Single-coil heat exchanger

Abstract

A single coil pipe type heat exchanger comprises a shell, an inner barrel, a spiral barrel-shaped coil pipe and a baffle plate, the shell comprises a refrigerant inlet pipe hole and a refrigerant outlet pipe hole which are formed in the top, a hot water outlet pipe arranged on the upper portion of the circumferential wall and a cold water inlet pipe arranged on the lower portion of the circumferential wall; the baffle plate is spirally wound to form an inner flow guide body and an outer flow guide body, and a gap between the inner flow guide body and the outer flow guide body forms a cylindrical coil pipe cavity; the diameter of the outer deflector is larger than that of the inner deflector; a bottom plate of the shell supports the lower end of the inner flow guide body or the outer flow guide body, the inner cylinder is arranged in and attached to the space of the inner flow guide body, and the outer flow guide body is attached to the inner surface of the shell; the spiral barrel-shaped coil pipe is arranged in the barrel-shaped coil pipe cavity, and the spiral barrel-shaped coil pipe is attached to the inner flow guide body and the outer flow guide body respectively. Water flows between the outer shell and the inner barrel and exchanges heat with the spiral barrel-shaped coil pipe, and due to the arrangement of the baffle plates, under the condition that the height and the size are not changed, the flowing path of the water around a pipe body of the spiral barrel-shaped coil pipe is increased, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The present invention relates to a heat pump, in particular to a heat exchanger for refrigerant and hot water. Background Art

[0002] The current existing technology, Chinese patent 201420806093.2, is a titanium tube heat exchanger that can effectively improve heat exchange efficiency. It includes a shell and a top cover at the top of the shell to form a sealed cavity. The top of the shell is provided with a water outlet pipe and a water flow switch located on the water outlet pipe. The bottom of the shell is provided with a water inlet pipe. The shell is provided with an inner titanium coil connected to the refrigerant outlet extending outside the shell, and an outer titanium coil surrounding the inner titanium coil and connected to the refrigerant inlet extending outside the shell. The diameter of the inner titanium coil is smaller than the diameter of the outer titanium coil. This titanium tube heat exchanger that can effectively improve heat exchange efficiency arranges the heat exchange tubes connecting the refrigerant inlet and the refrigerant outlet into titanium coils of different diameters. When the refrigerant gas enters and releases heat, the larger diameter outer titanium coil can reduce the pressure of the heat pump system, while when the refrigerant liquid flows out, the smaller diameter inner titanium coil can ensure sufficient heat exchange, thereby effectively improving the heat exchange efficiency of the titanium tube heat exchanger. The existing problems are: the arrangement of the inner titanium coil and the outer titanium coil increases the cost, is bulky, and has a large heat exchange distance. Summary of the Invention

[0003] The purpose of the present invention is to provide a single coil heat exchanger which has the characteristics of small size, low cost and high heat exchange efficiency.

[0004] The present invention is realized as follows: a single coil heat exchanger, which is special in that it comprises an outer shell, an inner tube, a spiral cylindrical coil and a baffle.

[0005] The shell includes a refrigerant inlet and outlet holes at the top, a hot water outlet pipe at the upper part of the circumferential wall, and a cold water inlet pipe at the lower part;

[0006] The baffle is spirally wound to form an inner guide body and an outer guide body, and the gap between the inner guide body and the outer guide body forms a cylindrical coil cavity; the diameter of the outer guide body is larger than that of the inner guide body;

[0007] The bottom plate of the outer shell supports the lower end of the inner guide body or the outer guide body, the inner cylinder is arranged in the space of the inner guide body and fits in with it, and the outer guide body fits in with the inner surface of the outer shell; the spiral cylindrical coil is arranged in the cylindrical coil cavity, and the spiral cylindrical coil fits in with the inner guide body and the outer guide body respectively.

