CN212721956U - Inspection tool for refrigerator vacuum pipeline - Google Patents
Inspection tool for refrigerator vacuum pipeline Download PDFInfo
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- CN212721956U CN212721956U CN202021467411.9U CN202021467411U CN212721956U CN 212721956 U CN212721956 U CN 212721956U CN 202021467411 U CN202021467411 U CN 202021467411U CN 212721956 U CN212721956 U CN 212721956U
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Abstract
The utility model provides a checking tool for a refrigerator vacuum pipeline, which comprises a detection pipeline, an air extractor, a vacuum measuring instrument and a plugging piece; one end of the detection pipeline is provided with a sealing joint which can be detachably connected with one end of the vacuum pipeline in a sealing way; the block piece can be detachably connected with the other end of the vacuum line to close the end. Therefore, the vacuum pipeline can be vacuumized through the air suction device on the detection pipeline, and the vacuum pressure of the vacuum pipeline is measured on the vacuum measuring instrument. The preset vacuum pressure of the air extractor is compared with the vacuum pressure measured by the vacuum measuring instrument to measure the tightness of the vacuum pipeline. The tightness of the vacuum pipeline is detected before the foaming of the door body, so that the vacuum pipeline with good tightness and the door body are foamed together, the vacuum pipeline in the door body can be normally used, the waste of materials is avoided, and the economic cost is saved.
Description
Technical Field
The utility model relates to a refrigerator technical field, in particular to refrigerator vacuum line's inspection frock.
Background
As is known, food can be stored for a long time at a low temperature of refrigeration or freezing, the storage time of the food is not only influenced by temperature and humidity, but also influenced by factors such as oxygen content of air and bacteria in the storage environment of the food, and the food is not closed in an atmospheric environment and is easy to breed bacteria, so that the food is deteriorated. In order to keep food longer, a low-oxygen and low-bacteria food storage environment such as a vacuum fresh-keeping box is added on the basis of the original refrigerator function, so that the food can be stored for a longer time.
The vacuum preservation box is arranged on the inner side of the door body or in the box body, a vacuum pipeline is arranged in a foaming layer in the door body or in the box body, one end of the vacuum pipeline is connected with the vacuum preservation box, and the other end of the vacuum pipeline is connected with a vacuumizing structure in the box body so as to form a vacuum environment in the vacuum preservation box.
In the prior art, the vacuum line is typically provided as an integral component. Taking the vacuum pipeline in the door body as an example, the vacuum pipeline is pre-embedded in the door body before the door body is foamed. After the door body foams, the vacuum pipeline and the door body form a whole. However, if the sealing performance of the vacuum pipeline is poor, the whole door body cannot be used, and great economic loss is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a refrigerator vacuum pipeline's inspection frock to detect the leakproofness of vacuum pipeline before the foaming of the door body, foam with the good vacuum pipeline of leakproofness and the door body together, guarantee that the internal vacuum pipeline of door can normal use.
In order to solve the technical problem, the utility model adopts the following technical scheme:
according to one aspect of the utility model, the utility model provides a checking tool for refrigerator vacuum pipelines, which comprises a detection pipeline, an air extractor, a vacuum measuring instrument and a plugging piece; one end of the detection pipeline is provided with a sealing joint which can be detachably connected with one end of the vacuum pipeline in a sealing way; the air extracting device is arranged at the other end of the detection pipeline; the vacuum measuring instrument is connected to the detection pipeline, is communicated with the detection pipeline and is used for detecting the vacuum degree or pressure; a closure member is removably attachable to the other end of the vacuum line to close the end.
In some embodiments, the sealing joint comprises a fixing part connected to one end of the detection pipeline, and a clamping part protruding on one side of the fixing part, which is far away from the detection pipeline; a through hole is formed between the fixing part and the clamping part; the clamping part can extend into the vacuum pipeline and can be elastically pressed on the inner periphery of the vacuum pipeline; the fixing portion extends outward in the circumferential direction beyond the engaging portion.
