Rotary valve for an absorption heat pump

Patent metadata

Field	Value
Publication number	US-9618243-B2
Application number	US-201414313268-A
Country	US
Kind code	B2
Filing date	Jun 24, 2014
Priority date	Jun 24, 2013
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

A rotary valve for an adsorption heat pump may include a cylindrical valve body, arranged rotatably about a central axis in a predetermined rotation direction with an outer covering and two front plates. A plurality of counter-directional high temperature connections may be arranged on the outer covering for connecting a high temperature heat source. A plurality of counter-directional medium temperature connections may be arranged on the outer covering for connecting a medium temperature heat sink. A plurality of sorption module connections may be arranged on the front plates for connecting a plurality of corresponding sorption modules. A duct system may pass through the valve body for directing a fluid, and a throttle, integrated into the valve body, may be included for constricting a flow cross-section at a throttle site of the duct system. The duct system may include open ducts and closed ducts.

First claim

The invention claimed is:

1. A rotary valve for an adsorption heat pump, comprising:
a cylindrical valve body, arranged rotatably about a central axis in a predetermined rotation direction with an outer covering and two front plates;
a plurality of counter-directional high temperature connections arranged on the outer covering for connecting a high temperature heat source;
a plurality of counter-directional medium temperature connections arranged on the outer covering for connecting a medium temperature heat sink;
a plurality of sorption module connections arranged on the front plates for connecting a plurality of corresponding sorption modules;
a duct system passing through the valve body for directing a fluid;
a throttle, integrated into the valve body, for constricting a flow cross-section at a throttle site of the duct system, wherein the duct system includes open ducts, which open into a sorption module connection, and closed ducts, which at least one of terminate in and terminate at a front plate; and
a first switch position, in which the fluid flows through the throttle site and a second switch position, in which the fluid does not flow through the throttle site, and cyclically switching (i) after a first time interval from the first switch position into the second switch position and (ii) after at least a second time interval from the second switch position back into the first switch position.

2. The rotary valve according to claim 1 , wherein the throttle is dimensioned to include a predetermined volume of the fluid flowing through the throttle site in the first time interval.

3. The rotary valve according to claim 1 , wherein the duct system includes the open and closed ducts in an identical number.

4. The rotary valve according to claim 3 , wherein the open and closed ducts are arranged in an alternating sequence.

5. The rotary valve according to claim 1 , further comprising apertures arranged substantially perpendicular to the central axis for connecting the duct system with at least one of the medium temperature connections and the high temperature connections.

6. The rotary valve according to claim 1 , wherein the first switch position further includes at least one of (i) the fluid is directed from a feed of the high temperature heat source via at least one of the sorption modules and via the throttle site into a return of the medium temperature heat sink, and (ii) the fluid is directed from a feed of the medium temperature heat sink via at least one of the sorption modules and via a further throttle site into a return of the high temperature heat source; and
the second switch position further includes at least one of (i) the fluid is directed from a feed of the high temperature heat source via at least one of the sorption modules into a return of the high temperature heat source and (ii) the fluid is directed from a feed of the medium temperature heat sink via at least one of the sorption modules into a return of the medium temperature heat sink.

7. The rotary valve according to claim 6 , wherein cyclically switching from the first switch position into the second switch position after the first time interval and from the second switch position into the first switch position after at least the second time interval includes the first time interval having a different duration than the second time interval.

8. The rotary valve according to claim 7 , wherein the throttle is dimensioned to include a predetermined volume of the fluid flowing through the throttle site in the first time interval.

9. The rotary valve according to claim 8 , wherein the duct system includes the open and closed ducts in an identical number.

10. The rotary valve according to claim 9 , wherein the open and closed ducts are arranged in an alternating sequence.

11. The rotary valve according to claim 1 , wherein at least a portion of the connected sorption modules are flowed through serially.

12. The rotary valve according to claim 1 , further comprising at least two axial ducts, which connect respectively two sorption module connections, the at least two axial ducts arranged offset in a rotation direction of the rotary valve.

13. The rotary valve according to claim 12 , further comprising apertures, arranged substantially perpendicular to the central axis, for connecting the duct system with at least one of the medium temperature connections and the high temperature connections.

14. The rotary valve according to claim 1 , wherein on a heating of the sorption modules, the fluid flows through the sorption modules in a direction which is opposed to the direction in which the fluid flows through the sorption modules on a cooling of the sorption modules.

15. An adsorption heat pump, comprising:
a plurality of sorption modules; and
a rotary valve, the rotary valve including:
a valve body rotatably arranged about a central axis in a predetermined rotation direction, the valve body including an outer covering and at least two front plates;
at least two counter-directional high temperature connections arranged on the outer covering for connecting a high temperature heat source;
at least two counter-directional medium temperature connections arranged on the outer covering for connecting a medium temperature heat sink;
a plurality of sorption module connections arranged on the front plates for connecting the plurality of sorption modules;
a duct system passing through the valve body for directing a fluid;
a throttle integrated into the valve body for constricting a flow cross-section at a throttle site of the duct system, wherein the duct system includes open ducts which open into a sorption module connection, and closed ducts which at least one of terminate in and terminate at a front plate; and
a first switch position, in which at least one of (i) a fluid is directed from a feed of the high temperature heat source via at least one of the sorption modules and via the throttle site into a return of the medium temperature heat sink, and (ii) the fluid is directed from a feed of the medium temperature heat sink via at least one of the sorption modules and via a further throttle site into a return of the high temperature heat source.

16. The pump according to claim 15 , further comprising a second switch position, in which at least one of (i) the fluid is directed from a feed of the high temperature heat source via at least one of the sorption modules into a return of the high temperature heat source, and (ii) the fluid is directed from a feed of the medium temperature heat sink via at least one of the sorption modules into a return of the medium temperature heat sink.

17. The pump according to claim 16 , further comprising cyclically switching after a first time interval from the first switch position into the second switch position, and after at least a second time interval from the second switch position into the first switch position, wherein the throttle is configured to allow a predetermined volume of fluid to flow through the throttle site in the first time interval.

18. A rotary valve for an adsorption heat pump, comprising:
a cylindrical valve body rotatably arranged about a central axis in a predetermined rotational direction, the valve body having an outer covering and at least two front plates;
at least two counter-directional high temperature connections arranged on the outer covering for connecting a high temperature heat source;
at least two counter-directional medium temperature connections arranged on the outer covering for connecting a medium temperature hea

Assignees

• Mahle Behr Gmbh & Co Kg

Inventors

• Burk Roland
• Stripf Matthias

Classifications

• Y02A30/27

  Relating to heating, ventilation or air conditioning [HVAC] technologies · CPC title

• F25B30/04 Primary

  of the sorption type · CPC title

• Y02B30/62

  Absorption based systems · CPC title

• Y10T137/86654

  For plural lines · CPC title

• Y10T137/85986

  Pumped fluid control · CPC title