Differences Between an EXAIR Adjustable Spot Cooler and Cold Gun Aircoolant System

Adjustable Spot Cooler
Cold Gun Aircoolant System

Have you ever wondered about the differences between the Adjustable Spot Cooler and the Cold Gun

In their most basic form, these two items are very similar – both require a compressed air supply, both produce localized cold air flows, both have magnetic bases, and both have the same basic profile.  However, under closer scrutiny, we can see that the Adjustable Spot Cooler can pivot on its magnetic base.  It also has the ability to vary the cold fraction and thereby vary the cold outlet temperature and flow.  The Adjustable Spot Cooler is supplied with multiple generators which allow for control of the compressed air inlet flow – yet another way to vary the cooling capacity of the Adjustable Spot Cooler.

Model 3925 Adjustable Spot Cooler System has a Dual Outlet Hose Kit for distribution of cold air flow to two points.

These distinctions make the Adjustable Spot Coolers the most versatile spot cooler on the market.  They can be used in many applications in which the exact cooling capacity is not known, a target temperature is required, or if the application requires temperature variations.   For example, if a customer has an application where a specific temperature is required or if shrinking/expansion is critical, the Adjustable Spot Cooler can provide a solution unavailable with a Cold Gun.  EXAIR offers them with either a single outlet for direct cooling or a dual outlet to capture both sides. 

The Cold Gun, on the other hand, produces a preset volume at a specific temperature drop.  This is great for applications with steady heat loads like machining, grinding, or laser cutting; or for applications in which you need to be free from tampering.  The Cold Gun will produce consistent performance without any modification needed from the end user.  EXAIR offers two types, the Cold Gun Aircoolant System and High Power Cold Gun Air Coolant System, which gives twice the cooling capacity.  Both units can be purchased with a single outlet hose or a dual output hose. 

There are many applications for our Spot Coolers.  They help remove heat to extend tool life, and they can help eliminate coolant to improve production rates.  If you have an application where you need to remove heat and do not know which unit to select, an Application Engineer at EXAIR is here to help you. 

John Ball
Application Engineer
Email: johnball@exair.com
Twitter: @EXAIR_jb

Informal Video: Changing the Generator in an Adjustable Spot Cooler

One of our more versatile cooling devices is the Adjustable Spot Cooler.  The temperature can be changed from ambient down to -30 deg. F (-34 deg. C) with a turn of a knob.  In addition to this, the cooling capacity can be modified as well by simply changing the generator.  In this video, I will show you how to do this.

John Ball
Application Engineer
Email: johnball@exair.com
Twitter: @EXAIR_jb

Adjustable Spot Cooler Keeps Band Saw Blade Cool

flir image
Heat camera image of band saw blade heat

We run into interesting applications that require cooling all the time. Here’s an example of a spot cooling application for a tire cutting application that used a FLIR camera to show the heat generated within the band saw blade.

The customer is a world supplier of tires for various vehicles from ATV to construction use. And they have a need to cut tires up for quality control testing as well as R&D purposes. They were looking for a low cost and efficient way to cool the blade without using liquid coolant or water as those methods require implementation of waste handling schemes that this customer did not want to deal with. So, they came to EXAIR as they knew we specialized in cold air cooling products. Specifically, they had interest in model 3925 (Dual Point, Adjustable Spot Cooler System). The dual point hose kit would allow for even cooling on both sides of the band saw blade. After discussing their application details, we agreed that model 3925 would be the best offering we could make to the customer. As we have a band saw in our workshop, I located some rubber material that we had with similar properties to a tire and made some quick tests to determine that in fact, model 3925 allowed for only a modest 5°C rise in temperature. The customer was quite satisfied at our test result and purchased 4 units for their band saws.

Neal Raker, International Sales Manager
nealraker@exair.com

@EXAIR_NR