KR102192385B1 - Compressor for ordinary temperature and low temperature and IOT-based monitoring system of this - Google Patents

Abstract

It relates to a compressor for room temperature and low temperature and an IOT-based monitoring system thereof, wherein a cylinder having a suction hole formed on the side of the compressor for room temperature and low temperature is combined with the cylinder, and responds to the suction hole to fill the refrigerant supplied through the refrigerant recovery port Compressor block in which the intake room is formed at the position, coupled to the inside of the cylinder, reciprocating inside the cylinder by the crank and connecting rod, and coupled to one side of the cylinder and the piston that opens or blocks the suction hole in the reciprocating process. It includes an exhaust unit through which the refrigerant compressed from the inside is discharged, and the exhaust unit is coupled to the cylinder head formed on one side of the compressor block and the cylinder, an exhaust valve installed on the cylinder head, and the cylinder head, and provides an exhaust space. The IOT-based monitoring system includes a compressor head, and the IOT-based monitoring system measures at least one of the pressure and temperature of the refrigerant embedded in the room temperature and low temperature compressor and the refrigerant sucked into the cylinder to create a first measurement value. 1 A sensor unit, a second sensor unit installed on one side of the compressor head, and a second sensor unit configured to measure at least one of the pressure and temperature of the compressed refrigerant compressed inside the cylinder and introduced into the exhaust space to create a second measurement value. A control unit that controls the driving unit to adjust the reciprocating speed of the piston according to at least one of the first measurement value and the second measurement value of the second sensor unit, and generates a monitoring signal for monitoring the operation state, and a monitoring signal generated by the control unit. It includes a communication unit that transmits to the outside and an external terminal that receives and outputs a monitoring signal from the communication unit.

Description

Compressor for ordinary temperature and low temperature and IOT-based monitoring system of this}

The present invention relates to a room-temperature and low-temperature compressor and an IOT-based monitoring system thereof, and in particular, to a room-temperature and low-temperature compressor and an IOT-based monitoring system thereof to enable intake and exhaust without using a valve plate.

An air conditioner (hereinafter referred to as "air conditioner") is used to control the temperature of a limited space such as a room, a vehicle, a refrigerator, and a freezer. These air conditioners generally acted as coolers to lower the temperature of the space.

However, in recent years, it is frequently used by changing the flow direction of the refrigerant or operating it in reverse to enable heating (or heating).

Such an air conditioner has a circulation structure for circulating a refrigerant, and heating or cooling is performed by heat exchange generated by compressing the refrigerant or expanding through an evaporator during the circulation process. To this end, the air conditioner includes a compressor for circulation and compression of refrigerant.

Various types of compressors are used, but among them, compressors in which a piston reciprocates in a cylinder to compress a refrigerant are widely used. In such a reciprocating compressor, an intake part and an exhaust part are provided in a cylinder head part, and a valve is provided in each of the intake part and the exhaust part. This valve is configured to be operated according to the rising or falling of the piston so that the low pressure refrigerant flows into the cylinder, or the compressed refrigerant inside the cylinder is discharged through the exhaust unit.

To this end, a valve plate including a valve is provided on the cylinder head, and valve plates for intake and exhaust are provided. However, such a valve plate has a problem that is frequently damaged due to frequent opening and closing operations, and in particular, when a liquid refrigerant is generated due to overcompression, damage to the valve plate and valve occurs due to an impact on the discharge side caused by the liquid refrigerant. have.

In particular, since such a valve plate must be produced by machining, the manufacturing cost is high, and the manufacturing process is complicated.

Republic of Korea Patent Publication No. 10-2000-0003148 (published on January 15, 2000) cooling structure of air conditioner compressor for vehicle

Therefore, the problem to be solved of the present invention is to solve the above problems, and by simplifying the structure by allowing intake and exhaust without using a valve plate, it is possible to manufacture at low cost and improve the durability of the compressor. It is to provide a compressor for room temperature and low temperature.

Another problem to be solved of the present invention is to provide an IOT-based monitoring system capable of monitoring room temperature and low temperature compressors.

In order to achieve the above-described problems, the compressor for room temperature and low temperature according to the present invention comprises: a cylinder having a suction hole formed on a side thereof; A compressor block having an intake room formed at a position corresponding to the suction hole so that the cylinder is coupled and the refrigerant supplied through the refrigerant recovery port is filled; A piston coupled to the inside of the cylinder, reciprocating within the cylinder by a crank and a connecting rod, and opening or blocking the suction hole during a reciprocating process; And an exhaust part coupled to one side of the cylinder and through which the refrigerant compressed inside the cylinder is discharged, wherein the exhaust part includes a cylinder head formed on one side of the compressor block and the cylinder; An exhaust valve installed above the cylinder head; And a compressor head coupled to the cylinder head and providing an exhaust space.

