Air-conditioning unit of a motor vehicle and motor vehicle

Patent metadata

Field	Value
Publication number	US-10315486-B2
Application number	US-201715435262-A
Country	US
Kind code	B2
Filing date	Feb 16, 2017
Priority date	Feb 17, 2016
Publication date	Jun 11, 2019
Grant date	Jun 11, 2019

Abstract

An air-conditioning unit of a motor vehicle may include a fan, an evaporator, and a heat exchanger. The heat exchanger may be arranged downstream of the evaporator. The evaporator and heat exchanger may both be arranged in a housing. The air-conditioning unit may also include a first bypass channel bypassing the evaporator. The first bypass channel may be arranged centrally on a side of the evaporator. A width of the first bypass channel may be smaller than a width of the side of the evaporator on which the first bypass channel is arranged.

First claim

The invention claimed is:

1. An air-conditioning unit of a motor vehicle, comprising:
a fan;
an evaporator and a heat exchanger arranged downstream thereof, the evaporator and the heat exchanger being arranged in a housing; and
a first bypass channel bypassing the evaporator;
wherein the first bypass channel is arranged centrally on a side of the evaporator, and a width of the first bypass channel is smaller than a width of the side of the evaporator on which the first bypass channel is arranged.

2. The air-conditioning unit according to claim 1 , further comprising a second bypass channel bypassing the heat exchanger that is arranged centrally on a second side of the heat exchanger, wherein a width of the second bypass channel is smaller than a width of the second side of the heat exchanger on which the second bypass channel is arranged.

3. The air-conditioning unit according to claim 2 , wherein one of:
the second bypass channel is arranged centrally on one of an upper side and a lower side of the heat exchanger; or
the second bypass channel is arranged centrally on one of a left side and a right side of the heat exchanger with respect to a flow direction.

4. The air-conditioning unit according to claim 2 , wherein one of:
the first bypass channel is arranged centrally on an upper side of the evaporator and the second bypass channel is arranged centrally on a lower side of the heat exchanger;
the first bypass channel is arranged centrally on a lower side of the evaporator and the second bypass channel is arranged centrally on an upper side of the heat exchanger;
the first bypass channel is arranged centrally on a right side of the evaporator with respect to a flow direction and the second bypass channel is arranged centrally on a left side of the heat exchanger with respect to the flow direction; or
the first bypass channel is arranged centrally on a left side of the evaporator with respect to the flow direction and the second bypass channel is arranged centrally on a right side of the heat exchanger with respect to the flow direction.

5. The air-conditioning unit according to claim 2 , wherein at least one of the first bypass channel and the second bypass channel have a flow cross-sectional area of approximately 30 cm 2 to 60 cm 2 .

6. The air-conditioning unit according to claim 2 , further comprising at least one of:
a first valve arranged in the first bypass channel; and
a second valve arranged in the second bypass channel.

7. The air-conditioning unit according to claim 1 , wherein one of:
the first bypass channel is arranged centrally on one of an upper side and a lower side of the evaporator; or
the first bypass channel is arranged centrally on one of a left side and a right side of the evaporator with respect to a flow direction.

8. The air-conditioning unit according to claim 1 , further comprising a valve arranged downstream of the heat exchanger.

9. The air-conditioning unit according to claim 1 , wherein one of:
the first bypass channel is arranged centrally on a lower side of the evaporator and the housing has two lateral condensate discharges; or
the first bypass channel is arranged centrally on one of an upper side, a left side, and a right side of the evaporator and the housing has a central condensate discharge.

10. A motor vehicle, comprising an air conditioning unit having:
a fan;
an evaporator and a heat exchanger arranged downstream thereof, the evaporator and the heat exchanger being arranged in a housing; and
a first bypass channel bypassing the evaporator;
wherein the first bypass channel is arranged centrally on a side of the evaporator and a width of the first bypass channel is smaller than a width of the side of the evaporator on which the first bypass channel is arranged.

11. The motor vehicle according to claim 10 , further comprising a second bypass channel bypassing the heat exchanger that is arranged centrally on a second side of the heat exchanger and a width of the second bypass channel is smaller than a width of the second side.

12. The motor vehicle according to claim 11 , wherein one of:
the second bypass channel is arranged centrally on one of an upper side and a lower side of the heat exchanger; or
the second bypass channel is arranged centrally on one of a left side and a right side of the heat exchanger with respect to a flow direction.

13. The motor vehicle according to claim 11 , wherein one of:
the first bypass channel is arranged centrally on an upper side of the evaporator and the second bypass channel is arranged centrally on a lower side of the heat exchanger;
the first bypass channel is arranged centrally on a lower side of the evaporator and the second bypass channel is arranged centrally on an upper side of the heat exchanger;
the first bypass channel is arranged centrally on a right side of the evaporator with regard to a flow direction and the second bypass channel is arranged centrally on a left side of the heat exchanger with regard to the flow direction; or
the first bypass channel is arranged centrally on a left side of the evaporator with regard to the flow direction and the second bypass channel is arranged centrally on a right side of the heat exchanger with regard to the flow direction.

14. The motor vehicle according to claim 11 , wherein at least one of the first bypass channel and the second bypass channel have a flow cross-section of approximately 30 cm 2 to 60 cm 2 .

15. The motor vehicle according to claim 11 , wherein at least one of:
a first valve is arranged in the first bypass channel; and
a second valve is arranged in the second bypass channel.

16. The motor vehicle according to claim 15 , wherein a third valve is arranged downstream of the heat exchanger.

17. The motor vehicle according to claim 10 , wherein one of:
the first bypass channel is arranged centrally on one of an upper side and a lower side of the evaporator; or
the first bypass channel is arranged centrally on one of a left side and a right side of the evaporator with respect to a flow direction.

18. The motor vehicle according to claim 10 , wherein one of:
the first bypass channel is arranged centrally on a lower side of the evaporator and the housing has two lateral condensate discharge means; or
the first bypass channel is arranged centrally on one of an upper side, a left side, and a right side of the evaporator and the housing has a central condensate discharge means.

19. A motor vehicle air-conditioning unit, comprising:
a fan;
an evaporator and a heat exchanger arranged downstream thereof, that are both arranged in a housing;
a first bypass channel bypassing the evaporator that is arranged centrally on a first side of the evaporator and a width of the first bypass channel is smaller than a width of the first side;
a second bypass channel bypassing the heat exchanger that is arranged centrally on a second side of the heat exchanger and a width of the second bypass channel is smaller than a width of the second side of the heat exchanger;
a first valve arranged in the first bypass channel; and
a second valve arranged in the second bypass channel.

20. The air-conditioning unit according to claim 19 , wherein one of:
the first bypass channel is arranged centrally on a lower side of the evaporator and the housing has two lateral condensate discharge means; or
the first bypass channel is arranged centrally on one of an upper side, a left side, and a right side of the evaporator and the housing has a central condensat

Assignees

• Mahle Int Gmbh

Inventors

• Kullen Philipp
• Moellert Thorsten
• Sickelmann Michael
• Venezia Vincenzo

Classifications

• B60H2001/00164

  with more than one by-pass · CPC title

• B60H1/00035 Primary

  for sending an air stream of uniform temperature into the passenger compartment · CPC title

• B60H1/3233

  characterised by condensed liquid drainage means · CPC title

• B60H1/0005 Primary

  the air being firstly cooled and subsequently heated or vice versa · CPC title

• B60H1/3229

  characterised by constructional features, e.g. housings, mountings, conversion systems (B60H1/3227, B60H1/3233 take precedence) · CPC title