Jet cartridges for jetting fluid material, and related methods

Patent metadata

Field	Value
Publication number	US-2016354791-A1
Application number	US-201514730522-A
Country	US
Kind code	A1
Filing date	Jun 4, 2015
Priority date	Jun 4, 2015
Publication date	Dec 8, 2016
Grant date	—

Abstract

A jet cartridge for jetting fluid material includes a body adapted to receive fluid material, and a fluid passage defined within the body and extending along a longitudinal axis thereof. At least a portion of the fluid passage extends obliquely relative to the longitudinal axis. The body is adapted to receive heat from a heating element and to transfer the heat to the fluid material flowing through the fluid passage. A method of jetting fluid material with a jet dispenser including a jet cartridge includes receiving fluid material into the jet cartridge, directing the fluid material through the jet cartridge along a longitudinal axis thereof and obliquely relative to the longitudinal axis, heating the fluid material directed through fluid cartridge to a target temperature, maintaining the target temperature as the fluid material enters a nozzle, and jetting the heated fluid material through the nozzle.

First claim

What is claimed is:

1 . A jet cartridge for jetting fluid material, comprising:
a body adapted to receive fluid material; and a fluid passage defined within the body and extending along a longitudinal axis thereof, at least a portion of the fluid passage extending obliquely relative to the longitudinal axis, wherein the body is adapted to receive heat from a heating element and to transfer the heat to the fluid material flowing through the fluid passage.

2 . The jet cartridge of claim 1 , wherein the fluid passage extends at least partially circumferentially about the longitudinal axis.

3 . The jet cartridge of claim 1 , wherein the fluid passage includes a spiral portion that extends about the longitudinal axis.

4 . The jet cartridge of claim 3 , wherein the spiral portion extends at least 360 degrees about the longitudinal axis.

5 . The jet cartridge of claim 1 , wherein the body includes an outer body and a flow insert received within the outer body, the fluid passage being defined between the outer body and the flow insert.

6 . The jet cartridge of claim 5 , wherein at least one of the outer body or the flow insert includes a groove at least partially defining the fluid passage.

7 . The jet cartridge of claim 5 , wherein the flow insert includes a cylindrical portion, and the fluid passage is the only fluid passage defined between the cylindrical portion and the outer body.

8 . The jet cartridge of claim 5 , wherein the flow insert includes a shaft portion and the outer body includes a socket that releasably receives the shaft portion, the fluid passage being defined between the outer body and the shaft portion.

9 . The jet cartridge of claim 1 , further comprising:
a releasable seal established between the flow insert and the outer body, the releasable seal being adapted to frictionally engage the flow insert and the outer body and to contain fluid material within the fluid passage.

10 . The jet cartridge of claim 1 , wherein the heating element peripherally surrounds the body, and the body directly contacts the heating element for receiving heat from the heating element, the heating element adapted to be energized by a power supply controllable to achieve a target temperature of the fluid material flowing through the fluid passage.

11 . The jet cartridge of claim 10 , wherein the body includes an outer body and a flow insert received within the outer body, the fluid passage being defined between the outer body and the flow insert, and the outer body including an annular shoulder that directly contacts the heating element for receiving heat from the heating element.

12 . The jet cartridge of claim 10 , wherein the outer body and the flow insert are adapted to be maintained in axial engagement by the heating element, and the jet cartridge is releasably coupleable to a jet dispenser actuator via the heating element.

13 . A method of jetting fluid material with a jet dispenser including an actuator and a jet cartridge operatively coupled to the actuator and having a nozzle, the method comprising:
receiving fluid material into the jet cartridge; directing the fluid material through the jet cartridge along a longitudinal axis thereof and obliquely relative to the longitudinal axis, in a direction toward the nozzle; heating the fluid material directed through the jet cartridge to a target temperature; maintaining the target temperature as the fluid material enters the nozzle; and jetting the heated fluid material through the nozzle.

14 . The method of claim 13 , wherein directing the fluid material through the fluid cartridge includes directing the fluid material along a spiral path.

15 . The method of claim 14 , wherein, directing the fluid material along the spiral path includes directing the fluid material 360 degrees about the longitudinal axis of the jet cartridge.

16 . The method of claim 13 , wherein the jet cartridge includes an outer body and a flow insert received within the outer body, and directing the fluid material through the fluid cartridge includes directing the fluid material through a fluid passage defined between the flow insert and the outer body.

17 . The method of claim 16 , wherein directing the fluid material through the fluid passage includes directing the fluid material peripherally about at least a portion of the flow insert.

18 . The method of claim 13 , wherein heating the fluid material directed through the jet cartridge includes directly contacting the body with a heating element and energizing the heating element with a power supply, and maintaining the target temperature of the fluid material includes selectively controlling the power supply.

19 . The method of claim 18 , wherein maintaining the target temperature of the fluid material includes selectively controlling the power supply in response to a sensed temperature.

20 . A jet cartridge for jetting fluid material, comprising:
an outer body; a flow insert received within the outer body; a fluid passage defined between the outer body and the flow insert; and a frictional connection between the outer body and the flow insert, the frictional connection facilitated by a releasable sealing element disposed between the outer body and the flow insert, and the frictional connection adapted to be disengaged for exposing the fluid passage without use of an independent tool, wherein the outer body is adapted to receive heat from a heating element and to transfer the heat to the fluid material flowing through the fluid passage.

21 . The jet cartridge of claim 20 , wherein the fluid passage extends along a longitudinal axis of the jet cartridge, and at least a portion of the fluid passage extends obliquely relative to the longitudinal axis.

22 . The jet cartridge of claim 20 , wherein the fluid passage includes a spiral portion that extends about a longitudinal axis of the jet cartridge.

23 . The jet cartridge of claim 20 , wherein the heating element directly contacts the outer body and maintains the outer body in axial engagement with the flow insert, the heating element being releasably coupleable to a jet dispenser actuator with a clamp.

Assignees

• Nordson Corp

Inventors

• Des Jardins Stephen R
• Lewis Alan R
• Wilburn Jared
• Wright Robert J

Classifications

• B05C9/14

  the auxiliary operation involving heating {or cooling} · CPC title

• B05D1/02

  performed by spraying · CPC title

• B05B9/002

  incorporating means for heating or cooling, e.g. the material to be sprayed · CPC title

• B05B7/22

  electrically {, magnetically or electromagnetically}, e.g. by arc {(B05B7/20 takes precedence)} · CPC title

• B05B1/02

  designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, {or having an outlet of particular shape}(B05B1/26, B05B1/28, B05B1/34 take precedence) · CPC title