In addition, the IOT-based monitoring system according to the present invention is a cylinder in which suction holes are formed on the side; A compressor block having an intake room formed at a position corresponding to the suction hole so that the cylinder is coupled and the refrigerant supplied through the refrigerant recovery port is filled; A piston coupled to the inside of the cylinder, reciprocating within the cylinder by a driving unit including a crank and a connecting rod, and opening or blocking the suction hole during a reciprocating process; And an exhaust part coupled to one side of the cylinder and discharging the refrigerant compressed inside the cylinder, wherein the exhaust part comprises a cylinder head formed on one side of the compressor block and the cylinder; An exhaust valve installed above the cylinder head; And a compressor head that is coupled to the cylinder head and provides an exhaust space, and is built in the intake room and configured to measure at least one of a pressure and temperature of the refrigerant sucked into the cylinder to create a first measured value. A first sensor unit; A second sensor unit installed on one side of the compressor head and configured to measure at least one of a pressure and temperature of a compressed refrigerant compressed inside the cylinder and introduced into the exhaust space to generate a second measured value; And controlling the driving unit to adjust the reciprocating speed of the piston according to at least one of a first measurement value of the first sensor unit and a second measurement value of the second sensor unit, and generating a monitoring signal for monitoring an operating state. Control unit; A communication unit that transmits a monitoring signal generated by the control unit to the outside; And an external terminal receiving and outputting the monitoring signal from the communication unit.

As described above, according to the compressor for room temperature and low temperature according to the present invention, by simplifying the structure by allowing intake and exhaust without using a valve plate, it is possible to manufacture at low cost and to improve the durability of the compressor. .

In addition, according to the compressor for room temperature and low temperature according to the present invention, the refrigerant or liquid refrigerant having a high pressure can be discharged by simplifying the structure, so that the discharge effect can be improved.

In addition, according to the IOT-based monitoring system according to the present invention, it is possible to monitor the condition of the compressor for room temperature and low temperature through an external terminal, so that it is possible to diagnose and process faults in real time.

1 is an exemplary diagram showing a schematic form of a room temperature and low temperature compressor and a room temperature and low temperature compressor constituting an IOT-based monitoring system thereof according to the present invention.
2 is a side view showing some components partially omitted to confirm the main components.
3 is a side perspective view showing some components partially omitted to confirm the main components.
4 is an exploded perspective view of an exhaust unit shown in FIG. 1.
5 is a bottom view of the exhaust valve shown in FIG. 4.
6 is a block diagram of an IOT-based monitoring system constituting an IOT-based monitoring system of the compressor for room temperature and low temperature according to the present invention.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the implementation of the present invention, reference should be made to the accompanying drawings for explaining exemplary embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, and in the description with reference to the accompanying drawings, the same or corresponding components are given the same reference numbers, and redundant descriptions thereof will be omitted. do.

Prior to describing the present invention, room temperature used in the present specification may mean 15 to 70 degrees. Further, the low temperature may mean a temperature lower than the room temperature.

1 is an exemplary diagram showing a schematic form of a room temperature and low temperature compressor and a room temperature and low temperature compressor constituting an IOT-based monitoring system thereof according to the present invention.

Referring to FIG. 1, the compressor for room temperature and low temperature according to the present invention is a compressor used at room temperature and low temperature, and a compression part constituted by a cylinder 40 and a piston 60 is provided in the compressor body 1, and circulation An exhaust unit 100 and an intake unit 50 for intake and exhaust of the refrigerant are provided.

Specifically, the compressor may include a compressor body 1 and a compressor block 10. In this case, the compressor body 1 and the compressor block 10 may be integrally formed, but will be described separately for convenience of description.

Although not shown in detail in the drawings, the compressor body 1 is provided with a driving unit 2 (refer to FIG. 6) for driving the compression unit. The driving unit 2 may include a power source such as a motor (not shown), a crank 3 connected to the shaft of the power source to rotate, and a connecting rod 5 connecting the crank 3 and the piston 60. The driving part 2, the crank 3, and the connecting rod 5 serve to reciprocate the piston 60 inside the cylinder 40 by using power supplied by a power source as known.

The compression unit includes a configuration of a discharge unit that operates by the driving unit 2 to suck and compress the refrigerant, and discharge the compressed refrigerant to the refrigerant circulation pipe. That is, the compression unit may be understood as a term including the cylinder 40, the piston 60, and the exhaust unit 100.