In some embodiments, the inspection tool further includes a sealing valve for changing a sealing state of the vacuum pipeline, and the sealing valve is connected to the detection pipeline and is communicated with the detection pipeline.
In some embodiments, the sealing valve is in communication with an ambient space to enable selective release of ambient air into the vacuum line.
In some embodiments, the inspection tool further comprises a controller, and the suction device, the vacuum gauge, and the sealing valve are all electrically connected to the controller.
In some embodiments, the detection pipeline comprises a first extension pipe, a three-way joint and a second extension pipe which are connected in sequence; the first extension pipe is used for being connected with the vacuum pipeline, and one end of the first extension pipe is connected with one interface of the three-way joint; one end of the second extension pipe is connected with the air exhaust device, and the other end of the second extension pipe is connected with one interface of the three-way joint; and the vacuum measuring instrument is connected with one interface of the three-way joint.
In some embodiments, the first extension pipe and the second extension pipe are both hoses.
In some embodiments, a valve is disposed on the block piece, and the valve can open or close the vacuum pipeline so as to selectively release the outside air into the vacuum pipeline.
In some embodiments, the closure is a pneumatic fitting.
In some embodiments, the gas evacuation device is a vacuum pump.
According to the above technical scheme, the utility model discloses following advantage and positive effect have at least:
in the utility model, one end of the detection pipeline is provided with a sealing joint which can be detachably connected with one end of the vacuum pipeline in a sealing way; the block piece can be detachably connected with the other end of the vacuum line to close the end. Therefore, the vacuum pipeline can be vacuumized through the air suction device on the detection pipeline, and the vacuum pressure of the vacuum pipeline is measured on the vacuum measuring instrument. The preset vacuum pressure of the air extractor is compared with the vacuum pressure measured by the vacuum measuring instrument to measure the tightness of the vacuum pipeline. The tightness of the vacuum pipeline is detected before the foaming of the door body, so that the vacuum pipeline with good tightness and the door body are foamed together, the vacuum pipeline in the door body can be normally used, the waste of materials is avoided, and the economic cost is saved.
After the plugging piece is detached from the vacuum pipeline, the pipeline is vacuumized by the air exhaust device, and the smoothness of the vacuum pipeline is judged according to the vacuum pressure of the vacuum pipeline measured on the vacuum measuring instrument, so that the smoothness of the vacuum pipeline foamed along with the door body is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the inspection tool of the present invention in a use state.
Fig. 2 is a schematic structural diagram of the inspection tool in fig. 1.
Fig. 3 is an enlarged view at a in fig. 2.
Fig. 4 is a schematic structural diagram of a second embodiment of the inspection tool of the present invention.
Fig. 5 is a control structure diagram of a second embodiment of the inspection tool of the present invention.
The reference numerals are explained below:
100. inspecting the tool; 110. detecting a pipeline; 111. a first extension pipe; 112. a second extension pipe; 113. a three-way joint; 114. sealing the joint; 1141. a fixed part; 1142. a fastening part; 120. a blocking member; 130. an air extraction device; 140. a vacuum gauge; 150. a sealing valve; 200. and a vacuum pipeline.
Detailed Description
Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the prior art, the vacuum line is typically provided as an integral component. Taking the vacuum pipeline in the door body as an example, the vacuum pipeline is pre-embedded in the door body before the door body is foamed. After the door body foams, the vacuum pipeline and the door body form a whole. However, if the sealing performance of the vacuum pipeline is poor, the whole door body cannot be used, and great economic loss is caused.
Fig. 1 is a schematic structural diagram of a first embodiment of the inspection tool of the present invention in a use state.
Referring to fig. 1, the embodiment provides an inspection tool 100 for detecting the sealing performance and the smoothness of a vacuum pipeline 200 before foaming of a refrigerator door or a refrigerator body, so as to avoid the foaming of the vacuum pipeline 200 with the refrigerator body or the door body due to poor sealing performance or poor smoothness.
