Cooling system utilizing environmental characteristic

Abstract

To provide a cooling system which intensively cools an area directly below a spindle unit and so on of a machine tool, that is, utilizes environmental characteristic in a factory paying attention to an air layer in the factory stable in the state that a temperature is relatively low.SOLUTION: A cooling system 10 utilizing environmental characteristic is configured from a machine tool bed upper part 30 (forming a first space part) which exists directly below a spindle unit, and a machine tool bed lower part 50 (forming a second space part) which is stable in the state that a temperature in a factory is relatively low and faces a ground surface. The cooling system comprises: an air suction fan 60 which is installed on a side face wall of the machine tool bed upper part 30 (forming the first space part) directly below the spindle unit; a tabular air flow control member 70 which is so installed as to extend downward from a ceiling of the machine tool bed lower part 50 (forming the second space part); and an air intake port 80 which is installed on the machine tool bed lower part 50 (forming the second space part).SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a cooling system that utilizes a stable air layer in a factory where the temperature is relatively low to cool a machine tool, that is, that utilizes the environmental characteristics of the factory. [Background technology]

[0002] It is known that the underground parts of buildings (below ground level) are affected by underground temperatures and environmental conditions. Underground temperatures are usually relatively stable with little seasonal fluctuation, and because they are located deeper than the surface, they act as a buffer against sudden temperature fluctuations. Underground soil and bedrock have the ability to store heat (thermal capacity), and this thermal capacity allows the underground to absorb or release heat, acting as a buffer against temperature fluctuations within factories and other buildings, thereby contributing to the stability of temperatures within factories and other buildings. In short, when factories and other buildings have thermal capacity underground, the (little or stable) temperature fluctuations within the underground also affect temperature fluctuations within the factory and other buildings.

[0003] The temperature underground is relatively stable despite seasonal and other temperature changes. For example, basements are usually located underground, and because the temperature underground is relatively low and stable, they are suitable for storing food. Furthermore, basements can be used in place of refrigerators or freezers. (Underground) wine cellars, where temperature stability is extremely important, provide an ideal environment for storing and aging wine, and the stable temperature underground is also advantageous for storing agricultural products and vegetables. The applicants noticed that the air layer located a short distance from the ground (i.e., near the ground) in a factory, which is susceptible to the effects of underground temperatures, has a relatively low and stable temperature. They conducted extensive research and development to utilize this temperature stability (in the low temperature range) for cooling machine tools, and as a result, they arrived at the present invention.

[0004] Patent Document 1 discloses a housing structure (Patent Document 1: Title of the Invention) that aims to "effectively lower the temperature in the living space by utilizing the air in the underfloor space," and describes it as "a housing structure that includes an underfloor space surrounded by an insulated foundation, a first floor floor supported by the foundation, and a dirt floor located below the floor, and a living space above the underfloor space, the housing including a foundation ventilation opening for introducing outside air into the underfloor space, a partition located on the dirt floor side of the underfloor space and for forming a dirt floor-side space through which air can pass between the underfloor space and the dirt floor, and a supply means for supplying air that has exchanged heat with the surface of the dirt floor by passing through the dirt floor-side space to the living space." [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-224485 Summary of the Invention [Problem to be solved by the invention]

[0006] The structure of the house disclosed in Patent Document 1 (Patent Document 1: Title of the Invention) exchanges heat with the air in the underfloor space near the surface of the earthen floor in summer, and the heat-exchanged air is supplied to the living space, thereby effectively lowering the temperature in the living space. However, the structure of the house disclosed in Patent Document 1 (Patent Document 1: Title of the Invention) is unable to provide concentrated cooling to a specific point that needs to be cooled, such as directly below the spindle unit of a machine tool.

[0007] The object of the present invention is to provide a cooling system that focuses on the stable air layer in factories where temperatures are relatively low, and that intensively cools areas directly below the spindle unit of a machine tool, i.e., that utilizes the environmental characteristics of factories. [Means for solving the problem]

[0008] In order to solve the above problem, the invention described in claim 1 is a cooling system that utilizes the air layer near the ground in a factory where the temperature is relatively low and stable, for cooling machine tools, that is, a cooling system that utilizes the environmental characteristics of a factory, It consists of an upper part of the machine tool bed (forming the first space) located directly below the spindle unit, and a lower part of the machine tool bed (forming the second space) facing the stable ground where the temperature in the factory is relatively low. an intake fan installed above the machine tool bed; a plate-shaped airflow control member installed so as to extend downward from the ceiling below the machine tool bed; The cooling system is characterized by utilizing environmental characteristics and having an air intake port installed under the machine tool bed.

