation of the refrigeration appliance 100 will be described in connection with the flow of fluid as shown in fig. 1.

The compressor 40 emits high-temperature and high-pressure gas, the high-temperature and high-pressure gas flows to the oil separator 50, the fluid after oil-gas separation enters the condenser 30, then sequentially flows through the liquid storage tank 60, the dry filter 70 and the air return device 80, enters the evaporator 20, and the fluid flowing out of the evaporator 20 sequentially flows back to the compressor 40 after sequentially flowing through the air return device 80 and the air suction adjusting valve 90, so that the circulation process of the fluid of the refrigeration equipment 100 is realized.

The first protection switch 125 is provided in the refrigerant pipe 12 between the compressor 40 and the oil separator 50, and the second protection switch 126 is provided in the refrigerant pipe 12 between the suction regulator 90 and the compressor 40. The refrigerant pipe 12 between the air return 80 and the dry filter 70 is a liquid supply pipe 121 in the present utility model.

One end of the defrosting pipe 122 is communicated with the outlet of the oil separator 50, the other end of the defrosting pipe 122 is connected with the air return 80, and a first valve assembly 123 is arranged on the defrosting pipe 122. That is, the fluid separated by the oil separator 50 is divided into two paths, wherein one path of fluid enters the condenser 30 to realize refrigeration; the other fluid enters the defrosting pipe 122 to defrost the evaporator 20.

One end of the defrosting pipe 122 is referred to herein as an inlet of the defrosting pipe 122, the other end of the defrosting pipe 122 is referred to herein as an outlet of the defrosting pipe 122, the first valve assembly 123 is used for controlling the connection or disconnection of the defrosting pipe 122, and the expansion valve 124 is a thermal expansion valve installed near the inlet of the evaporator 20.

The first protection switch 125 is a high-voltage protection switch, the second protection switch 126 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 both switches for protecting a pipeline where the high-voltage protection switch and the low-voltage protection switch are opposite, and when the pressure in the pipeline is too high, the first protection switch 125 is turned off to protect the compressor 40. When the pressure in the pipeline is too low, the second protection switch 126 is opened to protect the compressor 40.

When the refrigerating apparatus 100 is in normal operation, condensed water generated from the evaporator 20 is collected on a water receiving tray (not shown) when the indoor temperature is higher than zero degrees celsius, and the condensed water is not frozen on the water receiving tray due to the indoor temperature higher than zero degrees celsius, and at this time, the water is directly discharged out of the room through the drain pipe 11. When the room temperature is lower than or equal to zero ℃, frost is formed on the evaporator 20, no condensed water is accumulated on the water receiving tray, when the normal operation of the refrigeration equipment 100 is affected by the thickness of the frost formed on the evaporator 20, the first valve assembly 123 on the defrosting pipe 122 is opened, the high-temperature and high-pressure gas discharged by the compressor 40 heats the evaporator 20 through the defrosting pipe 122, so that the frost on the evaporator 20 is melted, and the melted water is accumulated at the position of the drain pipe 11 and is discharged through the inner side of the drain pipe 11.

The liquid supply pipe 121 and/or the defrosting pipe 122 can be used for heating the drain pipe 11 independently or simultaneously, so that the temperature in the drain pipe 11 is kept higher than the freezing point, the phenomenon of low-temperature solidification can not occur when defrosting water passes through the drain pipe 11, the drain function of the drain pipe 11 is smooth, and the phenomenon of ice blockage is avoided.

Wherein, the freezing point mentioned in the utility model is zero degrees centigrade.

The evaporator 20 is provided with at least one evaporation fan 21, and in fig. 1, the number of evaporation fans 21 is two. A condensing fan 31 is provided in the vicinity of the condenser 30, and the number of condensing fans 31 is at least one, and in fig. 1, the number of condensing fans 31 is two.

The evaporating fan 21 and the condensing fan 31 are common products in the prior art, and the evaporating fan 21 and the condensing fan 31 are not further described herein.

In addition, the refrigerating apparatus 100 herein includes an outer machine 101 and an inner machine 102, the inner machine 102 is disposed on the indoor side, wherein the coverage of the inner machine 102 is corresponding to the corresponding part in the corresponding dashed line box in fig. 1, the coverage of the inner machine 102 is corresponding to the corresponding part in the dashed line box on the right side in fig. 1, and the inner machine 102 specifically includes the air return 80, the evaporator 20, the evaporation fan 21, the first valve assembly 123, the expansion valve 124, and the portion of the defrosting pipe 122.

The outdoor unit 101 is disposed outdoors, and the outdoor unit 101 is a part corresponding to a broken line frame on the left side in fig. 1, and the outdoor unit 101 specifically includes a compressor 40, an oil separator 50, a condenser 30, a condensing fan 31, a liquid storage tank 60, a dry filter 70, and an intake air adjusting valve 90.

It should be noted that the connection between the inner machine 102 and the outer machine 101 is made by a rubber hose.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. A drain assembly for use in a refrigeration appliance including an evaporator, the drain assembly comprising:

a drain pipe; and

the refrigerant pipe is communicated with the evaporator and used for providing liquid refrigerant for the evaporator, and part of the refrigerant pipe is in heat conduction connection with the drain pipe.

2. The drain assembly of claim 1, wherein the refrigerant tube comprises:

the liquid supply pipe is communicated with the evaporator and the condenser of the refrigeration equipment, and part of the liquid supply pipe is in heat conduction connection with the drain pipe.

3. The drain assembly of claim 2, wherein a portion of the liquid supply pipe is mounted in parallel with the drain pipe and a portion of the distance between the liquid supply pipe and the drain pipe is less than a preset value.

4. A drain assembly as claimed in claim 3, wherein the predetermined value is 0.5 to 2 mm.

5. A drain assembly according to claim 3, wherein a portion of the supply tube is fitted to the drain tube arrangement.

6. The drain assembly of claim 1 or 2, wherein the refrigerant tube further comprises:

one end of the defrosting pipe is communicated with the evaporator, and the other end of the defrosting pipe is communicated with an exhaust port of a compressor of the refrigeration equipment and is used for defrosting the evaporator;

and part of the defrosting pipe is in heat conduction connection with the drain pipe.

7. The drain assembly of claim 6, wherein the defrosting tube is provided with a first valve assembly for controlling on-off of the defrosting tube.

8. A refrigeration appliance, the refrigeration appliance comprising:

an evaporator; and

the drain assembly of any one of claims 1 to 7, said refrigerant tube being in communication with said evaporator.

9. The refrigeration apparatus of claim 8 wherein the refrigeration apparatus is a refrigerated vehicle and further comprising:

the condenser is communicated with the evaporator through the refrigerant pipe;

a liquid storage tank, a dry filter and an air return device are sequentially arranged between the condenser and the evaporator.

10. The refrigeration appliance of claim 9 further comprising:

the compressor is communicated with the condenser, and an oil separator is arranged between the compressor and the condenser.

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