The compressor block 10 is provided with components for circulating the refrigerant along the refrigerant circulation path and sucking and compressing the refrigerant. Specifically, the compressor block 10 is provided with a cylinder 40, a piston 60, an intake part 50, and an exhaust part 100.

The intake part 50 is provided to supply the refrigerant circulated along the circulation path to the cylinder 40. To this end, the intake part 50 is formed in the compressor block 10 around the cylinder 40, and includes a refrigerant recovery port 52 and an intake room 54.

The refrigerant recovery port 52 is formed in the compressor block 10 to communicate the intake room 54 with the outside of the compressor block 10. The refrigerant recovery port 52 may be formed to protrude from the outer surface of the compressor block 10 for connection with a refrigerant circulation pipe (not shown).

The intake room 54 serves to temporarily retain the refrigerant recovered through the refrigerant recovery port 52 so that refrigerant can be easily sucked into the cylinder 40. To this end, the intake room 54 is formed in the compressor block 10 and is formed to surround the side surface of the cylinder 40. When a plurality of cylinders 40 are provided, the intake room 54 may be provided for each cylinder 40. In this case, a through hole (not shown) for communication may be formed in the compressor block 10 so as to connect the intake rooms 54 provided in each of the plurality of cylinders 40.

The exhaust part 100 is provided to supply the refrigerant compressed by the cylinder 40 and the piston 60 to the refrigerant circulation pipe. The exhaust part 100 may be provided at an extension line of the piston 60 in the reciprocating direction, that is, at one end of the cylinder 40. On the other side of the cylinder 40, a connecting rod 5 and a crank 3 for moving the piston 60 are disposed as shown.

The exhaust part 100 is disposed at a position facing the cylinder 40 with the cylinder head 110 interposed therebetween. In addition, the exhaust part 100 is connected to a high-pressure part of the refrigerant circulation pipe. That is, the exhaust unit 100 may be connected to the condenser through a refrigerant circulation pipe.

The exhaust unit 100 is installed inside the compressor head 130 and the cylinder head 110 for fixing the cylinder 40 to the compressor block 10 and the compressor head 130 providing an exhaust space 131 It may be configured to include an exhaust valve 120.

The compressor head 130 is coupled to the cylinder head 110 or the compressor block 10 and forms an exhaust space 131 that is an empty space therein. A refrigerant outlet (not shown) similar to the refrigerant recovery port 52 may be formed in the exhaust space 131, and connected to the refrigerant circulation pipe through the refrigerant outlet.

On the other hand, the detailed configuration of the exhaust unit 100 will be described in detail with reference to other drawings.

2 and 3 are enlarged exemplary views of a cylinder and a piston part in FIG. 1, and FIG. 2 is a side view partially omitted and displayed in order to confirm the main configuration, and FIG. 3 is a side perspective view.

2 and 3, in the compressor for room temperature and low temperature of the present invention, the circulated refrigerant, that is, the refrigerant requiring compression is sucked into the cylinder 40 through the side of the cylinder 40, and the compressed refrigerant is a cylinder It is discharged through the exhaust part 100 provided at one end of the 40.

In more detail, the cylinder 40 may be coupled to the compressor block 10 in a replaceable form as shown. That is, a space in which the cylinder 40 is to be inserted is formed in the compressor block 10 and may be configured by inserting and combining the separately manufactured cylinder 40.

The cylinder 40 is provided with a suction hole 56 so that intake of the refrigerant is performed. Here, at least one suction hole 56 is formed to pass through the side surface of the cylinder 40 and is provided at a position corresponding to the intake room 54. The suction hole 56 is closed or opened by the piston 60, and when opened, the refrigerant is sucked into the cylinder 40. To this end, the cylinder 40 is manufactured in a cylindrical pipe shape.

Meanwhile, the piston 60 is coupled to the inside of the cylinder 40.

The piston 60 reciprocates within the cylinder 40 to compress the refrigerant sucked into the cylinder 40 and discharges the compressed refrigerant to the exhaust unit 100. To this end, as described above, the piston 60 is connected to a power source, that is, a drive unit 2 (refer to FIG. 6) by the crank 3 and the connecting rod 5, and reciprocates inside the cylinder 40.

In addition to compressing the refrigerant, the piston 60 serves as a suction valve that sucks the refrigerant. To this end, the piston 60 is formed in a multi-stage shape with different diameters, and a valve portion 70 is provided on the upper surface.