[0008] The special feature of the single coil heat exchanger is that the inner and outer guide fluids are made of a baffle plate and are arranged in order from bottom to top: outer guide fluid, inner guide fluid, outer guide fluid, inner guide fluid;

[0009] Or they can be arranged in order from bottom to top according to the inner guiding fluid, outer guiding fluid, inner guiding fluid and outer guiding fluid.

[0010] The single coil heat exchanger is special in that the cross section of the baffle is square or trapezoidal.

[0011] The present invention provides a single-coil heat exchanger. Due to the adoption of such a structure, water flows between the outer shell and the inner tube and exchanges heat with the spiral cylindrical coil. The arrangement of the baffle increases the path for water to flow around the tube body of the spiral cylindrical coil while keeping the height and volume unchanged, thereby improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the front view of the present invention.

[0013] Figure 2 It is a partial schematic diagram of the present invention.

[0014] Figure 3 It is a partial schematic diagram of the water flow of the present invention. DETAILED DESCRIPTION

[0015] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0016] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0017] like Figure 1 As shown, a single coil heat exchanger includes an outer shell 1, an inner tube 2, a spiral cylindrical coil 3 and a baffle 4.

[0018] The housing 1 includes a refrigerant inlet hole (not shown) and a refrigerant outlet hole at the top, a hot water outlet pipe 11 at the upper portion of the circumferential wall, and a cold water inlet pipe 12 at the lower portion;

[0019] The baffle 4 is spirally wound to form an inner guiding body 41 and an outer guiding body 42. The gap between the inner guiding body 41 and the outer guiding body 42 forms a cylindrical coil cavity. The diameter of the outer guiding body 42 is larger than that of the inner guiding body 41.

[0020] The bottom plate of the outer shell 1 supports the lower end of the outer flow guide 42, the inner cylinder 2 is arranged in the space of the inner flow guide 41 and fits in it, and the outer flow guide 42 fits in with the inner surface of the outer shell 1; the spiral cylindrical coil 3 is arranged in the cylindrical coil cavity, and the spiral cylindrical coil 3 fits in with the inner flow guide 41 and the outer flow guide 42 respectively.

[0021] As a further improvement of the present invention: the inner guide body 41 and the outer guide body 42 are made of a baffle 4, and are arranged in order from bottom to top according to the outer guide body 42, the inner guide body 41, the outer guide body 42, and the inner guide body 41, as shown in FIG. Figure 2 As shown;

[0022] Alternatively, the inner guiding fluid 41 , the outer guiding fluid 42 , the inner guiding fluid 41 and the outer guiding fluid 42 are sequentially arranged from bottom to top.

[0023] The cross section of the baffle 4 is square or trapezoidal.

[0024] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A single coil heat exchanger, characterized in that: It includes outer shell, inner cylinder, spiral cylindrical coil and baffle. The shell includes a refrigerant inlet and outlet holes at the top, a hot water outlet pipe at the upper part of the circumferential wall, and a cold water inlet pipe at the lower part; The baffle is spirally wound to form an inner guide body and an outer guide body, and the gap between the inner guide body and the outer guide body forms a cylindrical coil cavity; the diameter of the outer guide body is larger than that of the inner guide body; The bottom plate of the outer shell supports the lower end of the inner guide body or the outer guide body, the inner cylinder is arranged in the space of the inner guide body and fits in with it, and the outer guide body fits in with the inner surface of the outer shell; the spiral cylindrical coil is arranged in the cylindrical coil cavity, and the spiral cylindrical coil fits in with the inner guide body and the outer guide body respectively.

2. The single coil heat exchanger according to claim 1, characterized in that: The inner and outer guide bodies are made of a baffle plate, and are arranged and connected in order from bottom to top in the order of outer guide body, inner guide body, outer guide body, and inner guide body; Or the inner guiding fluid, the outer guiding fluid, the inner guiding fluid and the outer guiding fluid are arranged and connected in sequence from bottom to top.

3. The single coil heat exchanger according to claim 1 or 2, characterized in that: The cross section of the baffle is square or trapezoidal.

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