Coaxial double-pipe heat exchanger for water source heat pump unit
A water source heat pump unit and heat exchanger technology, which is applied to heat exchange equipment, refrigerators, tubular elements, etc., can solve the problems of unreliable heating, low heating energy efficiency, anti-freezing, anti-fouling, and poor corrosion resistance. , to achieve the effect of improving heat exchange efficiency, matching of condensation and evaporation capacity
Inactive Publication Date: 2012-05-02
WUXI TONGFANG ARTIFICIAL ENVIRONMENT
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Problems solved by technology
[0002] The current coaxial casing heat exchanger is widely used in water source heat pump units due to its strong antifreeze, antifouling and corrosion resistance, but at the same time, because of its poor effect when used as an evaporator, the heat pump unit Low heating capacity and low heating efficiency, even when the water temperature is low, it does not heat reliably
Although the heat transfer performance of the plate heat exchanger is good, due to its own structural problems, the anti-freezing, anti-fouling, and anti-corrosion capabilities are poor.
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[0011] The present invention will be further described below in conjunction with specific drawings and embodiments.
[0012] Such as Figure 1~Figure 2 As shown: the present invention includes outer tube 1, inner tube 2, envelope 3, brine inlet and outlet pipe 4, petal body 5, refrigerant inlet 6, refrigerant outlet 7, brine circulation cavity 8, petal flow cavity 9 and inner tube flow chamber 10.
[0013] Such as figure 1 with figure 2 As shown: the coaxial casing heat exchanger includes an outer tube 1, and the two ends of the outer tube 1 are provided with a fixedly connected envelope 3, and the two ends of the outer tube 1 can be sealed by the envelope 3. The outer tube 1 is provided with a coaxially distributed inner tube 2, the two ends of the inner tube 2 pass through the corresponding envelope 3, and the ends of the inner tube 2 that pass through the envelope 3 respectively form a refrigerant inlet 6 and a refrigeration unit. Agent outlet 7. When forming the abov...
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The invention relates to a coaxial double-pipe heat exchanger for a water source heat pump unit. The coaxial double-pipe heat exchanger comprises an outer pipe, wherein the two ends of the outer pipe are provided with sealing sleeves which are connected fixedly; inner pipes which are distributed coaxially are arranged in the outer pipe; the two ends of the inner pipes extend out of corresponding sealing sleeves respectively; an enclosed secondary refrigerant flow cavity is formed by each inner pipe and the outer pipe; the edges of the outer rings of the inner pipes are provided with a plurality of petal-shaped bodies; the inner pipes are connected with the inner wall of the outer pipe through the petal-shaped bodies; and petal-shaped flow cavities in the petal-shaped bodies are communicated with an inner pipe flow cavity in the central area of the inner pipe. In the invention, the inner pipes and the outer pipe are formed by bending; when a refrigerant runs in the refrigerant flow cavities in the inner pipes, the liquid drops of the refrigerant are thrown onto the inner wall of the outer pipe continuously under the action of centrifugal force, i.e., the liquid drops of the refrigerant get close to the inner wall of the outer pipe continuously through the petal-shaped flow cavities, so that the heat exchanging efficiency can be increased, and condensing and evaporating capabilities are matched basically when the coaxial double-pipe heat exchanger is taken as a water source side heat exchanger under the working condition of the water source heat pump unit.
Description
technical field [0001] The invention relates to a heat exchanger, in particular to a coaxial casing heat exchanger for a water source heat pump unit, and belongs to the technical field of air conditioner heat exchangers. Background technique [0002] The current coaxial casing heat exchanger is widely used in water source heat pump units due to its strong antifreeze, antifouling and corrosion resistance, but at the same time, because of its poor effect when used as an evaporator, the heat pump unit The heating capacity is low and the heating energy efficiency is low, even when the water temperature is low, it cannot heat reliably. Although the plate heat exchanger has good heat transfer performance, due to its own structural problems, its anti-freeze, anti-fouling, and anti-corrosion capabilities are poor. Therefore, in order to improve the system energy efficiency and reliability of the water source heat pump unit, it is necessary to develop a type of water source heat pum...
Claims
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IPC IPC(8): F25B39/00F28F1/16
Inventor 顾卫平
Owner WUXI TONGFANG ARTIFICIAL ENVIRONMENT