Specifically, the piston 60 is formed in a cup shape so that the upper surface corresponding to the bottom surface of the cup faces the exhaust part 100. In the inner space of the piston 60, a coupling portion for connection with the connecting rod 5 is provided.

The outer periphery of the piston 60 is configured to include a plurality of stages 61, 62 and 64 having different diameters. The first end 61 is provided in close contact with the inner wall of the cylinder 40 to secure airtightness. That is, the outer diameter of the first stage 61 is formed equal to the inner diameter of the cylinder 40. This first stage 61 prevents external air from being sucked or refrigerant leaking into the space provided between the cylinder 40 and the piston 60 during compression or intake, so that the pressure is maintained at an appropriate pressure for compression or intake. do.

The second end 62 is provided to have a smaller diameter than the first end 61. That is, the second end 62 is provided to form a space between the inner wall of the cylinder 40. This second stage 62 forms a path through which the refrigerant flows by connecting the inner space of the cylinder 40 and the suction hole 56 when the piston 60 descends (moves in the crank direction) inside the cylinder 40. do.

To this end, the second end 62 may be formed in an annular shape along the circumference of the piston 40, and may be limitedly formed only at a position corresponding to the suction hole 56. That is, if it is limitedly formed only at a position corresponding to the suction hole 56, the second end 62 may be provided by being processed in a groove shape on the surface of the piston 60.

The second stage 62 may be formed to be inclined so that the distance from the cylinder 40 increases toward the upper surface of the cylinder 40, that is, the upper surface of the piston 60. In addition, such an inclination can be formed as a smooth curved surface. Through this, it is possible to smoothly move the refrigerant by allowing the inflow space 65 formed by the ventilation hole 63 and the second end 62 to be connected. In addition, it is possible to minimize the amount of refrigerant flowing out through the suction hole 56 when the valve unit 70 is operated.

The third end 64 is formed at a position adjacent to the upper surface 66 of the piston 60. In the drawing, the third end 64 is shown to be formed by extending from the upper edge of the piston 60 to the lower side, but may be formed on the side by being spaced apart from the upper edge. However, in the following description, for convenience of description, it is assumed that it is formed with a constant width from the edge to the side.

A ventilation hole 63 is formed in the third end 64. The ventilation hole 63 is formed in the third end 64 to connect the inflow space 65 formed by the second end 62 and the inner space of the cylinder 40. The ventilation hole 63 is provided by forming a hole between the outer surface and the inner surface of the third end 64, and one end of the ventilation hole 63 is formed on the upper surface 66 of the piston 60. By forming the ventilation hole 63 between the outer surface and the inner surface of the third end 64, the outer surface of the third end 64 comes in close contact with the inner surface of the cylinder 40, so that the piston 60 vibrates during the reciprocating motion. Can be prevented from occurring.

Meanwhile, the valve portion 70 is coupled to the upper surface 66 of the piston 60. The valve part 70 may be coupled to the upper surface 66 of the piston 60 by a coupling member 75 disposed inside the piston 60 and penetrating the upper surface 66.

The valve unit 70 is driven according to a pressure change in the cylinder 40, which changes by raising or lowering the piston 60 to open or close the suction hole 56. Specifically, in the valve part 70, when the piston 60 descends, the pressure inside the cylinder 40 is lowered, and the second end 62 is disposed at a position corresponding to the suction hole 56, the ventilation hole 63 Open to allow the refrigerant to flow into the cylinder (40). In addition, when the refrigerant is sucked and the piston 60 is raised, the ventilation hole 63 is blocked to prevent the refrigerant from being discharged from the outside and the pressure inside the cylinder 40 from being lowered.

To this end, the valve part 70 is configured to include a valve body 71 and a valve piece part 72.

The valve body 71 allows the valve portion 70 to be coupled to the piston 60 and the valve piece portion 72 is movably coupled. The valve body 71 is formed in a circular plate shape, and a protrusion 72 is formed at an upper edge. This protrusion serves as a stopper that restricts the movement of the valve piece 72 and prevents the valve piece 72 from rising more than necessary and from being separated from the valve body 71. In addition, the valve body 71 serves as a shaft for lifting and lowering the valve piece 72 when the valve piece 72 is raised or lowered to open and close the ventilation hole 63. To this end, the outer surface shape of the valve body 71 may be formed in a form in which the valve piece portion 72 is easily fitted, and for example, may be formed in an elliptical shape.

