Dual flow pressure washer
A pressure washer is provided. The pressure washer includes a fluid inlet and a pump disposed to receive fluid from the fluid inlet. A spray gun is provided that includes a first outlet and a separate second outlet. A first conduit fluidly connects the fluid inlet and the pump with the first outlet and a second conduit fluidly connects the fluid inlet with the second outlet.
1. A hose for use with a pressure washer having a spray gun, the hose comprising:
a first hose section for directing a flow of relatively high pressure fluid to the spray gun, the first hose section including a first layer formed from a first material and a second layer formed from a second material, the second layer substantially surrounding the first layer; and
a second hose section for directing a flow of relatively low pressure fluid to the spray gun parallel to the flow of relatively high pressure fluid,
wherein the second hose section is formed from the second material monolithically with the second layer of the first hose section to form an innermost layer of the second hose section that is in direct contact with the flow of relatively low pressure fluid.
2. The hose of claim 1 , wherein the second layer of the first hose section and the second hose section are formed by extrusion such that the first hose section and the second hose section are a co-extruded assembly.
3. The hose of claim 1 , wherein the second hose section is formed by a single layer monolithically formed with the second layer of the first hose section.
4. The hose of claim 1 , wherein the first hose section further includes a third layer, and wherein the third layer substantially surrounds the first layer between first layer and the second layer.
5. The hose of claim 4 , wherein the third layer is composed of woven fibers and the first layer is composed of a polymeric material.
6. The hose of claim 1 , further comprising a central portion integrally connecting as a single component the second layer of the first hose section and the second hose section.
7. The hose of claim 1 , wherein the first hose section extends generally parallel to the second hose section such that the first hose section and the second hose section form two parallel flow paths.
8. The hose of claim 1 , wherein the first hose section is fluidly isolated from the second hose section such that the relatively high pressure fluid and the relatively low pressure fluid are discrete flows of fluid.
9. A pressure washer for pressurizing and spraying fluid from a source of fluid, the pressure washer comprising:
a base including,
a fluid inlet configured to connect to the source of fluid,
a pump including an outlet, and
a bypass line in fluid communication with the fluid inlet and bypassing the pump;
a spray gun; and
a hose to provide fluid communication from the base to the spray gun, the hose including
a first hose section in fluid communication with the outlet of the pump and the spray gun to direct a flow of relatively high pressure fluid from the pump to the spray gun, the first hose section including a first layer formed from a first material and a second layer formed from a second material, the second layer substantially surrounding the first layer, and
a second hose section in fluid communication with the bypass line to direct a flow of relatively low pressure fluid from the source of fluid to the spray gun,
wherein the second hose section is formed from the second material monolithically with the second layer of the first hose section such that the second hose section is formed by a single layer of the second material that is in direct contact with the flow of relatively low pressure fluid.
10. The pressure washer of claim 9 , wherein the second layer of the first hose section and the second hose section are formed by extrusion such that the first hose section and the second hose section are a co-extruded assembly.
11. The pressure washer of claim 9 , wherein the first hose section further includes a third layer, and wherein the third layer of the first hose section substantially surrounds the first layer.
12. The pressure washer of claim 11 , wherein the third layer of the first hose section is composed of woven fibers and the first layer of the first hose section is composed of a polymeric material.
13. The pressure washer of claim 9 , further comprising a central portion integrally connecting as a single component the second layer of the first hose section and the second hose section.
14. The pressure washer of claim 9 , wherein the first hose section extends generally parallel to the second hose section such that the first hose section and the second hose section form two parallel flow paths.
15. The pressure washer of claim 9 , wherein the first hose section is fluidly isolated from the second hose section such that the relatively high pressure fluid and the relatively low pressure fluid are discrete flows of fluid.
16. A method of manufacturing a hose for use with a pressure washer having a spray gun, the method comprising:
providing a first layer of a first material to provide a first flow path for directing a flow of relatively high pressure fluid to the spray gun; and
monolithically forming a second layer of a second material that substantially surrounds the first layer to define a first hose section and also an innermost layer of a second hose section that defines a second flow path parallel to the first flow path for directing a flow of relatively low pressure fluid to the spray gun, wherein the innermost layer of the second hose section is formed of the second material and is in direct contact with the flow of relatively low pressure fluid.
17. The method of claim 16 , wherein monolithically forming the second layer of the first hose section and the second hose section includes extruding the second layer of the first hose section over the first layer of the first hose section while extruding the second hose section such that the first hose section and the second hose section are a co-extruded assembly.
18. The method of claim 17 , further comprising feeding the first layer into an extrusion die having a first cavity and a second cavity, wherein extruding the second layer of the first hose section over the first layer includes supplying extrusion material to the first cavity to substantially surround the first layer with the second layer, and wherein extruding the second hose section includes supplying extrusion material to the second cavity to form the second hose section.
19. The method of claim 16 , wherein providing the first layer further includes providing the first layer with a third layer that surrounds the first layer.
20. The method of claim 19 , wherein providing the third layer includes providing the third layer composed of a woven material, and wherein providing the first layer includes providing the first layer composed of a polymeric material.
21. The method of claim 16 , wherein forming the second layer of the first hose section and the second hose section includes forming the second hose section simultaneously and in parallel to the second layer of the first hose section.
22. A hose for use with a pressure washer having a spray gun, the hose comprising:
a first hose section for directing a flow of relatively high pressure fluid to the spray gun, the first hose section including a first layer formed from a first material and a second layer formed from a second material, the second layer substantially surrounding the first layer; and
a second hose section including a generally cylindrical layer formed from the second material and an innermost surface for directing a flow of relatively low pressure fluid to the spray gun parallel to the flow of relatively high pressure fluid, the innermost surface being in direct contact with the flow of relatively low pressure fluid,
wherein the second layer of the first hose section and the layer of the second hose section are monolithic, and
wherein the first layer of the first hose section increases a hoop strength of the first hose section relative to the second hose section to withstand internal pressure from the flow of relatively high pressure fluid.
23. The hose of claim 22 , wherein the innermost surface of the second hose section is formed by the layer of the second hose section such that the second hose section is formed as a single layer.
24. The hose of claim 22 , wherein the first layer of the first hose section is composed of woven fibers.
25. The hose of claim 24 , wherein the first hose section further includes a third layer positioned within the first layer, and wherein the third layer is composed of a polymeric material.