In this embodiment, the inspection tool 100 includes a detection pipeline 110, a plugging member 120, an air extractor 130 connected to the detection pipeline 110, and a vacuum measuring instrument 140 connected to the detection pipeline 110. The plugging member 120 closes one end of the vacuum line 200, the air-extracting device 130 is hermetically connected to the other end of the vacuum line 200, and the vacuum degree of the vacuum line 200 is measured by the vacuum measuring instrument 140.
Fig. 2 is a schematic structural diagram of the inspection tool in fig. 1. Fig. 3 is an enlarged view at a in fig. 2.
Referring to fig. 1 to 3, in the present embodiment, the detection pipeline 110 includes a first extension pipe 111, a three-way joint 113 and a second extension pipe 112 connected in sequence.
The first extension pipe 111 and the second extension pipe 112 are both flexible pipes so as to be coupled with the vacuum line 200.
One end of the first extension pipe 111 is used for connecting with the vacuum line 200, and the other end of the first extension pipe 111 is connected with one port of the three-way joint 113. Specifically, one end of the first extension pipe 111 for connection with the vacuum line 200 is provided with a sealing joint 114, and the sealing joint 114 is hermetically connected with one end of the vacuum line 200.
The sealing nipple 114 can be removably connected to the vacuum line 200. So that the sensing line 110 can seal one end of the vacuum line 200 and can be separated from the vacuum line 200.
In this embodiment, the sealing joint 114 includes a fixing portion 1141 connected to one end of the detection pipe 110, and a fastening portion 1142 protruding from the fixing portion 1141 away from the detection pipe 110. The engaging portion 1142 can extend into the vacuum pipe 200 and can be elastically pressed on the inner circumference of the vacuum pipe 200 to engage the sealing joint 114 on the vacuum pipe 200.
In this embodiment, the engaging portion 1142 is a conical structure, so that the engaging portion 1142 can be inserted into the vacuum pipeline 200. The outer periphery of the fixing portion 1141 is larger than the outer periphery of the engaging portion 1142, so that after the engaging portion 1142 extends into the vacuum pipe 200, the fixing portion 1141 abuts against the open end of the vacuum pipe 200, and the vacuum pipe 200 is prevented from sucking the sealing joint 114 into the vacuum pipe 200 by the negative pressure in the vacuum pipe 200 after vacuum pumping.
In other embodiments, the fastening portion 1142 is a cylindrical structure, and the fastening portion 1142 is sleeved on the periphery of the vacuum pipe 200 and elastically pressed with the vacuum pipe 200.
In this embodiment, a through hole (not shown) is formed between the fixing portion 1141 and the engaging portion 1142, and the through hole penetrates through the fixing portion 1141 and the engaging portion 1142. After the sealing joint 114 is fixed to the vacuum line 200, the vacuum line 200 and the detection line 110 are connected through a through hole of the sealing joint 114.
Referring again to fig. 1 and 2, the air-extracting device 130 is disposed at an end of the detection pipe 110 away from the sealing joint 114. Specifically, the sealing joint 114 is connected to one end of the second extension pipe 112, and the other end of the second extension pipe 112 is connected to one port of the three-way joint 113.
In this embodiment, the air-extracting device 130 is a vacuum pump. After the plugging member 120 and the sealing joint 114 are connected to the vacuum line 200, the vacuum line 200 is evacuated by the evacuation device 130, and the vacuum degree of the vacuum line 200 is measured by the vacuum measuring instrument 140.
In this embodiment, the vacuum measuring instrument 140 is connected to one of the ports of the three-way joint 113 for measuring the vacuum degree or pressure of the vacuum pipeline 200.