[0009] The invention described in claim 2 is characterized in that, in the invention described in claim 1, the plate-shaped air flow control member is a cooling system that utilizes environmental characteristics, extending downward from the ceiling below the machine tool bed to a height of 50% to 30% of the height of the bottom of the machine tool bed.

[0010] The invention described in claim 3 is the invention described in claim 1 or claim 2, characterized in that the cooling system utilizes environmental characteristics in that the air intake port installed under the machine tool bed is installed so as to be located lower than the tip end of the extending plate-shaped air flow control member. [Effects of the Invention]

[0011] The cooling system utilizing environmental characteristics according to the present invention utilizes the air layer near the ground, where temperatures in a factory are relatively low and stable, to cool the machine tool; that is, it is a cooling system utilizing the environmental characteristics of a factory. Even if the ambient temperature drops below the ground surface temperature, the air layer near the ground is kept at a stable temperature, mitigating the temperature drop through heat exchange with the ground. The cooling system utilizing environmental characteristics is composed of an upper part of the machine tool bed located directly below the spindle unit (forming a first space), and a lower part of the machine tool bed (forming a second space) facing the ground, where temperatures in the factory are relatively low and stable.

[0012] The upper part of the machine tool bed, which forms the first space, is equipped with an intake fan, and the lower part of the machine tool bed, which forms the second space, is characterized by having a plate-shaped air flow control member installed so as to extend downward from the ceiling of the lower part of the machine tool bed, and an air intake port installed in the lower part of the machine tool bed.

[0013] The plate-shaped air flow control member extends downward from the ceiling below the machine tool bed to a height that is 50% to 30% of the height of the bottom of the machine tool bed, and the air intake port installed below the machine tool bed is installed so that it is (entirely) located below the tip of the extending plate-shaped air flow control member. These features are a configuration that allows air to be taken in from the air layer near the ground, where temperatures in the factory are relatively low and stable.

[0014] The cooling system that utilizes environmental characteristics is designed to draw in air using an intake fan installed above the machine tool bed, and the suction effect of the intake fan creates an air flow (by strengthening the suction power of the intake fan, the air flow can be made faster).

[0015] In the second space, which faces the stable ground when the factory temperature is relatively low, a plate-shaped airflow control member is installed extending downward from the ceiling below the machine tool bed. This allows the airflow to creep along the ground side of the second space (below the machine tool bed). Furthermore, the cooling system utilizing environmental characteristics is designed so that air flows from the larger second space to the smaller first space. This concentrates the airflow, and the air flow velocity (in the first space) increases due to a hydrodynamic effect. This further improves the cooling effect. As described above, the cooling system utilizing environmental characteristics according to the present invention makes it possible to efficiently use the stable air layer when the factory temperature is relatively low to cool the machine tool. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is an overall view of a cooling system utilizing environmental characteristics according to the present invention; [Figure 2] FIG. 2 is a diagram for explaining the flow of cooling air in a cooling system that utilizes environmental characteristics. DETAILED DESCRIPTION OF THE INVENTION

[0017] <Cooling system structure utilizing environmental characteristics> An embodiment of a cooling system 10 utilizing environmental characteristics according to the present invention will be described in detail below with reference to Figures 1 and 2. Figure 1 is an overall view of a cooling system 10 utilizing environmental characteristics according to the present invention. Figure 1(a) is a front view, and Figure 1(b) is a side view.

[0018] The cooling system 10 utilizing environmental characteristics utilizes the air layer near the ground in a factory where the temperature is relatively low and stable, to cool the machine tool, that is, it is a cooling system utilizing the environmental characteristics of the factory.

