CN205332321U - Reversed return type ground source heat pump system - Google Patents

Abstract

The utility model discloses a reversed return type ground source heat pump system, has solved that normal atmospheric temperature water absorbs the heat inhomogeneous problem in the soil underground among the prior art, and its technical essential is: including total inlet tube at external normal atmospheric temperature water source, a plurality of branch pipe and total wet return, come from the normal atmospheric temperature water of total inlet tube is flowing into total wet return and is getting into ground source heat pump set, characterized by behind the branch pipe: a plurality of branch pipes be in the distance that flows through between the starting point of total inlet tube and the terminal point of assembling the wet return is the same, has gained the thermal technological effect of even absorption and make full use of ground source.

Description

A kind of reversed return type earth-source hot-pump system

Technical field

This utility model relates to heating system, particularly to the heat pump utilizing soil heat to carry out auxiliary heat supplying。

Background technology

Earth-source hot-pump system refers to and utilizes the novel energy that superficial-layer geothermal energy carries out heating and refrigerating to utilize the eco-friendly power source of technology to utilize system。Earth-source hot-pump system usually utilizes the circulation heat absorption of the pipeline that room temperature water source buries underground in soil or inhales the cold heat by underground or cold is taken out of, this part water enters in earth source heat pump unit, utilize the Carnot cycle within earth source heat pump unit and inverse Carnot cycle, water by the temperature in external refrigeration or needed for heat supply with the heat of underground or the water conversion of cold, so move in circles, it is achieved making full use of of surface temperature。Surface temperature is all stable at about 17 degree throughout the year, utilize this stationary temperature, the operational efficiency of earth source heat pump exceeds 40% to 60% than traditional air conditioner operational efficiency, therefore, it is calculated in units of year, adopts the heating system of earth source heat pump can save the operating cost of about 50% than the form of traditional air conditioner heating。Further, it is electric energy and the coal-fired boiler that adopts in non-traditional heating system due to what earth source heat pump utilized, thus, be conducive to the protection of environment。

In traditional earth-source hot-pump system, it is embedded in the pipeline of underground and typically requires and be perpendicular to earth's surface and arrange, and, the pipeline of this arrangement form needs to be formed the waterway circulating of a larger area, can meet the instructions for use of Office Area or residential block。Such as, Authorization Notice No. is the energy storage device utilizing soil disclosed in the Chinese patent of CN201935428U, its utilization be exactly underground circulation pipeline in fluid the temperature in earth's surface carried be used to earth's surface。

When utilizing underground heat or cold, pipeline usually singly enters the form singly gone out, an i.e. total water inlet pipe, carry out when flowing through each U-shaped arm once with the heat exchange of soil, in this form, it is often the case that be that the heat in local soil is not pulled away, in other words, it is uneven that this arrangement form can cause burying underground Btu utilization in the soil of pipeline, there is bigger waste。

Utility model content

The purpose of this utility model is in that to provide a kind of reversed return type earth-source hot-pump system so that a water inlet tube of each heat exchange is identical with backwater distance, so that the Btu utilization being embedded with in the soil of pipeline is abundant and uniform。

Above-mentioned purpose of the present utility model has the technical scheme that a kind of reversed return type earth-source hot-pump system, include the water inlet manifold at external room temperature water source, some arms and total return pipe, normal-temperature water from described water inlet manifold is flowing into total return pipe after arm and is entering earth source heat pump unit, and the distance that described some arms flow through between the starting point and the terminal of total return pipe of described water inlet manifold is identical。

Further, described arm includes water inlet, water return outlet and the U-tube section being arranged between water inlet and water return outlet, and described water inlet connects with described water inlet manifold, and described water return outlet connects with described total return pipe。

By adopting technique scheme, by changing the arrangement form of pipeline, the water obtained in each arm is made to flow through same distance within pipeline, that is, water in each arm absorbs and flows out pipeline in soil after the temperature of equivalent, so, the heat in each region being distributed in soil is uniformly taken away to earth source heat pump unit by some arms, it is achieved making full use of of underground heat。

This utility model is further arranged to: the isometric setting of U-tube section of described some arms, and described water inlet accesses described total return pipe after first accessing its water return outlet of arm of described water inlet manifold。

By adopting technique scheme, utilize the water inlet of arm and " last in, first out " of water return outlet, plus isometric U-tube section, flow into water in each arm and flow between outflow the distance through equivalent, thus utilizing the heat of soil uniformly, under this arrangement form, the specification of all arms is identical, is suitable for large-area laying。

This utility model may be alternatively provided as: described water inlet manifold includes the water inlet end near external room temperature water source, described total return pipe includes the backwater end of closely source source pump, the length of described some arms is that gradual change is arranged, and its gradual change trend is for be gradually increased to backwater end by described water inlet end。

Further, it is provided with circulating pump between described total return pipe and described earth source heat pump unit。

Further, described circulating pump has two, and two circulating pumps are connected between described backwater end and earth source heat pump unit with parallel way。

By adopting technique scheme, it is possible under the premise not changing existing pipeline turnover bottom surface, the length of arm is made gradual change, to realize " same to journey "。

In sum, this utility model has the advantages that the room temperature water source making inflow underground flows through isometric distance in underground, flows in earth source heat pump unit after the heat of equivalent so that the water in each section of arm absorbs in soil。It is possible not only to ensure that the heat of soil makes full use of and does not produce waste, and, the Inlet and outlet water pressure of each section of arm is also equal, far makes due to distance to manage the noise that interior water shortage produces therefore, it is possible to reduce arm。