The plugging member 120 closes one end of the vacuum pipeline 200, the sealing joint 114 on the detection pipeline 110 is connected to the other end of the vacuum pipeline 200 in a sealing manner, the suction device 130 on the detection pipeline 110 vacuumizes the vacuum pipeline 200, and the vacuum pressure of the vacuum pipeline 200 is measured on the vacuum measuring instrument 140. The predetermined vacuum pressure of the air-extracting device 130 is compared with the vacuum pressure measured by the vacuum measuring instrument 140 to measure the sealability of the vacuum line 200. The tightness of the vacuum pipeline 200 is detected before the foaming of the door body, so that the vacuum pipeline 200 with good tightness and the door body are foamed together, the vacuum pipeline 200 in the door body can be normally used, the waste of materials is avoided, and the economic cost is saved.
Referring again to fig. 1 and 2, the blocking member 120 can be removably coupled to an end of the vacuum line 200 to close the end of the vacuum line 200 and can be removed from the vacuum line 200.
In this embodiment, the blocking member 120 is provided with a valve capable of opening or closing the vacuum pipeline 200, so as to selectively release the external air into the vacuum pipeline 200.
After the air exhaust device 130 and the vacuum measuring instrument 140 measure the tightness of the vacuum pipeline 200, the plugging piece 120 is pulled out from the vacuum pipeline 200, the air exhaust device 130 is started again, the smoothness of the vacuum pipeline 200 is judged according to the vacuum pressure of the vacuum pipeline 200 measured by the vacuum measuring instrument 140, and the smoothness of the vacuum pipeline 200 foamed along with the door body is ensured.
In this embodiment, when the plugging member 120 is pulled out from the vacuum pipeline 200, the valve on the plugging member 120 is first opened, so that air enters the vacuum pipeline 200 to balance the pressure difference between the vacuum pipeline 200 and the outside, thereby facilitating the pulling out of the plugging member 120.
In some embodiments, the blocking member 120 is a pneumatic connector, which is used to install and remove the vacuum line 200, so as to seal the vacuum line 200 or exchange the vacuum line 200 with the outside air.
The embodiment also provides a method for checking the tightness of the vacuum pipeline 200, which comprises the following steps:
s10: the blocking member 120 closes one end of the vacuum line 200, and the sealing joint 114 of the detection line 110 is hermetically connected to the other end of the vacuum line 200.
S20: the evacuation device 130 evacuates the vacuum line 200 and measures the vacuum pressure of the vacuum line 200 on the vacuum gauge 140.
S30: the predetermined vacuum pressure of the pumping device 130 is compared with the vacuum pressure measured by the vacuum gauge 140 to measure the sealability of the vacuum line 200. Specifically, it is determined whether the vacuum pressure measured by the vacuum gauge 140 is equal to the preset vacuum pressure of the air-extracting device 130. If equal, the vacuum line 200 has good sealing properties.
S30: the plugging piece 120 is pulled out from the vacuum pipeline 200, the air pumping device 130 pumps the vacuum pipeline 200 to vacuum, and the preset vacuum pressure of the air pumping device 130 is compared with the vacuum pressure measured by the vacuum measuring instrument 140 to measure the patency of the vacuum pipeline 200. Specifically, it is determined whether the vacuum pressure measured by the vacuum measuring instrument 140 is less than the preset vacuum pressure of the air extractor 130, and if so, the smoothness of the vacuum pipeline 200 is good.
Fig. 4 is a schematic structural diagram of a second embodiment of the inspection tool of the present invention.
Referring to fig. 4, in the present embodiment, the inspection tool 100 includes a detection pipeline 110, a plugging member 120, an air extractor 130 connected to the detection pipeline 110, a vacuum measuring instrument 140, and a sealing valve 150.
The structures and the connection relations of the detection circuit 110, the air extractor 130 and the vacuum measuring instrument 140 refer to the structures and the connection relations of the corresponding components in the above embodiments, and are not described herein again.
In this embodiment, the blocking member 120 can be detachably connected to one end of the vacuum line 200 to be able to close the end of the vacuum line 200 and to be detachable from the vacuum line 200. The blocking member 120 may or may not be provided with a valve.
The sealing valve 150 is connected to the sensing line 110 and communicates with the sensing line 110. Specifically, the sealing valve 150 is connected to the first extension pipe 111 or the second extension pipe 112.