[0019] As shown in Fig. 1, the machine tool is characterized by having an upper part 30 of the machine tool bed (forming the first space 20) located directly below the spindle unit (not shown), and a lower part 50 of the machine tool bed (forming the second space 40) facing the stable ground where the temperature in the factory is relatively low (as a space that serves as a passageway for cooling air). (Many machine tools do not have this kind of configuration.) In short, the first space 20 and the second space 40 are connected and serve as a passageway for cooling air, which cools the area directly below the spindle unit (the shaded area in Fig. 1), which is a heat source generated by the operation of the machine tool.

[0020] The cooling system 10 utilizing environmental characteristics comprises an intake fan 60 installed in the upper part 30 of the machine tool bed (forming the first space 20) directly below the spindle unit (not shown), a plate-shaped air flow control member 70 installed so as to extend downward from the ceiling of the lower part 50 of the machine tool bed (forming the second space 40), and an air intake port 80 installed in the lower part 50 of the machine tool bed (forming the second space 40). The air intake port 80 can be installed in all directions (360°) relative to the installation position of the machine tool.

[0021] The plate-shaped air flow control member 70 extends downward from the ceiling of the lower part 50 of the machine tool bed to a height that is 50% to 30% of the height of the lower part 50 of the machine tool bed, and the air intake port 80 installed in the lower part 50 of the machine tool bed is installed so that its top is lower than the tip of the extending plate-shaped air flow control member 70.

[0022] <Operating state of cooling system using environmental characteristics> FIG. 2 is a diagram for explaining the flow of cooling air in the cooling system 10 that utilizes environmental characteristics.

[0023] The cooling system 10 utilizing environmental characteristics incorporates various innovations to actively utilize the air layer near the ground, where temperatures in factories are relatively low and stable, to cool the machine tool. A flow of cooling air is generated by rotating an intake fan 60 installed in the upper part 30 of the machine tool bed (forming the first space 20) directly below the spindle unit. The flow of cooling air in the cooling system 10 utilizing environmental characteristics will be described later.

[0024] Underneath the machine tool bed 50 are installed plate-shaped air flow control members 70 and air intake ports 80. As shown in Fig. 2, air intake ports 80 are installed so that their uppermost portions are lower than the extending tips of plate-shaped air flow control members 70, and are designed to allow cooling air to be taken into the machine tool from the air layer near the ground, where temperatures in the factory are relatively low and stable.

[0025] By installing the plate-shaped air flow control member 70 (in the machine tool bed lower part 50), the flow of cooling air can be controlled (so that it flows along the machine tool bed lower part 50). That is, the cooling air that enters the machine tool bed lower part 50 from the air intake port 80 (initially) flows into the spaces formed by both ends of the machine tool bed lower part 50 and the plate-shaped air flow control member 70 (the spaces between the machine tool bed lower part 50 and the plate-shaped air flow control member 70), as shown by the arrows in Fig. 2, and also into the spaces formed by the plate-shaped air flow control members 70 and one another (the spaces between two plate-shaped air flow control members 70).

[0026] However, air that flows into the space formed by both end sides of the machine tool bed lower part 50 and the plate-shaped air flow control member 70, and into the space formed by the plate-shaped air flow control member 70 and the plate-shaped air flow control member 70, is blocked by the plate-shaped air flow control member 70 and cannot proceed any further (indicated by "X" in FIG. 2). As a result, air that attempts to flow into the space formed by both end sides of the machine tool bed lower part 50 and the plate-shaped air flow control member 70, and into the space formed by the plate-shaped air flow control member 70 and the plate-shaped air flow control member 70, also flows only toward the center of the machine tool bed lower part 50.

[0027] In other words, the cooling air flows along the machine tool bed lower part 50. The installation of the plate-shaped airflow control member 70 stops the upward flow at both ends of the machine tool bed lower part 50, i.e., controls the cooling air so that it can only rise (only directly below the machine tool bed upper part 30), allowing heat exchange with the cooling air (entering the machine tool bed upper part 30, which forms the first space 20) from the air layer near the ground, where temperatures in the factory are relatively low and stable. In other words, the air above the machine tool bed lower part 50 (at a height of more than 0.2 m above the ground), which is not part of the air layer near the ground, cannot be used for cooling. Therefore, the cooling air supplied from the air layer near the ground, where temperatures in the factory are relatively low and stable, flows from the machine tool bed lower part 50 to the machine tool bed upper part 30, reaches the area directly below the spindle unit, which is a heat source (the shaded area in FIG. 1), and contributes to cooling the area directly below the spindle unit, which is a heat source.