The valve piece portion 72 is coupled to the valve body 71 and performs limited lifting or lowering with the valve body 71 as an axis. Through this, the valve piece part 72 blocks the ventilation hole 63 when descending and opens the ventilation hole 63 when rising to allow the refrigerant to flow into the cylinder 40. To this end, the valve piece portion 72 may be formed of a metal piece to facilitate opening and closing of the ventilation hole 63, and may be formed in a ring (or washer ring) shape having a flat and constant width.

At this time, the outer diameter of the valve piece 72 is formed smaller than the inner diameter of the cylinder 40 so that the refrigerant introduced through the gap formed between the valve piece 72 and the inner surface of the cylinder 40 moves into the cylinder 40 It is preferable to do this, but the present invention is not limited only by the proposed method as being able to form a flow path of the refrigerant by processing the shape of the valve piece 72.

4 is an exploded perspective view of the exhaust part shown in FIG. 1, and FIG. 5 is a bottom view of the exhaust valve shown in FIG. 4.

The exhaust unit will be described in detail with reference to FIGS. 4 and 5.

Referring to FIG. 4, as described above, the cylinder 40 in which the piston 60 is provided is provided with an exhaust part 100 at the top. Specifically, the exhaust unit 100 is provided on the compressor block 10 and one end of the cylinder 40, which is an upper portion.

The exhaust unit 100 may include a cylinder head 110, an exhaust valve 120, and a compressor head 130. At this time, since the compressor head 130 has been described with reference to FIG. 1, it will not be described separately.

The cylinder head 110 is coupled to an upper end of the compressor block 10 and the cylinder 40. That is, the cylinder head 110 is coupled between the compressor block 10 and the cylinder 40 and the exhaust valve 120.

This cylinder head 110 fixes the cylinder 40 to the compressor block 10 and forms a compression space 41 by configuring one side of the cylinder 40, and serves to discharge the compressed refrigerant. . To this end, the cylinder head 110 has a donut-shaped groove 111 (donut-shaped groove) formed by being depressed at predetermined intervals from the top to the bottom. In addition, although not shown in detail in the drawings, as can be seen with reference to other drawings, a discharge hole 112 is formed in the donut-shaped groove 111. At this time, it is preferable that the donut-shaped groove 111 is recessed at an interval in which the valve piece 121 and the buffer member 122, which will be described later, can be smoothly seated.

In addition, a plurality of first fastening holes 113 are formed around the donut-shaped groove 111 formed in the cylinder head 110.

At this time, it is preferable that the plurality of first fastening holes 113 are formed according to the number and shape of the pressing members 124 to be described later. In addition, the plurality of first fastening holes 113 must be formed according to the shape and number of the plurality of second fastening holes 123a formed in the valve plate 123 to be described later, and must be disposed at corresponding positions.

In other words, the plurality of first fastening holes 113 are formed to correspond to the shape, size, and number of the plurality of second fastening holes 123a and the pressing member 124.

On the other hand, the cylinder head 110 is provided with an exhaust valve 120 on the other side facing the cylinder 40, that is, in the exhaust space 131.

The exhaust valve 120 is installed on the cylinder head 110, and when the refrigerant sucked through the intake unit 50 is compressed and discharged in the cylinder 40, the donut-shaped groove 111 and the discharge hole 112 It is disposed at a position corresponding to the inlet of the compressed refrigerant, and as shown in the drawing, it includes a valve piece 121, a buffer member 122, a valve plate 123, and a pressure member 124. .

As the valve piece 121 is seated in the donut-shaped groove 111 and the refrigerant compressed from the compression space 41 provided with the cylinder 40 is discharged, the guide portion 123c formed under the valve plate 123 It flows up and down along the inner wall of The valve piece 121 may be formed in a ring (or washer ring) shape having a flat and constant width having a diameter corresponding to the donut-shaped groove 111. In addition, the valve piece 121 is formed larger than the inner diameter of the through portion 123b formed through the center of the valve plate 123, but may have a diameter that is not separated by the inner wall of the guide portion 123c.

The buffer member 122 is coupled to the upper surface of the valve piece 121 and serves to buffer the impact of the valve piece 121. Specifically, the buffer member 122 serves to prevent damage by buffering the impact of the valve piece 121 when it collides with the lower surface of the valve plate 123 as the valve piece 121 flows up and down. . The buffer member 122 may be made of, for example, a member of synthetic resin and rubber, and is formed in a shape corresponding to the shape of the valve piece 121 and is coupled to the upper surface of the valve piece 121.

In this case, it has been described that the buffer member 122 is coupled to the upper surface of the valve piece 121, but is not limited thereto. That is, the buffer member 122 is not separated according to the guide portion 123c configured in the lower portion of the valve plate 123, so it is seated without being coupled to the upper surface of the valve piece 121 to relieve the impact of the valve piece 121 can do.