The sealing valve 150 communicates with the external space to enable selective release of external air into the vacuum line 200 for changing the sealed state of the vacuum line 200. After measuring the tightness of the vacuum line 200, the sealing valve 150 is opened so that air enters the vacuum line 200 from the sealing valve 150, and the pressure difference between the vacuum line 200 and the outside is equalized to facilitate the removal of the block piece 120 from the vacuum line 200.
Fig. 5 is a control structure diagram of a second embodiment of the inspection tool of the present invention.
In this implementation, the inspection tool 100 further includes a controller. The suction device 130, the vacuum gauge 140 and the sealing valve 150 are all electrically connected to the controller.
In this embodiment, the sealing valve 150 is an electromagnetic valve, and the controller controls the sealing valve 150 to open or close at corresponding times.
The air extractor 130 is controlled by the controller to automatically start or stop. The value of the vacuum pressure measured by the vacuum gauge 140 is sent to the controller, where the value of the vacuum pressure measured by the vacuum gauge 140 is automatically compared with the value of the vacuum pressure preset by the air extractor 130. So as to automatically judge the tightness and the patency of the vacuum pipeline 200.
While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (10)
1. The utility model provides a refrigerator vacuum line's inspection frock which characterized in that includes:
the detection pipeline is provided with a sealing joint at one end and can be detachably connected with one end of the vacuum pipeline in a sealing way;
the air extraction device is arranged at the other end of the detection pipeline;
the vacuum measuring instrument is connected to the detection pipeline, is communicated with the detection pipeline and is used for detecting the vacuum degree or pressure;
and the plugging piece can be detachably connected with the other end of the vacuum pipeline so as to close the end.
2. The inspection tool according to claim 1, wherein the sealing joint comprises a fixing part connected to one end of the detection pipeline and a clamping part protruding on one side of the fixing part, which is far away from the detection pipeline; a through hole is formed between the fixing part and the clamping part; the clamping part can extend into the vacuum pipeline and can be elastically pressed on the inner periphery of the vacuum pipeline; the fixing portion extends outward in the circumferential direction beyond the engaging portion.
3. The inspection tool of claim 1 further comprising a sealing valve for changing the sealing state of the vacuum line, the sealing valve being connected to and in communication with the detection line.
4. The inspection tool of claim 3 wherein said sealing valve is in communication with an ambient space to enable selective release of ambient air into said vacuum line.
5. The inspection tool of claim 3 further comprising a controller, wherein the suction device, the vacuum gauge and the sealing valve are electrically connected to the controller.
6. The inspection tool according to claim 1, wherein the detection pipeline comprises a first extension pipe, a three-way joint and a second extension pipe which are sequentially connected; the first extension pipe is used for being connected with the vacuum pipeline, and one end of the first extension pipe is connected with one interface of the three-way joint; one end of the second extension pipe is connected with the air exhaust device, and the other end of the second extension pipe is connected with one interface of the three-way joint; and the vacuum measuring instrument is connected with one interface of the three-way joint.
7. The inspection tool of claim 6, wherein the first extension tube and the second extension tube are both hoses.
8. The inspection tool according to claim 1, wherein a valve is arranged on the blocking piece, and the valve can open or close the vacuum pipeline so as to selectively release outside air into the vacuum pipeline.
9. The inspection tool of claim 8 wherein the block piece is a pneumatic fitting.
10. The inspection tool of claim 1, wherein the gas extraction device is a vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021467411.9U CN212721956U (en) | 2020-07-22 | 2020-07-22 | Inspection tool for refrigerator vacuum pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021467411.9U CN212721956U (en) | 2020-07-22 | 2020-07-22 | Inspection tool for refrigerator vacuum pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212721956U true CN212721956U (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021467411.9U Active CN212721956U (en) | 2020-07-22 | 2020-07-22 | Inspection tool for refrigerator vacuum pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212721956U (en) |
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2020
- 2020-07-22 CN CN202021467411.9U patent/CN212721956U/en active Active
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