Accompanying drawing explanation

Fig. 1 is the pipeline layout in embodiment 1；

Fig. 2 is the pipeline layout in embodiment 2。

In figure, 1, user side circulating pump；2, water inlet manifold；3, total return pipe；4, arm；5, source circulating pump；6, earth source heat pump unit；7, user's water supply network；21, water inlet end；31, backwater end；41, water inlet；42, water return outlet；43, U-tube section。

Detailed description of the invention

Below in conjunction with accompanying drawing, this utility model is described in further detail。

Embodiment 1 adopts the earth-source hot-pump system of isometric arm, as shown in fig. 1

A kind of earth-source hot-pump system adopting isometric arm, include user side circulating pump 1, water inlet manifold 2, total return pipe 3, some arms 4, source circulating pump 5, earth source heat pump unit 6 and user's water supply network 7, wherein, user side circulating pump 1 pumps normal-temperature water in system, the normal-temperature water flowed out from user side circulating pump 1 has certain hydraulic pressure, it first flows through water inlet manifold 2 afterwards, arm 4 is uniformly connected on water inlet manifold 2 along the extension of water inlet manifold 2, and the normal-temperature water flowing into arm 4 in water inlet manifold 2 flows in total return pipe 3 after underground absorbs the soil moisture。The temperature of the water in total return pipe 3 is not enough to user's water supply network 7 is carried out heat supply or refrigeration, thus, total return pipe 3 flows into after the pressurization of ground source circulating pump in earth source heat pump unit 6 and carries out further heating or refrigeration, ultimately forms and is satisfied with in user's water supply network 7 cold water or hot water used。

Specifically, arm 4 includes water inlet 41, water return outlet 42 and be connected to U-tube section between the two, in the present embodiment, the U-tube section 43 of all arms 4 is in isometric setting, water inlet 41 is connected on water inlet manifold 2, water return outlet 42 is connected in total return pipe 3, in order to ensure that the normal-temperature water in every arm 4 absorbs the temperature of equivalent in soil, need to be arranged to the distance that normal-temperature water flows through in every arm 4 to be equal to, the present embodiment the technical scheme is that on some arms 4, water inlet 41 first accesses the arm 4 that water inlet manifold 2 leans on, in its water return outlet gyrus compositus posterior water pipe 3, the arrangement form of such " last in, first out ", water inlet manifold 2, a piece arm 4 and total return pipe 3 regard a unit as, the distance that the water being then embedded in all unit of underground flows through is equal, thus, heat in the soil that its internal water absorbs in theory is also essentially identical。

Embodiment 2 adopts the earth-source hot-pump system of the arm of length gradual change, as shown in Figure 2

Water inlet manifold 2 includes water inlet end 21, total return pipe 3 includes backwater end 31, wherein, water inlet end is the one end on water inlet manifold 2 near user side water circulating pump 1, backwater end 31 is one end of closely source circulating pump 5 on total return pipe 3, the length of the U-tube section 43 on arm 4 is that gradual change form is arranged, that is: distance water inlet end 21 and backwater end 31 arm 4 length all farther out are shorter, arm 4 length all nearer apart from water inlet end 21 and backwater end 31 is longer, so that the water in each unit mentioned in embodiment 1 flows through equal distance, make the heat in the soil of internal water absorption essentially identical。

Further, user side circulating pump 1 and ground source circulating pump 5 are provided with two, and access pipeline in parallel so that circulating pump itself is in order to a use, it is prevented that the damage of circulating pump makes whole system paralyse。The arrangement form of this circulating pump, all applicable in embodiment 1 and embodiment 2。

This specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; the present embodiment can be made the amendment not having creative contribution as required by those skilled in the art after reading this specification, but as long as being affected by the protection of Patent Law in right of the present utility model。

Claims (6)

1. a reversed return type earth-source hot-pump system, include the water inlet manifold at external room temperature water source, some arms and total return pipe, normal-temperature water from described water inlet manifold is flowing into total return pipe after arm and is entering earth source heat pump unit, it is characterized in that: the distance that described some arms flow through between the starting point and the terminal of total return pipe of described water inlet manifold is identical。

2. reversed return type earth-source hot-pump system according to claim 1, it is characterized in that: described arm includes water inlet, water return outlet and the U-tube section being arranged between water inlet and water return outlet, described water inlet connects with described water inlet manifold, and described water return outlet connects with described total return pipe。

3. reversed return type earth-source hot-pump system according to claim 2, is characterized in that: the isometric setting of U-tube section of described some arms, and described water inlet accesses described total return pipe after first accessing its water return outlet of arm of described water inlet manifold。

4. reversed return type earth-source hot-pump system according to claim 1 and 2, it is characterized in that: described water inlet manifold includes the water inlet end near external room temperature water source, described total return pipe includes the backwater end of closely source source pump, the length of described some arms is that gradual change is arranged, and its gradual change trend is for be gradually increased to backwater end by described water inlet end。

5. reversed return type earth-source hot-pump system according to claim 4, is characterized in that: be provided with circulating pump between described total return pipe and described earth source heat pump unit。

6. reversed return type earth-source hot-pump system according to claim 5, is characterized in that: described circulating pump has two, and two circulating pumps are connected between described backwater end and earth source heat pump unit with parallel way。