The valve plate 123 is formed in a donut shape having a through portion 123b through which the center is formed, and a plurality of second fastening holes 123a having a size corresponding to the first fastening hole 113 are formed on the upper surface. , It is coupled to the cylinder head 110 by the pressing member 124.

At this time, the valve plate 123 is coupled to the cylinder head 110 as the pressing member 124 communicates and connects the plurality of second fastening holes 123a and the plurality of first fastening holes 113 As the penetration is formed, the compressed refrigerant introduced through the discharge hole 112 may be discharged into the exhaust space 131.

In addition, referring to FIG. 5, the valve plate 123 protrudes from a surface facing the cylinder head 110 and is formed in plural, and a guide part 123c is provided that is spaced apart from each other to form an opening part 123d. .

The opening 123d formed in the lower portion of the valve plate 123 allows the refrigerant introduced through the discharge hole 112 to be discharged into the exhaust space 131, as in the role of the through part 123b. The opening part 123d may vary according to the shape of the guide part 123c.

In addition, the guide portion 123c protruding from the lower portion of the valve plate 123 and formed in plural serves to guide the valve piece 121 and the buffer member 122 as described above. The inner wall of the guide part 123c is preferably formed to be curved in a shape corresponding to the outer diameters of the valve piece 121 and the buffer member 122. The guide part 123c is divided for convenience of description, and is preferably formed integrally with the valve plate 123.

The pressurizing member 124 serves to prevent separation of the valve plate 123 when the refrigerant is pressurized to a predetermined pressure or higher by pressing in the direction of the discharge hole 112. To this end, the pressing member 124 may be configured to include an elastic body such as a spring and a pin or a shaft for fixing the elastic body to be contracted and relaxed. The pressing member 124 may be further provided as needed, and when the pressing member 124 is further provided, the number of the first fastening holes 113 and the second fastening holes 123a should also be changed.

When the refrigerant compressed in the compression space 41 flows into a gas state through the discharge hole 112, the exhaust valve 120 configured as described above is the valve piece 121 and the buffer member 122 by pressure. The compressed refrigerant flows up and down along the inner wall of the guide part 123c, and the compressed refrigerant introduced into the valve plate 123 is discharged to the exhaust space 131 through the opening part 123d.

However, the refrigerant compressed in the compression space 41 may be condensed and introduced into the exhaust valve 120 in a liquid state, or may be introduced into the exhaust valve 120 at a high pressure even in a gaseous state. In this case, the valve piece 121 and the buffer member 122 flow up and down, and the valve plate 123 also flows up and down. As a result, the inner space of the valve plate 123 is enlarged, and as the inner space is enlarged, the liquid refrigerant or the overpressure compressed refrigerant can be smoothly discharged to the exhaust space 131.

On the other hand, the spring of the pressing member 124 serves to assist the valve plate 123 when the valve plate 123 flows up and down.

Accordingly, the compressor for room temperature and low temperature according to the present invention has the advantage of being able to smoothly discharge even the refrigerant compressed in the compression space 41 is a liquid refrigerant or a refrigerant discharged at a high pressure. Accordingly, by simplifying the structure by allowing intake and exhaust without using an existing valve plate, it is possible to manufacture at low cost and improve the durability of the compressor.

6 is a block diagram of an IOT-based monitoring system constituting an IOT-based monitoring system of the compressor for room temperature and low temperature according to the present invention.

In describing the IOT-based monitoring system of the present invention, a detailed description of the same configuration as the above-described room temperature and low temperature compressor will be omitted.

6, an IOT-based room temperature and low temperature compressor and monitoring system are disclosed.

1 and 6, the IOT-based monitoring system according to the present invention includes a first sensor unit 200, a second sensor unit 210, a control unit 220, a communication unit 230, and an external terminal 240. It may include.

The first sensor unit 200 is built in the intake room 54 and measures at least one of the pressure and temperature of the refrigerant sucked into the cylinder 40 to generate a first measured value. When the refrigerant recovered through the refrigerant recovery port 52 is supplied to the cylinder 40, the first sensor unit 200 includes a pressure sensor for measuring the pressure of the refrigerant supplied to the cylinder 40 and the refrigerant. It may be made of at least one of the temperature sensors for measuring the temperature. Then, the created first measurement value is transmitted to the control unit 220.

