# US 2023/0067553 A1 · Liquid cooling head

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2023/0067553 A1
- Document ID: US20230067553A1
- Status: Published application
- Kind: A1
- Application number: 17/864,236
- Filed: 2022-07-13
- Published: 2023-03-02
- Earliest claimed: 2021-08-26
- Assignees: Auras Technology Co., Ltd.
- Applicants: Auras Technology Co., Ltd.
- Inventors: Mu-Shu FAN; Chien-Yu CHEN; Ming-Yuan CHIANG
- Web page: https://patentgrep.com/patent/US20230067553A1

## CPC

- F04D 1/00: Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (adapted for pumping specific fluids F04D7/00; priming or boosting F04D9/00)
- F04D 29/5806: {Cooling the drive system}
- F04D 13/0646: {the hollow pump or motor shaft being the conduit for the working fluid}
- F04D 29/043: Shafts
- F04D 29/2277: {for increasing NPSH or dealing with liquids near boiling-point}
- F04D 29/4293: {Details of fluid inlet or outlet}
- F04D 29/586: {specially adapted for liquid pumps}
- H05K 7/20254: {Cold plates transferring heat from heat source to coolant}
- H05K 7/20272: {Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds}
- H05K 7/20327: {Accessories for moving fluid, for connecting fluid conduits, for distributing fluid or for preventing leakage, e.g. pumps, tanks or manifolds}
- H05K 7/2039: {characterised by the heat transfer by conduction from the heat generating element to a dissipating body (arrangements for increasing/decreasing heat-transfer, e.g. fins details, F28F13/00)}
- H05K 7/20418: {the radiating structures being additional and fastened onto the housing}
- H10W 40/47: by flowing liquids, e.g. forced water cooling
- F04D 17/025: {comprising axial flow and radial flow stages}
- F04D 25/06: the pump being electrically driven (F04D25/08 takes precedence)
- F04D 29/426: {especially adapted for liquid pumps}
- F04D 29/588: {cooling or heating the machine (F04D29/5886, F04D29/5893 take precedence)}
- H05K 7/20318: {Condensers}
- H10W 40/226: {characterised by projecting parts, e.g. fins to increase surface area (leadframes for cooling H10W70/461)}
- Y02D 10/00: Energy efficient computing, e.g. low power processors, power management or thermal management
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

A liquid cooling head includes an upper casing, an impeller, a bottom casing and a skived fin cooling plate. The upper casing has an inlet and an outlet, the upper casing is fixed on the bottom casing, and the impeller is arranged between the upper casing and the skived fin cooling plate. In addition, the skived fin cooling plate is fixed on the bottom casing, and the impeller sucks the heat-dissipating liquid from the inlet and drives the heat-dissipating liquid passing through the skived fin cooling plate, upwardly passing through the impeller and then discharged from the outlet.

## Claims

### Claim 1

A liquid cooling head, comprising:
an upper casing, having an inlet and an outlet;
an impeller;
a bottom casing, wherein the upper casing is fixed on the bottom casing; and
a skived fin cooling plate, fixed on the bottom casing, wherein the impeller is arranged between the upper casing and the skived fin cooling plate, wherein the impeller sucks a heat dissipating liquid entering from the inlet and drives the heat dissipating liquid to flow through the skived fin cooling plate, upwardly flow through the impeller and then be discharged from the outlet.

### Claim 2 (depends on 1)

The liquid cooling head of claim 1, wherein the impeller comprises:
at least one axial blade; and
at least one centrifugal blade configured on the at least one axial blade, wherein the at least one axial blade sucks the heat dissipating liquid into the at least one centrifugal blade from bottom to top.

### Claim 3 (depends on 2)

The liquid cooling head of claim 2, wherein the impeller further comprises:
a hub, wherein the at least one axial blade is fixed around the hub; and
a rotational ring fixed around the at least one axial blade.

### Claim 4 (depends on 3)

The liquid cooling head of claim 3, wherein the impeller further comprises:
a plurality of permanent magnets fixed around the rotational ring.

### Claim 5 (depends on 4)

The liquid cooling head of claim 4, further comprising:
an intermediate casing, wherein the intermediate casing comprises an opening, and the impeller passes through the opening of the intermediate casing.

### Claim 6 (depends on 5)

The liquid cooling head of claim 5, wherein the at least one centrifugal blade of the impeller is disposed on the intermediate casing, and the rotational ring of the impeller passes through the opening of the intermediate casing.

### Claim 7 (depends on 6)

The liquid cooling head of claim 6, wherein the upper casing further comprises a raised portion, a rotational shaft is fixed in the raised portion, the raised portion passes through a raised portion hole of the impeller, and the rotational shaft passes through a shaft hole of the hub to allow the impeller rotating around the rotational shaft.

### Claim 8 (depends on 5)

The liquid cooling head of claim 5, further comprising:
a stator fixed in the intermediate casing, wherein the stator is immersed in the heat dissipating liquid.

### Claim 9 (depends on 8)

The liquid cooling head of claim 8, wherein the stator comprises:
an upper wire frame;
a bottom wire frame;
a plurality of silicon steel sheets fixed between the upper wire frame and the bottom wire frame; and
a coil wound around the silicon steel sheets, wherein the upper wire frame, the bottom wire frame, the silicon steel sheets and the coil are immersed in the heat dissipating liquid.

### Claim 10 (depends on 9)

The liquid cooling head of claim 9, wherein the silicon steel sheets further comprise a waterproof protective layer coated on the silicon steel sheets.

### Claim 11 (depends on 10)

The liquid cooling head of claim 10, wherein the waterproof protective layer is an epoxy layer, an electroless nickel plating layer or an ultraviolet curable adhesive layer.

### Claim 12 (depends on 5)

The liquid cooling head of claim 5, wherein the upper casing further comprises an inlet channel protrusion to from a curved inlet channel connected to the inlet to guide the heat dissipating liquid through the upper casing and the intermediate casing to the skived fin cooling plate at a bottom.

### Claim 13 (depends on 12)

The liquid cooling head of claim 12, wherein a drainage space is formed between the inlet channel protrusion and a raised portion of the upper casing to accommodate the centrifugal blade, and the drainage space is connected to the outlet, and the curved inlet channel is located beside the inlet channel protrusion and opposite to the drainage space.

### Claim 14 (depends on 3)

The liquid cooling head of claim 3, wherein the bottom casing comprises a bottom casing protrusion, two bottom casing inlets and a bottom casing outlet, wherein the bottom casing outlet is formed in a center of the bottom casing protrusion, the two bottom casing inlets are located on both sides of the bottom casing protrusion, and the bottom casing protrusion is sleeved around the rotational ring of the impeller.