Heating unit, heating inner chamber and hanging ironing machine

A hanging ironing machine, comprising a machine body, wherein the machine body is provided with a heating inner chamber,

• wherein the heating inner chamber comprises a housing, wherein the housing has an upper-layer inner chamber and a lower-layer inner chamber, the upper-layer inner chamber is communicated with the lower-layer inner chamber, and a heating unit is configured between the upper-layer inner chamber and the lower-layer inner chamber within the housing, an upper layer of the heating unit is used for heating the upper-layer inner chamber, and a lower layer of the heating unit is used for heating the lower-layer inner chamber;
• wherein the heating unit comprises an integrated heating tube, wherein the integrated heating tube is in a continuous and double-layers stacked shape, and a single-layer structure of the integrated heating tube is configured to include at least two sections of straight tubes that extend along a length direction;
• wherein the housing includes an upper housing and a lower housing, the upper housing is connected to an upper side of the lower housing, and connecting end faces between the upper housing and the lower housing forms a first interlayer for accommodating the upper layer of the heating unit;
• wherein the upper housing or the lower housing is directly formed on an outer side of the single-layer structure of the integrated heating tube;
• wherein the lower housing is directly formed on an outer side of a lower-layer structure of the integrated heating tube, and an upper end face thereof forms an accommodating groove that half encloses the upper layer structure of the integrated heating tube, a lower end of the upper housing has a recess for matching with the accommodating groove,
• and the recess and the accommodating groove together form the first interlayer, the upper-layer inner chamber is located at an upper end of the upper housing and near the first interlayer, and the lower-layer inner chamber is located at a lower side of the lower housing.