Meanwhile, in FIG. 1, it is shown that the first sensor unit 200 is embedded in the intake room 54, but this is only an example for convenience of explanation, and at least one of the pressure and temperature of the refrigerant supplied to the cylinder 40 As long as it is a location for measuring one efficiently, it does not matter where it is installed.

The second sensor unit 210 is installed on one side of the compressor head 130, and when the refrigerant compressed in the cylinder 40 flows into the exhaust space 131, the compressed refrigerant introduced into the exhaust space 131 Measure at least one of pressure and temperature to make a second measurement. The second sensor unit 200 may be formed of at least one of a pressure sensor for sensing the pressure of the compressed refrigerant introduced into the exhaust space 131 and a temperature sensor for sensing the temperature of the compressed refrigerant. Here, the second sensor unit 200 may be installed in a form attached or fixed to the inner upper surface of the compressor head 130 as shown in FIG. 1.

At this time, the pressure sensor and the temperature sensing sensor constituting the second sensor unit 210 may be formed in a plate shape, or may be installed in various ways, such as by digging a groove on the inner upper surface of the compressor head 130. However, this is only an example for explanation, and is not limited thereto.

In addition, the second sensor unit 210 transmits the prepared second measurement value to the control unit 220.

Meanwhile, in the drawings, the second sensor unit 210 is shown as being installed on the inner upper surface of the compressor head 130, but this is only an example for convenience of description, and the exhaust space 131 is transferred to the exhaust space 131 through the exhaust valve 120. Any location does not matter if it is a location for efficiently measuring at least one of the pressure and temperature of the introduced compressed refrigerant.

The control unit 220 controls the driving unit 2 to adjust the reciprocating speed of the piston 60 according to at least one of a first measurement value of the first sensor unit 200 and a second measurement value of the second sensor unit 210. Control. That is, the control unit 220 controls the rotational speed of the driving unit 2, which is a power source such as a motor, according to at least one of the first measurement value and the second measurement value. Although not shown in FIG. 1, the control unit 220 may be attached or embedded in the compressor body 1.

The controller 220 compares at least one of a first reference value and a second reference value stored in advance in order to control the driving unit 2 according to at least one of the first measurement value and the second measurement value. Here, the first reference value stored in advance may be defined as a reference value or a comparison value for measuring at least one of the pressure and temperature of the refrigerant sucked into the cylinder 40. In addition, the second reference value stored in advance may be defined as a reference value or a comparison value for measuring at least one of the pressure and temperature of the compressed refrigerant introduced into the exhaust space 131.

Accordingly, the controller 220 may control the driving unit 2 after comparing at least one of the first measurement value and the second measurement value with at least one of the first reference value and the second reference value stored in advance.

Meanwhile, the first reference value and the second reference value stored in advance may be stored in a storage unit (not shown), and such a storage unit may be included in the control unit 220.

On the other hand, the control unit 220 not only controls the reciprocating speed of the piston 60 through the driving unit 2, but also when a valve (not shown) is provided in each of the refrigerant circulation pipe and the refrigerant outlet, the first measured value and The opening/closing operation of each valve (not shown) may be controlled according to at least one of the second measured values. That is, the controller 220 may control at least one of a discharge amount of the refrigerant supplied to the cylinder 40 and a discharge amount of the compressed refrigerant discharged from the exhaust space 131 to the refrigerant outlet by controlling the opening and closing operation of each valve.

In addition, it is preferable that the control unit 220 generates a monitoring signal including the rotational speed of the driving unit 2 and the opening/closing operation state of each valve. To this end, it is preferable that the control unit 220 generates a monitoring signal through at least one of the pressure, temperature, and flow rate of the intake room 54 or the exhaust space 131.

Meanwhile, the compressor for room temperature and low temperature according to the present invention can be monitored through the external terminal 240 at a remote location. To this end, the compressor for room temperature and low temperature according to the present invention may include a communication unit 230. The communication unit 230 may be provided in the form of being embedded or attached to the compressor body 1.

The communication unit 230 serves to transmit a monitoring signal generated by the control unit 220 to the external terminal 240. The communication unit 230 may utilize at least one of Bluetooth and WiFi, which are short-range communication modules, to transmit the monitoring signal generated by the controller 220 to the external terminal 240. However, this is only an example, and various short-range communication modules such as LoRa and Zigbee can be applied.

Meanwhile, since Bluetooth, Wi-Fi, LoRa, and ZigBee, which are short-range communication modules, are commonly used technologies, detailed descriptions will be omitted.

The external terminal 240 may output the monitoring signal received from the communication unit 230 in various forms such as graphs, images, and sounds. The external terminal 240 may be configured to include a mobile terminal such as a smart phone or a tablet or a PC.