[0028] <Effects of cooling systems that utilize environmental characteristics> When measuring the temperature distribution based on the height from the ground in a factory, it was found that the air layer up to 0.2 m above the ground is influenced by the temperature underground and is relatively stable. In other words, the air layer close to the ground in a factory, specifically the air layer up to 0.2 m above the ground, has a relatively stable temperature. The applicants discovered that the air layer up to 0.2 m above the ground plays an important role in the cooling effect of the machine tool bed. (Based on this finding, it can be said that it is desirable to install the air intake 80 installed in the lower part 50 of the machine tool bed so that its height (the top of the air intake 80) is 0.2 m or less above the ground in the factory.)

[0029] The cooling system 10, which utilizes environmental characteristics, exchanges heat with the ground in a large space (under the machine tool bed 50) and takes this air into a small space (upper part of the machine tool bed 30), thereby increasing the flow rate (a clear effect based on knowledge of fluid mechanics) and efficiently cooling the object to be cooled.

[0030] The cooling system 10 utilizing environmental characteristics is equipped with an air intake 80 and a plate-shaped airflow control member 70 as components for utilizing the air layer near the ground, where temperatures in a factory are stable and relatively low, to cool the machine tool bed main body (particularly the upper part 30 of the machine tool bed). The air intake 80 (which can be installed in all directions, i.e., 360°) installed in the lower part 50 of the machine tool bed is installed so as to be lower than the tip of the extending plate-shaped airflow control member 70, so that it can take in the air layer near the ground, where temperatures in a factory are stable and relatively low. (Since air with a relatively low temperature has a high specific gravity, only stable air with a low temperature enters through the air intake 80.)

[0031] The cooling system 10 utilizing environmental characteristics is equipped with a plate-shaped airflow control member 70, which allows the airflow to flow along the bottom surface of the machine tool bed lower part 50. In other words, the system is designed to draw the air that has flowed along the bottom surface of the machine tool bed lower part 50 (air near the ground where temperatures in a factory are stable and relatively low) into the machine tool bed upper part 30, thereby enhancing the air-cooling effect. Therefore, it is now possible to use the stable air layer in a factory where temperatures are relatively low to cool the machine tool bed upper part 30.

[0032] <Example of cooling system modification using environmental characteristics> The cooling system utilizing environmental characteristics according to the present invention is not limited to the aspects of the above-described embodiments, and the configurations of the first space, the upper part of the machine tool bed, the second space, the lower part of the machine tool bed, the intake fan, the plate-shaped air flow control member, the air intake port, etc. can be appropriately changed as necessary within the scope of the present invention. [Industrial Applicability]

[0033] The cooling system utilizing environmental characteristics according to the present invention has the excellent effects described above, and can therefore be suitably used as a cooling mechanism for the bed section (which is affected by the spindle unit, which is the heat source of the machine tool). [Explanation of symbols]

[0034] 10. Cooling system utilizing environmental characteristics 20...1st space part 30··Upper part of machine tool bed 40...Second space 50··Underside of machine tool bed 60··Intake fan 70··Plate-shaped air flow control member 80··Air intake

Claims

1. This cooling system utilizes the air layer near the ground where the temperature in the factory is relatively low and stable to cool the machine tool, i.e., utilizes the environmental characteristics of the factory, The machine tool bed is made up of an upper part of the machine tool bed (forming a first space) located directly below the spindle unit, and a lower part of the machine tool bed (forming a second space) facing the stable ground in a factory where the temperature is relatively low. an intake fan installed above the machine tool bed; a plate-shaped airflow control member installed so as to extend downward from the ceiling below the machine tool bed; A cooling system utilizing environmental characteristics, characterized by having an air intake port installed under the machine tool bed.

2. 2. The cooling system utilizing environmental characteristics described in claim 1, characterized in that the plate-shaped air flow control member extends downward from the ceiling below the machine tool bed to a height of 50% to 30% of the height of the bottom of the machine tool bed.

3. 3. A cooling system utilizing environmental characteristics according to claim 1 or claim 2, characterized in that the air intake port installed under the machine tool bed is installed so as to be located at a position lower than the tip end of the plate-shaped air flow control member.

Images