A wound tube heat exchanger 10 article that receives a heat exchange fluid and its method of manufacture. The exchanger 10 has one or more layers 12 of a tube 14. In one embodiment, the tube surface is bare. In other embodiments, the outside tube surface is enhanced to produce turbulence. At least some of the layers 12 have an ovate oblong configuration. A pair of opposing linear runs 16,18 is connected by a pair of opposing curved sections 20,22. In some embodiments, the layers are circular, oval or rectangular with radiused corners. An elongate spacer member 24 has forwardly 26 and rearwardly 28 facing edges. Defined within those edges are engagement surfaces 30 that detachably retain the opposing linear runs 16,18.

Apparatus and methods are described for novel radiant tube coil support designs that are insertable through holes in the casing walls of fired heaters from the outside of the heater.

An outdoor device is provided which has: a heat exchanger including a heat exchange portion having multiple heat transfer pipes and multiple heat transfer fins joined to the heat transfer pipes, and a pair of header pipe assemblies arranged substantially in parallel along the upper-to-lower direction to face each other and configured to bundle end portions of the heat transfer pipes extending from the heat exchange portion; and a housing configured to support the heat exchanger via a support bracket. The support bracket includes a heat exchange side holding portion, a housing side holding portion, and a fin contact portion provided integrally with the heat exchange side holding portion or the housing side holding portion and arranged in contact with or in proximity to an edge portion of the heat exchange portion adjacent to one of the header pipe assemblies.

The invention relates to a heat exchanger for indirect heat exchange between a first and a second medium, with a shell space for receiving the first medium, and a tube bundle arranged in the shell space and for receiving the second medium. The tubes are helically wound in a number of tube layers onto a core tube. At least one spacer is provided by means of which a first tube layer that is situated further outwards in the radical direction is supported on a neighbouring, second tube layer that is situated further inwards. The at least one spacer has a flow-directing region designed to deflect part of the first medium flowing along a tube of the first tube layer in the direction of the second tube layer situated further inwards in the radical direction.

In this vehicular air-conditioning device, an inner wall surface along a width direction of an air-conditioning casing is provided with guide portions each extending in a vertical direction. The guide portions are recessed on the outside in the width direction, forming recesses with respect to the inner wall surface. When an evaporator is inserted from above the air-conditioning casing and assembled inside, second seal portions of side plates disposed on side surfaces of the evaporator are respectively inserted into the guide portions, whereby the evaporator is guided along the vertical direction. The guide portions further include an entry portion disposed at an upper end portion of a first guide wall and expanding in a direction away from a second guide wall. Thus, the evaporator can be inserted into the air-conditioning casing from above in a preferable manner.

A case of a heat exchanging apparatus includes an opening section provided on the sidewall and a plate-like lid member for opening and closing the opening section. A heat exchange section of a heat transfer medium circulation pipe is fixed to the inner surface of a lid member via a frame body formed by combining bar-like members. When the lid member is at a position where the opening section is closed, the heat exchange section of the heat transfer medium circulation pipe is housed fixedly in the case, and when the lid member is at a position where the opening section is open, the heat exchange section of the heat transfer medium circulation pipe is withdrawn from the opening section out of the case. This can reduce labor for cleaning and maintenance of the apparatus effectively and improve efficiency of heat exchange of the apparatus.

A spiral finned condenser is provided, which comprises: a condensing pipe and a fin; the fin is spirally wound on a surface of the condensing pipe; the condensing pipe forms a cubic structure by means of a plurality of turns and bends. The condenser further comprises a fixing bracket which is clamped and fixed on the condensing pipe. The condenser has the advantages of having a small size, a compact structure and good cooling effects.

The present invention enhances quietness in a passenger compartment of a vehicle by reducing the volume of refrigerant flowing noise emitted from an evaporator provided within a unit case. A vehicle air conditioner (1) includes a unit case (2) incorporated in a dashboard of a vehicle, an air flow path (3) formed in an interior of the unit case (2), an evaporator (4) provided inside the air flow path (3), and a connecting member (16A) configured to connect a portion of the evaporator (4) that is located near a central portion thereof in a surface direction to a structure (a front panel (2b)) of the unit case (2). The connecting member (16A) may be a biasing member that biases the portion of the evaporator (4) that is located near the central portion thereof in the surface direction in a direction orthogonal to a surface of the evaporator (4).

An outdoor unit includes: a lower heat exchanger having a first heat-transfer tube; an upper heat exchanger provided above the lower heat exchanger, including a first-row heat-exchanger core and a second-row heat-exchanger core, and a second heat-transfer tube; and a reinforcing member supporting the upper heat exchanger, wherein the reinforcing member includes a first supporting tab supporting the bottom of the second-row heat-exchanger core; a second supporting tab supporting the lower side surface of the second-row heat-exchanger core and formed integrally with the first supporting tab; a third supporting tab providing a gap between the first-row heat-exchanger core and the second-row heat-exchanger core and formed integrally with the first supporting tab; an engaging tab holding the first heat-transfer tubes and formed integrally with the third supporting tab; and an engaging tab holding the second heat-transfer tubes and formed integrally with the third supporting tab.

A ground circuit in a low-energy system includes a connection pipeline (3), collection pipe system (2) and a return pipeline(4) for circulating a transfer fluid. The ground circuit is utilized for transferring thermal energy recovered from its surroundings, for instance, to a heat pump (5). The ground circuit collection pipe system (2) consists of a hollow profile (6) arranged to be a coil, whereby the hollow profile is connected at its first end to a connection pipeline (3) for conveying the transfer fluid along the hollow profile from the first coil end to the second, and at the second end of the coil, the second end of the hollow profile is connected to the return pipeline (4) for conveying the transfer fluid from the hollow profile towards the place where it is used. At the opposite ends of the hollow profile, means for controlling the fluid flow are arranged.