Accordingly, the IOT-based monitoring system according to the present invention can monitor the state of the compressor for room temperature and low temperature using the communication unit 230 and the external terminal 240. That is, the state of the discharge amount of the refrigerant supplied to the cylinder 40 and the discharge amount of the compressed refrigerant discharged from the exhaust space 131 to the refrigerant discharge port can be easily checked through the external terminal 240.

Although the invention made by the present inventor has been described in detail according to the above embodiment, the invention is not limited to the above embodiment, and it goes without saying that the invention can be changed in various ways without departing from the gist.

1: compressor body 3: connecting rod
5: crank 10: compressor block
40: cylinder 50: intake part
60: piston 70: valve part
100: exhaust unit 110: cylinder head
120: exhaust valve 121: valve piece
122: buffer member 123: valve plate
124: pressing member 130: compressor head
200: first sensor unit 210: second sensor unit
220: control unit 230: communication unit
240: external terminal

Claims (5)

A cylinder in which a suction hole is formed on a side surface;
A compressor block having an intake room formed at a position corresponding to the suction hole so that the cylinder is coupled and the refrigerant supplied through the refrigerant recovery port is filled;
A piston coupled to the inside of the cylinder, reciprocating within the cylinder by a driving unit including a crank and a connecting rod, and opening or blocking the suction hole during a reciprocating process; And
An exhaust part coupled to one side of the cylinder, which is an extension line in the reciprocating direction of the piston, and discharges the refrigerant compressed inside the cylinder,
The exhaust unit,
A cylinder head formed on one side of the compressor block and the cylinder;
An exhaust valve installed above the cylinder head; And
A compressor for room temperature and low temperature, characterized in that it comprises a compressor head coupled to the cylinder head and providing an exhaust space. In claim 1, the cylinder head,
A compressor for room temperature and low temperature, characterized in that a plurality of donut-shaped grooves (hereinafter, donut-shaped grooves) formed by being recessed from the top to the bottom at regular intervals are provided. In claim 2, in the corresponding position of each of the donut-shaped groove,
A discharge hole for discharging the compressed refrigerant inside the cylinder is formed,
Around the plurality of donut-shaped grooves,
Room temperature and low temperature compressor, characterized in that a plurality of first fastening holes are formed. In claim 3, the exhaust valve,
A valve piece seated in the donut-shaped groove;
A buffer member coupled to the upper surface of the valve piece;
A valve plate having a plurality of second fastening holes having a size corresponding to the plurality of first fastening holes formed on an upper surface, and coupled to the cylinder head; And
And a pressing member coupled to the plurality of first and second fastening holes so as to couple the valve plate to the cylinder head,
The valve piece and the buffer member,
It is formed to a size corresponding to the donut-shaped groove, is formed larger than the inner diameter of the through portion formed through the center of the valve plate,
The valve plate,
Compressor for room temperature and low temperature, characterized in that it includes a guide portion protruding from a surface facing the cylinder head to form a plurality, and spaced apart from each other to form an opening. A cylinder in which a suction hole is formed on a side surface;
A compressor block having an intake room formed at a position corresponding to the suction hole so that the cylinder is coupled and the refrigerant supplied through the refrigerant recovery port is filled;
A piston coupled to the inside of the cylinder, reciprocating within the cylinder by a driving unit including a crank and a connecting rod, and opening or blocking the suction hole during a reciprocating process; And
An exhaust part coupled to one side of the cylinder, which is an extension line in the reciprocating direction of the piston, and discharges the refrigerant compressed inside the cylinder,
The exhaust unit,
A cylinder head formed on one side of the compressor block and the cylinder;
An exhaust valve installed above the cylinder head; And
And a compressor head coupled to the cylinder head and providing an exhaust space,
A first sensor unit built in the intake room and configured to measure at least one of a pressure and a temperature of the refrigerant sucked into the cylinder to generate a first measured value;
A second sensor unit installed on one side of the compressor head and configured to measure at least one of a pressure and temperature of a compressed refrigerant compressed inside the cylinder and introduced into the exhaust space to generate a second measured value; And
A control unit for controlling the driving unit to adjust the reciprocating speed of the piston according to at least one of a first measurement value of the first sensor unit and a second measurement value of the second sensor unit, and generating a monitoring signal for monitoring an operation state ;
A communication unit that transmits a monitoring signal generated by the control unit to the outside; And
IOT-based monitoring system, characterized in that it further comprises an external terminal to receive and output the monitoring signal from the communication unit.

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